1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright (C) 1996, 1997 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"
27 /* sign-extend a 16-bit number */
28 #define SEXT16(x) ((((x) & 0xffff) ^ (~ 0x7fff)) + 0x8000)
30 /* Temporarily holds the reloc in a cons expression. */
31 static bfd_reloc_code_real_type hold_cons_reloc;
33 /* Set to TRUE if we want to be pedantic about signed overflows. */
34 static boolean warn_signed_overflows = FALSE;
35 static boolean warn_unsigned_overflows = FALSE;
37 /* Indicates the target BFD machine number. */
38 static int machine = -1;
40 /* Indicates the target processor(s) for the assemble. */
41 static unsigned int processor_mask = -1;
44 /* Structure to hold information about predefined registers. */
51 /* Generic assembler global variables which must be defined by all targets. */
53 /* Characters which always start a comment. */
54 const char comment_chars[] = "#";
56 /* Characters which start a comment at the beginning of a line. */
57 const char line_comment_chars[] = ";#";
59 /* Characters which may be used to separate multiple commands on a
61 const char line_separator_chars[] = ";";
63 /* Characters which are used to indicate an exponent in a floating
65 const char EXP_CHARS[] = "eE";
67 /* Characters which mean that a number is a floating point constant,
69 const char FLT_CHARS[] = "dD";
72 const relax_typeS md_relax_table[] = {
74 {0x1fffff, -0x200000, 6, 0},
78 static segT sdata_section = NULL;
79 static segT tdata_section = NULL;
80 static segT zdata_section = NULL;
81 static segT sbss_section = NULL;
82 static segT tbss_section = NULL;
83 static segT zbss_section = NULL;
84 static segT rosdata_section = NULL;
85 static segT rozdata_section = NULL;
86 /* start-sanitize-v850e */
87 static segT call_table_data_section = NULL;
88 static segT call_table_text_section = NULL;
89 /* end-sanitize-v850e */
93 static unsigned long v850_insert_operand
94 PARAMS ((unsigned long insn, const struct v850_operand *operand,
95 offsetT val, char *file, unsigned int line));
99 #define MAX_INSN_FIXUPS (5)
104 bfd_reloc_code_real_type reloc;
106 struct v850_fixup fixups[MAX_INSN_FIXUPS];
110 v850_sdata (int ignore)
112 subseg_set (sdata_section, (subsegT) get_absolute_expression ());
114 demand_empty_rest_of_line ();
118 v850_tdata (int ignore)
120 subseg_set (tdata_section, (subsegT) get_absolute_expression ());
122 demand_empty_rest_of_line ();
126 v850_zdata (int ignore)
128 subseg_set (zdata_section, (subsegT) get_absolute_expression ());
130 demand_empty_rest_of_line ();
134 v850_sbss (int ignore)
136 subseg_set (sbss_section, (subsegT) get_absolute_expression ());
138 demand_empty_rest_of_line ();
142 v850_tbss (int ignore)
144 subseg_set (tbss_section, (subsegT) get_absolute_expression ());
146 demand_empty_rest_of_line ();
150 v850_zbss (int ignore)
152 subseg_set (zbss_section, (subsegT) get_absolute_expression ());
154 demand_empty_rest_of_line ();
158 v850_rosdata (int ignore)
160 subseg_set (rosdata_section, (subsegT) get_absolute_expression ());
162 demand_empty_rest_of_line ();
166 v850_rozdata (int ignore)
168 subseg_set (rozdata_section, (subsegT) get_absolute_expression ());
170 demand_empty_rest_of_line ();
173 /* start-sanitize-v850e */
175 v850_call_table_data (int ignore)
177 subseg_set (call_table_data_section, (subsegT) get_absolute_expression ());
179 demand_empty_rest_of_line ();
183 v850_call_table_text (int ignore)
185 subseg_set (call_table_text_section, (subsegT) get_absolute_expression ());
187 demand_empty_rest_of_line ();
189 /* end-sanitize-v850e */
192 v850_section (int arg)
197 for (ptr = input_line_pointer; * ptr != '\n' && * ptr != 0; ptr ++)
198 if (* ptr == ',' && ptr[1] == '.')
204 obj_elf_section (arg);
210 v850_bss (int ignore)
212 register int temp = get_absolute_expression ();
214 obj_elf_section_change_hook();
216 subseg_set (bss_section, (subsegT) temp);
218 demand_empty_rest_of_line ();
222 v850_offset (int ignore)
224 int temp = get_absolute_expression ();
226 temp -= frag_now_fix();
229 (void) frag_more (temp);
231 demand_empty_rest_of_line ();
235 set_machine (int number)
238 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
242 case 0: processor_mask = PROCESSOR_V850; break;
243 /* start-sanitize-v850e */
244 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
245 /* end-sanitize-v850e */
246 /* start-sanitize-v850eq */
247 case bfd_mach_v850eq: processor_mask = PROCESSOR_V850EQ; break;
248 /* end-sanitize-v850eq */
252 /* The target specific pseudo-ops which we support. */
253 const pseudo_typeS md_pseudo_table[] =
255 {"sdata", v850_sdata, 0},
256 {"tdata", v850_tdata, 0},
257 {"zdata", v850_zdata, 0},
258 {"sbss", v850_sbss, 0},
259 {"tbss", v850_tbss, 0},
260 {"zbss", v850_zbss, 0},
261 {"rosdata", v850_rosdata, 0},
262 {"rozdata", v850_rozdata, 0},
263 {"bss", v850_bss, 0},
264 {"offset", v850_offset, 0},
265 {"section", v850_section, 0},
267 {"v850", set_machine, 0},
268 /* start-sanitize-v850e */
269 {"call_table_data", v850_call_table_data, 0},
270 {"call_table_text", v850_call_table_text, 0},
271 {"v850e", set_machine, bfd_mach_v850e},
272 /* end-sanitize-v850e */
273 /* start-sanitize-v850eq */
274 {"v850eq", set_machine, bfd_mach_v850eq},
275 /* end-sanitize-v850eq */
279 /* Opcode hash table. */
280 static struct hash_control *v850_hash;
282 /* This table is sorted. Suitable for searching by a binary search. */
283 static const struct reg_name pre_defined_registers[] =
285 { "ep", 30 }, /* ep - element ptr */
286 { "gp", 4 }, /* gp - global ptr */
287 { "hp", 2 }, /* hp - handler stack ptr */
288 { "lp", 31 }, /* lp - link ptr */
321 { "sp", 3 }, /* sp - stack ptr */
322 { "tp", 5 }, /* tp - text ptr */
325 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
328 static const struct reg_name system_registers[] =
330 /* start-sanitize-v850e */
336 /* end-sanitize-v850e */
344 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
346 static const struct reg_name cc_names[] =
371 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
373 /* reg_name_search does a binary search of the given register table
374 to see if "name" is a valid regiter name. Returns the register
375 number from the array on success, or -1 on failure. */
378 reg_name_search (regs, regcount, name)
379 const struct reg_name * regs;
383 int middle, low, high;
391 middle = (low + high) / 2;
392 cmp = strcasecmp (name, regs[middle].name);
398 return regs[middle].value;
405 /* Summary of register_name().
407 * in: Input_line_pointer points to 1st char of operand.
409 * out: A expressionS.
410 * The operand may have been a register: in this case, X_op == O_register,
411 * X_add_number is set to the register number, and truth is returned.
412 * Input_line_pointer->(next non-blank) char after operand, or is in
413 * its original state.
416 register_name (expressionP)
417 expressionS * expressionP;
424 /* Find the spelling of the operand */
425 start = name = input_line_pointer;
427 c = get_symbol_end ();
429 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
431 * input_line_pointer = c; /* put back the delimiting char */
433 /* look to see if it's in the register table */
436 expressionP->X_op = O_register;
437 expressionP->X_add_number = reg_number;
439 /* make the rest nice */
440 expressionP->X_add_symbol = NULL;
441 expressionP->X_op_symbol = NULL;
447 /* reset the line as if we had not done anything */
448 input_line_pointer = start;
454 /* Summary of system_register_name().
456 * in: Input_line_pointer points to 1st char of operand.
458 * out: A expressionS.
459 * The operand may have been a register: in this case, X_op == O_register,
460 * X_add_number is set to the register number, and truth is returned.
461 * Input_line_pointer->(next non-blank) char after operand, or is in
462 * its original state.
465 system_register_name (expressionP, accept_numbers)
466 expressionS * expressionP;
467 boolean accept_numbers;
474 /* Find the spelling of the operand */
475 start = name = input_line_pointer;
477 c = get_symbol_end ();
478 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name);
480 * input_line_pointer = c; /* put back the delimiting char */
485 input_line_pointer = start; /* reset input_line pointer */
487 if (isdigit (* input_line_pointer))
488 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
490 /* Make sure that the register number is allowable. */
493 /* start-sanitize-v850e */
496 /* end-sanitize-v850e */
503 /* look to see if it's in the register table */
506 expressionP->X_op = O_register;
507 expressionP->X_add_number = reg_number;
509 /* make the rest nice */
510 expressionP->X_add_symbol = NULL;
511 expressionP->X_op_symbol = NULL;
517 /* reset the line as if we had not done anything */
518 input_line_pointer = start;
524 /* Summary of cc_name().
526 * in: Input_line_pointer points to 1st char of operand.
528 * out: A expressionS.
529 * The operand may have been a register: in this case, X_op == O_register,
530 * X_add_number is set to the register number, and truth is returned.
531 * Input_line_pointer->(next non-blank) char after operand, or is in
532 * its original state.
535 cc_name (expressionP)
536 expressionS * expressionP;
543 /* Find the spelling of the operand */
544 start = name = input_line_pointer;
546 c = get_symbol_end ();
547 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name);
549 * input_line_pointer = c; /* put back the delimiting char */
551 /* look to see if it's in the register table */
554 expressionP->X_op = O_constant;
555 expressionP->X_add_number = reg_number;
557 /* make the rest nice */
558 expressionP->X_add_symbol = NULL;
559 expressionP->X_op_symbol = NULL;
565 /* reset the line as if we had not done anything */
566 input_line_pointer = start;
573 skip_white_space (void)
575 while ( * input_line_pointer == ' '
576 || * input_line_pointer == '\t')
577 ++ input_line_pointer;
580 /* start-sanitize-v850e */
581 /* Summary of parse_register_list ().
583 * in: Input_line_pointer points to 1st char of a list of registers.
584 * insn is the partially constructed instruction.
585 * operand is the operand being inserted.
587 * out: True if the parse completed successfully, False otherwise.
588 * If the parse completes the correct bit fields in the
589 * instruction will be filled in.
591 * Parses register lists with the syntax:
599 * and also parses constant epxressions whoes bits indicate the
600 * registers in the lists. The LSB in the expression refers to
601 * the lowest numbered permissable register in the register list,
602 * and so on upwards. System registers are considered to be very
609 unsigned long * insn,
610 const struct v850_operand * operand
613 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 };
614 /* start-sanitize-v850eq */
615 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 };
616 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 };
617 /* end-sanitize-v850eq */
622 /* Select a register array to parse. */
623 switch (operand->shift)
625 case 0xffe00001: regs = type1_regs; break;
626 /* start-sanitize-v850eq */
627 case 0xfff8000f: regs = type2_regs; break;
628 case 0xfff8001f: regs = type3_regs; break;
629 /* end-sanitize-v850eq */
631 as_bad ("unknown operand shift: %x\n", operand->shift );
632 return "internal failure in parse_register_list";
637 /* If the expression starts with a curly brace it is a register list.
638 Otherwise it is a constant expression ,whoes bits indicate which
639 registers are to be included in the list. */
641 if (* input_line_pointer != '{')
649 if (exp.X_op != O_constant)
650 return "constant expression or register list expected";
652 /* start-sanitize-v850eq */
653 if (regs == type1_regs)
654 /* end-sanitize-v850eq */
656 if (exp.X_add_number & 0xFFFFF000)
657 return "high bits set in register list expression";
659 for (reg = 20; reg < 32; reg ++)
660 if (exp.X_add_number & (1 << (reg - 20)))
662 for (i = 0; i < 32; i++)
667 /* start-sanitize-v850eq */
668 else if (regs == type2_regs)
670 if (exp.X_add_number & 0xFFFE0000)
671 return "high bits set in register list expression";
673 for (reg = 1; reg < 16; reg ++)
674 if (exp.X_add_number & (1 << (reg - 1)))
676 for (i = 0; i < 32; i++)
681 if (exp.X_add_number & (1 << 15))
684 if (exp.X_add_number & (1 << 16))
687 else /* regs == type3_regs */
689 if (exp.X_add_number & 0xFFFE0000)
690 return "high bits set in register list expression";
692 for (reg = 16; reg < 32; reg ++)
693 if (exp.X_add_number & (1 << (reg - 16)))
695 for (i = 0; i < 32; i++)
700 if (exp.X_add_number & (1 << 16))
703 /* end-sanitize-v850eq */
708 input_line_pointer ++;
710 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
713 if (register_name (& exp))
717 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
718 for (i = 0; i < 32; i++)
720 if (regs[ i ] == exp.X_add_number)
729 return "illegal register included in list";
732 else if (system_register_name (& exp, true))
734 if (regs == type1_regs)
736 return "system registers cannot be included in list";
738 else if (exp.X_add_number == 5)
740 if (regs == type2_regs)
741 return "PSW cannot be included in list";
748 else if (* input_line_pointer == '}')
750 input_line_pointer ++;
753 else if (* input_line_pointer == ',')
755 input_line_pointer ++;
758 else if (* input_line_pointer == '-')
760 /* We have encountered a range of registers: rX - rY */
765 ++ input_line_pointer;
767 /* Get the second register in the range. */
768 if (! register_name (& exp2))
770 return "second register should follow dash in register list";
771 exp2.X_add_number = exp.X_add_number;
774 /* Add the rest of the registers in the range. */
775 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
779 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
780 for (i = 0; i < 32; i++)
791 return "illegal register included in list";
805 /* end-sanitize-v850e */
807 CONST char * md_shortopts = "m:";
809 struct option md_longopts[] =
811 {NULL, no_argument, NULL, 0}
813 size_t md_longopts_size = sizeof md_longopts;
817 md_show_usage (stream)
820 fprintf (stream, "V850 options:\n");
821 fprintf (stream, "\t-wsigned_overflow Warn if signed immediate values overflow\n");
822 fprintf (stream, "\t-wunsigned_overflow Warn if unsigned immediate values overflow\n");
823 fprintf (stream, "\t-mv850 The code is targeted at the v850\n");
824 /* start-sanitize-v850e */
825 fprintf (stream, "\t-mv850e The code is targeted at the v850e\n");
826 /* end-sanitize-v850e */
827 /* start-sanitize-v850eq */
828 fprintf (stream, "\t-mv850eq The code is targeted at the v850eq\n");
829 /* end-sanitize-v850eq */
833 md_parse_option (c, arg)
840 if (strcmp (arg, "signed_overflow") == 0)
842 warn_signed_overflows = TRUE;
845 else if (strcmp (arg, "unsigned_overflow") == 0)
847 warn_unsigned_overflows = TRUE;
853 if (strcmp (arg, "v850") == 0)
856 processor_mask = PROCESSOR_V850;
859 /* start-sanitize-v850e */
860 else if (strcmp (arg, "v850e") == 0)
862 machine = bfd_mach_v850e;
863 processor_mask = PROCESSOR_V850E;
866 /* end-sanitize-v850e */
867 /* start-sanitize-v850eq */
868 else if (strcmp (arg, "v850eq") == 0)
870 machine = bfd_mach_v850eq;
871 processor_mask = PROCESSOR_V850EQ;
874 /* end-sanitize-v850eq */
882 md_undefined_symbol (name)
889 md_atof (type, litp, sizep)
895 LITTLENUM_TYPE words[4];
911 return "bad call to md_atof";
914 t = atof_ieee (input_line_pointer, type, words);
916 input_line_pointer = t;
920 for (i = prec - 1; i >= 0; i--)
922 md_number_to_chars (litp, (valueT) words[i], 2);
932 md_convert_frag (abfd, sec, fragP)
937 subseg_change (sec, 0);
938 if (fragP->fr_subtype == 0)
940 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
941 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
945 else if (fragP->fr_subtype == 1)
947 /* Reverse the condition of the first branch. */
948 fragP->fr_literal[0] &= 0xf7;
949 /* Mask off all the displacement bits. */
950 fragP->fr_literal[0] &= 0x8f;
951 fragP->fr_literal[1] &= 0x07;
952 /* Now set the displacement bits so that we branch
953 around the unconditional branch. */
954 fragP->fr_literal[0] |= 0x30;
956 /* Now create the unconditional branch + fixup to the final
958 md_number_to_chars (&fragP->fr_literal[2], 0x00000780, 4);
959 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
960 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode + 1);
969 md_section_align (seg, addr)
973 int align = bfd_get_section_alignment (stdoutput, seg);
974 return ((addr + (1 << align) - 1) & (-1 << align));
980 char * prev_name = "";
981 register const struct v850_opcode * op;
984 /* start-sanitize-v850eq */
985 if (strncmp (TARGET_CPU, "v850eq", 6) == 0)
988 machine = bfd_mach_v850eq;
990 if (processor_mask == -1)
991 processor_mask = PROCESSOR_V850EQ;
994 /* end-sanitize-v850eq */
995 /* start-sanitize-v850e */
996 if (strncmp (TARGET_CPU, "v850e", 5) == 0)
999 machine = bfd_mach_v850e;
1001 if (processor_mask == -1)
1002 processor_mask = PROCESSOR_V850E;
1005 /* end-sanitize-v850e */
1006 if (strncmp (TARGET_CPU, "v850", 4) == 0)
1011 if (processor_mask == -1)
1012 processor_mask = PROCESSOR_V850;
1015 as_bad ("Unable to determine default target processor from string: %s",
1018 v850_hash = hash_new();
1020 /* Insert unique names into hash table. The V850 instruction set
1021 has many identical opcode names that have different opcodes based
1022 on the operands. This hash table then provides a quick index to
1023 the first opcode with a particular name in the opcode table. */
1028 if (strcmp (prev_name, op->name))
1030 prev_name = (char *) op->name;
1031 hash_insert (v850_hash, op->name, (char *) op);
1036 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1038 applicable = bfd_applicable_section_flags (stdoutput);
1040 sdata_section = subseg_new (".sdata", 0);
1041 bfd_set_section_flags (stdoutput, sdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1043 tdata_section = subseg_new (".tdata", 0);
1044 bfd_set_section_flags (stdoutput, tdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1046 zdata_section = subseg_new (".zdata", 0);
1047 bfd_set_section_flags (stdoutput, zdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1049 sbss_section = subseg_new (".sbss", 0);
1050 bfd_set_section_flags (stdoutput, sbss_section, applicable & SEC_ALLOC);
1052 tbss_section = subseg_new (".tbss", 0);
1053 bfd_set_section_flags (stdoutput, tbss_section, applicable & SEC_ALLOC);
1055 zbss_section = subseg_new (".zbss", 0);
1056 bfd_set_section_flags (stdoutput, zbss_section, applicable & SEC_ALLOC);
1058 rosdata_section = subseg_new (".rosdata", 0);
1059 bfd_set_section_flags (stdoutput, rosdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY));
1061 rozdata_section = subseg_new (".rozdata", 0);
1062 bfd_set_section_flags (stdoutput, rozdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY));
1064 /* start-sanitize-v850e */
1065 call_table_data_section = subseg_new (".call_table_data", 0);
1066 bfd_set_section_flags (stdoutput, call_table_data_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1068 call_table_text_section = subseg_new (".call_table_text", 0);
1069 bfd_set_section_flags (stdoutput, call_table_text_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE));
1070 /* end-sanitize-v850e */
1074 /* start-sanitize-v850e */
1075 static bfd_reloc_code_real_type
1076 handle_ctoff (const struct v850_operand * operand)
1078 if (operand == NULL)
1079 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1081 if ( operand->bits != 6
1082 || operand->shift != 0)
1084 as_bad ("ctoff() relocation used on an instruction which does not support it");
1085 return BFD_RELOC_64; /* Used to indicate an error condition. */
1088 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1090 /* end-sanitize-v850e */
1092 static bfd_reloc_code_real_type
1093 handle_sdaoff (const struct v850_operand * operand)
1095 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1096 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1097 /* start-sanitize-v850e */
1098 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1099 /* end-sanitize-v850e */
1101 if ( operand->bits != 16
1102 || operand->shift != 16)
1104 as_bad ("sdaoff() relocation used on an instruction which does not support it");
1105 return BFD_RELOC_64; /* Used to indicate an error condition. */
1108 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1111 static bfd_reloc_code_real_type
1112 handle_zdaoff (const struct v850_operand * operand)
1114 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1115 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1116 /* start-sanitize-v850e */
1117 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1118 /* end-sanitize-v850e */
1120 if ( operand->bits != 16
1121 || operand->shift != 16)
1123 as_bad ("zdaoff() relocation used on an instruction which does not support it");
1124 return BFD_RELOC_64; /* Used to indicate an error condition. */
1127 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1130 static bfd_reloc_code_real_type
1131 handle_tdaoff (const struct v850_operand * operand)
1133 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1134 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1135 /* start-sanitize-v850e */
1136 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1137 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1138 /* end-sanitize-v850e */
1139 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1141 if (operand->bits != 7)
1143 as_bad ("tdaoff() relocation used on an instruction which does not support it");
1144 return BFD_RELOC_64; /* Used to indicate an error condition. */
1147 return operand->insert != NULL
1148 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1149 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1152 /* Warning: The code in this function relies upon the definitions
1153 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1154 matching the hard coded values contained herein. */
1156 static bfd_reloc_code_real_type
1157 v850_reloc_prefix (const struct v850_operand * operand)
1159 boolean paren_skipped = false;
1162 /* Skip leading opening parenthesis. */
1163 if (* input_line_pointer == '(')
1165 ++ input_line_pointer;
1166 paren_skipped = true;
1169 #define CHECK_(name, reloc) \
1170 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1172 input_line_pointer += strlen (name); \
1176 CHECK_ ("hi0", BFD_RELOC_HI16);
1177 CHECK_ ("hi", BFD_RELOC_HI16_S);
1178 CHECK_ ("lo", BFD_RELOC_LO16);
1179 CHECK_ ("sdaoff", handle_sdaoff (operand));
1180 CHECK_ ("zdaoff", handle_zdaoff (operand));
1181 CHECK_ ("tdaoff", handle_tdaoff (operand));
1183 /* start-sanitize-v850e */
1184 CHECK_ ("hilo", BFD_RELOC_32);
1185 CHECK_ ("ctoff", handle_ctoff (operand));
1186 /* end-sanitize-v850e */
1188 /* Restore skipped parenthesis. */
1190 -- input_line_pointer;
1192 return BFD_RELOC_UNUSED;
1200 char * start_of_operands;
1201 struct v850_opcode * opcode;
1202 struct v850_opcode * next_opcode;
1203 const unsigned char * opindex_ptr;
1207 unsigned long insn_size;
1211 boolean extra_data_after_insn = false;
1212 unsigned extra_data_len;
1213 unsigned long extra_data;
1214 char * saved_input_line_pointer;
1216 /* Get the opcode. */
1217 for (s = str; *s != '\0' && ! isspace (*s); s++)
1223 /* find the first opcode with the proper name */
1224 opcode = (struct v850_opcode *)hash_find (v850_hash, str);
1227 as_bad ("Unrecognized opcode: `%s'", str);
1228 ignore_rest_of_line ();
1233 while (isspace (* str))
1236 start_of_operands = str;
1238 saved_input_line_pointer = input_line_pointer;
1242 const char * errmsg = NULL;
1246 if ((opcode->processors & processor_mask) == 0)
1248 errmsg = "Target processor does not support this instruction.";
1255 insn = opcode->opcode;
1256 extra_data_after_insn = false;
1258 input_line_pointer = str = start_of_operands;
1260 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1262 const struct v850_operand * operand;
1265 bfd_reloc_code_real_type reloc;
1267 if (next_opindex == 0)
1269 operand = & v850_operands[ * opindex_ptr ];
1273 operand = & v850_operands[ next_opindex ];
1279 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1282 if (operand->flags & V850_OPERAND_RELAX)
1285 /* Gather the operand. */
1286 hold = input_line_pointer;
1287 input_line_pointer = str;
1289 /* lo(), hi(), hi0(), etc... */
1290 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1292 if (reloc == BFD_RELOC_64) /* This is a fake reloc, used to indicate an error condition. */
1300 if (ex.X_op == O_constant)
1304 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1305 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]" and the like. */
1308 case BFD_RELOC_LO16:
1310 /* Truncate, then sign extend the value. */
1311 ex.X_add_number = SEXT16 (ex.X_add_number);
1315 case BFD_RELOC_HI16:
1317 /* Truncate, then sign extend the value. */
1318 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1322 case BFD_RELOC_HI16_S:
1324 /* Truncate, then sign extend the value. */
1325 int temp = (ex.X_add_number >> 16) & 0xffff;
1327 temp += (ex.X_add_number >> 15) & 1;
1329 ex.X_add_number = SEXT16 (temp);
1333 /* start-sanitize-v850e */
1335 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1337 errmsg = "use bigger instruction";
1341 extra_data_after_insn = true;
1343 extra_data = ex.X_add_number;
1344 ex.X_add_number = 0;
1346 /* end-sanitize-v850e */
1349 fprintf (stderr, "reloc: %d\n", reloc);
1350 as_bad ("AAARG -> unhandled constant reloc");
1354 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1359 if (reloc == BFD_RELOC_32)
1361 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1363 errmsg = "use bigger instruction";
1367 extra_data_after_insn = true;
1369 extra_data = ex.X_add_number;
1370 ex.X_add_number = 0;
1373 if (fc > MAX_INSN_FIXUPS)
1374 as_fatal ("too many fixups");
1376 fixups[ fc ].exp = ex;
1377 fixups[ fc ].opindex = * opindex_ptr;
1378 fixups[ fc ].reloc = reloc;
1386 if ((operand->flags & V850_OPERAND_REG) != 0)
1388 if (!register_name (& ex))
1390 errmsg = "invalid register name";
1393 if ((operand->flags & V850_NOT_R0)
1394 && ex.X_add_number == 0)
1396 errmsg = "register r0 cannot be used here";
1399 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1401 if (!system_register_name (& ex, true))
1403 errmsg = "invalid system register name";
1406 else if ((operand->flags & V850_OPERAND_EP) != 0)
1408 char * start = input_line_pointer;
1409 char c = get_symbol_end ();
1411 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1413 /* Put things back the way we found them. */
1414 *input_line_pointer = c;
1415 input_line_pointer = start;
1416 errmsg = "expected EP register";
1420 *input_line_pointer = c;
1421 str = input_line_pointer;
1422 input_line_pointer = hold;
1424 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1428 else if ((operand->flags & V850_OPERAND_CC) != 0)
1430 if (!cc_name (& ex))
1432 errmsg = "invalid condition code name";
1435 /* start-sanitize-v850e */
1436 else if (operand->flags & V850E_PUSH_POP)
1438 errmsg = parse_register_list (& insn, operand);
1440 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1441 ex.X_op = O_constant;
1442 ex.X_add_number = 0;
1444 else if (operand->flags & V850E_IMMEDIATE16)
1448 if (ex.X_op != O_constant)
1449 errmsg = "constant expression expected";
1450 else if (ex.X_add_number & 0xffff0000)
1452 if (ex.X_add_number & 0xffff)
1453 errmsg = "constant too big to fit into instruction";
1454 else if ((insn & 0x001fffc0) == 0x00130780)
1455 ex.X_add_number >>= 16;
1457 errmsg = "constant too big to fit into instruction";
1460 extra_data_after_insn = true;
1462 extra_data = ex.X_add_number;
1463 ex.X_add_number = 0;
1465 else if (operand->flags & V850E_IMMEDIATE32)
1469 if (ex.X_op != O_constant)
1470 errmsg = "constant expression expected";
1472 extra_data_after_insn = true;
1474 extra_data = ex.X_add_number;
1475 ex.X_add_number = 0;
1477 /* end-sanitize-v850e */
1478 else if (register_name (&ex)
1479 && (operand->flags & V850_OPERAND_REG) == 0)
1481 errmsg = "syntax error: register not expected";
1483 else if (system_register_name (& ex, false)
1484 && (operand->flags & V850_OPERAND_SRG) == 0)
1486 errmsg = "syntax error: system register not expected";
1488 else if (cc_name (&ex)
1489 && (operand->flags & V850_OPERAND_CC) == 0)
1491 errmsg = "syntax error: condition code not expected";
1496 /* start-sanitize-v850e */
1498 If we are assembling a MOV instruction (or a CALLT.... :-)
1499 and the immediate value does not fit into the bits available
1500 then create a fake error so that the next MOV instruction
1501 will be selected. This one has a 32 bit immediate field. */
1503 if (((insn & 0x07e0) == 0x0200)
1504 && ex.X_op == O_constant
1505 && (ex.X_add_number < (- (1 << (operand->bits - 1))) || ex.X_add_number > ((1 << operand->bits) - 1)))
1506 errmsg = "use bigger instruction";
1507 /* end-sanitize-v850e */
1513 /* fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number ); */
1518 errmsg = "illegal operand";
1521 errmsg = "missing operand";
1524 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
1526 errmsg = "invalid operand";
1529 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1534 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1539 /* We need to generate a fixup for this expression. */
1540 if (fc >= MAX_INSN_FIXUPS)
1541 as_fatal ("too many fixups");
1543 fixups[ fc ].exp = ex;
1544 fixups[ fc ].opindex = * opindex_ptr;
1545 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
1551 str = input_line_pointer;
1552 input_line_pointer = hold;
1554 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
1563 next_opcode = opcode + 1;
1564 if (next_opcode->name != NULL && strcmp (next_opcode->name, opcode->name) == 0)
1566 opcode = next_opcode;
1571 ignore_rest_of_line ();
1572 input_line_pointer = saved_input_line_pointer;
1578 while (isspace (*str))
1582 as_bad ("junk at end of line: `%s'", str);
1584 input_line_pointer = str;
1586 /* Write out the instruction.
1588 Four byte insns have an opcode with the two high bits on. */
1589 if (relaxable && fc > 0)
1591 f = frag_var (rs_machine_dependent, 6, 4, 0,
1592 fixups[0].exp.X_add_symbol,
1593 fixups[0].exp.X_add_number,
1594 (char *)fixups[0].opindex);
1596 md_number_to_chars (f, insn, insn_size);
1597 md_number_to_chars (f + 2, 0, 4);
1602 if ((insn & 0x0600) == 0x0600)
1607 /* start-sanitize-v850e */
1608 /* Special case: 32 bit MOV */
1609 if ((insn & 0xffe0) == 0x0620)
1611 /* end-sanitize-v850e */
1613 f = frag_more (insn_size);
1615 md_number_to_chars (f, insn, insn_size);
1617 if (extra_data_after_insn)
1619 f = frag_more (extra_data_len);
1621 md_number_to_chars (f, extra_data, extra_data_len);
1623 extra_data_after_insn = false;
1627 /* Create any fixups. At this point we do not use a
1628 bfd_reloc_code_real_type, but instead just use the
1629 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1630 handle fixups for any operand type, although that is admittedly
1631 not a very exciting feature. We pick a BFD reloc type in
1633 for (i = 0; i < fc; i++)
1635 const struct v850_operand * operand;
1636 bfd_reloc_code_real_type reloc;
1638 operand = & v850_operands[ fixups[i].opindex ];
1640 reloc = fixups[i].reloc;
1642 if (reloc != BFD_RELOC_UNUSED)
1644 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1652 size = bfd_get_reloc_size (reloc_howto);
1654 if (size != 2 && size != 4) /* XXX this will abort on an R_V850_8 reloc - is this reloc actually used ? */
1657 address = (f - frag_now->fr_literal) + insn_size - size;
1659 if (reloc == BFD_RELOC_32)
1664 fixP = fix_new_exp (frag_now, address, size,
1666 reloc_howto->pc_relative,
1671 case BFD_RELOC_LO16:
1672 case BFD_RELOC_HI16:
1673 case BFD_RELOC_HI16_S:
1674 fixP->fx_no_overflow = 1;
1682 f - frag_now->fr_literal, 4,
1684 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1685 (bfd_reloc_code_real_type) (fixups[i].opindex + (int) BFD_RELOC_UNUSED)
1690 input_line_pointer = saved_input_line_pointer;
1694 /* If while processing a fixup, a reloc really needs to be created */
1695 /* then it is done here. */
1698 tc_gen_reloc (seg, fixp)
1704 reloc = (arelent *) xmalloc (sizeof (arelent));
1705 reloc->sym_ptr_ptr = & fixp->fx_addsy->bsym;
1706 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1707 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
1709 if (reloc->howto == (reloc_howto_type *) NULL)
1711 as_bad_where (fixp->fx_file, fixp->fx_line,
1712 "reloc %d not supported by object file format", (int)fixp->fx_r_type);
1719 reloc->addend = fixp->fx_addnumber;
1724 /* Assume everything will fit in two bytes, then expand as necessary. */
1726 md_estimate_size_before_relax (fragp, seg)
1735 md_pcrel_from (fixp)
1738 /* If the symbol is undefined, or in a section other than our own,
1739 then let the linker figure it out. */
1740 if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
1742 /* The symbol is undefined. Let the linker figure it out. */
1745 return fixp->fx_frag->fr_address + fixp->fx_where;
1749 md_apply_fix3 (fixp, valuep, seg)
1757 if (fixp->fx_addsy == (symbolS *) NULL)
1762 else if (fixp->fx_pcrel)
1766 value = fixp->fx_offset;
1767 if (fixp->fx_subsy != (symbolS *) NULL)
1769 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
1770 value -= S_GET_VALUE (fixp->fx_subsy);
1773 /* We don't actually support subtracting a symbol. */
1774 as_bad_where (fixp->fx_file, fixp->fx_line,
1775 "expression too complex");
1780 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
1783 const struct v850_operand * operand;
1786 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
1787 operand = & v850_operands[ opindex ];
1789 /* Fetch the instruction, insert the fully resolved operand
1790 value, and stuff the instruction back again.
1792 Note the instruction has been stored in little endian
1794 where = fixp->fx_frag->fr_literal + fixp->fx_where;
1796 insn = bfd_getl32 ((unsigned char *) where);
1797 insn = v850_insert_operand (insn, operand, (offsetT) value,
1798 fixp->fx_file, fixp->fx_line);
1799 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
1803 /* Nothing else to do here. */
1807 /* Determine a BFD reloc value based on the operand information.
1808 We are only prepared to turn a few of the operands into relocs. */
1810 if (operand->bits == 22)
1811 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
1812 else if (operand->bits == 9)
1813 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
1816 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
1818 as_bad_where(fixp->fx_file, fixp->fx_line,
1819 "unresolved expression that must be resolved");
1824 else if (fixp->fx_done)
1826 /* We still have to insert the value into memory! */
1827 where = fixp->fx_frag->fr_literal + fixp->fx_where;
1828 if (fixp->fx_size == 1)
1829 *where = value & 0xff;
1830 else if (fixp->fx_size == 2)
1831 bfd_putl16 (value & 0xffff, (unsigned char *) where);
1832 else if (fixp->fx_size == 4)
1833 bfd_putl32 (value, (unsigned char *) where);
1836 fixp->fx_addnumber = value;
1841 /* Insert an operand value into an instruction. */
1843 static unsigned long
1844 v850_insert_operand (insn, operand, val, file, line)
1846 const struct v850_operand * operand;
1851 if (operand->insert)
1853 const char * message = NULL;
1855 insn = (*operand->insert) (insn, val, & message);
1856 if (message != NULL)
1858 if (file == (char *) NULL)
1861 as_warn_where (file, line, message);
1866 if (operand->bits != 32)
1871 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1873 if (! warn_signed_overflows)
1874 max = (1 << operand->bits) - 1;
1876 max = (1 << (operand->bits - 1)) - 1;
1878 min = - (1 << (operand->bits - 1));
1882 max = (1 << operand->bits) - 1;
1884 if (! warn_unsigned_overflows)
1885 min = - (1 << (operand->bits - 1));
1892 if (test < (offsetT) min || test > (offsetT) max)
1894 const char * err = "operand out of range (%s not between %ld and %ld)";
1897 sprint_value (buf, test);
1898 if (file == (char *) NULL)
1899 as_warn (err, buf, min, max);
1901 as_warn_where (file, line, err, buf, min, max);
1905 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1911 /* Parse a cons expression. We have to handle hi(), lo(), etc
1914 parse_cons_expression_v850 (exp)
1917 /* See if there's a reloc prefix like hi() we have to handle. */
1918 hold_cons_reloc = v850_reloc_prefix (NULL);
1920 /* Do normal expression parsing. */
1924 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1925 found a reloc prefix, then we use that reloc, else we choose an
1926 appropriate one based on the size of the expression. */
1928 cons_fix_new_v850 (frag, where, size, exp)
1934 if (hold_cons_reloc == BFD_RELOC_UNUSED)
1937 hold_cons_reloc = BFD_RELOC_32;
1939 hold_cons_reloc = BFD_RELOC_16;
1941 hold_cons_reloc = BFD_RELOC_8;
1945 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
1947 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);