1 /* tc-pdp11.c - pdp11-specific -
2 Copyright 2001, 2002, 2004, 2005, 2007, 2009
3 Free Software Foundation, Inc.
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 3, 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, 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 #include "safe-ctype.h"
24 #include "opcode/pdp11.h"
26 extern int flonum_gen2vax (int, FLONUM_TYPE * f, LITTLENUM_TYPE *);
31 /* A representation for PDP-11 machine code. */
36 int additional; /* Is there an additional word? */
37 int word; /* Additional word, if any. */
40 bfd_reloc_code_real_type type;
46 /* Instruction set extensions.
48 If you change this from an array to something else, please update
49 the "PDP-11 instruction set extensions" comment in pdp11.h. */
50 int pdp11_extension[PDP11_EXT_NUM];
52 /* Assembly options. */
57 int asm_option[ASM_OPT_NUM];
59 /* These chars start a comment anywhere in a source file (except inside
61 const char comment_chars[] = "#/";
63 /* These chars only start a comment at the beginning of a line. */
64 const char line_comment_chars[] = "#/";
66 const char line_separator_chars[] = ";";
68 /* Chars that can be used to separate mant from exp in floating point nums. */
69 const char EXP_CHARS[] = "eE";
71 /* Chars that mean this number is a floating point constant. */
72 /* as in 0f123.456. */
73 /* or 0H1.234E-12 (see exp chars above). */
74 const char FLT_CHARS[] = "dDfF";
76 void pseudo_even (int);
77 void pseudo_bss (int);
79 const pseudo_typeS md_pseudo_table[] =
81 { "bss", pseudo_bss, 0 },
82 { "even", pseudo_even, 0 },
86 static struct hash_control *insn_hash = NULL;
89 set_option (char *arg)
93 if (strcmp (arg, "all-extensions") == 0
94 || strcmp (arg, "all") == 0)
96 memset (pdp11_extension, ~0, sizeof pdp11_extension);
97 pdp11_extension[PDP11_NONE] = 0;
100 else if (strcmp (arg, "no-extensions") == 0)
102 memset (pdp11_extension, 0, sizeof pdp11_extension);
103 pdp11_extension[PDP11_BASIC] = 1;
107 if (strncmp (arg, "no-", 3) == 0)
113 /* Commersial instructions. */
114 if (strcmp (arg, "cis") == 0)
115 pdp11_extension[PDP11_CIS] = yes;
116 /* Call supervisor mode. */
117 else if (strcmp (arg, "csm") == 0)
118 pdp11_extension[PDP11_CSM] = yes;
119 /* Extended instruction set. */
120 else if (strcmp (arg, "eis") == 0)
121 pdp11_extension[PDP11_EIS] = pdp11_extension[PDP11_LEIS] = yes;
122 /* KEV11 floating-point. */
123 else if (strcmp (arg, "fis") == 0
124 || strcmp (arg, "kev11") == 0
125 || strcmp (arg, "kev-11") == 0)
126 pdp11_extension[PDP11_FIS] = yes;
127 /* FP-11 floating-point. */
128 else if (strcmp (arg, "fpp") == 0
129 || strcmp (arg, "fpu") == 0
130 || strcmp (arg, "fp11") == 0
131 || strcmp (arg, "fp-11") == 0
132 || strcmp (arg, "fpj11") == 0
133 || strcmp (arg, "fp-j11") == 0
134 || strcmp (arg, "fpj-11") == 0)
135 pdp11_extension[PDP11_FPP] = yes;
136 /* Limited extended insns. */
137 else if (strcmp (arg, "limited-eis") == 0)
139 pdp11_extension[PDP11_LEIS] = yes;
140 if (!pdp11_extension[PDP11_LEIS])
141 pdp11_extension[PDP11_EIS] = 0;
143 /* Move from processor type. */
144 else if (strcmp (arg, "mfpt") == 0)
145 pdp11_extension[PDP11_MFPT] = yes;
146 /* Multiprocessor insns: */
147 else if (strncmp (arg, "mproc", 5) == 0
149 || strncmp (arg, "multiproc", 9) == 0)
150 pdp11_extension[PDP11_MPROC] = yes;
151 /* Move from/to proc status. */
152 else if (strcmp (arg, "mxps") == 0)
153 pdp11_extension[PDP11_MXPS] = yes;
154 /* Position-independent code. */
155 else if (strcmp (arg, "pic") == 0)
156 asm_option[ASM_OPT_PIC] = yes;
157 /* Set priority level. */
158 else if (strcmp (arg, "spl") == 0)
159 pdp11_extension[PDP11_SPL] = yes;
160 /* Microcode instructions: */
161 else if (strcmp (arg, "ucode") == 0
163 || strcmp (arg, "microcode") == 0)
164 pdp11_extension[PDP11_UCODE] = yes;
175 static int first = 1;
179 set_option ("all-extensions");
192 insn_hash = hash_new ();
193 if (insn_hash == NULL)
194 as_fatal ("Virtual memory exhausted");
196 for (i = 0; i < pdp11_num_opcodes; i++)
197 hash_insert (insn_hash, pdp11_opcodes[i].name, (void *) (pdp11_opcodes + i));
198 for (i = 0; i < pdp11_num_aliases; i++)
199 hash_insert (insn_hash, pdp11_aliases[i].name, (void *) (pdp11_aliases + i));
203 md_number_to_chars (char con[], valueT value, int nbytes)
205 /* On a PDP-11, 0x1234 is stored as "\x12\x34", and
206 0x12345678 is stored as "\x56\x78\x12\x34". It's
207 anyones guess what 0x123456 would be stored like. */
214 con[0] = value & 0xff;
217 con[0] = value & 0xff;
218 con[1] = (value >> 8) & 0xff;
221 con[0] = (value >> 16) & 0xff;
222 con[1] = (value >> 24) & 0xff;
223 con[2] = value & 0xff;
224 con[3] = (value >> 8) & 0xff;
231 /* Fix up some data or instructions after we find out the value of a symbol
232 that they reference. Knows about order of bytes in address. */
235 md_apply_fix (fixS *fixP,
237 segT seg ATTRIBUTE_UNUSED)
246 buf = fixP->fx_where + fixP->fx_frag->fr_literal;
247 size = fixP->fx_size;
248 code = md_chars_to_number ((unsigned char *) buf, size);
250 switch (fixP->fx_r_type)
253 case BFD_RELOC_16_PCREL:
257 case BFD_RELOC_PDP11_DISP_8_PCREL:
261 case BFD_RELOC_PDP11_DISP_6_PCREL:
267 BAD_CASE (fixP->fx_r_type);
270 if (fixP->fx_addsy != NULL)
271 val += symbol_get_bfdsym (fixP->fx_addsy)->section->vma;
272 /* *value += fixP->fx_addsy->bsym->section->vma; */
275 code |= (val >> shift) & mask;
276 number_to_chars_littleendian (buf, code, size);
278 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
283 md_chars_to_number (con, nbytes)
284 unsigned char con[]; /* Low order byte 1st. */
285 int nbytes; /* Number of bytes in the input. */
287 /* On a PDP-11, 0x1234 is stored as "\x12\x34", and
288 0x12345678 is stored as "\x56\x78\x12\x34". It's
289 anyones guess what 0x123456 would be stored like. */
297 return (con[1] << BITS_PER_CHAR) | con[0];
300 (((con[1] << BITS_PER_CHAR) | con[0]) << (2 * BITS_PER_CHAR))
301 |((con[3] << BITS_PER_CHAR) | con[2]);
309 skip_whitespace (char *str)
311 while (*str == ' ' || *str == '\t')
317 find_whitespace (char *str)
319 while (*str != ' ' && *str != '\t' && *str != 0)
325 parse_reg (char *str, struct pdp11_code *operand)
327 str = skip_whitespace (str);
328 if (TOLOWER (*str) == 'r')
333 case '0': case '1': case '2': case '3':
334 case '4': case '5': case '6': case '7':
335 operand->code = *str - '0';
339 operand->error = "Bad register name";
343 else if (strncmp (str, "sp", 2) == 0
344 || strncmp (str, "SP", 2) == 0)
349 else if (strncmp (str, "pc", 2) == 0
350 || strncmp (str, "PC", 2) == 0)
357 operand->error = "Bad register name";
365 parse_ac5 (char *str, struct pdp11_code *operand)
367 str = skip_whitespace (str);
368 if (strncmp (str, "fr", 2) == 0
369 || strncmp (str, "FR", 2) == 0
370 || strncmp (str, "ac", 2) == 0
371 || strncmp (str, "AC", 2) == 0)
376 case '0': case '1': case '2': case '3':
378 operand->code = *str - '0';
382 operand->error = "Bad register name";
388 operand->error = "Bad register name";
396 parse_ac (char *str, struct pdp11_code *operand)
398 str = parse_ac5 (str, operand);
399 if (!operand->error && operand->code > 3)
401 operand->error = "Bad register name";
409 parse_expression (char *str, struct pdp11_code *operand)
411 char *save_input_line_pointer;
414 save_input_line_pointer = input_line_pointer;
415 input_line_pointer = str;
416 seg = expression (&operand->reloc.exp);
419 input_line_pointer = save_input_line_pointer;
420 operand->error = "Error in expression";
424 str = input_line_pointer;
425 input_line_pointer = save_input_line_pointer;
427 operand->reloc.pc_rel = 0;
433 parse_op_no_deferred (char *str, struct pdp11_code *operand)
435 LITTLENUM_TYPE literal_float[2];
437 str = skip_whitespace (str);
441 case '(': /* (rn) and (rn)+ */
442 str = parse_reg (str + 1, operand);
445 str = skip_whitespace (str);
448 operand->error = "Missing ')'";
454 operand->code |= 020;
459 operand->code |= 010;
466 str = parse_expression (str + 1, operand);
469 operand->additional = TRUE;
470 operand->word = operand->reloc.exp.X_add_number;
471 switch (operand->reloc.exp.X_op)
478 operand->reloc.type = BFD_RELOC_16;
479 operand->reloc.pc_rel = 0;
482 if (operand->reloc.exp.X_add_number > 0)
484 operand->error = "Error in expression";
487 /* It's a floating literal... */
488 know (operand->reloc.exp.X_add_number < 0);
489 flonum_gen2vax ('f', &generic_floating_point_number, literal_float);
490 operand->word = literal_float[0];
491 if (literal_float[1] != 0)
492 as_warn (_("Low order bits truncated in immediate float operand"));
495 operand->error = "Error in expression";
501 /* label, d(rn), -(rn) */
506 if (strncmp (str, "-(", 2) == 0) /* -(rn) */
508 str = parse_reg (str + 2, operand);
511 str = skip_whitespace (str);
514 operand->error = "Missing ')'";
517 operand->code |= 040;
522 str = parse_expression (str, operand);
526 str = skip_whitespace (str);
530 if (operand->reloc.exp.X_op != O_symbol)
532 operand->error = "Label expected";
536 operand->additional = 1;
538 operand->reloc.type = BFD_RELOC_16_PCREL;
539 operand->reloc.pc_rel = 1;
545 str = parse_reg (str, operand);
549 str = skip_whitespace (str);
553 operand->error = "Missing ')'";
558 operand->additional = TRUE;
559 operand->code |= 060;
560 switch (operand->reloc.exp.X_op)
563 operand->reloc.type = BFD_RELOC_16;
564 operand->reloc.pc_rel = 0;
567 if ((operand->code & 7) == 7)
569 operand->reloc.pc_rel = 1;
570 operand->word = operand->reloc.exp.X_add_number;
573 operand->word = operand->reloc.exp.X_add_number;
577 BAD_CASE (operand->reloc.exp.X_op);
587 parse_op_noreg (char *str, struct pdp11_code *operand)
589 str = skip_whitespace (str);
590 operand->error = NULL;
592 if (*str == '@' || *str == '*')
594 str = parse_op_no_deferred (str + 1, operand);
597 operand->code |= 010;
600 str = parse_op_no_deferred (str, operand);
606 parse_op (char *str, struct pdp11_code *operand)
608 str = skip_whitespace (str);
610 str = parse_reg (str, operand);
614 operand->error = NULL;
615 parse_ac5 (str, operand);
618 operand->error = "Float AC not legal as integer operand";
622 return parse_op_noreg (str, operand);
626 parse_fop (char *str, struct pdp11_code *operand)
628 str = skip_whitespace (str);
630 str = parse_ac5 (str, operand);
634 operand->error = NULL;
635 parse_reg (str, operand);
638 operand->error = "General register not legal as float operand";
642 return parse_op_noreg (str, operand);
646 parse_separator (char *str, int *error)
648 str = skip_whitespace (str);
649 *error = (*str != ',');
656 md_assemble (char *instruction_string)
658 const struct pdp11_opcode *op;
659 struct pdp11_code insn, op1, op2;
667 str = skip_whitespace (instruction_string);
668 p = find_whitespace (str);
671 as_bad ("No instruction found");
677 op = (struct pdp11_opcode *)hash_find (insn_hash, str);
681 as_bad (_("Unknown instruction '%s'"), str);
685 if (!pdp11_extension[op->extension])
687 as_warn ("Unsupported instruction set extension: %s", op->name);
692 insn.code = op->opcode;
693 insn.reloc.type = BFD_RELOC_NONE;
695 op1.additional = FALSE;
696 op1.reloc.type = BFD_RELOC_NONE;
698 op2.additional = FALSE;
699 op2.reloc.type = BFD_RELOC_NONE;
706 case PDP11_OPCODE_NO_OPS:
707 str = skip_whitespace (str);
712 case PDP11_OPCODE_IMM3:
713 case PDP11_OPCODE_IMM6:
714 case PDP11_OPCODE_IMM8:
715 str = skip_whitespace (str);
716 if (*str == '#' || *str == '$')
718 str = parse_expression (str, &op1);
721 if (op1.reloc.exp.X_op != O_constant || op1.reloc.type != BFD_RELOC_NONE)
723 op1.error = "operand is not an absolute constant";
728 case PDP11_OPCODE_IMM3:
729 if (op1.reloc.exp.X_add_number & ~7)
731 op1.error = "3-bit immediate out of range";
735 case PDP11_OPCODE_IMM6:
736 if (op1.reloc.exp.X_add_number & ~0x3f)
738 op1.error = "6-bit immediate out of range";
742 case PDP11_OPCODE_IMM8:
743 if (op1.reloc.exp.X_add_number & ~0xff)
745 op1.error = "8-bit immediate out of range";
750 insn.code |= op1.reloc.exp.X_add_number;
753 case PDP11_OPCODE_DISPL:
756 new = parse_expression (str, &op1);
758 op1.reloc.pc_rel = 1;
759 op1.reloc.type = BFD_RELOC_PDP11_DISP_8_PCREL;
760 if (op1.reloc.exp.X_op != O_symbol)
762 op1.error = "Symbol expected";
765 if (op1.code & ~0xff)
767 err = "8-bit displacement out of range";
771 insn.code |= op1.code;
772 insn.reloc = op1.reloc;
776 case PDP11_OPCODE_REG:
777 str = parse_reg (str, &op1);
780 insn.code |= op1.code;
783 case PDP11_OPCODE_OP:
784 str = parse_op (str, &op1);
787 insn.code |= op1.code;
792 case PDP11_OPCODE_FOP:
793 str = parse_fop (str, &op1);
796 insn.code |= op1.code;
801 case PDP11_OPCODE_REG_OP:
802 str = parse_reg (str, &op2);
805 insn.code |= op2.code << 6;
806 str = parse_separator (str, &error);
809 op2.error = "Missing ','";
812 str = parse_op (str, &op1);
815 insn.code |= op1.code;
820 case PDP11_OPCODE_REG_OP_REV:
821 str = parse_op (str, &op1);
824 insn.code |= op1.code;
827 str = parse_separator (str, &error);
830 op2.error = "Missing ','";
833 str = parse_reg (str, &op2);
836 insn.code |= op2.code << 6;
839 case PDP11_OPCODE_AC_FOP:
840 str = parse_ac (str, &op2);
843 insn.code |= op2.code << 6;
844 str = parse_separator (str, &error);
847 op1.error = "Missing ','";
850 str = parse_fop (str, &op1);
853 insn.code |= op1.code;
858 case PDP11_OPCODE_FOP_AC:
859 str = parse_fop (str, &op1);
862 insn.code |= op1.code;
865 str = parse_separator (str, &error);
868 op1.error = "Missing ','";
871 str = parse_ac (str, &op2);
874 insn.code |= op2.code << 6;
877 case PDP11_OPCODE_AC_OP:
878 str = parse_ac (str, &op2);
881 insn.code |= op2.code << 6;
882 str = parse_separator (str, &error);
885 op1.error = "Missing ','";
888 str = parse_op (str, &op1);
891 insn.code |= op1.code;
896 case PDP11_OPCODE_OP_AC:
897 str = parse_op (str, &op1);
900 insn.code |= op1.code;
903 str = parse_separator (str, &error);
906 op1.error = "Missing ','";
909 str = parse_ac (str, &op2);
912 insn.code |= op2.code << 6;
915 case PDP11_OPCODE_OP_OP:
916 str = parse_op (str, &op1);
919 insn.code |= op1.code << 6;
922 str = parse_separator (str, &error);
925 op2.error = "Missing ','";
928 str = parse_op (str, &op2);
931 insn.code |= op2.code;
936 case PDP11_OPCODE_REG_DISPL:
939 str = parse_reg (str, &op2);
942 insn.code |= op2.code << 6;
943 str = parse_separator (str, &error);
946 op1.error = "Missing ','";
949 new = parse_expression (str, &op1);
951 op1.reloc.pc_rel = 1;
952 op1.reloc.type = BFD_RELOC_PDP11_DISP_6_PCREL;
953 if (op1.reloc.exp.X_op != O_symbol)
955 op1.error = "Symbol expected";
958 if (op1.code & ~0x3f)
960 err = "6-bit displacement out of range";
964 insn.code |= op1.code;
965 insn.reloc = op1.reloc;
979 str = skip_whitespace (str);
981 err = "Too many operands";
993 to = frag_more (size);
995 md_number_to_chars (to, insn.code, 2);
996 if (insn.reloc.type != BFD_RELOC_NONE)
997 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
998 &insn.reloc.exp, insn.reloc.pc_rel, insn.reloc.type);
1003 md_number_to_chars (to, op1.word, 2);
1004 if (op1.reloc.type != BFD_RELOC_NONE)
1005 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
1006 &op1.reloc.exp, op1.reloc.pc_rel, op1.reloc.type);
1012 md_number_to_chars (to, op2.word, 2);
1013 if (op2.reloc.type != BFD_RELOC_NONE)
1014 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
1015 &op2.reloc.exp, op2.reloc.pc_rel, op2.reloc.type);
1021 md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
1022 segT segment ATTRIBUTE_UNUSED)
1028 md_convert_frag (bfd *headers ATTRIBUTE_UNUSED,
1029 segT seg ATTRIBUTE_UNUSED,
1030 fragS *fragP ATTRIBUTE_UNUSED)
1034 int md_short_jump_size = 2;
1035 int md_long_jump_size = 4;
1038 md_create_short_jump (char *ptr ATTRIBUTE_UNUSED,
1039 addressT from_addr ATTRIBUTE_UNUSED,
1040 addressT to_addr ATTRIBUTE_UNUSED,
1041 fragS *frag ATTRIBUTE_UNUSED,
1042 symbolS *to_symbol ATTRIBUTE_UNUSED)
1047 md_create_long_jump (char *ptr ATTRIBUTE_UNUSED,
1048 addressT from_addr ATTRIBUTE_UNUSED,
1049 addressT to_addr ATTRIBUTE_UNUSED,
1050 fragS *frag ATTRIBUTE_UNUSED,
1051 symbolS *to_symbol ATTRIBUTE_UNUSED)
1056 set_cpu_model (char *arg)
1066 if (strchr ("abdx", model[-1]) == NULL)
1069 if (model[-1] == 'd')
1071 if (arg[0] == 'f' || arg[0] == 'j')
1074 else if (model[-1] == 'x')
1083 if (strncmp (arg, "11", 2) != 0)
1093 /* Allow up to two revision letters. */
1101 set_option ("no-extensions");
1103 /* KA11 (11/15/20). */
1104 if (strncmp (buf, "a", 1) == 0)
1105 return 1; /* No extensions. */
1107 /* KB11 (11/45/50/55/70). */
1108 else if (strncmp (buf, "b", 1) == 0)
1109 return set_option ("eis") && set_option ("spl");
1111 /* KD11-A (11/35/40). */
1112 else if (strncmp (buf, "da", 2) == 0)
1113 return set_option ("limited-eis");
1115 /* KD11-B (11/05/10). */
1116 else if (strncmp (buf, "db", 2) == 0
1117 /* KD11-D (11/04). */
1118 || strncmp (buf, "dd", 2) == 0)
1119 return 1; /* no extensions */
1121 /* KD11-E (11/34). */
1122 else if (strncmp (buf, "de", 2) == 0)
1123 return set_option ("eis") && set_option ("mxps");
1125 /* KD11-F (11/03). */
1126 else if (strncmp (buf, "df", 2) == 0
1127 /* KD11-H (11/03). */
1128 || strncmp (buf, "dh", 2) == 0
1129 /* KD11-Q (11/03). */
1130 || strncmp (buf, "dq", 2) == 0)
1131 return set_option ("limited-eis") && set_option ("mxps");
1133 /* KD11-K (11/60). */
1134 else if (strncmp (buf, "dk", 2) == 0)
1135 return set_option ("eis")
1136 && set_option ("mxps")
1137 && set_option ("ucode");
1139 /* KD11-Z (11/44). */
1140 else if (strncmp (buf, "dz", 2) == 0)
1141 return set_option ("csm")
1142 && set_option ("eis")
1143 && set_option ("mfpt")
1144 && set_option ("mxps")
1145 && set_option ("spl");
1147 /* F11 (11/23/24). */
1148 else if (strncmp (buf, "f", 1) == 0)
1149 return set_option ("eis")
1150 && set_option ("mfpt")
1151 && set_option ("mxps");
1153 /* J11 (11/53/73/83/84/93/94). */
1154 else if (strncmp (buf, "j", 1) == 0)
1155 return set_option ("csm")
1156 && set_option ("eis")
1157 && set_option ("mfpt")
1158 && set_option ("multiproc")
1159 && set_option ("mxps")
1160 && set_option ("spl");
1163 else if (strncmp (buf, "t", 1) == 0)
1164 return set_option ("limited-eis")
1165 && set_option ("mxps");
1172 set_machine_model (char *arg)
1174 if (strncmp (arg, "pdp-11/", 7) != 0
1175 && strncmp (arg, "pdp11/", 6) != 0
1176 && strncmp (arg, "11/", 3) != 0)
1179 if (strncmp (arg, "pdp", 3) == 0)
1183 if (strncmp (arg, "11/", 3) == 0)
1186 if (strcmp (arg, "03") == 0)
1187 return set_cpu_model ("kd11f");
1189 else if (strcmp (arg, "04") == 0)
1190 return set_cpu_model ("kd11d");
1192 else if (strcmp (arg, "05") == 0
1193 || strcmp (arg, "10") == 0)
1194 return set_cpu_model ("kd11b");
1196 else if (strcmp (arg, "15") == 0
1197 || strcmp (arg, "20") == 0)
1198 return set_cpu_model ("ka11");
1200 else if (strcmp (arg, "21") == 0)
1201 return set_cpu_model ("t11");
1203 else if (strcmp (arg, "23") == 0
1204 || strcmp (arg, "24") == 0)
1205 return set_cpu_model ("f11");
1207 else if (strcmp (arg, "34") == 0
1208 || strcmp (arg, "34a") == 0)
1209 return set_cpu_model ("kd11e");
1211 else if (strcmp (arg, "35") == 0
1212 || strcmp (arg, "40") == 0)
1213 return set_cpu_model ("kd11da");
1215 else if (strcmp (arg, "44") == 0)
1216 return set_cpu_model ("kd11dz");
1218 else if (strcmp (arg, "45") == 0
1219 || strcmp (arg, "50") == 0
1220 || strcmp (arg, "55") == 0
1221 || strcmp (arg, "70") == 0)
1222 return set_cpu_model ("kb11");
1224 else if (strcmp (arg, "60") == 0)
1225 return set_cpu_model ("kd11k");
1227 else if (strcmp (arg, "53") == 0
1228 || strcmp (arg, "73") == 0
1229 || strcmp (arg, "83") == 0
1230 || strcmp (arg, "84") == 0
1231 || strcmp (arg, "93") == 0
1232 || strcmp (arg, "94") == 0)
1233 return set_cpu_model ("j11")
1234 && set_option ("fpp");
1240 const char *md_shortopts = "m:";
1242 struct option md_longopts[] =
1244 #define OPTION_CPU 257
1245 { "cpu", required_argument, NULL, OPTION_CPU },
1246 #define OPTION_MACHINE 258
1247 { "machine", required_argument, NULL, OPTION_MACHINE },
1248 #define OPTION_PIC 259
1249 { "pic", no_argument, NULL, OPTION_PIC },
1250 { NULL, no_argument, NULL, 0 }
1253 size_t md_longopts_size = sizeof (md_longopts);
1255 /* Invocation line includes a switch not recognized by the base assembler.
1256 See if it's a processor-specific option. */
1259 md_parse_option (int c, char *arg)
1266 if (set_option (arg))
1268 if (set_cpu_model (arg))
1270 if (set_machine_model (arg))
1275 if (set_cpu_model (arg))
1279 case OPTION_MACHINE:
1280 if (set_machine_model (arg))
1285 if (set_option ("pic"))
1297 md_show_usage (FILE *stream)
1301 PDP-11 instruction set extentions:\n\
1303 -m(no-)cis allow (disallow) commersial instruction set\n\
1304 -m(no-)csm allow (disallow) CSM instruction\n\
1305 -m(no-)eis allow (disallow) full extended instruction set\n\
1306 -m(no-)fis allow (disallow) KEV11 floating-point instructions\n\
1307 -m(no-)fpp allow (disallow) FP-11 floating-point instructions\n\
1308 -m(no-)fpu allow (disallow) FP-11 floating-point instructions\n\
1309 -m(no-)limited-eis allow (disallow) limited extended instruction set\n\
1310 -m(no-)mfpt allow (disallow) processor type instruction\n\
1311 -m(no-)multiproc allow (disallow) multiprocessor instructions\n\
1312 -m(no-)mxps allow (disallow) processor status instructions\n\
1313 -m(no-)spl allow (disallow) SPL instruction\n\
1314 -m(no-)ucode allow (disallow) microcode instructions\n\
1315 -mall-extensions allow all instruction set extensions\n\
1316 (this is the default)\n\
1317 -mno-extentions disallow all instruction set extensions\n\
1318 -pic generate position-indepenent code\n\
1320 PDP-11 CPU model options:\n\
1322 -mka11* KA11 CPU. base line instruction set only\n\
1323 -mkb11* KB11 CPU. enable full EIS and SPL\n\
1324 -mkd11a* KD11-A CPU. enable limited EIS\n\
1325 -mkd11b* KD11-B CPU. base line instruction set only\n\
1326 -mkd11d* KD11-D CPU. base line instruction set only\n\
1327 -mkd11e* KD11-E CPU. enable full EIS, MTPS, and MFPS\n\
1328 -mkd11f* KD11-F CPU. enable limited EIS, MTPS, and MFPS\n\
1329 -mkd11h* KD11-H CPU. enable limited EIS, MTPS, and MFPS\n\
1330 -mkd11q* KD11-Q CPU. enable limited EIS, MTPS, and MFPS\n\
1331 -mkd11k* KD11-K CPU. enable full EIS, MTPS, MFPS, LDUB, MED,\n\
1333 -mkd11z* KD11-Z CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1335 -mf11* F11 CPU. enable full EIS, MFPS, MTPS, and MFPT\n\
1336 -mj11* J11 CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1337 CSM, TSTSET, and WRTLCK\n\
1338 -mt11* T11 CPU. enable limited EIS, MTPS, and MFPS\n\
1340 PDP-11 machine model options:\n\
1342 -m11/03 same as -mkd11f\n\
1343 -m11/04 same as -mkd11d\n\
1344 -m11/05 same as -mkd11b\n\
1345 -m11/10 same as -mkd11b\n\
1346 -m11/15 same as -mka11\n\
1347 -m11/20 same as -mka11\n\
1348 -m11/21 same as -mt11\n\
1349 -m11/23 same as -mf11\n\
1350 -m11/24 same as -mf11\n\
1351 -m11/34 same as -mkd11e\n\
1352 -m11/34a same as -mkd11e -mfpp\n\
1353 -m11/35 same as -mkd11a\n\
1354 -m11/40 same as -mkd11a\n\
1355 -m11/44 same as -mkd11z\n\
1356 -m11/45 same as -mkb11\n\
1357 -m11/50 same as -mkb11\n\
1358 -m11/53 same as -mj11\n\
1359 -m11/55 same as -mkb11\n\
1360 -m11/60 same as -mkd11k\n\
1361 -m11/70 same as -mkb11\n\
1362 -m11/73 same as -mj11\n\
1363 -m11/83 same as -mj11\n\
1364 -m11/84 same as -mj11\n\
1365 -m11/93 same as -mj11\n\
1366 -m11/94 same as -mj11\n\
1371 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
1377 md_section_align (segT segment ATTRIBUTE_UNUSED,
1380 return (size + 1) & ~1;
1384 md_pcrel_from (fixS *fixP)
1386 return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size;
1389 /* Translate internal representation of relocation info to BFD target
1393 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
1397 bfd_reloc_code_real_type code;
1399 reloc = xmalloc (sizeof (* reloc));
1401 reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
1402 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
1403 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1405 /* This is taken account for in md_apply_fix(). */
1406 reloc->addend = -symbol_get_bfdsym (fixp->fx_addsy)->section->vma;
1408 switch (fixp->fx_r_type)
1412 code = BFD_RELOC_16_PCREL;
1414 code = BFD_RELOC_16;
1417 case BFD_RELOC_16_PCREL:
1418 code = BFD_RELOC_16_PCREL;
1422 BAD_CASE (fixp->fx_r_type);
1426 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
1428 if (reloc->howto == NULL)
1430 as_bad_where (fixp->fx_file, fixp->fx_line,
1431 "Can not represent %s relocation in this object file format",
1432 bfd_get_reloc_code_name (code));
1440 pseudo_bss (int c ATTRIBUTE_UNUSED)
1444 temp = get_absolute_expression ();
1445 subseg_set (bss_section, temp);
1446 demand_empty_rest_of_line ();
1450 pseudo_even (int c ATTRIBUTE_UNUSED)
1452 int alignment = 1; /* 2^1 */
1453 frag_align (alignment, 0, 1);
1454 record_alignment (now_seg, alignment);
1458 md_atof (int type, char * litP, int * sizeP)
1460 return vax_md_atof (type, litP, sizeP);