1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright (C) 1994, 95, 96, 97, 98, 1999 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 2, 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, 59 Temple Place - Suite 330, Boston, MA
27 #include "opcode/ppc.h"
37 /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
39 /* Tell the main code what the endianness is. */
40 extern int target_big_endian;
42 /* Whether or not, we've set target_big_endian. */
43 static int set_target_endian = 0;
45 /* Whether to use user friendly register names. */
46 #ifndef TARGET_REG_NAMES_P
48 #define TARGET_REG_NAMES_P true
50 #define TARGET_REG_NAMES_P false
54 static boolean reg_names_p = TARGET_REG_NAMES_P;
56 static boolean register_name PARAMS ((expressionS *));
57 static void ppc_set_cpu PARAMS ((void));
58 static unsigned long ppc_insert_operand
59 PARAMS ((unsigned long insn, const struct powerpc_operand *operand,
60 offsetT val, char *file, unsigned int line));
61 static void ppc_macro PARAMS ((char *str, const struct powerpc_macro *macro));
62 static void ppc_byte PARAMS ((int));
63 static int ppc_is_toc_sym PARAMS ((symbolS *sym));
64 static void ppc_tc PARAMS ((int));
67 static void ppc_comm PARAMS ((int));
68 static void ppc_bb PARAMS ((int));
69 static void ppc_bc PARAMS ((int));
70 static void ppc_bf PARAMS ((int));
71 static void ppc_biei PARAMS ((int));
72 static void ppc_bs PARAMS ((int));
73 static void ppc_eb PARAMS ((int));
74 static void ppc_ec PARAMS ((int));
75 static void ppc_ef PARAMS ((int));
76 static void ppc_es PARAMS ((int));
77 static void ppc_csect PARAMS ((int));
78 static void ppc_change_csect PARAMS ((symbolS *));
79 static void ppc_function PARAMS ((int));
80 static void ppc_extern PARAMS ((int));
81 static void ppc_lglobl PARAMS ((int));
82 static void ppc_section PARAMS ((int));
83 static void ppc_named_section PARAMS ((int));
84 static void ppc_stabx PARAMS ((int));
85 static void ppc_rename PARAMS ((int));
86 static void ppc_toc PARAMS ((int));
87 static void ppc_xcoff_cons PARAMS ((int));
88 static void ppc_vbyte PARAMS ((int));
92 static bfd_reloc_code_real_type ppc_elf_suffix PARAMS ((char **, expressionS *));
93 static void ppc_elf_cons PARAMS ((int));
94 static void ppc_elf_rdata PARAMS ((int));
95 static void ppc_elf_lcomm PARAMS ((int));
96 static void ppc_elf_validate_fix PARAMS ((fixS *, segT));
100 static void ppc_set_current_section PARAMS ((segT));
101 static void ppc_previous PARAMS ((int));
102 static void ppc_pdata PARAMS ((int));
103 static void ppc_ydata PARAMS ((int));
104 static void ppc_reldata PARAMS ((int));
105 static void ppc_rdata PARAMS ((int));
106 static void ppc_ualong PARAMS ((int));
107 static void ppc_znop PARAMS ((int));
108 static void ppc_pe_comm PARAMS ((int));
109 static void ppc_pe_section PARAMS ((int));
110 static void ppc_pe_function PARAMS ((int));
111 static void ppc_pe_tocd PARAMS ((int));
114 /* Generic assembler global variables which must be defined by all
118 /* This string holds the chars that always start a comment. If the
119 pre-processor is disabled, these aren't very useful. The macro
120 tc_comment_chars points to this. We use this, rather than the
121 usual comment_chars, so that we can switch for Solaris conventions. */
122 static const char ppc_solaris_comment_chars[] = "#!";
123 static const char ppc_eabi_comment_chars[] = "#";
125 #ifdef TARGET_SOLARIS_COMMENT
126 const char *ppc_comment_chars = ppc_solaris_comment_chars;
128 const char *ppc_comment_chars = ppc_eabi_comment_chars;
131 const char comment_chars[] = "#";
134 /* Characters which start a comment at the beginning of a line. */
135 const char line_comment_chars[] = "#";
137 /* Characters which may be used to separate multiple commands on a
139 const char line_separator_chars[] = ";";
141 /* Characters which are used to indicate an exponent in a floating
143 const char EXP_CHARS[] = "eE";
145 /* Characters which mean that a number is a floating point constant,
147 const char FLT_CHARS[] = "dD";
149 /* The target specific pseudo-ops which we support. */
151 const pseudo_typeS md_pseudo_table[] =
153 /* Pseudo-ops which must be overridden. */
154 { "byte", ppc_byte, 0 },
157 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
158 legitimately belong in the obj-*.c file. However, XCOFF is based
159 on COFF, and is only implemented for the RS/6000. We just use
160 obj-coff.c, and add what we need here. */
161 { "comm", ppc_comm, 0 },
162 { "lcomm", ppc_comm, 1 },
166 { "bi", ppc_biei, 0 },
168 { "csect", ppc_csect, 0 },
169 { "data", ppc_section, 'd' },
173 { "ei", ppc_biei, 1 },
175 { "extern", ppc_extern, 0 },
176 { "function", ppc_function, 0 },
177 { "lglobl", ppc_lglobl, 0 },
178 { "rename", ppc_rename, 0 },
179 { "section", ppc_named_section, 0 },
180 { "stabx", ppc_stabx, 0 },
181 { "text", ppc_section, 't' },
182 { "toc", ppc_toc, 0 },
183 { "long", ppc_xcoff_cons, 2 },
184 { "word", ppc_xcoff_cons, 1 },
185 { "short", ppc_xcoff_cons, 1 },
186 { "vbyte", ppc_vbyte, 0 },
190 { "long", ppc_elf_cons, 4 },
191 { "word", ppc_elf_cons, 2 },
192 { "short", ppc_elf_cons, 2 },
193 { "rdata", ppc_elf_rdata, 0 },
194 { "rodata", ppc_elf_rdata, 0 },
195 { "lcomm", ppc_elf_lcomm, 0 },
199 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */
200 { "previous", ppc_previous, 0 },
201 { "pdata", ppc_pdata, 0 },
202 { "ydata", ppc_ydata, 0 },
203 { "reldata", ppc_reldata, 0 },
204 { "rdata", ppc_rdata, 0 },
205 { "ualong", ppc_ualong, 0 },
206 { "znop", ppc_znop, 0 },
207 { "comm", ppc_pe_comm, 0 },
208 { "lcomm", ppc_pe_comm, 1 },
209 { "section", ppc_pe_section, 0 },
210 { "function", ppc_pe_function,0 },
211 { "tocd", ppc_pe_tocd, 0 },
214 /* This pseudo-op is used even when not generating XCOFF output. */
221 /* Predefined register names if -mregnames (or default for Windows NT). */
222 /* In general, there are lots of them, in an attempt to be compatible */
223 /* with a number of other Windows NT assemblers. */
225 /* Structure to hold information about predefined registers. */
232 /* List of registers that are pre-defined:
234 Each general register has predefined names of the form:
235 1. r<reg_num> which has the value <reg_num>.
236 2. r.<reg_num> which has the value <reg_num>.
239 Each floating point register has predefined names of the form:
240 1. f<reg_num> which has the value <reg_num>.
241 2. f.<reg_num> which has the value <reg_num>.
243 Each condition register has predefined names of the form:
244 1. cr<reg_num> which has the value <reg_num>.
245 2. cr.<reg_num> which has the value <reg_num>.
247 There are individual registers as well:
248 sp or r.sp has the value 1
249 rtoc or r.toc has the value 2
250 fpscr has the value 0
256 dsisr has the value 18
258 sdr1 has the value 25
259 srr0 has the value 26
260 srr1 has the value 27
262 The table is sorted. Suitable for searching by a binary search. */
264 static const struct pd_reg pre_defined_registers[] =
266 { "cr.0", 0 }, /* Condition Registers */
286 { "dar", 19 }, /* Data Access Register */
287 { "dec", 22 }, /* Decrementer */
288 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
290 { "f.0", 0 }, /* Floating point registers */
358 { "lr", 8 }, /* Link Register */
362 { "r.0", 0 }, /* General Purpose Registers */
395 { "r.sp", 1 }, /* Stack Pointer */
397 { "r.toc", 2 }, /* Pointer to the table of contents */
399 { "r0", 0 }, /* More general purpose registers */
432 { "rtoc", 2 }, /* Table of contents */
434 { "sdr1", 25 }, /* Storage Description Register 1 */
438 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
439 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
445 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
447 /* Given NAME, find the register number associated with that name, return
448 the integer value associated with the given name or -1 on failure. */
450 static int reg_name_search
451 PARAMS ((const struct pd_reg *, int, const char * name));
454 reg_name_search (regs, regcount, name)
455 const struct pd_reg *regs;
459 int middle, low, high;
467 middle = (low + high) / 2;
468 cmp = strcasecmp (name, regs[middle].name);
474 return regs[middle].value;
482 * Summary of register_name().
484 * in: Input_line_pointer points to 1st char of operand.
486 * out: A expressionS.
487 * The operand may have been a register: in this case, X_op == O_register,
488 * X_add_number is set to the register number, and truth is returned.
489 * Input_line_pointer->(next non-blank) char after operand, or is in its
494 register_name (expressionP)
495 expressionS *expressionP;
502 /* Find the spelling of the operand */
503 start = name = input_line_pointer;
504 if (name[0] == '%' && isalpha (name[1]))
505 name = ++input_line_pointer;
507 else if (!reg_names_p || !isalpha (name[0]))
510 c = get_symbol_end ();
511 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
513 /* look to see if it's in the register table */
516 expressionP->X_op = O_register;
517 expressionP->X_add_number = reg_number;
519 /* make the rest nice */
520 expressionP->X_add_symbol = NULL;
521 expressionP->X_op_symbol = NULL;
522 *input_line_pointer = c; /* put back the delimiting char */
527 /* reset the line as if we had not done anything */
528 *input_line_pointer = c; /* put back the delimiting char */
529 input_line_pointer = start; /* reset input_line pointer */
534 /* This function is called for each symbol seen in an expression. It
535 handles the special parsing which PowerPC assemblers are supposed
536 to use for condition codes. */
538 /* Whether to do the special parsing. */
539 static boolean cr_operand;
541 /* Names to recognize in a condition code. This table is sorted. */
542 static const struct pd_reg cr_names[] =
559 /* Parsing function. This returns non-zero if it recognized an
563 ppc_parse_name (name, expr)
572 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
577 expr->X_op = O_constant;
578 expr->X_add_number = val;
583 /* Local variables. */
585 /* The type of processor we are assembling for. This is one or more
586 of the PPC_OPCODE flags defined in opcode/ppc.h. */
587 static int ppc_cpu = 0;
589 /* The size of the processor we are assembling for. This is either
590 PPC_OPCODE_32 or PPC_OPCODE_64. */
591 static int ppc_size = PPC_OPCODE_32;
593 /* Opcode hash table. */
594 static struct hash_control *ppc_hash;
596 /* Macro hash table. */
597 static struct hash_control *ppc_macro_hash;
600 /* What type of shared library support to use */
601 static enum { SHLIB_NONE, SHLIB_PIC, SHILB_MRELOCATABLE } shlib = SHLIB_NONE;
603 /* Flags to set in the elf header */
604 static flagword ppc_flags = 0;
606 /* Whether this is Solaris or not. */
607 #ifdef TARGET_SOLARIS_COMMENT
608 #define SOLARIS_P true
610 #define SOLARIS_P false
613 static boolean msolaris = SOLARIS_P;
618 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
619 using a bunch of different sections. These assembler sections,
620 however, are all encompassed within the .text or .data sections of
621 the final output file. We handle this by using different
622 subsegments within these main segments. */
624 /* Next subsegment to allocate within the .text segment. */
625 static subsegT ppc_text_subsegment = 2;
627 /* Linked list of csects in the text section. */
628 static symbolS *ppc_text_csects;
630 /* Next subsegment to allocate within the .data segment. */
631 static subsegT ppc_data_subsegment = 2;
633 /* Linked list of csects in the data section. */
634 static symbolS *ppc_data_csects;
636 /* The current csect. */
637 static symbolS *ppc_current_csect;
639 /* The RS/6000 assembler uses a TOC which holds addresses of functions
640 and variables. Symbols are put in the TOC with the .tc pseudo-op.
641 A special relocation is used when accessing TOC entries. We handle
642 the TOC as a subsegment within the .data segment. We set it up if
643 we see a .toc pseudo-op, and save the csect symbol here. */
644 static symbolS *ppc_toc_csect;
646 /* The first frag in the TOC subsegment. */
647 static fragS *ppc_toc_frag;
649 /* The first frag in the first subsegment after the TOC in the .data
650 segment. NULL if there are no subsegments after the TOC. */
651 static fragS *ppc_after_toc_frag;
653 /* The current static block. */
654 static symbolS *ppc_current_block;
656 /* The COFF debugging section; set by md_begin. This is not the
657 .debug section, but is instead the secret BFD section which will
658 cause BFD to set the section number of a symbol to N_DEBUG. */
659 static asection *ppc_coff_debug_section;
661 #endif /* OBJ_XCOFF */
665 /* Various sections that we need for PE coff support. */
666 static segT ydata_section;
667 static segT pdata_section;
668 static segT reldata_section;
669 static segT rdata_section;
670 static segT tocdata_section;
672 /* The current section and the previous section. See ppc_previous. */
673 static segT ppc_previous_section;
674 static segT ppc_current_section;
679 symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
683 CONST char *md_shortopts = "b:l:usm:K:VQ:";
685 CONST char *md_shortopts = "um:";
687 struct option md_longopts[] = {
688 {NULL, no_argument, NULL, 0}
690 size_t md_longopts_size = sizeof(md_longopts);
693 md_parse_option (c, arg)
700 /* -u means that any undefined symbols should be treated as
701 external, which is the default for gas anyhow. */
706 /* Solaris as takes -le (presumably for little endian). For completeness
707 sake, recognize -be also. */
708 if (strcmp (arg, "e") == 0)
710 target_big_endian = 0;
711 set_target_endian = 1;
719 if (strcmp (arg, "e") == 0)
721 target_big_endian = 1;
722 set_target_endian = 1;
730 /* Recognize -K PIC */
731 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
734 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
743 /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2
745 if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0)
746 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2;
747 /* -mpwr means to assemble for the IBM POWER (RIOS1). */
748 else if (strcmp (arg, "pwr") == 0)
749 ppc_cpu = PPC_OPCODE_POWER;
750 /* -m601 means to assemble for the Motorola PowerPC 601, which includes
751 instructions that are holdovers from the Power. */
752 else if (strcmp (arg, "601") == 0)
753 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_601;
754 /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the
755 Motorola PowerPC 603/604. */
756 else if (strcmp (arg, "ppc") == 0
757 || strcmp (arg, "ppc32") == 0
758 || strcmp (arg, "403") == 0
759 || strcmp (arg, "603") == 0
760 || strcmp (arg, "604") == 0)
761 ppc_cpu = PPC_OPCODE_PPC;
762 /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC
764 else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0)
766 ppc_cpu = PPC_OPCODE_PPC;
767 ppc_size = PPC_OPCODE_64;
769 else if (strcmp (arg, "ppc64bridge") == 0)
771 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_64_BRIDGE;
772 ppc_size = PPC_OPCODE_64;
774 /* -mcom means assemble for the common intersection between Power
775 and PowerPC. At present, we just allow the union, rather
776 than the intersection. */
777 else if (strcmp (arg, "com") == 0)
778 ppc_cpu = PPC_OPCODE_COMMON;
779 /* -many means to assemble for any architecture (PWR/PWRX/PPC). */
780 else if (strcmp (arg, "any") == 0)
781 ppc_cpu = PPC_OPCODE_ANY;
783 else if (strcmp (arg, "regnames") == 0)
786 else if (strcmp (arg, "no-regnames") == 0)
790 /* -mrelocatable/-mrelocatable-lib -- warn about initializations that require relocation */
791 else if (strcmp (arg, "relocatable") == 0)
793 shlib = SHILB_MRELOCATABLE;
794 ppc_flags |= EF_PPC_RELOCATABLE;
797 else if (strcmp (arg, "relocatable-lib") == 0)
799 shlib = SHILB_MRELOCATABLE;
800 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
803 /* -memb, set embedded bit */
804 else if (strcmp (arg, "emb") == 0)
805 ppc_flags |= EF_PPC_EMB;
807 /* -mlittle/-mbig set the endianess */
808 else if (strcmp (arg, "little") == 0 || strcmp (arg, "little-endian") == 0)
810 target_big_endian = 0;
811 set_target_endian = 1;
814 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
816 target_big_endian = 1;
817 set_target_endian = 1;
820 else if (strcmp (arg, "solaris") == 0)
823 ppc_comment_chars = ppc_solaris_comment_chars;
826 else if (strcmp (arg, "no-solaris") == 0)
829 ppc_comment_chars = ppc_eabi_comment_chars;
834 as_bad (_("invalid switch -m%s"), arg);
840 /* -V: SVR4 argument to print version ID. */
845 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
846 should be emitted or not. FIXME: Not implemented. */
850 /* Solaris takes -s to specify that .stabs go in a .stabs section,
851 rather than .stabs.excl, which is ignored by the linker.
852 FIXME: Not implemented. */
868 md_show_usage (stream)
874 -mpwrx, -mpwr2 generate code for IBM POWER/2 (RIOS2)\n\
875 -mpwr generate code for IBM POWER (RIOS1)\n\
876 -m601 generate code for Motorola PowerPC 601\n\
877 -mppc, -mppc32, -m403, -m603, -m604\n\
878 generate code for Motorola PowerPC 603/604\n\
879 -mppc64, -m620 generate code for Motorola PowerPC 620\n\
880 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
881 -mcom generate code Power/PowerPC common instructions\n\
882 -many generate code for any architecture (PWR/PWRX/PPC)\n\
883 -mregnames Allow symbolic names for registers\n\
884 -mno-regnames Do not allow symbolic names for registers\n"));
887 -mrelocatable support for GCC's -mrelocatble option\n\
888 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
889 -memb set PPC_EMB bit in ELF flags\n\
890 -mlittle, -mlittle-endian\n\
891 generate code for a little endian machine\n\
892 -mbig, -mbig-endian generate code for a big endian machine\n\
893 -msolaris generate code for Solaris\n\
894 -mno-solaris do not generate code for Solaris\n\
895 -V print assembler version number\n\
896 -Qy, -Qn ignored\n"));
900 /* Set ppc_cpu if it is not already set. */
905 const char *default_os = TARGET_OS;
906 const char *default_cpu = TARGET_CPU;
910 if (strncmp (default_os, "aix", 3) == 0
911 && default_os[3] >= '4' && default_os[3] <= '9')
912 ppc_cpu = PPC_OPCODE_COMMON;
913 else if (strncmp (default_os, "aix3", 4) == 0)
914 ppc_cpu = PPC_OPCODE_POWER;
915 else if (strcmp (default_cpu, "rs6000") == 0)
916 ppc_cpu = PPC_OPCODE_POWER;
917 else if (strcmp (default_cpu, "powerpc") == 0
918 || strcmp (default_cpu, "powerpcle") == 0)
919 ppc_cpu = PPC_OPCODE_PPC;
921 as_fatal (_("Unknown default cpu = %s, os = %s"), default_cpu, default_os);
925 /* Figure out the BFD architecture to use. */
927 enum bfd_architecture
930 const char *default_cpu = TARGET_CPU;
933 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
934 return bfd_arch_powerpc;
935 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
936 return bfd_arch_rs6000;
937 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
939 if (strcmp (default_cpu, "rs6000") == 0)
940 return bfd_arch_rs6000;
941 else if (strcmp (default_cpu, "powerpc") == 0
942 || strcmp (default_cpu, "powerpcle") == 0)
943 return bfd_arch_powerpc;
946 as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
947 return bfd_arch_unknown;
950 /* This function is called when the assembler starts up. It is called
951 after the options have been parsed and the output file has been
957 register const struct powerpc_opcode *op;
958 const struct powerpc_opcode *op_end;
959 const struct powerpc_macro *macro;
960 const struct powerpc_macro *macro_end;
961 boolean dup_insn = false;
966 /* Set the ELF flags if desired. */
967 if (ppc_flags && !msolaris)
968 bfd_set_private_flags (stdoutput, ppc_flags);
971 /* Insert the opcodes into a hash table. */
972 ppc_hash = hash_new ();
974 op_end = powerpc_opcodes + powerpc_num_opcodes;
975 for (op = powerpc_opcodes; op < op_end; op++)
977 know ((op->opcode & op->mask) == op->opcode);
979 if ((op->flags & ppc_cpu) != 0
980 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
981 || (op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == ppc_size
982 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0))
986 retval = hash_insert (ppc_hash, op->name, (PTR) op);
987 if (retval != (const char *) NULL)
989 /* Ignore Power duplicates for -m601 */
990 if ((ppc_cpu & PPC_OPCODE_601) != 0
991 && (op->flags & PPC_OPCODE_POWER) != 0)
994 as_bad (_("Internal assembler error for instruction %s"), op->name);
1000 /* Insert the macros into a hash table. */
1001 ppc_macro_hash = hash_new ();
1003 macro_end = powerpc_macros + powerpc_num_macros;
1004 for (macro = powerpc_macros; macro < macro_end; macro++)
1006 if ((macro->flags & ppc_cpu) != 0)
1010 retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro);
1011 if (retval != (const char *) NULL)
1013 as_bad (_("Internal assembler error for macro %s"), macro->name);
1022 /* Tell the main code what the endianness is if it is not overidden by the user. */
1023 if (!set_target_endian)
1025 set_target_endian = 1;
1026 target_big_endian = PPC_BIG_ENDIAN;
1030 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1032 /* Create dummy symbols to serve as initial csects. This forces the
1033 text csects to precede the data csects. These symbols will not
1035 ppc_text_csects = symbol_make ("dummy\001");
1036 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
1037 ppc_data_csects = symbol_make ("dummy\001");
1038 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
1043 ppc_current_section = text_section;
1044 ppc_previous_section = 0;
1049 /* Insert an operand value into an instruction. */
1051 static unsigned long
1052 ppc_insert_operand (insn, operand, val, file, line)
1054 const struct powerpc_operand *operand;
1059 if (operand->bits != 32)
1064 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1066 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
1067 max = (1 << operand->bits) - 1;
1069 max = (1 << (operand->bits - 1)) - 1;
1070 min = - (1 << (operand->bits - 1));
1072 if (ppc_size == PPC_OPCODE_32)
1074 /* Some people write 32 bit hex constants with the sign
1075 extension done by hand. This shouldn't really be
1076 valid, but, to permit this code to assemble on a 64
1077 bit host, we sign extend the 32 bit value. */
1079 && (val & 0x80000000) != 0
1080 && (val & 0xffffffff) == val)
1089 max = (1 << operand->bits) - 1;
1093 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1098 if (test < (offsetT) min || test > (offsetT) max)
1101 _("operand out of range (%s not between %ld and %ld)");
1104 sprint_value (buf, test);
1105 if (file == (char *) NULL)
1106 as_bad (err, buf, min, max);
1108 as_bad_where (file, line, err, buf, min, max);
1112 if (operand->insert)
1117 insn = (*operand->insert) (insn, (long) val, &errmsg);
1118 if (errmsg != (const char *) NULL)
1122 insn |= (((long) val & ((1 << operand->bits) - 1))
1130 /* Parse @got, etc. and return the desired relocation. */
1131 static bfd_reloc_code_real_type
1132 ppc_elf_suffix (str_p, exp_p)
1139 bfd_reloc_code_real_type reloc;
1147 struct map_bfd *ptr;
1149 #define MAP(str,reloc) { str, sizeof(str)-1, reloc }
1151 static struct map_bfd mapping[] = {
1152 MAP ("l", BFD_RELOC_LO16),
1153 MAP ("h", BFD_RELOC_HI16),
1154 MAP ("ha", BFD_RELOC_HI16_S),
1155 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
1156 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
1157 MAP ("got", BFD_RELOC_16_GOTOFF),
1158 MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
1159 MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
1160 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
1161 MAP ("fixup", BFD_RELOC_CTOR), /* warnings with -mrelocatable */
1162 MAP ("plt", BFD_RELOC_24_PLT_PCREL),
1163 MAP ("pltrel24", BFD_RELOC_24_PLT_PCREL),
1164 MAP ("copy", BFD_RELOC_PPC_COPY),
1165 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
1166 MAP ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
1167 MAP ("local", BFD_RELOC_PPC_LOCAL24PC),
1168 MAP ("pltrel", BFD_RELOC_32_PLT_PCREL),
1169 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
1170 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
1171 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
1172 MAP ("sdarel", BFD_RELOC_GPREL16),
1173 MAP ("sectoff", BFD_RELOC_32_BASEREL),
1174 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
1175 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
1176 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
1177 MAP ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
1178 MAP ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
1179 MAP ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
1180 MAP ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
1181 MAP ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
1182 MAP ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
1183 MAP ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
1184 MAP ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
1185 MAP ("sda21", BFD_RELOC_PPC_EMB_SDA21),
1186 MAP ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
1187 MAP ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
1188 MAP ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
1189 MAP ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
1190 MAP ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
1191 MAP ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
1192 MAP ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
1193 MAP ("xgot", BFD_RELOC_PPC_TOC16),
1195 { (char *)0, 0, BFD_RELOC_UNUSED }
1199 return BFD_RELOC_UNUSED;
1201 for (ch = *str, str2 = ident;
1202 (str2 < ident + sizeof (ident) - 1
1203 && (isalnum (ch) || ch == '@'));
1206 *str2++ = (islower (ch)) ? ch : tolower (ch);
1213 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
1214 if (ch == ptr->string[0]
1215 && len == ptr->length
1216 && memcmp (ident, ptr->string, ptr->length) == 0)
1218 if (exp_p->X_add_number != 0
1219 && (ptr->reloc == BFD_RELOC_16_GOTOFF
1220 || ptr->reloc == BFD_RELOC_LO16_GOTOFF
1221 || ptr->reloc == BFD_RELOC_HI16_GOTOFF
1222 || ptr->reloc == BFD_RELOC_HI16_S_GOTOFF))
1223 as_warn (_("identifier+constant@got means identifier@got+constant"));
1225 /* Now check for identifier@suffix+constant */
1226 if (*str == '-' || *str == '+')
1228 char *orig_line = input_line_pointer;
1229 expressionS new_exp;
1231 input_line_pointer = str;
1232 expression (&new_exp);
1233 if (new_exp.X_op == O_constant)
1235 exp_p->X_add_number += new_exp.X_add_number;
1236 str = input_line_pointer;
1239 if (&input_line_pointer != str_p)
1240 input_line_pointer = orig_line;
1247 return BFD_RELOC_UNUSED;
1250 /* Like normal .long/.short/.word, except support @got, etc. */
1251 /* clobbers input_line_pointer, checks */
1254 ppc_elf_cons (nbytes)
1255 register int nbytes; /* 1=.byte, 2=.word, 4=.long */
1258 bfd_reloc_code_real_type reloc;
1260 if (is_it_end_of_statement ())
1262 demand_empty_rest_of_line ();
1269 if (exp.X_op == O_symbol
1270 && *input_line_pointer == '@'
1271 && (reloc = ppc_elf_suffix (&input_line_pointer, &exp)) != BFD_RELOC_UNUSED)
1273 reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1274 int size = bfd_get_reloc_size (reloc_howto);
1277 as_bad (_("%s relocations do not fit in %d bytes\n"), reloc_howto->name, nbytes);
1281 register char *p = frag_more ((int) nbytes);
1282 int offset = nbytes - size;
1284 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, &exp, 0, reloc);
1288 emit_expr (&exp, (unsigned int) nbytes);
1290 while (*input_line_pointer++ == ',');
1292 input_line_pointer--; /* Put terminator back into stream. */
1293 demand_empty_rest_of_line ();
1296 /* Solaris pseduo op to change to the .rodata section. */
1301 char *save_line = input_line_pointer;
1302 static char section[] = ".rodata\n";
1304 /* Just pretend this is .section .rodata */
1305 input_line_pointer = section;
1306 obj_elf_section (xxx);
1308 input_line_pointer = save_line;
1311 /* Pseudo op to make file scope bss items */
1316 register char *name;
1320 register symbolS *symbolP;
1327 name = input_line_pointer;
1328 c = get_symbol_end ();
1330 /* just after name is now '\0' */
1331 p = input_line_pointer;
1334 if (*input_line_pointer != ',')
1336 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
1337 ignore_rest_of_line ();
1341 input_line_pointer++; /* skip ',' */
1342 if ((size = get_absolute_expression ()) < 0)
1344 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
1345 ignore_rest_of_line ();
1349 /* The third argument to .lcomm is the alignment. */
1350 if (*input_line_pointer != ',')
1354 ++input_line_pointer;
1355 align = get_absolute_expression ();
1358 as_warn (_("ignoring bad alignment"));
1364 symbolP = symbol_find_or_make (name);
1367 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
1369 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
1370 S_GET_NAME (symbolP));
1371 ignore_rest_of_line ();
1375 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
1377 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
1378 S_GET_NAME (symbolP),
1379 (long) S_GET_VALUE (symbolP),
1382 ignore_rest_of_line ();
1388 old_subsec = now_subseg;
1391 /* convert to a power of 2 alignment */
1392 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
1395 as_bad (_("Common alignment not a power of 2"));
1396 ignore_rest_of_line ();
1403 record_alignment (bss_section, align2);
1404 subseg_set (bss_section, 0);
1406 frag_align (align2, 0, 0);
1407 if (S_GET_SEGMENT (symbolP) == bss_section)
1408 symbol_get_frag (symbolP)->fr_symbol = 0;
1409 symbol_set_frag (symbolP, frag_now);
1410 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
1413 S_SET_SIZE (symbolP, size);
1414 S_SET_SEGMENT (symbolP, bss_section);
1415 subseg_set (old_sec, old_subsec);
1416 demand_empty_rest_of_line ();
1419 /* Validate any relocations emitted for -mrelocatable, possibly adding
1420 fixups for word relocations in writable segments, so we can adjust
1423 ppc_elf_validate_fix (fixp, seg)
1427 if (fixp->fx_done || fixp->fx_pcrel)
1436 case SHILB_MRELOCATABLE:
1437 if (fixp->fx_r_type <= BFD_RELOC_UNUSED
1438 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF
1439 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
1440 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
1441 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
1442 && fixp->fx_r_type != BFD_RELOC_32_BASEREL
1443 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
1444 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
1445 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
1446 && strcmp (segment_name (seg), ".got2") != 0
1447 && strcmp (segment_name (seg), ".dtors") != 0
1448 && strcmp (segment_name (seg), ".ctors") != 0
1449 && strcmp (segment_name (seg), ".fixup") != 0
1450 && strcmp (segment_name (seg), ".stab") != 0
1451 && strcmp (segment_name (seg), ".gcc_except_table") != 0
1452 && strcmp (segment_name (seg), ".eh_frame") != 0
1453 && strcmp (segment_name (seg), ".ex_shared") != 0)
1455 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
1456 || fixp->fx_r_type != BFD_RELOC_CTOR)
1458 as_bad_where (fixp->fx_file, fixp->fx_line,
1459 _("Relocation cannot be done when using -mrelocatable"));
1465 #endif /* OBJ_ELF */
1470 * Summary of parse_toc_entry().
1472 * in: Input_line_pointer points to the '[' in one of:
1474 * [toc] [tocv] [toc32] [toc64]
1476 * Anything else is an error of one kind or another.
1479 * return value: success or failure
1480 * toc_kind: kind of toc reference
1481 * input_line_pointer:
1482 * success: first char after the ']'
1483 * failure: unchanged
1487 * [toc] - rv == success, toc_kind = default_toc
1488 * [tocv] - rv == success, toc_kind = data_in_toc
1489 * [toc32] - rv == success, toc_kind = must_be_32
1490 * [toc64] - rv == success, toc_kind = must_be_64
1494 enum toc_size_qualifier
1496 default_toc, /* The toc cell constructed should be the system default size */
1497 data_in_toc, /* This is a direct reference to a toc cell */
1498 must_be_32, /* The toc cell constructed must be 32 bits wide */
1499 must_be_64 /* The toc cell constructed must be 64 bits wide */
1503 parse_toc_entry(toc_kind)
1504 enum toc_size_qualifier *toc_kind;
1509 enum toc_size_qualifier t;
1511 /* save the input_line_pointer */
1512 start = input_line_pointer;
1514 /* skip over the '[' , and whitespace */
1515 ++input_line_pointer;
1518 /* find the spelling of the operand */
1519 toc_spec = input_line_pointer;
1520 c = get_symbol_end ();
1522 if (strcmp(toc_spec, "toc") == 0)
1526 else if (strcmp(toc_spec, "tocv") == 0)
1530 else if (strcmp(toc_spec, "toc32") == 0)
1534 else if (strcmp(toc_spec, "toc64") == 0)
1540 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
1541 *input_line_pointer = c; /* put back the delimiting char */
1542 input_line_pointer = start; /* reset input_line pointer */
1546 /* now find the ']' */
1547 *input_line_pointer = c; /* put back the delimiting char */
1549 SKIP_WHITESPACE (); /* leading whitespace could be there. */
1550 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
1554 as_bad (_("syntax error: expected `]', found `%c'"), c);
1555 input_line_pointer = start; /* reset input_line pointer */
1559 *toc_kind = t; /* set return value */
1565 /* We need to keep a list of fixups. We can't simply generate them as
1566 we go, because that would require us to first create the frag, and
1567 that would screw up references to ``.''. */
1573 bfd_reloc_code_real_type reloc;
1576 #define MAX_INSN_FIXUPS (5)
1578 /* This routine is called for each instruction to be assembled. */
1585 const struct powerpc_opcode *opcode;
1587 const unsigned char *opindex_ptr;
1591 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
1596 bfd_reloc_code_real_type reloc;
1599 /* Get the opcode. */
1600 for (s = str; *s != '\0' && ! isspace (*s); s++)
1605 /* Look up the opcode in the hash table. */
1606 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
1607 if (opcode == (const struct powerpc_opcode *) NULL)
1609 const struct powerpc_macro *macro;
1611 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
1612 if (macro == (const struct powerpc_macro *) NULL)
1613 as_bad (_("Unrecognized opcode: `%s'"), str);
1615 ppc_macro (s, macro);
1620 insn = opcode->opcode;
1623 while (isspace (*str))
1626 /* PowerPC operands are just expressions. The only real issue is
1627 that a few operand types are optional. All cases which might use
1628 an optional operand separate the operands only with commas (in
1629 some cases parentheses are used, as in ``lwz 1,0(1)'' but such
1630 cases never have optional operands). There is never more than
1631 one optional operand for an instruction. So, before we start
1632 seriously parsing the operands, we check to see if we have an
1633 optional operand, and, if we do, we count the number of commas to
1634 see whether the operand should be omitted. */
1636 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1638 const struct powerpc_operand *operand;
1640 operand = &powerpc_operands[*opindex_ptr];
1641 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
1643 unsigned int opcount;
1645 /* There is an optional operand. Count the number of
1646 commas in the input line. */
1653 while ((s = strchr (s, ',')) != (char *) NULL)
1660 /* If there are fewer operands in the line then are called
1661 for by the instruction, we want to skip the optional
1663 if (opcount < strlen (opcode->operands))
1670 /* Gather the operands. */
1674 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1676 const struct powerpc_operand *operand;
1682 if (next_opindex == 0)
1683 operand = &powerpc_operands[*opindex_ptr];
1686 operand = &powerpc_operands[next_opindex];
1692 /* If this is a fake operand, then we do not expect anything
1694 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
1696 insn = (*operand->insert) (insn, 0L, &errmsg);
1697 if (errmsg != (const char *) NULL)
1702 /* If this is an optional operand, and we are skipping it, just
1704 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
1707 if (operand->insert)
1709 insn = (*operand->insert) (insn, 0L, &errmsg);
1710 if (errmsg != (const char *) NULL)
1713 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
1714 next_opindex = *opindex_ptr + 1;
1718 /* Gather the operand. */
1719 hold = input_line_pointer;
1720 input_line_pointer = str;
1723 if (*input_line_pointer == '[')
1725 /* We are expecting something like the second argument here:
1727 lwz r4,[toc].GS.0.static_int(rtoc)
1728 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
1729 The argument following the `]' must be a symbol name, and the
1730 register must be the toc register: 'rtoc' or '2'
1732 The effect is to 0 as the displacement field
1733 in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
1734 the appropriate variation) reloc against it based on the symbol.
1735 The linker will build the toc, and insert the resolved toc offset.
1738 o The size of the toc entry is currently assumed to be
1739 32 bits. This should not be assumed to be a hard coded
1741 o In an effort to cope with a change from 32 to 64 bits,
1742 there are also toc entries that are specified to be
1743 either 32 or 64 bits:
1744 lwz r4,[toc32].GS.0.static_int(rtoc)
1745 lwz r4,[toc64].GS.0.static_int(rtoc)
1746 These demand toc entries of the specified size, and the
1747 instruction probably requires it.
1751 enum toc_size_qualifier toc_kind;
1752 bfd_reloc_code_real_type toc_reloc;
1754 /* go parse off the [tocXX] part */
1755 valid_toc = parse_toc_entry(&toc_kind);
1759 /* Note: message has already been issued. */
1760 /* FIXME: what sort of recovery should we do? */
1761 /* demand_rest_of_line(); return; ? */
1764 /* Now get the symbol following the ']' */
1770 /* In this case, we may not have seen the symbol yet, since */
1771 /* it is allowed to appear on a .extern or .globl or just be */
1772 /* a label in the .data section. */
1773 toc_reloc = BFD_RELOC_PPC_TOC16;
1776 /* 1. The symbol must be defined and either in the toc */
1777 /* section, or a global. */
1778 /* 2. The reloc generated must have the TOCDEFN flag set in */
1779 /* upper bit mess of the reloc type. */
1780 /* FIXME: It's a little confusing what the tocv qualifier can */
1781 /* be used for. At the very least, I've seen three */
1782 /* uses, only one of which I'm sure I can explain. */
1783 if (ex.X_op == O_symbol)
1785 assert (ex.X_add_symbol != NULL);
1786 if (symbol_get_bfdsym (ex.X_add_symbol)->section
1789 as_bad(_("[tocv] symbol is not a toc symbol"));
1793 toc_reloc = BFD_RELOC_PPC_TOC16;
1796 /* FIXME: these next two specifically specify 32/64 bit toc */
1797 /* entries. We don't support them today. Is this the */
1798 /* right way to say that? */
1799 toc_reloc = BFD_RELOC_UNUSED;
1800 as_bad (_("Unimplemented toc32 expression modifier"));
1803 /* FIXME: see above */
1804 toc_reloc = BFD_RELOC_UNUSED;
1805 as_bad (_("Unimplemented toc64 expression modifier"));
1809 _("Unexpected return value [%d] from parse_toc_entry!\n"),
1815 /* We need to generate a fixup for this expression. */
1816 if (fc >= MAX_INSN_FIXUPS)
1817 as_fatal (_("too many fixups"));
1819 fixups[fc].reloc = toc_reloc;
1820 fixups[fc].exp = ex;
1821 fixups[fc].opindex = *opindex_ptr;
1824 /* Ok. We've set up the fixup for the instruction. Now make it
1825 look like the constant 0 was found here */
1827 ex.X_op = O_constant;
1828 ex.X_add_number = 0;
1829 ex.X_add_symbol = NULL;
1830 ex.X_op_symbol = NULL;
1836 if (! register_name (&ex))
1838 if ((operand->flags & PPC_OPERAND_CR) != 0)
1845 str = input_line_pointer;
1846 input_line_pointer = hold;
1848 if (ex.X_op == O_illegal)
1849 as_bad (_("illegal operand"));
1850 else if (ex.X_op == O_absent)
1851 as_bad (_("missing operand"));
1852 else if (ex.X_op == O_register)
1854 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
1857 else if (ex.X_op == O_constant)
1860 /* Allow @HA, @L, @H on constants. */
1861 char *orig_str = str;
1863 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
1870 case BFD_RELOC_LO16:
1871 /* X_unsigned is the default, so if the user has done
1872 something which cleared it, we always produce a
1875 && (operand->flags & PPC_OPERAND_SIGNED) == 0)
1876 ex.X_add_number &= 0xffff;
1878 ex.X_add_number = (((ex.X_add_number & 0xffff)
1883 case BFD_RELOC_HI16:
1884 ex.X_add_number = (ex.X_add_number >> 16) & 0xffff;
1887 case BFD_RELOC_HI16_S:
1888 ex.X_add_number = (((ex.X_add_number >> 16) & 0xffff)
1889 + ((ex.X_add_number >> 15) & 1));
1893 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
1897 else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
1899 /* For the absoulte forms of branchs, convert the PC relative form back into
1901 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
1905 case BFD_RELOC_PPC_B26:
1906 reloc = BFD_RELOC_PPC_BA26;
1908 case BFD_RELOC_PPC_B16:
1909 reloc = BFD_RELOC_PPC_BA16;
1911 case BFD_RELOC_PPC_B16_BRTAKEN:
1912 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
1914 case BFD_RELOC_PPC_B16_BRNTAKEN:
1915 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
1922 /* We need to generate a fixup for this expression. */
1923 if (fc >= MAX_INSN_FIXUPS)
1924 as_fatal (_("too many fixups"));
1925 fixups[fc].exp = ex;
1926 fixups[fc].opindex = 0;
1927 fixups[fc].reloc = reloc;
1930 #endif /* OBJ_ELF */
1934 /* We need to generate a fixup for this expression. */
1935 if (fc >= MAX_INSN_FIXUPS)
1936 as_fatal (_("too many fixups"));
1937 fixups[fc].exp = ex;
1938 fixups[fc].opindex = *opindex_ptr;
1939 fixups[fc].reloc = BFD_RELOC_UNUSED;
1948 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
1956 /* The call to expression should have advanced str past any
1959 && (endc != ',' || *str != '\0'))
1961 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
1969 while (isspace (*str))
1973 as_bad (_("junk at end of line: `%s'"), str);
1975 /* Write out the instruction. */
1977 md_number_to_chars (f, insn, 4);
1979 /* Create any fixups. At this point we do not use a
1980 bfd_reloc_code_real_type, but instead just use the
1981 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1982 handle fixups for any operand type, although that is admittedly
1983 not a very exciting feature. We pick a BFD reloc type in
1985 for (i = 0; i < fc; i++)
1987 const struct powerpc_operand *operand;
1989 operand = &powerpc_operands[fixups[i].opindex];
1990 if (fixups[i].reloc != BFD_RELOC_UNUSED)
1992 reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
2000 size = bfd_get_reloc_size (reloc_howto);
2001 offset = target_big_endian ? (4 - size) : 0;
2003 if (size < 1 || size > 4)
2006 fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, size,
2007 &fixups[i].exp, reloc_howto->pc_relative,
2010 /* Turn off complaints that the addend is too large for things like
2012 switch (fixups[i].reloc)
2014 case BFD_RELOC_16_GOTOFF:
2015 case BFD_RELOC_PPC_TOC16:
2016 case BFD_RELOC_LO16:
2017 case BFD_RELOC_HI16:
2018 case BFD_RELOC_HI16_S:
2019 fixP->fx_no_overflow = 1;
2026 fix_new_exp (frag_now, f - frag_now->fr_literal, 4,
2028 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
2029 ((bfd_reloc_code_real_type)
2030 (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
2034 /* Handle a macro. Gather all the operands, transform them as
2035 described by the macro, and call md_assemble recursively. All the
2036 operands are separated by commas; we don't accept parentheses
2037 around operands here. */
2040 ppc_macro (str, macro)
2042 const struct powerpc_macro *macro;
2053 /* Gather the users operands into the operands array. */
2058 if (count >= sizeof operands / sizeof operands[0])
2060 operands[count++] = s;
2061 s = strchr (s, ',');
2062 if (s == (char *) NULL)
2067 if (count != macro->operands)
2069 as_bad (_("wrong number of operands"));
2073 /* Work out how large the string must be (the size is unbounded
2074 because it includes user input). */
2076 format = macro->format;
2077 while (*format != '\0')
2086 arg = strtol (format + 1, &send, 10);
2087 know (send != format && arg >= 0 && arg < count);
2088 len += strlen (operands[arg]);
2093 /* Put the string together. */
2094 complete = s = (char *) alloca (len + 1);
2095 format = macro->format;
2096 while (*format != '\0')
2102 arg = strtol (format + 1, &send, 10);
2103 strcpy (s, operands[arg]);
2110 /* Assemble the constructed instruction. */
2111 md_assemble (complete);
2115 /* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED */
2118 ppc_section_letter (letter, ptr_msg)
2125 *ptr_msg = _("Bad .section directive: want a,w,x,e in string");
2130 ppc_section_word (str, len)
2134 if (len == 7 && strncmp (str, "exclude", 7) == 0)
2141 ppc_section_type (str, len)
2145 if (len == 7 && strncmp (str, "ordered", 7) == 0)
2152 ppc_section_flags (flags, attr, type)
2157 if (type == SHT_ORDERED)
2158 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
2160 if (attr & SHF_EXCLUDE)
2161 flags |= SEC_EXCLUDE;
2165 #endif /* OBJ_ELF */
2168 /* Pseudo-op handling. */
2170 /* The .byte pseudo-op. This is similar to the normal .byte
2171 pseudo-op, but it can also take a single ASCII string. */
2177 if (*input_line_pointer != '\"')
2183 /* Gather characters. A real double quote is doubled. Unusual
2184 characters are not permitted. */
2185 ++input_line_pointer;
2190 c = *input_line_pointer++;
2194 if (*input_line_pointer != '\"')
2196 ++input_line_pointer;
2199 FRAG_APPEND_1_CHAR (c);
2202 demand_empty_rest_of_line ();
2207 /* XCOFF specific pseudo-op handling. */
2209 /* This is set if we are creating a .stabx symbol, since we don't want
2210 to handle symbol suffixes for such symbols. */
2211 static boolean ppc_stab_symbol;
2213 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
2214 symbols in the .bss segment as though they were local common
2215 symbols, and uses a different smclas. */
2221 asection *current_seg = now_seg;
2222 subsegT current_subseg = now_subseg;
2228 symbolS *lcomm_sym = NULL;
2232 name = input_line_pointer;
2233 endc = get_symbol_end ();
2234 end_name = input_line_pointer;
2237 if (*input_line_pointer != ',')
2239 as_bad (_("missing size"));
2240 ignore_rest_of_line ();
2243 ++input_line_pointer;
2245 size = get_absolute_expression ();
2248 as_bad (_("negative size"));
2249 ignore_rest_of_line ();
2255 /* The third argument to .comm is the alignment. */
2256 if (*input_line_pointer != ',')
2260 ++input_line_pointer;
2261 align = get_absolute_expression ();
2264 as_warn (_("ignoring bad alignment"));
2283 /* The third argument to .lcomm appears to be the real local
2284 common symbol to create. References to the symbol named in
2285 the first argument are turned into references to the third
2287 if (*input_line_pointer != ',')
2289 as_bad (_("missing real symbol name"));
2290 ignore_rest_of_line ();
2293 ++input_line_pointer;
2295 lcomm_name = input_line_pointer;
2296 lcomm_endc = get_symbol_end ();
2298 lcomm_sym = symbol_find_or_make (lcomm_name);
2300 *input_line_pointer = lcomm_endc;
2304 sym = symbol_find_or_make (name);
2307 if (S_IS_DEFINED (sym)
2308 || S_GET_VALUE (sym) != 0)
2310 as_bad (_("attempt to redefine symbol"));
2311 ignore_rest_of_line ();
2315 record_alignment (bss_section, align);
2318 || ! S_IS_DEFINED (lcomm_sym))
2327 S_SET_EXTERNAL (sym);
2331 symbol_get_tc (lcomm_sym)->output = 1;
2332 def_sym = lcomm_sym;
2336 subseg_set (bss_section, 1);
2337 frag_align (align, 0, 0);
2339 symbol_set_frag (def_sym, frag_now);
2340 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
2341 def_size, (char *) NULL);
2343 S_SET_SEGMENT (def_sym, bss_section);
2344 symbol_get_tc (def_sym)->align = align;
2348 /* Align the size of lcomm_sym. */
2349 symbol_get_frag (lcomm_sym)->fr_offset =
2350 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
2351 &~ ((1 << align) - 1));
2352 if (align > symbol_get_tc (lcomm_sym)->align)
2353 symbol_get_tc (lcomm_sym)->align = align;
2358 /* Make sym an offset from lcomm_sym. */
2359 S_SET_SEGMENT (sym, bss_section);
2360 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
2361 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
2362 symbol_get_frag (lcomm_sym)->fr_offset += size;
2365 subseg_set (current_seg, current_subseg);
2367 demand_empty_rest_of_line ();
2370 /* The .csect pseudo-op. This switches us into a different
2371 subsegment. The first argument is a symbol whose value is the
2372 start of the .csect. In COFF, csect symbols get special aux
2373 entries defined by the x_csect field of union internal_auxent. The
2374 optional second argument is the alignment (the default is 2). */
2384 name = input_line_pointer;
2385 endc = get_symbol_end ();
2387 sym = symbol_find_or_make (name);
2389 *input_line_pointer = endc;
2391 if (S_GET_NAME (sym)[0] == '\0')
2393 /* An unnamed csect is assumed to be [PR]. */
2394 symbol_get_tc (sym)->class = XMC_PR;
2397 ppc_change_csect (sym);
2399 if (*input_line_pointer == ',')
2401 ++input_line_pointer;
2402 symbol_get_tc (sym)->align = get_absolute_expression ();
2405 demand_empty_rest_of_line ();
2408 /* Change to a different csect. */
2411 ppc_change_csect (sym)
2414 if (S_IS_DEFINED (sym))
2415 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
2423 /* This is a new csect. We need to look at the symbol class to
2424 figure out whether it should go in the text section or the
2427 switch (symbol_get_tc (sym)->class)
2437 S_SET_SEGMENT (sym, text_section);
2438 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
2439 ++ppc_text_subsegment;
2440 list_ptr = &ppc_text_csects;
2449 if (ppc_toc_csect != NULL
2450 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
2451 == ppc_data_subsegment))
2453 S_SET_SEGMENT (sym, data_section);
2454 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
2455 ++ppc_data_subsegment;
2456 list_ptr = &ppc_data_csects;
2462 /* We set the obstack chunk size to a small value before
2463 changing subsegments, so that we don't use a lot of memory
2464 space for what may be a small section. */
2465 hold_chunksize = chunksize;
2468 subseg_new (segment_name (S_GET_SEGMENT (sym)),
2469 symbol_get_tc (sym)->subseg);
2471 chunksize = hold_chunksize;
2474 ppc_after_toc_frag = frag_now;
2476 symbol_set_frag (sym, frag_now);
2477 S_SET_VALUE (sym, (valueT) frag_now_fix ());
2479 symbol_get_tc (sym)->align = 2;
2480 symbol_get_tc (sym)->output = 1;
2481 symbol_get_tc (sym)->within = sym;
2483 for (list = *list_ptr;
2484 symbol_get_tc (list)->next != (symbolS *) NULL;
2485 list = symbol_get_tc (list)->next)
2487 symbol_get_tc (list)->next = sym;
2489 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
2490 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
2494 ppc_current_csect = sym;
2497 /* This function handles the .text and .data pseudo-ops. These
2498 pseudo-ops aren't really used by XCOFF; we implement them for the
2499 convenience of people who aren't used to XCOFF. */
2510 else if (type == 'd')
2515 sym = symbol_find_or_make (name);
2517 ppc_change_csect (sym);
2519 demand_empty_rest_of_line ();
2522 /* This function handles the .section pseudo-op. This is mostly to
2523 give an error, since XCOFF only supports .text, .data and .bss, but
2524 we do permit the user to name the text or data section. */
2527 ppc_named_section (ignore)
2531 const char *real_name;
2535 user_name = input_line_pointer;
2536 c = get_symbol_end ();
2538 if (strcmp (user_name, ".text") == 0)
2539 real_name = ".text[PR]";
2540 else if (strcmp (user_name, ".data") == 0)
2541 real_name = ".data[RW]";
2544 as_bad (_("The XCOFF file format does not support arbitrary sections"));
2545 *input_line_pointer = c;
2546 ignore_rest_of_line ();
2550 *input_line_pointer = c;
2552 sym = symbol_find_or_make (real_name);
2554 ppc_change_csect (sym);
2556 demand_empty_rest_of_line ();
2559 /* The .extern pseudo-op. We create an undefined symbol. */
2568 name = input_line_pointer;
2569 endc = get_symbol_end ();
2571 (void) symbol_find_or_make (name);
2573 *input_line_pointer = endc;
2575 demand_empty_rest_of_line ();
2578 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
2588 name = input_line_pointer;
2589 endc = get_symbol_end ();
2591 sym = symbol_find_or_make (name);
2593 *input_line_pointer = endc;
2595 symbol_get_tc (sym)->output = 1;
2597 demand_empty_rest_of_line ();
2600 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
2601 although I don't know why it bothers. */
2612 name = input_line_pointer;
2613 endc = get_symbol_end ();
2615 sym = symbol_find_or_make (name);
2617 *input_line_pointer = endc;
2619 if (*input_line_pointer != ',')
2621 as_bad (_("missing rename string"));
2622 ignore_rest_of_line ();
2625 ++input_line_pointer;
2627 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
2629 demand_empty_rest_of_line ();
2632 /* The .stabx pseudo-op. This is similar to a normal .stabs
2633 pseudo-op, but slightly different. A sample is
2634 .stabx "main:F-1",.main,142,0
2635 The first argument is the symbol name to create. The second is the
2636 value, and the third is the storage class. The fourth seems to be
2637 always zero, and I am assuming it is the type. */
2648 name = demand_copy_C_string (&len);
2650 if (*input_line_pointer != ',')
2652 as_bad (_("missing value"));
2655 ++input_line_pointer;
2657 ppc_stab_symbol = true;
2658 sym = symbol_make (name);
2659 ppc_stab_symbol = false;
2661 symbol_get_tc (sym)->real_name = name;
2663 (void) expression (&exp);
2670 as_bad (_("illegal .stabx expression; zero assumed"));
2671 exp.X_add_number = 0;
2674 S_SET_VALUE (sym, (valueT) exp.X_add_number);
2675 symbol_set_frag (sym, &zero_address_frag);
2679 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
2680 symbol_set_value_expression (sym, &exp);
2684 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
2685 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
2690 /* The value is some complex expression. This will probably
2691 fail at some later point, but this is probably the right
2692 thing to do here. */
2693 symbol_set_value_expression (sym, &exp);
2697 S_SET_SEGMENT (sym, ppc_coff_debug_section);
2698 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
2700 if (*input_line_pointer != ',')
2702 as_bad (_("missing class"));
2705 ++input_line_pointer;
2707 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
2709 if (*input_line_pointer != ',')
2711 as_bad (_("missing type"));
2714 ++input_line_pointer;
2716 S_SET_DATA_TYPE (sym, get_absolute_expression ());
2718 symbol_get_tc (sym)->output = 1;
2720 if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
2721 symbol_get_tc (sym)->within = ppc_current_block;
2723 if (exp.X_op != O_symbol
2724 || ! S_IS_EXTERNAL (exp.X_add_symbol)
2725 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
2726 ppc_frob_label (sym);
2729 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
2730 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
2731 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
2732 symbol_get_tc (ppc_current_csect)->within = sym;
2735 demand_empty_rest_of_line ();
2738 /* The .function pseudo-op. This takes several arguments. The first
2739 argument seems to be the external name of the symbol. The second
2740 argment seems to be the label for the start of the function. gcc
2741 uses the same name for both. I have no idea what the third and
2742 fourth arguments are meant to be. The optional fifth argument is
2743 an expression for the size of the function. In COFF this symbol
2744 gets an aux entry like that used for a csect. */
2747 ppc_function (ignore)
2756 name = input_line_pointer;
2757 endc = get_symbol_end ();
2759 /* Ignore any [PR] suffix. */
2760 name = ppc_canonicalize_symbol_name (name);
2761 s = strchr (name, '[');
2762 if (s != (char *) NULL
2763 && strcmp (s + 1, "PR]") == 0)
2766 ext_sym = symbol_find_or_make (name);
2768 *input_line_pointer = endc;
2770 if (*input_line_pointer != ',')
2772 as_bad (_("missing symbol name"));
2773 ignore_rest_of_line ();
2776 ++input_line_pointer;
2778 name = input_line_pointer;
2779 endc = get_symbol_end ();
2781 lab_sym = symbol_find_or_make (name);
2783 *input_line_pointer = endc;
2785 if (ext_sym != lab_sym)
2789 exp.X_op = O_symbol;
2790 exp.X_add_symbol = lab_sym;
2791 exp.X_op_symbol = NULL;
2792 exp.X_add_number = 0;
2794 symbol_set_value_expression (ext_sym, &exp);
2797 if (symbol_get_tc (ext_sym)->class == -1)
2798 symbol_get_tc (ext_sym)->class = XMC_PR;
2799 symbol_get_tc (ext_sym)->output = 1;
2801 if (*input_line_pointer == ',')
2805 /* Ignore the third argument. */
2806 ++input_line_pointer;
2807 expression (&ignore);
2808 if (*input_line_pointer == ',')
2810 /* Ignore the fourth argument. */
2811 ++input_line_pointer;
2812 expression (&ignore);
2813 if (*input_line_pointer == ',')
2815 /* The fifth argument is the function size. */
2816 ++input_line_pointer;
2817 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
2820 &zero_address_frag);
2821 pseudo_set (symbol_get_tc (ext_sym)->size);
2826 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
2827 SF_SET_FUNCTION (ext_sym);
2828 SF_SET_PROCESS (ext_sym);
2829 coff_add_linesym (ext_sym);
2831 demand_empty_rest_of_line ();
2834 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
2843 sym = symbol_make (".bf");
2844 S_SET_SEGMENT (sym, text_section);
2845 symbol_set_frag (sym, frag_now);
2846 S_SET_VALUE (sym, frag_now_fix ());
2847 S_SET_STORAGE_CLASS (sym, C_FCN);
2849 coff_line_base = get_absolute_expression ();
2851 S_SET_NUMBER_AUXILIARY (sym, 1);
2852 SA_SET_SYM_LNNO (sym, coff_line_base);
2854 symbol_get_tc (sym)->output = 1;
2856 ppc_frob_label (sym);
2858 demand_empty_rest_of_line ();
2861 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
2862 ".ef", except that the line number is absolute, not relative to the
2863 most recent ".bf" symbol. */
2871 sym = symbol_make (".ef");
2872 S_SET_SEGMENT (sym, text_section);
2873 symbol_set_frag (sym, frag_now);
2874 S_SET_VALUE (sym, frag_now_fix ());
2875 S_SET_STORAGE_CLASS (sym, C_FCN);
2876 S_SET_NUMBER_AUXILIARY (sym, 1);
2877 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
2878 symbol_get_tc (sym)->output = 1;
2880 ppc_frob_label (sym);
2882 demand_empty_rest_of_line ();
2885 /* The .bi and .ei pseudo-ops. These take a string argument and
2886 generates a C_BINCL or C_EINCL symbol, which goes at the start of
2893 static symbolS *last_biei;
2900 name = demand_copy_C_string (&len);
2902 /* The value of these symbols is actually file offset. Here we set
2903 the value to the index into the line number entries. In
2904 ppc_frob_symbols we set the fix_line field, which will cause BFD
2905 to do the right thing. */
2907 sym = symbol_make (name);
2908 /* obj-coff.c currently only handles line numbers correctly in the
2910 S_SET_SEGMENT (sym, text_section);
2911 S_SET_VALUE (sym, coff_n_line_nos);
2912 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
2914 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
2915 symbol_get_tc (sym)->output = 1;
2917 for (look = last_biei ? last_biei : symbol_rootP;
2918 (look != (symbolS *) NULL
2919 && (S_GET_STORAGE_CLASS (look) == C_FILE
2920 || S_GET_STORAGE_CLASS (look) == C_BINCL
2921 || S_GET_STORAGE_CLASS (look) == C_EINCL));
2922 look = symbol_next (look))
2924 if (look != (symbolS *) NULL)
2926 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
2927 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
2931 demand_empty_rest_of_line ();
2934 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
2935 There is one argument, which is a csect symbol. The value of the
2936 .bs symbol is the index of this csect symbol. */
2947 if (ppc_current_block != NULL)
2948 as_bad (_("nested .bs blocks"));
2950 name = input_line_pointer;
2951 endc = get_symbol_end ();
2953 csect = symbol_find_or_make (name);
2955 *input_line_pointer = endc;
2957 sym = symbol_make (".bs");
2958 S_SET_SEGMENT (sym, now_seg);
2959 S_SET_STORAGE_CLASS (sym, C_BSTAT);
2960 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
2961 symbol_get_tc (sym)->output = 1;
2963 symbol_get_tc (sym)->within = csect;
2965 ppc_frob_label (sym);
2967 ppc_current_block = sym;
2969 demand_empty_rest_of_line ();
2972 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
2980 if (ppc_current_block == NULL)
2981 as_bad (_(".es without preceding .bs"));
2983 sym = symbol_make (".es");
2984 S_SET_SEGMENT (sym, now_seg);
2985 S_SET_STORAGE_CLASS (sym, C_ESTAT);
2986 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
2987 symbol_get_tc (sym)->output = 1;
2989 ppc_frob_label (sym);
2991 ppc_current_block = NULL;
2993 demand_empty_rest_of_line ();
2996 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
3005 sym = symbol_make (".bb");
3006 S_SET_SEGMENT (sym, text_section);
3007 symbol_set_frag (sym, frag_now);
3008 S_SET_VALUE (sym, frag_now_fix ());
3009 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3011 S_SET_NUMBER_AUXILIARY (sym, 1);
3012 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3014 symbol_get_tc (sym)->output = 1;
3016 SF_SET_PROCESS (sym);
3018 ppc_frob_label (sym);
3020 demand_empty_rest_of_line ();
3023 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
3032 sym = symbol_make (".eb");
3033 S_SET_SEGMENT (sym, text_section);
3034 symbol_set_frag (sym, frag_now);
3035 S_SET_VALUE (sym, frag_now_fix ());
3036 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3037 S_SET_NUMBER_AUXILIARY (sym, 1);
3038 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3039 symbol_get_tc (sym)->output = 1;
3041 SF_SET_PROCESS (sym);
3043 ppc_frob_label (sym);
3045 demand_empty_rest_of_line ();
3048 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
3059 name = demand_copy_C_string (&len);
3060 sym = symbol_make (name);
3061 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3062 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3063 S_SET_STORAGE_CLASS (sym, C_BCOMM);
3064 S_SET_VALUE (sym, 0);
3065 symbol_get_tc (sym)->output = 1;
3067 ppc_frob_label (sym);
3069 demand_empty_rest_of_line ();
3072 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
3080 sym = symbol_make (".ec");
3081 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3082 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3083 S_SET_STORAGE_CLASS (sym, C_ECOMM);
3084 S_SET_VALUE (sym, 0);
3085 symbol_get_tc (sym)->output = 1;
3087 ppc_frob_label (sym);
3089 demand_empty_rest_of_line ();
3092 /* The .toc pseudo-op. Switch to the .toc subsegment. */
3098 if (ppc_toc_csect != (symbolS *) NULL)
3099 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
3106 subseg = ppc_data_subsegment;
3107 ++ppc_data_subsegment;
3109 subseg_new (segment_name (data_section), subseg);
3110 ppc_toc_frag = frag_now;
3112 sym = symbol_find_or_make ("TOC[TC0]");
3113 symbol_set_frag (sym, frag_now);
3114 S_SET_SEGMENT (sym, data_section);
3115 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3116 symbol_get_tc (sym)->subseg = subseg;
3117 symbol_get_tc (sym)->output = 1;
3118 symbol_get_tc (sym)->within = sym;
3120 ppc_toc_csect = sym;
3122 for (list = ppc_data_csects;
3123 symbol_get_tc (list)->next != (symbolS *) NULL;
3124 list = symbol_get_tc (list)->next)
3126 symbol_get_tc (list)->next = sym;
3128 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3129 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3133 ppc_current_csect = ppc_toc_csect;
3135 demand_empty_rest_of_line ();
3138 /* The AIX assembler automatically aligns the operands of a .long or
3139 .short pseudo-op, and we want to be compatible. */
3142 ppc_xcoff_cons (log_size)
3145 frag_align (log_size, 0, 0);
3146 record_alignment (now_seg, log_size);
3147 cons (1 << log_size);
3157 (void) expression (&exp);
3159 if (exp.X_op != O_constant)
3161 as_bad (_("non-constant byte count"));
3165 byte_count = exp.X_add_number;
3167 if (*input_line_pointer != ',')
3169 as_bad (_("missing value"));
3173 ++input_line_pointer;
3177 #endif /* OBJ_XCOFF */
3179 /* The .tc pseudo-op. This is used when generating either XCOFF or
3180 ELF. This takes two or more arguments.
3182 When generating XCOFF output, the first argument is the name to
3183 give to this location in the toc; this will be a symbol with class
3184 TC. The rest of the arguments are 4 byte values to actually put at
3185 this location in the TOC; often there is just one more argument, a
3186 relocateable symbol reference.
3188 When not generating XCOFF output, the arguments are the same, but
3189 the first argument is simply ignored. */
3197 /* Define the TOC symbol name. */
3203 if (ppc_toc_csect == (symbolS *) NULL
3204 || ppc_toc_csect != ppc_current_csect)
3206 as_bad (_(".tc not in .toc section"));
3207 ignore_rest_of_line ();
3211 name = input_line_pointer;
3212 endc = get_symbol_end ();
3214 sym = symbol_find_or_make (name);
3216 *input_line_pointer = endc;
3218 if (S_IS_DEFINED (sym))
3222 label = symbol_get_tc (ppc_current_csect)->within;
3223 if (symbol_get_tc (label)->class != XMC_TC0)
3225 as_bad (_(".tc with no label"));
3226 ignore_rest_of_line ();
3230 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
3231 symbol_set_frag (label, symbol_get_frag (sym));
3232 S_SET_VALUE (label, S_GET_VALUE (sym));
3234 while (! is_end_of_line[(unsigned char) *input_line_pointer])
3235 ++input_line_pointer;
3240 S_SET_SEGMENT (sym, now_seg);
3241 symbol_set_frag (sym, frag_now);
3242 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3243 symbol_get_tc (sym)->class = XMC_TC;
3244 symbol_get_tc (sym)->output = 1;
3246 ppc_frob_label (sym);
3249 #else /* ! defined (OBJ_XCOFF) */
3251 /* Skip the TOC symbol name. */
3252 while (is_part_of_name (*input_line_pointer)
3253 || *input_line_pointer == '['
3254 || *input_line_pointer == ']'
3255 || *input_line_pointer == '{'
3256 || *input_line_pointer == '}')
3257 ++input_line_pointer;
3259 /* Align to a four byte boundary. */
3260 frag_align (2, 0, 0);
3261 record_alignment (now_seg, 2);
3263 #endif /* ! defined (OBJ_XCOFF) */
3265 if (*input_line_pointer != ',')
3266 demand_empty_rest_of_line ();
3269 ++input_line_pointer;
3276 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */
3278 /* Set the current section. */
3280 ppc_set_current_section (new)
3283 ppc_previous_section = ppc_current_section;
3284 ppc_current_section = new;
3287 /* pseudo-op: .previous
3288 behaviour: toggles the current section with the previous section.
3290 warnings: "No previous section"
3293 ppc_previous(ignore)
3298 if (ppc_previous_section == NULL)
3300 as_warn(_("No previous section to return to. Directive ignored."));
3304 subseg_set(ppc_previous_section, 0);
3306 ppc_set_current_section(ppc_previous_section);
3309 /* pseudo-op: .pdata
3310 behaviour: predefined read only data section
3314 initial: .section .pdata "adr3"
3315 a - don't know -- maybe a misprint
3316 d - initialized data
3318 3 - double word aligned (that would be 4 byte boundary)
3321 Tag index tables (also known as the function table) for exception
3322 handling, debugging, etc.
3329 if (pdata_section == 0)
3331 pdata_section = subseg_new (".pdata", 0);
3333 bfd_set_section_flags (stdoutput, pdata_section,
3334 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3335 | SEC_READONLY | SEC_DATA ));
3337 bfd_set_section_alignment (stdoutput, pdata_section, 2);
3341 pdata_section = subseg_new(".pdata", 0);
3343 ppc_set_current_section(pdata_section);
3346 /* pseudo-op: .ydata
3347 behaviour: predefined read only data section
3351 initial: .section .ydata "drw3"
3352 a - don't know -- maybe a misprint
3353 d - initialized data
3355 3 - double word aligned (that would be 4 byte boundary)
3357 Tag tables (also known as the scope table) for exception handling,
3364 if (ydata_section == 0)
3366 ydata_section = subseg_new (".ydata", 0);
3367 bfd_set_section_flags (stdoutput, ydata_section,
3368 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3369 | SEC_READONLY | SEC_DATA ));
3371 bfd_set_section_alignment (stdoutput, ydata_section, 3);
3375 ydata_section = subseg_new (".ydata", 0);
3377 ppc_set_current_section(ydata_section);
3380 /* pseudo-op: .reldata
3381 behaviour: predefined read write data section
3382 double word aligned (4-byte)
3383 FIXME: relocation is applied to it
3384 FIXME: what's the difference between this and .data?
3387 initial: .section .reldata "drw3"
3388 d - initialized data
3391 3 - double word aligned (that would be 8 byte boundary)
3394 Like .data, but intended to hold data subject to relocation, such as
3395 function descriptors, etc.
3401 if (reldata_section == 0)
3403 reldata_section = subseg_new (".reldata", 0);
3405 bfd_set_section_flags (stdoutput, reldata_section,
3406 ( SEC_ALLOC | SEC_LOAD | SEC_RELOC
3409 bfd_set_section_alignment (stdoutput, reldata_section, 2);
3413 reldata_section = subseg_new (".reldata", 0);
3415 ppc_set_current_section(reldata_section);
3418 /* pseudo-op: .rdata
3419 behaviour: predefined read only data section
3423 initial: .section .rdata "dr3"
3424 d - initialized data
3426 3 - double word aligned (that would be 4 byte boundary)
3432 if (rdata_section == 0)
3434 rdata_section = subseg_new (".rdata", 0);
3435 bfd_set_section_flags (stdoutput, rdata_section,
3436 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3437 | SEC_READONLY | SEC_DATA ));
3439 bfd_set_section_alignment (stdoutput, rdata_section, 2);
3443 rdata_section = subseg_new (".rdata", 0);
3445 ppc_set_current_section(rdata_section);
3448 /* pseudo-op: .ualong
3449 behaviour: much like .int, with the exception that no alignment is
3451 FIXME: test the alignment statement
3463 /* pseudo-op: .znop <symbol name>
3464 behaviour: Issue a nop instruction
3465 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
3466 the supplied symbol name.
3468 warnings: Missing symbol name
3475 const struct powerpc_opcode *opcode;
3481 /* Strip out the symbol name */
3489 symbol_name = input_line_pointer;
3490 c = get_symbol_end ();
3492 name = xmalloc (input_line_pointer - symbol_name + 1);
3493 strcpy (name, symbol_name);
3495 sym = symbol_find_or_make (name);
3497 *input_line_pointer = c;
3501 /* Look up the opcode in the hash table. */
3502 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
3504 /* stick in the nop */
3505 insn = opcode->opcode;
3507 /* Write out the instruction. */
3509 md_number_to_chars (f, insn, 4);
3511 f - frag_now->fr_literal,
3516 BFD_RELOC_16_GOT_PCREL);
3529 register char *name;
3533 register symbolS *symbolP;
3536 name = input_line_pointer;
3537 c = get_symbol_end ();
3539 /* just after name is now '\0' */
3540 p = input_line_pointer;
3543 if (*input_line_pointer != ',')
3545 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
3546 ignore_rest_of_line ();
3550 input_line_pointer++; /* skip ',' */
3551 if ((temp = get_absolute_expression ()) < 0)
3553 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
3554 ignore_rest_of_line ();
3560 /* The third argument to .comm is the alignment. */
3561 if (*input_line_pointer != ',')
3565 ++input_line_pointer;
3566 align = get_absolute_expression ();
3569 as_warn (_("ignoring bad alignment"));
3576 symbolP = symbol_find_or_make (name);
3579 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
3581 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
3582 S_GET_NAME (symbolP));
3583 ignore_rest_of_line ();
3587 if (S_GET_VALUE (symbolP))
3589 if (S_GET_VALUE (symbolP) != (valueT) temp)
3590 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
3591 S_GET_NAME (symbolP),
3592 (long) S_GET_VALUE (symbolP),
3597 S_SET_VALUE (symbolP, (valueT) temp);
3598 S_SET_EXTERNAL (symbolP);
3601 demand_empty_rest_of_line ();
3605 * implement the .section pseudo op:
3606 * .section name {, "flags"}
3608 * | +--- optional flags: 'b' for bss
3610 * +-- section name 'l' for lib
3614 * 'd' (apparently m88k for data)
3616 * But if the argument is not a quoted string, treat it as a
3617 * subsegment number.
3619 * FIXME: this is a copy of the section processing from obj-coff.c, with
3620 * additions/changes for the moto-pas assembler support. There are three
3623 * FIXME: I just noticed this. This doesn't work at all really. It it
3624 * setting bits that bfd probably neither understands or uses. The
3625 * correct approach (?) will have to incorporate extra fields attached
3626 * to the section to hold the system specific stuff. (krk)
3629 * 'a' - unknown - referred to in documentation, but no definition supplied
3630 * 'c' - section has code
3631 * 'd' - section has initialized data
3632 * 'u' - section has uninitialized data
3633 * 'i' - section contains directives (info)
3634 * 'n' - section can be discarded
3635 * 'R' - remove section at link time
3637 * Section Protection:
3638 * 'r' - section is readable
3639 * 'w' - section is writeable
3640 * 'x' - section is executable
3641 * 's' - section is sharable
3643 * Section Alignment:
3644 * '0' - align to byte boundary
3645 * '1' - align to halfword undary
3646 * '2' - align to word boundary
3647 * '3' - align to doubleword boundary
3648 * '4' - align to quadword boundary
3649 * '5' - align to 32 byte boundary
3650 * '6' - align to 64 byte boundary
3655 ppc_pe_section (ignore)
3658 /* Strip out the section name */
3667 section_name = input_line_pointer;
3668 c = get_symbol_end ();
3670 name = xmalloc (input_line_pointer - section_name + 1);
3671 strcpy (name, section_name);
3673 *input_line_pointer = c;
3678 flags = SEC_NO_FLAGS;
3680 if (strcmp (name, ".idata$2") == 0)
3684 else if (strcmp (name, ".idata$3") == 0)
3688 else if (strcmp (name, ".idata$4") == 0)
3692 else if (strcmp (name, ".idata$5") == 0)
3696 else if (strcmp (name, ".idata$6") == 0)
3701 align = 4; /* default alignment to 16 byte boundary */
3703 if (*input_line_pointer == ',')
3705 ++input_line_pointer;
3707 if (*input_line_pointer != '"')
3708 exp = get_absolute_expression ();
3711 ++input_line_pointer;
3712 while (*input_line_pointer != '"'
3713 && ! is_end_of_line[(unsigned char) *input_line_pointer])
3715 switch (*input_line_pointer)
3717 /* Section Contents */
3718 case 'a': /* unknown */
3719 as_bad (_("Unsupported section attribute -- 'a'"));
3721 case 'c': /* code section */
3724 case 'd': /* section has initialized data */
3727 case 'u': /* section has uninitialized data */
3728 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
3732 case 'i': /* section contains directives (info) */
3733 /* FIXME: This is IMAGE_SCN_LNK_INFO
3735 flags |= SEC_HAS_CONTENTS;
3737 case 'n': /* section can be discarded */
3740 case 'R': /* Remove section at link time */
3741 flags |= SEC_NEVER_LOAD;
3744 /* Section Protection */
3745 case 'r': /* section is readable */
3746 flags |= IMAGE_SCN_MEM_READ;
3748 case 'w': /* section is writeable */
3749 flags |= IMAGE_SCN_MEM_WRITE;
3751 case 'x': /* section is executable */
3752 flags |= IMAGE_SCN_MEM_EXECUTE;
3754 case 's': /* section is sharable */
3755 flags |= IMAGE_SCN_MEM_SHARED;
3758 /* Section Alignment */
3759 case '0': /* align to byte boundary */
3760 flags |= IMAGE_SCN_ALIGN_1BYTES;
3763 case '1': /* align to halfword boundary */
3764 flags |= IMAGE_SCN_ALIGN_2BYTES;
3767 case '2': /* align to word boundary */
3768 flags |= IMAGE_SCN_ALIGN_4BYTES;
3771 case '3': /* align to doubleword boundary */
3772 flags |= IMAGE_SCN_ALIGN_8BYTES;
3775 case '4': /* align to quadword boundary */
3776 flags |= IMAGE_SCN_ALIGN_16BYTES;
3779 case '5': /* align to 32 byte boundary */
3780 flags |= IMAGE_SCN_ALIGN_32BYTES;
3783 case '6': /* align to 64 byte boundary */
3784 flags |= IMAGE_SCN_ALIGN_64BYTES;
3789 as_bad(_("unknown section attribute '%c'"),
3790 *input_line_pointer);
3793 ++input_line_pointer;
3795 if (*input_line_pointer == '"')
3796 ++input_line_pointer;
3800 sec = subseg_new (name, (subsegT) exp);
3802 ppc_set_current_section(sec);
3804 if (flags != SEC_NO_FLAGS)
3806 if (! bfd_set_section_flags (stdoutput, sec, flags))
3807 as_bad (_("error setting flags for \"%s\": %s"),
3808 bfd_section_name (stdoutput, sec),
3809 bfd_errmsg (bfd_get_error ()));
3812 bfd_set_section_alignment(stdoutput, sec, align);
3817 ppc_pe_function (ignore)
3824 name = input_line_pointer;
3825 endc = get_symbol_end ();
3827 ext_sym = symbol_find_or_make (name);
3829 *input_line_pointer = endc;
3831 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
3832 SF_SET_FUNCTION (ext_sym);
3833 SF_SET_PROCESS (ext_sym);
3834 coff_add_linesym (ext_sym);
3836 demand_empty_rest_of_line ();
3840 ppc_pe_tocd (ignore)
3843 if (tocdata_section == 0)
3845 tocdata_section = subseg_new (".tocd", 0);
3846 /* FIXME: section flags won't work */
3847 bfd_set_section_flags (stdoutput, tocdata_section,
3848 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3849 | SEC_READONLY | SEC_DATA ));
3851 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
3855 rdata_section = subseg_new (".tocd", 0);
3858 ppc_set_current_section(tocdata_section);
3860 demand_empty_rest_of_line ();
3863 /* Don't adjust TOC relocs to use the section symbol. */
3866 ppc_pe_fix_adjustable (fix)
3869 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
3876 /* XCOFF specific symbol and file handling. */
3878 /* Canonicalize the symbol name. We use the to force the suffix, if
3879 any, to use square brackets, and to be in upper case. */
3882 ppc_canonicalize_symbol_name (name)
3887 if (ppc_stab_symbol)
3890 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
3904 for (s++; *s != '\0' && *s != brac; s++)
3908 if (*s == '\0' || s[1] != '\0')
3909 as_bad (_("bad symbol suffix"));
3917 /* Set the class of a symbol based on the suffix, if any. This is
3918 called whenever a new symbol is created. */
3921 ppc_symbol_new_hook (sym)
3924 struct ppc_tc_sy *tc;
3927 tc = symbol_get_tc (sym);
3931 tc->real_name = NULL;
3937 if (ppc_stab_symbol)
3940 s = strchr (S_GET_NAME (sym), '[');
3941 if (s == (const char *) NULL)
3943 /* There is no suffix. */
3952 if (strcmp (s, "BS]") == 0)
3956 if (strcmp (s, "DB]") == 0)
3958 else if (strcmp (s, "DS]") == 0)
3962 if (strcmp (s, "GL]") == 0)
3966 if (strcmp (s, "PR]") == 0)
3970 if (strcmp (s, "RO]") == 0)
3972 else if (strcmp (s, "RW]") == 0)
3976 if (strcmp (s, "SV]") == 0)
3980 if (strcmp (s, "TC]") == 0)
3982 else if (strcmp (s, "TI]") == 0)
3984 else if (strcmp (s, "TB]") == 0)
3986 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
3987 tc->class = XMC_TC0;
3990 if (strcmp (s, "UA]") == 0)
3992 else if (strcmp (s, "UC]") == 0)
3996 if (strcmp (s, "XO]") == 0)
4001 if (tc->class == -1)
4002 as_bad (_("Unrecognized symbol suffix"));
4005 /* Set the class of a label based on where it is defined. This
4006 handles symbols without suffixes. Also, move the symbol so that it
4007 follows the csect symbol. */
4010 ppc_frob_label (sym)
4013 if (ppc_current_csect != (symbolS *) NULL)
4015 if (symbol_get_tc (sym)->class == -1)
4016 symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class;
4018 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4019 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
4020 &symbol_rootP, &symbol_lastP);
4021 symbol_get_tc (ppc_current_csect)->within = sym;
4025 /* This variable is set by ppc_frob_symbol if any absolute symbols are
4026 seen. It tells ppc_adjust_symtab whether it needs to look through
4029 static boolean ppc_saw_abs;
4031 /* Change the name of a symbol just before writing it out. Set the
4032 real name if the .rename pseudo-op was used. Otherwise, remove any
4033 class suffix. Return 1 if the symbol should not be included in the
4037 ppc_frob_symbol (sym)
4040 static symbolS *ppc_last_function;
4041 static symbolS *set_end;
4043 /* Discard symbols that should not be included in the output symbol
4045 if (! symbol_used_in_reloc_p (sym)
4046 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
4047 || (! S_IS_EXTERNAL (sym)
4048 && ! symbol_get_tc (sym)->output
4049 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
4052 if (symbol_get_tc (sym)->real_name != (char *) NULL)
4053 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
4059 name = S_GET_NAME (sym);
4060 s = strchr (name, '[');
4061 if (s != (char *) NULL)
4067 snew = xmalloc (len + 1);
4068 memcpy (snew, name, len);
4071 S_SET_NAME (sym, snew);
4075 if (set_end != (symbolS *) NULL)
4077 SA_SET_SYM_ENDNDX (set_end, sym);
4081 if (SF_GET_FUNCTION (sym))
4083 if (ppc_last_function != (symbolS *) NULL)
4084 as_bad (_("two .function pseudo-ops with no intervening .ef"));
4085 ppc_last_function = sym;
4086 if (symbol_get_tc (sym)->size != (symbolS *) NULL)
4088 resolve_symbol_value (symbol_get_tc (sym)->size, 1);
4089 SA_SET_SYM_FSIZE (sym,
4090 (long) S_GET_VALUE (symbol_get_tc (sym)->size));
4093 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
4094 && strcmp (S_GET_NAME (sym), ".ef") == 0)
4096 if (ppc_last_function == (symbolS *) NULL)
4097 as_bad (_(".ef with no preceding .function"));
4100 set_end = ppc_last_function;
4101 ppc_last_function = NULL;
4103 /* We don't have a C_EFCN symbol, but we need to force the
4104 COFF backend to believe that it has seen one. */
4105 coff_last_function = NULL;
4109 if (! S_IS_EXTERNAL (sym)
4110 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
4111 && S_GET_STORAGE_CLASS (sym) != C_FILE
4112 && S_GET_STORAGE_CLASS (sym) != C_FCN
4113 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
4114 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
4115 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
4116 && S_GET_STORAGE_CLASS (sym) != C_BINCL
4117 && S_GET_STORAGE_CLASS (sym) != C_EINCL
4118 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
4119 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
4121 if (S_GET_STORAGE_CLASS (sym) == C_EXT
4122 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
4125 union internal_auxent *a;
4127 /* Create a csect aux. */
4128 i = S_GET_NUMBER_AUXILIARY (sym);
4129 S_SET_NUMBER_AUXILIARY (sym, i + 1);
4130 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
4131 if (symbol_get_tc (sym)->class == XMC_TC0)
4133 /* This is the TOC table. */
4134 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
4135 a->x_csect.x_scnlen.l = 0;
4136 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4138 else if (symbol_get_tc (sym)->subseg != 0)
4140 /* This is a csect symbol. x_scnlen is the size of the
4142 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
4143 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4144 S_GET_SEGMENT (sym))
4145 - S_GET_VALUE (sym));
4148 resolve_symbol_value (symbol_get_tc (sym)->next, 1);
4149 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
4150 - S_GET_VALUE (sym));
4152 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
4154 else if (S_GET_SEGMENT (sym) == bss_section)
4156 /* This is a common symbol. */
4157 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
4158 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
4159 if (S_IS_EXTERNAL (sym))
4160 symbol_get_tc (sym)->class = XMC_RW;
4162 symbol_get_tc (sym)->class = XMC_BS;
4164 else if (S_GET_SEGMENT (sym) == absolute_section)
4166 /* This is an absolute symbol. The csect will be created by
4167 ppc_adjust_symtab. */
4169 a->x_csect.x_smtyp = XTY_LD;
4170 if (symbol_get_tc (sym)->class == -1)
4171 symbol_get_tc (sym)->class = XMC_XO;
4173 else if (! S_IS_DEFINED (sym))
4175 /* This is an external symbol. */
4176 a->x_csect.x_scnlen.l = 0;
4177 a->x_csect.x_smtyp = XTY_ER;
4179 else if (symbol_get_tc (sym)->class == XMC_TC)
4183 /* This is a TOC definition. x_scnlen is the size of the
4185 next = symbol_next (sym);
4186 while (symbol_get_tc (next)->class == XMC_TC0)
4187 next = symbol_next (next);
4188 if (next == (symbolS *) NULL
4189 || symbol_get_tc (next)->class != XMC_TC)
4191 if (ppc_after_toc_frag == (fragS *) NULL)
4192 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4194 - S_GET_VALUE (sym));
4196 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
4197 - S_GET_VALUE (sym));
4201 resolve_symbol_value (next, 1);
4202 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
4203 - S_GET_VALUE (sym));
4205 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4211 /* This is a normal symbol definition. x_scnlen is the
4212 symbol index of the containing csect. */
4213 if (S_GET_SEGMENT (sym) == text_section)
4214 csect = ppc_text_csects;
4215 else if (S_GET_SEGMENT (sym) == data_section)
4216 csect = ppc_data_csects;
4220 /* Skip the initial dummy symbol. */
4221 csect = symbol_get_tc (csect)->next;
4223 if (csect == (symbolS *) NULL)
4225 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
4226 a->x_csect.x_scnlen.l = 0;
4230 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
4232 resolve_symbol_value (symbol_get_tc (csect)->next, 1);
4233 if (S_GET_VALUE (symbol_get_tc (csect)->next)
4234 > S_GET_VALUE (sym))
4236 csect = symbol_get_tc (csect)->next;
4239 a->x_csect.x_scnlen.p =
4240 coffsymbol (symbol_get_bfdsym (csect))->native;
4241 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
4244 a->x_csect.x_smtyp = XTY_LD;
4247 a->x_csect.x_parmhash = 0;
4248 a->x_csect.x_snhash = 0;
4249 if (symbol_get_tc (sym)->class == -1)
4250 a->x_csect.x_smclas = XMC_PR;
4252 a->x_csect.x_smclas = symbol_get_tc (sym)->class;
4253 a->x_csect.x_stab = 0;
4254 a->x_csect.x_snstab = 0;
4256 /* Don't let the COFF backend resort these symbols. */
4257 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
4259 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
4261 /* We want the value to be the symbol index of the referenced
4262 csect symbol. BFD will do that for us if we set the right
4266 coffsymbol (symbol_get_bfdsym
4267 (symbol_get_tc (sym)->within))->native));
4268 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
4270 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
4275 /* The value is the offset from the enclosing csect. */
4276 block = symbol_get_tc (sym)->within;
4277 csect = symbol_get_tc (block)->within;
4278 resolve_symbol_value (csect, 1);
4279 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
4281 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
4282 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
4284 /* We want the value to be a file offset into the line numbers.
4285 BFD will do that for us if we set the right flags. We have
4286 already set the value correctly. */
4287 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
4293 /* Adjust the symbol table. This creates csect symbols for all
4294 absolute symbols. */
4297 ppc_adjust_symtab ()
4304 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
4308 union internal_auxent *a;
4310 if (S_GET_SEGMENT (sym) != absolute_section)
4313 csect = symbol_create (".abs[XO]", absolute_section,
4314 S_GET_VALUE (sym), &zero_address_frag);
4315 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
4316 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
4317 i = S_GET_NUMBER_AUXILIARY (csect);
4318 S_SET_NUMBER_AUXILIARY (csect, i + 1);
4319 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
4320 a->x_csect.x_scnlen.l = 0;
4321 a->x_csect.x_smtyp = XTY_SD;
4322 a->x_csect.x_parmhash = 0;
4323 a->x_csect.x_snhash = 0;
4324 a->x_csect.x_smclas = XMC_XO;
4325 a->x_csect.x_stab = 0;
4326 a->x_csect.x_snstab = 0;
4328 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
4330 i = S_GET_NUMBER_AUXILIARY (sym);
4331 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
4332 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
4333 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
4336 ppc_saw_abs = false;
4339 /* Set the VMA for a section. This is called on all the sections in
4343 ppc_frob_section (sec)
4346 static bfd_size_type vma = 0;
4348 bfd_set_section_vma (stdoutput, sec, vma);
4349 vma += bfd_section_size (stdoutput, sec);
4352 #endif /* OBJ_XCOFF */
4354 /* Turn a string in input_line_pointer into a floating point constant
4355 of type type, and store the appropriate bytes in *litp. The number
4356 of LITTLENUMS emitted is stored in *sizep . An error message is
4357 returned, or NULL on OK. */
4360 md_atof (type, litp, sizep)
4366 LITTLENUM_TYPE words[4];
4382 return _("bad call to md_atof");
4385 t = atof_ieee (input_line_pointer, type, words);
4387 input_line_pointer = t;
4391 if (target_big_endian)
4393 for (i = 0; i < prec; i++)
4395 md_number_to_chars (litp, (valueT) words[i], 2);
4401 for (i = prec - 1; i >= 0; i--)
4403 md_number_to_chars (litp, (valueT) words[i], 2);
4411 /* Write a value out to the object file, using the appropriate
4415 md_number_to_chars (buf, val, n)
4420 if (target_big_endian)
4421 number_to_chars_bigendian (buf, val, n);
4423 number_to_chars_littleendian (buf, val, n);
4426 /* Align a section (I don't know why this is machine dependent). */
4429 md_section_align (seg, addr)
4433 int align = bfd_get_section_alignment (stdoutput, seg);
4435 return ((addr + (1 << align) - 1) & (-1 << align));
4438 /* We don't have any form of relaxing. */
4441 md_estimate_size_before_relax (fragp, seg)
4449 /* Convert a machine dependent frag. We never generate these. */
4452 md_convert_frag (abfd, sec, fragp)
4460 /* We have no need to default values of symbols. */
4464 md_undefined_symbol (name)
4470 /* Functions concerning relocs. */
4472 /* The location from which a PC relative jump should be calculated,
4473 given a PC relative reloc. */
4476 md_pcrel_from_section (fixp, sec)
4480 return fixp->fx_frag->fr_address + fixp->fx_where;
4485 /* This is called to see whether a fixup should be adjusted to use a
4486 section symbol. We take the opportunity to change a fixup against
4487 a symbol in the TOC subsegment into a reloc against the
4488 corresponding .tc symbol. */
4491 ppc_fix_adjustable (fix)
4496 resolve_symbol_value (fix->fx_addsy, 1);
4497 val = S_GET_VALUE (fix->fx_addsy);
4498 if (ppc_toc_csect != (symbolS *) NULL
4499 && fix->fx_addsy != (symbolS *) NULL
4500 && fix->fx_addsy != ppc_toc_csect
4501 && S_GET_SEGMENT (fix->fx_addsy) == data_section
4502 && val >= ppc_toc_frag->fr_address
4503 && (ppc_after_toc_frag == (fragS *) NULL
4504 || val < ppc_after_toc_frag->fr_address))
4508 for (sy = symbol_next (ppc_toc_csect);
4509 sy != (symbolS *) NULL;
4510 sy = symbol_next (sy))
4512 if (symbol_get_tc (sy)->class == XMC_TC0)
4514 if (symbol_get_tc (sy)->class != XMC_TC)
4516 resolve_symbol_value (sy, 1);
4517 if (val == S_GET_VALUE (sy))
4520 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
4525 as_bad_where (fix->fx_file, fix->fx_line,
4526 _("symbol in .toc does not match any .tc"));
4529 /* Possibly adjust the reloc to be against the csect. */
4530 if (fix->fx_addsy != (symbolS *) NULL
4531 && symbol_get_tc (fix->fx_addsy)->subseg == 0
4532 && symbol_get_tc (fix->fx_addsy)->class != XMC_TC0
4533 && symbol_get_tc (fix->fx_addsy)->class != XMC_TC
4534 && S_GET_SEGMENT (fix->fx_addsy) != bss_section
4535 /* Don't adjust if this is a reloc in the toc section. */
4536 && (S_GET_SEGMENT (fix->fx_addsy) != data_section
4537 || ppc_toc_csect == NULL
4538 || val < ppc_toc_frag->fr_address
4539 || (ppc_after_toc_frag != NULL
4540 && val >= ppc_after_toc_frag->fr_address)))
4544 if (S_GET_SEGMENT (fix->fx_addsy) == text_section)
4545 csect = ppc_text_csects;
4546 else if (S_GET_SEGMENT (fix->fx_addsy) == data_section)
4547 csect = ppc_data_csects;
4551 /* Skip the initial dummy symbol. */
4552 csect = symbol_get_tc (csect)->next;
4554 if (csect != (symbolS *) NULL)
4556 while (symbol_get_tc (csect)->next != (symbolS *) NULL
4557 && (symbol_get_frag (symbol_get_tc (csect)->next)->fr_address
4558 <= symbol_get_frag (fix->fx_addsy)->fr_address))
4560 /* If the csect address equals the symbol value, then we
4561 have to look through the full symbol table to see
4562 whether this is the csect we want. Note that we will
4563 only get here if the csect has zero length. */
4564 if ((symbol_get_frag (csect)->fr_address
4565 == symbol_get_frag (fix->fx_addsy)->fr_address)
4566 && S_GET_VALUE (csect) == S_GET_VALUE (fix->fx_addsy))
4570 for (scan = symbol_next (csect);
4572 scan = symbol_next (scan))
4574 if (symbol_get_tc (scan)->subseg != 0)
4576 if (scan == fix->fx_addsy)
4580 /* If we found the symbol before the next csect
4581 symbol, then this is the csect we want. */
4582 if (scan == fix->fx_addsy)
4586 csect = symbol_get_tc (csect)->next;
4589 fix->fx_offset += (S_GET_VALUE (fix->fx_addsy)
4590 - symbol_get_frag (csect)->fr_address);
4591 fix->fx_addsy = csect;
4595 /* Adjust a reloc against a .lcomm symbol to be against the base
4597 if (fix->fx_addsy != (symbolS *) NULL
4598 && S_GET_SEGMENT (fix->fx_addsy) == bss_section
4599 && ! S_IS_EXTERNAL (fix->fx_addsy))
4601 resolve_symbol_value (symbol_get_frag (fix->fx_addsy)->fr_symbol, 1);
4603 (S_GET_VALUE (fix->fx_addsy)
4604 - S_GET_VALUE (symbol_get_frag (fix->fx_addsy)->fr_symbol));
4605 fix->fx_addsy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
4611 /* A reloc from one csect to another must be kept. The assembler
4612 will, of course, keep relocs between sections, and it will keep
4613 absolute relocs, but we need to force it to keep PC relative relocs
4614 between two csects in the same section. */
4617 ppc_force_relocation (fix)
4620 /* At this point fix->fx_addsy should already have been converted to
4621 a csect symbol. If the csect does not include the fragment, then
4622 we need to force the relocation. */
4624 && fix->fx_addsy != NULL
4625 && symbol_get_tc (fix->fx_addsy)->subseg != 0
4626 && ((symbol_get_frag (fix->fx_addsy)->fr_address
4627 > fix->fx_frag->fr_address)
4628 || (symbol_get_tc (fix->fx_addsy)->next != NULL
4629 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
4630 <= fix->fx_frag->fr_address))))
4636 #endif /* OBJ_XCOFF */
4638 /* See whether a symbol is in the TOC section. */
4641 ppc_is_toc_sym (sym)
4645 return symbol_get_tc (sym)->class == XMC_TC;
4647 return strcmp (segment_name (S_GET_SEGMENT (sym)), ".got") == 0;
4651 /* Apply a fixup to the object code. This is called for all the
4652 fixups we generated by the call to fix_new_exp, above. In the call
4653 above we used a reloc code which was the largest legal reloc code
4654 plus the operand index. Here we undo that to recover the operand
4655 index. At this point all symbol values should be fully resolved,
4656 and we attempt to completely resolve the reloc. If we can not do
4657 that, we determine the correct reloc code and put it back in the
4661 md_apply_fix3 (fixp, valuep, seg)
4670 if (fixp->fx_addsy != NULL)
4672 /* `*valuep' may contain the value of the symbol on which the reloc
4673 will be based; we have to remove it. */
4674 if (symbol_used_in_reloc_p (fixp->fx_addsy)
4675 && S_GET_SEGMENT (fixp->fx_addsy) != absolute_section
4676 && S_GET_SEGMENT (fixp->fx_addsy) != undefined_section
4677 && ! bfd_is_com_section (S_GET_SEGMENT (fixp->fx_addsy)))
4678 value -= S_GET_VALUE (fixp->fx_addsy);
4680 /* FIXME: Why '+'? Better yet, what exactly is '*valuep'
4681 supposed to be? I think this is related to various similar
4682 FIXMEs in tc-i386.c and tc-sparc.c. */
4684 value += fixp->fx_frag->fr_address + fixp->fx_where;
4691 /* FIXME FIXME FIXME: The value we are passed in *valuep includes
4692 the symbol values. Since we are using BFD_ASSEMBLER, if we are
4693 doing this relocation the code in write.c is going to call
4694 bfd_install_relocation, which is also going to use the symbol
4695 value. That means that if the reloc is fully resolved we want to
4696 use *valuep since bfd_install_relocation is not being used.
4697 However, if the reloc is not fully resolved we do not want to use
4698 *valuep, and must use fx_offset instead. However, if the reloc
4699 is PC relative, we do want to use *valuep since it includes the
4700 result of md_pcrel_from. This is confusing. */
4701 if (fixp->fx_addsy == (symbolS *) NULL)
4706 else if (fixp->fx_pcrel)
4710 value = fixp->fx_offset;
4711 if (fixp->fx_subsy != (symbolS *) NULL)
4713 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
4714 value -= S_GET_VALUE (fixp->fx_subsy);
4717 /* We can't actually support subtracting a symbol. */
4718 as_bad_where (fixp->fx_file, fixp->fx_line,
4719 _("expression too complex"));
4725 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
4728 const struct powerpc_operand *operand;
4732 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
4734 operand = &powerpc_operands[opindex];
4737 /* It appears that an instruction like
4739 when LC..1 is not a TOC symbol does not generate a reloc. It
4740 uses the offset of LC..1 within its csect. However, .long
4741 LC..1 will generate a reloc. I can't find any documentation
4742 on how these cases are to be distinguished, so this is a wild
4743 guess. These cases are generated by gcc -mminimal-toc. */
4744 if ((operand->flags & PPC_OPERAND_PARENS) != 0
4745 && operand->bits == 16
4746 && operand->shift == 0
4747 && operand->insert == NULL
4748 && fixp->fx_addsy != NULL
4749 && symbol_get_tc (fixp->fx_addsy)->subseg != 0
4750 && symbol_get_tc (fixp->fx_addsy)->class != XMC_TC
4751 && symbol_get_tc (fixp->fx_addsy)->class != XMC_TC0
4752 && S_GET_SEGMENT (fixp->fx_addsy) != bss_section)
4754 value = fixp->fx_offset;
4759 /* Fetch the instruction, insert the fully resolved operand
4760 value, and stuff the instruction back again. */
4761 where = fixp->fx_frag->fr_literal + fixp->fx_where;
4762 if (target_big_endian)
4763 insn = bfd_getb32 ((unsigned char *) where);
4765 insn = bfd_getl32 ((unsigned char *) where);
4766 insn = ppc_insert_operand (insn, operand, (offsetT) value,
4767 fixp->fx_file, fixp->fx_line);
4768 if (target_big_endian)
4769 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
4771 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
4775 /* Nothing else to do here. */
4779 /* Determine a BFD reloc value based on the operand information.
4780 We are only prepared to turn a few of the operands into
4782 FIXME: We need to handle the DS field at the very least.
4783 FIXME: Selecting the reloc type is a bit haphazard; perhaps
4784 there should be a new field in the operand table. */
4785 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
4786 && operand->bits == 26
4787 && operand->shift == 0)
4788 fixp->fx_r_type = BFD_RELOC_PPC_B26;
4789 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
4790 && operand->bits == 16
4791 && operand->shift == 0)
4792 fixp->fx_r_type = BFD_RELOC_PPC_B16;
4793 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
4794 && operand->bits == 26
4795 && operand->shift == 0)
4796 fixp->fx_r_type = BFD_RELOC_PPC_BA26;
4797 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
4798 && operand->bits == 16
4799 && operand->shift == 0)
4800 fixp->fx_r_type = BFD_RELOC_PPC_BA16;
4801 else if ((operand->flags & PPC_OPERAND_PARENS) != 0
4802 && operand->bits == 16
4803 && operand->shift == 0
4804 && operand->insert == NULL
4805 && fixp->fx_addsy != NULL
4806 && ppc_is_toc_sym (fixp->fx_addsy))
4809 if (target_big_endian)
4810 fixp->fx_where += 2;
4811 fixp->fx_r_type = BFD_RELOC_PPC_TOC16;
4818 /* Use expr_symbol_where to see if this is an expression
4820 if (expr_symbol_where (fixp->fx_addsy, &sfile, &sline))
4821 as_bad_where (fixp->fx_file, fixp->fx_line,
4822 _("unresolved expression that must be resolved"));
4824 as_bad_where (fixp->fx_file, fixp->fx_line,
4825 _("unsupported relocation type"));
4833 ppc_elf_validate_fix (fixp, seg);
4835 switch (fixp->fx_r_type)
4838 case BFD_RELOC_CTOR:
4840 fixp->fx_r_type = BFD_RELOC_32_PCREL;
4844 case BFD_RELOC_32_PCREL:
4845 case BFD_RELOC_32_BASEREL:
4846 case BFD_RELOC_PPC_EMB_NADDR32:
4847 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
4851 case BFD_RELOC_LO16:
4853 case BFD_RELOC_GPREL16:
4854 case BFD_RELOC_16_GOT_PCREL:
4855 case BFD_RELOC_16_GOTOFF:
4856 case BFD_RELOC_LO16_GOTOFF:
4857 case BFD_RELOC_HI16_GOTOFF:
4858 case BFD_RELOC_HI16_S_GOTOFF:
4859 case BFD_RELOC_LO16_BASEREL:
4860 case BFD_RELOC_HI16_BASEREL:
4861 case BFD_RELOC_HI16_S_BASEREL:
4862 case BFD_RELOC_PPC_EMB_NADDR16:
4863 case BFD_RELOC_PPC_EMB_NADDR16_LO:
4864 case BFD_RELOC_PPC_EMB_NADDR16_HI:
4865 case BFD_RELOC_PPC_EMB_NADDR16_HA:
4866 case BFD_RELOC_PPC_EMB_SDAI16:
4867 case BFD_RELOC_PPC_EMB_SDA2REL:
4868 case BFD_RELOC_PPC_EMB_SDA2I16:
4869 case BFD_RELOC_PPC_EMB_RELSEC16:
4870 case BFD_RELOC_PPC_EMB_RELST_LO:
4871 case BFD_RELOC_PPC_EMB_RELST_HI:
4872 case BFD_RELOC_PPC_EMB_RELST_HA:
4873 case BFD_RELOC_PPC_EMB_RELSDA:
4874 case BFD_RELOC_PPC_TOC16:
4877 if (fixp->fx_addsy != NULL)
4878 as_bad_where (fixp->fx_file, fixp->fx_line,
4879 _("cannot emit PC relative %s relocation against %s"),
4880 bfd_get_reloc_code_name (fixp->fx_r_type),
4881 S_GET_NAME (fixp->fx_addsy));
4883 as_bad_where (fixp->fx_file, fixp->fx_line,
4884 _("cannot emit PC relative %s relocation"),
4885 bfd_get_reloc_code_name (fixp->fx_r_type));
4888 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
4892 /* This case happens when you write, for example,
4894 where L1 and L2 are defined later. */
4895 case BFD_RELOC_HI16:
4898 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
4901 case BFD_RELOC_HI16_S:
4904 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
4905 (value + 0x8000) >> 16, 2);
4908 /* Because SDA21 modifies the register field, the size is set to 4
4909 bytes, rather than 2, so offset it here appropriately */
4910 case BFD_RELOC_PPC_EMB_SDA21:
4914 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where
4915 + ((target_big_endian) ? 2 : 0),
4923 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
4927 case BFD_RELOC_24_PLT_PCREL:
4928 case BFD_RELOC_PPC_LOCAL24PC:
4929 if (!fixp->fx_pcrel && !fixp->fx_done)
4937 /* Fetch the instruction, insert the fully resolved operand
4938 value, and stuff the instruction back again. */
4939 where = fixp->fx_frag->fr_literal + fixp->fx_where;
4940 if (target_big_endian)
4941 insn = bfd_getb32 ((unsigned char *) where);
4943 insn = bfd_getl32 ((unsigned char *) where);
4944 if ((value & 3) != 0)
4945 as_bad_where (fixp->fx_file, fixp->fx_line,
4946 _("must branch to an address a multiple of 4"));
4947 if ((offsetT) value < -0x40000000
4948 || (offsetT) value >= 0x40000000)
4949 as_bad_where (fixp->fx_file, fixp->fx_line,
4950 _("@local or @plt branch destination is too far away, %ld bytes"),
4952 insn = insn | (value & 0x03fffffc);
4953 if (target_big_endian)
4954 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
4956 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
4960 case BFD_RELOC_VTABLE_INHERIT:
4963 && !S_IS_DEFINED (fixp->fx_addsy)
4964 && !S_IS_WEAK (fixp->fx_addsy))
4965 S_SET_WEAK (fixp->fx_addsy);
4968 case BFD_RELOC_VTABLE_ENTRY:
4974 _("Gas failure, reloc value %d\n"), fixp->fx_r_type);
4981 fixp->fx_addnumber = value;
4983 if (fixp->fx_r_type != BFD_RELOC_PPC_TOC16)
4984 fixp->fx_addnumber = 0;
4988 fixp->fx_addnumber = 0;
4990 /* We want to use the offset within the data segment of the
4991 symbol, not the actual VMA of the symbol. */
4992 fixp->fx_addnumber =
4993 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixp->fx_addsy));
5001 /* Generate a reloc for a fixup. */
5004 tc_gen_reloc (seg, fixp)
5010 reloc = (arelent *) xmalloc (sizeof (arelent));
5012 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
5013 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
5014 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
5015 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
5016 if (reloc->howto == (reloc_howto_type *) NULL)
5018 as_bad_where (fixp->fx_file, fixp->fx_line,
5019 _("reloc %d not supported by object file format"), (int)fixp->fx_r_type);
5022 reloc->addend = fixp->fx_addnumber;