1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright (C) 1994-2015 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 #include "safe-ctype.h"
25 #include "dw2gencfi.h"
26 #include "opcode/ppc.h"
30 #include "elf/ppc64.h"
31 #include "dwarf2dbg.h"
39 #include "coff/xcoff.h"
43 /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
45 /* Tell the main code what the endianness is. */
46 extern int target_big_endian;
48 /* Whether or not, we've set target_big_endian. */
49 static int set_target_endian = 0;
51 /* Whether to use user friendly register names. */
52 #ifndef TARGET_REG_NAMES_P
54 #define TARGET_REG_NAMES_P TRUE
56 #define TARGET_REG_NAMES_P FALSE
60 /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
63 /* #lo(value) denotes the least significant 16 bits of the indicated. */
64 #define PPC_LO(v) ((v) & 0xffff)
66 /* #hi(value) denotes bits 16 through 31 of the indicated value. */
67 #define PPC_HI(v) (((v) >> 16) & 0xffff)
69 /* #ha(value) denotes the high adjusted value: bits 16 through 31 of
70 the indicated value, compensating for #lo() being treated as a
72 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
74 /* #higher(value) denotes bits 32 through 47 of the indicated value. */
75 #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
77 /* #highera(value) denotes bits 32 through 47 of the indicated value,
78 compensating for #lo() being treated as a signed number. */
79 #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
81 /* #highest(value) denotes bits 48 through 63 of the indicated value. */
82 #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
84 /* #highesta(value) denotes bits 48 through 63 of the indicated value,
85 compensating for #lo being treated as a signed number. */
86 #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
88 #define SEX16(val) (((val) ^ 0x8000) - 0x8000)
90 /* For the time being on ppc64, don't report overflow on @h and @ha
91 applied to constants. */
92 #define REPORT_OVERFLOW_HI 0
94 static bfd_boolean reg_names_p = TARGET_REG_NAMES_P;
96 static void ppc_macro (char *, const struct powerpc_macro *);
97 static void ppc_byte (int);
99 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
100 static void ppc_tc (int);
101 static void ppc_machine (int);
105 static void ppc_comm (int);
106 static void ppc_bb (int);
107 static void ppc_bc (int);
108 static void ppc_bf (int);
109 static void ppc_biei (int);
110 static void ppc_bs (int);
111 static void ppc_eb (int);
112 static void ppc_ec (int);
113 static void ppc_ef (int);
114 static void ppc_es (int);
115 static void ppc_csect (int);
116 static void ppc_dwsect (int);
117 static void ppc_change_csect (symbolS *, offsetT);
118 static void ppc_function (int);
119 static void ppc_extern (int);
120 static void ppc_lglobl (int);
121 static void ppc_ref (int);
122 static void ppc_section (int);
123 static void ppc_named_section (int);
124 static void ppc_stabx (int);
125 static void ppc_rename (int);
126 static void ppc_toc (int);
127 static void ppc_xcoff_cons (int);
128 static void ppc_vbyte (int);
132 static void ppc_elf_rdata (int);
133 static void ppc_elf_lcomm (int);
134 static void ppc_elf_localentry (int);
135 static void ppc_elf_abiversion (int);
139 static void ppc_previous (int);
140 static void ppc_pdata (int);
141 static void ppc_ydata (int);
142 static void ppc_reldata (int);
143 static void ppc_rdata (int);
144 static void ppc_ualong (int);
145 static void ppc_znop (int);
146 static void ppc_pe_comm (int);
147 static void ppc_pe_section (int);
148 static void ppc_pe_function (int);
149 static void ppc_pe_tocd (int);
152 /* Generic assembler global variables which must be defined by all
156 /* This string holds the chars that always start a comment. If the
157 pre-processor is disabled, these aren't very useful. The macro
158 tc_comment_chars points to this. We use this, rather than the
159 usual comment_chars, so that we can switch for Solaris conventions. */
160 static const char ppc_solaris_comment_chars[] = "#!";
161 static const char ppc_eabi_comment_chars[] = "#";
163 #ifdef TARGET_SOLARIS_COMMENT
164 const char *ppc_comment_chars = ppc_solaris_comment_chars;
166 const char *ppc_comment_chars = ppc_eabi_comment_chars;
169 const char comment_chars[] = "#";
172 /* Characters which start a comment at the beginning of a line. */
173 const char line_comment_chars[] = "#";
175 /* Characters which may be used to separate multiple commands on a
177 const char line_separator_chars[] = ";";
179 /* Characters which are used to indicate an exponent in a floating
181 const char EXP_CHARS[] = "eE";
183 /* Characters which mean that a number is a floating point constant,
185 const char FLT_CHARS[] = "dD";
187 /* Anything that can start an operand needs to be mentioned here,
188 to stop the input scrubber eating whitespace. */
189 const char ppc_symbol_chars[] = "%[";
191 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
192 int ppc_cie_data_alignment;
194 /* The dwarf2 minimum instruction length. */
195 int ppc_dwarf2_line_min_insn_length;
197 /* More than this number of nops in an alignment op gets a branch
199 unsigned long nop_limit = 4;
201 /* The type of processor we are assembling for. This is one or more
202 of the PPC_OPCODE flags defined in opcode/ppc.h. */
203 ppc_cpu_t ppc_cpu = 0;
204 ppc_cpu_t sticky = 0;
206 /* Value for ELF e_flags EF_PPC64_ABI. */
207 unsigned int ppc_abiversion = 0;
209 /* Flags set on encountering toc relocs. */
211 has_large_toc_reloc = 1,
212 has_small_toc_reloc = 2
215 /* Warn on emitting data to code sections. */
217 unsigned long last_insn;
221 /* The target specific pseudo-ops which we support. */
223 const pseudo_typeS md_pseudo_table[] =
225 /* Pseudo-ops which must be overridden. */
226 { "byte", ppc_byte, 0 },
229 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
230 legitimately belong in the obj-*.c file. However, XCOFF is based
231 on COFF, and is only implemented for the RS/6000. We just use
232 obj-coff.c, and add what we need here. */
233 { "comm", ppc_comm, 0 },
234 { "lcomm", ppc_comm, 1 },
238 { "bi", ppc_biei, 0 },
240 { "csect", ppc_csect, 0 },
241 { "dwsect", ppc_dwsect, 0 },
242 { "data", ppc_section, 'd' },
246 { "ei", ppc_biei, 1 },
248 { "extern", ppc_extern, 0 },
249 { "function", ppc_function, 0 },
250 { "lglobl", ppc_lglobl, 0 },
251 { "ref", ppc_ref, 0 },
252 { "rename", ppc_rename, 0 },
253 { "section", ppc_named_section, 0 },
254 { "stabx", ppc_stabx, 0 },
255 { "text", ppc_section, 't' },
256 { "toc", ppc_toc, 0 },
257 { "long", ppc_xcoff_cons, 2 },
258 { "llong", ppc_xcoff_cons, 3 },
259 { "word", ppc_xcoff_cons, 1 },
260 { "short", ppc_xcoff_cons, 1 },
261 { "vbyte", ppc_vbyte, 0 },
265 { "llong", cons, 8 },
266 { "rdata", ppc_elf_rdata, 0 },
267 { "rodata", ppc_elf_rdata, 0 },
268 { "lcomm", ppc_elf_lcomm, 0 },
269 { "localentry", ppc_elf_localentry, 0 },
270 { "abiversion", ppc_elf_abiversion, 0 },
274 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
275 { "previous", ppc_previous, 0 },
276 { "pdata", ppc_pdata, 0 },
277 { "ydata", ppc_ydata, 0 },
278 { "reldata", ppc_reldata, 0 },
279 { "rdata", ppc_rdata, 0 },
280 { "ualong", ppc_ualong, 0 },
281 { "znop", ppc_znop, 0 },
282 { "comm", ppc_pe_comm, 0 },
283 { "lcomm", ppc_pe_comm, 1 },
284 { "section", ppc_pe_section, 0 },
285 { "function", ppc_pe_function,0 },
286 { "tocd", ppc_pe_tocd, 0 },
289 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
291 { "machine", ppc_machine, 0 },
298 /* Predefined register names if -mregnames (or default for Windows NT).
299 In general, there are lots of them, in an attempt to be compatible
300 with a number of other Windows NT assemblers. */
302 /* Structure to hold information about predefined registers. */
309 /* List of registers that are pre-defined:
311 Each general register has predefined names of the form:
312 1. r<reg_num> which has the value <reg_num>.
313 2. r.<reg_num> which has the value <reg_num>.
315 Each floating point register has predefined names of the form:
316 1. f<reg_num> which has the value <reg_num>.
317 2. f.<reg_num> which has the value <reg_num>.
319 Each vector unit register has predefined names of the form:
320 1. v<reg_num> which has the value <reg_num>.
321 2. v.<reg_num> which has the value <reg_num>.
323 Each condition register has predefined names of the form:
324 1. cr<reg_num> which has the value <reg_num>.
325 2. cr.<reg_num> which has the value <reg_num>.
327 There are individual registers as well:
328 sp or r.sp has the value 1
329 rtoc or r.toc has the value 2
330 fpscr has the value 0
336 dsisr has the value 18
338 sdr1 has the value 25
339 srr0 has the value 26
340 srr1 has the value 27
342 The table is sorted. Suitable for searching by a binary search. */
344 static const struct pd_reg pre_defined_registers[] =
346 { "cr.0", 0 }, /* Condition Registers */
366 { "dar", 19 }, /* Data Access Register */
367 { "dec", 22 }, /* Decrementer */
368 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
370 { "f.0", 0 }, /* Floating point registers */
397 { "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
463 { "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
504 /* Quantization registers used with pair single instructions. */
522 { "lr", 8 }, /* Link Register */
526 { "r.0", 0 }, /* General Purpose Registers */
559 { "r.sp", 1 }, /* Stack Pointer */
561 { "r.toc", 2 }, /* Pointer to the table of contents */
563 { "r0", 0 }, /* More general purpose registers */
596 { "rtoc", 2 }, /* Table of contents */
598 { "sdr1", 25 }, /* Storage Description Register 1 */
602 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
603 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
605 { "v.0", 0 }, /* Vector (Altivec/VMX) registers */
671 { "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */
805 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
807 /* Given NAME, find the register number associated with that name, return
808 the integer value associated with the given name or -1 on failure. */
811 reg_name_search (const struct pd_reg *regs, int regcount, const char *name)
813 int middle, low, high;
821 middle = (low + high) / 2;
822 cmp = strcasecmp (name, regs[middle].name);
828 return regs[middle].value;
836 * Summary of register_name.
838 * in: Input_line_pointer points to 1st char of operand.
840 * out: A expressionS.
841 * The operand may have been a register: in this case, X_op == O_register,
842 * X_add_number is set to the register number, and truth is returned.
843 * Input_line_pointer->(next non-blank) char after operand, or is in its
848 register_name (expressionS *expressionP)
855 /* Find the spelling of the operand. */
856 start = name = input_line_pointer;
857 if (name[0] == '%' && ISALPHA (name[1]))
858 name = ++input_line_pointer;
860 else if (!reg_names_p || !ISALPHA (name[0]))
863 c = get_symbol_name (&name);
864 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
866 /* Put back the delimiting char. */
867 *input_line_pointer = c;
869 /* Look to see if it's in the register table. */
872 expressionP->X_op = O_register;
873 expressionP->X_add_number = reg_number;
875 /* Make the rest nice. */
876 expressionP->X_add_symbol = NULL;
877 expressionP->X_op_symbol = NULL;
881 /* Reset the line as if we had not done anything. */
882 input_line_pointer = start;
886 /* This function is called for each symbol seen in an expression. It
887 handles the special parsing which PowerPC assemblers are supposed
888 to use for condition codes. */
890 /* Whether to do the special parsing. */
891 static bfd_boolean cr_operand;
893 /* Names to recognize in a condition code. This table is sorted. */
894 static const struct pd_reg cr_names[] =
911 /* Parsing function. This returns non-zero if it recognized an
915 ppc_parse_name (const char *name, expressionS *exp)
924 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
929 exp->X_op = O_constant;
930 exp->X_add_number = val;
935 /* Local variables. */
937 /* Whether to target xcoff64/elf64. */
938 static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64;
940 /* Opcode hash table. */
941 static struct hash_control *ppc_hash;
943 /* Macro hash table. */
944 static struct hash_control *ppc_macro_hash;
947 /* What type of shared library support to use. */
948 static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
950 /* Flags to set in the elf header. */
951 static flagword ppc_flags = 0;
953 /* Whether this is Solaris or not. */
954 #ifdef TARGET_SOLARIS_COMMENT
955 #define SOLARIS_P TRUE
957 #define SOLARIS_P FALSE
960 static bfd_boolean msolaris = SOLARIS_P;
965 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
966 using a bunch of different sections. These assembler sections,
967 however, are all encompassed within the .text or .data sections of
968 the final output file. We handle this by using different
969 subsegments within these main segments. */
971 /* Next subsegment to allocate within the .text segment. */
972 static subsegT ppc_text_subsegment = 2;
974 /* Linked list of csects in the text section. */
975 static symbolS *ppc_text_csects;
977 /* Next subsegment to allocate within the .data segment. */
978 static subsegT ppc_data_subsegment = 2;
980 /* Linked list of csects in the data section. */
981 static symbolS *ppc_data_csects;
983 /* The current csect. */
984 static symbolS *ppc_current_csect;
986 /* The RS/6000 assembler uses a TOC which holds addresses of functions
987 and variables. Symbols are put in the TOC with the .tc pseudo-op.
988 A special relocation is used when accessing TOC entries. We handle
989 the TOC as a subsegment within the .data segment. We set it up if
990 we see a .toc pseudo-op, and save the csect symbol here. */
991 static symbolS *ppc_toc_csect;
993 /* The first frag in the TOC subsegment. */
994 static fragS *ppc_toc_frag;
996 /* The first frag in the first subsegment after the TOC in the .data
997 segment. NULL if there are no subsegments after the TOC. */
998 static fragS *ppc_after_toc_frag;
1000 /* The current static block. */
1001 static symbolS *ppc_current_block;
1003 /* The COFF debugging section; set by md_begin. This is not the
1004 .debug section, but is instead the secret BFD section which will
1005 cause BFD to set the section number of a symbol to N_DEBUG. */
1006 static asection *ppc_coff_debug_section;
1008 /* Structure to set the length field of the dwarf sections. */
1009 struct dw_subsection {
1010 /* Subsections are simply linked. */
1011 struct dw_subsection *link;
1013 /* The subsection number. */
1016 /* Expression to compute the length of the section. */
1017 expressionS end_exp;
1020 static struct dw_section {
1021 /* Corresponding section. */
1024 /* Simply linked list of subsections with a label. */
1025 struct dw_subsection *list_subseg;
1027 /* The anonymous subsection. */
1028 struct dw_subsection *anon_subseg;
1029 } dw_sections[XCOFF_DWSECT_NBR_NAMES];
1030 #endif /* OBJ_XCOFF */
1034 /* Various sections that we need for PE coff support. */
1035 static segT ydata_section;
1036 static segT pdata_section;
1037 static segT reldata_section;
1038 static segT rdata_section;
1039 static segT tocdata_section;
1041 /* The current section and the previous section. See ppc_previous. */
1042 static segT ppc_previous_section;
1043 static segT ppc_current_section;
1048 symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
1049 #define PPC_APUINFO_ISEL 0x40
1050 #define PPC_APUINFO_PMR 0x41
1051 #define PPC_APUINFO_RFMCI 0x42
1052 #define PPC_APUINFO_CACHELCK 0x43
1053 #define PPC_APUINFO_SPE 0x100
1054 #define PPC_APUINFO_EFS 0x101
1055 #define PPC_APUINFO_BRLOCK 0x102
1056 #define PPC_APUINFO_VLE 0x104
1059 * We keep a list of APUinfo
1061 unsigned long *ppc_apuinfo_list;
1062 unsigned int ppc_apuinfo_num;
1063 unsigned int ppc_apuinfo_num_alloc;
1064 #endif /* OBJ_ELF */
1067 const char *const md_shortopts = "b:l:usm:K:VQ:";
1069 const char *const md_shortopts = "um:";
1071 #define OPTION_NOPS (OPTION_MD_BASE + 0)
1072 const struct option md_longopts[] = {
1073 {"nops", required_argument, NULL, OPTION_NOPS},
1074 {"ppc476-workaround", no_argument, &warn_476, 1},
1075 {"no-ppc476-workaround", no_argument, &warn_476, 0},
1076 {NULL, no_argument, NULL, 0}
1078 const size_t md_longopts_size = sizeof (md_longopts);
1081 md_parse_option (int c, char *arg)
1088 /* -u means that any undefined symbols should be treated as
1089 external, which is the default for gas anyhow. */
1094 /* Solaris as takes -le (presumably for little endian). For completeness
1095 sake, recognize -be also. */
1096 if (strcmp (arg, "e") == 0)
1098 target_big_endian = 0;
1099 set_target_endian = 1;
1100 if (ppc_cpu & PPC_OPCODE_VLE)
1101 as_bad (_("the use of -mvle requires big endian."));
1109 if (strcmp (arg, "e") == 0)
1111 target_big_endian = 1;
1112 set_target_endian = 1;
1120 /* Recognize -K PIC. */
1121 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
1124 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1132 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
1134 if (strcmp (arg, "64") == 0)
1138 if (ppc_cpu & PPC_OPCODE_VLE)
1139 as_bad (_("the use of -mvle requires -a32."));
1141 as_fatal (_("%s unsupported"), "-a64");
1144 else if (strcmp (arg, "32") == 0)
1151 new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, arg);
1155 if (strcmp (arg, "vle") == 0)
1157 if (set_target_endian && target_big_endian == 0)
1158 as_bad (_("the use of -mvle requires big endian."));
1160 as_bad (_("the use of -mvle requires -a32."));
1164 else if (strcmp (arg, "regnames") == 0)
1167 else if (strcmp (arg, "no-regnames") == 0)
1168 reg_names_p = FALSE;
1171 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1172 that require relocation. */
1173 else if (strcmp (arg, "relocatable") == 0)
1175 shlib = SHLIB_MRELOCATABLE;
1176 ppc_flags |= EF_PPC_RELOCATABLE;
1179 else if (strcmp (arg, "relocatable-lib") == 0)
1181 shlib = SHLIB_MRELOCATABLE;
1182 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1185 /* -memb, set embedded bit. */
1186 else if (strcmp (arg, "emb") == 0)
1187 ppc_flags |= EF_PPC_EMB;
1189 /* -mlittle/-mbig set the endianness. */
1190 else if (strcmp (arg, "little") == 0
1191 || strcmp (arg, "little-endian") == 0)
1193 target_big_endian = 0;
1194 set_target_endian = 1;
1195 if (ppc_cpu & PPC_OPCODE_VLE)
1196 as_bad (_("the use of -mvle requires big endian."));
1199 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
1201 target_big_endian = 1;
1202 set_target_endian = 1;
1205 else if (strcmp (arg, "solaris") == 0)
1208 ppc_comment_chars = ppc_solaris_comment_chars;
1211 else if (strcmp (arg, "no-solaris") == 0)
1214 ppc_comment_chars = ppc_eabi_comment_chars;
1219 as_bad (_("invalid switch -m%s"), arg);
1225 /* -V: SVR4 argument to print version ID. */
1227 print_version_id ();
1230 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1231 should be emitted or not. FIXME: Not implemented. */
1235 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1236 rather than .stabs.excl, which is ignored by the linker.
1237 FIXME: Not implemented. */
1248 nop_limit = strtoul (optarg, &end, 0);
1250 as_bad (_("--nops needs a numeric argument"));
1265 md_show_usage (FILE *stream)
1267 fprintf (stream, _("\
1269 -a32 generate ELF32/XCOFF32\n\
1270 -a64 generate ELF64/XCOFF64\n\
1272 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1273 -mpwr generate code for POWER (RIOS1)\n\
1274 -m601 generate code for PowerPC 601\n\
1275 -mppc, -mppc32, -m603, -m604\n\
1276 generate code for PowerPC 603/604\n\
1277 -m403 generate code for PowerPC 403\n\
1278 -m405 generate code for PowerPC 405\n\
1279 -m440 generate code for PowerPC 440\n\
1280 -m464 generate code for PowerPC 464\n\
1281 -m476 generate code for PowerPC 476\n\
1282 -m7400, -m7410, -m7450, -m7455\n\
1283 generate code for PowerPC 7400/7410/7450/7455\n\
1284 -m750cl generate code for PowerPC 750cl\n\
1285 -m821, -m850, -m860 generate code for PowerPC 821/850/860\n"));
1286 fprintf (stream, _("\
1287 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1288 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1289 -mbooke generate code for 32-bit PowerPC BookE\n\
1290 -ma2 generate code for A2 architecture\n\
1291 -mpower4, -mpwr4 generate code for Power4 architecture\n\
1292 -mpower5, -mpwr5, -mpwr5x\n\
1293 generate code for Power5 architecture\n\
1294 -mpower6, -mpwr6 generate code for Power6 architecture\n\
1295 -mpower7, -mpwr7 generate code for Power7 architecture\n\
1296 -mpower8, -mpwr8 generate code for Power8 architecture\n\
1297 -mcell generate code for Cell Broadband Engine architecture\n\
1298 -mcom generate code Power/PowerPC common instructions\n\
1299 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1300 fprintf (stream, _("\
1301 -maltivec generate code for AltiVec\n\
1302 -mvsx generate code for Vector-Scalar (VSX) instructions\n\
1303 -mhtm generate code for Hardware Transactional Memory\n\
1304 -me300 generate code for PowerPC e300 family\n\
1305 -me500, -me500x2 generate code for Motorola e500 core complex\n\
1306 -me500mc, generate code for Freescale e500mc core complex\n\
1307 -me500mc64, generate code for Freescale e500mc64 core complex\n\
1308 -me5500, generate code for Freescale e5500 core complex\n\
1309 -me6500, generate code for Freescale e6500 core complex\n\
1310 -mspe generate code for Motorola SPE instructions\n\
1311 -mvle generate code for Freescale VLE instructions\n\
1312 -mtitan generate code for AppliedMicro Titan core complex\n\
1313 -mregnames Allow symbolic names for registers\n\
1314 -mno-regnames Do not allow symbolic names for registers\n"));
1316 fprintf (stream, _("\
1317 -mrelocatable support for GCC's -mrelocatble option\n\
1318 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1319 -memb set PPC_EMB bit in ELF flags\n\
1320 -mlittle, -mlittle-endian, -le\n\
1321 generate code for a little endian machine\n\
1322 -mbig, -mbig-endian, -be\n\
1323 generate code for a big endian machine\n\
1324 -msolaris generate code for Solaris\n\
1325 -mno-solaris do not generate code for Solaris\n\
1326 -K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n\
1327 -V print assembler version number\n\
1328 -Qy, -Qn ignored\n"));
1330 fprintf (stream, _("\
1331 -nops=count when aligning, more than COUNT nops uses a branch\n\
1332 -ppc476-workaround warn if emitting data to code sections\n"));
1335 /* Set ppc_cpu if it is not already set. */
1340 const char *default_os = TARGET_OS;
1341 const char *default_cpu = TARGET_CPU;
1343 if ((ppc_cpu & ~(ppc_cpu_t) PPC_OPCODE_ANY) == 0)
1346 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_64;
1347 else if (strncmp (default_os, "aix", 3) == 0
1348 && default_os[3] >= '4' && default_os[3] <= '9')
1349 ppc_cpu |= PPC_OPCODE_COMMON;
1350 else if (strncmp (default_os, "aix3", 4) == 0)
1351 ppc_cpu |= PPC_OPCODE_POWER;
1352 else if (strcmp (default_cpu, "rs6000") == 0)
1353 ppc_cpu |= PPC_OPCODE_POWER;
1354 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1355 ppc_cpu |= PPC_OPCODE_PPC;
1357 as_fatal (_("unknown default cpu = %s, os = %s"),
1358 default_cpu, default_os);
1362 /* Figure out the BFD architecture to use. This function and ppc_mach
1363 are called well before md_begin, when the output file is opened. */
1365 enum bfd_architecture
1368 const char *default_cpu = TARGET_CPU;
1371 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1372 return bfd_arch_powerpc;
1373 if ((ppc_cpu & PPC_OPCODE_VLE) != 0)
1374 return bfd_arch_powerpc;
1375 if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1376 return bfd_arch_rs6000;
1377 if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1379 if (strcmp (default_cpu, "rs6000") == 0)
1380 return bfd_arch_rs6000;
1381 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1382 return bfd_arch_powerpc;
1385 as_fatal (_("neither Power nor PowerPC opcodes were selected."));
1386 return bfd_arch_unknown;
1393 return bfd_mach_ppc64;
1394 else if (ppc_arch () == bfd_arch_rs6000)
1395 return bfd_mach_rs6k;
1396 else if (ppc_cpu & PPC_OPCODE_TITAN)
1397 return bfd_mach_ppc_titan;
1398 else if (ppc_cpu & PPC_OPCODE_VLE)
1399 return bfd_mach_ppc_vle;
1401 return bfd_mach_ppc;
1405 ppc_target_format (void)
1409 return target_big_endian ? "pe-powerpc" : "pe-powerpcle";
1411 return "xcoff-powermac";
1414 return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000");
1416 return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
1422 return (ppc_obj64 ? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd");
1423 # elif defined (TE_VXWORKS)
1424 return "elf32-powerpc-vxworks";
1426 return (target_big_endian
1427 ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc")
1428 : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle"));
1433 /* Validate one entry in powerpc_opcodes[] or vle_opcodes[].
1434 Return TRUE if there's a problem, otherwise FALSE. */
1437 insn_validate (const struct powerpc_opcode *op)
1439 const unsigned char *o;
1440 unsigned long omask = op->mask;
1442 /* The mask had better not trim off opcode bits. */
1443 if ((op->opcode & omask) != op->opcode)
1445 as_bad (_("mask trims opcode bits for %s"), op->name);
1449 /* The operands must not overlap the opcode or each other. */
1450 for (o = op->operands; *o; ++o)
1452 if (*o >= num_powerpc_operands)
1454 as_bad (_("operand index error for %s"), op->name);
1459 const struct powerpc_operand *operand = &powerpc_operands[*o];
1460 if (operand->shift != PPC_OPSHIFT_INV)
1464 if (operand->shift >= 0)
1465 mask = operand->bitm << operand->shift;
1467 mask = operand->bitm >> -operand->shift;
1470 as_bad (_("operand %d overlap in %s"),
1471 (int) (o - op->operands), op->name);
1481 /* Insert opcodes and macros into hash tables. Called at startup and
1482 for .machine pseudo. */
1485 ppc_setup_opcodes (void)
1487 const struct powerpc_opcode *op;
1488 const struct powerpc_opcode *op_end;
1489 const struct powerpc_macro *macro;
1490 const struct powerpc_macro *macro_end;
1491 bfd_boolean bad_insn = FALSE;
1493 if (ppc_hash != NULL)
1494 hash_die (ppc_hash);
1495 if (ppc_macro_hash != NULL)
1496 hash_die (ppc_macro_hash);
1498 /* Insert the opcodes into a hash table. */
1499 ppc_hash = hash_new ();
1501 if (ENABLE_CHECKING)
1505 /* An index into powerpc_operands is stored in struct fix
1506 fx_pcrel_adjust which is 8 bits wide. */
1507 gas_assert (num_powerpc_operands < 256);
1509 /* Check operand masks. Code here and in the disassembler assumes
1510 all the 1's in the mask are contiguous. */
1511 for (i = 0; i < num_powerpc_operands; ++i)
1513 unsigned long mask = powerpc_operands[i].bitm;
1514 unsigned long right_bit;
1517 right_bit = mask & -mask;
1519 right_bit = mask & -mask;
1520 if (mask != right_bit)
1522 as_bad (_("powerpc_operands[%d].bitm invalid"), i);
1525 for (j = i + 1; j < num_powerpc_operands; ++j)
1526 if (memcmp (&powerpc_operands[i], &powerpc_operands[j],
1527 sizeof (powerpc_operands[0])) == 0)
1529 as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"),
1536 op_end = powerpc_opcodes + powerpc_num_opcodes;
1537 for (op = powerpc_opcodes; op < op_end; op++)
1539 if (ENABLE_CHECKING)
1541 if (op != powerpc_opcodes)
1543 int old_opcode = PPC_OP (op[-1].opcode);
1544 int new_opcode = PPC_OP (op[0].opcode);
1546 #ifdef PRINT_OPCODE_TABLE
1547 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1548 op->name, (unsigned int) (op - powerpc_opcodes),
1549 (unsigned int) new_opcode, (unsigned int) op->opcode,
1550 (unsigned int) op->mask, (unsigned long long) op->flags);
1553 /* The major opcodes had better be sorted. Code in the
1554 disassembler assumes the insns are sorted according to
1556 if (new_opcode < old_opcode)
1558 as_bad (_("major opcode is not sorted for %s"),
1563 bad_insn |= insn_validate (op);
1566 if ((ppc_cpu & op->flags) != 0
1567 && !(ppc_cpu & op->deprecated))
1571 retval = hash_insert (ppc_hash, op->name, (void *) op);
1574 as_bad (_("duplicate instruction %s"),
1581 if ((ppc_cpu & PPC_OPCODE_ANY) != 0)
1582 for (op = powerpc_opcodes; op < op_end; op++)
1583 hash_insert (ppc_hash, op->name, (void *) op);
1585 op_end = vle_opcodes + vle_num_opcodes;
1586 for (op = vle_opcodes; op < op_end; op++)
1588 if (ENABLE_CHECKING)
1590 if (op != vle_opcodes)
1592 unsigned old_seg, new_seg;
1594 old_seg = VLE_OP (op[-1].opcode, op[-1].mask);
1595 old_seg = VLE_OP_TO_SEG (old_seg);
1596 new_seg = VLE_OP (op[0].opcode, op[0].mask);
1597 new_seg = VLE_OP_TO_SEG (new_seg);
1599 #ifdef PRINT_OPCODE_TABLE
1600 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1601 op->name, (unsigned int) (op - powerpc_opcodes),
1602 (unsigned int) new_seg, (unsigned int) op->opcode,
1603 (unsigned int) op->mask, (unsigned long long) op->flags);
1605 /* The major opcodes had better be sorted. Code in the
1606 disassembler assumes the insns are sorted according to
1608 if (new_seg < old_seg)
1610 as_bad (_("major opcode is not sorted for %s"),
1616 bad_insn |= insn_validate (op);
1619 if ((ppc_cpu & op->flags) != 0
1620 && !(ppc_cpu & op->deprecated))
1624 retval = hash_insert (ppc_hash, op->name, (void *) op);
1627 as_bad (_("duplicate instruction %s"),
1634 if ((ppc_cpu & PPC_OPCODE_VLE) != 0)
1635 for (op = vle_opcodes; op < op_end; op++)
1636 hash_insert (ppc_hash, op->name, (void *) op);
1638 /* Insert the macros into a hash table. */
1639 ppc_macro_hash = hash_new ();
1641 macro_end = powerpc_macros + powerpc_num_macros;
1642 for (macro = powerpc_macros; macro < macro_end; macro++)
1644 if ((macro->flags & ppc_cpu) != 0 || (ppc_cpu & PPC_OPCODE_ANY) != 0)
1648 retval = hash_insert (ppc_macro_hash, macro->name, (void *) macro);
1649 if (retval != (const char *) NULL)
1651 as_bad (_("duplicate macro %s"), macro->name);
1661 /* This function is called when the assembler starts up. It is called
1662 after the options have been parsed and the output file has been
1670 ppc_cie_data_alignment = ppc_obj64 ? -8 : -4;
1671 ppc_dwarf2_line_min_insn_length = (ppc_cpu & PPC_OPCODE_VLE) ? 2 : 4;
1674 /* Set the ELF flags if desired. */
1675 if (ppc_flags && !msolaris)
1676 bfd_set_private_flags (stdoutput, ppc_flags);
1679 ppc_setup_opcodes ();
1681 /* Tell the main code what the endianness is if it is not overridden
1683 if (!set_target_endian)
1685 set_target_endian = 1;
1686 target_big_endian = PPC_BIG_ENDIAN;
1690 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1692 /* Create dummy symbols to serve as initial csects. This forces the
1693 text csects to precede the data csects. These symbols will not
1695 ppc_text_csects = symbol_make ("dummy\001");
1696 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
1697 ppc_data_csects = symbol_make ("dummy\001");
1698 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
1703 ppc_current_section = text_section;
1704 ppc_previous_section = 0;
1713 if (ppc_apuinfo_list == NULL)
1716 /* Ok, so write the section info out. We have this layout:
1720 0 8 length of "APUinfo\0"
1721 4 (n*4) number of APU's (4 bytes each)
1724 20 APU#1 first APU's info
1725 24 APU#2 second APU's info
1730 asection *seg = now_seg;
1731 subsegT subseg = now_subseg;
1732 asection *apuinfo_secp = (asection *) NULL;
1735 /* Create the .PPC.EMB.apuinfo section. */
1736 apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0);
1737 bfd_set_section_flags (stdoutput,
1739 SEC_HAS_CONTENTS | SEC_READONLY);
1742 md_number_to_chars (p, (valueT) 8, 4);
1745 md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4);
1748 md_number_to_chars (p, (valueT) 2, 4);
1751 strcpy (p, "APUinfo");
1753 for (i = 0; i < ppc_apuinfo_num; i++)
1756 md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4);
1759 frag_align (2, 0, 0);
1761 /* We probably can't restore the current segment, for there likely
1764 subseg_set (seg, subseg);
1769 /* Insert an operand value into an instruction. */
1771 static unsigned long
1772 ppc_insert_operand (unsigned long insn,
1773 const struct powerpc_operand *operand,
1779 long min, max, right;
1781 max = operand->bitm;
1785 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
1787 /* Extend the allowed range for addis to [-65536, 65535].
1788 Similarly for some VLE high part insns. For 64-bit it
1789 would be good to disable this for signed fields since the
1790 value is sign extended into the high 32 bits of the register.
1791 If the value is, say, an address, then we might care about
1792 the high bits. However, gcc as of 2014-06 uses unsigned
1793 values when loading the high part of 64-bit constants using
1795 Use the same extended range for cmpli, to allow at least
1797 min = ~max & -right;
1799 else if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1801 max = (max >> 1) & -right;
1802 min = ~max & -right;
1805 if ((operand->flags & PPC_OPERAND_PLUS1) != 0)
1808 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1817 /* Some people write constants with the sign extension done by
1818 hand but only up to 32 bits. This shouldn't really be valid,
1819 but, to permit this code to assemble on a 64-bit host, we
1820 sign extend the 32-bit value to 64 bits if so doing makes the
1823 && (offsetT) (val - 0x80000000 - 0x80000000) >= min
1824 && (offsetT) (val - 0x80000000 - 0x80000000) <= max
1825 && ((val - 0x80000000 - 0x80000000) & (right - 1)) == 0)
1826 val = val - 0x80000000 - 0x80000000;
1828 /* Similarly, people write expressions like ~(1<<15), and expect
1829 this to be OK for a 32-bit unsigned value. */
1831 && (offsetT) (val + 0x80000000 + 0x80000000) >= min
1832 && (offsetT) (val + 0x80000000 + 0x80000000) <= max
1833 && ((val + 0x80000000 + 0x80000000) & (right - 1)) == 0)
1834 val = val + 0x80000000 + 0x80000000;
1838 || (val & (right - 1)) != 0)
1839 as_bad_value_out_of_range (_("operand"), val, min, max, file, line);
1842 if (operand->insert)
1847 insn = (*operand->insert) (insn, (long) val, cpu, &errmsg);
1848 if (errmsg != (const char *) NULL)
1849 as_bad_where (file, line, "%s", errmsg);
1851 else if (operand->shift >= 0)
1852 insn |= ((long) val & operand->bitm) << operand->shift;
1854 insn |= ((long) val & operand->bitm) >> -operand->shift;
1861 /* Parse @got, etc. and return the desired relocation. */
1862 static bfd_reloc_code_real_type
1863 ppc_elf_suffix (char **str_p, expressionS *exp_p)
1867 unsigned int length : 8;
1868 unsigned int valid32 : 1;
1869 unsigned int valid64 : 1;
1878 const struct map_bfd *ptr;
1880 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
1881 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
1882 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
1884 static const struct map_bfd mapping[] = {
1885 MAP ("l", BFD_RELOC_LO16),
1886 MAP ("h", BFD_RELOC_HI16),
1887 MAP ("ha", BFD_RELOC_HI16_S),
1888 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
1889 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
1890 MAP ("got", BFD_RELOC_16_GOTOFF),
1891 MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
1892 MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
1893 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
1894 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
1895 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
1896 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
1897 MAP ("copy", BFD_RELOC_PPC_COPY),
1898 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
1899 MAP ("sectoff", BFD_RELOC_16_BASEREL),
1900 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
1901 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
1902 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
1903 MAP ("tls", BFD_RELOC_PPC_TLS),
1904 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD),
1905 MAP ("dtprel", BFD_RELOC_PPC_DTPREL),
1906 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO),
1907 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI),
1908 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA),
1909 MAP ("tprel", BFD_RELOC_PPC_TPREL),
1910 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO),
1911 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI),
1912 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA),
1913 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16),
1914 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO),
1915 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI),
1916 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA),
1917 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16),
1918 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO),
1919 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI),
1920 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA),
1921 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16),
1922 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO),
1923 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI),
1924 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA),
1925 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16),
1926 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO),
1927 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI),
1928 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA),
1929 MAP32 ("fixup", BFD_RELOC_CTOR),
1930 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL),
1931 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL),
1932 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
1933 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC),
1934 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL),
1935 MAP32 ("sdarel", BFD_RELOC_GPREL16),
1936 MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A),
1937 MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A),
1938 MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A),
1939 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
1940 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
1941 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
1942 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
1943 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
1944 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
1945 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
1946 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
1947 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21),
1948 MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO),
1949 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
1950 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
1951 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
1952 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
1953 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
1954 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
1955 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
1956 MAP32 ("xgot", BFD_RELOC_PPC_TOC16),
1957 MAP64 ("high", BFD_RELOC_PPC64_ADDR16_HIGH),
1958 MAP64 ("higha", BFD_RELOC_PPC64_ADDR16_HIGHA),
1959 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER),
1960 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S),
1961 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST),
1962 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S),
1963 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC),
1964 MAP64 ("toc", BFD_RELOC_PPC_TOC16),
1965 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO),
1966 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI),
1967 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA),
1968 MAP64 ("dtprel@high", BFD_RELOC_PPC64_DTPREL16_HIGH),
1969 MAP64 ("dtprel@higha", BFD_RELOC_PPC64_DTPREL16_HIGHA),
1970 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER),
1971 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA),
1972 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST),
1973 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
1974 MAP64 ("localentry", BFD_RELOC_PPC64_ADDR64_LOCAL),
1975 MAP64 ("tprel@high", BFD_RELOC_PPC64_TPREL16_HIGH),
1976 MAP64 ("tprel@higha", BFD_RELOC_PPC64_TPREL16_HIGHA),
1977 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER),
1978 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA),
1979 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST),
1980 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA),
1981 { (char *) 0, 0, 0, 0, BFD_RELOC_NONE }
1985 return BFD_RELOC_NONE;
1987 for (ch = *str, str2 = ident;
1988 (str2 < ident + sizeof (ident) - 1
1989 && (ISALNUM (ch) || ch == '@'));
1992 *str2++ = TOLOWER (ch);
1999 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
2000 if (ch == ptr->string[0]
2001 && len == ptr->length
2002 && memcmp (ident, ptr->string, ptr->length) == 0
2003 && (ppc_obj64 ? ptr->valid64 : ptr->valid32))
2005 int reloc = ptr->reloc;
2007 if (!ppc_obj64 && exp_p->X_add_number != 0)
2011 case BFD_RELOC_16_GOTOFF:
2012 case BFD_RELOC_LO16_GOTOFF:
2013 case BFD_RELOC_HI16_GOTOFF:
2014 case BFD_RELOC_HI16_S_GOTOFF:
2015 as_warn (_("identifier+constant@got means "
2016 "identifier@got+constant"));
2019 case BFD_RELOC_PPC_GOT_TLSGD16:
2020 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
2021 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
2022 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
2023 case BFD_RELOC_PPC_GOT_TLSLD16:
2024 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
2025 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
2026 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
2027 case BFD_RELOC_PPC_GOT_DTPREL16:
2028 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
2029 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
2030 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
2031 case BFD_RELOC_PPC_GOT_TPREL16:
2032 case BFD_RELOC_PPC_GOT_TPREL16_LO:
2033 case BFD_RELOC_PPC_GOT_TPREL16_HI:
2034 case BFD_RELOC_PPC_GOT_TPREL16_HA:
2035 as_bad (_("symbol+offset not supported for got tls"));
2040 /* Now check for identifier@suffix+constant. */
2041 if (*str == '-' || *str == '+')
2043 char *orig_line = input_line_pointer;
2044 expressionS new_exp;
2046 input_line_pointer = str;
2047 expression (&new_exp);
2048 if (new_exp.X_op == O_constant)
2050 exp_p->X_add_number += new_exp.X_add_number;
2051 str = input_line_pointer;
2054 if (&input_line_pointer != str_p)
2055 input_line_pointer = orig_line;
2059 if (reloc == (int) BFD_RELOC_PPC64_TOC
2060 && exp_p->X_op == O_symbol
2061 && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0)
2063 /* Change the symbol so that the dummy .TOC. symbol can be
2064 omitted from the object file. */
2065 exp_p->X_add_symbol = &abs_symbol;
2068 return (bfd_reloc_code_real_type) reloc;
2071 return BFD_RELOC_NONE;
2074 /* Support @got, etc. on constants emitted via .short, .int etc. */
2076 bfd_reloc_code_real_type
2077 ppc_elf_parse_cons (expressionS *exp, unsigned int nbytes)
2080 if (nbytes >= 2 && *input_line_pointer == '@')
2081 return ppc_elf_suffix (&input_line_pointer, exp);
2082 return BFD_RELOC_NONE;
2085 /* Warn when emitting data to code sections, unless we are emitting
2086 a relocation that ld --ppc476-workaround uses to recognise data
2087 *and* there was an unconditional branch prior to the data. */
2090 ppc_elf_cons_fix_check (expressionS *exp ATTRIBUTE_UNUSED,
2091 unsigned int nbytes, fixS *fix)
2094 && (now_seg->flags & SEC_CODE) != 0
2097 || !(fix->fx_r_type == BFD_RELOC_32
2098 || fix->fx_r_type == BFD_RELOC_CTOR
2099 || fix->fx_r_type == BFD_RELOC_32_PCREL)
2100 || !(last_seg == now_seg && last_subseg == now_subseg)
2101 || !((last_insn & (0x3f << 26)) == (18u << 26)
2102 || ((last_insn & (0x3f << 26)) == (16u << 26)
2103 && (last_insn & (0x14 << 21)) == (0x14 << 21))
2104 || ((last_insn & (0x3f << 26)) == (19u << 26)
2105 && (last_insn & (0x3ff << 1)) == (16u << 1)
2106 && (last_insn & (0x14 << 21)) == (0x14 << 21)))))
2108 /* Flag that we've warned. */
2112 as_warn (_("data in executable section"));
2116 /* Solaris pseduo op to change to the .rodata section. */
2118 ppc_elf_rdata (int xxx)
2120 char *save_line = input_line_pointer;
2121 static char section[] = ".rodata\n";
2123 /* Just pretend this is .section .rodata */
2124 input_line_pointer = section;
2125 obj_elf_section (xxx);
2127 input_line_pointer = save_line;
2130 /* Pseudo op to make file scope bss items. */
2132 ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED)
2145 c = get_symbol_name (&name);
2147 /* Just after name is now '\0'. */
2148 p = input_line_pointer;
2150 SKIP_WHITESPACE_AFTER_NAME ();
2151 if (*input_line_pointer != ',')
2153 as_bad (_("expected comma after symbol-name: rest of line ignored."));
2154 ignore_rest_of_line ();
2158 input_line_pointer++; /* skip ',' */
2159 if ((size = get_absolute_expression ()) < 0)
2161 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
2162 ignore_rest_of_line ();
2166 /* The third argument to .lcomm is the alignment. */
2167 if (*input_line_pointer != ',')
2171 ++input_line_pointer;
2172 align = get_absolute_expression ();
2175 as_warn (_("ignoring bad alignment"));
2181 symbolP = symbol_find_or_make (name);
2184 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
2186 as_bad (_("ignoring attempt to re-define symbol `%s'."),
2187 S_GET_NAME (symbolP));
2188 ignore_rest_of_line ();
2192 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
2194 as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
2195 S_GET_NAME (symbolP),
2196 (long) S_GET_VALUE (symbolP),
2199 ignore_rest_of_line ();
2205 old_subsec = now_subseg;
2208 /* Convert to a power of 2 alignment. */
2209 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
2212 as_bad (_("common alignment not a power of 2"));
2213 ignore_rest_of_line ();
2220 record_alignment (bss_section, align2);
2221 subseg_set (bss_section, 1);
2223 frag_align (align2, 0, 0);
2224 if (S_GET_SEGMENT (symbolP) == bss_section)
2225 symbol_get_frag (symbolP)->fr_symbol = 0;
2226 symbol_set_frag (symbolP, frag_now);
2227 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
2230 S_SET_SIZE (symbolP, size);
2231 S_SET_SEGMENT (symbolP, bss_section);
2232 subseg_set (old_sec, old_subsec);
2233 demand_empty_rest_of_line ();
2236 /* Pseudo op to set symbol local entry point. */
2238 ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED)
2241 char c = get_symbol_name (&name);
2246 elf_symbol_type *elfsym;
2248 p = input_line_pointer;
2250 SKIP_WHITESPACE_AFTER_NAME ();
2251 if (*input_line_pointer != ',')
2254 as_bad (_("expected comma after name `%s' in .localentry directive"),
2257 ignore_rest_of_line ();
2260 input_line_pointer++;
2262 if (exp.X_op == O_absent)
2264 as_bad (_("missing expression in .localentry directive"));
2265 exp.X_op = O_constant;
2266 exp.X_add_number = 0;
2269 sym = symbol_find_or_make (name);
2272 if (resolve_expression (&exp)
2273 && exp.X_op == O_constant)
2275 unsigned char encoded = PPC64_SET_LOCAL_ENTRY_OFFSET (exp.X_add_number);
2277 if (exp.X_add_number != (offsetT) PPC64_LOCAL_ENTRY_OFFSET (encoded))
2278 as_bad (_(".localentry expression for `%s' "
2279 "is not a valid power of 2"), S_GET_NAME (sym));
2282 bfdsym = symbol_get_bfdsym (sym);
2283 elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym);
2284 gas_assert (elfsym);
2285 elfsym->internal_elf_sym.st_other &= ~STO_PPC64_LOCAL_MASK;
2286 elfsym->internal_elf_sym.st_other |= encoded;
2287 if (ppc_abiversion == 0)
2292 as_bad (_(".localentry expression for `%s' "
2293 "does not evaluate to a constant"), S_GET_NAME (sym));
2295 demand_empty_rest_of_line ();
2298 /* Pseudo op to set ABI version. */
2300 ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED)
2305 if (exp.X_op == O_absent)
2307 as_bad (_("missing expression in .abiversion directive"));
2308 exp.X_op = O_constant;
2309 exp.X_add_number = 0;
2312 if (resolve_expression (&exp)
2313 && exp.X_op == O_constant)
2314 ppc_abiversion = exp.X_add_number;
2316 as_bad (_(".abiversion expression does not evaluate to a constant"));
2317 demand_empty_rest_of_line ();
2320 /* Set ABI version in output file. */
2324 if (ppc_obj64 && ppc_abiversion != 0)
2326 elf_elfheader (stdoutput)->e_flags &= ~EF_PPC64_ABI;
2327 elf_elfheader (stdoutput)->e_flags |= ppc_abiversion & EF_PPC64_ABI;
2331 /* Validate any relocations emitted for -mrelocatable, possibly adding
2332 fixups for word relocations in writable segments, so we can adjust
2335 ppc_elf_validate_fix (fixS *fixp, segT seg)
2337 if (fixp->fx_done || fixp->fx_pcrel)
2346 case SHLIB_MRELOCATABLE:
2347 if (fixp->fx_r_type != BFD_RELOC_16_GOTOFF
2348 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
2349 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
2350 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
2351 && fixp->fx_r_type != BFD_RELOC_16_BASEREL
2352 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
2353 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
2354 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
2355 && (seg->flags & SEC_LOAD) != 0
2356 && strcmp (segment_name (seg), ".got2") != 0
2357 && strcmp (segment_name (seg), ".dtors") != 0
2358 && strcmp (segment_name (seg), ".ctors") != 0
2359 && strcmp (segment_name (seg), ".fixup") != 0
2360 && strcmp (segment_name (seg), ".gcc_except_table") != 0
2361 && strcmp (segment_name (seg), ".eh_frame") != 0
2362 && strcmp (segment_name (seg), ".ex_shared") != 0)
2364 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
2365 || fixp->fx_r_type != BFD_RELOC_CTOR)
2367 as_bad_where (fixp->fx_file, fixp->fx_line,
2368 _("relocation cannot be done when using -mrelocatable"));
2375 /* Prevent elf_frob_file_before_adjust removing a weak undefined
2376 function descriptor sym if the corresponding code sym is used. */
2379 ppc_frob_file_before_adjust (void)
2387 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
2394 name = S_GET_NAME (symp);
2398 if (! S_IS_WEAK (symp)
2399 || S_IS_DEFINED (symp))
2402 len = strlen (name) + 1;
2403 dotname = xmalloc (len + 1);
2405 memcpy (dotname + 1, name, len);
2406 dotsym = symbol_find_noref (dotname, 1);
2408 if (dotsym != NULL && (symbol_used_p (dotsym)
2409 || symbol_used_in_reloc_p (dotsym)))
2410 symbol_mark_used (symp);
2414 toc = bfd_get_section_by_name (stdoutput, ".toc");
2416 && toc_reloc_types != has_large_toc_reloc
2417 && bfd_section_size (stdoutput, toc) > 0x10000)
2418 as_warn (_("TOC section size exceeds 64k"));
2421 /* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be
2422 emitted. Other uses of .TOC. will cause the symbol to be marked
2423 with BSF_KEEP in md_apply_fix. */
2426 ppc_elf_adjust_symtab (void)
2431 symp = symbol_find (".TOC.");
2434 asymbol *bsym = symbol_get_bfdsym (symp);
2435 if ((bsym->flags & BSF_KEEP) == 0)
2436 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
2440 #endif /* OBJ_ELF */
2445 * Summary of parse_toc_entry.
2447 * in: Input_line_pointer points to the '[' in one of:
2449 * [toc] [tocv] [toc32] [toc64]
2451 * Anything else is an error of one kind or another.
2454 * return value: success or failure
2455 * toc_kind: kind of toc reference
2456 * input_line_pointer:
2457 * success: first char after the ']'
2458 * failure: unchanged
2462 * [toc] - rv == success, toc_kind = default_toc
2463 * [tocv] - rv == success, toc_kind = data_in_toc
2464 * [toc32] - rv == success, toc_kind = must_be_32
2465 * [toc64] - rv == success, toc_kind = must_be_64
2469 enum toc_size_qualifier
2471 default_toc, /* The toc cell constructed should be the system default size */
2472 data_in_toc, /* This is a direct reference to a toc cell */
2473 must_be_32, /* The toc cell constructed must be 32 bits wide */
2474 must_be_64 /* The toc cell constructed must be 64 bits wide */
2478 parse_toc_entry (enum toc_size_qualifier *toc_kind)
2483 enum toc_size_qualifier t;
2485 /* Save the input_line_pointer. */
2486 start = input_line_pointer;
2488 /* Skip over the '[' , and whitespace. */
2489 ++input_line_pointer;
2492 /* Find the spelling of the operand. */
2493 c = get_symbol_name (&toc_spec);
2495 if (strcmp (toc_spec, "toc") == 0)
2499 else if (strcmp (toc_spec, "tocv") == 0)
2503 else if (strcmp (toc_spec, "toc32") == 0)
2507 else if (strcmp (toc_spec, "toc64") == 0)
2513 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
2514 *input_line_pointer = c;
2515 input_line_pointer = start;
2519 /* Now find the ']'. */
2520 *input_line_pointer = c;
2522 SKIP_WHITESPACE_AFTER_NAME (); /* leading whitespace could be there. */
2523 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
2527 as_bad (_("syntax error: expected `]', found `%c'"), c);
2528 input_line_pointer = start;
2537 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
2538 /* See whether a symbol is in the TOC section. */
2541 ppc_is_toc_sym (symbolS *sym)
2544 return (symbol_get_tc (sym)->symbol_class == XMC_TC
2545 || symbol_get_tc (sym)->symbol_class == XMC_TC0);
2548 const char *sname = segment_name (S_GET_SEGMENT (sym));
2550 return strcmp (sname, ".toc") == 0;
2552 return strcmp (sname, ".got") == 0;
2555 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
2559 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2561 ppc_apuinfo_section_add (unsigned int apu, unsigned int version)
2565 /* Check we don't already exist. */
2566 for (i = 0; i < ppc_apuinfo_num; i++)
2567 if (ppc_apuinfo_list[i] == APUID (apu, version))
2570 if (ppc_apuinfo_num == ppc_apuinfo_num_alloc)
2572 if (ppc_apuinfo_num_alloc == 0)
2574 ppc_apuinfo_num_alloc = 4;
2575 ppc_apuinfo_list = (unsigned long *)
2576 xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2580 ppc_apuinfo_num_alloc += 4;
2581 ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list,
2582 sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2585 ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version);
2591 /* We need to keep a list of fixups. We can't simply generate them as
2592 we go, because that would require us to first create the frag, and
2593 that would screw up references to ``.''. */
2599 bfd_reloc_code_real_type reloc;
2602 #define MAX_INSN_FIXUPS (5)
2605 #define E_OR2I_INSN 0x7000C000
2606 #define E_AND2I_DOT_INSN 0x7000C800
2607 #define E_OR2IS_INSN 0x7000D000
2608 #define E_LIS_INSN 0x7000E000
2609 #define E_AND2IS_DOT_INSN 0x7000E800
2612 #define E_ADD2I_DOT_INSN 0x70008800
2613 #define E_ADD2IS_INSN 0x70009000
2614 #define E_CMP16I_INSN 0x70009800
2615 #define E_MULL2I_INSN 0x7000A000
2616 #define E_CMPL16I_INSN 0x7000A800
2617 #define E_CMPH16I_INSN 0x7000B000
2618 #define E_CMPHL16I_INSN 0x7000B800
2620 /* This routine is called for each instruction to be assembled. */
2623 md_assemble (char *str)
2626 const struct powerpc_opcode *opcode;
2628 const unsigned char *opindex_ptr;
2632 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
2637 unsigned int insn_length;
2639 /* Get the opcode. */
2640 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
2645 /* Look up the opcode in the hash table. */
2646 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
2647 if (opcode == (const struct powerpc_opcode *) NULL)
2649 const struct powerpc_macro *macro;
2651 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
2652 if (macro == (const struct powerpc_macro *) NULL)
2653 as_bad (_("unrecognized opcode: `%s'"), str);
2655 ppc_macro (s, macro);
2660 insn = opcode->opcode;
2663 while (ISSPACE (*str))
2666 /* PowerPC operands are just expressions. The only real issue is
2667 that a few operand types are optional. All cases which might use
2668 an optional operand separate the operands only with commas (in some
2669 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
2670 have optional operands). Most instructions with optional operands
2671 have only one. Those that have more than one optional operand can
2672 take either all their operands or none. So, before we start seriously
2673 parsing the operands, we check to see if we have optional operands,
2674 and if we do, we count the number of commas to see which operands
2675 have been omitted. */
2677 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2679 const struct powerpc_operand *operand;
2681 operand = &powerpc_operands[*opindex_ptr];
2682 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
2684 unsigned int opcount;
2685 unsigned int num_operands_expected;
2687 /* There is an optional operand. Count the number of
2688 commas in the input line. */
2695 while ((s = strchr (s, ',')) != (char *) NULL)
2702 /* Compute the number of expected operands.
2703 Do not count fake operands. */
2704 for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++)
2705 if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0)
2706 ++ num_operands_expected;
2708 /* If there are fewer operands in the line then are called
2709 for by the instruction, we want to skip the optional
2711 if (opcount < num_operands_expected)
2718 /* Gather the operands. */
2722 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2724 const struct powerpc_operand *operand;
2730 if (next_opindex == 0)
2731 operand = &powerpc_operands[*opindex_ptr];
2734 operand = &powerpc_operands[next_opindex];
2739 /* If this is a fake operand, then we do not expect anything
2741 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
2743 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2744 if (errmsg != (const char *) NULL)
2745 as_bad ("%s", errmsg);
2749 /* If this is an optional operand, and we are skipping it, just
2751 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
2754 long val = ppc_optional_operand_value (operand);
2755 if (operand->insert)
2757 insn = (*operand->insert) (insn, val, ppc_cpu, &errmsg);
2758 if (errmsg != (const char *) NULL)
2759 as_bad ("%s", errmsg);
2761 else if (operand->shift >= 0)
2762 insn |= ((long) val & operand->bitm) << operand->shift;
2764 insn |= ((long) val & operand->bitm) >> -operand->shift;
2766 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
2767 next_opindex = *opindex_ptr + 1;
2771 /* Gather the operand. */
2772 hold = input_line_pointer;
2773 input_line_pointer = str;
2776 if (*input_line_pointer == '[')
2778 /* We are expecting something like the second argument here:
2780 * lwz r4,[toc].GS.0.static_int(rtoc)
2781 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2782 * The argument following the `]' must be a symbol name, and the
2783 * register must be the toc register: 'rtoc' or '2'
2785 * The effect is to 0 as the displacement field
2786 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2787 * the appropriate variation) reloc against it based on the symbol.
2788 * The linker will build the toc, and insert the resolved toc offset.
2791 * o The size of the toc entry is currently assumed to be
2792 * 32 bits. This should not be assumed to be a hard coded
2794 * o In an effort to cope with a change from 32 to 64 bits,
2795 * there are also toc entries that are specified to be
2796 * either 32 or 64 bits:
2797 * lwz r4,[toc32].GS.0.static_int(rtoc)
2798 * lwz r4,[toc64].GS.0.static_int(rtoc)
2799 * These demand toc entries of the specified size, and the
2800 * instruction probably requires it.
2804 enum toc_size_qualifier toc_kind;
2805 bfd_reloc_code_real_type toc_reloc;
2807 /* Go parse off the [tocXX] part. */
2808 valid_toc = parse_toc_entry (&toc_kind);
2812 ignore_rest_of_line ();
2816 /* Now get the symbol following the ']'. */
2822 /* In this case, we may not have seen the symbol yet,
2823 since it is allowed to appear on a .extern or .globl
2824 or just be a label in the .data section. */
2825 toc_reloc = BFD_RELOC_PPC_TOC16;
2828 /* 1. The symbol must be defined and either in the toc
2829 section, or a global.
2830 2. The reloc generated must have the TOCDEFN flag set
2831 in upper bit mess of the reloc type.
2832 FIXME: It's a little confusing what the tocv
2833 qualifier can be used for. At the very least, I've
2834 seen three uses, only one of which I'm sure I can
2836 if (ex.X_op == O_symbol)
2838 gas_assert (ex.X_add_symbol != NULL);
2839 if (symbol_get_bfdsym (ex.X_add_symbol)->section
2842 as_bad (_("[tocv] symbol is not a toc symbol"));
2846 toc_reloc = BFD_RELOC_PPC_TOC16;
2849 /* FIXME: these next two specifically specify 32/64 bit
2850 toc entries. We don't support them today. Is this
2851 the right way to say that? */
2852 toc_reloc = BFD_RELOC_NONE;
2853 as_bad (_("unimplemented toc32 expression modifier"));
2856 /* FIXME: see above. */
2857 toc_reloc = BFD_RELOC_NONE;
2858 as_bad (_("unimplemented toc64 expression modifier"));
2862 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2868 /* We need to generate a fixup for this expression. */
2869 if (fc >= MAX_INSN_FIXUPS)
2870 as_fatal (_("too many fixups"));
2872 fixups[fc].reloc = toc_reloc;
2873 fixups[fc].exp = ex;
2874 fixups[fc].opindex = *opindex_ptr;
2877 /* Ok. We've set up the fixup for the instruction. Now make it
2878 look like the constant 0 was found here. */
2880 ex.X_op = O_constant;
2881 ex.X_add_number = 0;
2882 ex.X_add_symbol = NULL;
2883 ex.X_op_symbol = NULL;
2890 && (((operand->flags & PPC_OPERAND_CR_BIT) != 0)
2891 || ((operand->flags & PPC_OPERAND_CR_REG) != 0)))
2892 || !register_name (&ex))
2894 char save_lex = lex_type['%'];
2896 if (((operand->flags & PPC_OPERAND_CR_REG) != 0)
2897 || (operand->flags & PPC_OPERAND_CR_BIT) != 0)
2900 lex_type['%'] |= LEX_BEGIN_NAME;
2904 lex_type['%'] = save_lex;
2908 str = input_line_pointer;
2909 input_line_pointer = hold;
2911 if (ex.X_op == O_illegal)
2912 as_bad (_("illegal operand"));
2913 else if (ex.X_op == O_absent)
2914 as_bad (_("missing operand"));
2915 else if (ex.X_op == O_register)
2917 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2918 ppc_cpu, (char *) NULL, 0);
2920 else if (ex.X_op == O_constant)
2923 /* Allow @HA, @L, @H on constants. */
2924 bfd_reloc_code_real_type reloc;
2925 char *orig_str = str;
2927 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_NONE)
2934 case BFD_RELOC_LO16:
2935 ex.X_add_number &= 0xffff;
2936 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2937 ex.X_add_number = SEX16 (ex.X_add_number);
2940 case BFD_RELOC_HI16:
2941 if (REPORT_OVERFLOW_HI && ppc_obj64)
2943 /* PowerPC64 @h is tested for overflow. */
2944 ex.X_add_number = (addressT) ex.X_add_number >> 16;
2945 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2947 addressT sign = (((addressT) -1 >> 16) + 1) >> 1;
2949 = ((addressT) ex.X_add_number ^ sign) - sign;
2955 case BFD_RELOC_PPC64_ADDR16_HIGH:
2956 ex.X_add_number = PPC_HI (ex.X_add_number);
2957 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2958 ex.X_add_number = SEX16 (ex.X_add_number);
2961 case BFD_RELOC_HI16_S:
2962 if (REPORT_OVERFLOW_HI && ppc_obj64)
2964 /* PowerPC64 @ha is tested for overflow. */
2966 = ((addressT) ex.X_add_number + 0x8000) >> 16;
2967 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2969 addressT sign = (((addressT) -1 >> 16) + 1) >> 1;
2971 = ((addressT) ex.X_add_number ^ sign) - sign;
2977 case BFD_RELOC_PPC64_ADDR16_HIGHA:
2978 ex.X_add_number = PPC_HA (ex.X_add_number);
2979 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2980 ex.X_add_number = SEX16 (ex.X_add_number);
2983 case BFD_RELOC_PPC64_HIGHER:
2984 ex.X_add_number = PPC_HIGHER (ex.X_add_number);
2985 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2986 ex.X_add_number = SEX16 (ex.X_add_number);
2989 case BFD_RELOC_PPC64_HIGHER_S:
2990 ex.X_add_number = PPC_HIGHERA (ex.X_add_number);
2991 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2992 ex.X_add_number = SEX16 (ex.X_add_number);
2995 case BFD_RELOC_PPC64_HIGHEST:
2996 ex.X_add_number = PPC_HIGHEST (ex.X_add_number);
2997 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2998 ex.X_add_number = SEX16 (ex.X_add_number);
3001 case BFD_RELOC_PPC64_HIGHEST_S:
3002 ex.X_add_number = PPC_HIGHESTA (ex.X_add_number);
3003 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3004 ex.X_add_number = SEX16 (ex.X_add_number);
3007 #endif /* OBJ_ELF */
3008 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
3009 ppc_cpu, (char *) NULL, 0);
3013 bfd_reloc_code_real_type reloc = BFD_RELOC_NONE;
3015 if (ex.X_op == O_symbol && str[0] == '(')
3017 const char *sym_name = S_GET_NAME (ex.X_add_symbol);
3018 if (sym_name[0] == '.')
3021 if (strcasecmp (sym_name, "__tls_get_addr") == 0)
3023 expressionS tls_exp;
3025 hold = input_line_pointer;
3026 input_line_pointer = str + 1;
3027 expression (&tls_exp);
3028 if (tls_exp.X_op == O_symbol)
3030 reloc = BFD_RELOC_NONE;
3031 if (strncasecmp (input_line_pointer, "@tlsgd)", 7) == 0)
3033 reloc = BFD_RELOC_PPC_TLSGD;
3034 input_line_pointer += 7;
3036 else if (strncasecmp (input_line_pointer, "@tlsld)", 7) == 0)
3038 reloc = BFD_RELOC_PPC_TLSLD;
3039 input_line_pointer += 7;
3041 if (reloc != BFD_RELOC_NONE)
3044 str = input_line_pointer;
3046 if (fc >= MAX_INSN_FIXUPS)
3047 as_fatal (_("too many fixups"));
3048 fixups[fc].exp = tls_exp;
3049 fixups[fc].opindex = *opindex_ptr;
3050 fixups[fc].reloc = reloc;
3054 input_line_pointer = hold;
3058 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_NONE)
3060 /* Some TLS tweaks. */
3066 case BFD_RELOC_PPC_TLS:
3067 if (!_bfd_elf_ppc_at_tls_transform (opcode->opcode, 0))
3068 as_bad (_("@tls may not be used with \"%s\" operands"),
3070 else if (operand->shift != 11)
3071 as_bad (_("@tls may only be used in last operand"));
3073 insn = ppc_insert_operand (insn, operand,
3075 ppc_cpu, (char *) NULL, 0);
3078 /* We'll only use the 32 (or 64) bit form of these relocations
3079 in constants. Instructions get the 16 bit form. */
3080 case BFD_RELOC_PPC_DTPREL:
3081 reloc = BFD_RELOC_PPC_DTPREL16;
3083 case BFD_RELOC_PPC_TPREL:
3084 reloc = BFD_RELOC_PPC_TPREL16;
3088 /* If VLE-mode convert LO/HI/HA relocations. */
3089 if (opcode->flags & PPC_OPCODE_VLE)
3091 int tmp_insn = insn & opcode->mask;
3093 int use_d_reloc = (tmp_insn == E_OR2I_INSN
3094 || tmp_insn == E_AND2I_DOT_INSN
3095 || tmp_insn == E_OR2IS_INSN
3096 || tmp_insn == E_LIS_INSN
3097 || tmp_insn == E_AND2IS_DOT_INSN);
3100 int use_a_reloc = (tmp_insn == E_ADD2I_DOT_INSN
3101 || tmp_insn == E_ADD2IS_INSN
3102 || tmp_insn == E_CMP16I_INSN
3103 || tmp_insn == E_MULL2I_INSN
3104 || tmp_insn == E_CMPL16I_INSN
3105 || tmp_insn == E_CMPH16I_INSN
3106 || tmp_insn == E_CMPHL16I_INSN);
3113 case BFD_RELOC_PPC_EMB_SDA21:
3114 reloc = BFD_RELOC_PPC_VLE_SDA21;
3117 case BFD_RELOC_LO16:
3119 reloc = BFD_RELOC_PPC_VLE_LO16D;
3120 else if (use_a_reloc)
3121 reloc = BFD_RELOC_PPC_VLE_LO16A;
3124 case BFD_RELOC_HI16:
3126 reloc = BFD_RELOC_PPC_VLE_HI16D;
3127 else if (use_a_reloc)
3128 reloc = BFD_RELOC_PPC_VLE_HI16A;
3131 case BFD_RELOC_HI16_S:
3133 reloc = BFD_RELOC_PPC_VLE_HA16D;
3134 else if (use_a_reloc)
3135 reloc = BFD_RELOC_PPC_VLE_HA16A;
3138 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
3140 reloc = BFD_RELOC_PPC_VLE_SDAREL_LO16D;
3143 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
3145 reloc = BFD_RELOC_PPC_VLE_SDAREL_HI16D;
3148 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
3150 reloc = BFD_RELOC_PPC_VLE_SDAREL_HA16D;
3155 #endif /* OBJ_ELF */
3157 if (reloc != BFD_RELOC_NONE)
3159 /* Determine a BFD reloc value based on the operand information.
3160 We are only prepared to turn a few of the operands into
3162 else if ((operand->flags & (PPC_OPERAND_RELATIVE
3163 | PPC_OPERAND_ABSOLUTE)) != 0
3164 && operand->bitm == 0x3fffffc
3165 && operand->shift == 0)
3166 reloc = BFD_RELOC_PPC_B26;
3167 else if ((operand->flags & (PPC_OPERAND_RELATIVE
3168 | PPC_OPERAND_ABSOLUTE)) != 0
3169 && operand->bitm == 0xfffc
3170 && operand->shift == 0)
3171 reloc = BFD_RELOC_PPC_B16;
3172 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
3173 && operand->bitm == 0x1fe
3174 && operand->shift == -1)
3175 reloc = BFD_RELOC_PPC_VLE_REL8;
3176 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
3177 && operand->bitm == 0xfffe
3178 && operand->shift == 0)
3179 reloc = BFD_RELOC_PPC_VLE_REL15;
3180 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
3181 && operand->bitm == 0x1fffffe
3182 && operand->shift == 0)
3183 reloc = BFD_RELOC_PPC_VLE_REL24;
3184 else if ((operand->flags & PPC_OPERAND_NEGATIVE) == 0
3185 && (operand->bitm & 0xfff0) == 0xfff0
3186 && operand->shift == 0)
3188 reloc = BFD_RELOC_16;
3189 #if defined OBJ_XCOFF || defined OBJ_ELF
3190 /* Note: the symbol may be not yet defined. */
3191 if ((operand->flags & PPC_OPERAND_PARENS) != 0
3192 && ppc_is_toc_sym (ex.X_add_symbol))
3194 reloc = BFD_RELOC_PPC_TOC16;
3196 as_warn (_("assuming %s on symbol"),
3197 ppc_obj64 ? "@toc" : "@xgot");
3203 /* For the absolute forms of branches, convert the PC
3204 relative form back into the absolute. */
3205 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
3209 case BFD_RELOC_PPC_B26:
3210 reloc = BFD_RELOC_PPC_BA26;
3212 case BFD_RELOC_PPC_B16:
3213 reloc = BFD_RELOC_PPC_BA16;
3216 case BFD_RELOC_PPC_B16_BRTAKEN:
3217 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
3219 case BFD_RELOC_PPC_B16_BRNTAKEN:
3220 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
3231 case BFD_RELOC_PPC_TOC16:
3232 toc_reloc_types |= has_small_toc_reloc;
3234 case BFD_RELOC_PPC64_TOC16_LO:
3235 case BFD_RELOC_PPC64_TOC16_HI:
3236 case BFD_RELOC_PPC64_TOC16_HA:
3237 toc_reloc_types |= has_large_toc_reloc;
3244 && (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0)
3249 reloc = BFD_RELOC_PPC64_ADDR16_DS;
3251 case BFD_RELOC_LO16:
3252 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
3254 case BFD_RELOC_16_GOTOFF:
3255 reloc = BFD_RELOC_PPC64_GOT16_DS;
3257 case BFD_RELOC_LO16_GOTOFF:
3258 reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
3260 case BFD_RELOC_LO16_PLTOFF:
3261 reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
3263 case BFD_RELOC_16_BASEREL:
3264 reloc = BFD_RELOC_PPC64_SECTOFF_DS;
3266 case BFD_RELOC_LO16_BASEREL:
3267 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
3269 case BFD_RELOC_PPC_TOC16:
3270 reloc = BFD_RELOC_PPC64_TOC16_DS;
3272 case BFD_RELOC_PPC64_TOC16_LO:
3273 reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
3275 case BFD_RELOC_PPC64_PLTGOT16:
3276 reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
3278 case BFD_RELOC_PPC64_PLTGOT16_LO:
3279 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
3281 case BFD_RELOC_PPC_DTPREL16:
3282 reloc = BFD_RELOC_PPC64_DTPREL16_DS;
3284 case BFD_RELOC_PPC_DTPREL16_LO:
3285 reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS;
3287 case BFD_RELOC_PPC_TPREL16:
3288 reloc = BFD_RELOC_PPC64_TPREL16_DS;
3290 case BFD_RELOC_PPC_TPREL16_LO:
3291 reloc = BFD_RELOC_PPC64_TPREL16_LO_DS;
3293 case BFD_RELOC_PPC_GOT_DTPREL16:
3294 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
3295 case BFD_RELOC_PPC_GOT_TPREL16:
3296 case BFD_RELOC_PPC_GOT_TPREL16_LO:
3299 as_bad (_("unsupported relocation for DS offset field"));
3305 /* We need to generate a fixup for this expression. */
3306 if (fc >= MAX_INSN_FIXUPS)
3307 as_fatal (_("too many fixups"));
3308 fixups[fc].exp = ex;
3309 fixups[fc].opindex = *opindex_ptr;
3310 fixups[fc].reloc = reloc;
3318 /* If expecting more operands, then we want to see "),". */
3319 if (*str == endc && opindex_ptr[1] != 0)
3323 while (ISSPACE (*str));
3327 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
3335 /* The call to expression should have advanced str past any
3338 && (endc != ',' || *str != '\0'))
3341 as_bad (_("syntax error; end of line, expected `%c'"), endc);
3343 as_bad (_("syntax error; found `%c', expected `%c'"), *str, endc);
3351 while (ISSPACE (*str))
3355 as_bad (_("junk at end of line: `%s'"), str);
3358 /* Do we need/want an APUinfo section? */
3359 if ((ppc_cpu & (PPC_OPCODE_E500 | PPC_OPCODE_E500MC | PPC_OPCODE_VLE)) != 0
3362 /* These are all version "1". */
3363 if (opcode->flags & PPC_OPCODE_SPE)
3364 ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1);
3365 if (opcode->flags & PPC_OPCODE_ISEL)
3366 ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1);
3367 if (opcode->flags & PPC_OPCODE_EFS)
3368 ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1);
3369 if (opcode->flags & PPC_OPCODE_BRLOCK)
3370 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1);
3371 if (opcode->flags & PPC_OPCODE_PMR)
3372 ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1);
3373 if (opcode->flags & PPC_OPCODE_CACHELCK)
3374 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1);
3375 if (opcode->flags & PPC_OPCODE_RFMCI)
3376 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1);
3377 /* Only set the VLE flag if the instruction has been pulled via
3378 the VLE instruction set. This way the flag is guaranteed to
3379 be set for VLE-only instructions or for VLE-only processors,
3380 however it'll remain clear for dual-mode instructions on
3381 dual-mode and, more importantly, standard-mode processors. */
3382 if ((ppc_cpu & opcode->flags) == PPC_OPCODE_VLE)
3383 ppc_apuinfo_section_add (PPC_APUINFO_VLE, 1);
3387 /* Write out the instruction. */
3388 /* Differentiate between two and four byte insns. */
3389 if (ppc_mach () == bfd_mach_ppc_vle)
3391 if (PPC_OP_SE_VLE (insn))
3395 addr_mod = frag_now_fix () & 1;
3400 addr_mod = frag_now_fix () & 3;
3402 /* All instructions can start on a 2 byte boundary for VLE. */
3403 f = frag_more (insn_length);
3404 if (frag_now->has_code && frag_now->insn_addr != addr_mod)
3406 if (ppc_mach() == bfd_mach_ppc_vle)
3407 as_bad (_("instruction address is not a multiple of 2"));
3409 as_bad (_("instruction address is not a multiple of 4"));
3411 frag_now->insn_addr = addr_mod;
3412 frag_now->has_code = 1;
3413 md_number_to_chars (f, insn, insn_length);
3416 last_subseg = now_subseg;
3419 dwarf2_emit_insn (insn_length);
3422 /* Create any fixups. */
3423 for (i = 0; i < fc; i++)
3426 if (fixups[i].reloc != BFD_RELOC_NONE)
3428 reloc_howto_type *reloc_howto;
3432 reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
3436 size = bfd_get_reloc_size (reloc_howto);
3437 offset = target_big_endian ? (insn_length - size) : 0;
3439 fixP = fix_new_exp (frag_now,
3440 f - frag_now->fr_literal + offset,
3443 reloc_howto->pc_relative,
3448 const struct powerpc_operand *operand;
3450 operand = &powerpc_operands[fixups[i].opindex];
3451 fixP = fix_new_exp (frag_now,
3452 f - frag_now->fr_literal,
3455 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
3458 fixP->fx_pcrel_adjust = fixups[i].opindex;
3462 /* Handle a macro. Gather all the operands, transform them as
3463 described by the macro, and call md_assemble recursively. All the
3464 operands are separated by commas; we don't accept parentheses
3465 around operands here. */
3468 ppc_macro (char *str, const struct powerpc_macro *macro)
3479 /* Gather the users operands into the operands array. */
3484 if (count >= sizeof operands / sizeof operands[0])
3486 operands[count++] = s;
3487 s = strchr (s, ',');
3488 if (s == (char *) NULL)
3493 if (count != macro->operands)
3495 as_bad (_("wrong number of operands"));
3499 /* Work out how large the string must be (the size is unbounded
3500 because it includes user input). */
3502 format = macro->format;
3503 while (*format != '\0')
3512 arg = strtol (format + 1, &send, 10);
3513 know (send != format && arg < count);
3514 len += strlen (operands[arg]);
3519 /* Put the string together. */
3520 complete = s = (char *) alloca (len + 1);
3521 format = macro->format;
3522 while (*format != '\0')
3528 arg = strtol (format + 1, &send, 10);
3529 strcpy (s, operands[arg]);
3536 /* Assemble the constructed instruction. */
3537 md_assemble (complete);
3541 /* For ELF, add support for SHT_ORDERED. */
3544 ppc_section_type (char *str, size_t len)
3546 if (len == 7 && strncmp (str, "ordered", 7) == 0)
3553 ppc_section_flags (flagword flags, bfd_vma attr ATTRIBUTE_UNUSED, int type)
3555 if (type == SHT_ORDERED)
3556 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
3560 #endif /* OBJ_ELF */
3563 /* Pseudo-op handling. */
3565 /* The .byte pseudo-op. This is similar to the normal .byte
3566 pseudo-op, but it can also take a single ASCII string. */
3569 ppc_byte (int ignore ATTRIBUTE_UNUSED)
3573 if (*input_line_pointer != '\"')
3579 /* Gather characters. A real double quote is doubled. Unusual
3580 characters are not permitted. */
3581 ++input_line_pointer;
3586 c = *input_line_pointer++;
3590 if (*input_line_pointer != '\"')
3592 ++input_line_pointer;
3595 FRAG_APPEND_1_CHAR (c);
3599 if (warn_476 && count != 0 && (now_seg->flags & SEC_CODE) != 0)
3600 as_warn (_("data in executable section"));
3601 demand_empty_rest_of_line ();
3606 /* XCOFF specific pseudo-op handling. */
3608 /* This is set if we are creating a .stabx symbol, since we don't want
3609 to handle symbol suffixes for such symbols. */
3610 static bfd_boolean ppc_stab_symbol;
3612 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
3613 symbols in the .bss segment as though they were local common
3614 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
3615 aligns .comm and .lcomm to 4 bytes. */
3618 ppc_comm (int lcomm)
3620 asection *current_seg = now_seg;
3621 subsegT current_subseg = now_subseg;
3627 symbolS *lcomm_sym = NULL;
3631 endc = get_symbol_name (&name);
3632 end_name = input_line_pointer;
3633 (void) restore_line_pointer (endc);
3635 if (*input_line_pointer != ',')
3637 as_bad (_("missing size"));
3638 ignore_rest_of_line ();
3641 ++input_line_pointer;
3643 size = get_absolute_expression ();
3646 as_bad (_("negative size"));
3647 ignore_rest_of_line ();
3653 /* The third argument to .comm is the alignment. */
3654 if (*input_line_pointer != ',')
3658 ++input_line_pointer;
3659 align = get_absolute_expression ();
3662 as_warn (_("ignoring bad alignment"));
3672 /* The third argument to .lcomm appears to be the real local
3673 common symbol to create. References to the symbol named in
3674 the first argument are turned into references to the third
3676 if (*input_line_pointer != ',')
3678 as_bad (_("missing real symbol name"));
3679 ignore_rest_of_line ();
3682 ++input_line_pointer;
3684 lcomm_endc = get_symbol_name (&lcomm_name);
3686 lcomm_sym = symbol_find_or_make (lcomm_name);
3688 (void) restore_line_pointer (lcomm_endc);
3690 /* The fourth argument to .lcomm is the alignment. */
3691 if (*input_line_pointer != ',')
3700 ++input_line_pointer;
3701 align = get_absolute_expression ();
3704 as_warn (_("ignoring bad alignment"));
3711 sym = symbol_find_or_make (name);
3714 if (S_IS_DEFINED (sym)
3715 || S_GET_VALUE (sym) != 0)
3717 as_bad (_("attempt to redefine symbol"));
3718 ignore_rest_of_line ();
3722 record_alignment (bss_section, align);
3725 || ! S_IS_DEFINED (lcomm_sym))
3734 S_SET_EXTERNAL (sym);
3738 symbol_get_tc (lcomm_sym)->output = 1;
3739 def_sym = lcomm_sym;
3743 subseg_set (bss_section, 1);
3744 frag_align (align, 0, 0);
3746 symbol_set_frag (def_sym, frag_now);
3747 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
3748 def_size, (char *) NULL);
3750 S_SET_SEGMENT (def_sym, bss_section);
3751 symbol_get_tc (def_sym)->align = align;
3755 /* Align the size of lcomm_sym. */
3756 symbol_get_frag (lcomm_sym)->fr_offset =
3757 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
3758 &~ ((1 << align) - 1));
3759 if (align > symbol_get_tc (lcomm_sym)->align)
3760 symbol_get_tc (lcomm_sym)->align = align;
3765 /* Make sym an offset from lcomm_sym. */
3766 S_SET_SEGMENT (sym, bss_section);
3767 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
3768 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
3769 symbol_get_frag (lcomm_sym)->fr_offset += size;
3772 subseg_set (current_seg, current_subseg);
3774 demand_empty_rest_of_line ();
3777 /* The .csect pseudo-op. This switches us into a different
3778 subsegment. The first argument is a symbol whose value is the
3779 start of the .csect. In COFF, csect symbols get special aux
3780 entries defined by the x_csect field of union internal_auxent. The
3781 optional second argument is the alignment (the default is 2). */
3784 ppc_csect (int ignore ATTRIBUTE_UNUSED)
3791 endc = get_symbol_name (&name);
3793 sym = symbol_find_or_make (name);
3795 (void) restore_line_pointer (endc);
3797 if (S_GET_NAME (sym)[0] == '\0')
3799 /* An unnamed csect is assumed to be [PR]. */
3800 symbol_get_tc (sym)->symbol_class = XMC_PR;
3804 if (*input_line_pointer == ',')
3806 ++input_line_pointer;
3807 align = get_absolute_expression ();
3810 ppc_change_csect (sym, align);
3812 demand_empty_rest_of_line ();
3815 /* Change to a different csect. */
3818 ppc_change_csect (symbolS *sym, offsetT align)
3820 if (S_IS_DEFINED (sym))
3821 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
3831 /* This is a new csect. We need to look at the symbol class to
3832 figure out whether it should go in the text section or the
3836 switch (symbol_get_tc (sym)->symbol_class)
3846 S_SET_SEGMENT (sym, text_section);
3847 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
3848 ++ppc_text_subsegment;
3849 list_ptr = &ppc_text_csects;
3859 if (ppc_toc_csect != NULL
3860 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
3861 == ppc_data_subsegment))
3863 S_SET_SEGMENT (sym, data_section);
3864 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
3865 ++ppc_data_subsegment;
3866 list_ptr = &ppc_data_csects;
3872 /* We set the obstack chunk size to a small value before
3873 changing subsegments, so that we don't use a lot of memory
3874 space for what may be a small section. */
3875 hold_chunksize = chunksize;
3878 sec = subseg_new (segment_name (S_GET_SEGMENT (sym)),
3879 symbol_get_tc (sym)->subseg);
3881 chunksize = hold_chunksize;
3884 ppc_after_toc_frag = frag_now;
3886 record_alignment (sec, align);
3888 frag_align_code (align, 0);
3890 frag_align (align, 0, 0);
3892 symbol_set_frag (sym, frag_now);
3893 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3895 symbol_get_tc (sym)->align = align;
3896 symbol_get_tc (sym)->output = 1;
3897 symbol_get_tc (sym)->within = sym;
3899 for (list = *list_ptr;
3900 symbol_get_tc (list)->next != (symbolS *) NULL;
3901 list = symbol_get_tc (list)->next)
3903 symbol_get_tc (list)->next = sym;
3905 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3906 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3910 ppc_current_csect = sym;
3914 ppc_change_debug_section (unsigned int idx, subsegT subseg)
3918 const struct xcoff_dwsect_name *dw = &xcoff_dwsect_names[idx];
3920 sec = subseg_new (dw->name, subseg);
3921 oldflags = bfd_get_section_flags (stdoutput, sec);
3922 if (oldflags == SEC_NO_FLAGS)
3924 /* Just created section. */
3925 gas_assert (dw_sections[idx].sect == NULL);
3927 bfd_set_section_flags (stdoutput, sec, SEC_DEBUGGING);
3928 bfd_set_section_alignment (stdoutput, sec, 0);
3929 dw_sections[idx].sect = sec;
3932 /* Not anymore in a csect. */
3933 ppc_current_csect = NULL;
3936 /* The .dwsect pseudo-op. Defines a DWARF section. Syntax is:
3937 .dwsect flag [, opt-label ]
3941 ppc_dwsect (int ignore ATTRIBUTE_UNUSED)
3945 const struct xcoff_dwsect_name *dw;
3946 struct dw_subsection *subseg;
3947 struct dw_section *dws;
3951 flag = get_absolute_expression ();
3953 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
3954 if (xcoff_dwsect_names[i].flag == flag)
3956 dw = &xcoff_dwsect_names[i];
3960 /* Parse opt-label. */
3961 if (*input_line_pointer == ',')
3966 ++input_line_pointer;
3968 c = get_symbol_name (&label);
3969 opt_label = symbol_find_or_make (label);
3970 (void) restore_line_pointer (c);
3975 demand_empty_rest_of_line ();
3977 /* Return now in case of unknown subsection. */
3980 as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"),
3985 /* Find the subsection. */
3986 dws = &dw_sections[i];
3988 if (opt_label != NULL && S_IS_DEFINED (opt_label))
3990 /* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */
3991 if (dws->sect == NULL || S_GET_SEGMENT (opt_label) != dws->sect)
3993 as_bad (_("label %s was not defined in this dwarf section"),
3994 S_GET_NAME (opt_label));
3995 subseg = dws->anon_subseg;
3999 subseg = symbol_get_tc (opt_label)->u.dw;
4004 /* Switch to the subsection. */
4005 ppc_change_debug_section (i, subseg->subseg);
4009 /* Create a new dw subsection. */
4010 subseg = (struct dw_subsection *)
4011 xmalloc (sizeof (struct dw_subsection));
4013 if (opt_label == NULL)
4015 /* The anonymous one. */
4017 subseg->link = NULL;
4018 dws->anon_subseg = subseg;
4023 if (dws->list_subseg != NULL)
4024 subseg->subseg = dws->list_subseg->subseg + 1;
4028 subseg->link = dws->list_subseg;
4029 dws->list_subseg = subseg;
4030 symbol_get_tc (opt_label)->u.dw = subseg;
4033 ppc_change_debug_section (i, subseg->subseg);
4037 /* Add the length field. */
4038 expressionS *exp = &subseg->end_exp;
4041 if (opt_label != NULL)
4042 symbol_set_value_now (opt_label);
4044 /* Add the length field. Note that according to the AIX assembler
4045 manual, the size of the length field is 4 for powerpc32 but
4046 12 for powerpc64. */
4049 /* Write the 64bit marker. */
4050 md_number_to_chars (frag_more (4), -1, 4);
4053 exp->X_op = O_subtract;
4054 exp->X_op_symbol = symbol_temp_new_now ();
4055 exp->X_add_symbol = symbol_temp_make ();
4057 sz = ppc_obj64 ? 8 : 4;
4058 exp->X_add_number = -sz;
4059 emit_expr (exp, sz);
4064 /* This function handles the .text and .data pseudo-ops. These
4065 pseudo-ops aren't really used by XCOFF; we implement them for the
4066 convenience of people who aren't used to XCOFF. */
4069 ppc_section (int type)
4076 else if (type == 'd')
4081 sym = symbol_find_or_make (name);
4083 ppc_change_csect (sym, 2);
4085 demand_empty_rest_of_line ();
4088 /* This function handles the .section pseudo-op. This is mostly to
4089 give an error, since XCOFF only supports .text, .data and .bss, but
4090 we do permit the user to name the text or data section. */
4093 ppc_named_section (int ignore ATTRIBUTE_UNUSED)
4096 const char *real_name;
4100 c = get_symbol_name (&user_name);
4102 if (strcmp (user_name, ".text") == 0)
4103 real_name = ".text[PR]";
4104 else if (strcmp (user_name, ".data") == 0)
4105 real_name = ".data[RW]";
4108 as_bad (_("the XCOFF file format does not support arbitrary sections"));
4109 (void) restore_line_pointer (c);
4110 ignore_rest_of_line ();
4114 (void) restore_line_pointer (c);
4116 sym = symbol_find_or_make (real_name);
4118 ppc_change_csect (sym, 2);
4120 demand_empty_rest_of_line ();
4123 /* The .extern pseudo-op. We create an undefined symbol. */
4126 ppc_extern (int ignore ATTRIBUTE_UNUSED)
4131 endc = get_symbol_name (&name);
4133 (void) symbol_find_or_make (name);
4135 (void) restore_line_pointer (endc);
4137 demand_empty_rest_of_line ();
4140 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
4143 ppc_lglobl (int ignore ATTRIBUTE_UNUSED)
4149 endc = get_symbol_name (&name);
4151 sym = symbol_find_or_make (name);
4153 (void) restore_line_pointer (endc);
4155 symbol_get_tc (sym)->output = 1;
4157 demand_empty_rest_of_line ();
4160 /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF
4161 relocations at the beginning of the current csect.
4163 (In principle, there's no reason why the relocations _have_ to be at
4164 the beginning. Anywhere in the csect would do. However, inserting
4165 at the beginning is what the native assmebler does, and it helps to
4166 deal with cases where the .ref statements follow the section contents.)
4168 ??? .refs don't work for empty .csects. However, the native assembler
4169 doesn't report an error in this case, and neither yet do we. */
4172 ppc_ref (int ignore ATTRIBUTE_UNUSED)
4177 if (ppc_current_csect == NULL)
4179 as_bad (_(".ref outside .csect"));
4180 ignore_rest_of_line ();
4186 c = get_symbol_name (&name);
4188 fix_at_start (symbol_get_frag (ppc_current_csect), 0,
4189 symbol_find_or_make (name), 0, FALSE, BFD_RELOC_NONE);
4191 *input_line_pointer = c;
4192 SKIP_WHITESPACE_AFTER_NAME ();
4193 c = *input_line_pointer;
4196 input_line_pointer++;
4198 if (is_end_of_line[(unsigned char) *input_line_pointer])
4200 as_bad (_("missing symbol name"));
4201 ignore_rest_of_line ();
4208 demand_empty_rest_of_line ();
4211 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
4212 although I don't know why it bothers. */
4215 ppc_rename (int ignore ATTRIBUTE_UNUSED)
4222 endc = get_symbol_name (&name);
4224 sym = symbol_find_or_make (name);
4226 (void) restore_line_pointer (endc);
4228 if (*input_line_pointer != ',')
4230 as_bad (_("missing rename string"));
4231 ignore_rest_of_line ();
4234 ++input_line_pointer;
4236 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
4238 demand_empty_rest_of_line ();
4241 /* The .stabx pseudo-op. This is similar to a normal .stabs
4242 pseudo-op, but slightly different. A sample is
4243 .stabx "main:F-1",.main,142,0
4244 The first argument is the symbol name to create. The second is the
4245 value, and the third is the storage class. The fourth seems to be
4246 always zero, and I am assuming it is the type. */
4249 ppc_stabx (int ignore ATTRIBUTE_UNUSED)
4256 name = demand_copy_C_string (&len);
4258 if (*input_line_pointer != ',')
4260 as_bad (_("missing value"));
4263 ++input_line_pointer;
4265 ppc_stab_symbol = TRUE;
4266 sym = symbol_make (name);
4267 ppc_stab_symbol = FALSE;
4269 symbol_get_tc (sym)->real_name = name;
4271 (void) expression (&exp);
4278 as_bad (_("illegal .stabx expression; zero assumed"));
4279 exp.X_add_number = 0;
4282 S_SET_VALUE (sym, (valueT) exp.X_add_number);
4283 symbol_set_frag (sym, &zero_address_frag);
4287 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
4288 symbol_set_value_expression (sym, &exp);
4292 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
4293 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
4298 /* The value is some complex expression. This will probably
4299 fail at some later point, but this is probably the right
4300 thing to do here. */
4301 symbol_set_value_expression (sym, &exp);
4305 S_SET_SEGMENT (sym, ppc_coff_debug_section);
4306 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4308 if (*input_line_pointer != ',')
4310 as_bad (_("missing class"));
4313 ++input_line_pointer;
4315 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
4317 if (*input_line_pointer != ',')
4319 as_bad (_("missing type"));
4322 ++input_line_pointer;
4324 S_SET_DATA_TYPE (sym, get_absolute_expression ());
4326 symbol_get_tc (sym)->output = 1;
4328 if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
4333 .stabx "z",arrays_,133,0
4336 .comm arrays_,13768,3
4338 resolve_symbol_value will copy the exp's "within" into sym's when the
4339 offset is 0. Since this seems to be corner case problem,
4340 only do the correction for storage class C_STSYM. A better solution
4341 would be to have the tc field updated in ppc_symbol_new_hook. */
4343 if (exp.X_op == O_symbol)
4345 if (ppc_current_block == NULL)
4346 as_bad (_(".stabx of storage class stsym must be within .bs/.es"));
4348 symbol_get_tc (sym)->within = ppc_current_block;
4349 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
4353 if (exp.X_op != O_symbol
4354 || ! S_IS_EXTERNAL (exp.X_add_symbol)
4355 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
4356 ppc_frob_label (sym);
4359 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4360 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
4361 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
4362 symbol_get_tc (ppc_current_csect)->within = sym;
4365 demand_empty_rest_of_line ();
4368 /* The .function pseudo-op. This takes several arguments. The first
4369 argument seems to be the external name of the symbol. The second
4370 argument seems to be the label for the start of the function. gcc
4371 uses the same name for both. I have no idea what the third and
4372 fourth arguments are meant to be. The optional fifth argument is
4373 an expression for the size of the function. In COFF this symbol
4374 gets an aux entry like that used for a csect. */
4377 ppc_function (int ignore ATTRIBUTE_UNUSED)
4385 endc = get_symbol_name (&name);
4387 /* Ignore any [PR] suffix. */
4388 name = ppc_canonicalize_symbol_name (name);
4389 s = strchr (name, '[');
4390 if (s != (char *) NULL
4391 && strcmp (s + 1, "PR]") == 0)
4394 ext_sym = symbol_find_or_make (name);
4396 (void) restore_line_pointer (endc);
4398 if (*input_line_pointer != ',')
4400 as_bad (_("missing symbol name"));
4401 ignore_rest_of_line ();
4404 ++input_line_pointer;
4406 endc = get_symbol_name (&name);
4408 lab_sym = symbol_find_or_make (name);
4410 (void) restore_line_pointer (endc);
4412 if (ext_sym != lab_sym)
4416 exp.X_op = O_symbol;
4417 exp.X_add_symbol = lab_sym;
4418 exp.X_op_symbol = NULL;
4419 exp.X_add_number = 0;
4421 symbol_set_value_expression (ext_sym, &exp);
4424 if (symbol_get_tc (ext_sym)->symbol_class == -1)
4425 symbol_get_tc (ext_sym)->symbol_class = XMC_PR;
4426 symbol_get_tc (ext_sym)->output = 1;
4428 if (*input_line_pointer == ',')
4432 /* Ignore the third argument. */
4433 ++input_line_pointer;
4435 if (*input_line_pointer == ',')
4437 /* Ignore the fourth argument. */
4438 ++input_line_pointer;
4440 if (*input_line_pointer == ',')
4442 /* The fifth argument is the function size. */
4443 ++input_line_pointer;
4444 symbol_get_tc (ext_sym)->u.size = symbol_new
4445 ("L0\001", absolute_section,(valueT) 0, &zero_address_frag);
4446 pseudo_set (symbol_get_tc (ext_sym)->u.size);
4451 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
4452 SF_SET_FUNCTION (ext_sym);
4453 SF_SET_PROCESS (ext_sym);
4454 coff_add_linesym (ext_sym);
4456 demand_empty_rest_of_line ();
4459 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
4460 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
4461 with the correct line number */
4463 static symbolS *saved_bi_sym = 0;
4466 ppc_bf (int ignore ATTRIBUTE_UNUSED)
4470 sym = symbol_make (".bf");
4471 S_SET_SEGMENT (sym, text_section);
4472 symbol_set_frag (sym, frag_now);
4473 S_SET_VALUE (sym, frag_now_fix ());
4474 S_SET_STORAGE_CLASS (sym, C_FCN);
4476 coff_line_base = get_absolute_expression ();
4478 S_SET_NUMBER_AUXILIARY (sym, 1);
4479 SA_SET_SYM_LNNO (sym, coff_line_base);
4481 /* Line number for bi. */
4484 S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
4489 symbol_get_tc (sym)->output = 1;
4491 ppc_frob_label (sym);
4493 demand_empty_rest_of_line ();
4496 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
4497 ".ef", except that the line number is absolute, not relative to the
4498 most recent ".bf" symbol. */
4501 ppc_ef (int ignore ATTRIBUTE_UNUSED)
4505 sym = symbol_make (".ef");
4506 S_SET_SEGMENT (sym, text_section);
4507 symbol_set_frag (sym, frag_now);
4508 S_SET_VALUE (sym, frag_now_fix ());
4509 S_SET_STORAGE_CLASS (sym, C_FCN);
4510 S_SET_NUMBER_AUXILIARY (sym, 1);
4511 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
4512 symbol_get_tc (sym)->output = 1;
4514 ppc_frob_label (sym);
4516 demand_empty_rest_of_line ();
4519 /* The .bi and .ei pseudo-ops. These take a string argument and
4520 generates a C_BINCL or C_EINCL symbol, which goes at the start of
4521 the symbol list. The value of .bi will be know when the next .bf
4527 static symbolS *last_biei;
4534 name = demand_copy_C_string (&len);
4536 /* The value of these symbols is actually file offset. Here we set
4537 the value to the index into the line number entries. In
4538 ppc_frob_symbols we set the fix_line field, which will cause BFD
4539 to do the right thing. */
4541 sym = symbol_make (name);
4542 /* obj-coff.c currently only handles line numbers correctly in the
4544 S_SET_SEGMENT (sym, text_section);
4545 S_SET_VALUE (sym, coff_n_line_nos);
4546 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4548 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
4549 symbol_get_tc (sym)->output = 1;
4557 for (look = last_biei ? last_biei : symbol_rootP;
4558 (look != (symbolS *) NULL
4559 && (S_GET_STORAGE_CLASS (look) == C_FILE
4560 || S_GET_STORAGE_CLASS (look) == C_BINCL
4561 || S_GET_STORAGE_CLASS (look) == C_EINCL));
4562 look = symbol_next (look))
4564 if (look != (symbolS *) NULL)
4566 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4567 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
4571 demand_empty_rest_of_line ();
4574 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
4575 There is one argument, which is a csect symbol. The value of the
4576 .bs symbol is the index of this csect symbol. */
4579 ppc_bs (int ignore ATTRIBUTE_UNUSED)
4586 if (ppc_current_block != NULL)
4587 as_bad (_("nested .bs blocks"));
4589 endc = get_symbol_name (&name);
4591 csect = symbol_find_or_make (name);
4593 (void) restore_line_pointer (endc);
4595 sym = symbol_make (".bs");
4596 S_SET_SEGMENT (sym, now_seg);
4597 S_SET_STORAGE_CLASS (sym, C_BSTAT);
4598 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4599 symbol_get_tc (sym)->output = 1;
4601 symbol_get_tc (sym)->within = csect;
4603 ppc_frob_label (sym);
4605 ppc_current_block = sym;
4607 demand_empty_rest_of_line ();
4610 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
4613 ppc_es (int ignore ATTRIBUTE_UNUSED)
4617 if (ppc_current_block == NULL)
4618 as_bad (_(".es without preceding .bs"));
4620 sym = symbol_make (".es");
4621 S_SET_SEGMENT (sym, now_seg);
4622 S_SET_STORAGE_CLASS (sym, C_ESTAT);
4623 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4624 symbol_get_tc (sym)->output = 1;
4626 ppc_frob_label (sym);
4628 ppc_current_block = NULL;
4630 demand_empty_rest_of_line ();
4633 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
4637 ppc_bb (int ignore ATTRIBUTE_UNUSED)
4641 sym = symbol_make (".bb");
4642 S_SET_SEGMENT (sym, text_section);
4643 symbol_set_frag (sym, frag_now);
4644 S_SET_VALUE (sym, frag_now_fix ());
4645 S_SET_STORAGE_CLASS (sym, C_BLOCK);
4647 S_SET_NUMBER_AUXILIARY (sym, 1);
4648 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
4650 symbol_get_tc (sym)->output = 1;
4652 SF_SET_PROCESS (sym);
4654 ppc_frob_label (sym);
4656 demand_empty_rest_of_line ();
4659 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
4663 ppc_eb (int ignore ATTRIBUTE_UNUSED)
4667 sym = symbol_make (".eb");
4668 S_SET_SEGMENT (sym, text_section);
4669 symbol_set_frag (sym, frag_now);
4670 S_SET_VALUE (sym, frag_now_fix ());
4671 S_SET_STORAGE_CLASS (sym, C_BLOCK);
4672 S_SET_NUMBER_AUXILIARY (sym, 1);
4673 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
4674 symbol_get_tc (sym)->output = 1;
4676 SF_SET_PROCESS (sym);
4678 ppc_frob_label (sym);
4680 demand_empty_rest_of_line ();
4683 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
4687 ppc_bc (int ignore ATTRIBUTE_UNUSED)
4693 name = demand_copy_C_string (&len);
4694 sym = symbol_make (name);
4695 S_SET_SEGMENT (sym, ppc_coff_debug_section);
4696 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4697 S_SET_STORAGE_CLASS (sym, C_BCOMM);
4698 S_SET_VALUE (sym, 0);
4699 symbol_get_tc (sym)->output = 1;
4701 ppc_frob_label (sym);
4703 demand_empty_rest_of_line ();
4706 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
4709 ppc_ec (int ignore ATTRIBUTE_UNUSED)
4713 sym = symbol_make (".ec");
4714 S_SET_SEGMENT (sym, ppc_coff_debug_section);
4715 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4716 S_SET_STORAGE_CLASS (sym, C_ECOMM);
4717 S_SET_VALUE (sym, 0);
4718 symbol_get_tc (sym)->output = 1;
4720 ppc_frob_label (sym);
4722 demand_empty_rest_of_line ();
4725 /* The .toc pseudo-op. Switch to the .toc subsegment. */
4728 ppc_toc (int ignore ATTRIBUTE_UNUSED)
4730 if (ppc_toc_csect != (symbolS *) NULL)
4731 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
4738 subseg = ppc_data_subsegment;
4739 ++ppc_data_subsegment;
4741 subseg_new (segment_name (data_section), subseg);
4742 ppc_toc_frag = frag_now;
4744 sym = symbol_find_or_make ("TOC[TC0]");
4745 symbol_set_frag (sym, frag_now);
4746 S_SET_SEGMENT (sym, data_section);
4747 S_SET_VALUE (sym, (valueT) frag_now_fix ());
4748 symbol_get_tc (sym)->subseg = subseg;
4749 symbol_get_tc (sym)->output = 1;
4750 symbol_get_tc (sym)->within = sym;
4752 ppc_toc_csect = sym;
4754 for (list = ppc_data_csects;
4755 symbol_get_tc (list)->next != (symbolS *) NULL;
4756 list = symbol_get_tc (list)->next)
4758 symbol_get_tc (list)->next = sym;
4760 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4761 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
4765 ppc_current_csect = ppc_toc_csect;
4767 demand_empty_rest_of_line ();
4770 /* The AIX assembler automatically aligns the operands of a .long or
4771 .short pseudo-op, and we want to be compatible. */
4774 ppc_xcoff_cons (int log_size)
4776 frag_align (log_size, 0, 0);
4777 record_alignment (now_seg, log_size);
4778 cons (1 << log_size);
4782 ppc_vbyte (int dummy ATTRIBUTE_UNUSED)
4787 (void) expression (&exp);
4789 if (exp.X_op != O_constant)
4791 as_bad (_("non-constant byte count"));
4795 byte_count = exp.X_add_number;
4797 if (*input_line_pointer != ',')
4799 as_bad (_("missing value"));
4803 ++input_line_pointer;
4808 ppc_xcoff_end (void)
4812 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
4814 struct dw_section *dws = &dw_sections[i];
4815 struct dw_subsection *dwss;
4817 if (dws->anon_subseg)
4819 dwss = dws->anon_subseg;
4820 dwss->link = dws->list_subseg;
4823 dwss = dws->list_subseg;
4825 for (; dwss != NULL; dwss = dwss->link)
4826 if (dwss->end_exp.X_add_symbol != NULL)
4828 subseg_set (dws->sect, dwss->subseg);
4829 symbol_set_value_now (dwss->end_exp.X_add_symbol);
4834 #endif /* OBJ_XCOFF */
4835 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
4837 /* The .tc pseudo-op. This is used when generating either XCOFF or
4838 ELF. This takes two or more arguments.
4840 When generating XCOFF output, the first argument is the name to
4841 give to this location in the toc; this will be a symbol with class
4842 TC. The rest of the arguments are N-byte values to actually put at
4843 this location in the TOC; often there is just one more argument, a
4844 relocatable symbol reference. The size of the value to store
4845 depends on target word size. A 32-bit target uses 4-byte values, a
4846 64-bit target uses 8-byte values.
4848 When not generating XCOFF output, the arguments are the same, but
4849 the first argument is simply ignored. */
4852 ppc_tc (int ignore ATTRIBUTE_UNUSED)
4856 /* Define the TOC symbol name. */
4862 if (ppc_toc_csect == (symbolS *) NULL
4863 || ppc_toc_csect != ppc_current_csect)
4865 as_bad (_(".tc not in .toc section"));
4866 ignore_rest_of_line ();
4870 endc = get_symbol_name (&name);
4872 sym = symbol_find_or_make (name);
4874 (void) restore_line_pointer (endc);
4876 if (S_IS_DEFINED (sym))
4880 label = symbol_get_tc (ppc_current_csect)->within;
4881 if (symbol_get_tc (label)->symbol_class != XMC_TC0)
4883 as_bad (_(".tc with no label"));
4884 ignore_rest_of_line ();
4888 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
4889 symbol_set_frag (label, symbol_get_frag (sym));
4890 S_SET_VALUE (label, S_GET_VALUE (sym));
4892 while (! is_end_of_line[(unsigned char) *input_line_pointer])
4893 ++input_line_pointer;
4898 S_SET_SEGMENT (sym, now_seg);
4899 symbol_set_frag (sym, frag_now);
4900 S_SET_VALUE (sym, (valueT) frag_now_fix ());
4901 symbol_get_tc (sym)->symbol_class = XMC_TC;
4902 symbol_get_tc (sym)->output = 1;
4904 ppc_frob_label (sym);
4907 #endif /* OBJ_XCOFF */
4911 /* Skip the TOC symbol name. */
4912 while (is_part_of_name (*input_line_pointer)
4913 || *input_line_pointer == ' '
4914 || *input_line_pointer == '['
4915 || *input_line_pointer == ']'
4916 || *input_line_pointer == '{'
4917 || *input_line_pointer == '}')
4918 ++input_line_pointer;
4920 /* Align to a four/eight byte boundary. */
4921 align = ppc_obj64 ? 3 : 2;
4922 frag_align (align, 0, 0);
4923 record_alignment (now_seg, align);
4924 #endif /* OBJ_ELF */
4926 if (*input_line_pointer != ',')
4927 demand_empty_rest_of_line ();
4930 ++input_line_pointer;
4931 cons (ppc_obj64 ? 8 : 4);
4935 /* Pseudo-op .machine. */
4938 ppc_machine (int ignore ATTRIBUTE_UNUSED)
4942 #define MAX_HISTORY 100
4943 static ppc_cpu_t *cpu_history;
4944 static int curr_hist;
4948 c = get_symbol_name (&cpu_string);
4949 cpu_string = xstrdup (cpu_string);
4950 (void) restore_line_pointer (c);
4952 if (cpu_string != NULL)
4954 ppc_cpu_t old_cpu = ppc_cpu;
4958 for (p = cpu_string; *p != 0; p++)
4961 if (strcmp (cpu_string, "push") == 0)
4963 if (cpu_history == NULL)
4964 cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history));
4966 if (curr_hist >= MAX_HISTORY)
4967 as_bad (_(".machine stack overflow"));
4969 cpu_history[curr_hist++] = ppc_cpu;
4971 else if (strcmp (cpu_string, "pop") == 0)
4974 as_bad (_(".machine stack underflow"));
4976 ppc_cpu = cpu_history[--curr_hist];
4978 else if ((new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, cpu_string)) != 0)
4981 as_bad (_("invalid machine `%s'"), cpu_string);
4983 if (ppc_cpu != old_cpu)
4984 ppc_setup_opcodes ();
4987 demand_empty_rest_of_line ();
4989 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
4993 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
4995 /* Set the current section. */
4997 ppc_set_current_section (segT new)
4999 ppc_previous_section = ppc_current_section;
5000 ppc_current_section = new;
5003 /* pseudo-op: .previous
5004 behaviour: toggles the current section with the previous section.
5006 warnings: "No previous section" */
5009 ppc_previous (int ignore ATTRIBUTE_UNUSED)
5011 if (ppc_previous_section == NULL)
5013 as_warn (_("no previous section to return to, ignored."));
5017 subseg_set (ppc_previous_section, 0);
5019 ppc_set_current_section (ppc_previous_section);
5022 /* pseudo-op: .pdata
5023 behaviour: predefined read only data section
5027 initial: .section .pdata "adr3"
5028 a - don't know -- maybe a misprint
5029 d - initialized data
5031 3 - double word aligned (that would be 4 byte boundary)
5034 Tag index tables (also known as the function table) for exception
5035 handling, debugging, etc. */
5038 ppc_pdata (int ignore ATTRIBUTE_UNUSED)
5040 if (pdata_section == 0)
5042 pdata_section = subseg_new (".pdata", 0);
5044 bfd_set_section_flags (stdoutput, pdata_section,
5045 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
5046 | SEC_READONLY | SEC_DATA ));
5048 bfd_set_section_alignment (stdoutput, pdata_section, 2);
5052 pdata_section = subseg_new (".pdata", 0);
5054 ppc_set_current_section (pdata_section);
5057 /* pseudo-op: .ydata
5058 behaviour: predefined read only data section
5062 initial: .section .ydata "drw3"
5063 a - don't know -- maybe a misprint
5064 d - initialized data
5066 3 - double word aligned (that would be 4 byte boundary)
5068 Tag tables (also known as the scope table) for exception handling,
5072 ppc_ydata (int ignore ATTRIBUTE_UNUSED)
5074 if (ydata_section == 0)
5076 ydata_section = subseg_new (".ydata", 0);
5077 bfd_set_section_flags (stdoutput, ydata_section,
5078 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
5079 | SEC_READONLY | SEC_DATA ));
5081 bfd_set_section_alignment (stdoutput, ydata_section, 3);
5085 ydata_section = subseg_new (".ydata", 0);
5087 ppc_set_current_section (ydata_section);
5090 /* pseudo-op: .reldata
5091 behaviour: predefined read write data section
5092 double word aligned (4-byte)
5093 FIXME: relocation is applied to it
5094 FIXME: what's the difference between this and .data?
5097 initial: .section .reldata "drw3"
5098 d - initialized data
5101 3 - double word aligned (that would be 8 byte boundary)
5104 Like .data, but intended to hold data subject to relocation, such as
5105 function descriptors, etc. */
5108 ppc_reldata (int ignore ATTRIBUTE_UNUSED)
5110 if (reldata_section == 0)
5112 reldata_section = subseg_new (".reldata", 0);
5114 bfd_set_section_flags (stdoutput, reldata_section,
5115 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
5118 bfd_set_section_alignment (stdoutput, reldata_section, 2);
5122 reldata_section = subseg_new (".reldata", 0);
5124 ppc_set_current_section (reldata_section);
5127 /* pseudo-op: .rdata
5128 behaviour: predefined read only data section
5132 initial: .section .rdata "dr3"
5133 d - initialized data
5135 3 - double word aligned (that would be 4 byte boundary) */
5138 ppc_rdata (int ignore ATTRIBUTE_UNUSED)
5140 if (rdata_section == 0)
5142 rdata_section = subseg_new (".rdata", 0);
5143 bfd_set_section_flags (stdoutput, rdata_section,
5144 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
5145 | SEC_READONLY | SEC_DATA ));
5147 bfd_set_section_alignment (stdoutput, rdata_section, 2);
5151 rdata_section = subseg_new (".rdata", 0);
5153 ppc_set_current_section (rdata_section);
5156 /* pseudo-op: .ualong
5157 behaviour: much like .int, with the exception that no alignment is
5159 FIXME: test the alignment statement
5164 ppc_ualong (int ignore ATTRIBUTE_UNUSED)
5170 /* pseudo-op: .znop <symbol name>
5171 behaviour: Issue a nop instruction
5172 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
5173 the supplied symbol name.
5175 warnings: Missing symbol name */
5178 ppc_znop (int ignore ATTRIBUTE_UNUSED)
5181 const struct powerpc_opcode *opcode;
5188 /* Strip out the symbol name. */
5189 c = get_symbol_name (&symbol_name);
5191 name = xmalloc (input_line_pointer - symbol_name + 1);
5192 strcpy (name, symbol_name);
5194 sym = symbol_find_or_make (name);
5196 *input_line_pointer = c;
5198 SKIP_WHITESPACE_AFTER_NAME ();
5200 /* Look up the opcode in the hash table. */
5201 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
5203 /* Stick in the nop. */
5204 insn = opcode->opcode;
5206 /* Write out the instruction. */
5208 md_number_to_chars (f, insn, 4);
5210 f - frag_now->fr_literal,
5215 BFD_RELOC_16_GOT_PCREL);
5225 ppc_pe_comm (int lcomm)
5234 c = get_symbol_name (&name);
5236 /* just after name is now '\0'. */
5237 p = input_line_pointer;
5239 SKIP_WHITESPACE_AFTER_NAME ();
5240 if (*input_line_pointer != ',')
5242 as_bad (_("expected comma after symbol-name: rest of line ignored."));
5243 ignore_rest_of_line ();
5247 input_line_pointer++; /* skip ',' */
5248 if ((temp = get_absolute_expression ()) < 0)
5250 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
5251 ignore_rest_of_line ();
5257 /* The third argument to .comm is the alignment. */
5258 if (*input_line_pointer != ',')
5262 ++input_line_pointer;
5263 align = get_absolute_expression ();
5266 as_warn (_("ignoring bad alignment"));
5273 symbolP = symbol_find_or_make (name);
5276 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
5278 as_bad (_("ignoring attempt to re-define symbol `%s'."),
5279 S_GET_NAME (symbolP));
5280 ignore_rest_of_line ();
5284 if (S_GET_VALUE (symbolP))
5286 if (S_GET_VALUE (symbolP) != (valueT) temp)
5287 as_bad (_("length of .comm \"%s\" is already %ld. Not changed to %ld."),
5288 S_GET_NAME (symbolP),
5289 (long) S_GET_VALUE (symbolP),
5294 S_SET_VALUE (symbolP, (valueT) temp);
5295 S_SET_EXTERNAL (symbolP);
5296 S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
5299 demand_empty_rest_of_line ();
5303 * implement the .section pseudo op:
5304 * .section name {, "flags"}
5306 * | +--- optional flags: 'b' for bss
5308 * +-- section name 'l' for lib
5312 * 'd' (apparently m88k for data)
5314 * But if the argument is not a quoted string, treat it as a
5315 * subsegment number.
5317 * FIXME: this is a copy of the section processing from obj-coff.c, with
5318 * additions/changes for the moto-pas assembler support. There are three
5321 * FIXME: I just noticed this. This doesn't work at all really. It it
5322 * setting bits that bfd probably neither understands or uses. The
5323 * correct approach (?) will have to incorporate extra fields attached
5324 * to the section to hold the system specific stuff. (krk)
5327 * 'a' - unknown - referred to in documentation, but no definition supplied
5328 * 'c' - section has code
5329 * 'd' - section has initialized data
5330 * 'u' - section has uninitialized data
5331 * 'i' - section contains directives (info)
5332 * 'n' - section can be discarded
5333 * 'R' - remove section at link time
5335 * Section Protection:
5336 * 'r' - section is readable
5337 * 'w' - section is writeable
5338 * 'x' - section is executable
5339 * 's' - section is sharable
5341 * Section Alignment:
5342 * '0' - align to byte boundary
5343 * '1' - align to halfword undary
5344 * '2' - align to word boundary
5345 * '3' - align to doubleword boundary
5346 * '4' - align to quadword boundary
5347 * '5' - align to 32 byte boundary
5348 * '6' - align to 64 byte boundary
5353 ppc_pe_section (int ignore ATTRIBUTE_UNUSED)
5355 /* Strip out the section name. */
5364 c = get_symbol_name (§ion_name);
5366 name = xmalloc (input_line_pointer - section_name + 1);
5367 strcpy (name, section_name);
5369 *input_line_pointer = c;
5371 SKIP_WHITESPACE_AFTER_NAME ();
5374 flags = SEC_NO_FLAGS;
5376 if (strcmp (name, ".idata$2") == 0)
5380 else if (strcmp (name, ".idata$3") == 0)
5384 else if (strcmp (name, ".idata$4") == 0)
5388 else if (strcmp (name, ".idata$5") == 0)
5392 else if (strcmp (name, ".idata$6") == 0)
5397 /* Default alignment to 16 byte boundary. */
5400 if (*input_line_pointer == ',')
5402 ++input_line_pointer;
5404 if (*input_line_pointer != '"')
5405 exp = get_absolute_expression ();
5408 ++input_line_pointer;
5409 while (*input_line_pointer != '"'
5410 && ! is_end_of_line[(unsigned char) *input_line_pointer])
5412 switch (*input_line_pointer)
5414 /* Section Contents */
5415 case 'a': /* unknown */
5416 as_bad (_("unsupported section attribute -- 'a'"));
5418 case 'c': /* code section */
5421 case 'd': /* section has initialized data */
5424 case 'u': /* section has uninitialized data */
5425 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
5429 case 'i': /* section contains directives (info) */
5430 /* FIXME: This is IMAGE_SCN_LNK_INFO
5432 flags |= SEC_HAS_CONTENTS;
5434 case 'n': /* section can be discarded */
5437 case 'R': /* Remove section at link time */
5438 flags |= SEC_NEVER_LOAD;
5440 #if IFLICT_BRAIN_DAMAGE
5441 /* Section Protection */
5442 case 'r': /* section is readable */
5443 flags |= IMAGE_SCN_MEM_READ;
5445 case 'w': /* section is writeable */
5446 flags |= IMAGE_SCN_MEM_WRITE;
5448 case 'x': /* section is executable */
5449 flags |= IMAGE_SCN_MEM_EXECUTE;
5451 case 's': /* section is sharable */
5452 flags |= IMAGE_SCN_MEM_SHARED;
5455 /* Section Alignment */
5456 case '0': /* align to byte boundary */
5457 flags |= IMAGE_SCN_ALIGN_1BYTES;
5460 case '1': /* align to halfword boundary */
5461 flags |= IMAGE_SCN_ALIGN_2BYTES;
5464 case '2': /* align to word boundary */
5465 flags |= IMAGE_SCN_ALIGN_4BYTES;
5468 case '3': /* align to doubleword boundary */
5469 flags |= IMAGE_SCN_ALIGN_8BYTES;
5472 case '4': /* align to quadword boundary */
5473 flags |= IMAGE_SCN_ALIGN_16BYTES;
5476 case '5': /* align to 32 byte boundary */
5477 flags |= IMAGE_SCN_ALIGN_32BYTES;
5480 case '6': /* align to 64 byte boundary */
5481 flags |= IMAGE_SCN_ALIGN_64BYTES;
5486 as_bad (_("unknown section attribute '%c'"),
5487 *input_line_pointer);
5490 ++input_line_pointer;
5492 if (*input_line_pointer == '"')
5493 ++input_line_pointer;
5497 sec = subseg_new (name, (subsegT) exp);
5499 ppc_set_current_section (sec);
5501 if (flags != SEC_NO_FLAGS)
5503 if (! bfd_set_section_flags (stdoutput, sec, flags))
5504 as_bad (_("error setting flags for \"%s\": %s"),
5505 bfd_section_name (stdoutput, sec),
5506 bfd_errmsg (bfd_get_error ()));
5509 bfd_set_section_alignment (stdoutput, sec, align);
5513 ppc_pe_function (int ignore ATTRIBUTE_UNUSED)
5519 endc = get_symbol_name (&name);
5521 ext_sym = symbol_find_or_make (name);
5523 (void) restore_line_pointer (endc);
5525 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
5526 SF_SET_FUNCTION (ext_sym);
5527 SF_SET_PROCESS (ext_sym);
5528 coff_add_linesym (ext_sym);
5530 demand_empty_rest_of_line ();
5534 ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED)
5536 if (tocdata_section == 0)
5538 tocdata_section = subseg_new (".tocd", 0);
5539 /* FIXME: section flags won't work. */
5540 bfd_set_section_flags (stdoutput, tocdata_section,
5541 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
5542 | SEC_READONLY | SEC_DATA));
5544 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
5548 rdata_section = subseg_new (".tocd", 0);
5551 ppc_set_current_section (tocdata_section);
5553 demand_empty_rest_of_line ();
5556 /* Don't adjust TOC relocs to use the section symbol. */
5559 ppc_pe_fix_adjustable (fixS *fix)
5561 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
5568 /* XCOFF specific symbol and file handling. */
5570 /* Canonicalize the symbol name. We use the to force the suffix, if
5571 any, to use square brackets, and to be in upper case. */
5574 ppc_canonicalize_symbol_name (char *name)
5578 if (ppc_stab_symbol)
5581 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
5595 for (s++; *s != '\0' && *s != brac; s++)
5598 if (*s == '\0' || s[1] != '\0')
5599 as_bad (_("bad symbol suffix"));
5607 /* Set the class of a symbol based on the suffix, if any. This is
5608 called whenever a new symbol is created. */
5611 ppc_symbol_new_hook (symbolS *sym)
5613 struct ppc_tc_sy *tc;
5616 tc = symbol_get_tc (sym);
5619 tc->symbol_class = -1;
5620 tc->real_name = NULL;
5627 if (ppc_stab_symbol)
5630 s = strchr (S_GET_NAME (sym), '[');
5631 if (s == (const char *) NULL)
5633 /* There is no suffix. */
5642 if (strcmp (s, "BS]") == 0)
5643 tc->symbol_class = XMC_BS;
5646 if (strcmp (s, "DB]") == 0)
5647 tc->symbol_class = XMC_DB;
5648 else if (strcmp (s, "DS]") == 0)
5649 tc->symbol_class = XMC_DS;
5652 if (strcmp (s, "GL]") == 0)
5653 tc->symbol_class = XMC_GL;
5656 if (strcmp (s, "PR]") == 0)
5657 tc->symbol_class = XMC_PR;
5660 if (strcmp (s, "RO]") == 0)
5661 tc->symbol_class = XMC_RO;
5662 else if (strcmp (s, "RW]") == 0)
5663 tc->symbol_class = XMC_RW;
5666 if (strcmp (s, "SV]") == 0)
5667 tc->symbol_class = XMC_SV;
5670 if (strcmp (s, "TC]") == 0)
5671 tc->symbol_class = XMC_TC;
5672 else if (strcmp (s, "TI]") == 0)
5673 tc->symbol_class = XMC_TI;
5674 else if (strcmp (s, "TB]") == 0)
5675 tc->symbol_class = XMC_TB;
5676 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
5677 tc->symbol_class = XMC_TC0;
5680 if (strcmp (s, "UA]") == 0)
5681 tc->symbol_class = XMC_UA;
5682 else if (strcmp (s, "UC]") == 0)
5683 tc->symbol_class = XMC_UC;
5686 if (strcmp (s, "XO]") == 0)
5687 tc->symbol_class = XMC_XO;
5691 if (tc->symbol_class == -1)
5692 as_bad (_("unrecognized symbol suffix"));
5695 /* Set the class of a label based on where it is defined. This
5696 handles symbols without suffixes. Also, move the symbol so that it
5697 follows the csect symbol. */
5700 ppc_frob_label (symbolS *sym)
5702 if (ppc_current_csect != (symbolS *) NULL)
5704 if (symbol_get_tc (sym)->symbol_class == -1)
5705 symbol_get_tc (sym)->symbol_class = symbol_get_tc (ppc_current_csect)->symbol_class;
5707 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
5708 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
5709 &symbol_rootP, &symbol_lastP);
5710 symbol_get_tc (ppc_current_csect)->within = sym;
5711 symbol_get_tc (sym)->within = ppc_current_csect;
5715 dwarf2_emit_label (sym);
5719 /* This variable is set by ppc_frob_symbol if any absolute symbols are
5720 seen. It tells ppc_adjust_symtab whether it needs to look through
5723 static bfd_boolean ppc_saw_abs;
5725 /* Change the name of a symbol just before writing it out. Set the
5726 real name if the .rename pseudo-op was used. Otherwise, remove any
5727 class suffix. Return 1 if the symbol should not be included in the
5731 ppc_frob_symbol (symbolS *sym)
5733 static symbolS *ppc_last_function;
5734 static symbolS *set_end;
5736 /* Discard symbols that should not be included in the output symbol
5738 if (! symbol_used_in_reloc_p (sym)
5739 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
5740 || (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
5741 && ! symbol_get_tc (sym)->output
5742 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
5745 /* This one will disappear anyway. Don't make a csect sym for it. */
5746 if (sym == abs_section_sym)
5749 if (symbol_get_tc (sym)->real_name != (char *) NULL)
5750 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
5756 name = S_GET_NAME (sym);
5757 s = strchr (name, '[');
5758 if (s != (char *) NULL)
5764 snew = xmalloc (len + 1);
5765 memcpy (snew, name, len);
5768 S_SET_NAME (sym, snew);
5772 if (set_end != (symbolS *) NULL)
5774 SA_SET_SYM_ENDNDX (set_end, sym);
5778 if (SF_GET_FUNCTION (sym))
5780 if (ppc_last_function != (symbolS *) NULL)
5781 as_bad (_("two .function pseudo-ops with no intervening .ef"));
5782 ppc_last_function = sym;
5783 if (symbol_get_tc (sym)->u.size != (symbolS *) NULL)
5785 resolve_symbol_value (symbol_get_tc (sym)->u.size);
5786 SA_SET_SYM_FSIZE (sym,
5787 (long) S_GET_VALUE (symbol_get_tc (sym)->u.size));
5790 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
5791 && strcmp (S_GET_NAME (sym), ".ef") == 0)
5793 if (ppc_last_function == (symbolS *) NULL)
5794 as_bad (_(".ef with no preceding .function"));
5797 set_end = ppc_last_function;
5798 ppc_last_function = NULL;
5800 /* We don't have a C_EFCN symbol, but we need to force the
5801 COFF backend to believe that it has seen one. */
5802 coff_last_function = NULL;
5806 if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
5807 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
5808 && S_GET_STORAGE_CLASS (sym) != C_FILE
5809 && S_GET_STORAGE_CLASS (sym) != C_FCN
5810 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
5811 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
5812 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
5813 && S_GET_STORAGE_CLASS (sym) != C_BINCL
5814 && S_GET_STORAGE_CLASS (sym) != C_EINCL
5815 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
5816 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
5818 if (S_GET_STORAGE_CLASS (sym) == C_EXT
5819 || S_GET_STORAGE_CLASS (sym) == C_AIX_WEAKEXT
5820 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
5823 union internal_auxent *a;
5825 /* Create a csect aux. */
5826 i = S_GET_NUMBER_AUXILIARY (sym);
5827 S_SET_NUMBER_AUXILIARY (sym, i + 1);
5828 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
5829 if (symbol_get_tc (sym)->symbol_class == XMC_TC0)
5831 /* This is the TOC table. */
5832 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
5833 a->x_csect.x_scnlen.l = 0;
5834 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
5836 else if (symbol_get_tc (sym)->subseg != 0)
5838 /* This is a csect symbol. x_scnlen is the size of the
5840 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
5841 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
5842 S_GET_SEGMENT (sym))
5843 - S_GET_VALUE (sym));
5846 resolve_symbol_value (symbol_get_tc (sym)->next);
5847 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
5848 - S_GET_VALUE (sym));
5850 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
5852 else if (S_GET_SEGMENT (sym) == bss_section)
5854 /* This is a common symbol. */
5855 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
5856 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
5857 if (S_IS_EXTERNAL (sym))
5858 symbol_get_tc (sym)->symbol_class = XMC_RW;
5860 symbol_get_tc (sym)->symbol_class = XMC_BS;
5862 else if (S_GET_SEGMENT (sym) == absolute_section)
5864 /* This is an absolute symbol. The csect will be created by
5865 ppc_adjust_symtab. */
5867 a->x_csect.x_smtyp = XTY_LD;
5868 if (symbol_get_tc (sym)->symbol_class == -1)
5869 symbol_get_tc (sym)->symbol_class = XMC_XO;
5871 else if (! S_IS_DEFINED (sym))
5873 /* This is an external symbol. */
5874 a->x_csect.x_scnlen.l = 0;
5875 a->x_csect.x_smtyp = XTY_ER;
5877 else if (symbol_get_tc (sym)->symbol_class == XMC_TC)
5881 /* This is a TOC definition. x_scnlen is the size of the
5883 next = symbol_next (sym);
5884 while (symbol_get_tc (next)->symbol_class == XMC_TC0)
5885 next = symbol_next (next);
5886 if (next == (symbolS *) NULL
5887 || symbol_get_tc (next)->symbol_class != XMC_TC)
5889 if (ppc_after_toc_frag == (fragS *) NULL)
5890 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
5892 - S_GET_VALUE (sym));
5894 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
5895 - S_GET_VALUE (sym));
5899 resolve_symbol_value (next);
5900 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
5901 - S_GET_VALUE (sym));
5903 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
5909 /* This is a normal symbol definition. x_scnlen is the
5910 symbol index of the containing csect. */
5911 if (S_GET_SEGMENT (sym) == text_section)
5912 csect = ppc_text_csects;
5913 else if (S_GET_SEGMENT (sym) == data_section)
5914 csect = ppc_data_csects;
5918 /* Skip the initial dummy symbol. */
5919 csect = symbol_get_tc (csect)->next;
5921 if (csect == (symbolS *) NULL)
5923 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
5924 a->x_csect.x_scnlen.l = 0;
5928 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
5930 resolve_symbol_value (symbol_get_tc (csect)->next);
5931 if (S_GET_VALUE (symbol_get_tc (csect)->next)
5932 > S_GET_VALUE (sym))
5934 csect = symbol_get_tc (csect)->next;
5937 a->x_csect.x_scnlen.p =
5938 coffsymbol (symbol_get_bfdsym (csect))->native;
5939 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
5942 a->x_csect.x_smtyp = XTY_LD;
5945 a->x_csect.x_parmhash = 0;
5946 a->x_csect.x_snhash = 0;
5947 if (symbol_get_tc (sym)->symbol_class == -1)
5948 a->x_csect.x_smclas = XMC_PR;
5950 a->x_csect.x_smclas = symbol_get_tc (sym)->symbol_class;
5951 a->x_csect.x_stab = 0;
5952 a->x_csect.x_snstab = 0;
5954 /* Don't let the COFF backend resort these symbols. */
5955 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
5957 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
5959 /* We want the value to be the symbol index of the referenced
5960 csect symbol. BFD will do that for us if we set the right
5962 asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within);
5963 combined_entry_type *c = coffsymbol (bsym)->native;
5965 S_SET_VALUE (sym, (valueT) (size_t) c);
5966 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
5968 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
5973 block = symbol_get_tc (sym)->within;
5976 /* The value is the offset from the enclosing csect. */
5979 csect = symbol_get_tc (block)->within;
5980 resolve_symbol_value (csect);
5981 base = S_GET_VALUE (csect);
5986 S_SET_VALUE (sym, S_GET_VALUE (sym) - base);
5988 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
5989 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
5991 /* We want the value to be a file offset into the line numbers.
5992 BFD will do that for us if we set the right flags. We have
5993 already set the value correctly. */
5994 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
6000 /* Adjust the symbol table. This creates csect symbols for all
6001 absolute symbols. */
6004 ppc_adjust_symtab (void)
6011 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
6015 union internal_auxent *a;
6017 if (S_GET_SEGMENT (sym) != absolute_section)
6020 csect = symbol_create (".abs[XO]", absolute_section,
6021 S_GET_VALUE (sym), &zero_address_frag);
6022 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
6023 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
6024 i = S_GET_NUMBER_AUXILIARY (csect);
6025 S_SET_NUMBER_AUXILIARY (csect, i + 1);
6026 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
6027 a->x_csect.x_scnlen.l = 0;
6028 a->x_csect.x_smtyp = XTY_SD;
6029 a->x_csect.x_parmhash = 0;
6030 a->x_csect.x_snhash = 0;
6031 a->x_csect.x_smclas = XMC_XO;
6032 a->x_csect.x_stab = 0;
6033 a->x_csect.x_snstab = 0;
6035 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
6037 i = S_GET_NUMBER_AUXILIARY (sym);
6038 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
6039 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
6040 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
6043 ppc_saw_abs = FALSE;
6046 /* Set the VMA for a section. This is called on all the sections in
6050 ppc_frob_section (asection *sec)
6052 static bfd_vma vma = 0;
6054 /* Dwarf sections start at 0. */
6055 if (bfd_get_section_flags (NULL, sec) & SEC_DEBUGGING)
6058 vma = md_section_align (sec, vma);
6059 bfd_set_section_vma (stdoutput, sec, vma);
6060 vma += bfd_section_size (stdoutput, sec);
6063 #endif /* OBJ_XCOFF */
6066 md_atof (int type, char *litp, int *sizep)
6068 return ieee_md_atof (type, litp, sizep, target_big_endian);
6071 /* Write a value out to the object file, using the appropriate
6075 md_number_to_chars (char *buf, valueT val, int n)
6077 if (target_big_endian)
6078 number_to_chars_bigendian (buf, val, n);
6080 number_to_chars_littleendian (buf, val, n);
6083 /* Align a section (I don't know why this is machine dependent). */
6086 md_section_align (asection *seg ATTRIBUTE_UNUSED, valueT addr)
6091 int align = bfd_get_section_alignment (stdoutput, seg);
6093 return ((addr + (1 << align) - 1) & (-1 << align));
6097 /* We don't have any form of relaxing. */
6100 md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED,
6101 asection *seg ATTRIBUTE_UNUSED)
6107 /* Convert a machine dependent frag. We never generate these. */
6110 md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
6111 asection *sec ATTRIBUTE_UNUSED,
6112 fragS *fragp ATTRIBUTE_UNUSED)
6117 /* We have no need to default values of symbols. */
6120 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
6125 /* Functions concerning relocs. */
6127 /* The location from which a PC relative jump should be calculated,
6128 given a PC relative reloc. */
6131 md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED)
6133 return fixp->fx_frag->fr_address + fixp->fx_where;
6138 /* This is called to see whether a fixup should be adjusted to use a
6139 section symbol. We take the opportunity to change a fixup against
6140 a symbol in the TOC subsegment into a reloc against the
6141 corresponding .tc symbol. */
6144 ppc_fix_adjustable (fixS *fix)
6146 valueT val = resolve_symbol_value (fix->fx_addsy);
6147 segT symseg = S_GET_SEGMENT (fix->fx_addsy);
6148 TC_SYMFIELD_TYPE *tc;
6150 if (symseg == absolute_section)
6153 /* Always adjust symbols in debugging sections. */
6154 if (bfd_get_section_flags (stdoutput, symseg) & SEC_DEBUGGING)
6157 if (ppc_toc_csect != (symbolS *) NULL
6158 && fix->fx_addsy != ppc_toc_csect
6159 && symseg == data_section
6160 && val >= ppc_toc_frag->fr_address
6161 && (ppc_after_toc_frag == (fragS *) NULL
6162 || val < ppc_after_toc_frag->fr_address))
6166 for (sy = symbol_next (ppc_toc_csect);
6167 sy != (symbolS *) NULL;
6168 sy = symbol_next (sy))
6170 TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy);
6172 if (sy_tc->symbol_class == XMC_TC0)
6174 if (sy_tc->symbol_class != XMC_TC)
6176 if (val == resolve_symbol_value (sy))
6179 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
6184 as_bad_where (fix->fx_file, fix->fx_line,
6185 _("symbol in .toc does not match any .tc"));
6188 /* Possibly adjust the reloc to be against the csect. */
6189 tc = symbol_get_tc (fix->fx_addsy);
6191 && tc->symbol_class != XMC_TC0
6192 && tc->symbol_class != XMC_TC
6193 && symseg != bss_section
6194 /* Don't adjust if this is a reloc in the toc section. */
6195 && (symseg != data_section
6196 || ppc_toc_csect == NULL
6197 || val < ppc_toc_frag->fr_address
6198 || (ppc_after_toc_frag != NULL
6199 && val >= ppc_after_toc_frag->fr_address)))
6201 symbolS *csect = tc->within;
6203 /* If the symbol was not declared by a label (eg: a section symbol),
6204 use the section instead of the csect. This doesn't happen in
6205 normal AIX assembly code. */
6207 csect = seg_info (symseg)->sym;
6209 fix->fx_offset += val - symbol_get_frag (csect)->fr_address;
6210 fix->fx_addsy = csect;
6215 /* Adjust a reloc against a .lcomm symbol to be against the base
6217 if (symseg == bss_section
6218 && ! S_IS_EXTERNAL (fix->fx_addsy))
6220 symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
6222 fix->fx_offset += val - resolve_symbol_value (sy);
6229 /* A reloc from one csect to another must be kept. The assembler
6230 will, of course, keep relocs between sections, and it will keep
6231 absolute relocs, but we need to force it to keep PC relative relocs
6232 between two csects in the same section. */
6235 ppc_force_relocation (fixS *fix)
6237 /* At this point fix->fx_addsy should already have been converted to
6238 a csect symbol. If the csect does not include the fragment, then
6239 we need to force the relocation. */
6241 && fix->fx_addsy != NULL
6242 && symbol_get_tc (fix->fx_addsy)->subseg != 0
6243 && ((symbol_get_frag (fix->fx_addsy)->fr_address
6244 > fix->fx_frag->fr_address)
6245 || (symbol_get_tc (fix->fx_addsy)->next != NULL
6246 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
6247 <= fix->fx_frag->fr_address))))
6250 return generic_force_reloc (fix);
6254 ppc_new_dot_label (symbolS *sym)
6256 /* Anchor this label to the current csect for relocations. */
6257 symbol_get_tc (sym)->within = ppc_current_csect;
6260 #endif /* OBJ_XCOFF */
6263 /* If this function returns non-zero, it guarantees that a relocation
6264 will be emitted for a fixup. */
6267 ppc_force_relocation (fixS *fix)
6269 /* Branch prediction relocations must force a relocation, as must
6270 the vtable description relocs. */
6271 switch (fix->fx_r_type)
6273 case BFD_RELOC_PPC_B16_BRTAKEN:
6274 case BFD_RELOC_PPC_B16_BRNTAKEN:
6275 case BFD_RELOC_PPC_BA16_BRTAKEN:
6276 case BFD_RELOC_PPC_BA16_BRNTAKEN:
6277 case BFD_RELOC_24_PLT_PCREL:
6278 case BFD_RELOC_PPC64_TOC:
6280 case BFD_RELOC_PPC_B26:
6281 case BFD_RELOC_PPC_BA26:
6282 case BFD_RELOC_PPC_B16:
6283 case BFD_RELOC_PPC_BA16:
6284 /* All branch fixups targeting a localentry symbol must
6285 force a relocation. */
6288 asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy);
6289 elf_symbol_type *elfsym
6290 = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym);
6291 gas_assert (elfsym);
6292 if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0)
6300 if (fix->fx_r_type >= BFD_RELOC_PPC_TLS
6301 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
6304 return generic_force_reloc (fix);
6308 ppc_fix_adjustable (fixS *fix)
6310 switch (fix->fx_r_type)
6312 /* All branch fixups targeting a localentry symbol must
6313 continue using the symbol. */
6314 case BFD_RELOC_PPC_B26:
6315 case BFD_RELOC_PPC_BA26:
6316 case BFD_RELOC_PPC_B16:
6317 case BFD_RELOC_PPC_BA16:
6318 case BFD_RELOC_PPC_B16_BRTAKEN:
6319 case BFD_RELOC_PPC_B16_BRNTAKEN:
6320 case BFD_RELOC_PPC_BA16_BRTAKEN:
6321 case BFD_RELOC_PPC_BA16_BRNTAKEN:
6324 asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy);
6325 elf_symbol_type *elfsym
6326 = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym);
6327 gas_assert (elfsym);
6328 if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0)
6336 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
6337 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
6338 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
6339 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
6340 && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_DS
6341 && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_LO_DS
6342 && fix->fx_r_type != BFD_RELOC_GPREL16
6343 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
6344 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
6345 && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS
6346 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA));
6351 ppc_frag_check (struct frag *fragP)
6353 if (!fragP->has_code)
6356 if (ppc_mach() == bfd_mach_ppc_vle)
6358 if (((fragP->fr_address + fragP->insn_addr) & 1) != 0)
6359 as_bad (_("instruction address is not a multiple of 2"));
6363 if (((fragP->fr_address + fragP->insn_addr) & 3) != 0)
6364 as_bad (_("instruction address is not a multiple of 4"));
6368 /* Implement HANDLE_ALIGN. This writes the NOP pattern into an
6369 rs_align_code frag. */
6372 ppc_handle_align (struct frag *fragP)
6374 valueT count = (fragP->fr_next->fr_address
6375 - (fragP->fr_address + fragP->fr_fix));
6377 if (ppc_mach() == bfd_mach_ppc_vle && count != 0 && (count & 1) == 0)
6379 char *dest = fragP->fr_literal + fragP->fr_fix;
6382 md_number_to_chars (dest, 0x4400, 2);
6384 else if (count != 0 && (count & 3) == 0)
6386 char *dest = fragP->fr_literal + fragP->fr_fix;
6390 if (count > 4 * nop_limit && count < 0x2000000)
6394 /* Make a branch, then follow with nops. Insert another
6395 frag to handle the nops. */
6396 md_number_to_chars (dest, 0x48000000 + count, 4);
6401 rest = xmalloc (SIZEOF_STRUCT_FRAG + 4);
6402 memcpy (rest, fragP, SIZEOF_STRUCT_FRAG);
6403 fragP->fr_next = rest;
6405 rest->fr_address += rest->fr_fix + 4;
6407 /* If we leave the next frag as rs_align_code we'll come here
6408 again, resulting in a bunch of branches rather than a
6409 branch followed by nops. */
6410 rest->fr_type = rs_align;
6411 dest = rest->fr_literal;
6414 md_number_to_chars (dest, 0x60000000, 4);
6416 if ((ppc_cpu & PPC_OPCODE_POWER6) != 0
6417 || (ppc_cpu & PPC_OPCODE_POWER7) != 0
6418 || (ppc_cpu & PPC_OPCODE_POWER8) != 0)
6420 /* For power6, power7 and power8, we want the last nop to be a group
6421 terminating one. Do this by inserting an rs_fill frag immediately
6422 after this one, with its address set to the last nop location.
6423 This will automatically reduce the number of nops in the current
6427 struct frag *group_nop = xmalloc (SIZEOF_STRUCT_FRAG + 4);
6429 memcpy (group_nop, fragP, SIZEOF_STRUCT_FRAG);
6430 group_nop->fr_address = group_nop->fr_next->fr_address - 4;
6431 group_nop->fr_fix = 0;
6432 group_nop->fr_offset = 1;
6433 group_nop->fr_type = rs_fill;
6434 fragP->fr_next = group_nop;
6435 dest = group_nop->fr_literal;
6438 if ((ppc_cpu & PPC_OPCODE_POWER7) != 0
6439 || (ppc_cpu & PPC_OPCODE_POWER8) != 0)
6441 if (ppc_cpu & PPC_OPCODE_E500MC)
6442 /* e500mc group terminating nop: "ori 0,0,0". */
6443 md_number_to_chars (dest, 0x60000000, 4);
6445 /* power7/power8 group terminating nop: "ori 2,2,0". */
6446 md_number_to_chars (dest, 0x60420000, 4);
6449 /* power6 group terminating nop: "ori 1,1,0". */
6450 md_number_to_chars (dest, 0x60210000, 4);
6455 /* Apply a fixup to the object code. This is called for all the
6456 fixups we generated by the calls to fix_new_exp, above. */
6459 md_apply_fix (fixS *fixP, valueT *valP, segT seg)
6461 valueT value = * valP;
6463 const struct powerpc_operand *operand;
6466 if (fixP->fx_addsy != NULL)
6468 /* Hack around bfd_install_relocation brain damage. */
6470 value += fixP->fx_frag->fr_address + fixP->fx_where;
6475 /* FIXME FIXME FIXME: The value we are passed in *valP includes
6476 the symbol values. If we are doing this relocation the code in
6477 write.c is going to call bfd_install_relocation, which is also
6478 going to use the symbol value. That means that if the reloc is
6479 fully resolved we want to use *valP since bfd_install_relocation is
6481 However, if the reloc is not fully resolved we do not want to
6482 use *valP, and must use fx_offset instead. If the relocation
6483 is PC-relative, we then need to re-apply md_pcrel_from_section
6484 to this new relocation value. */
6485 if (fixP->fx_addsy == (symbolS *) NULL)
6490 value = fixP->fx_offset;
6492 value -= md_pcrel_from_section (fixP, seg);
6496 if (fixP->fx_subsy != (symbolS *) NULL)
6498 /* We can't actually support subtracting a symbol. */
6499 as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
6503 if (fixP->fx_pcrel_adjust != 0)
6505 /* This is a fixup on an instruction. */
6506 int opindex = fixP->fx_pcrel_adjust & 0xff;
6508 operand = &powerpc_operands[opindex];
6510 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
6511 does not generate a reloc. It uses the offset of `sym' within its
6512 csect. Other usages, such as `.long sym', generate relocs. This
6513 is the documented behaviour of non-TOC symbols. */
6514 if ((operand->flags & PPC_OPERAND_PARENS) != 0
6515 && (operand->bitm & 0xfff0) == 0xfff0
6516 && operand->shift == 0
6517 && (operand->insert == NULL || ppc_obj64)
6518 && fixP->fx_addsy != NULL
6519 && symbol_get_tc (fixP->fx_addsy)->subseg != 0
6520 && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC
6521 && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC0
6522 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
6524 value = fixP->fx_offset;
6528 /* During parsing of instructions, a TOC16 reloc is generated for
6529 instructions such as 'lwz RT,SYM(RB)' if SYM is a symbol defined
6530 in the toc. But at parse time, SYM may be not yet defined, so
6531 check again here. */
6532 if (fixP->fx_r_type == BFD_RELOC_16
6533 && fixP->fx_addsy != NULL
6534 && ppc_is_toc_sym (fixP->fx_addsy))
6535 fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
6539 /* Calculate value to be stored in field. */
6541 switch (fixP->fx_r_type)
6544 case BFD_RELOC_PPC64_ADDR16_LO_DS:
6545 case BFD_RELOC_PPC_VLE_LO16A:
6546 case BFD_RELOC_PPC_VLE_LO16D:
6548 case BFD_RELOC_LO16:
6549 case BFD_RELOC_LO16_PCREL:
6550 fieldval = value & 0xffff;
6552 if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
6553 fieldval = SEX16 (fieldval);
6554 fixP->fx_no_overflow = 1;
6557 case BFD_RELOC_HI16:
6558 case BFD_RELOC_HI16_PCREL:
6560 if (REPORT_OVERFLOW_HI && ppc_obj64)
6562 fieldval = value >> 16;
6563 if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
6565 valueT sign = (((valueT) -1 >> 16) + 1) >> 1;
6566 fieldval = ((valueT) fieldval ^ sign) - sign;
6572 case BFD_RELOC_PPC_VLE_HI16A:
6573 case BFD_RELOC_PPC_VLE_HI16D:
6574 case BFD_RELOC_PPC64_ADDR16_HIGH:
6576 fieldval = PPC_HI (value);
6577 goto sign_extend_16;
6579 case BFD_RELOC_HI16_S:
6580 case BFD_RELOC_HI16_S_PCREL:
6582 if (REPORT_OVERFLOW_HI && ppc_obj64)
6584 fieldval = (value + 0x8000) >> 16;
6585 if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
6587 valueT sign = (((valueT) -1 >> 16) + 1) >> 1;
6588 fieldval = ((valueT) fieldval ^ sign) - sign;
6594 case BFD_RELOC_PPC_VLE_HA16A:
6595 case BFD_RELOC_PPC_VLE_HA16D:
6596 case BFD_RELOC_PPC64_ADDR16_HIGHA:
6598 fieldval = PPC_HA (value);
6599 goto sign_extend_16;
6602 case BFD_RELOC_PPC64_HIGHER:
6603 fieldval = PPC_HIGHER (value);
6604 goto sign_extend_16;
6606 case BFD_RELOC_PPC64_HIGHER_S:
6607 fieldval = PPC_HIGHERA (value);
6608 goto sign_extend_16;
6610 case BFD_RELOC_PPC64_HIGHEST:
6611 fieldval = PPC_HIGHEST (value);
6612 goto sign_extend_16;
6614 case BFD_RELOC_PPC64_HIGHEST_S:
6615 fieldval = PPC_HIGHESTA (value);
6616 goto sign_extend_16;
6623 if (operand != NULL)
6625 /* Handle relocs in an insn. */
6629 switch (fixP->fx_r_type)
6632 /* The following relocs can't be calculated by the assembler.
6633 Leave the field zero. */
6634 case BFD_RELOC_PPC_TPREL16:
6635 case BFD_RELOC_PPC_TPREL16_LO:
6636 case BFD_RELOC_PPC_TPREL16_HI:
6637 case BFD_RELOC_PPC_TPREL16_HA:
6638 case BFD_RELOC_PPC_DTPREL16:
6639 case BFD_RELOC_PPC_DTPREL16_LO:
6640 case BFD_RELOC_PPC_DTPREL16_HI:
6641 case BFD_RELOC_PPC_DTPREL16_HA:
6642 case BFD_RELOC_PPC_GOT_TLSGD16:
6643 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
6644 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
6645 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
6646 case BFD_RELOC_PPC_GOT_TLSLD16:
6647 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
6648 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
6649 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
6650 case BFD_RELOC_PPC_GOT_TPREL16:
6651 case BFD_RELOC_PPC_GOT_TPREL16_LO:
6652 case BFD_RELOC_PPC_GOT_TPREL16_HI:
6653 case BFD_RELOC_PPC_GOT_TPREL16_HA:
6654 case BFD_RELOC_PPC_GOT_DTPREL16:
6655 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
6656 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
6657 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
6658 case BFD_RELOC_PPC64_TPREL16_DS:
6659 case BFD_RELOC_PPC64_TPREL16_LO_DS:
6660 case BFD_RELOC_PPC64_TPREL16_HIGH:
6661 case BFD_RELOC_PPC64_TPREL16_HIGHA:
6662 case BFD_RELOC_PPC64_TPREL16_HIGHER:
6663 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
6664 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
6665 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
6666 case BFD_RELOC_PPC64_DTPREL16_HIGH:
6667 case BFD_RELOC_PPC64_DTPREL16_HIGHA:
6668 case BFD_RELOC_PPC64_DTPREL16_DS:
6669 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
6670 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
6671 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
6672 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
6673 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
6674 gas_assert (fixP->fx_addsy != NULL);
6675 S_SET_THREAD_LOCAL (fixP->fx_addsy);
6679 /* These also should leave the field zero for the same
6680 reason. Note that older versions of gas wrote values
6681 here. If we want to go back to the old behaviour, then
6682 all _LO and _LO_DS cases will need to be treated like
6683 BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */
6684 case BFD_RELOC_16_GOTOFF:
6685 case BFD_RELOC_LO16_GOTOFF:
6686 case BFD_RELOC_HI16_GOTOFF:
6687 case BFD_RELOC_HI16_S_GOTOFF:
6688 case BFD_RELOC_LO16_PLTOFF:
6689 case BFD_RELOC_HI16_PLTOFF:
6690 case BFD_RELOC_HI16_S_PLTOFF:
6691 case BFD_RELOC_GPREL16:
6692 case BFD_RELOC_16_BASEREL:
6693 case BFD_RELOC_LO16_BASEREL:
6694 case BFD_RELOC_HI16_BASEREL:
6695 case BFD_RELOC_HI16_S_BASEREL:
6696 case BFD_RELOC_PPC_TOC16:
6697 case BFD_RELOC_PPC64_TOC16_LO:
6698 case BFD_RELOC_PPC64_TOC16_HI:
6699 case BFD_RELOC_PPC64_TOC16_HA:
6700 case BFD_RELOC_PPC64_PLTGOT16:
6701 case BFD_RELOC_PPC64_PLTGOT16_LO:
6702 case BFD_RELOC_PPC64_PLTGOT16_HI:
6703 case BFD_RELOC_PPC64_PLTGOT16_HA:
6704 case BFD_RELOC_PPC64_GOT16_DS:
6705 case BFD_RELOC_PPC64_GOT16_LO_DS:
6706 case BFD_RELOC_PPC64_PLT16_LO_DS:
6707 case BFD_RELOC_PPC64_SECTOFF_DS:
6708 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
6709 case BFD_RELOC_PPC64_TOC16_DS:
6710 case BFD_RELOC_PPC64_TOC16_LO_DS:
6711 case BFD_RELOC_PPC64_PLTGOT16_DS:
6712 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
6713 case BFD_RELOC_PPC_EMB_NADDR16:
6714 case BFD_RELOC_PPC_EMB_NADDR16_LO:
6715 case BFD_RELOC_PPC_EMB_NADDR16_HI:
6716 case BFD_RELOC_PPC_EMB_NADDR16_HA:
6717 case BFD_RELOC_PPC_EMB_SDAI16:
6718 case BFD_RELOC_PPC_EMB_SDA2I16:
6719 case BFD_RELOC_PPC_EMB_SDA2REL:
6720 case BFD_RELOC_PPC_EMB_SDA21:
6721 case BFD_RELOC_PPC_EMB_MRKREF:
6722 case BFD_RELOC_PPC_EMB_RELSEC16:
6723 case BFD_RELOC_PPC_EMB_RELST_LO:
6724 case BFD_RELOC_PPC_EMB_RELST_HI:
6725 case BFD_RELOC_PPC_EMB_RELST_HA:
6726 case BFD_RELOC_PPC_EMB_BIT_FLD:
6727 case BFD_RELOC_PPC_EMB_RELSDA:
6728 case BFD_RELOC_PPC_VLE_SDA21:
6729 case BFD_RELOC_PPC_VLE_SDA21_LO:
6730 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
6731 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
6732 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
6733 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
6734 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
6735 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
6736 gas_assert (fixP->fx_addsy != NULL);
6739 case BFD_RELOC_PPC_TLS:
6740 case BFD_RELOC_PPC_TLSGD:
6741 case BFD_RELOC_PPC_TLSLD:
6747 case BFD_RELOC_PPC_B16:
6748 /* Adjust the offset to the instruction boundary. */
6753 case BFD_RELOC_VTABLE_INHERIT:
6754 case BFD_RELOC_VTABLE_ENTRY:
6755 case BFD_RELOC_PPC_DTPMOD:
6756 case BFD_RELOC_PPC_TPREL:
6757 case BFD_RELOC_PPC_DTPREL:
6758 case BFD_RELOC_PPC_COPY:
6759 case BFD_RELOC_PPC_GLOB_DAT:
6760 case BFD_RELOC_32_PLT_PCREL:
6761 case BFD_RELOC_PPC_EMB_NADDR32:
6762 case BFD_RELOC_PPC64_TOC:
6763 case BFD_RELOC_CTOR:
6765 case BFD_RELOC_32_PCREL:
6768 case BFD_RELOC_64_PCREL:
6769 case BFD_RELOC_PPC64_ADDR64_LOCAL:
6770 as_bad_where (fixP->fx_file, fixP->fx_line,
6771 _("%s unsupported as instruction fixup"),
6772 bfd_get_reloc_code_name (fixP->fx_r_type));
6781 /* powerpc uses RELA style relocs, so if emitting a reloc the field
6782 contents can stay at zero. */
6783 #define APPLY_RELOC fixP->fx_done
6785 #define APPLY_RELOC 1
6787 if ((fieldval != 0 && APPLY_RELOC) || operand->insert != NULL)
6789 /* Fetch the instruction, insert the fully resolved operand
6790 value, and stuff the instruction back again. */
6791 where = fixP->fx_frag->fr_literal + fixP->fx_where;
6792 if (target_big_endian)
6794 if (fixP->fx_size == 4)
6795 insn = bfd_getb32 ((unsigned char *) where);
6797 insn = bfd_getb16 ((unsigned char *) where);
6801 if (fixP->fx_size == 4)
6802 insn = bfd_getl32 ((unsigned char *) where);
6804 insn = bfd_getl16 ((unsigned char *) where);
6806 insn = ppc_insert_operand (insn, operand, fieldval,
6807 fixP->tc_fix_data.ppc_cpu,
6808 fixP->fx_file, fixP->fx_line);
6809 if (target_big_endian)
6811 if (fixP->fx_size == 4)
6812 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
6814 bfd_putb16 ((bfd_vma) insn, (unsigned char *) where);
6818 if (fixP->fx_size == 4)
6819 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
6821 bfd_putl16 ((bfd_vma) insn, (unsigned char *) where);
6826 /* Nothing else to do here. */
6829 gas_assert (fixP->fx_addsy != NULL);
6830 if (fixP->fx_r_type == BFD_RELOC_NONE)
6835 /* Use expr_symbol_where to see if this is an expression
6837 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
6838 as_bad_where (fixP->fx_file, fixP->fx_line,
6839 _("unresolved expression that must be resolved"));
6841 as_bad_where (fixP->fx_file, fixP->fx_line,
6842 _("unsupported relocation against %s"),
6843 S_GET_NAME (fixP->fx_addsy));
6850 /* Handle relocs in data. */
6851 switch (fixP->fx_r_type)
6853 case BFD_RELOC_VTABLE_INHERIT:
6855 && !S_IS_DEFINED (fixP->fx_addsy)
6856 && !S_IS_WEAK (fixP->fx_addsy))
6857 S_SET_WEAK (fixP->fx_addsy);
6860 case BFD_RELOC_VTABLE_ENTRY:
6865 /* These can appear with @l etc. in data. */
6866 case BFD_RELOC_LO16:
6867 case BFD_RELOC_LO16_PCREL:
6868 case BFD_RELOC_HI16:
6869 case BFD_RELOC_HI16_PCREL:
6870 case BFD_RELOC_HI16_S:
6871 case BFD_RELOC_HI16_S_PCREL:
6872 case BFD_RELOC_PPC64_HIGHER:
6873 case BFD_RELOC_PPC64_HIGHER_S:
6874 case BFD_RELOC_PPC64_HIGHEST:
6875 case BFD_RELOC_PPC64_HIGHEST_S:
6876 case BFD_RELOC_PPC64_ADDR16_HIGH:
6877 case BFD_RELOC_PPC64_ADDR16_HIGHA:
6878 case BFD_RELOC_PPC64_ADDR64_LOCAL:
6881 case BFD_RELOC_PPC_DTPMOD:
6882 case BFD_RELOC_PPC_TPREL:
6883 case BFD_RELOC_PPC_DTPREL:
6884 S_SET_THREAD_LOCAL (fixP->fx_addsy);
6887 /* Just punt all of these to the linker. */
6888 case BFD_RELOC_PPC_B16_BRTAKEN:
6889 case BFD_RELOC_PPC_B16_BRNTAKEN:
6890 case BFD_RELOC_16_GOTOFF:
6891 case BFD_RELOC_LO16_GOTOFF:
6892 case BFD_RELOC_HI16_GOTOFF:
6893 case BFD_RELOC_HI16_S_GOTOFF:
6894 case BFD_RELOC_LO16_PLTOFF:
6895 case BFD_RELOC_HI16_PLTOFF:
6896 case BFD_RELOC_HI16_S_PLTOFF:
6897 case BFD_RELOC_PPC_COPY:
6898 case BFD_RELOC_PPC_GLOB_DAT:
6899 case BFD_RELOC_16_BASEREL:
6900 case BFD_RELOC_LO16_BASEREL:
6901 case BFD_RELOC_HI16_BASEREL:
6902 case BFD_RELOC_HI16_S_BASEREL:
6903 case BFD_RELOC_PPC_TLS:
6904 case BFD_RELOC_PPC_DTPREL16_LO:
6905 case BFD_RELOC_PPC_DTPREL16_HI:
6906 case BFD_RELOC_PPC_DTPREL16_HA:
6907 case BFD_RELOC_PPC_TPREL16_LO:
6908 case BFD_RELOC_PPC_TPREL16_HI:
6909 case BFD_RELOC_PPC_TPREL16_HA:
6910 case BFD_RELOC_PPC_GOT_TLSGD16:
6911 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
6912 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
6913 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
6914 case BFD_RELOC_PPC_GOT_TLSLD16:
6915 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
6916 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
6917 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
6918 case BFD_RELOC_PPC_GOT_DTPREL16:
6919 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
6920 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
6921 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
6922 case BFD_RELOC_PPC_GOT_TPREL16:
6923 case BFD_RELOC_PPC_GOT_TPREL16_LO:
6924 case BFD_RELOC_PPC_GOT_TPREL16_HI:
6925 case BFD_RELOC_PPC_GOT_TPREL16_HA:
6926 case BFD_RELOC_24_PLT_PCREL:
6927 case BFD_RELOC_PPC_LOCAL24PC:
6928 case BFD_RELOC_32_PLT_PCREL:
6929 case BFD_RELOC_GPREL16:
6930 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
6931 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
6932 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
6933 case BFD_RELOC_PPC_EMB_NADDR32:
6934 case BFD_RELOC_PPC_EMB_NADDR16:
6935 case BFD_RELOC_PPC_EMB_NADDR16_LO:
6936 case BFD_RELOC_PPC_EMB_NADDR16_HI:
6937 case BFD_RELOC_PPC_EMB_NADDR16_HA:
6938 case BFD_RELOC_PPC_EMB_SDAI16:
6939 case BFD_RELOC_PPC_EMB_SDA2REL:
6940 case BFD_RELOC_PPC_EMB_SDA2I16:
6941 case BFD_RELOC_PPC_EMB_SDA21:
6942 case BFD_RELOC_PPC_VLE_SDA21_LO:
6943 case BFD_RELOC_PPC_EMB_MRKREF:
6944 case BFD_RELOC_PPC_EMB_RELSEC16:
6945 case BFD_RELOC_PPC_EMB_RELST_LO:
6946 case BFD_RELOC_PPC_EMB_RELST_HI:
6947 case BFD_RELOC_PPC_EMB_RELST_HA:
6948 case BFD_RELOC_PPC_EMB_BIT_FLD:
6949 case BFD_RELOC_PPC_EMB_RELSDA:
6950 case BFD_RELOC_PPC64_TOC:
6951 case BFD_RELOC_PPC_TOC16:
6952 case BFD_RELOC_PPC64_TOC16_LO:
6953 case BFD_RELOC_PPC64_TOC16_HI:
6954 case BFD_RELOC_PPC64_TOC16_HA:
6955 case BFD_RELOC_PPC64_DTPREL16_HIGH:
6956 case BFD_RELOC_PPC64_DTPREL16_HIGHA:
6957 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
6958 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
6959 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
6960 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
6961 case BFD_RELOC_PPC64_TPREL16_HIGH:
6962 case BFD_RELOC_PPC64_TPREL16_HIGHA:
6963 case BFD_RELOC_PPC64_TPREL16_HIGHER:
6964 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
6965 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
6966 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
6972 case BFD_RELOC_NONE:
6974 case BFD_RELOC_CTOR:
6976 case BFD_RELOC_32_PCREL:
6979 case BFD_RELOC_64_PCREL:
6981 case BFD_RELOC_16_PCREL:
6987 _("Gas failure, reloc value %d\n"), fixP->fx_r_type);
6992 if (fixP->fx_size && APPLY_RELOC)
6993 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6994 fieldval, fixP->fx_size);
6996 && (seg->flags & SEC_CODE) != 0
6997 && fixP->fx_size == 4
7000 && (fixP->fx_r_type == BFD_RELOC_32
7001 || fixP->fx_r_type == BFD_RELOC_CTOR
7002 || fixP->fx_r_type == BFD_RELOC_32_PCREL))
7003 as_warn_where (fixP->fx_file, fixP->fx_line,
7004 _("data in executable section"));
7007 /* We are only able to convert some relocs to pc-relative. */
7008 if (!fixP->fx_done && fixP->fx_pcrel)
7010 switch (fixP->fx_r_type)
7012 case BFD_RELOC_LO16:
7013 fixP->fx_r_type = BFD_RELOC_LO16_PCREL;
7016 case BFD_RELOC_HI16:
7017 fixP->fx_r_type = BFD_RELOC_HI16_PCREL;
7020 case BFD_RELOC_HI16_S:
7021 fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL;
7025 fixP->fx_r_type = BFD_RELOC_64_PCREL;
7029 fixP->fx_r_type = BFD_RELOC_32_PCREL;
7033 fixP->fx_r_type = BFD_RELOC_16_PCREL;
7036 /* Some of course are already pc-relative. */
7037 case BFD_RELOC_LO16_PCREL:
7038 case BFD_RELOC_HI16_PCREL:
7039 case BFD_RELOC_HI16_S_PCREL:
7040 case BFD_RELOC_64_PCREL:
7041 case BFD_RELOC_32_PCREL:
7042 case BFD_RELOC_16_PCREL:
7043 case BFD_RELOC_PPC_B16:
7044 case BFD_RELOC_PPC_B16_BRTAKEN:
7045 case BFD_RELOC_PPC_B16_BRNTAKEN:
7046 case BFD_RELOC_PPC_B26:
7047 case BFD_RELOC_PPC_LOCAL24PC:
7048 case BFD_RELOC_24_PLT_PCREL:
7049 case BFD_RELOC_32_PLT_PCREL:
7050 case BFD_RELOC_64_PLT_PCREL:
7051 case BFD_RELOC_PPC_VLE_REL8:
7052 case BFD_RELOC_PPC_VLE_REL15:
7053 case BFD_RELOC_PPC_VLE_REL24:
7062 /* Use expr_symbol_where to see if this is an
7063 expression symbol. */
7064 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
7065 as_bad_where (fixP->fx_file, fixP->fx_line,
7066 _("unresolved expression that must"
7069 as_bad_where (fixP->fx_file, fixP->fx_line,
7070 _("cannot emit PC relative %s relocation"
7072 bfd_get_reloc_code_name (fixP->fx_r_type),
7073 S_GET_NAME (fixP->fx_addsy));
7076 as_bad_where (fixP->fx_file, fixP->fx_line,
7077 _("unable to resolve expression"));
7084 ppc_elf_validate_fix (fixP, seg);
7085 fixP->fx_addnumber = value;
7087 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
7088 from the section contents. If we are going to be emitting a reloc
7089 then the section contents are immaterial, so don't warn if they
7090 happen to overflow. Leave such warnings to ld. */
7093 fixP->fx_no_overflow = 1;
7095 /* Arrange to emit .TOC. as a normal symbol if used in anything
7096 but .TOC.@tocbase. */
7098 && fixP->fx_r_type != BFD_RELOC_PPC64_TOC
7099 && fixP->fx_addsy != NULL
7100 && strcmp (S_GET_NAME (fixP->fx_addsy), ".TOC.") == 0)
7101 symbol_get_bfdsym (fixP->fx_addsy)->flags |= BSF_KEEP;
7104 if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16)
7105 fixP->fx_addnumber = 0;
7109 fixP->fx_addnumber = 0;
7111 /* We want to use the offset within the toc, not the actual VMA
7113 fixP->fx_addnumber =
7114 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy))
7115 - S_GET_VALUE (ppc_toc_csect);
7116 /* Set *valP to avoid errors. */
7123 /* Generate a reloc for a fixup. */
7126 tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp)
7130 reloc = (arelent *) xmalloc (sizeof (arelent));
7132 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
7133 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
7134 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
7135 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
7136 if (reloc->howto == (reloc_howto_type *) NULL)
7138 as_bad_where (fixp->fx_file, fixp->fx_line,
7139 _("reloc %d not supported by object file format"),
7140 (int) fixp->fx_r_type);
7143 reloc->addend = fixp->fx_addnumber;
7149 ppc_cfi_frame_initial_instructions (void)
7151 cfi_add_CFA_def_cfa (1, 0);
7155 tc_ppc_regname_to_dw2regnum (char *regname)
7157 unsigned int regnum = -1;
7161 static struct { char *name; int dw2regnum; } regnames[] =
7163 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
7164 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
7165 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
7166 { "spe_acc", 111 }, { "spefscr", 112 }
7169 for (i = 0; i < ARRAY_SIZE (regnames); ++i)
7170 if (strcmp (regnames[i].name, regname) == 0)
7171 return regnames[i].dw2regnum;
7173 if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v')
7175 p = regname + 1 + (regname[1] == '.');
7176 regnum = strtoul (p, &q, 10);
7177 if (p == q || *q || regnum >= 32)
7179 if (regname[0] == 'f')
7181 else if (regname[0] == 'v')
7184 else if (regname[0] == 'c' && regname[1] == 'r')
7186 p = regname + 2 + (regname[2] == '.');
7187 if (p[0] < '0' || p[0] > '7' || p[1])
7189 regnum = p[0] - '0' + 68;