1 /* tc-pdp11.c - pdp11-specific -
2 Copyright (C) 2001-2020 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;
226 con
[0] = (value
>> 48) & 0xff;
227 con
[1] = (value
>> 56) & 0xff;
228 con
[2] = (value
>> 32) & 0xff;
229 con
[3] = (value
>> 40) & 0xff;
230 con
[4] = (value
>> 16) & 0xff;
231 con
[5] = (value
>> 24) & 0xff;
232 con
[6] = value
& 0xff;
233 con
[7] = (value
>> 8) & 0xff;
240 /* Fix up some data or instructions after we find out the value of a symbol
241 that they reference. Knows about order of bytes in address. */
244 md_apply_fix (fixS
*fixP
,
246 segT seg ATTRIBUTE_UNUSED
)
255 buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
256 size
= fixP
->fx_size
;
257 code
= md_chars_to_number ((unsigned char *) buf
, size
);
259 switch (fixP
->fx_r_type
)
266 case BFD_RELOC_16_PCREL
:
274 case BFD_RELOC_PDP11_DISP_8_PCREL
:
278 case BFD_RELOC_PDP11_DISP_6_PCREL
:
284 BAD_CASE (fixP
->fx_r_type
);
287 if (fixP
->fx_addsy
!= NULL
)
288 val
+= symbol_get_bfdsym (fixP
->fx_addsy
)->section
->vma
;
289 /* *value += fixP->fx_addsy->bsym->section->vma; */
292 code
|= (val
>> shift
) & mask
;
293 number_to_chars_littleendian (buf
, code
, size
);
295 if (fixP
->fx_addsy
== NULL
&& fixP
->fx_pcrel
== 0)
300 md_chars_to_number (unsigned char *con
, int nbytes
)
302 /* On a PDP-11, 0x1234 is stored as "\x12\x34", and
303 0x12345678 is stored as "\x56\x78\x12\x34". It's
304 anyone's guess what 0x123456 would be stored like. */
312 return (con
[1] << BITS_PER_CHAR
) | con
[0];
315 (((con
[1] << BITS_PER_CHAR
) | con
[0]) << (2 * BITS_PER_CHAR
))
316 |((con
[3] << BITS_PER_CHAR
) | con
[2]);
324 skip_whitespace (char *str
)
326 while (*str
== ' ' || *str
== '\t')
332 find_whitespace (char *str
)
334 while (*str
!= ' ' && *str
!= '\t' && *str
!= 0)
340 parse_reg (char *str
, struct pdp11_code
*operand
)
342 str
= skip_whitespace (str
);
343 if (TOLOWER (*str
) == 'r')
348 case '0': case '1': case '2': case '3':
349 case '4': case '5': case '6': case '7':
350 operand
->code
= *str
- '0';
354 operand
->error
= _("Bad register name");
358 else if (strncmp (str
, "sp", 2) == 0
359 || strncmp (str
, "SP", 2) == 0)
364 else if (strncmp (str
, "pc", 2) == 0
365 || strncmp (str
, "PC", 2) == 0)
372 operand
->error
= _("Bad register name");
376 if (ISALNUM (*str
) || *str
== '_' || *str
== '.')
378 operand
->error
= _("Bad register name");
386 parse_ac5 (char *str
, struct pdp11_code
*operand
)
388 str
= skip_whitespace (str
);
389 if (strncmp (str
, "fr", 2) == 0
390 || strncmp (str
, "FR", 2) == 0
391 || strncmp (str
, "ac", 2) == 0
392 || strncmp (str
, "AC", 2) == 0)
397 case '0': case '1': case '2': case '3':
399 operand
->code
= *str
- '0';
403 operand
->error
= _("Bad register name");
409 operand
->error
= _("Bad register name");
417 parse_ac (char *str
, struct pdp11_code
*operand
)
419 str
= parse_ac5 (str
, operand
);
420 if (!operand
->error
&& operand
->code
> 3)
422 operand
->error
= _("Bad register name");
430 parse_expression (char *str
, struct pdp11_code
*operand
)
432 char *save_input_line_pointer
;
435 save_input_line_pointer
= input_line_pointer
;
436 input_line_pointer
= str
;
437 seg
= expression (&operand
->reloc
.exp
);
440 input_line_pointer
= save_input_line_pointer
;
441 operand
->error
= _("Error in expression");
445 str
= input_line_pointer
;
446 input_line_pointer
= save_input_line_pointer
;
448 operand
->reloc
.pc_rel
= 0;
454 parse_op_no_deferred (char *str
, struct pdp11_code
*operand
)
456 LITTLENUM_TYPE literal_float
[2];
458 str
= skip_whitespace (str
);
462 case '(': /* (rn) and (rn)+ */
463 str
= parse_reg (str
+ 1, operand
);
466 str
= skip_whitespace (str
);
469 operand
->error
= _("Missing ')'");
475 operand
->code
|= 020;
480 operand
->code
|= 010;
487 str
= parse_expression (str
+ 1, operand
);
490 operand
->additional
= TRUE
;
491 operand
->word
= operand
->reloc
.exp
.X_add_number
;
492 switch (operand
->reloc
.exp
.X_op
)
499 operand
->reloc
.type
= BFD_RELOC_16
;
500 operand
->reloc
.pc_rel
= 0;
503 if (operand
->reloc
.exp
.X_add_number
> 0)
505 operand
->error
= _("Error in expression");
508 /* It's a floating literal... */
509 know (operand
->reloc
.exp
.X_add_number
< 0);
510 flonum_gen2vax ('f', &generic_floating_point_number
, literal_float
);
511 operand
->word
= literal_float
[0];
512 if (literal_float
[1] != 0)
513 as_warn (_("Low order bits truncated in immediate float operand"));
516 operand
->error
= _("Error in expression");
522 /* label, d(rn), -(rn) */
525 if (strncmp (str
, "-(", 2) == 0) /* -(rn) */
527 str
= parse_reg (str
+ 2, operand
);
530 str
= skip_whitespace (str
);
533 operand
->error
= _("Missing ')'");
536 operand
->code
|= 040;
541 str
= parse_expression (str
, operand
);
545 str
= skip_whitespace (str
);
550 operand
->additional
= 1;
552 operand
->reloc
.type
= BFD_RELOC_16_PCREL
;
553 operand
->reloc
.pc_rel
= 1;
559 str
= parse_reg (str
, operand
);
563 str
= skip_whitespace (str
);
567 operand
->error
= _("Missing ')'");
572 operand
->additional
= TRUE
;
573 operand
->code
|= 060;
574 switch (operand
->reloc
.exp
.X_op
)
577 operand
->reloc
.type
= BFD_RELOC_16
;
578 operand
->reloc
.pc_rel
= 0;
581 if ((operand
->code
& 7) == 7)
583 operand
->reloc
.pc_rel
= 1;
584 operand
->word
= operand
->reloc
.exp
.X_add_number
;
587 operand
->word
= operand
->reloc
.exp
.X_add_number
;
591 BAD_CASE (operand
->reloc
.exp
.X_op
);
601 parse_op_noreg (char *str
, struct pdp11_code
*operand
)
603 str
= skip_whitespace (str
);
604 operand
->error
= NULL
;
606 if (*str
== '@' || *str
== '*')
608 /* @(Rn) == @0(Rn): Mode 7, Indexed deferred.
609 Check for auto-increment deferred. */
616 /* Change implied to explicit index deferred. */
618 str
= parse_op_no_deferred (str
, operand
);
622 /* @Rn == (Rn): Register deferred. */
623 str
= parse_reg (str
+ 1, operand
);
628 operand
->error
= NULL
;
629 str
= parse_op_no_deferred (str
, operand
);
636 operand
->code
|= 010;
639 str
= parse_op_no_deferred (str
, operand
);
645 parse_op (char *str
, struct pdp11_code
*operand
)
647 str
= skip_whitespace (str
);
649 str
= parse_reg (str
, operand
);
653 operand
->error
= NULL
;
654 parse_ac5 (str
, operand
);
657 operand
->error
= _("Float AC not legal as integer operand");
661 return parse_op_noreg (str
, operand
);
665 parse_fop (char *str
, struct pdp11_code
*operand
)
667 str
= skip_whitespace (str
);
669 str
= parse_ac5 (str
, operand
);
673 operand
->error
= NULL
;
674 parse_reg (str
, operand
);
677 operand
->error
= _("General register not legal as float operand");
681 return parse_op_noreg (str
, operand
);
685 parse_separator (char *str
, int *error
)
687 str
= skip_whitespace (str
);
688 *error
= (*str
!= ',');
695 md_assemble (char *instruction_string
)
697 const struct pdp11_opcode
*op
;
698 struct pdp11_code insn
, op1
, op2
;
701 const char *err
= NULL
;
706 str
= skip_whitespace (instruction_string
);
707 p
= find_whitespace (str
);
710 as_bad (_("No instruction found"));
716 op
= (struct pdp11_opcode
*)hash_find (insn_hash
, str
);
720 as_bad (_("Unknown instruction '%s'"), str
);
724 if (!pdp11_extension
[op
->extension
])
726 as_warn (_("Unsupported instruction set extension: %s"), op
->name
);
731 insn
.code
= op
->opcode
;
732 insn
.reloc
.type
= BFD_RELOC_NONE
;
734 op1
.additional
= FALSE
;
735 op1
.reloc
.type
= BFD_RELOC_NONE
;
737 op2
.additional
= FALSE
;
738 op2
.reloc
.type
= BFD_RELOC_NONE
;
745 case PDP11_OPCODE_NO_OPS
:
746 str
= skip_whitespace (str
);
749 case PDP11_OPCODE_IMM3
:
750 case PDP11_OPCODE_IMM6
:
751 case PDP11_OPCODE_IMM8
:
752 str
= skip_whitespace (str
);
753 if (*str
== '#' || *str
== '$')
755 str
= parse_expression (str
, &op1
);
758 if (op1
.reloc
.exp
.X_op
!= O_constant
|| op1
.reloc
.type
!= BFD_RELOC_NONE
)
760 op1
.error
= _("operand is not an absolute constant");
765 case PDP11_OPCODE_IMM3
:
766 if (op1
.reloc
.exp
.X_add_number
& ~7)
768 op1
.error
= _("3-bit immediate out of range");
772 case PDP11_OPCODE_IMM6
:
773 if (op1
.reloc
.exp
.X_add_number
& ~0x3f)
775 op1
.error
= _("6-bit immediate out of range");
779 case PDP11_OPCODE_IMM8
:
780 if (op1
.reloc
.exp
.X_add_number
& ~0xff)
782 op1
.error
= _("8-bit immediate out of range");
787 insn
.code
|= op1
.reloc
.exp
.X_add_number
;
790 case PDP11_OPCODE_DISPL
:
793 new_pointer
= parse_expression (str
, &op1
);
795 op1
.reloc
.pc_rel
= 1;
796 op1
.reloc
.type
= BFD_RELOC_PDP11_DISP_8_PCREL
;
797 if (op1
.reloc
.exp
.X_op
!= O_symbol
)
799 op1
.error
= _("Symbol expected");
802 if (op1
.code
& ~0xff)
804 err
= _("8-bit displacement out of range");
808 insn
.code
|= op1
.code
;
809 insn
.reloc
= op1
.reloc
;
813 case PDP11_OPCODE_REG
:
814 str
= parse_reg (str
, &op1
);
817 insn
.code
|= op1
.code
;
820 case PDP11_OPCODE_OP
:
821 str
= parse_op (str
, &op1
);
824 insn
.code
|= op1
.code
;
829 case PDP11_OPCODE_FOP
:
830 str
= parse_fop (str
, &op1
);
833 insn
.code
|= op1
.code
;
838 case PDP11_OPCODE_REG_OP
:
839 str
= parse_reg (str
, &op2
);
842 insn
.code
|= op2
.code
<< 6;
843 str
= parse_separator (str
, &error
);
846 op2
.error
= _("Missing ','");
849 str
= parse_op (str
, &op1
);
852 insn
.code
|= op1
.code
;
857 case PDP11_OPCODE_REG_OP_REV
:
858 str
= parse_op (str
, &op1
);
861 insn
.code
|= op1
.code
;
864 str
= parse_separator (str
, &error
);
867 op2
.error
= _("Missing ','");
870 str
= parse_reg (str
, &op2
);
873 insn
.code
|= op2
.code
<< 6;
876 case PDP11_OPCODE_AC_FOP
:
877 str
= parse_ac (str
, &op2
);
880 insn
.code
|= op2
.code
<< 6;
881 str
= parse_separator (str
, &error
);
884 op1
.error
= _("Missing ','");
887 str
= parse_fop (str
, &op1
);
890 insn
.code
|= op1
.code
;
895 case PDP11_OPCODE_FOP_AC
:
896 str
= parse_fop (str
, &op1
);
899 insn
.code
|= op1
.code
;
902 str
= parse_separator (str
, &error
);
905 op1
.error
= _("Missing ','");
908 str
= parse_ac (str
, &op2
);
911 insn
.code
|= op2
.code
<< 6;
914 case PDP11_OPCODE_AC_OP
:
915 str
= parse_ac (str
, &op2
);
918 insn
.code
|= op2
.code
<< 6;
919 str
= parse_separator (str
, &error
);
922 op1
.error
= _("Missing ','");
925 str
= parse_op (str
, &op1
);
928 insn
.code
|= op1
.code
;
933 case PDP11_OPCODE_OP_AC
:
934 str
= parse_op (str
, &op1
);
937 insn
.code
|= op1
.code
;
940 str
= parse_separator (str
, &error
);
943 op1
.error
= _("Missing ','");
946 str
= parse_ac (str
, &op2
);
949 insn
.code
|= op2
.code
<< 6;
952 case PDP11_OPCODE_OP_OP
:
953 str
= parse_op (str
, &op1
);
956 insn
.code
|= op1
.code
<< 6;
959 str
= parse_separator (str
, &error
);
962 op2
.error
= _("Missing ','");
965 str
= parse_op (str
, &op2
);
968 insn
.code
|= op2
.code
;
973 case PDP11_OPCODE_REG_DISPL
:
976 str
= parse_reg (str
, &op2
);
979 insn
.code
|= op2
.code
<< 6;
980 str
= parse_separator (str
, &error
);
983 op1
.error
= _("Missing ','");
986 new_pointer
= parse_expression (str
, &op1
);
988 op1
.reloc
.pc_rel
= 1;
989 op1
.reloc
.type
= BFD_RELOC_PDP11_DISP_6_PCREL
;
990 if (op1
.reloc
.exp
.X_op
!= O_symbol
)
992 op1
.error
= _("Symbol expected");
995 if (op1
.code
& ~0x3f)
997 err
= _("6-bit displacement out of range");
1001 insn
.code
|= op1
.code
;
1002 insn
.reloc
= op1
.reloc
;
1007 BAD_CASE (op
->type
);
1016 str
= skip_whitespace (str
);
1018 err
= _("Too many operands");
1030 to
= frag_more (size
);
1032 md_number_to_chars (to
, insn
.code
, 2);
1033 if (insn
.reloc
.type
!= BFD_RELOC_NONE
)
1034 fix_new_exp (frag_now
, to
- frag_now
->fr_literal
, 2,
1035 &insn
.reloc
.exp
, insn
.reloc
.pc_rel
, insn
.reloc
.type
);
1040 md_number_to_chars (to
, op1
.word
, 2);
1041 if (op1
.reloc
.type
!= BFD_RELOC_NONE
)
1042 fix_new_exp (frag_now
, to
- frag_now
->fr_literal
, 2,
1043 &op1
.reloc
.exp
, op1
.reloc
.pc_rel
, op1
.reloc
.type
);
1049 md_number_to_chars (to
, op2
.word
, 2);
1050 if (op2
.reloc
.type
!= BFD_RELOC_NONE
)
1051 fix_new_exp (frag_now
, to
- frag_now
->fr_literal
, 2,
1052 &op2
.reloc
.exp
, op2
.reloc
.pc_rel
, op2
.reloc
.type
);
1058 md_estimate_size_before_relax (fragS
*fragP ATTRIBUTE_UNUSED
,
1059 segT segment ATTRIBUTE_UNUSED
)
1065 md_convert_frag (bfd
*headers ATTRIBUTE_UNUSED
,
1066 segT seg ATTRIBUTE_UNUSED
,
1067 fragS
*fragP ATTRIBUTE_UNUSED
)
1071 int md_short_jump_size
= 2;
1072 int md_long_jump_size
= 4;
1075 md_create_short_jump (char *ptr ATTRIBUTE_UNUSED
,
1076 addressT from_addr ATTRIBUTE_UNUSED
,
1077 addressT to_addr ATTRIBUTE_UNUSED
,
1078 fragS
*frag ATTRIBUTE_UNUSED
,
1079 symbolS
*to_symbol ATTRIBUTE_UNUSED
)
1084 md_create_long_jump (char *ptr ATTRIBUTE_UNUSED
,
1085 addressT from_addr ATTRIBUTE_UNUSED
,
1086 addressT to_addr ATTRIBUTE_UNUSED
,
1087 fragS
*frag ATTRIBUTE_UNUSED
,
1088 symbolS
*to_symbol ATTRIBUTE_UNUSED
)
1093 set_cpu_model (const char *arg
)
1103 if (strchr ("abdx", model
[-1]) == NULL
)
1106 if (model
[-1] == 'd')
1108 if (arg
[0] == 'f' || arg
[0] == 'j')
1111 else if (model
[-1] == 'x')
1120 if (strncmp (arg
, "11", 2) != 0)
1130 /* Allow up to two revision letters. */
1138 set_option ("no-extensions");
1140 /* KA11 (11/15/20). */
1141 if (strncmp (buf
, "a", 1) == 0)
1142 return 1; /* No extensions. */
1144 /* KB11 (11/45/50/55/70). */
1145 else if (strncmp (buf
, "b", 1) == 0)
1146 return set_option ("eis") && set_option ("spl");
1148 /* KD11-A (11/35/40). */
1149 else if (strncmp (buf
, "da", 2) == 0)
1150 return set_option ("limited-eis");
1152 /* KD11-B (11/05/10). */
1153 else if (strncmp (buf
, "db", 2) == 0
1154 /* KD11-D (11/04). */
1155 || strncmp (buf
, "dd", 2) == 0)
1156 return 1; /* no extensions */
1158 /* KD11-E (11/34). */
1159 else if (strncmp (buf
, "de", 2) == 0)
1160 return set_option ("eis") && set_option ("mxps");
1162 /* KD11-F (11/03). */
1163 else if (strncmp (buf
, "df", 2) == 0
1164 /* KD11-H (11/03). */
1165 || strncmp (buf
, "dh", 2) == 0
1166 /* KD11-Q (11/03). */
1167 || strncmp (buf
, "dq", 2) == 0)
1168 return set_option ("limited-eis") && set_option ("mxps");
1170 /* KD11-K (11/60). */
1171 else if (strncmp (buf
, "dk", 2) == 0)
1172 return set_option ("eis")
1173 && set_option ("mxps")
1174 && set_option ("ucode");
1176 /* KD11-Z (11/44). */
1177 else if (strncmp (buf
, "dz", 2) == 0)
1178 return set_option ("csm")
1179 && set_option ("eis")
1180 && set_option ("mfpt")
1181 && set_option ("mxps")
1182 && set_option ("spl");
1184 /* F11 (11/23/24). */
1185 else if (strncmp (buf
, "f", 1) == 0)
1186 return set_option ("eis")
1187 && set_option ("mfpt")
1188 && set_option ("mxps");
1190 /* J11 (11/53/73/83/84/93/94). */
1191 else if (strncmp (buf
, "j", 1) == 0)
1192 return set_option ("csm")
1193 && set_option ("eis")
1194 && set_option ("mfpt")
1195 && set_option ("multiproc")
1196 && set_option ("mxps")
1197 && set_option ("spl");
1200 else if (strncmp (buf
, "t", 1) == 0)
1201 return set_option ("limited-eis")
1202 && set_option ("mxps");
1209 set_machine_model (const char *arg
)
1211 if (strncmp (arg
, "pdp-11/", 7) != 0
1212 && strncmp (arg
, "pdp11/", 6) != 0
1213 && strncmp (arg
, "11/", 3) != 0)
1216 if (strncmp (arg
, "pdp", 3) == 0)
1220 if (strncmp (arg
, "11/", 3) == 0)
1223 if (strcmp (arg
, "03") == 0)
1224 return set_cpu_model ("kd11f");
1226 else if (strcmp (arg
, "04") == 0)
1227 return set_cpu_model ("kd11d");
1229 else if (strcmp (arg
, "05") == 0
1230 || strcmp (arg
, "10") == 0)
1231 return set_cpu_model ("kd11b");
1233 else if (strcmp (arg
, "15") == 0
1234 || strcmp (arg
, "20") == 0)
1235 return set_cpu_model ("ka11");
1237 else if (strcmp (arg
, "21") == 0)
1238 return set_cpu_model ("t11");
1240 else if (strcmp (arg
, "23") == 0
1241 || strcmp (arg
, "24") == 0)
1242 return set_cpu_model ("f11");
1244 else if (strcmp (arg
, "34") == 0
1245 || strcmp (arg
, "34a") == 0)
1246 return set_cpu_model ("kd11e");
1248 else if (strcmp (arg
, "35") == 0
1249 || strcmp (arg
, "40") == 0)
1250 return set_cpu_model ("kd11da");
1252 else if (strcmp (arg
, "44") == 0)
1253 return set_cpu_model ("kd11dz");
1255 else if (strcmp (arg
, "45") == 0
1256 || strcmp (arg
, "50") == 0
1257 || strcmp (arg
, "55") == 0
1258 || strcmp (arg
, "70") == 0)
1259 return set_cpu_model ("kb11");
1261 else if (strcmp (arg
, "60") == 0)
1262 return set_cpu_model ("kd11k");
1264 else if (strcmp (arg
, "53") == 0
1265 || strcmp (arg
, "73") == 0
1266 || strcmp (arg
, "83") == 0
1267 || strcmp (arg
, "84") == 0
1268 || strcmp (arg
, "93") == 0
1269 || strcmp (arg
, "94") == 0)
1270 return set_cpu_model ("j11")
1271 && set_option ("fpp");
1277 const char *md_shortopts
= "m:";
1279 struct option md_longopts
[] =
1281 #define OPTION_CPU 257
1282 { "cpu", required_argument
, NULL
, OPTION_CPU
},
1283 #define OPTION_MACHINE 258
1284 { "machine", required_argument
, NULL
, OPTION_MACHINE
},
1285 #define OPTION_PIC 259
1286 { "pic", no_argument
, NULL
, OPTION_PIC
},
1287 { NULL
, no_argument
, NULL
, 0 }
1290 size_t md_longopts_size
= sizeof (md_longopts
);
1292 /* Invocation line includes a switch not recognized by the base assembler.
1293 See if it's a processor-specific option. */
1296 md_parse_option (int c
, const char *arg
)
1303 if (set_option (arg
))
1305 if (set_cpu_model (arg
))
1307 if (set_machine_model (arg
))
1312 if (set_cpu_model (arg
))
1316 case OPTION_MACHINE
:
1317 if (set_machine_model (arg
))
1322 if (set_option ("pic"))
1334 md_show_usage (FILE *stream
)
1338 PDP-11 instruction set extensions:\n\
1340 -m(no-)cis allow (disallow) commercial instruction set\n\
1341 -m(no-)csm allow (disallow) CSM instruction\n\
1342 -m(no-)eis allow (disallow) full extended instruction set\n\
1343 -m(no-)fis allow (disallow) KEV11 floating-point instructions\n\
1344 -m(no-)fpp allow (disallow) FP-11 floating-point instructions\n\
1345 -m(no-)fpu allow (disallow) FP-11 floating-point instructions\n\
1346 -m(no-)limited-eis allow (disallow) limited extended instruction set\n\
1347 -m(no-)mfpt allow (disallow) processor type instruction\n\
1348 -m(no-)multiproc allow (disallow) multiprocessor instructions\n\
1349 -m(no-)mxps allow (disallow) processor status instructions\n\
1350 -m(no-)spl allow (disallow) SPL instruction\n\
1351 -m(no-)ucode allow (disallow) microcode instructions\n\
1352 -mall-extensions allow all instruction set extensions\n\
1353 (this is the default)\n\
1354 -mno-extensions disallow all instruction set extensions\n\
1355 -pic generate position-independent code\n\
1357 PDP-11 CPU model options:\n\
1359 -mka11* KA11 CPU. base line instruction set only\n\
1360 -mkb11* KB11 CPU. enable full EIS and SPL\n\
1361 -mkd11a* KD11-A CPU. enable limited EIS\n\
1362 -mkd11b* KD11-B CPU. base line instruction set only\n\
1363 -mkd11d* KD11-D CPU. base line instruction set only\n\
1364 -mkd11e* KD11-E CPU. enable full EIS, MTPS, and MFPS\n\
1365 -mkd11f* KD11-F CPU. enable limited EIS, MTPS, and MFPS\n\
1366 -mkd11h* KD11-H CPU. enable limited EIS, MTPS, and MFPS\n\
1367 -mkd11q* KD11-Q CPU. enable limited EIS, MTPS, and MFPS\n\
1368 -mkd11k* KD11-K CPU. enable full EIS, MTPS, MFPS, LDUB, MED,\n\
1370 -mkd11z* KD11-Z CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1372 -mf11* F11 CPU. enable full EIS, MFPS, MTPS, and MFPT\n\
1373 -mj11* J11 CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\
1374 CSM, TSTSET, and WRTLCK\n\
1375 -mt11* T11 CPU. enable limited EIS, MTPS, and MFPS\n\
1377 PDP-11 machine model options:\n\
1379 -m11/03 same as -mkd11f\n\
1380 -m11/04 same as -mkd11d\n\
1381 -m11/05 same as -mkd11b\n\
1382 -m11/10 same as -mkd11b\n\
1383 -m11/15 same as -mka11\n\
1384 -m11/20 same as -mka11\n\
1385 -m11/21 same as -mt11\n\
1386 -m11/23 same as -mf11\n\
1387 -m11/24 same as -mf11\n\
1388 -m11/34 same as -mkd11e\n\
1389 -m11/34a same as -mkd11e -mfpp\n\
1390 -m11/35 same as -mkd11a\n\
1391 -m11/40 same as -mkd11a\n\
1392 -m11/44 same as -mkd11z\n\
1393 -m11/45 same as -mkb11\n\
1394 -m11/50 same as -mkb11\n\
1395 -m11/53 same as -mj11\n\
1396 -m11/55 same as -mkb11\n\
1397 -m11/60 same as -mkd11k\n\
1398 -m11/70 same as -mkb11\n\
1399 -m11/73 same as -mj11\n\
1400 -m11/83 same as -mj11\n\
1401 -m11/84 same as -mj11\n\
1402 -m11/93 same as -mj11\n\
1403 -m11/94 same as -mj11\n\
1408 md_undefined_symbol (char *name ATTRIBUTE_UNUSED
)
1414 md_section_align (segT segment ATTRIBUTE_UNUSED
,
1417 return (size
+ 1) & ~1;
1421 md_pcrel_from (fixS
*fixP
)
1423 return fixP
->fx_frag
->fr_address
+ fixP
->fx_where
+ fixP
->fx_size
;
1426 /* Translate internal representation of relocation info to BFD target
1430 tc_gen_reloc (asection
*section ATTRIBUTE_UNUSED
,
1434 bfd_reloc_code_real_type code
;
1436 reloc
= XNEW (arelent
);
1438 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
1439 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
1440 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1442 /* This is taken account for in md_apply_fix(). */
1443 reloc
->addend
= -symbol_get_bfdsym (fixp
->fx_addsy
)->section
->vma
;
1445 code
= fixp
->fx_r_type
;
1451 code
= BFD_RELOC_16_PCREL
;
1454 case BFD_RELOC_16_PCREL
:
1463 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
1465 if (reloc
->howto
== NULL
)
1467 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1468 _("Can not represent %s relocation in this object file format"),
1469 bfd_get_reloc_code_name (code
));
1477 pseudo_bss (int c ATTRIBUTE_UNUSED
)
1481 temp
= get_absolute_expression ();
1482 subseg_set (bss_section
, temp
);
1483 demand_empty_rest_of_line ();
1487 pseudo_even (int c ATTRIBUTE_UNUSED
)
1489 int alignment
= 1; /* 2^1 */
1490 frag_align (alignment
, 0, 1);
1491 record_alignment (now_seg
, alignment
);
1495 md_atof (int type
, char * litP
, int * sizeP
)
1497 return vax_md_atof (type
, litP
, sizeP
);