1 /* tc-pdp11.c - pdp11-specific -
2 Copyright (C) 2001-2017 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 /* Commercial 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 anyone's 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 anyone's 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) commercial 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-extensions disallow all instruction set extensions\n\
1306 -pic generate position-independent 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
);