1 /* tc-pdp11.c - pdp11-specific -
2 Copyright (C) 2001 Free Software Foundation, Inc.
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, Boston, MA 02111-1307, USA. */
21 Apparently unused functions:
23 md_estimate_size_before_relax
29 #include "opcode/pdp11.h"
31 static int set_option PARAMS ((char *arg));
32 static int set_cpu_model PARAMS ((char *arg));
33 static int set_machine_model PARAMS ((char *arg));
39 * A representation for PDP-11 machine code.
45 int additional; /* is there an additional word? */
46 int word; /* additional word, if any */
49 bfd_reloc_code_real_type type;
56 * Instruction set extensions.
58 * If you change this from an array to something else, please update
59 * the "PDP-11 instruction set extensions" comment in pdp11.h.
61 int pdp11_extension[PDP11_EXT_NUM];
70 int asm_option[ASM_OPT_NUM];
72 /* These chars start a comment anywhere in a source file (except inside
74 CONST char comment_chars[] = "#/";
76 /* These chars only start a comment at the beginning of a line. */
77 CONST char line_comment_chars[] = "#/";
79 CONST char line_separator_chars[] = ";";
81 /* Chars that can be used to separate mant from exp in floating point nums */
82 CONST char EXP_CHARS[] = "eE";
84 /* Chars that mean this number is a floating point constant */
86 /* or 0H1.234E-12 (see exp chars above) */
87 CONST char FLT_CHARS[] = "dDfFgGhH";
89 void pseudo_even (int);
90 void pseudo_bss (int);
92 CONST pseudo_typeS md_pseudo_table[] =
94 { "bss", pseudo_bss, 0 },
95 { "even", pseudo_even, 0 },
103 static int first = 1;
107 set_option ("all-extensions");
113 static struct hash_control *insn_hash = NULL;
122 insn_hash = hash_new ();
123 if (insn_hash == NULL)
124 as_fatal ("Virtual memory exhausted");
126 for (i = 0; i < pdp11_num_opcodes; i++)
127 hash_insert (insn_hash, pdp11_opcodes[i].name, (PTR)(pdp11_opcodes + i));
128 for (i = 0; i < pdp11_num_aliases; i++)
129 hash_insert (insn_hash, pdp11_aliases[i].name, (PTR)(pdp11_aliases + i));
133 md_number_to_chars (con, value, nbytes)
138 /* On a PDP-11, 0x1234 is stored as "\x12\x34", and
139 * 0x12345678 is stored as "\x56\x78\x12\x34". It's
140 * anyones guess what 0x123456 would be stored like.
148 con[0] = value & 0xff;
151 con[0] = value & 0xff;
152 con[1] = (value >> 8) & 0xff;
155 con[0] = (value >> 16) & 0xff;
156 con[1] = (value >> 24) & 0xff;
157 con[2] = value & 0xff;
158 con[3] = (value >> 8) & 0xff;
165 /* Fix up some data or instructions after we find out the value of a symbol
166 that they reference. */
168 int /* Knows about order of bytes in address. */
169 md_apply_fix (fixP, value)
179 buf = fixP->fx_where + fixP->fx_frag->fr_literal;
180 size = fixP->fx_size;
181 code = md_chars_to_number (buf, size);
183 switch (fixP->fx_r_type)
186 case BFD_RELOC_16_PCREL:
190 case BFD_RELOC_PDP11_DISP_8_PCREL:
194 case BFD_RELOC_PDP11_DISP_6_PCREL:
199 BAD_CASE (fixP->fx_r_type);
202 if (fixP->fx_addsy != NULL)
203 *value += symbol_get_bfdsym (fixP->fx_addsy)->section->vma;
204 /* *value += fixP->fx_addsy->bsym->section->vma; */
207 code |= (*value >> shift) & mask;
208 number_to_chars_littleendian (buf, code, size);
213 md_chars_to_number (con, nbytes)
214 unsigned char con[]; /* Low order byte 1st. */
215 int nbytes; /* Number of bytes in the input. */
217 /* On a PDP-11, 0x1234 is stored as "\x12\x34", and
218 * 0x12345678 is stored as "\x56\x78\x12\x34". It's
219 * anyones guess what 0x123456 would be stored like.
229 return (con[1] << BITS_PER_CHAR) | con[0];
232 (((con[1] << BITS_PER_CHAR) | con[0]) << (2 * BITS_PER_CHAR)) |
233 ((con[3] << BITS_PER_CHAR) | con[2]);
241 skip_whitespace (char *str)
243 while (*str == ' ' || *str == '\t')
249 find_whitespace (char *str)
251 while (*str != ' ' && *str != '\t' && *str != 0)
265 parse_reg (char *str, struct pdp11_code *operand)
267 str = skip_whitespace (str);
268 if (mklower (*str) == 'r')
273 case '0': case '1': case '2': case '3':
274 case '4': case '5': case '6': case '7':
275 operand->code = *str - '0';
279 operand->error = "Bad register name";
283 else if (strncmp (str, "sp", 2) == 0 ||
284 strncmp (str, "SP", 2) == 0)
289 else if (strncmp (str, "pc", 2) == 0 ||
290 strncmp (str, "PC", 2) == 0)
297 operand->error = "Bad register name";
305 parse_ac (char *str, struct pdp11_code *operand)
307 str = skip_whitespace (str);
308 if (strncmp (str, "fr", 2) == 0 ||
309 strncmp (str, "FR", 2) == 0 ||
310 strncmp (str, "ac", 2) == 0 ||
311 strncmp (str, "AC", 2) == 0)
316 case '0': case '1': case '2': case '3':
317 operand->code = *str - '0';
321 operand->error = "Bad register name";
327 operand->error = "Bad register name";
335 parse_expression (char *str, struct pdp11_code *operand)
337 char *save_input_line_pointer;
340 save_input_line_pointer = input_line_pointer;
341 input_line_pointer = str;
342 seg = expression (&operand->reloc.exp);
345 input_line_pointer = save_input_line_pointer;
346 operand->error = "Error in expression";
350 str = input_line_pointer;
351 input_line_pointer = save_input_line_pointer;
353 operand->reloc.pc_rel = 0;
355 if (operand->reloc.exp.X_op == O_constant)
361 /* FIXME: buffer overflow! */
365 sprintf (buf, "%ld", operand->reloc.exp.X_add_number);
366 operand->reloc.exp.X_add_number = strtol (buf, &end, 8);
374 parse_op_no_deferred (char *str, struct pdp11_code *operand)
376 str = skip_whitespace (str);
380 case '(': /* (rn) and (rn)+ */
381 str = parse_reg (str + 1, operand);
384 str = skip_whitespace (str);
387 operand->error = "Missing ')'";
393 operand->code |= 020;
398 operand->code |= 010;
402 case '#': /* immediate */
404 str = parse_expression (str + 1, operand);
407 operand->additional = TRUE;
408 operand->word = operand->reloc.exp.X_add_number;
409 switch (operand->reloc.exp.X_op)
416 operand->reloc.type = BFD_RELOC_16;
417 operand->reloc.pc_rel = 0;
420 operand->error = "Error in expression";
426 default: /* label, d(rn), -(rn) */
430 if (strncmp (str, "-(", 2) == 0) /* -(rn) */
432 str = parse_reg (str + 2, operand);
435 str = skip_whitespace (str);
438 operand->error = "Missing ')'";
441 operand->code |= 040;
446 str = parse_expression (str, operand);
450 str = skip_whitespace (str);
452 if (*str != '(') /* label */
454 if (operand->reloc.exp.X_op != O_symbol)
456 operand->error = "Label expected";
460 operand->additional = 1;
462 operand->reloc.type = BFD_RELOC_16_PCREL;
463 operand->reloc.pc_rel = 1;
468 str = parse_reg (str, operand);
472 str = skip_whitespace (str);
476 operand->error = "Missing ')'";
481 operand->additional = TRUE;
482 operand->code |= 060;
483 switch (operand->reloc.exp.X_op)
487 operand->reloc.pc_rel = 1;
490 if ((operand->code & 7) == 7)
492 operand->reloc.pc_rel = 1;
493 operand->word = operand->reloc.exp.X_add_number;
497 operand->word = operand->reloc.exp.X_add_number;
501 BAD_CASE (operand->reloc.exp.X_op);
511 parse_op (char *str, struct pdp11_code *operand)
513 str = skip_whitespace (str);
515 str = parse_reg (str, operand);
518 operand->error = NULL;
520 if (*str == '@' || *str == '*')
522 str = parse_op_no_deferred (str + 1, operand);
525 operand->code |= 010;
528 str = parse_op_no_deferred (str, operand);
534 parse_separator (char *str, int *error)
536 str = skip_whitespace (str);
537 *error = (*str != ',');
544 md_assemble (instruction_string)
545 char *instruction_string;
547 CONST struct pdp11_opcode *op;
548 struct pdp11_code insn, op1, op2;
556 str = skip_whitespace (instruction_string);
557 p = find_whitespace (str);
560 as_bad ("No instruction found");
566 op = (struct pdp11_opcode *)hash_find (insn_hash, str);
572 op1.additional = FALSE;
573 op1.reloc.type = BFD_RELOC_NONE;
576 str = parse_expression (str, &op1);
584 char *to = frag_more (2);
586 md_number_to_chars (to, op1.code, 2);
587 if (insn.reloc.type != BFD_RELOC_NONE)
588 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
589 &insn.reloc.exp, insn.reloc.pc_rel, insn.reloc.type);
592 as_warn ("Unknown instruction");
598 if (!pdp11_extension[op->extension])
600 as_warn ("Unsupported instruction set extension: %s", op->name);
605 insn.code = op->opcode;
606 insn.reloc.type = BFD_RELOC_NONE;
608 op1.additional = FALSE;
609 op1.reloc.type = BFD_RELOC_NONE;
611 op2.additional = FALSE;
612 op2.reloc.type = BFD_RELOC_NONE;
619 case PDP11_OPCODE_NO_OPS:
620 str = skip_whitespace (str);
625 case PDP11_OPCODE_IMM3:
626 case PDP11_OPCODE_IMM6:
627 case PDP11_OPCODE_IMM8:
628 str = skip_whitespace (str);
629 if (*str == '#' || *str == '$')
631 str = parse_expression (str, &op1);
636 case PDP11_OPCODE_IMM3:
639 op1.error = "3-bit immediate out of range";
643 case PDP11_OPCODE_IMM6:
644 if (op1.code & ~0x3f)
646 op1.error = "6-bit immediate out of range";
650 case PDP11_OPCODE_IMM8:
651 if (op1.code & ~0xff)
653 op1.error = "8-bit immediate out of range";
658 insn.code |= op1.code;
661 case PDP11_OPCODE_DISPL:
664 new = parse_expression (str, &op1);
666 op1.reloc.pc_rel = 1;
667 op1.reloc.type = BFD_RELOC_PDP11_DISP_8_PCREL;
668 if (op1.reloc.exp.X_op != O_symbol)
670 op1.error = "Symbol expected";
673 if (op1.code & ~0xff)
675 err = "8-bit displacement out of range";
679 insn.code |= op1.code;
680 insn.reloc = op1.reloc;
684 case PDP11_OPCODE_REG:
685 str = parse_reg (str, &op1);
688 insn.code |= op1.code;
691 case PDP11_OPCODE_OP:
692 str = parse_op (str, &op1);
695 insn.code |= op1.code;
700 case PDP11_OPCODE_REG_OP:
701 str = parse_reg (str, &op2);
704 insn.code |= op2.code << 6;
705 str = parse_separator (str, &error);
708 op2.error = "Missing ','";
711 str = parse_op (str, &op1);
714 insn.code |= op1.code;
719 case PDP11_OPCODE_REG_OP_REV:
720 str = parse_op (str, &op1);
723 insn.code |= op1.code;
726 str = parse_separator (str, &error);
729 op2.error = "Missing ','";
732 str = parse_reg (str, &op2);
735 insn.code |= op2.code << 6;
738 case PDP11_OPCODE_AC_OP:
739 str = parse_ac (str, &op2);
742 insn.code |= op2.code << 6;
743 str = parse_separator (str, &error);
746 op1.error = "Missing ','";
749 str = parse_op (str, &op1);
752 insn.code |= op1.code;
757 case PDP11_OPCODE_OP_OP:
758 str = parse_op (str, &op1);
761 insn.code |= op1.code << 6;
764 str = parse_separator (str, &error);
767 op2.error = "Missing ','";
770 str = parse_op (str, &op2);
773 insn.code |= op2.code;
778 case PDP11_OPCODE_REG_DISPL:
781 str = parse_reg (str, &op2);
784 insn.code |= op2.code << 6;
785 str = parse_separator (str, &error);
788 op1.error = "Missing ','";
791 new = parse_expression (str, &op1);
793 op1.reloc.pc_rel = 1;
794 op1.reloc.type = BFD_RELOC_PDP11_DISP_6_PCREL;
795 if (op1.reloc.exp.X_op != O_symbol)
797 op1.error = "Symbol expected";
800 if (op1.code & ~0x3f)
802 err = "6-bit displacement out of range";
806 insn.code |= op1.code;
807 insn.reloc = op1.reloc;
821 str = skip_whitespace (str);
823 err = "Too many operands";
835 to = frag_more (size);
837 md_number_to_chars (to, insn.code, 2);
838 if (insn.reloc.type != BFD_RELOC_NONE)
839 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
840 &insn.reloc.exp, insn.reloc.pc_rel, insn.reloc.type);
845 md_number_to_chars (to, op1.word, 2);
846 if (op1.reloc.type != BFD_RELOC_NONE)
847 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
848 &op1.reloc.exp, op1.reloc.pc_rel, op1.reloc.type);
854 md_number_to_chars (to, op2.word, 2);
855 if (op2.reloc.type != BFD_RELOC_NONE)
856 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
857 &op2.reloc.exp, op2.reloc.pc_rel, op2.reloc.type);
863 md_estimate_size_before_relax (fragP, segment)
864 fragS *fragP ATTRIBUTE_UNUSED;
865 segT segment ATTRIBUTE_UNUSED;
871 md_convert_frag (headers, seg, fragP)
872 bfd *headers ATTRIBUTE_UNUSED;
873 segT seg ATTRIBUTE_UNUSED;
874 fragS *fragP ATTRIBUTE_UNUSED;
878 CONST int md_short_jump_size = 2;
879 CONST int md_long_jump_size = 4;
882 md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
883 char *ptr ATTRIBUTE_UNUSED;
884 addressT from_addr ATTRIBUTE_UNUSED;
885 addressT to_addr ATTRIBUTE_UNUSED;
886 fragS *frag ATTRIBUTE_UNUSED;
887 symbolS *to_symbol ATTRIBUTE_UNUSED;
892 md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
893 char *ptr ATTRIBUTE_UNUSED;
894 addressT from_addr ATTRIBUTE_UNUSED;
895 addressT to_addr ATTRIBUTE_UNUSED;
896 fragS *frag ATTRIBUTE_UNUSED;
897 symbolS *to_symbol ATTRIBUTE_UNUSED;
907 if (strcmp (arg, "all-extensions") == 0 ||
908 strcmp (arg, "all") == 0)
910 memset (pdp11_extension, ~0, sizeof pdp11_extension);
911 pdp11_extension[PDP11_NONE] = 0;
914 else if (strcmp (arg, "no-extensions") == 0)
916 memset (pdp11_extension, 0, sizeof pdp11_extension);
917 pdp11_extension[PDP11_BASIC] = 1;
921 if (strncmp (arg, "no-", 3) == 0)
927 if (strcmp (arg, "cis") == 0) /* commersial instructions */
928 pdp11_extension[PDP11_CIS] = yes;
929 else if (strcmp (arg, "csm") == 0) /* call supervisor mode */
930 pdp11_extension[PDP11_CSM] = yes;
931 else if (strcmp (arg, "eis") == 0) /* extended instruction set */
932 pdp11_extension[PDP11_EIS] = pdp11_extension[PDP11_LEIS] = yes;
933 else if (strcmp (arg, "fis") == 0 || /* KEV11 floating-point */
934 strcmp (arg, "kev11") == 0 ||
935 strcmp (arg, "kev-11") == 0)
936 pdp11_extension[PDP11_FIS] = yes;
937 else if (strcmp (arg, "fpp") == 0 || /* FP-11 floating-point */
938 strcmp (arg, "fpu") == 0 ||
939 strcmp (arg, "fp11") == 0 ||
940 strcmp (arg, "fp-11") == 0 ||
941 strcmp (arg, "fpj11") == 0 ||
942 strcmp (arg, "fp-j11") == 0 ||
943 strcmp (arg, "fpj-11") == 0)
944 pdp11_extension[PDP11_FPP] = yes;
945 else if (strcmp (arg, "limited-eis") == 0) /* limited extended insns */
947 pdp11_extension[PDP11_LEIS] = yes;
948 if (!pdp11_extension[PDP11_LEIS])
949 pdp11_extension[PDP11_EIS] = 0;
951 else if (strcmp (arg, "mfpt") == 0) /* move from processor type */
952 pdp11_extension[PDP11_MFPT] = yes;
953 else if (strncmp (arg, "mproc", 5) == 0 || /* multiprocessor insns: */
954 strncmp (arg, "multiproc", 9) == 0 ) /* TSTSET, WRTLCK */
955 pdp11_extension[PDP11_MPROC] = yes;
956 else if (strcmp (arg, "mxps") == 0) /* move from/to proc status */
957 pdp11_extension[PDP11_MXPS] = yes;
958 else if (strcmp (arg, "pic") == 0) /* position-independent code */
959 asm_option[ASM_OPT_PIC] = yes;
960 else if (strcmp (arg, "spl") == 0) /* set priority level */
961 pdp11_extension[PDP11_SPL] = yes;
962 else if (strcmp (arg, "ucode") == 0 || /* microcode instructions: */
963 strcmp (arg, "microcode") == 0) /* LDUB, MED, XFC */
964 pdp11_extension[PDP11_UCODE] = yes;
983 if (strchr ("abdx", model[-1]) == NULL)
986 if (model[-1] == 'd')
992 else if (model[-1] == 'x')
1001 if (strncmp (arg, "11", 2) != 0)
1011 /* allow up to two revision letters */
1019 set_option ("no-extensions");
1021 if (strncmp (buf, "a", 1) == 0) /* KA11 (11/15/20) */
1022 return 1; /* no extensions */
1024 else if (strncmp (buf, "b", 1) == 0) /* KB11 (11/45/50/55/70) */
1025 return set_option ("eis") &&
1028 else if (strncmp (buf, "da", 2) == 0) /* KD11-A (11/35/40) */
1029 return set_option ("limited-eis");
1031 else if (strncmp (buf, "db", 2) == 0 || /* KD11-B (11/05/10) */
1032 strncmp (buf, "dd", 2) == 0) /* KD11-D (11/04) */
1033 return 1; /* no extensions */
1035 else if (strncmp (buf, "de", 2) == 0) /* KD11-E (11/34) */
1036 return set_option ("eis") &&
1037 set_option ("mxps");
1039 else if (strncmp (buf, "df", 2) == 0 || /* KD11-F (11/03) */
1040 strncmp (buf, "dh", 2) == 0 || /* KD11-H (11/03) */
1041 strncmp (buf, "dq", 2) == 0) /* KD11-Q (11/03) */
1042 return set_option ("limited-eis") &&
1043 set_option ("mxps");
1045 else if (strncmp (buf, "dk", 2) == 0) /* KD11-K (11/60) */
1046 return set_option ("eis") &&
1047 set_option ("mxps") &&
1048 set_option ("ucode");
1050 else if (strncmp (buf, "dz", 2) == 0) /* KD11-Z (11/44) */
1051 return set_option ("csm") &&
1052 set_option ("eis") &&
1053 set_option ("mfpt") &&
1054 set_option ("mxps") &&
1057 else if (strncmp (buf, "f", 1) == 0) /* F11 (11/23/24) */
1058 return set_option ("eis") &&
1059 set_option ("mfpt") &&
1060 set_option ("mxps");
1062 else if (strncmp (buf, "j", 1) == 0) /* J11 (11/53/73/83/84/93/94)*/
1063 return set_option ("csm") &&
1064 set_option ("eis") &&
1065 set_option ("mfpt") &&
1066 set_option ("multiproc") &&
1067 set_option ("mxps") &&
1070 else if (strncmp (buf, "t", 1) == 0) /* T11 (11/21) */
1071 return set_option ("limited-eis") &&
1072 set_option ("mxps");
1079 set_machine_model (arg)
1082 if (strncmp (arg, "pdp-11/", 7) != 0 &&
1083 strncmp (arg, "pdp11/", 6) != 0 &&
1084 strncmp (arg, "11/", 3) != 0)
1087 if (strncmp (arg, "pdp", 3) == 0)
1091 if (strncmp (arg, "11/", 3) == 0)
1094 if (strcmp (arg, "03") == 0) /* 11/03 */
1095 return set_cpu_model ("kd11f"); /* KD11-F */
1097 else if (strcmp (arg, "04") == 0) /* 11/04 */
1098 return set_cpu_model ("kd11d"); /* KD11-D */
1100 else if (strcmp (arg, "05") == 0 || /* 11/05 or 11/10 */
1101 strcmp (arg, "10") == 0)
1102 return set_cpu_model ("kd11b"); /* KD11-B */
1104 else if (strcmp (arg, "15") == 0 || /* 11/15 or 11/20 */
1105 strcmp (arg, "20") == 0)
1106 return set_cpu_model ("ka11"); /* KA11 */
1108 else if (strcmp (arg, "21") == 0) /* 11/21 */
1109 return set_cpu_model ("t11"); /* T11 */
1111 else if (strcmp (arg, "23") == 0 || /* 11/23 or 11/24 */
1112 strcmp (arg, "24") == 0)
1113 return set_cpu_model ("f11"); /* F11 */
1115 else if (strcmp (arg, "34") == 0 || /* 11/34 or 11/34a */
1116 strcmp (arg, "34a") == 0)
1117 return set_cpu_model ("kd11e"); /* KD11-E */
1119 else if (strcmp (arg, "35") == 0 || /* 11/35 or 11/40 */
1120 strcmp (arg, "40") == 0)
1121 return set_cpu_model ("kd11da"); /* KD11-A */
1123 else if (strcmp (arg, "44") == 0) /* 11/44 */
1124 return set_cpu_model ("kd11dz"); /* KD11-Z */
1126 else if (strcmp (arg, "45") == 0 || /* 11/45/50/55/70 */
1127 strcmp (arg, "50") == 0 ||
1128 strcmp (arg, "55") == 0 ||
1129 strcmp (arg, "70") == 0)
1130 return set_cpu_model ("kb11"); /* KB11 */
1132 else if (strcmp (arg, "60") == 0) /* 11/60 */
1133 return set_cpu_model ("kd11k"); /* KD11-K */ /* FPP? */
1135 else if (strcmp (arg, "53") == 0 || /* 11/53/73/83/84/93/94 */
1136 strcmp (arg, "73") == 0 ||
1137 strcmp (arg, "83") == 0 ||
1138 strcmp (arg, "84") == 0 ||
1139 strcmp (arg, "93") == 0 ||
1140 strcmp (arg, "94") == 0)
1141 return set_cpu_model ("j11") && /* J11 */
1142 set_option ("fpp"); /* All J11 machines come */
1143 /* with FPP installed. */
1148 CONST char *md_shortopts = "m:";
1150 struct option md_longopts[] =
1152 #define OPTION_CPU 257
1153 { "cpu", required_argument, NULL, OPTION_CPU },
1154 #define OPTION_MACHINE 258
1155 { "machine", required_argument, NULL, OPTION_MACHINE },
1156 #define OPTION_PIC 259
1157 { "pic", no_argument, NULL, OPTION_PIC },
1158 { NULL, no_argument, NULL, 0 }
1161 size_t md_longopts_size = sizeof(md_longopts);
1165 * Invocation line includes a switch not recognized by the base assembler.
1166 * See if it's a processor-specific option.
1170 md_parse_option (c, arg)
1179 if (set_option (arg))
1181 if (set_cpu_model (arg))
1183 if (set_machine_model (arg))
1188 if (set_cpu_model (arg))
1192 case OPTION_MACHINE:
1193 if (set_machine_model (arg))
1198 if (set_option ("pic"))
1206 as_bad ("unrecognized option `-%c%s'", c, arg ? arg : "");
1212 One possible way of parsing options.
1223 CONST char *pattern;
1225 CONST char *description;
1228 static struct options extension_opts[] =
1230 { "Ncsm", OPTION_CSM,
1231 "allow (disallow) CSM instruction" },
1232 { "Ncis", OPTION_CIS,
1233 "allow (disallow) commersial instruction set" },
1234 { "Neis", OPTION_EIS,
1235 "allow (disallow) extended instruction set" },
1237 { "all-extensions", OPTION_ALL_EXTENSIONS,
1238 "allow all instruction set extensions\n\
1239 (this is the default)" },
1240 { "no-extensions", OPTION_NO_EXTENSIONS,
1241 "disallow all instruction set extensions" },
1242 { "pic", OPTION_PIC,
1243 "position-independent code" },
1246 static struct options cpu_opts[] =
1248 { "Ka_11_*", OPTION_KA11, "KA11 CPU. ..." },
1249 { "Kb_11_*", OPTION_KB11, "KB11 CPU. ..." },
1250 { "Kd_11_a*", OPTION_KD11A, "KD11-A CPU. ..." },
1251 { "Kd_11_b*", OPTION_KD11B, "KD11-B CPU. ..." },
1252 { "Kd_11_d*", OPTION_KD11D, "KD11-D CPU. ..." },
1253 { "Kd_11_e*", OPTION_KD11E, "KD11-E CPU. ..." },
1254 { "Kd_11_f*", OPTION_KD11F, "KD11-F CPU. ..." },
1255 { "Kd_11_h*", OPTION_KD11H, "KD11-H CPU. ..." },
1256 { "Kd_11_q*", OPTION_KD11Q, "KD11-Q CPU. ..." },
1257 { "Kd_11_z*", OPTION_KD11Z, "KD11-Z CPU. ..." },
1258 { "Df_11_*", OPTION_F11, "F11 CPU. ..." },
1259 { "Dj_11_*", OPTION_J11, "J11 CPU. ..." },
1260 { "Dt_11_*", OPTION_T11, "T11 CPU. ..." },
1263 static struct options model_opts[] =
1265 { "P03", OPTION_PDP11_03, "same as ..." },
1266 { "P04", OPTION_PDP11_04, "same as ..." },
1267 { "P05", OPTION_PDP11_05, "same as ..." },
1268 { "P10", OPTION_PDP11_10, "same as ..." },
1269 { "P15", OPTION_PDP11_15, "same as ..." },
1270 { "P20", OPTION_PDP11_20, "same as ..." },
1271 { "P21", OPTION_PDP11_21, "same as ..." },
1272 { "P24", OPTION_PDP11_24, "same as ..." },
1273 { "P34", OPTION_PDP11_34, "same as ..." },
1274 { "P34a", OPTION_PDP11_34A, "same as ..." },
1275 { "P40", OPTION_PDP11_40, "same as ..." },
1276 { "P44", OPTION_PDP11_44, "same as ..." },
1277 { "P45", OPTION_PDP11_45, "same as ..." },
1278 { "P50", OPTION_PDP11_50, "same as ..." },
1279 { "P53", OPTION_PDP11_53, "same as ..." },
1280 { "P55", OPTION_PDP11_55, "same as ..." },
1281 { "P60", OPTION_PDP11_60, "same as ..." },
1282 { "P70", OPTION_PDP11_70, "same as ..." },
1283 { "P73", OPTION_PDP11_73, "same as ..." },
1284 { "P83", OPTION_PDP11_83, "same as ..." },
1285 { "P84", OPTION_PDP11_84, "same as ..." },
1286 { "P93", OPTION_PDP11_93, "same as ..." },
1287 { "P94", OPTION_PDP11_94, "same as ..." },
1293 struct options *opts;
1297 { "PDP-11 instruction set extentions",
1299 sizeof extension_opts / sizeof extension_opts[0] },
1300 { "PDP-11 CPU model options",
1302 sizeof cpu_opts / sizeof cpu_opts[0] },
1303 { "PDP-11 machine model options",
1305 sizeof model_opts / sizeof model_opts[0] },
1309 parse_match (char *arg, char *pattern)
1318 if (strncmp (arg, "no-") == 0)
1331 if (strncmp (arg, "kd", 2) == 0)
1336 if (strncmp (arg, "pdp-11/", 7) == 0)
1338 else if (strncmp (arg, "pdp11/", 6) == 0)
1340 else if (strncmp (arg, "11/", 3) == 0)
1356 if (*arg++ != pattern[-1])
1365 fprint_opt (stream, pattern)
1367 CONST char *pattern;
1376 n += fprintf (stream, "(no-)");
1380 n += fprintf (stream, "k");
1384 n += fprintf (stream "11/");
1393 fputc (pattern[-1], stream);
1402 parse_option (char *arg)
1406 for (i = 0; i < sizeof all_opts / sizeof all_opts[0]; i++)
1408 for (j = 0; j < all_opts[i].num; j++)
1410 if (parse_match (arg, all_opts[i].opts[j].pattern))
1412 set_option (all_opts[i].opts[j].opt);
1422 fprint_space (stream, n)
1427 fputc (' ', stream);
1431 md_show_usage (stream)
1436 for (i = 0; i < sizeof all_opts / sizeof all_opts[0]; i++)
1438 fprintf (stream "\n%s:\n\n", all_opts[i].title);
1440 for (j = 0; j < all_opts[i].num; j++)
1442 fprintf (stream, "-m");
1443 n = fprintf_opt (stream, all_opts[i].opts[j].pattern);
1444 fprint_space (stream, 22 - n);
1445 fprintf (stream, "%s\n", all_opts[i].opts[j].description);
1452 md_show_usage (stream)
1457 PDP-11 instruction set extentions:\n\
1459 -m(no-)cis allow (disallow) commersial instruction set\n\
1460 -m(no-)csm allow (disallow) CSM instruction\n\
1461 -m(no-)eis allow (disallow) full extended instruction set\n\
1462 -m(no-)fis allow (disallow) KEV11 floating-point instructions\n\
1463 -m(no-)fpp allow (disallow) FP-11 floating-point instructions\n\
1464 -m(no-)fpu allow (disallow) FP-11 floating-point instructions\n\
1465 -m(no-)limited-eis allow (disallow) limited extended instruction set\n\
1466 -m(no-)mfpt allow (disallow) processor type instruction\n\
1467 -m(no-)multiproc allow (disallow) multiprocessor instructions\n\
1468 -m(no-)mxps allow (disallow) processor status instructions\n\
1469 -m(no-)spl allow (disallow) SPL instruction\n\
1470 -m(no-)ucode allow (disallow) microcode instructions\n\
1471 -mall-extensions allow all instruction set extensions\n\
1472 (this is the default)\n\
1473 -mno-extentions disallow all instruction set extensions\n\
1474 -pic generate position-indepenent code\n\
1476 PDP-11 CPU model options:\n\
1478 -mka11* KA11 CPU. base line instruction set only\n\
1479 -mkb11* KB11 CPU. enable full EIS and SPL\n\
1480 -mkd11a* KD11-A CPU. enable limited EIS\n\
1481 -mkd11b* KD11-B CPU. base line instruction set only\n\
1482 -mkd11d* KD11-D CPU. base line instruction set only\n\
1483 -mkd11e* KD11-E CPU. enable full EIS, MTPS, and MFPS\n\
1484 -mkd11f* KD11-F CPU. enable limited EIS, MTPS, and MFPS\n\
1485 -mkd11h* KD11-H CPU. enable limited EIS, MTPS, and MFPS\n\
1486 -mkd11q* KD11-Q CPU. enable limited EIS, MTPS, and MFPS\n\
1487 -mkd11k* KD11-K CPU. enable full EIS, MTPS, MFPS, LDUB, MED,\n\
1489 -mkd11z* KD11-Z CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1491 -mf11* F11 CPU. enable full EIS, MFPS, MTPS, and MFPT\n\
1492 -mj11* J11 CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1493 CSM, TSTSET, and WRTLCK\n\
1494 -mt11* T11 CPU. enable limited EIS, MTPS, and MFPS\n\
1496 PDP-11 machine model options:\n\
1498 -m11/03 same as -mkd11f\n\
1499 -m11/04 same as -mkd11d\n\
1500 -m11/05 same as -mkd11b\n\
1501 -m11/10 same as -mkd11b\n\
1502 -m11/15 same as -mka11\n\
1503 -m11/20 same as -mka11\n\
1504 -m11/21 same as -mt11\n\
1505 -m11/23 same as -mf11\n\
1506 -m11/24 same as -mf11\n\
1507 -m11/34 same as -mkd11e\n\
1508 -m11/34a same as -mkd11e -mfpp\n\
1509 -m11/35 same as -mkd11a\n\
1510 -m11/40 same as -mkd11a\n\
1511 -m11/44 same as -mkd11z\n\
1512 -m11/45 same as -mkb11\n\
1513 -m11/50 same as -mkb11\n\
1514 -m11/53 same as -mj11\n\
1515 -m11/55 same as -mkb11\n\
1516 -m11/60 same as -mkd11k\n\
1517 -m11/70 same as -mkb11\n\
1518 -m11/73 same as -mj11\n\
1519 -m11/83 same as -mj11\n\
1520 -m11/84 same as -mj11\n\
1521 -m11/93 same as -mj11\n\
1522 -m11/94 same as -mj11\n\
1527 md_undefined_symbol (name)
1528 char *name ATTRIBUTE_UNUSED;
1534 md_section_align (segment, size)
1535 segT segment ATTRIBUTE_UNUSED;
1538 return (size + 1) & ~1;
1542 md_pcrel_from (fixP)
1545 return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size;
1548 /* Translate internal representation of relocation info to BFD target
1551 tc_gen_reloc (section, fixp)
1552 asection *section ATTRIBUTE_UNUSED;
1556 bfd_reloc_code_real_type code;
1558 reloc = (arelent *) xmalloc (sizeof (arelent));
1560 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
1561 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
1562 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1564 /* this is taken account for in md_apply_fix() */
1565 reloc->addend = -symbol_get_bfdsym (fixp->fx_addsy)->section->vma;
1567 switch (fixp->fx_r_type)
1571 code = BFD_RELOC_16_PCREL;
1573 code = BFD_RELOC_16;
1576 case BFD_RELOC_16_PCREL:
1577 code = BFD_RELOC_16_PCREL;
1581 BAD_CASE (fixp->fx_r_type);
1585 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
1587 if (reloc->howto == NULL)
1589 as_bad_where (fixp->fx_file, fixp->fx_line,
1590 "Can not represent %s relocation in this object file format",
1591 bfd_get_reloc_code_name (code));
1600 int c ATTRIBUTE_UNUSED;
1604 temp = get_absolute_expression ();
1605 subseg_set (bss_section, temp);
1606 demand_empty_rest_of_line ();
1611 int c ATTRIBUTE_UNUSED;
1613 int alignment = 1; /* 2^1 */
1614 frag_align (alignment, 0, 1);
1615 record_alignment (now_seg, alignment);
1618 /* end of tc-pdp11.c */