1 /* tc-pdp11.c - pdp11-specific -
2 Copyright (C) 2001-2016 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 3, 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, 51 Franklin Street - Fifth Floor,
19 Boston, MA 02110-1301, USA. */
22 #include "safe-ctype.h"
23 #include "opcode/pdp11.h"
25 extern int flonum_gen2vax (int, FLONUM_TYPE * f, LITTLENUM_TYPE *);
30 /* A representation for PDP-11 machine code. */
35 int additional; /* Is there an additional word? */
36 int word; /* Additional word, if any. */
39 bfd_reloc_code_real_type type;
45 /* Instruction set extensions.
47 If you change this from an array to something else, please update
48 the "PDP-11 instruction set extensions" comment in pdp11.h. */
49 int pdp11_extension[PDP11_EXT_NUM];
51 /* Assembly options. */
56 int asm_option[ASM_OPT_NUM];
58 /* These chars start a comment anywhere in a source file (except inside
60 const char comment_chars[] = "#/";
62 /* These chars only start a comment at the beginning of a line. */
63 const char line_comment_chars[] = "#/";
65 const char line_separator_chars[] = ";";
67 /* Chars that can be used to separate mant from exp in floating point nums. */
68 const char EXP_CHARS[] = "eE";
70 /* Chars that mean this number is a floating point constant. */
71 /* as in 0f123.456. */
72 /* or 0H1.234E-12 (see exp chars above). */
73 const char FLT_CHARS[] = "dDfF";
75 void pseudo_even (int);
76 void pseudo_bss (int);
78 const pseudo_typeS md_pseudo_table[] =
80 { "bss", pseudo_bss, 0 },
81 { "even", pseudo_even, 0 },
85 static struct hash_control *insn_hash = NULL;
88 set_option (const char *arg)
92 if (strcmp (arg, "all-extensions") == 0
93 || strcmp (arg, "all") == 0)
95 memset (pdp11_extension, ~0, sizeof pdp11_extension);
96 pdp11_extension[PDP11_NONE] = 0;
99 else if (strcmp (arg, "no-extensions") == 0)
101 memset (pdp11_extension, 0, sizeof pdp11_extension);
102 pdp11_extension[PDP11_BASIC] = 1;
106 if (strncmp (arg, "no-", 3) == 0)
112 /* Commersial instructions. */
113 if (strcmp (arg, "cis") == 0)
114 pdp11_extension[PDP11_CIS] = yes;
115 /* Call supervisor mode. */
116 else if (strcmp (arg, "csm") == 0)
117 pdp11_extension[PDP11_CSM] = yes;
118 /* Extended instruction set. */
119 else if (strcmp (arg, "eis") == 0)
120 pdp11_extension[PDP11_EIS] = pdp11_extension[PDP11_LEIS] = yes;
121 /* KEV11 floating-point. */
122 else if (strcmp (arg, "fis") == 0
123 || strcmp (arg, "kev11") == 0
124 || strcmp (arg, "kev-11") == 0)
125 pdp11_extension[PDP11_FIS] = yes;
126 /* FP-11 floating-point. */
127 else if (strcmp (arg, "fpp") == 0
128 || strcmp (arg, "fpu") == 0
129 || strcmp (arg, "fp11") == 0
130 || strcmp (arg, "fp-11") == 0
131 || strcmp (arg, "fpj11") == 0
132 || strcmp (arg, "fp-j11") == 0
133 || strcmp (arg, "fpj-11") == 0)
134 pdp11_extension[PDP11_FPP] = yes;
135 /* Limited extended insns. */
136 else if (strcmp (arg, "limited-eis") == 0)
138 pdp11_extension[PDP11_LEIS] = yes;
139 if (!pdp11_extension[PDP11_LEIS])
140 pdp11_extension[PDP11_EIS] = 0;
142 /* Move from processor type. */
143 else if (strcmp (arg, "mfpt") == 0)
144 pdp11_extension[PDP11_MFPT] = yes;
145 /* Multiprocessor insns: */
146 else if (strncmp (arg, "mproc", 5) == 0
148 || strncmp (arg, "multiproc", 9) == 0)
149 pdp11_extension[PDP11_MPROC] = yes;
150 /* Move from/to proc status. */
151 else if (strcmp (arg, "mxps") == 0)
152 pdp11_extension[PDP11_MXPS] = yes;
153 /* Position-independent code. */
154 else if (strcmp (arg, "pic") == 0)
155 asm_option[ASM_OPT_PIC] = yes;
156 /* Set priority level. */
157 else if (strcmp (arg, "spl") == 0)
158 pdp11_extension[PDP11_SPL] = yes;
159 /* Microcode instructions: */
160 else if (strcmp (arg, "ucode") == 0
162 || strcmp (arg, "microcode") == 0)
163 pdp11_extension[PDP11_UCODE] = yes;
174 static int first = 1;
178 set_option ("all-extensions");
191 insn_hash = hash_new ();
192 if (insn_hash == NULL)
193 as_fatal (_("Virtual memory exhausted"));
195 for (i = 0; i < pdp11_num_opcodes; i++)
196 hash_insert (insn_hash, pdp11_opcodes[i].name, (void *) (pdp11_opcodes + i));
197 for (i = 0; i < pdp11_num_aliases; i++)
198 hash_insert (insn_hash, pdp11_aliases[i].name, (void *) (pdp11_aliases + i));
202 md_number_to_chars (char con[], valueT value, int nbytes)
204 /* On a PDP-11, 0x1234 is stored as "\x12\x34", and
205 0x12345678 is stored as "\x56\x78\x12\x34". It's
206 anyones guess what 0x123456 would be stored like. */
213 con[0] = value & 0xff;
216 con[0] = value & 0xff;
217 con[1] = (value >> 8) & 0xff;
220 con[0] = (value >> 16) & 0xff;
221 con[1] = (value >> 24) & 0xff;
222 con[2] = value & 0xff;
223 con[3] = (value >> 8) & 0xff;
230 /* Fix up some data or instructions after we find out the value of a symbol
231 that they reference. Knows about order of bytes in address. */
234 md_apply_fix (fixS *fixP,
236 segT seg ATTRIBUTE_UNUSED)
245 buf = fixP->fx_where + fixP->fx_frag->fr_literal;
246 size = fixP->fx_size;
247 code = md_chars_to_number ((unsigned char *) buf, size);
249 switch (fixP->fx_r_type)
252 case BFD_RELOC_16_PCREL:
256 case BFD_RELOC_PDP11_DISP_8_PCREL:
260 case BFD_RELOC_PDP11_DISP_6_PCREL:
266 BAD_CASE (fixP->fx_r_type);
269 if (fixP->fx_addsy != NULL)
270 val += symbol_get_bfdsym (fixP->fx_addsy)->section->vma;
271 /* *value += fixP->fx_addsy->bsym->section->vma; */
274 code |= (val >> shift) & mask;
275 number_to_chars_littleendian (buf, code, size);
277 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
282 md_chars_to_number (unsigned char *con, int nbytes)
284 /* On a PDP-11, 0x1234 is stored as "\x12\x34", and
285 0x12345678 is stored as "\x56\x78\x12\x34". It's
286 anyones guess what 0x123456 would be stored like. */
294 return (con[1] << BITS_PER_CHAR) | con[0];
297 (((con[1] << BITS_PER_CHAR) | con[0]) << (2 * BITS_PER_CHAR))
298 |((con[3] << BITS_PER_CHAR) | con[2]);
306 skip_whitespace (char *str)
308 while (*str == ' ' || *str == '\t')
314 find_whitespace (char *str)
316 while (*str != ' ' && *str != '\t' && *str != 0)
322 parse_reg (char *str, struct pdp11_code *operand)
324 str = skip_whitespace (str);
325 if (TOLOWER (*str) == 'r')
330 case '0': case '1': case '2': case '3':
331 case '4': case '5': case '6': case '7':
332 operand->code = *str - '0';
336 operand->error = _("Bad register name");
340 else if (strncmp (str, "sp", 2) == 0
341 || strncmp (str, "SP", 2) == 0)
346 else if (strncmp (str, "pc", 2) == 0
347 || strncmp (str, "PC", 2) == 0)
354 operand->error = _("Bad register name");
362 parse_ac5 (char *str, struct pdp11_code *operand)
364 str = skip_whitespace (str);
365 if (strncmp (str, "fr", 2) == 0
366 || strncmp (str, "FR", 2) == 0
367 || strncmp (str, "ac", 2) == 0
368 || strncmp (str, "AC", 2) == 0)
373 case '0': case '1': case '2': case '3':
375 operand->code = *str - '0';
379 operand->error = _("Bad register name");
385 operand->error = _("Bad register name");
393 parse_ac (char *str, struct pdp11_code *operand)
395 str = parse_ac5 (str, operand);
396 if (!operand->error && operand->code > 3)
398 operand->error = _("Bad register name");
406 parse_expression (char *str, struct pdp11_code *operand)
408 char *save_input_line_pointer;
411 save_input_line_pointer = input_line_pointer;
412 input_line_pointer = str;
413 seg = expression (&operand->reloc.exp);
416 input_line_pointer = save_input_line_pointer;
417 operand->error = _("Error in expression");
421 str = input_line_pointer;
422 input_line_pointer = save_input_line_pointer;
424 operand->reloc.pc_rel = 0;
430 parse_op_no_deferred (char *str, struct pdp11_code *operand)
432 LITTLENUM_TYPE literal_float[2];
434 str = skip_whitespace (str);
438 case '(': /* (rn) and (rn)+ */
439 str = parse_reg (str + 1, operand);
442 str = skip_whitespace (str);
445 operand->error = _("Missing ')'");
451 operand->code |= 020;
456 operand->code |= 010;
463 str = parse_expression (str + 1, operand);
466 operand->additional = TRUE;
467 operand->word = operand->reloc.exp.X_add_number;
468 switch (operand->reloc.exp.X_op)
475 operand->reloc.type = BFD_RELOC_16;
476 operand->reloc.pc_rel = 0;
479 if (operand->reloc.exp.X_add_number > 0)
481 operand->error = _("Error in expression");
484 /* It's a floating literal... */
485 know (operand->reloc.exp.X_add_number < 0);
486 flonum_gen2vax ('f', &generic_floating_point_number, literal_float);
487 operand->word = literal_float[0];
488 if (literal_float[1] != 0)
489 as_warn (_("Low order bits truncated in immediate float operand"));
492 operand->error = _("Error in expression");
498 /* label, d(rn), -(rn) */
501 if (strncmp (str, "-(", 2) == 0) /* -(rn) */
503 str = parse_reg (str + 2, operand);
506 str = skip_whitespace (str);
509 operand->error = _("Missing ')'");
512 operand->code |= 040;
517 str = parse_expression (str, operand);
521 str = skip_whitespace (str);
526 operand->additional = 1;
528 operand->reloc.type = BFD_RELOC_16_PCREL;
529 operand->reloc.pc_rel = 1;
535 str = parse_reg (str, operand);
539 str = skip_whitespace (str);
543 operand->error = _("Missing ')'");
548 operand->additional = TRUE;
549 operand->code |= 060;
550 switch (operand->reloc.exp.X_op)
553 operand->reloc.type = BFD_RELOC_16;
554 operand->reloc.pc_rel = 0;
557 if ((operand->code & 7) == 7)
559 operand->reloc.pc_rel = 1;
560 operand->word = operand->reloc.exp.X_add_number;
563 operand->word = operand->reloc.exp.X_add_number;
567 BAD_CASE (operand->reloc.exp.X_op);
577 parse_op_noreg (char *str, struct pdp11_code *operand)
579 str = skip_whitespace (str);
580 operand->error = NULL;
582 if (*str == '@' || *str == '*')
584 str = parse_op_no_deferred (str + 1, operand);
587 operand->code |= 010;
590 str = parse_op_no_deferred (str, operand);
596 parse_op (char *str, struct pdp11_code *operand)
598 str = skip_whitespace (str);
600 str = parse_reg (str, operand);
604 operand->error = NULL;
605 parse_ac5 (str, operand);
608 operand->error = _("Float AC not legal as integer operand");
612 return parse_op_noreg (str, operand);
616 parse_fop (char *str, struct pdp11_code *operand)
618 str = skip_whitespace (str);
620 str = parse_ac5 (str, operand);
624 operand->error = NULL;
625 parse_reg (str, operand);
628 operand->error = _("General register not legal as float operand");
632 return parse_op_noreg (str, operand);
636 parse_separator (char *str, int *error)
638 str = skip_whitespace (str);
639 *error = (*str != ',');
646 md_assemble (char *instruction_string)
648 const struct pdp11_opcode *op;
649 struct pdp11_code insn, op1, op2;
652 const char *err = NULL;
657 str = skip_whitespace (instruction_string);
658 p = find_whitespace (str);
661 as_bad (_("No instruction found"));
667 op = (struct pdp11_opcode *)hash_find (insn_hash, str);
671 as_bad (_("Unknown instruction '%s'"), str);
675 if (!pdp11_extension[op->extension])
677 as_warn (_("Unsupported instruction set extension: %s"), op->name);
682 insn.code = op->opcode;
683 insn.reloc.type = BFD_RELOC_NONE;
685 op1.additional = FALSE;
686 op1.reloc.type = BFD_RELOC_NONE;
688 op2.additional = FALSE;
689 op2.reloc.type = BFD_RELOC_NONE;
696 case PDP11_OPCODE_NO_OPS:
697 str = skip_whitespace (str);
700 case PDP11_OPCODE_IMM3:
701 case PDP11_OPCODE_IMM6:
702 case PDP11_OPCODE_IMM8:
703 str = skip_whitespace (str);
704 if (*str == '#' || *str == '$')
706 str = parse_expression (str, &op1);
709 if (op1.reloc.exp.X_op != O_constant || op1.reloc.type != BFD_RELOC_NONE)
711 op1.error = _("operand is not an absolute constant");
716 case PDP11_OPCODE_IMM3:
717 if (op1.reloc.exp.X_add_number & ~7)
719 op1.error = _("3-bit immediate out of range");
723 case PDP11_OPCODE_IMM6:
724 if (op1.reloc.exp.X_add_number & ~0x3f)
726 op1.error = _("6-bit immediate out of range");
730 case PDP11_OPCODE_IMM8:
731 if (op1.reloc.exp.X_add_number & ~0xff)
733 op1.error = _("8-bit immediate out of range");
738 insn.code |= op1.reloc.exp.X_add_number;
741 case PDP11_OPCODE_DISPL:
744 new_pointer = parse_expression (str, &op1);
746 op1.reloc.pc_rel = 1;
747 op1.reloc.type = BFD_RELOC_PDP11_DISP_8_PCREL;
748 if (op1.reloc.exp.X_op != O_symbol)
750 op1.error = _("Symbol expected");
753 if (op1.code & ~0xff)
755 err = _("8-bit displacement out of range");
759 insn.code |= op1.code;
760 insn.reloc = op1.reloc;
764 case PDP11_OPCODE_REG:
765 str = parse_reg (str, &op1);
768 insn.code |= op1.code;
771 case PDP11_OPCODE_OP:
772 str = parse_op (str, &op1);
775 insn.code |= op1.code;
780 case PDP11_OPCODE_FOP:
781 str = parse_fop (str, &op1);
784 insn.code |= op1.code;
789 case PDP11_OPCODE_REG_OP:
790 str = parse_reg (str, &op2);
793 insn.code |= op2.code << 6;
794 str = parse_separator (str, &error);
797 op2.error = _("Missing ','");
800 str = parse_op (str, &op1);
803 insn.code |= op1.code;
808 case PDP11_OPCODE_REG_OP_REV:
809 str = parse_op (str, &op1);
812 insn.code |= op1.code;
815 str = parse_separator (str, &error);
818 op2.error = _("Missing ','");
821 str = parse_reg (str, &op2);
824 insn.code |= op2.code << 6;
827 case PDP11_OPCODE_AC_FOP:
828 str = parse_ac (str, &op2);
831 insn.code |= op2.code << 6;
832 str = parse_separator (str, &error);
835 op1.error = _("Missing ','");
838 str = parse_fop (str, &op1);
841 insn.code |= op1.code;
846 case PDP11_OPCODE_FOP_AC:
847 str = parse_fop (str, &op1);
850 insn.code |= op1.code;
853 str = parse_separator (str, &error);
856 op1.error = _("Missing ','");
859 str = parse_ac (str, &op2);
862 insn.code |= op2.code << 6;
865 case PDP11_OPCODE_AC_OP:
866 str = parse_ac (str, &op2);
869 insn.code |= op2.code << 6;
870 str = parse_separator (str, &error);
873 op1.error = _("Missing ','");
876 str = parse_op (str, &op1);
879 insn.code |= op1.code;
884 case PDP11_OPCODE_OP_AC:
885 str = parse_op (str, &op1);
888 insn.code |= op1.code;
891 str = parse_separator (str, &error);
894 op1.error = _("Missing ','");
897 str = parse_ac (str, &op2);
900 insn.code |= op2.code << 6;
903 case PDP11_OPCODE_OP_OP:
904 str = parse_op (str, &op1);
907 insn.code |= op1.code << 6;
910 str = parse_separator (str, &error);
913 op2.error = _("Missing ','");
916 str = parse_op (str, &op2);
919 insn.code |= op2.code;
924 case PDP11_OPCODE_REG_DISPL:
927 str = parse_reg (str, &op2);
930 insn.code |= op2.code << 6;
931 str = parse_separator (str, &error);
934 op1.error = _("Missing ','");
937 new_pointer = parse_expression (str, &op1);
939 op1.reloc.pc_rel = 1;
940 op1.reloc.type = BFD_RELOC_PDP11_DISP_6_PCREL;
941 if (op1.reloc.exp.X_op != O_symbol)
943 op1.error = _("Symbol expected");
946 if (op1.code & ~0x3f)
948 err = _("6-bit displacement out of range");
952 insn.code |= op1.code;
953 insn.reloc = op1.reloc;
967 str = skip_whitespace (str);
969 err = _("Too many operands");
981 to = frag_more (size);
983 md_number_to_chars (to, insn.code, 2);
984 if (insn.reloc.type != BFD_RELOC_NONE)
985 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
986 &insn.reloc.exp, insn.reloc.pc_rel, insn.reloc.type);
991 md_number_to_chars (to, op1.word, 2);
992 if (op1.reloc.type != BFD_RELOC_NONE)
993 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
994 &op1.reloc.exp, op1.reloc.pc_rel, op1.reloc.type);
1000 md_number_to_chars (to, op2.word, 2);
1001 if (op2.reloc.type != BFD_RELOC_NONE)
1002 fix_new_exp (frag_now, to - frag_now->fr_literal, 2,
1003 &op2.reloc.exp, op2.reloc.pc_rel, op2.reloc.type);
1009 md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
1010 segT segment ATTRIBUTE_UNUSED)
1016 md_convert_frag (bfd *headers ATTRIBUTE_UNUSED,
1017 segT seg ATTRIBUTE_UNUSED,
1018 fragS *fragP ATTRIBUTE_UNUSED)
1022 int md_short_jump_size = 2;
1023 int md_long_jump_size = 4;
1026 md_create_short_jump (char *ptr ATTRIBUTE_UNUSED,
1027 addressT from_addr ATTRIBUTE_UNUSED,
1028 addressT to_addr ATTRIBUTE_UNUSED,
1029 fragS *frag ATTRIBUTE_UNUSED,
1030 symbolS *to_symbol ATTRIBUTE_UNUSED)
1035 md_create_long_jump (char *ptr ATTRIBUTE_UNUSED,
1036 addressT from_addr ATTRIBUTE_UNUSED,
1037 addressT to_addr ATTRIBUTE_UNUSED,
1038 fragS *frag ATTRIBUTE_UNUSED,
1039 symbolS *to_symbol ATTRIBUTE_UNUSED)
1044 set_cpu_model (const char *arg)
1054 if (strchr ("abdx", model[-1]) == NULL)
1057 if (model[-1] == 'd')
1059 if (arg[0] == 'f' || arg[0] == 'j')
1062 else if (model[-1] == 'x')
1071 if (strncmp (arg, "11", 2) != 0)
1081 /* Allow up to two revision letters. */
1089 set_option ("no-extensions");
1091 /* KA11 (11/15/20). */
1092 if (strncmp (buf, "a", 1) == 0)
1093 return 1; /* No extensions. */
1095 /* KB11 (11/45/50/55/70). */
1096 else if (strncmp (buf, "b", 1) == 0)
1097 return set_option ("eis") && set_option ("spl");
1099 /* KD11-A (11/35/40). */
1100 else if (strncmp (buf, "da", 2) == 0)
1101 return set_option ("limited-eis");
1103 /* KD11-B (11/05/10). */
1104 else if (strncmp (buf, "db", 2) == 0
1105 /* KD11-D (11/04). */
1106 || strncmp (buf, "dd", 2) == 0)
1107 return 1; /* no extensions */
1109 /* KD11-E (11/34). */
1110 else if (strncmp (buf, "de", 2) == 0)
1111 return set_option ("eis") && set_option ("mxps");
1113 /* KD11-F (11/03). */
1114 else if (strncmp (buf, "df", 2) == 0
1115 /* KD11-H (11/03). */
1116 || strncmp (buf, "dh", 2) == 0
1117 /* KD11-Q (11/03). */
1118 || strncmp (buf, "dq", 2) == 0)
1119 return set_option ("limited-eis") && set_option ("mxps");
1121 /* KD11-K (11/60). */
1122 else if (strncmp (buf, "dk", 2) == 0)
1123 return set_option ("eis")
1124 && set_option ("mxps")
1125 && set_option ("ucode");
1127 /* KD11-Z (11/44). */
1128 else if (strncmp (buf, "dz", 2) == 0)
1129 return set_option ("csm")
1130 && set_option ("eis")
1131 && set_option ("mfpt")
1132 && set_option ("mxps")
1133 && set_option ("spl");
1135 /* F11 (11/23/24). */
1136 else if (strncmp (buf, "f", 1) == 0)
1137 return set_option ("eis")
1138 && set_option ("mfpt")
1139 && set_option ("mxps");
1141 /* J11 (11/53/73/83/84/93/94). */
1142 else if (strncmp (buf, "j", 1) == 0)
1143 return set_option ("csm")
1144 && set_option ("eis")
1145 && set_option ("mfpt")
1146 && set_option ("multiproc")
1147 && set_option ("mxps")
1148 && set_option ("spl");
1151 else if (strncmp (buf, "t", 1) == 0)
1152 return set_option ("limited-eis")
1153 && set_option ("mxps");
1160 set_machine_model (const char *arg)
1162 if (strncmp (arg, "pdp-11/", 7) != 0
1163 && strncmp (arg, "pdp11/", 6) != 0
1164 && strncmp (arg, "11/", 3) != 0)
1167 if (strncmp (arg, "pdp", 3) == 0)
1171 if (strncmp (arg, "11/", 3) == 0)
1174 if (strcmp (arg, "03") == 0)
1175 return set_cpu_model ("kd11f");
1177 else if (strcmp (arg, "04") == 0)
1178 return set_cpu_model ("kd11d");
1180 else if (strcmp (arg, "05") == 0
1181 || strcmp (arg, "10") == 0)
1182 return set_cpu_model ("kd11b");
1184 else if (strcmp (arg, "15") == 0
1185 || strcmp (arg, "20") == 0)
1186 return set_cpu_model ("ka11");
1188 else if (strcmp (arg, "21") == 0)
1189 return set_cpu_model ("t11");
1191 else if (strcmp (arg, "23") == 0
1192 || strcmp (arg, "24") == 0)
1193 return set_cpu_model ("f11");
1195 else if (strcmp (arg, "34") == 0
1196 || strcmp (arg, "34a") == 0)
1197 return set_cpu_model ("kd11e");
1199 else if (strcmp (arg, "35") == 0
1200 || strcmp (arg, "40") == 0)
1201 return set_cpu_model ("kd11da");
1203 else if (strcmp (arg, "44") == 0)
1204 return set_cpu_model ("kd11dz");
1206 else if (strcmp (arg, "45") == 0
1207 || strcmp (arg, "50") == 0
1208 || strcmp (arg, "55") == 0
1209 || strcmp (arg, "70") == 0)
1210 return set_cpu_model ("kb11");
1212 else if (strcmp (arg, "60") == 0)
1213 return set_cpu_model ("kd11k");
1215 else if (strcmp (arg, "53") == 0
1216 || strcmp (arg, "73") == 0
1217 || strcmp (arg, "83") == 0
1218 || strcmp (arg, "84") == 0
1219 || strcmp (arg, "93") == 0
1220 || strcmp (arg, "94") == 0)
1221 return set_cpu_model ("j11")
1222 && set_option ("fpp");
1228 const char *md_shortopts = "m:";
1230 struct option md_longopts[] =
1232 #define OPTION_CPU 257
1233 { "cpu", required_argument, NULL, OPTION_CPU },
1234 #define OPTION_MACHINE 258
1235 { "machine", required_argument, NULL, OPTION_MACHINE },
1236 #define OPTION_PIC 259
1237 { "pic", no_argument, NULL, OPTION_PIC },
1238 { NULL, no_argument, NULL, 0 }
1241 size_t md_longopts_size = sizeof (md_longopts);
1243 /* Invocation line includes a switch not recognized by the base assembler.
1244 See if it's a processor-specific option. */
1247 md_parse_option (int c, const char *arg)
1254 if (set_option (arg))
1256 if (set_cpu_model (arg))
1258 if (set_machine_model (arg))
1263 if (set_cpu_model (arg))
1267 case OPTION_MACHINE:
1268 if (set_machine_model (arg))
1273 if (set_option ("pic"))
1285 md_show_usage (FILE *stream)
1289 PDP-11 instruction set extensions:\n\
1291 -m(no-)cis allow (disallow) commersial instruction set\n\
1292 -m(no-)csm allow (disallow) CSM instruction\n\
1293 -m(no-)eis allow (disallow) full extended instruction set\n\
1294 -m(no-)fis allow (disallow) KEV11 floating-point instructions\n\
1295 -m(no-)fpp allow (disallow) FP-11 floating-point instructions\n\
1296 -m(no-)fpu allow (disallow) FP-11 floating-point instructions\n\
1297 -m(no-)limited-eis allow (disallow) limited extended instruction set\n\
1298 -m(no-)mfpt allow (disallow) processor type instruction\n\
1299 -m(no-)multiproc allow (disallow) multiprocessor instructions\n\
1300 -m(no-)mxps allow (disallow) processor status instructions\n\
1301 -m(no-)spl allow (disallow) SPL instruction\n\
1302 -m(no-)ucode allow (disallow) microcode instructions\n\
1303 -mall-extensions allow all instruction set extensions\n\
1304 (this is the default)\n\
1305 -mno-extentions disallow all instruction set extensions\n\
1306 -pic generate position-indepenent code\n\
1308 PDP-11 CPU model options:\n\
1310 -mka11* KA11 CPU. base line instruction set only\n\
1311 -mkb11* KB11 CPU. enable full EIS and SPL\n\
1312 -mkd11a* KD11-A CPU. enable limited EIS\n\
1313 -mkd11b* KD11-B CPU. base line instruction set only\n\
1314 -mkd11d* KD11-D CPU. base line instruction set only\n\
1315 -mkd11e* KD11-E CPU. enable full EIS, MTPS, and MFPS\n\
1316 -mkd11f* KD11-F CPU. enable limited EIS, MTPS, and MFPS\n\
1317 -mkd11h* KD11-H CPU. enable limited EIS, MTPS, and MFPS\n\
1318 -mkd11q* KD11-Q CPU. enable limited EIS, MTPS, and MFPS\n\
1319 -mkd11k* KD11-K CPU. enable full EIS, MTPS, MFPS, LDUB, MED,\n\
1321 -mkd11z* KD11-Z CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1323 -mf11* F11 CPU. enable full EIS, MFPS, MTPS, and MFPT\n\
1324 -mj11* J11 CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1325 CSM, TSTSET, and WRTLCK\n\
1326 -mt11* T11 CPU. enable limited EIS, MTPS, and MFPS\n\
1328 PDP-11 machine model options:\n\
1330 -m11/03 same as -mkd11f\n\
1331 -m11/04 same as -mkd11d\n\
1332 -m11/05 same as -mkd11b\n\
1333 -m11/10 same as -mkd11b\n\
1334 -m11/15 same as -mka11\n\
1335 -m11/20 same as -mka11\n\
1336 -m11/21 same as -mt11\n\
1337 -m11/23 same as -mf11\n\
1338 -m11/24 same as -mf11\n\
1339 -m11/34 same as -mkd11e\n\
1340 -m11/34a same as -mkd11e -mfpp\n\
1341 -m11/35 same as -mkd11a\n\
1342 -m11/40 same as -mkd11a\n\
1343 -m11/44 same as -mkd11z\n\
1344 -m11/45 same as -mkb11\n\
1345 -m11/50 same as -mkb11\n\
1346 -m11/53 same as -mj11\n\
1347 -m11/55 same as -mkb11\n\
1348 -m11/60 same as -mkd11k\n\
1349 -m11/70 same as -mkb11\n\
1350 -m11/73 same as -mj11\n\
1351 -m11/83 same as -mj11\n\
1352 -m11/84 same as -mj11\n\
1353 -m11/93 same as -mj11\n\
1354 -m11/94 same as -mj11\n\
1359 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
1365 md_section_align (segT segment ATTRIBUTE_UNUSED,
1368 return (size + 1) & ~1;
1372 md_pcrel_from (fixS *fixP)
1374 return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size;
1377 /* Translate internal representation of relocation info to BFD target
1381 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
1385 bfd_reloc_code_real_type code;
1387 reloc = XNEW (arelent);
1389 reloc->sym_ptr_ptr = XNEW (asymbol *);
1390 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
1391 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1393 /* This is taken account for in md_apply_fix(). */
1394 reloc->addend = -symbol_get_bfdsym (fixp->fx_addsy)->section->vma;
1396 switch (fixp->fx_r_type)
1400 code = BFD_RELOC_16_PCREL;
1402 code = BFD_RELOC_16;
1405 case BFD_RELOC_16_PCREL:
1406 code = BFD_RELOC_16_PCREL;
1410 BAD_CASE (fixp->fx_r_type);
1414 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
1416 if (reloc->howto == NULL)
1418 as_bad_where (fixp->fx_file, fixp->fx_line,
1419 _("Can not represent %s relocation in this object file format"),
1420 bfd_get_reloc_code_name (code));
1428 pseudo_bss (int c ATTRIBUTE_UNUSED)
1432 temp = get_absolute_expression ();
1433 subseg_set (bss_section, temp);
1434 demand_empty_rest_of_line ();
1438 pseudo_even (int c ATTRIBUTE_UNUSED)
1440 int alignment = 1; /* 2^1 */
1441 frag_align (alignment, 0, 1);
1442 record_alignment (now_seg, alignment);
1446 md_atof (int type, char * litP, int * sizeP)
1448 return vax_md_atof (type, litP, sizeP);