1 /* tc-dlx.c -- Assemble for the DLX
2 Copyright (C) 2002-2020 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 the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 /* Initially created by Kuang Hwa Lin, 3/20/2002. */
24 #include "safe-ctype.h"
26 #include "opcode/dlx.h"
28 #include "bfd/elf32-dlx.h"
30 /* Make it easier to clone this machine desc into another one. */
31 #define machine_opcode dlx_opcode
32 #define machine_opcodes dlx_opcodes
33 #define machine_ip dlx_ip
34 #define machine_it dlx_it
36 #define NO_RELOC BFD_RELOC_NONE
37 #define RELOC_DLX_REL26 BFD_RELOC_DLX_JMP26
38 #define RELOC_DLX_16 BFD_RELOC_16
39 #define RELOC_DLX_REL16 BFD_RELOC_16_PCREL_S2
40 #define RELOC_DLX_HI16 BFD_RELOC_HI16_S
41 #define RELOC_DLX_LO16 BFD_RELOC_LO16
42 #define RELOC_DLX_VTINHERIT BFD_RELOC_VTABLE_INHERIT
43 #define RELOC_DLX_VTENTRY BFD_RELOC_VTABLE_ENTRY
45 /* handle of the OPCODE hash table */
46 static htab_t op_hash
= NULL
;
56 int reloc_offset
; /* Offset of reloc within insn. */
57 bfd_reloc_code_real_type reloc
;
63 /* This array holds the chars that always start a comment. If the
64 pre-processor is disabled, these aren't very useful. */
65 const char comment_chars
[] = ";";
67 /* This array holds the chars that only start a comment at the beginning of
68 a line. If the line seems to have the form '# 123 filename'
69 .line and .file directives will appear in the pre-processed output. */
70 /* Note that input_file.c hand checks for '#' at the beginning of the
71 first line of the input file. This is because the compiler outputs
72 #NO_APP at the beginning of its output. */
73 /* Also note that comments like this one will always work. */
74 const char line_comment_chars
[] = "#";
76 /* We needed an unused char for line separation to work around the
77 lack of macros, using sed and such. */
78 const char line_separator_chars
[] = "@";
80 /* Chars that can be used to separate mant from exp in floating point nums. */
81 const char EXP_CHARS
[] = "eE";
83 /* Chars that mean this number is a floating point constant.
86 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
89 insert_sreg (const char *regname
, int regnum
)
91 /* Must be large enough to hold the names of the special registers. */
95 symbol_table_insert (symbol_new (regname
, reg_section
,
96 &zero_address_frag
, regnum
));
97 for (i
= 0; regname
[i
]; i
++)
98 buf
[i
] = ISLOWER (regname
[i
]) ? TOUPPER (regname
[i
]) : regname
[i
];
101 symbol_table_insert (symbol_new (buf
, reg_section
,
102 &zero_address_frag
, regnum
));
105 /* Install symbol definitions for assorted special registers.
106 See MIPS Assembly Language Programmer's Guide page 1-4 */
109 define_some_regs (void)
111 /* Software representation. */
112 insert_sreg ("zero", 0);
113 insert_sreg ("at", 1);
114 insert_sreg ("v0", 2);
115 insert_sreg ("v1", 3);
116 insert_sreg ("a0", 4);
117 insert_sreg ("a1", 5);
118 insert_sreg ("a2", 6);
119 insert_sreg ("a3", 7);
120 insert_sreg ("t0", 8);
121 insert_sreg ("t1", 9);
122 insert_sreg ("t2", 10);
123 insert_sreg ("t3", 11);
124 insert_sreg ("t4", 12);
125 insert_sreg ("t5", 13);
126 insert_sreg ("t6", 14);
127 insert_sreg ("t7", 15);
128 insert_sreg ("s0", 16);
129 insert_sreg ("s1", 17);
130 insert_sreg ("s2", 18);
131 insert_sreg ("s3", 19);
132 insert_sreg ("s4", 20);
133 insert_sreg ("s5", 21);
134 insert_sreg ("s6", 22);
135 insert_sreg ("s7", 23);
136 insert_sreg ("t8", 24);
137 insert_sreg ("t9", 25);
138 insert_sreg ("k0", 26);
139 insert_sreg ("k1", 27);
140 insert_sreg ("gp", 28);
141 insert_sreg ("sp", 29);
142 insert_sreg ("fp", 30);
143 insert_sreg ("ra", 31);
144 /* Special registers. */
145 insert_sreg ("pc", 0);
146 insert_sreg ("npc", 1);
147 insert_sreg ("iad", 2);
150 /* Subroutine check the string to match an register. */
153 match_sft_register (char *name
)
155 #define MAX_REG_NO 35
156 /* Currently we have 35 software registers defined -
157 we borrowed from MIPS. */
158 static const char *soft_reg
[] =
160 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
161 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9",
162 "s0", "s1", "s2", "s3", "s4", "s5", "s7", "k0", "k1",
163 "gp", "sp", "fp", "ra", "pc", "npc", "iad",
164 "EndofTab" /* End of the Table indicator */
166 char low_name
[21], *ptr
;
169 for (ptr
= name
,idx
= 0; *ptr
!= '\0'; ptr
++)
170 low_name
[idx
++] = TOLOWER (*ptr
);
172 low_name
[idx
] = '\0';
175 while (idx
< MAX_REG_NO
&& strcmp (soft_reg
[idx
], & low_name
[0]))
178 return idx
< MAX_REG_NO
;
181 /* Subroutine check the string to match an register. */
184 is_ldst_registers (char *name
)
188 /* The first character of the register name got to be either %, $, r of R. */
189 if ((ptr
[0] == '%' || ptr
[0] == '$' || ptr
[0] == 'r' || ptr
[0] == 'R')
190 && ISDIGIT ((unsigned char) ptr
[1]))
193 /* Now check the software register representation. */
194 return match_sft_register (ptr
);
197 /* Subroutine of s_proc so targets can choose a different default prefix.
198 If DEFAULT_PREFIX is NULL, use the target's "leading char". */
203 /* Record the current function so that we can issue an error message for
204 misplaced .func,.endfunc, and also so that .endfunc needs no
206 static char *current_name
;
207 static char *current_label
;
211 if (current_name
== NULL
)
213 as_bad (_("missing .proc"));
214 ignore_rest_of_line ();
218 current_name
= current_label
= NULL
;
220 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
221 input_line_pointer
++;
228 if (current_name
!= NULL
)
230 as_bad (_(".endfunc missing for previous .proc"));
231 ignore_rest_of_line ();
235 delim1
= get_symbol_name (&name
);
236 name
= xstrdup (name
);
237 *input_line_pointer
= delim1
;
238 SKIP_WHITESPACE_AFTER_NAME ();
240 if (*input_line_pointer
!= ',')
242 char leading_char
= 0;
244 leading_char
= bfd_get_symbol_leading_char (stdoutput
);
245 /* Missing entry point, use function's name with the leading
249 unsigned len
= strlen (name
) + 1;
250 label
= XNEWVEC (char, len
+ 1);
251 label
[0] = leading_char
;
252 memcpy (label
+ 1, name
, len
);
259 ++input_line_pointer
;
261 delim2
= get_symbol_name (&label
);
262 label
= xstrdup (label
);
263 (void) restore_line_pointer (delim2
);
267 current_label
= label
;
269 demand_empty_rest_of_line ();
272 /* This function is called once, at assembler startup time. It should
273 set up all the tables, etc., that the MD part of the assembler will
281 /* Create a new hash table. */
282 op_hash
= str_htab_create ();
284 /* Hash up all the opcodes for fast use later. */
285 for (i
= 0; i
< num_dlx_opcodes
; i
++)
287 const char *name
= machine_opcodes
[i
].name
;
288 str_hash_insert (op_hash
, name
, (void *) &machine_opcodes
[i
]);
294 /* This function will check the opcode and return 1 if the opcode is one
295 of the load/store instruction, and it will fix the operand string to
296 the standard form so we can use the standard parse_operand routine. */
298 #define READ_OP 0x100
299 #define WRITE_OP 0x200
300 static char iBuf
[81];
303 dlx_parse_loadop (char * str
)
308 /* The last pair of ()/[] is the register, all other are the
309 reloc displacement, and if there is a register then it ought
310 to have a pair of ()/[]
311 This is not necessarily true, what if the load instruction come
312 without the register and with %hi/%lo modifier? */
313 for (idx
= 0; idx
< 72 && ptr
[idx
] != '\0'; idx
++)
319 as_bad (_("Bad operand for a load instruction: <%s>"), str
);
326 char rs1
[7], rd
[7], endm
, match
= '0';
341 /* No register indicated, fill in zero. */
352 /* Searching for (/[ which will match the ]/). */
353 for (pb
= idx
- 1; str
[pb
] != match
; pb
-= 1)
354 /* Match can only be either '[' or '(', if it is
355 '(' then this can be a normal expression, we'll treat
357 if (str
[pb
] == endm
|| pb
< (idx
- 5))
361 for (i
= 0; (pb
+ i
) < idx
; i
++)
366 if (is_ldst_registers (& rs1
[0]))
367 /* Point to the last character of the imm. */
373 goto badoperand_load
;
374 /* No register indicated, fill in zero and restore the imm. */
382 /* Duplicate the first register. */
383 for (i
= 0; i
< 7 && str
[i
] != ','; i
++)
387 goto badoperand_load
;
393 /* Put the '\0' back in. */
396 for (i
++, m2
= 0; i
< pb
; m2
++,i
++)
401 /* Assemble the instruction to gas internal format. */
402 for (i
= 0; rd
[i
] != '\0'; i
++)
407 for (pb
= 0 ; rs1
[pb
] != '\0'; i
++, pb
++)
412 for (pb
= 0; imm
[pb
] != '\0'; i
++, pb
++)
421 dlx_parse_storeop (char * str
)
426 /* Search for the ','. */
427 for (idx
= 0; idx
< 72 && ptr
[idx
] != ','; idx
++)
433 as_bad (_("Bad operand for a store instruction: <%s>"), str
);
438 /* idx now points to the ','. */
442 char rs1
[7], rd
[7], endm
, match
= '0';
445 /* Now parse the '(' and ')', and make idx point to ')'. */
458 /* No register indicated, fill in zero. */
469 /* Searching for (/[ which will match the ]/). */
470 for (pb
= idx
- 1; str
[pb
] != match
; pb
-= 1)
471 if (pb
< (idx
- 5) || str
[pb
] == endm
)
475 for (i
= 0; (pb
+ i
) < idx
; i
++)
476 rs1
[i
] = str
[pb
+ i
];
480 if (is_ldst_registers (& rs1
[0]))
481 /* Point to the last character of the imm. */
487 goto badoperand_store
;
489 /* No register indicated, fill in zero and restore the imm. */
497 /* No register was specified. */
500 /* Duplicate the first register. */
501 for (i
= comma
+ 1; (str
[i
] == ' ' || str
[i
] == '\t'); i
++)
504 for (m2
= 0; (m2
< 7 && str
[i
] != '\0'); i
++, m2
++)
506 if (str
[i
] != ' ' && str
[i
] != '\t')
509 goto badoperand_store
;
513 goto badoperand_store
;
518 for (i
= 0; i
< pb
; i
++)
523 /* Assemble the instruction to gas internal format. */
524 for (i
= 0; rd
[i
] != '\0'; i
++)
527 for (pb
= 0 ; rs1
[pb
] != '\0'; i
++, pb
++)
530 for (pb
= 0; imm
[pb
] != '\0'; i
++, pb
++)
538 fix_ld_st_operand (unsigned long opcode
, char* str
)
540 /* Check the opcode. */
541 switch ((int) opcode
)
551 return dlx_parse_loadop (str
);
555 return dlx_parse_storeop (str
);
562 hilo_modifier_ok (char *s
)
570 for (idx
= 1; ptr
[idx
] != '\0' && ptr
[idx
] != '[' && idx
< 73; idx
+= 1)
582 return (count
== 0) ? 1:0;
586 parse_operand (char *s
, expressionS
*operandp
)
588 char *save
= input_line_pointer
;
591 the_insn
.HI
= the_insn
.LO
= 0;
593 /* Search for %hi and %lo, make a mark and skip it. */
594 if (strncmp (s
, "%hi", 3) == 0)
601 if (strncmp (s
, "%lo", 3) == 0)
610 if (the_insn
.HI
|| the_insn
.LO
)
612 if (!hilo_modifier_ok (s
))
613 as_bad (_("Expression Error for operand modifier %%hi/%%lo\n"));
616 /* Check for the % and $ register representation */
617 if ((s
[0] == '%' || s
[0] == '$' || s
[0] == 'r' || s
[0] == 'R')
618 && ISDIGIT ((unsigned char) s
[1]))
620 /* We have a numeric register expression. No biggy. */
622 input_line_pointer
= s
;
623 (void) expression (operandp
);
624 if (operandp
->X_op
!= O_constant
625 || operandp
->X_add_number
> 31)
626 as_bad (_("Invalid expression after %%%%\n"));
627 operandp
->X_op
= O_register
;
631 /* Normal operand parsing. */
632 input_line_pointer
= s
;
633 (void) expression (operandp
);
636 new_pos
= input_line_pointer
;
637 input_line_pointer
= save
;
641 /* Instruction parsing. Takes a string containing the opcode.
642 Operands are at input_line_pointer. Output is in the_insn.
643 Warnings or errors are generated. */
646 machine_ip (char *str
)
650 struct machine_opcode
*insn
;
651 unsigned long opcode
;
652 expressionS the_operand
;
653 expressionS
*operand
= &the_operand
;
654 unsigned int reg
, reg_shift
= 0;
656 memset (&the_insn
, '\0', sizeof (the_insn
));
657 the_insn
.reloc
= NO_RELOC
;
659 /* Fixup the opcode string to all lower cases, and also
660 allow numerical digits. */
664 for (; ISALNUM (*s
); ++s
)
673 /* FIXME-SOMEDAY more whitespace. */
679 as_bad (_("Unknown opcode: `%s'"), str
);
683 /* Hash the opcode, insn will have the string from opcode table. */
684 if ((insn
= (struct machine_opcode
*) str_hash_find (op_hash
, str
)) == NULL
)
686 /* Handle the ret and return macro here. */
687 if ((strcmp (str
, "ret") == 0) || (strcmp (str
, "return") == 0))
688 the_insn
.opcode
= JROP
| 0x03e00000; /* 0x03e00000 = r31 << 21 */
690 as_bad (_("Unknown opcode `%s'."), str
);
695 opcode
= insn
->opcode
;
697 /* Set the sip reloc HI16 flag. */
698 if (!set_dlx_skip_hi16_flag (1))
699 as_bad (_("Can not set dlx_skip_hi16_flag"));
701 /* Fix the operand string if it is one of load store instructions. */
702 s
= fix_ld_st_operand (opcode
, s
);
704 /* Build the opcode, checking as we go to make sure that the
706 If an operand matches, we modify the_insn or opcode appropriately,
707 and do a "continue". If an operand fails to match, we "break". */
708 if (insn
->args
[0] != '\0' && insn
->args
[0] != 'N')
710 /* Prime the pump. */
713 as_bad (_("Missing arguments for opcode <%s>."), str
);
717 s
= parse_operand (s
, operand
);
719 else if (insn
->args
[0] == 'N')
721 /* Clean up the insn and done! */
722 the_insn
.opcode
= opcode
;
726 /* Parse through the args (this is from opcode table), *s point to
727 the current character of the instruction stream. */
728 for (args
= insn
->args
;; ++args
)
737 /* We are truly done. */
738 the_insn
.opcode
= opcode
;
739 /* Clean up the HI and LO mark. */
747 as_bad (_("Too many operands: %s"), s
);
750 /* ',' Args separator */
752 /* Must match a comma. */
755 /* Parse next operand. */
756 s
= parse_operand (s
, operand
);
761 /* It can be a 'a' register or 'i' operand. */
763 /* Macro move operand/reg. */
764 if (operand
->X_op
== O_register
)
766 /* It's a register. */
772 /* The immediate 16 bits literal, bit 0-15. */
774 /* offset, unsigned. */
776 /* offset, signed. */
777 if (operand
->X_op
== O_constant
)
780 operand
->X_add_number
>>= 16;
782 opcode
|= operand
->X_add_number
& 0xFFFF;
784 if (the_insn
.HI
&& the_insn
.LO
)
785 as_bad (_("Both the_insn.HI and the_insn.LO are set : %s"), s
);
794 the_insn
.reloc
= (the_insn
.HI
) ? RELOC_DLX_HI16
795 : (the_insn
.LO
? RELOC_DLX_LO16
: RELOC_DLX_16
);
796 the_insn
.reloc_offset
= 2;
799 the_insn
.exp
= * operand
;
805 /* offset, signed. */
806 if (operand
->X_op
== O_constant
)
808 opcode
|= operand
->X_add_number
& 0xFFFF;
811 the_insn
.reloc
= RELOC_DLX_REL16
;
812 the_insn
.reloc_offset
= 0; /* BIG-ENDIAN Byte 3 of insn. */
815 the_insn
.exp
= *operand
;
818 /* The immediate 26 bits literal, bit 0-25. */
820 /* offset, signed. */
821 if (operand
->X_op
== O_constant
)
823 opcode
|= operand
->X_add_number
& 0x3FFFFFF;
826 the_insn
.reloc
= RELOC_DLX_REL26
;
827 the_insn
.reloc_offset
= 0; /* BIG-ENDIAN Byte 3 of insn. */
830 the_insn
.exp
= *operand
;
833 /* Type 'a' Register. */
835 /* A general register at bits 21-25, rs1. */
839 /* Type 'b' Register. */
841 /* A general register at bits 16-20, rs2/rd. */
845 /* Type 'c' Register. */
847 /* A general register at bits 11-15, rd. */
851 know (operand
->X_add_symbol
== 0);
852 know (operand
->X_op_symbol
== 0);
853 reg
= operand
->X_add_number
;
854 if (reg
& 0xffffffe0)
855 as_fatal (_("failed regnum sanity check."));
857 /* Got the register, now figure out where it goes in the opcode. */
858 opcode
|= reg
<< reg_shift
;
868 as_fatal (_("failed general register sanity check."));
875 /* Types or values of args don't match. */
876 as_bad (_("Invalid operands"));
881 /* Assemble a single instruction. Its label has already been handled
882 by the generic front end. We just parse opcode and operands, and
883 produce the bytes of data and relocation. */
886 md_assemble (char *str
)
895 dwarf2_emit_insn (4);
897 /* Put out the opcode. */
898 md_number_to_chars (toP
, the_insn
.opcode
, 4);
900 /* Put out the symbol-dependent stuff. */
901 if (the_insn
.reloc
!= NO_RELOC
)
903 fixP
= fix_new_exp (frag_now
,
904 (toP
- frag_now
->fr_literal
+ the_insn
.reloc_offset
),
905 the_insn
.size
, & the_insn
.exp
, the_insn
.pcrel
,
908 /* Turn off complaints that the addend is
909 too large for things like foo+100000@ha. */
910 switch (the_insn
.reloc
)
914 fixP
->fx_no_overflow
= 1;
920 switch (fixP
->fx_r_type
)
922 case RELOC_DLX_REL26
:
923 bitP
= XNEW (bit_fixS
);
924 bitP
->fx_bit_size
= 26;
925 bitP
->fx_bit_offset
= 25;
926 bitP
->fx_bit_base
= the_insn
.opcode
& 0xFC000000;
927 bitP
->fx_bit_base_adj
= 0;
928 bitP
->fx_bit_max
= 0;
929 bitP
->fx_bit_min
= 0;
930 bitP
->fx_bit_add
= 0x03FFFFFF;
931 fixP
->fx_bit_fixP
= bitP
;
934 case RELOC_DLX_REL16
:
935 bitP
= XNEW (bit_fixS
);
936 bitP
->fx_bit_size
= 16;
937 bitP
->fx_bit_offset
= 15;
938 bitP
->fx_bit_base
= the_insn
.opcode
& 0xFFFF0000;
939 bitP
->fx_bit_base_adj
= 0;
940 bitP
->fx_bit_max
= 0;
941 bitP
->fx_bit_min
= 0;
942 bitP
->fx_bit_add
= 0x0000FFFF;
943 fixP
->fx_bit_fixP
= bitP
;
946 bitP
= XNEW (bit_fixS
);
947 bitP
->fx_bit_size
= 16;
948 bitP
->fx_bit_offset
= 15;
949 bitP
->fx_bit_base
= the_insn
.opcode
& 0xFFFF0000;
950 bitP
->fx_bit_base_adj
= 0;
951 bitP
->fx_bit_max
= 0;
952 bitP
->fx_bit_min
= 0;
953 bitP
->fx_bit_add
= 0x0000FFFF;
954 fixP
->fx_bit_fixP
= bitP
;
957 fixP
->fx_bit_fixP
= NULL
;
963 /* This is identical to the md_atof in m68k.c. I think this is right,
964 but I'm not sure. Dlx will not use it anyway, so I just leave it
968 md_atof (int type
, char *litP
, int *sizeP
)
970 return ieee_md_atof (type
, litP
, sizeP
, TRUE
);
973 /* Write out big-endian. */
975 md_number_to_chars (char *buf
, valueT val
, int n
)
977 number_to_chars_bigendian (buf
, val
, n
);
981 md_dlx_fix_adjustable (fixS
*fixP
)
983 /* We need the symbol name for the VTABLE entries. */
984 return (fixP
->fx_r_type
!= BFD_RELOC_VTABLE_INHERIT
985 && fixP
->fx_r_type
!= BFD_RELOC_VTABLE_ENTRY
);
989 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg ATTRIBUTE_UNUSED
)
992 char *place
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
994 switch (fixP
->fx_r_type
)
997 case RELOC_DLX_REL16
:
998 if (fixP
->fx_bit_fixP
!= NULL
)
1000 val
= (val
& 0x0000FFFF) | fixP
->fx_bit_fixP
->fx_bit_base
;
1001 free (fixP
->fx_bit_fixP
);
1002 fixP
->fx_bit_fixP
= NULL
;
1006 case RELOC_DLX_HI16
:
1007 if (fixP
->fx_bit_fixP
!= NULL
)
1009 val
= (val
>> 16) | fixP
->fx_bit_fixP
->fx_bit_base
;
1010 free (fixP
->fx_bit_fixP
);
1011 fixP
->fx_bit_fixP
= NULL
;
1015 case RELOC_DLX_REL26
:
1016 if (fixP
->fx_bit_fixP
!= NULL
)
1018 val
= (val
& 0x03FFFFFF) | fixP
->fx_bit_fixP
->fx_bit_base
;
1019 free (fixP
->fx_bit_fixP
);
1020 fixP
->fx_bit_fixP
= NULL
;
1024 case BFD_RELOC_VTABLE_INHERIT
:
1025 /* This borrowed from tc-ppc.c on a whim. */
1028 && !S_IS_DEFINED (fixP
->fx_addsy
)
1029 && !S_IS_WEAK (fixP
->fx_addsy
))
1030 S_SET_WEAK (fixP
->fx_addsy
);
1033 case BFD_RELOC_VTABLE_ENTRY
:
1041 number_to_chars_bigendian (place
, val
, fixP
->fx_size
);
1042 if (fixP
->fx_addsy
== NULL
)
1044 if (fixP
->fx_bit_fixP
!= NULL
)
1045 fixP
->fx_no_overflow
= 1;
1048 const char *md_shortopts
= "";
1050 struct option md_longopts
[] =
1052 {NULL
, no_argument
, NULL
, 0}
1055 size_t md_longopts_size
= sizeof (md_longopts
);
1058 md_parse_option (int c ATTRIBUTE_UNUSED
,
1059 const char *arg ATTRIBUTE_UNUSED
)
1065 md_show_usage (FILE *stream ATTRIBUTE_UNUSED
)
1069 /* This is called when a line is unrecognized. */
1072 dlx_unrecognized_line (int c
)
1077 if (c
!= '$' || ! ISDIGIT ((unsigned char) input_line_pointer
[0]))
1080 s
= input_line_pointer
;
1083 while (ISDIGIT ((unsigned char) *s
))
1085 lab
= lab
* 10 + *s
- '0';
1090 /* Not a label definition. */
1093 if (dollar_label_defined (lab
))
1095 as_bad (_("label \"$%d\" redefined"), lab
);
1099 define_dollar_label (lab
);
1100 colon (dollar_label_name (lab
, 0));
1101 input_line_pointer
= s
+ 1;
1106 /* Default the values of symbols known that should be "predefined". We
1107 don't bother to predefine them unless you actually use one, since there
1108 are a lot of them. */
1111 md_undefined_symbol (char *name ATTRIBUTE_UNUSED
)
1116 /* Parse an operand that is machine-specific, the function was called
1117 in expr.c by operand() function, when everything failed before it
1121 md_operand (expressionS
* expressionP
)
1123 /* Check for the #number representation */
1124 if (input_line_pointer
[0] == '#' &&
1125 ISDIGIT ((unsigned char) input_line_pointer
[1]))
1127 /* We have a numeric number expression. No biggy. */
1128 input_line_pointer
+= 1; /* Skip # */
1130 (void) expression (expressionP
);
1132 if (expressionP
->X_op
!= O_constant
)
1133 as_bad (_("Invalid expression after # number\n"));
1139 /* Round up a section size to the appropriate boundary. */
1142 md_section_align (segT segment ATTRIBUTE_UNUSED
,
1145 /* Byte alignment is fine. */
1149 /* Exactly what point is a PC-relative offset relative TO?
1150 On the 29000, they're relative to the address of the instruction,
1151 which we have set up as the address of the fixup too. */
1154 md_pcrel_from (fixS
* fixP
)
1156 return 4 + fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
1159 /* Translate internal representation of relocation info to BFD target
1161 FIXME: To what extent can we get all relevant targets to use this?
1162 The above FIXME is from a29k, but I think it is also needed here. */
1165 tc_gen_reloc (asection
*section ATTRIBUTE_UNUSED
,
1170 reloc
= XNEW (arelent
);
1171 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixP
->fx_r_type
);
1173 if (reloc
->howto
== NULL
)
1175 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
1176 _("internal error: can't export reloc type %d (`%s')"),
1178 bfd_get_reloc_code_name (fixP
->fx_r_type
));
1182 gas_assert (!fixP
->fx_pcrel
== !reloc
->howto
->pc_relative
);
1184 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
1185 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixP
->fx_addsy
);
1186 reloc
->address
= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
1188 if (fixP
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
1189 reloc
->address
= fixP
->fx_offset
;
1196 dlx_pseudo_table
[] =
1198 /* Some additional ops that are used by gcc-dlx. */
1199 {"asciiz", stringer
, 8 + 1},
1203 {"proc", s_proc
, 0},
1204 {"endproc", s_proc
, 1},
1209 dlx_pop_insert (void)
1211 pop_insert (dlx_pseudo_table
);