1 /* tc-d30v.c -- Assembler code for the Mitsubishi D30V
3 Copyright (C) 1997 Free Software Foundation.
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
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 #include "opcode/d30v.h"
28 const char comment_chars[] = ";";
29 const char line_comment_chars[] = "#";
30 const char line_separator_chars[] = "";
31 const char *md_shortopts = "O";
32 const char EXP_CHARS[] = "eE";
33 const char FLT_CHARS[] = "dD";
38 #define MAX_INSN_FIXUPS (5)
45 bfd_reloc_code_real_type reloc;
48 typedef struct _fixups
51 struct d30v_fixup fix[MAX_INSN_FIXUPS];
55 static Fixups FixUps[2];
56 static Fixups *fixups;
59 static int reg_name_search PARAMS ((char *name));
60 static int register_name PARAMS ((expressionS *expressionP));
61 static int check_range PARAMS ((unsigned long num, int bits, int flags));
62 static int postfix PARAMS ((char *p));
63 static bfd_reloc_code_real_type get_reloc PARAMS ((struct d30v_operand *op, int rel_flag));
64 static int get_operands PARAMS ((expressionS exp[], int cmp_hack));
65 static struct d30v_format *find_format PARAMS ((struct d30v_opcode *opcode, expressionS ops[],
67 static long long build_insn PARAMS ((struct d30v_insn *opcode, expressionS *opers));
68 static void write_long PARAMS ((struct d30v_insn *opcode, long long insn, Fixups *fx));
69 static void write_1_short PARAMS ((struct d30v_insn *opcode, long long insn, Fixups *fx));
70 static int write_2_short PARAMS ((struct d30v_insn *opcode1, long long insn1,
71 struct d30v_insn *opcode2, long long insn2, int exec_type, Fixups *fx));
72 static long long do_assemble PARAMS ((char *str, struct d30v_insn *opcode));
73 static unsigned long d30v_insert_operand PARAMS (( unsigned long insn, int op_type,
74 offsetT value, int left, fixS *fix));
75 static int parallel_ok PARAMS ((struct d30v_insn *opcode1, unsigned long insn1,
76 struct d30v_insn *opcode2, unsigned long insn2,
78 static void d30v_number_to_chars PARAMS ((char *buf, long long value, int nbytes));
80 struct option md_longopts[] = {
81 {NULL, no_argument, NULL, 0}
83 size_t md_longopts_size = sizeof(md_longopts);
86 /* The target specific pseudo-ops which we support. */
87 const pseudo_typeS md_pseudo_table[] =
92 /* Opcode hash table. */
93 static struct hash_control *d30v_hash;
95 /* reg_name_search does a binary search of the pre_defined_registers
96 array to see if "name" is a valid regiter name. Returns the register
97 number from the array on success, or -1 on failure. */
100 reg_name_search (name)
103 int middle, low, high;
107 high = reg_name_cnt() - 1;
111 middle = (low + high) / 2;
112 cmp = strcasecmp (name, pre_defined_registers[middle].name);
118 return pre_defined_registers[middle].value;
124 /* register_name() checks the string at input_line_pointer
125 to see if it is a valid register name */
128 register_name (expressionP)
129 expressionS *expressionP;
132 char c, *p = input_line_pointer;
134 while (*p && *p!='\n' && *p!='\r' && *p !=',' && *p!=' ' && *p!=')')
141 /* look to see if it's in the register table */
142 reg_number = reg_name_search (input_line_pointer);
145 expressionP->X_op = O_register;
146 /* temporarily store a pointer to the string here */
147 expressionP->X_op_symbol = (struct symbol *)input_line_pointer;
148 expressionP->X_add_number = reg_number;
149 input_line_pointer = p;
159 check_range (num, bits, flags)
167 /* don't bother checking 32-bit values */
171 if (flags & OPERAND_SIGNED)
173 max = (1 << (bits - 1))-1;
174 min = - (1 << (bits - 1));
175 if (((long)num > max) || ((long)num < min))
180 max = (1 << bits) - 1;
182 if ((num > max) || (num < min))
190 md_show_usage (stream)
193 fprintf(stream, "D30V options:\n\
194 -O optimize. Will do some operations in parallel.\n");
198 md_parse_option (c, arg)
205 /* Optimize. Will attempt to parallelize operations */
215 md_undefined_symbol (name)
221 /* Turn a string in input_line_pointer into a floating point constant of type
222 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
223 emitted is stored in *sizeP . An error message is returned, or NULL on OK.
226 md_atof (type, litP, sizeP)
232 LITTLENUM_TYPE words[4];
246 return "bad call to md_atof";
249 t = atof_ieee (input_line_pointer, type, words);
251 input_line_pointer = t;
255 for (i = 0; i < prec; i++)
257 md_number_to_chars (litP, (valueT) words[i], 2);
264 md_convert_frag (abfd, sec, fragP)
273 md_section_align (seg, addr)
277 int align = bfd_get_section_alignment (stdoutput, seg);
278 return ((addr + (1 << align) - 1) & (-1 << align));
285 struct d30v_opcode *opcode;
286 d30v_hash = hash_new();
288 /* Insert opcode names into a hash table. */
289 for (opcode = (struct d30v_opcode *)d30v_opcode_table; opcode->name; opcode++)
290 hash_insert (d30v_hash, opcode->name, (char *) opcode);
293 FixUps[0].next = &FixUps[1];
294 FixUps[1].next = &FixUps[0];
298 /* this function removes the postincrement or postdecrement
299 operator ( '+' or '-' ) from an expression */
301 static int postfix (p)
304 while (*p != '-' && *p != '+')
306 if (*p==0 || *p=='\n' || *p=='\r')
326 static bfd_reloc_code_real_type
327 get_reloc (op, rel_flag)
328 struct d30v_operand *op;
334 return BFD_RELOC_D30V_6;
336 if (!(op->flags & OPERAND_SHIFT))
337 as_warn("unexpected 12-bit reloc type");
338 if (rel_flag == RELOC_PCREL)
339 return BFD_RELOC_D30V_15_PCREL;
341 return BFD_RELOC_D30V_15;
343 if (!(op->flags & OPERAND_SHIFT))
344 as_warn("unexpected 18-bit reloc type");
345 if (rel_flag == RELOC_PCREL)
346 return BFD_RELOC_D30V_21_PCREL;
348 return BFD_RELOC_D30V_21;
350 if (rel_flag == RELOC_PCREL)
351 return BFD_RELOC_D30V_32_PCREL;
353 return BFD_RELOC_D30V_32;
359 /* get_operands parses a string of operands and returns
360 an array of expressions */
363 get_operands (exp, cmp_hack)
367 char *p = input_line_pointer;
373 exp[numops].X_op = O_absent;
374 exp[numops++].X_add_number = cmp_hack - 1;
379 while (*p == ' ' || *p == '\t' || *p == ',')
381 if (*p==0 || *p=='\n' || *p=='\r')
387 exp[numops].X_op = O_absent;
391 exp[numops].X_add_number = OPERAND_ATPAR;
397 exp[numops].X_add_number = OPERAND_ATMINUS;
401 exp[numops].X_add_number = OPERAND_ATSIGN;
410 /* just skip the trailing paren */
415 input_line_pointer = p;
417 /* check to see if it might be a register name */
418 if (!register_name (&exp[numops]))
420 /* parse as an expression */
421 expression (&exp[numops]);
424 if (exp[numops].X_op == O_illegal)
425 as_bad ("illegal operand");
426 else if (exp[numops].X_op == O_absent)
427 as_bad ("missing operand");
430 p = input_line_pointer;
434 case -1: /* postdecrement mode */
435 exp[numops].X_op = O_absent;
436 exp[numops++].X_add_number = OPERAND_MINUS;
438 case 1: /* postincrement mode */
439 exp[numops].X_op = O_absent;
440 exp[numops++].X_add_number = OPERAND_PLUS;
446 exp[numops].X_op = 0;
450 /* build_insn generates the instruction. It does everything */
451 /* but write the FM bits. */
454 build_insn (opcode, opers)
455 struct d30v_insn *opcode;
458 int i, length, bits, shift, flags, format;
459 unsigned int number, id=0;
461 struct d30v_opcode *op = opcode->op;
462 struct d30v_format *form = opcode->form;
464 /* printf("ecc=%x op1=%x op2=%x mod=%x\n",opcode->ecc,op->op1,op->op2,form->modifier); */
465 insn = opcode->ecc << 28 | op->op1 << 25 | op->op2 << 20 | form->modifier << 18;
466 /* printf("insn=%llx\n",insn); */
467 for (i=0; form->operands[i]; i++)
469 flags = d30v_operand_table[form->operands[i]].flags;
472 /* must be a register or number */
473 if (!(flags & OPERAND_REG) && !(flags & OPERAND_NUM) &&
474 !(flags & OPERAND_NAME) && !(flags & OPERAND_SPECIAL))
477 bits = d30v_operand_table[form->operands[i]].bits;
478 length = d30v_operand_table[form->operands[i]].length;
479 shift = 12 - d30v_operand_table[form->operands[i]].position;
480 number = opers[i].X_add_number;
481 if (flags & OPERAND_REG)
483 /* now check for mvfsys or mvtsys control registers */
484 if (flags & OPERAND_CONTROL && (number & 0x3f) > MAX_CONTROL_REG)
487 id = (number & 0x3f) - MAX_CONTROL_REG;
490 else if (number & OPERAND_FLAG)
492 id = 3; /* number is a flag register */
496 else if (flags & OPERAND_SPECIAL)
502 if (opers[i].X_op != O_register && opers[i].X_op != O_constant && !(flags & OPERAND_NAME))
504 /* now create a fixup */
506 if (fixups->fc >= MAX_INSN_FIXUPS)
507 as_fatal ("too many fixups");
509 fixups->fix[fixups->fc].reloc =
510 get_reloc((struct d30v_operand *)&d30v_operand_table[form->operands[i]], op->reloc_flag);
511 fixups->fix[fixups->fc].size = 4;
512 fixups->fix[fixups->fc].exp = opers[i];
513 fixups->fix[fixups->fc].operand = form->operands[i];
514 fixups->fix[fixups->fc].pcrel = op->reloc_flag;
518 /* truncate to the proper number of bits */
520 if ((opers[i].X_op == O_constant) && check_range (number, bits, flags))
521 as_bad("operand out of range: %d",number);
522 number &= 0x7FFFFFFF >> (31 - bits);
527 /* it's a LONG instruction */
528 insn |= (number >> 26); /* top 6 bits */
529 insn <<= 32; /* shift the first word over */
530 insn |= ((number & 0x03FC0000) << 2); /* next 8 bits */
531 insn |= number & 0x0003FFFF; /* bottom 18 bits */
534 insn |= number << shift;
540 /* write out a long form instruction */
542 write_long (opcode, insn, fx)
543 struct d30v_insn *opcode;
548 char *f = frag_more(8);
551 d30v_number_to_chars (f, insn, 8);
553 for (i=0; i < fx->fc; i++)
555 if (fx->fix[i].reloc)
557 where = f - frag_now->fr_literal;
558 fix_new_exp (frag_now,
570 /* write out a short form instruction by itself */
572 write_1_short (opcode, insn, fx)
573 struct d30v_insn *opcode;
577 char *f = frag_more(8);
580 /* the other container needs to be NOP */
581 /* according to 4.3.1: for FM=00, sub-instructions performed only
582 by IU cannot be encoded in L-container. */
583 if (opcode->op->unit == IU)
584 insn |= FM00 | ((long long)NOP << 32); /* right container */
586 insn = FM00 | (insn << 32) | (long long)NOP; /* left container */
588 d30v_number_to_chars (f, insn, 8);
590 for (i=0; i < fx->fc; i++)
592 if (fx->fix[i].reloc)
594 where = f - frag_now->fr_literal;
595 fix_new_exp (frag_now,
606 /* write out a short form instruction if possible */
607 /* return number of instructions not written out */
609 write_2_short (opcode1, insn1, opcode2, insn2, exec_type, fx)
610 struct d30v_insn *opcode1, *opcode2;
611 long long insn1, insn2;
619 if(exec_type != 1 && (opcode1->op->flags_used == FLAG_JSR))
621 /* subroutines must be called from 32-bit boundaries */
622 /* so the return address will be correct */
623 write_1_short (opcode1, insn1, fx->next);
629 case 0: /* order not specified */
630 if ( Optimizing && parallel_ok (opcode1, insn1, opcode2, insn2, exec_type))
633 if (opcode1->op->unit == IU)
634 insn = FM00 | (insn2 << 32) | insn1;
635 else if (opcode2->op->unit == MU)
636 insn = FM00 | (insn2 << 32) | insn1;
639 insn = FM00 | (insn1 << 32) | insn2;
643 else if (opcode1->op->unit == IU)
645 /* reverse sequential */
646 insn = FM10 | (insn2 << 32) | insn1;
651 insn = FM01 | (insn1 << 32) | insn2;
655 case 1: /* parallel */
656 if (opcode1->op->unit == IU)
658 if (opcode2->op->unit == IU)
659 as_fatal ("Two IU instructions may not be executed in parallel");
660 as_warn ("Swapping instruction order");
661 insn = FM00 | (insn2 << 32) | insn1;
663 else if (opcode2->op->unit == MU)
665 if (opcode1->op->unit == MU)
666 as_fatal ("Two MU instructions may not be executed in parallel");
667 as_warn ("Swapping instruction order");
668 insn = FM00 | (insn2 << 32) | insn1;
672 insn = FM00 | (insn1 << 32) | insn2;
676 case 2: /* sequential */
677 if (opcode1->op->unit == IU)
678 as_fatal ("IU instruction may not be in the left container");
679 insn = FM01 | (insn1 << 32) | insn2;
682 case 3: /* reverse sequential */
683 if (opcode2->op->unit == MU)
684 as_fatal ("MU instruction may not be in the right container");
685 insn = FM10 | (insn1 << 32) | insn2;
689 as_fatal("unknown execution type passed to write_2_short()");
692 /* printf("writing out %llx\n",insn); */
694 d30v_number_to_chars (f, insn, 8);
698 for (i=0; i < fx->fc; i++)
700 if (fx->fix[i].reloc)
702 where = (f - frag_now->fr_literal) + 4*j;
704 fix_new_exp (frag_now,
719 /* Check 2 instructions and determine if they can be safely */
720 /* executed in parallel. Returns 1 if they can be. */
722 parallel_ok (op1, insn1, op2, insn2, exec_type)
723 struct d30v_insn *op1, *op2;
724 unsigned long insn1, insn2;
727 int i, j, flags, mask, shift, regno, bits;
728 unsigned long ins, mod_reg[2][3], used_reg[2][3];
729 struct d30v_format *f;
730 struct d30v_opcode *op;
732 /* section 4.3: both instructions must not be IU or MU only */
733 if ((op1->op->unit == IU && op2->op->unit == IU)
734 || (op1->op->unit == MU && op2->op->unit == MU))
743 for (j = 0; j < 2; j++)
757 mod_reg[j][0] = mod_reg[j][1] = 0;
758 mod_reg[j][2] = op->flags_set;
759 used_reg[j][0] = used_reg[j][1] = 0;
760 used_reg[j][2] = op->flags_used;
761 for (i = 0; f->operands[i]; i++)
763 flags = d30v_operand_table[f->operands[i]].flags;
764 shift = 12 - d30v_operand_table[f->operands[i]].position;
765 bits = d30v_operand_table[f->operands[i]].bits;
769 mask = 0x7FFFFFFF >> (31 - bits);
770 if (flags & OPERAND_REG)
772 regno = (ins >> shift) & mask;
773 if (flags & OPERAND_DEST)
775 if (flags & OPERAND_ACC)
776 mod_reg[j][2] = 1 << (regno+16);
777 else if (flags & OPERAND_FLAG)
778 mod_reg[j][2] = 1 << regno;
779 else if (!(flags & OPERAND_CONTROL))
782 mod_reg[j][1] = 1 << (regno - 32);
784 mod_reg[j][0] = 1 << regno;
789 if (flags & OPERAND_ACC)
790 used_reg[j][2] = 1 << (regno+16);
791 else if (flags & OPERAND_FLAG)
792 used_reg[j][2] = 1 << regno;
793 else if (!(flags & OPERAND_CONTROL))
796 used_reg[j][1] = 1 << (regno - 32);
798 used_reg[j][0] = 1 << regno;
805 for(j = 0; j < 3; j++)
806 if ((mod_reg[0][j] & mod_reg[1][j])
807 || (mod_reg[0][j] & used_reg[1][j])
808 || (mod_reg[1][j] & used_reg[0][j]))
816 /* This is the main entry point for the machine-dependent assembler. str points to a
817 machine-dependent instruction. This function is supposed to emit the frags/bytes
818 it assembles to. For the D30V, it mostly handles the special VLIW parsing and packing
819 and leaves the difficult stuff to do_assemble().
822 static long long prev_insn = -1;
823 static struct d30v_insn prev_opcode;
824 static subsegT prev_subseg;
825 static segT prev_seg = 0;
831 struct d30v_insn opcode;
833 int extype=0; /* execution type; parallel, etc */
834 static int etype=0; /* saved extype. used for multiline instructions */
839 /* look for the special multiple instruction separators */
840 str2 = strstr (str, "||");
845 str2 = strstr (str, "->");
850 str2 = strstr (str, "<-");
855 /* str2 points to the separator, if one */
860 /* if two instructions are present and we already have one saved
861 then first write it out */
864 /* assemble first instruction and save it */
865 prev_insn = do_assemble (str, &prev_opcode);
867 as_fatal ("can't find opcode ");
868 fixups = fixups->next;
873 insn = do_assemble (str, &opcode);
881 as_fatal ("can't find opcode ");
890 /* if this is a long instruction, write it and any previous short instruction */
891 if (opcode.form->form >= LONG)
894 as_fatal("Unable to mix instructions as specified");
896 write_long (&opcode, insn, fixups);
901 if ( (prev_insn != -1) && prev_seg && ((prev_seg != now_seg) || (prev_subseg != now_subseg)))
904 if ( (prev_insn != -1) &&
905 (write_2_short (&prev_opcode, (long)prev_insn, &opcode, (long)insn, extype, fixups) == 0))
907 /* no instructions saved */
913 as_fatal("Unable to mix instructions as specified");
914 /* save off last instruction so it may be packed on next pass */
915 memcpy( &prev_opcode, &opcode, sizeof(prev_opcode));
918 prev_subseg = now_subseg;
919 fixups = fixups->next;
924 /* do_assemble assembles a single instruction and returns an opcode */
925 /* it returns -1 (an invalid opcode) on error */
928 do_assemble (str, opcode)
930 struct d30v_insn *opcode;
932 unsigned char *op_start, *save;
933 unsigned char *op_end;
935 int cmp_hack, nlen = 0;
936 expressionS myops[6];
939 /* Drop leading whitespace */
943 /* find the opcode end */
944 for (op_start = op_end = (unsigned char *) (str);
948 && !is_end_of_line[*op_end] && *op_end != ' ';
951 name[nlen] = tolower(op_start[nlen]);
960 /* if there is an execution condition code, handle it */
964 while ( (i < ECC_MAX) && strncasecmp(d30v_ecc_names[i],op_end+1,2))
970 strncpy(tmp,op_end+1,2);
972 as_fatal ("unknown condition code: %s",tmp);
975 /* printf("condition code=%d\n",i); */
980 opcode->ecc = ECC_AL;
983 /* CMP and CMPU change their name based on condition codes */
984 if (!strncmp(name,"cmp",3))
987 char **str = (char **)d30v_cc_names;
993 for(i=1; *str && strncmp(*str,&name[p],2); i++, *str++)
999 as_fatal ("unknown condition code: %s",&name[p]);
1008 /* printf("cmp_hack=%d\n",cmp_hack); */
1010 /* find the first opcode with the proper name */
1011 opcode->op = (struct d30v_opcode *)hash_find (d30v_hash, name);
1012 if (opcode->op == NULL)
1013 as_fatal ("unknown opcode: %s",name);
1015 save = input_line_pointer;
1016 input_line_pointer = op_end;
1017 while (!(opcode->form = find_format (opcode->op, myops, cmp_hack)))
1020 if (strcmp(opcode->op->name,name))
1023 input_line_pointer = save;
1025 insn = build_insn (opcode, myops);
1030 /* find_format() gets a pointer to an entry in the format table. */
1031 /* It must look at all formats for an opcode and use the operands */
1032 /* to choose the correct one. Returns NULL on error. */
1034 static struct d30v_format *
1035 find_format (opcode, myops, cmp_hack)
1036 struct d30v_opcode *opcode;
1037 expressionS myops[];
1040 int numops, match, index, i=0, j, k;
1041 struct d30v_format *fm;
1042 struct d30v_operand *op;
1044 /* get all the operands and save them as expressions */
1045 numops = get_operands (myops, cmp_hack);
1047 while (index = opcode->format[i++])
1049 fm = (struct d30v_format *)&d30v_format_table[index];
1051 while (fm->form == index)
1054 /* now check the operands for compatibility */
1055 for (j = 0; match && fm->operands[j]; j++)
1057 int flags = d30v_operand_table[fm->operands[j]].flags;
1058 int X_op = myops[j].X_op;
1059 int num = myops[j].X_add_number;
1061 if ( flags & OPERAND_SPECIAL )
1065 else if (flags & OPERAND_REG)
1067 if ((X_op != O_register) ||
1068 ((flags & OPERAND_ACC) && !(num & OPERAND_ACC)) ||
1069 ((flags & OPERAND_FLAG) && !(num & OPERAND_FLAG)) ||
1070 (flags & OPERAND_CONTROL && !(num & OPERAND_CONTROL | num & OPERAND_FLAG)))
1076 if (((flags & OPERAND_MINUS) && ((X_op != O_absent) || (num != OPERAND_MINUS))) ||
1077 ((flags & OPERAND_PLUS) && ((X_op != O_absent) || (num != OPERAND_PLUS))) ||
1078 ((flags & OPERAND_ATMINUS) && ((X_op != O_absent) || (num != OPERAND_ATMINUS))) ||
1079 ((flags & OPERAND_ATPAR) && ((X_op != O_absent) || (num != OPERAND_ATPAR))) ||
1080 ((flags & OPERAND_ATSIGN) && ((X_op != O_absent) || (num != OPERAND_ATSIGN))))
1084 else if (flags & OPERAND_NUM)
1086 /* a number can be a constant or symbol expression */
1087 if (fm->form >= LONG)
1089 /* If we're testing for a LONG format, either fits */
1090 if (X_op != O_constant && X_op != O_symbol)
1093 /* This is the tricky part. Will the constant or symbol */
1094 /* fit into the space in the current format? */
1095 else if (X_op == O_constant)
1097 if (check_range (num, d30v_operand_table[fm->operands[j]].bits, flags))
1100 else if (X_op == O_symbol && S_IS_DEFINED(myops[j].X_add_symbol) &&
1101 (S_GET_SEGMENT(myops[j].X_add_symbol) == now_seg))
1103 /* if the symbol is defined, see if the value will fit */
1104 /* into the form we're considering */
1107 /* calculate the current address by running through the previous frags */
1108 /* and adding our current offset */
1109 for (value = 0, f = frchain_now->frch_root; f; f = f->fr_next)
1110 value += f->fr_fix + f->fr_offset;
1111 if (opcode->reloc_flag == RELOC_PCREL)
1112 value = S_GET_VALUE(myops[j].X_add_symbol) - value -
1113 (obstack_next_free(&frchain_now->frch_obstack) - frag_now->fr_literal);
1115 value = S_GET_VALUE(myops[j].X_add_symbol);
1116 if (check_range (value, d30v_operand_table[fm->operands[j]].bits, flags))
1123 /* printf("through the loop: match=%d\n",match); */
1124 /* we're only done if the operands matched so far AND there
1125 are no more to check */
1126 if (match && myops[j].X_op==0)
1129 fm = (struct d30v_format *)&d30v_format_table[++k];
1131 /* printf("trying another format: i=%d\n",i); */
1136 /* if while processing a fixup, a reloc really needs to be created */
1137 /* then it is done here */
1140 tc_gen_reloc (seg, fixp)
1145 reloc = (arelent *) bfd_alloc_by_size_t (stdoutput, sizeof (arelent));
1146 reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym;
1147 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1148 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
1149 if (reloc->howto == (reloc_howto_type *) NULL)
1151 as_bad_where (fixp->fx_file, fixp->fx_line,
1152 "reloc %d not supported by object file format", (int)fixp->fx_r_type);
1155 reloc->addend = fixp->fx_addnumber;
1160 md_estimate_size_before_relax (fragp, seg)
1169 md_pcrel_from_section (fixp, sec)
1173 if (fixp->fx_addsy != (symbolS *)NULL && !S_IS_DEFINED (fixp->fx_addsy))
1175 return fixp->fx_frag->fr_address + fixp->fx_where;
1179 md_apply_fix3 (fixp, valuep, seg)
1185 unsigned long insn, insn2;
1190 if (fixp->fx_addsy == (symbolS *) NULL)
1195 else if (!S_IS_DEFINED(fixp->fx_addsy))
1197 else if (fixp->fx_pcrel)
1203 value = fixp->fx_offset;
1204 if (fixp->fx_subsy != (symbolS *) NULL)
1206 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
1207 value -= S_GET_VALUE (fixp->fx_subsy);
1210 /* We don't actually support subtracting a symbol. */
1211 as_bad_where (fixp->fx_file, fixp->fx_line,
1212 "expression too complex");
1217 /* Fetch the instruction, insert the fully resolved operand
1218 value, and stuff the instruction back again. */
1219 where = fixp->fx_frag->fr_literal + fixp->fx_where;
1220 insn = bfd_getb32 ((unsigned char *) where);
1222 switch (fixp->fx_r_type)
1224 case BFD_RELOC_D30V_6:
1225 insn |= value & 0x3F;
1226 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
1228 case BFD_RELOC_D30V_15:
1229 insn |= (value >> 3) & 0xFFF;
1230 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
1232 case BFD_RELOC_D30V_15_PCREL:
1233 if ((long)fixp->fx_where & 0x7)
1235 insn |= (value >> 3) & 0xFFF;
1236 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
1238 case BFD_RELOC_D30V_21:
1239 insn |= (value >> 3) & 0x3FFFF;
1240 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
1242 case BFD_RELOC_D30V_21_PCREL:
1243 if ((long)fixp->fx_where & 0x7)
1245 insn |= (value >> 3) & 0x3FFFF;
1246 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
1248 case BFD_RELOC_D30V_32:
1249 insn2 = bfd_getb32 ((unsigned char *) where + 4);
1250 insn |= (value >> 26) & 0x3F; /* top 6 bits */
1251 insn2 |= ((value & 0x03FC0000) << 2); /* next 8 bits */
1252 insn2 |= value & 0x0003FFFF; /* bottom 18 bits */
1253 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
1254 bfd_putb32 ((bfd_vma) insn2, (unsigned char *) where + 4);
1256 case BFD_RELOC_D30V_32_PCREL:
1257 if ((long)fixp->fx_where & 0x7)
1259 insn2 = bfd_getb32 ((unsigned char *) where + 4);
1260 insn |= (value >> 26) & 0x3F; /* top 6 bits */
1261 insn2 |= ((value & 0x03FC0000) << 2); /* next 8 bits */
1262 insn2 |= value & 0x0003FFFF; /* bottom 18 bits */
1263 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
1264 bfd_putb32 ((bfd_vma) insn2, (unsigned char *) where + 4);
1267 bfd_putb32 ((bfd_vma) value, (unsigned char *) where);
1270 as_fatal ("line %d: unknown relocation type: 0x%x",fixp->fx_line,fixp->fx_r_type);
1277 /* d30v_cleanup() is called after the assembler has finished parsing the input
1278 file or after a label is defined. Because the D30V assembler sometimes saves short
1279 instructions to see if it can package them with the next instruction, there may
1280 be a short instruction that still needs written. */
1287 if (prev_insn != -1)
1290 subseg = now_subseg;
1291 subseg_set (prev_seg, prev_subseg);
1292 write_1_short (&prev_opcode, (long)prev_insn, fixups->next);
1293 subseg_set (seg, subseg);
1301 d30v_number_to_chars (buf, value, n)
1302 char *buf; /* Return 'nbytes' of chars here. */
1303 long long value; /* The value of the bits. */
1304 int n; /* Number of bytes in the output. */
1308 buf[n] = value & 0xff;