1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include "opcode/v850.h"
31 /* sign-extend a 16-bit number */
32 #define SEXT16(x) ((((x) & 0xffff) ^ (~ 0x7fff)) + 0x8000)
34 /* Temporarily holds the reloc in a cons expression. */
35 static bfd_reloc_code_real_type hold_cons_reloc;
37 /* Set to TRUE if we want to be pedantic about signed overflows. */
38 static boolean warn_signed_overflows = FALSE;
39 static boolean warn_unsigned_overflows = FALSE;
41 /* Indicates the target BFD machine number. */
42 static int machine = -1;
44 /* Indicates the target processor(s) for the assemble. */
45 static int processor_mask = -1;
48 /* Structure to hold information about predefined registers. */
55 /* Generic assembler global variables which must be defined by all targets. */
57 /* Characters which always start a comment. */
58 const char comment_chars[] = "#";
60 /* Characters which start a comment at the beginning of a line. */
61 const char line_comment_chars[] = ";#";
63 /* Characters which may be used to separate multiple commands on a
65 const char line_separator_chars[] = ";";
67 /* Characters which are used to indicate an exponent in a floating
69 const char EXP_CHARS[] = "eE";
71 /* Characters which mean that a number is a floating point constant,
73 const char FLT_CHARS[] = "dD";
76 const relax_typeS md_relax_table[] =
78 /* Conditional branches. */
80 {0x1fffff, -0x200000, 6, 0},
81 /* Unconditional branches. */
83 {0x1fffff, -0x200000, 4, 0},
87 static segT sdata_section = NULL;
88 static segT tdata_section = NULL;
89 static segT zdata_section = NULL;
90 static segT sbss_section = NULL;
91 static segT tbss_section = NULL;
92 static segT zbss_section = NULL;
93 static segT rosdata_section = NULL;
94 static segT rozdata_section = NULL;
95 static segT scommon_section = NULL;
96 static segT tcommon_section = NULL;
97 static segT zcommon_section = NULL;
98 static segT call_table_data_section = NULL;
99 static segT call_table_text_section = NULL;
102 #define MAX_INSN_FIXUPS (5)
107 bfd_reloc_code_real_type reloc;
110 struct v850_fixup fixups [MAX_INSN_FIXUPS];
115 v850_sdata (int ignore ATTRIBUTE_UNUSED)
117 obj_elf_section_change_hook();
119 subseg_set (sdata_section, (subsegT) get_absolute_expression ());
121 demand_empty_rest_of_line ();
125 v850_tdata (int ignore ATTRIBUTE_UNUSED)
127 obj_elf_section_change_hook();
129 subseg_set (tdata_section, (subsegT) get_absolute_expression ());
131 demand_empty_rest_of_line ();
135 v850_zdata (int ignore ATTRIBUTE_UNUSED)
137 obj_elf_section_change_hook();
139 subseg_set (zdata_section, (subsegT) get_absolute_expression ());
141 demand_empty_rest_of_line ();
145 v850_sbss (int ignore ATTRIBUTE_UNUSED)
147 obj_elf_section_change_hook();
149 subseg_set (sbss_section, (subsegT) get_absolute_expression ());
151 demand_empty_rest_of_line ();
155 v850_tbss (int ignore ATTRIBUTE_UNUSED)
157 obj_elf_section_change_hook();
159 subseg_set (tbss_section, (subsegT) get_absolute_expression ());
161 demand_empty_rest_of_line ();
165 v850_zbss (int ignore ATTRIBUTE_UNUSED)
167 obj_elf_section_change_hook();
169 subseg_set (zbss_section, (subsegT) get_absolute_expression ());
171 demand_empty_rest_of_line ();
175 v850_rosdata (int ignore ATTRIBUTE_UNUSED)
177 obj_elf_section_change_hook();
179 subseg_set (rosdata_section, (subsegT) get_absolute_expression ());
181 demand_empty_rest_of_line ();
185 v850_rozdata (int ignore ATTRIBUTE_UNUSED)
187 obj_elf_section_change_hook();
189 subseg_set (rozdata_section, (subsegT) get_absolute_expression ());
191 demand_empty_rest_of_line ();
195 v850_call_table_data (int ignore ATTRIBUTE_UNUSED)
197 obj_elf_section_change_hook();
199 subseg_set (call_table_data_section, (subsegT) get_absolute_expression ());
201 demand_empty_rest_of_line ();
205 v850_call_table_text (int ignore ATTRIBUTE_UNUSED)
207 obj_elf_section_change_hook();
209 subseg_set (call_table_text_section, (subsegT) get_absolute_expression ());
211 demand_empty_rest_of_line ();
215 v850_bss (int ignore ATTRIBUTE_UNUSED)
217 register int temp = get_absolute_expression ();
219 obj_elf_section_change_hook();
221 subseg_set (bss_section, (subsegT) temp);
223 demand_empty_rest_of_line ();
227 v850_offset (int ignore ATTRIBUTE_UNUSED)
229 int temp = get_absolute_expression ();
231 temp -= frag_now_fix();
234 (void) frag_more (temp);
236 demand_empty_rest_of_line ();
239 /* Copied from obj_elf_common() in gas/config/obj-elf.c */
252 name = input_line_pointer;
253 c = get_symbol_end ();
255 /* just after name is now '\0' */
256 p = input_line_pointer;
261 if (*input_line_pointer != ',')
263 as_bad (_("Expected comma after symbol-name"));
264 ignore_rest_of_line ();
268 input_line_pointer ++; /* skip ',' */
270 if ((temp = get_absolute_expression ()) < 0)
272 /* xgettext:c-format */
273 as_bad (_(".COMMon length (%d.) < 0! Ignored."), temp);
274 ignore_rest_of_line ();
280 symbolP = symbol_find_or_make (name);
283 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
285 as_bad (_("Ignoring attempt to re-define symbol"));
286 ignore_rest_of_line ();
290 if (S_GET_VALUE (symbolP) != 0)
292 if (S_GET_VALUE (symbolP) != size)
294 /* xgettext:c-format */
295 as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."),
296 S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size);
300 know (symbol_get_frag (symbolP) == & zero_address_frag);
302 if (*input_line_pointer != ',')
307 input_line_pointer++;
311 if (! have_align || *input_line_pointer != '"')
317 temp = get_absolute_expression ();
322 as_warn (_("Common alignment negative; 0 assumed"));
326 if (symbol_get_obj (symbolP)->local)
335 old_subsec = now_subseg;
337 applicable = bfd_applicable_section_flags (stdoutput);
339 applicable &= SEC_ALLOC;
344 if (sbss_section == NULL)
346 sbss_section = subseg_new (".sbss", 0);
348 bfd_set_section_flags (stdoutput, sbss_section, applicable);
350 seg_info (sbss_section)->bss = 1;
355 if (zbss_section == NULL)
357 zbss_section = subseg_new (".zbss", 0);
359 bfd_set_section_flags (stdoutput, sbss_section, applicable);
361 seg_info (zbss_section)->bss = 1;
366 if (tbss_section == NULL)
368 tbss_section = subseg_new (".tbss", 0);
370 bfd_set_section_flags (stdoutput, tbss_section, applicable);
372 seg_info (tbss_section)->bss = 1;
379 /* convert to a power of 2 alignment */
380 for (align = 0; (temp & 1) == 0; temp >>= 1, ++align)
385 as_bad (_("Common alignment not a power of 2"));
386 ignore_rest_of_line ();
396 record_alignment (sbss_section, align);
397 obj_elf_section_change_hook();
398 subseg_set (sbss_section, 0);
402 record_alignment (zbss_section, align);
403 obj_elf_section_change_hook();
404 subseg_set (zbss_section, 0);
408 record_alignment (tbss_section, align);
409 obj_elf_section_change_hook();
410 subseg_set (tbss_section, 0);
418 frag_align (align, 0, 0);
423 if (S_GET_SEGMENT (symbolP) == sbss_section)
424 symbol_get_frag (symbolP)->fr_symbol = 0;
428 if (S_GET_SEGMENT (symbolP) == zbss_section)
429 symbol_get_frag (symbolP)->fr_symbol = 0;
433 if (S_GET_SEGMENT (symbolP) == tbss_section)
434 symbol_get_frag (symbolP)->fr_symbol = 0;
441 symbol_set_frag (symbolP, frag_now);
442 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
443 (offsetT) size, (char *) 0);
445 S_SET_SIZE (symbolP, size);
450 S_SET_SEGMENT (symbolP, sbss_section);
454 S_SET_SEGMENT (symbolP, zbss_section);
458 S_SET_SEGMENT (symbolP, tbss_section);
465 S_CLEAR_EXTERNAL (symbolP);
466 obj_elf_section_change_hook();
467 subseg_set (old_sec, old_subsec);
472 S_SET_VALUE (symbolP, (valueT) size);
473 S_SET_ALIGN (symbolP, temp);
474 S_SET_EXTERNAL (symbolP);
479 if (scommon_section == NULL)
483 applicable = bfd_applicable_section_flags (stdoutput);
485 scommon_section = subseg_new (".scommon", 0);
487 bfd_set_section_flags (stdoutput, scommon_section,
489 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
490 | SEC_HAS_CONTENTS)) | SEC_IS_COMMON);
492 S_SET_SEGMENT (symbolP, scommon_section);
496 if (zcommon_section == NULL)
500 applicable = bfd_applicable_section_flags (stdoutput);
502 zcommon_section = subseg_new (".zcommon", 0);
504 bfd_set_section_flags (stdoutput, zcommon_section,
506 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
507 | SEC_HAS_CONTENTS)) | SEC_IS_COMMON);
509 S_SET_SEGMENT (symbolP, zcommon_section);
513 if (tcommon_section == NULL)
517 applicable = bfd_applicable_section_flags (stdoutput);
519 tcommon_section = subseg_new (".tcommon", 0);
521 bfd_set_section_flags (stdoutput, tcommon_section,
523 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
524 | SEC_HAS_CONTENTS)) | SEC_IS_COMMON);
526 S_SET_SEGMENT (symbolP, tcommon_section);
536 input_line_pointer++;
537 /* @@ Some use the dot, some don't. Can we get some consistency?? */
538 if (*input_line_pointer == '.')
539 input_line_pointer++;
540 /* @@ Some say data, some say bss. */
541 if (strncmp (input_line_pointer, "bss\"", 4)
542 && strncmp (input_line_pointer, "data\"", 5))
544 while (*--input_line_pointer != '"')
546 input_line_pointer--;
547 goto bad_common_segment;
549 while (*input_line_pointer++ != '"')
551 goto allocate_common;
554 symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
556 demand_empty_rest_of_line ();
561 p = input_line_pointer;
562 while (*p && *p != '\n')
566 as_bad (_("bad .common segment %s"), input_line_pointer + 1);
568 input_line_pointer = p;
569 ignore_rest_of_line ();
575 set_machine (int number)
578 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
582 case 0: processor_mask = PROCESSOR_V850; break;
583 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
584 case bfd_mach_v850ea: processor_mask = PROCESSOR_V850EA; break;
588 /* The target specific pseudo-ops which we support. */
589 const pseudo_typeS md_pseudo_table[] =
591 {"sdata", v850_sdata, 0},
592 {"tdata", v850_tdata, 0},
593 {"zdata", v850_zdata, 0},
594 {"sbss", v850_sbss, 0},
595 {"tbss", v850_tbss, 0},
596 {"zbss", v850_zbss, 0},
597 {"rosdata", v850_rosdata, 0},
598 {"rozdata", v850_rozdata, 0},
599 {"bss", v850_bss, 0},
600 {"offset", v850_offset, 0},
602 {"zcomm", v850_comm, AREA_ZDA},
603 {"scomm", v850_comm, AREA_SDA},
604 {"tcomm", v850_comm, AREA_TDA},
605 {"v850", set_machine, 0},
606 {"call_table_data", v850_call_table_data, 0},
607 {"call_table_text", v850_call_table_text, 0},
608 {"v850e", set_machine, bfd_mach_v850e},
609 {"v850ea", set_machine, bfd_mach_v850ea},
613 /* Opcode hash table. */
614 static struct hash_control *v850_hash;
616 /* This table is sorted. Suitable for searching by a binary search. */
617 static const struct reg_name pre_defined_registers[] =
619 { "ep", 30 }, /* ep - element ptr */
620 { "gp", 4 }, /* gp - global ptr */
621 { "hp", 2 }, /* hp - handler stack ptr */
622 { "lp", 31 }, /* lp - link ptr */
655 { "sp", 3 }, /* sp - stack ptr */
656 { "tp", 5 }, /* tp - text ptr */
659 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
662 static const struct reg_name system_registers[] =
676 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
678 static const struct reg_name system_list_registers[] =
683 #define SYSREGLIST_NAME_CNT (sizeof (system_list_registers) / sizeof (struct reg_name))
685 static const struct reg_name cc_names[] =
710 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
712 /* reg_name_search does a binary search of the given register table
713 to see if "name" is a valid regiter name. Returns the register
714 number from the array on success, or -1 on failure. */
717 reg_name_search (regs, regcount, name, accept_numbers)
718 const struct reg_name * regs;
721 boolean accept_numbers;
723 int middle, low, high;
727 /* If the register name is a symbol, then evaluate it. */
728 if ((symbolP = symbol_find (name)) != NULL)
730 /* If the symbol is an alias for another name then use that.
731 If the symbol is an alias for a number, then return the number. */
732 if (symbol_equated_p (symbolP))
734 name = S_GET_NAME (symbol_get_value_expression (symbolP)->X_add_symbol);
736 else if (accept_numbers)
738 int reg = S_GET_VALUE (symbolP);
740 if (reg >= 0 && reg <= 31)
744 /* Otherwise drop through and try parsing name normally. */
752 middle = (low + high) / 2;
753 cmp = strcasecmp (name, regs[middle].name);
759 return regs[middle].value;
766 /* Summary of register_name().
768 * in: Input_line_pointer points to 1st char of operand.
770 * out: A expressionS.
771 * The operand may have been a register: in this case, X_op == O_register,
772 * X_add_number is set to the register number, and truth is returned.
773 * Input_line_pointer->(next non-blank) char after operand, or is in
774 * its original state.
777 register_name (expressionP)
778 expressionS * expressionP;
785 /* Find the spelling of the operand */
786 start = name = input_line_pointer;
788 c = get_symbol_end ();
790 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT,
793 * input_line_pointer = c; /* put back the delimiting char */
795 /* look to see if it's in the register table */
798 expressionP->X_op = O_register;
799 expressionP->X_add_number = reg_number;
801 /* make the rest nice */
802 expressionP->X_add_symbol = NULL;
803 expressionP->X_op_symbol = NULL;
809 /* reset the line as if we had not done anything */
810 input_line_pointer = start;
816 /* Summary of system_register_name().
818 * in: Input_line_pointer points to 1st char of operand.
819 * expressionP points to an expression structure to be filled in.
820 * accept_numbers is true iff numerical register names may be used.
821 * accept_list_names is true iff the special names PS and SR may be
824 * out: A expressionS structure in expressionP.
825 * The operand may have been a register: in this case, X_op == O_register,
826 * X_add_number is set to the register number, and truth is returned.
827 * Input_line_pointer->(next non-blank) char after operand, or is in
828 * its original state.
831 system_register_name (expressionP, accept_numbers, accept_list_names)
832 expressionS * expressionP;
833 boolean accept_numbers;
834 boolean accept_list_names;
841 /* Find the spelling of the operand */
842 start = name = input_line_pointer;
844 c = get_symbol_end ();
845 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name,
848 * input_line_pointer = c; /* put back the delimiting char */
853 input_line_pointer = start; /* reset input_line pointer */
855 if (isdigit (* input_line_pointer))
857 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
859 /* Make sure that the register number is allowable. */
861 || (reg_number > 5 && reg_number < 16)
868 else if (accept_list_names)
870 c = get_symbol_end ();
871 reg_number = reg_name_search (system_list_registers,
872 SYSREGLIST_NAME_CNT, name, FALSE);
874 * input_line_pointer = c; /* put back the delimiting char */
878 /* look to see if it's in the register table */
881 expressionP->X_op = O_register;
882 expressionP->X_add_number = reg_number;
884 /* make the rest nice */
885 expressionP->X_add_symbol = NULL;
886 expressionP->X_op_symbol = NULL;
892 /* reset the line as if we had not done anything */
893 input_line_pointer = start;
899 /* Summary of cc_name().
901 * in: Input_line_pointer points to 1st char of operand.
903 * out: A expressionS.
904 * The operand may have been a register: in this case, X_op == O_register,
905 * X_add_number is set to the register number, and truth is returned.
906 * Input_line_pointer->(next non-blank) char after operand, or is in
907 * its original state.
910 cc_name (expressionP)
911 expressionS * expressionP;
918 /* Find the spelling of the operand */
919 start = name = input_line_pointer;
921 c = get_symbol_end ();
922 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE);
924 * input_line_pointer = c; /* put back the delimiting char */
926 /* look to see if it's in the register table */
929 expressionP->X_op = O_constant;
930 expressionP->X_add_number = reg_number;
932 /* make the rest nice */
933 expressionP->X_add_symbol = NULL;
934 expressionP->X_op_symbol = NULL;
940 /* reset the line as if we had not done anything */
941 input_line_pointer = start;
948 skip_white_space (void)
950 while ( * input_line_pointer == ' '
951 || * input_line_pointer == '\t')
952 ++ input_line_pointer;
955 /* Summary of parse_register_list ().
957 * in: Input_line_pointer points to 1st char of a list of registers.
958 * insn is the partially constructed instruction.
959 * operand is the operand being inserted.
961 * out: NULL if the parse completed successfully, otherwise a
962 * pointer to an error message is returned. If the parse
963 * completes the correct bit fields in the instruction
966 * Parses register lists with the syntax:
974 * and also parses constant epxressions whoes bits indicate the
975 * registers in the lists. The LSB in the expression refers to
976 * the lowest numbered permissable register in the register list,
977 * and so on upwards. System registers are considered to be very
984 unsigned long * insn,
985 const struct v850_operand * operand
988 static int type1_regs[ 32 ] = { 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
989 static int type2_regs[ 32 ] = { 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
990 static int type3_regs[ 32 ] = { 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8 };
995 /* Select a register array to parse. */
996 switch (operand->shift)
998 case 0xffe00001: regs = type1_regs; break;
999 case 0xfff8000f: regs = type2_regs; break;
1000 case 0xfff8001f: regs = type3_regs; break;
1002 as_bad (_("unknown operand shift: %x\n"), operand->shift);
1003 return _("internal failure in parse_register_list");
1006 skip_white_space ();
1008 /* If the expression starts with a curly brace it is a register list.
1009 Otherwise it is a constant expression, whoes bits indicate which
1010 registers are to be included in the list. */
1012 if (* input_line_pointer != '{')
1019 if (exp.X_op != O_constant)
1020 return _("constant expression or register list expected");
1022 if (regs == type1_regs)
1024 if (exp.X_add_number & 0xFFFFF000)
1025 return _("high bits set in register list expression");
1027 for (reg = 20; reg < 32; reg ++)
1028 if (exp.X_add_number & (1 << (reg - 20)))
1030 for (i = 0; i < 32; i++)
1035 else if (regs == type2_regs)
1037 if (exp.X_add_number & 0xFFFE0000)
1038 return _("high bits set in register list expression");
1040 for (reg = 1; reg < 16; reg ++)
1041 if (exp.X_add_number & (1 << (reg - 1)))
1043 for (i = 0; i < 32; i++)
1048 if (exp.X_add_number & (1 << 15))
1051 if (exp.X_add_number & (1 << 16))
1052 * insn |= (1 << 19);
1054 else /* regs == type3_regs */
1056 if (exp.X_add_number & 0xFFFE0000)
1057 return _("high bits set in register list expression");
1059 for (reg = 16; reg < 32; reg ++)
1060 if (exp.X_add_number & (1 << (reg - 16)))
1062 for (i = 0; i < 32; i++)
1067 if (exp.X_add_number & (1 << 16))
1068 * insn |= (1 << 19);
1074 input_line_pointer ++;
1076 /* Parse the register list until a terminator (closing curly brace or
1077 new-line) is found. */
1080 if (register_name (& exp))
1084 /* Locate the given register in the list, and if it is there,
1085 insert the corresponding bit into the instruction. */
1086 for (i = 0; i < 32; i++)
1088 if (regs[ i ] == exp.X_add_number)
1097 return _("illegal register included in list");
1100 else if (system_register_name (& exp, true, true))
1102 if (regs == type1_regs)
1104 return _("system registers cannot be included in list");
1106 else if (exp.X_add_number == 5)
1108 if (regs == type2_regs)
1109 return _("PSW cannot be included in list");
1113 else if (exp.X_add_number < 4)
1116 return _("High value system registers cannot be included in list");
1118 else if (* input_line_pointer == '}')
1120 input_line_pointer ++;
1123 else if (* input_line_pointer == ',')
1125 input_line_pointer ++;
1128 else if (* input_line_pointer == '-')
1130 /* We have encountered a range of registers: rX - rY */
1134 /* Skip the dash. */
1135 ++ input_line_pointer;
1137 /* Get the second register in the range. */
1138 if (! register_name (& exp2))
1140 return _("second register should follow dash in register list");
1141 exp2.X_add_number = exp.X_add_number;
1144 /* Add the rest of the registers in the range. */
1145 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
1149 /* Locate the given register in the list, and if it is there,
1150 insert the corresponding bit into the instruction. */
1151 for (i = 0; i < 32; i++)
1161 return _("illegal register included in list");
1169 skip_white_space ();
1175 CONST char * md_shortopts = "m:";
1177 struct option md_longopts[] =
1179 {NULL, no_argument, NULL, 0}
1181 size_t md_longopts_size = sizeof md_longopts;
1185 md_show_usage (stream)
1188 fprintf (stream, _(" V850 options:\n"));
1189 fprintf (stream, _(" -mwarn-signed-overflow Warn if signed immediate values overflow\n"));
1190 fprintf (stream, _(" -mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n"));
1191 fprintf (stream, _(" -mv850 The code is targeted at the v850\n"));
1192 fprintf (stream, _(" -mv850e The code is targeted at the v850e\n"));
1193 fprintf (stream, _(" -mv850ea The code is targeted at the v850ea\n"));
1194 fprintf (stream, _(" -mv850any The code is generic, despite any processor specific instructions\n"));
1198 md_parse_option (c, arg)
1205 /* xgettext:c-format */
1206 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1210 if (strcmp (arg, "warn-signed-overflow") == 0)
1212 warn_signed_overflows = TRUE;
1214 else if (strcmp (arg, "warn-unsigned-overflow") == 0)
1216 warn_unsigned_overflows = TRUE;
1218 else if (strcmp (arg, "v850") == 0)
1221 processor_mask = PROCESSOR_V850;
1223 else if (strcmp (arg, "v850e") == 0)
1225 machine = bfd_mach_v850e;
1226 processor_mask = PROCESSOR_V850E;
1228 else if (strcmp (arg, "v850ea") == 0)
1230 machine = bfd_mach_v850ea;
1231 processor_mask = PROCESSOR_V850EA;
1233 else if (strcmp (arg, "v850any") == 0)
1235 machine = 0; /* Tell the world that this is for any v850 chip. */
1236 processor_mask = PROCESSOR_V850EA; /* But support instructions for the extended versions. */
1240 /* xgettext:c-format */
1241 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1249 md_undefined_symbol (name)
1250 char * name ATTRIBUTE_UNUSED;
1256 md_atof (type, litp, sizep)
1262 LITTLENUM_TYPE words[4];
1278 return _("bad call to md_atof");
1281 t = atof_ieee (input_line_pointer, type, words);
1283 input_line_pointer = t;
1287 for (i = prec - 1; i >= 0; i--)
1289 md_number_to_chars (litp, (valueT) words[i], 2);
1299 md_convert_frag (abfd, sec, fragP)
1300 bfd * abfd ATTRIBUTE_UNUSED;
1304 subseg_change (sec, 0);
1306 /* In range conditional or unconditional branch. */
1307 if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2)
1309 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
1310 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
1314 /* Out of range conditional branch. Emit a branch around a jump. */
1315 else if (fragP->fr_subtype == 1)
1317 unsigned char *buffer =
1318 (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
1320 /* Reverse the condition of the first branch. */
1322 /* Mask off all the displacement bits. */
1325 /* Now set the displacement bits so that we branch
1326 around the unconditional branch. */
1329 /* Now create the unconditional branch + fixup to the final
1331 md_number_to_chars (buffer + 2, 0x00000780, 4);
1332 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
1333 fragP->fr_offset, 1, BFD_RELOC_UNUSED +
1334 (int) fragP->fr_opcode + 1);
1338 /* Out of range unconditional branch. Emit a jump. */
1339 else if (fragP->fr_subtype == 3)
1341 md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4);
1342 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
1343 fragP->fr_offset, 1, BFD_RELOC_UNUSED +
1344 (int) fragP->fr_opcode + 1);
1353 md_section_align (seg, addr)
1357 int align = bfd_get_section_alignment (stdoutput, seg);
1358 return ((addr + (1 << align) - 1) & (-1 << align));
1364 char * prev_name = "";
1365 register const struct v850_opcode * op;
1366 flagword applicable;
1368 if (strncmp (TARGET_CPU, "v850ea", 6) == 0)
1371 machine = bfd_mach_v850ea;
1373 if (processor_mask == -1)
1374 processor_mask = PROCESSOR_V850EA;
1376 else if (strncmp (TARGET_CPU, "v850e", 5) == 0)
1379 machine = bfd_mach_v850e;
1381 if (processor_mask == -1)
1382 processor_mask = PROCESSOR_V850E;
1385 if (strncmp (TARGET_CPU, "v850", 4) == 0)
1390 if (processor_mask == -1)
1391 processor_mask = PROCESSOR_V850;
1394 /* xgettext:c-format */
1395 as_bad (_("Unable to determine default target processor from string: %s"),
1398 v850_hash = hash_new();
1400 /* Insert unique names into hash table. The V850 instruction set
1401 has many identical opcode names that have different opcodes based
1402 on the operands. This hash table then provides a quick index to
1403 the first opcode with a particular name in the opcode table. */
1408 if (strcmp (prev_name, op->name))
1410 prev_name = (char *) op->name;
1411 hash_insert (v850_hash, op->name, (char *) op);
1416 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1418 applicable = bfd_applicable_section_flags (stdoutput);
1420 call_table_data_section = subseg_new (".call_table_data", 0);
1421 bfd_set_section_flags (stdoutput, call_table_data_section,
1422 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1423 | SEC_DATA | SEC_HAS_CONTENTS));
1425 call_table_text_section = subseg_new (".call_table_text", 0);
1426 bfd_set_section_flags (stdoutput, call_table_text_section,
1427 applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1430 /* Restore text section as the current default. */
1431 subseg_set (text_section, 0);
1435 static bfd_reloc_code_real_type
1436 handle_ctoff (const struct v850_operand * operand)
1438 if (operand == NULL)
1439 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1441 if ( operand->bits != 6
1442 || operand->shift != 0)
1444 as_bad (_("ctoff() relocation used on an instruction which does not support it"));
1445 return BFD_RELOC_64; /* Used to indicate an error condition. */
1448 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1451 static bfd_reloc_code_real_type
1452 handle_sdaoff (const struct v850_operand * operand)
1454 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1455 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1456 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1458 if ( operand->bits != 16
1459 || operand->shift != 16)
1461 as_bad (_("sdaoff() relocation used on an instruction which does not support it"));
1462 return BFD_RELOC_64; /* Used to indicate an error condition. */
1465 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1468 static bfd_reloc_code_real_type
1469 handle_zdaoff (const struct v850_operand * operand)
1471 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1472 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1473 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1475 if ( operand->bits != 16
1476 || operand->shift != 16)
1478 as_bad (_("zdaoff() relocation used on an instruction which does not support it"));
1479 return BFD_RELOC_64; /* Used to indicate an error condition. */
1482 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1485 static bfd_reloc_code_real_type
1486 handle_tdaoff (const struct v850_operand * operand)
1488 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1489 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1490 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1491 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1492 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1494 if (operand->bits != 7)
1496 as_bad (_("tdaoff() relocation used on an instruction which does not support it"));
1497 return BFD_RELOC_64; /* Used to indicate an error condition. */
1500 return operand->insert != NULL
1501 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1502 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1505 /* Warning: The code in this function relies upon the definitions
1506 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1507 matching the hard coded values contained herein. */
1509 static bfd_reloc_code_real_type
1510 v850_reloc_prefix (const struct v850_operand * operand)
1512 boolean paren_skipped = false;
1515 /* Skip leading opening parenthesis. */
1516 if (* input_line_pointer == '(')
1518 ++ input_line_pointer;
1519 paren_skipped = true;
1522 #define CHECK_(name, reloc) \
1523 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1525 input_line_pointer += strlen (name); \
1529 CHECK_ ("hi0", BFD_RELOC_HI16);
1530 CHECK_ ("hi", BFD_RELOC_HI16_S);
1531 CHECK_ ("lo", BFD_RELOC_LO16);
1532 CHECK_ ("sdaoff", handle_sdaoff (operand));
1533 CHECK_ ("zdaoff", handle_zdaoff (operand));
1534 CHECK_ ("tdaoff", handle_tdaoff (operand));
1535 CHECK_ ("hilo", BFD_RELOC_32);
1536 CHECK_ ("ctoff", handle_ctoff (operand));
1538 /* Restore skipped parenthesis. */
1540 -- input_line_pointer;
1542 return BFD_RELOC_UNUSED;
1545 /* Insert an operand value into an instruction. */
1547 static unsigned long
1548 v850_insert_operand (insn, operand, val, file, line, str)
1550 const struct v850_operand * operand;
1556 if (operand->insert)
1558 const char * message = NULL;
1560 insn = operand->insert (insn, val, & message);
1561 if (message != NULL)
1563 if ((operand->flags & V850_OPERAND_SIGNED)
1564 && ! warn_signed_overflows
1565 && strstr (message, "out of range") != NULL)
1567 /* skip warning... */
1569 else if ((operand->flags & V850_OPERAND_SIGNED) == 0
1570 && ! warn_unsigned_overflows
1571 && strstr (message, "out of range") != NULL)
1573 /* skip warning... */
1577 if (file == (char *) NULL)
1578 as_warn ("%s: %s", str, message);
1580 as_warn_where (file, line, "%s: %s", str, message);
1584 if (file == (char *) NULL)
1587 as_warn_where (file, line, message);
1593 if (operand->bits != 32)
1597 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1599 if (! warn_signed_overflows)
1600 max = (1 << operand->bits) - 1;
1602 max = (1 << (operand->bits - 1)) - 1;
1604 min = - (1 << (operand->bits - 1));
1608 max = (1 << operand->bits) - 1;
1610 if (! warn_unsigned_overflows)
1611 min = - (1 << (operand->bits - 1));
1616 if (val < (offsetT) min || val > (offsetT) max)
1618 /* xgettext:c-format */
1619 const char * err = _("operand out of range (%s not between %ld and %ld)");
1622 /* Restore min and mix to expected values for decimal ranges. */
1623 if ((operand->flags & V850_OPERAND_SIGNED)
1624 && ! warn_signed_overflows)
1625 max = (1 << (operand->bits - 1)) - 1;
1627 if (! (operand->flags & V850_OPERAND_SIGNED)
1628 && ! warn_unsigned_overflows)
1633 sprintf (buf, "%s: ", str);
1635 sprint_value (buf + strlen (buf), val);
1638 sprint_value (buf, val);
1640 if (file == (char *) NULL)
1641 as_warn (err, buf, min, max);
1643 as_warn_where (file, line, err, buf, min, max);
1647 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1654 static char copy_of_instruction [128];
1661 char * start_of_operands;
1662 struct v850_opcode * opcode;
1663 struct v850_opcode * next_opcode;
1664 const unsigned char * opindex_ptr;
1668 unsigned long insn_size;
1672 boolean extra_data_after_insn = false;
1673 unsigned extra_data_len = 0;
1674 unsigned long extra_data = 0;
1675 char * saved_input_line_pointer;
1678 strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1);
1680 /* Get the opcode. */
1681 for (s = str; *s != '\0' && ! isspace (*s); s++)
1687 /* find the first opcode with the proper name */
1688 opcode = (struct v850_opcode *) hash_find (v850_hash, str);
1691 /* xgettext:c-format */
1692 as_bad (_("Unrecognized opcode: `%s'"), str);
1693 ignore_rest_of_line ();
1698 while (isspace (* str))
1701 start_of_operands = str;
1703 saved_input_line_pointer = input_line_pointer;
1707 const char * errmsg = NULL;
1711 if ((opcode->processors & processor_mask) == 0)
1713 errmsg = _("Target processor does not support this instruction.");
1720 insn = opcode->opcode;
1721 extra_data_after_insn = false;
1723 input_line_pointer = str = start_of_operands;
1725 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr ++)
1727 const struct v850_operand * operand;
1730 bfd_reloc_code_real_type reloc;
1732 if (next_opindex == 0)
1734 operand = & v850_operands[ * opindex_ptr ];
1738 operand = & v850_operands[ next_opindex ];
1744 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1747 if (operand->flags & V850_OPERAND_RELAX)
1750 /* Gather the operand. */
1751 hold = input_line_pointer;
1752 input_line_pointer = str;
1754 /* lo(), hi(), hi0(), etc... */
1755 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1757 /* This is a fake reloc, used to indicate an error condition. */
1758 if (reloc == BFD_RELOC_64)
1766 if (ex.X_op == O_constant)
1770 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1771 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]"
1775 case BFD_RELOC_LO16:
1777 /* Truncate, then sign extend the value. */
1778 ex.X_add_number = SEXT16 (ex.X_add_number);
1782 case BFD_RELOC_HI16:
1784 /* Truncate, then sign extend the value. */
1785 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1789 case BFD_RELOC_HI16_S:
1791 /* Truncate, then sign extend the value. */
1792 int temp = (ex.X_add_number >> 16) & 0xffff;
1794 temp += (ex.X_add_number >> 15) & 1;
1796 ex.X_add_number = SEXT16 (temp);
1801 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1803 errmsg = _("immediate operand is too large");
1807 extra_data_after_insn = true;
1809 extra_data = ex.X_add_number;
1810 ex.X_add_number = 0;
1814 fprintf (stderr, "reloc: %d\n", reloc);
1815 as_bad (_("AAARG -> unhandled constant reloc"));
1819 if (fc > MAX_INSN_FIXUPS)
1820 as_fatal (_("too many fixups"));
1822 fixups[ fc ].exp = ex;
1823 fixups[ fc ].opindex = * opindex_ptr;
1824 fixups[ fc ].reloc = reloc;
1829 if (reloc == BFD_RELOC_32)
1831 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1833 errmsg = _("immediate operand is too large");
1837 extra_data_after_insn = true;
1839 extra_data = ex.X_add_number;
1842 if (fc > MAX_INSN_FIXUPS)
1843 as_fatal (_("too many fixups"));
1845 fixups[ fc ].exp = ex;
1846 fixups[ fc ].opindex = * opindex_ptr;
1847 fixups[ fc ].reloc = reloc;
1855 if ((operand->flags & V850_OPERAND_REG) != 0)
1857 if (!register_name (& ex))
1859 errmsg = _("invalid register name");
1861 else if ((operand->flags & V850_NOT_R0)
1862 && ex.X_add_number == 0)
1864 errmsg = _("register r0 cannot be used here");
1866 /* Force an error message to be generated by
1867 skipping over any following potential matches
1872 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1874 if (!system_register_name (& ex, true, false))
1876 errmsg = _("invalid system register name");
1879 else if ((operand->flags & V850_OPERAND_EP) != 0)
1881 char * start = input_line_pointer;
1882 char c = get_symbol_end ();
1884 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1886 /* Put things back the way we found them. */
1887 *input_line_pointer = c;
1888 input_line_pointer = start;
1889 errmsg = _("expected EP register");
1893 *input_line_pointer = c;
1894 str = input_line_pointer;
1895 input_line_pointer = hold;
1897 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1901 else if ((operand->flags & V850_OPERAND_CC) != 0)
1903 if (!cc_name (& ex))
1905 errmsg = _("invalid condition code name");
1908 else if (operand->flags & V850E_PUSH_POP)
1910 errmsg = parse_register_list (& insn, operand);
1912 /* The parse_register_list() function has already done
1913 everything, so fake a dummy expression. */
1914 ex.X_op = O_constant;
1915 ex.X_add_number = 0;
1917 else if (operand->flags & V850E_IMMEDIATE16)
1921 if (ex.X_op != O_constant)
1922 errmsg = _("constant expression expected");
1923 else if (ex.X_add_number & 0xffff0000)
1925 if (ex.X_add_number & 0xffff)
1926 errmsg = _("constant too big to fit into instruction");
1927 else if ((insn & 0x001fffc0) == 0x00130780)
1928 ex.X_add_number >>= 16;
1930 errmsg = _("constant too big to fit into instruction");
1933 extra_data_after_insn = true;
1935 extra_data = ex.X_add_number;
1936 ex.X_add_number = 0;
1938 else if (operand->flags & V850E_IMMEDIATE32)
1942 if (ex.X_op != O_constant)
1943 errmsg = _("constant expression expected");
1945 extra_data_after_insn = true;
1947 extra_data = ex.X_add_number;
1948 ex.X_add_number = 0;
1950 else if (register_name (& ex)
1951 && (operand->flags & V850_OPERAND_REG) == 0)
1956 /* It is possible that an alias has been defined that
1957 matches a register name. For example the code may
1958 include a ".set ZERO, 0" directive, which matches
1959 the register name "zero". Attempt to reparse the
1960 field as an expression, and only complain if we
1961 cannot generate a constant. */
1963 input_line_pointer = str;
1965 c = get_symbol_end ();
1967 if (symbol_find (str) != NULL)
1970 * input_line_pointer = c;
1971 input_line_pointer = str;
1975 if (ex.X_op != O_constant)
1977 /* If this register is actually occuring too early on
1978 the parsing of the instruction, (because another
1979 field is missing) then report this. */
1980 if (opindex_ptr[1] != 0
1981 && (v850_operands [opindex_ptr [1]].flags & V850_OPERAND_REG))
1982 errmsg = _("syntax error: value is missing before the register name");
1984 errmsg = _("syntax error: register not expected");
1986 /* If we created a symbol in the process of this test then
1987 delete it now, so that it will not be output with the real
1990 && ex.X_op == O_symbol)
1991 symbol_remove (ex.X_add_symbol,
1992 & symbol_rootP, & symbol_lastP);
1995 else if (system_register_name (& ex, false, false)
1996 && (operand->flags & V850_OPERAND_SRG) == 0)
1998 errmsg = _("syntax error: system register not expected");
2000 else if (cc_name (&ex)
2001 && (operand->flags & V850_OPERAND_CC) == 0)
2003 errmsg = _("syntax error: condition code not expected");
2009 If we are assembling a MOV instruction (or a CALLT.... :-)
2010 and the immediate value does not fit into the bits
2011 available then create a fake error so that the next MOV
2012 instruction will be selected. This one has a 32 bit
2015 if (((insn & 0x07e0) == 0x0200)
2016 && ex.X_op == O_constant
2017 && (ex.X_add_number < (- (1 << (operand->bits - 1)))
2018 || ex.X_add_number > ((1 << operand->bits) - 1)))
2019 errmsg = _("immediate operand is too large");
2025 /* fprintf (stderr, " insn: %x, operand %d, op: %d, add_number: %d\n",
2026 insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number); */
2031 errmsg = _("illegal operand");
2034 errmsg = _("missing operand");
2037 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
2039 errmsg = _("invalid operand");
2042 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2044 copy_of_instruction);
2048 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2050 copy_of_instruction);
2054 /* We need to generate a fixup for this expression. */
2055 if (fc >= MAX_INSN_FIXUPS)
2056 as_fatal (_("too many fixups"));
2058 fixups[ fc ].exp = ex;
2059 fixups[ fc ].opindex = * opindex_ptr;
2060 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
2066 str = input_line_pointer;
2067 input_line_pointer = hold;
2069 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
2078 next_opcode = opcode + 1;
2079 if (next_opcode->name != NULL
2080 && strcmp (next_opcode->name, opcode->name) == 0)
2082 opcode = next_opcode;
2084 /* Skip versions that are not supported by the target
2086 if ((opcode->processors & processor_mask) == 0)
2092 as_bad ("%s: %s", copy_of_instruction, errmsg);
2094 if (* input_line_pointer == ']')
2095 ++ input_line_pointer;
2097 ignore_rest_of_line ();
2098 input_line_pointer = saved_input_line_pointer;
2104 while (isspace (*str))
2108 /* xgettext:c-format */
2109 as_bad (_("junk at end of line: `%s'"), str);
2111 input_line_pointer = str;
2113 /* Write out the instruction. */
2115 if (relaxable && fc > 0)
2120 if (!strcmp (opcode->name, "br"))
2122 f = frag_var (rs_machine_dependent, 4, 2, 2,
2123 fixups[0].exp.X_add_symbol,
2124 fixups[0].exp.X_add_number,
2125 (char *)fixups[0].opindex);
2126 md_number_to_chars (f, insn, insn_size);
2127 md_number_to_chars (f + 2, 0, 2);
2131 f = frag_var (rs_machine_dependent, 6, 4, 0,
2132 fixups[0].exp.X_add_symbol,
2133 fixups[0].exp.X_add_number,
2134 (char *)fixups[0].opindex);
2135 md_number_to_chars (f, insn, insn_size);
2136 md_number_to_chars (f + 2, 0, 4);
2141 /* Four byte insns have an opcode with the two high bits on. */
2142 if ((insn & 0x0600) == 0x0600)
2147 /* Special case: 32 bit MOV */
2148 if ((insn & 0xffe0) == 0x0620)
2151 f = frag_more (insn_size);
2153 md_number_to_chars (f, insn, insn_size);
2155 if (extra_data_after_insn)
2157 f = frag_more (extra_data_len);
2159 md_number_to_chars (f, extra_data, extra_data_len);
2161 extra_data_after_insn = false;
2165 /* Create any fixups. At this point we do not use a
2166 bfd_reloc_code_real_type, but instead just use the
2167 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2168 handle fixups for any operand type, although that is admittedly
2169 not a very exciting feature. We pick a BFD reloc type in
2171 for (i = 0; i < fc; i++)
2173 const struct v850_operand * operand;
2174 bfd_reloc_code_real_type reloc;
2176 operand = & v850_operands[ fixups[i].opindex ];
2178 reloc = fixups[i].reloc;
2180 if (reloc != BFD_RELOC_UNUSED)
2182 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput,
2191 size = bfd_get_reloc_size (reloc_howto);
2193 /* XXX This will abort on an R_V850_8 reloc -
2194 is this reloc actually used ? */
2195 if (size != 2 && size != 4)
2198 address = (f - frag_now->fr_literal) + insn_size - size;
2200 if (reloc == BFD_RELOC_32)
2205 fixP = fix_new_exp (frag_now, address, size,
2207 reloc_howto->pc_relative,
2212 case BFD_RELOC_LO16:
2213 case BFD_RELOC_HI16:
2214 case BFD_RELOC_HI16_S:
2215 fixP->fx_no_overflow = 1;
2225 f - frag_now->fr_literal, 4,
2227 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
2228 (bfd_reloc_code_real_type) (fixups[i].opindex
2229 + (int) BFD_RELOC_UNUSED)
2234 input_line_pointer = saved_input_line_pointer;
2238 /* If while processing a fixup, a reloc really needs to be created */
2239 /* then it is done here. */
2242 tc_gen_reloc (seg, fixp)
2243 asection * seg ATTRIBUTE_UNUSED;
2248 reloc = (arelent *) xmalloc (sizeof (arelent));
2249 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2250 *reloc->sym_ptr_ptr= symbol_get_bfdsym (fixp->fx_addsy);
2251 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2252 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
2254 if (reloc->howto == (reloc_howto_type *) NULL)
2256 as_bad_where (fixp->fx_file, fixp->fx_line,
2257 /* xgettext:c-format */
2258 _("reloc %d not supported by object file format"),
2259 (int) fixp->fx_r_type);
2266 if ( fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY
2267 || fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT)
2268 reloc->addend = fixp->fx_offset;
2270 reloc->addend = fixp->fx_addnumber;
2275 /* Assume everything will fit in two bytes, then expand as necessary. */
2277 md_estimate_size_before_relax (fragp, seg)
2279 asection * seg ATTRIBUTE_UNUSED;
2281 if (fragp->fr_subtype == 0)
2283 else if (fragp->fr_subtype == 2)
2291 v850_pcrel_from_section (fixp, section)
2295 /* If the symbol is undefined, or in a section other than our own,
2296 or it is weak (in which case it may well be in another section,
2297 then let the linker figure it out. */
2298 if (fixp->fx_addsy != (symbolS *) NULL
2299 && (! S_IS_DEFINED (fixp->fx_addsy)
2300 || S_IS_WEAK (fixp->fx_addsy)
2301 || (S_GET_SEGMENT (fixp->fx_addsy) != section)))
2304 return fixp->fx_frag->fr_address + fixp->fx_where;
2308 md_apply_fix3 (fixp, valuep, seg)
2311 segT seg ATTRIBUTE_UNUSED;
2316 if ( fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
2317 || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
2323 if (fixp->fx_addsy == (symbolS *) NULL)
2328 else if (fixp->fx_pcrel)
2332 value = fixp->fx_offset;
2333 if (fixp->fx_subsy != (symbolS *) NULL)
2335 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
2336 value -= S_GET_VALUE (fixp->fx_subsy);
2339 /* We don't actually support subtracting a symbol. */
2340 as_bad_where (fixp->fx_file, fixp->fx_line,
2341 _("expression too complex"));
2346 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
2349 const struct v850_operand * operand;
2352 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
2353 operand = & v850_operands[ opindex ];
2355 /* Fetch the instruction, insert the fully resolved operand
2356 value, and stuff the instruction back again.
2358 Note the instruction has been stored in little endian
2360 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2362 insn = bfd_getl32 ((unsigned char *) where);
2363 insn = v850_insert_operand (insn, operand, (offsetT) value,
2364 fixp->fx_file, fixp->fx_line, NULL);
2365 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
2369 /* Nothing else to do here. */
2373 /* Determine a BFD reloc value based on the operand information.
2374 We are only prepared to turn a few of the operands into relocs. */
2376 if (operand->bits == 22)
2377 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
2378 else if (operand->bits == 9)
2379 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
2382 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
2384 as_bad_where (fixp->fx_file, fixp->fx_line,
2385 _("unresolved expression that must be resolved"));
2390 else if (fixp->fx_done)
2392 /* We still have to insert the value into memory! */
2393 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2395 if (fixp->fx_size == 1)
2396 * where = value & 0xff;
2397 else if (fixp->fx_size == 2)
2398 bfd_putl16 (value & 0xffff, (unsigned char *) where);
2399 else if (fixp->fx_size == 4)
2400 bfd_putl32 (value, (unsigned char *) where);
2403 fixp->fx_addnumber = value;
2408 /* Parse a cons expression. We have to handle hi(), lo(), etc
2411 parse_cons_expression_v850 (exp)
2414 /* See if there's a reloc prefix like hi() we have to handle. */
2415 hold_cons_reloc = v850_reloc_prefix (NULL);
2417 /* Do normal expression parsing. */
2421 /* Create a fixup for a cons expression. If parse_cons_expression_v850
2422 found a reloc prefix, then we use that reloc, else we choose an
2423 appropriate one based on the size of the expression. */
2425 cons_fix_new_v850 (frag, where, size, exp)
2431 if (hold_cons_reloc == BFD_RELOC_UNUSED)
2434 hold_cons_reloc = BFD_RELOC_32;
2436 hold_cons_reloc = BFD_RELOC_16;
2438 hold_cons_reloc = BFD_RELOC_8;
2442 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
2444 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
2448 v850_fix_adjustable (fixP)
2451 if (fixP->fx_addsy == NULL)
2454 /* Prevent all adjustments to global symbols. */
2455 if (S_IS_EXTERN (fixP->fx_addsy))
2458 /* Similarly for weak symbols. */
2459 if (S_IS_WEAK (fixP->fx_addsy))
2462 /* Don't adjust function names */
2463 if (S_IS_FUNCTION (fixP->fx_addsy))
2466 /* We need the symbol name for the VTABLE entries */
2467 if ( fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
2468 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
2475 v850_force_relocation (fixP)
2478 if (fixP->fx_addsy && S_IS_WEAK (fixP->fx_addsy))
2481 if ( fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
2482 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)