1 /* tc-h8300.c -- Assemble code for the Hitachi H8/300
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* Written By Steve Chamberlain <sac@cygnus.com>. */
29 #define h8_opcodes ops
30 #include "opcode/h8300.h"
36 #define R_MOV24B1 BFD_RELOC_H8_DIR24A8
37 #define R_MOVL1 BFD_RELOC_H8_DIR32A16
38 #define R_MOV24B1 BFD_RELOC_H8_DIR24A8
39 #define R_MOVL1 BFD_RELOC_H8_DIR32A16
40 #define R_RELLONG BFD_RELOC_32
41 #define R_MOV16B1 BFD_RELOC_H8_DIR16A8
42 #define R_RELWORD BFD_RELOC_16
43 #define R_RELBYTE BFD_RELOC_8
44 #define R_PCRWORD BFD_RELOC_16_PCREL
45 #define R_PCRBYTE BFD_RELOC_8_PCREL
46 #define R_JMPL1 BFD_RELOC_H8_DIR24R8
49 const char comment_chars
[] = ";";
50 const char line_comment_chars
[] = "#";
51 const char line_separator_chars
[] = "";
53 /* This table describes all the machine specific pseudo-ops the assembler
54 has to support. The fields are:
55 pseudo-op name without dot
56 function to call to execute this pseudo-op
57 Integer arg to pass to the function
64 #define PSIZE (Hmode ? L_32 : L_16)
66 #define DSYMMODE (Hmode ? L_24 : L_16)
67 int bsize
= L_8
; /* default branch displacement */
75 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_h8300
, bfd_mach_h8300h
))
76 as_warn (_("could not set architecture and machine"));
86 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_h8300
, bfd_mach_h8300s
))
87 as_warn (_("could not set architecture and machine"));
101 cons (Hmode
? 4 : 2);
104 const pseudo_typeS md_pseudo_table
[] =
106 {"h8300h", h8300hmode
, 0},
107 {"h8300s", h8300smode
, 0},
108 {"sbranch", sbranch
, L_8
},
109 {"lbranch", sbranch
, L_16
},
115 {"form", listing_psize
, 0},
116 {"heading", listing_title
, 0},
117 {"import", s_ignore
, 0},
118 {"page", listing_eject
, 0},
119 {"program", s_ignore
, 0},
123 const int md_reloc_size
;
125 const char EXP_CHARS
[] = "eE";
127 /* Chars that mean this number is a floating point constant */
130 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
132 static struct hash_control
*opcode_hash_control
; /* Opcode mnemonics */
134 /* This function is called once, at assembler startup time. This
135 should set up all the tables, etc. that the MD part of the assembler
140 struct h8_opcode
*opcode
;
141 char prev_buffer
[100];
145 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_h8300
, bfd_mach_h8300
))
146 as_warn (_("could not set architecture and machine"));
149 opcode_hash_control
= hash_new ();
152 for (opcode
= h8_opcodes
; opcode
->name
; opcode
++)
154 /* Strip off any . part when inserting the opcode and only enter
155 unique codes into the hash table. */
156 char *src
= opcode
->name
;
157 unsigned int len
= strlen (src
);
158 char *dst
= malloc (len
+ 1);
173 if (strcmp (buffer
, prev_buffer
))
175 hash_insert (opcode_hash_control
, buffer
, (char *) opcode
);
176 strcpy (prev_buffer
, buffer
);
181 /* Find the number of operands. */
182 opcode
->noperands
= 0;
183 while (opcode
->args
.nib
[opcode
->noperands
] != E
)
186 /* Find the length of the opcode in bytes. */
188 while (opcode
->data
.nib
[opcode
->length
* 2] != E
)
203 int opsize
; /* Set when a register size is seen */
214 WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
223 /* Try to parse a reg name. Return the number of chars consumed. */
226 parse_reg (src
, mode
, reg
, direction
)
236 /* Cribbed from get_symbol_end. */
237 if (!is_name_beginner (*src
) || *src
== '\001')
240 while (is_part_of_name (*end
) || *end
== '\001')
244 if (len
== 2 && src
[0] == 's' && src
[1] == 'p')
246 *mode
= PSIZE
| REG
| direction
;
250 if (len
== 3 && src
[0] == 'c' && src
[1] == 'c' && src
[2] == 'r')
256 if (len
== 3 && src
[0] == 'e' && src
[1] == 'x' && src
[2] == 'r')
262 if (len
== 2 && src
[0] == 'f' && src
[1] == 'p')
264 *mode
= PSIZE
| REG
| direction
;
268 if (len
== 3 && src
[0] == 'e' && src
[1] == 'r'
269 && src
[2] >= '0' && src
[2] <= '7')
271 *mode
= L_32
| REG
| direction
;
274 as_warn (_("Reg not valid for H8/300"));
277 if (len
== 2 && src
[0] == 'e' && src
[1] >= '0' && src
[1] <= '7')
279 *mode
= L_16
| REG
| direction
;
280 *reg
= src
[1] - '0' + 8;
282 as_warn (_("Reg not valid for H8/300"));
288 if (src
[1] >= '0' && src
[1] <= '7')
290 if (len
== 3 && src
[2] == 'l')
292 *mode
= L_8
| REG
| direction
;
293 *reg
= (src
[1] - '0') + 8;
296 if (len
== 3 && src
[2] == 'h')
298 *mode
= L_8
| REG
| direction
;
299 *reg
= (src
[1] - '0');
304 *mode
= L_16
| REG
| direction
;
305 *reg
= (src
[1] - '0');
319 char *save
= input_line_pointer
;
322 input_line_pointer
= s
;
324 if (op
->X_op
== O_absent
)
325 as_bad (_("missing operand"));
326 new = input_line_pointer
;
327 input_line_pointer
= save
;
332 skip_colonthing (ptr
, exp
, mode
)
334 expressionS
*exp ATTRIBUTE_UNUSED
;
344 /* ff fill any 8 bit quantity */
345 /* exp->X_add_number -= 0x100; */
354 else if (*ptr
== '3')
358 else if (*ptr
== '1')
362 while (isdigit (*ptr
))
369 /* The many forms of operand:
372 @Rn Register indirect
373 @(exp[:16], Rn) Register indirect with displacement
377 @aa:16 absolute 16 bit
380 #xx[:size] immediate data
381 @(exp:[8], pc) pc rel
382 @@aa[:8] memory indirect
393 src
= skip_colonthing (src
, &op
->exp
, &mode
);
397 /* Choose a default mode. */
398 if (op
->exp
.X_add_number
< -32768
399 || op
->exp
.X_add_number
> 32767)
406 else if (op
->exp
.X_add_symbol
407 || op
->exp
.X_op_symbol
)
418 get_operand (ptr
, op
, dst
, direction
)
421 unsigned int dst ATTRIBUTE_UNUSED
;
431 /* Gross. Gross. ldm and stm have a format not easily handled
432 by get_operand. We deal with it explicitly here. */
433 if (src
[0] == 'e' && src
[1] == 'r' && isdigit (src
[2])
434 && src
[3] == '-' && src
[4] == 'e' && src
[5] == 'r' && isdigit (src
[6]))
442 as_bad (_("Invalid register list for ldm/stm\n"));
445 as_bad (_("Invalid register list for ldm/stm\n"));
448 as_bad (_("Invalid register list for ldm/stm\n"));
452 as_bad (_("Invalid register list for ldm/stm\n"));
454 /* Even sicker. We encode two registers into op->reg. One
455 for the low register to save, the other for the high
456 register to save; we also set the high bit in op->reg
457 so we know this is "very special". */
458 op
->reg
= 0x80000000 | (high
<< 8) | low
;
464 len
= parse_reg (src
, &op
->mode
, &op
->reg
, direction
);
477 src
= parse_exp (src
, &op
->exp
);
479 src
= skip_colonthing (src
, &op
->exp
, &op
->mode
);
490 len
= parse_reg (src
, &mode
, &num
, direction
);
493 /* Oops, not a reg after all, must be ordinary exp. */
495 /* Must be a symbol. */
496 op
->mode
= ABS
| PSIZE
| direction
;
497 *ptr
= skip_colonthing (parse_exp (src
, &op
->exp
),
498 &op
->exp
, &op
->mode
);
503 if ((mode
& SIZE
) != PSIZE
)
504 as_bad (_("Wrong size pointer register for architecture."));
515 /* Start off assuming a 16 bit offset. */
517 src
= parse_exp (src
, &op
->exp
);
519 src
= colonmod24 (op
, src
);
524 op
->mode
|= ABS
| direction
;
531 as_bad (_("expected @(exp, reg16)"));
537 len
= parse_reg (src
, &mode
, &op
->reg
, direction
);
538 if (len
== 0 || !(mode
& REG
))
540 as_bad (_("expected @(exp, reg16)"));
543 op
->mode
|= DISP
| direction
;
546 src
= skip_colonthing (src
, &op
->exp
, &op
->mode
);
548 if (*src
!= ')' && '(')
550 as_bad (_("expected @(exp, reg16)"));
557 len
= parse_reg (src
, &mode
, &num
, direction
);
565 if ((mode
& SIZE
) != PSIZE
)
566 as_bad (_("Wrong size pointer register for architecture."));
572 if ((mode
& SIZE
) != PSIZE
)
573 as_bad (_("Wrong size pointer register for architecture."));
575 op
->mode
= direction
| IND
| PSIZE
;
583 /* must be a symbol */
585 op
->mode
= ABS
| direction
;
586 src
= parse_exp (src
, &op
->exp
);
588 *ptr
= colonmod24 (op
, src
);
598 src
= parse_exp (src
, &op
->exp
);
599 *ptr
= skip_colonthing (src
, &op
->exp
, &op
->mode
);
603 else if (strncmp (src
, "mach", 4) == 0
604 || strncmp (src
, "macl", 4) == 0)
606 op
->reg
= src
[3] == 'l';
613 src
= parse_exp (src
, &op
->exp
);
614 /* Trailing ':' size ? */
617 if (src
[1] == '1' && src
[2] == '6')
619 op
->mode
= PCREL
| L_16
;
622 else if (src
[1] == '8')
624 op
->mode
= PCREL
| L_8
;
629 as_bad (_("expect :8 or :16 here"));
634 op
->mode
= PCREL
| bsize
;
641 get_operands (noperands
, op_end
, operand
)
642 unsigned int noperands
;
644 struct h8_op
*operand
;
657 get_operand (&ptr
, operand
+ 0, 0, SRC
);
661 get_operand (&ptr
, operand
+ 1, 1, DST
);
671 get_operand (&ptr
, operand
+ 0, 0, SRC
);
674 get_operand (&ptr
, operand
+ 1, 1, DST
);
684 /* Passed a pointer to a list of opcodes which use different
685 addressing modes, return the opcode which matches the opcodes
687 static struct h8_opcode
*
688 get_specific (opcode
, operands
, size
)
689 struct h8_opcode
*opcode
;
690 struct h8_op
*operands
;
693 struct h8_opcode
*this_try
= opcode
;
696 unsigned int this_index
= opcode
->idx
;
698 /* There's only one ldm/stm and it's easier to just
699 get out quick for them. */
700 if (strcmp (opcode
->name
, "stm.l") == 0
701 || strcmp (opcode
->name
, "ldm.l") == 0)
704 while (this_index
== opcode
->idx
&& !found
)
709 if (this_try
->noperands
== 0)
713 this_size
= this_try
->how
& SN
;
714 if (this_size
!= size
&& (this_size
!= SB
|| size
!= SN
))
721 for (i
= 0; i
< this_try
->noperands
&& found
; i
++)
723 op_type op
= this_try
->args
.nib
[i
];
724 int x
= operands
[i
].mode
;
726 if ((op
& (DISP
| REG
)) == (DISP
| REG
)
727 && ((x
& (DISP
| REG
)) == (DISP
| REG
)))
729 dispreg
= operands
[i
].reg
;
737 x
= (x
& ~L_P
) | (Hmode
? L_32
: L_16
);
739 op
= (op
& ~L_P
) | (Hmode
? L_32
: L_16
);
743 /* The size of the reg is v important. */
744 if ((op
& SIZE
) != (x
& SIZE
))
747 else if ((op
& ABSJMP
) && (x
& ABS
))
749 operands
[i
].mode
&= ~ABS
;
750 operands
[i
].mode
|= ABSJMP
;
751 /* But it may not be 24 bits long. */
754 operands
[i
].mode
&= ~SIZE
;
755 operands
[i
].mode
|= L_16
;
758 else if ((op
& (KBIT
| DBIT
)) && (x
& IMM
))
760 /* This is ok if the immediate value is sensible. */
764 /* The size of the displacement is important. */
765 if ((op
& SIZE
) != (x
& SIZE
))
768 else if ((op
& (DISP
| IMM
| ABS
))
769 && (op
& (DISP
| IMM
| ABS
)) == (x
& (DISP
| IMM
| ABS
)))
771 /* Promote a L_24 to L_32 if it makes us match. */
772 if ((x
& L_24
) && (op
& L_32
))
777 /* Promote an L8 to L_16 if it makes us match. */
778 if (op
& ABS
&& op
& L_8
&& op
& DISP
)
783 else if ((x
& SIZE
) != 0
784 && ((op
& SIZE
) != (x
& SIZE
)))
787 else if ((op
& MACREG
) != (x
& MACREG
))
791 else if ((op
& MODE
) != (x
& MODE
))
805 check_operand (operand
, width
, string
)
806 struct h8_op
*operand
;
810 if (operand
->exp
.X_add_symbol
== 0
811 && operand
->exp
.X_op_symbol
== 0)
813 /* No symbol involved, let's look at offset, it's dangerous if
814 any of the high bits are not 0 or ff's, find out by oring or
815 anding with the width and seeing if the answer is 0 or all
818 if ((operand
->exp
.X_add_number
& ~width
) != 0 &&
819 (operand
->exp
.X_add_number
| width
) != (~0))
822 && (operand
->exp
.X_add_number
& 0xff00) == 0xff00)
824 /* Just ignore this one - which happens when trying to
825 fit a 16 bit address truncated into an 8 bit address
826 of something like bset. */
830 as_warn (_("operand %s0x%lx out of range."), string
,
831 (unsigned long) operand
->exp
.X_add_number
);
837 /* RELAXMODE has one of 3 values:
839 0 Output a "normal" reloc, no relaxing possible for this insn/reloc
841 1 Output a relaxable 24bit absolute mov.w address relocation
842 (may relax into a 16bit absolute address).
844 2 Output a relaxable 16/24 absolute mov.b address relocation
845 (may relax into an 8bit absolute address). */
848 do_a_fix_imm (offset
, operand
, relaxmode
)
850 struct h8_op
*operand
;
857 char *t
= operand
->mode
& IMM
? "#" : "@";
859 if (operand
->exp
.X_add_symbol
== 0)
861 char *bytes
= frag_now
->fr_literal
+ offset
;
862 switch (operand
->mode
& SIZE
)
865 check_operand (operand
, 0x3, t
);
866 bytes
[0] |= (operand
->exp
.X_add_number
) << 4;
869 check_operand (operand
, 0x7, t
);
870 bytes
[0] |= (operand
->exp
.X_add_number
) << 4;
873 check_operand (operand
, 0xff, t
);
874 bytes
[0] = operand
->exp
.X_add_number
;
877 check_operand (operand
, 0xffff, t
);
878 bytes
[0] = operand
->exp
.X_add_number
>> 8;
879 bytes
[1] = operand
->exp
.X_add_number
>> 0;
882 check_operand (operand
, 0xffffff, t
);
883 bytes
[0] = operand
->exp
.X_add_number
>> 16;
884 bytes
[1] = operand
->exp
.X_add_number
>> 8;
885 bytes
[2] = operand
->exp
.X_add_number
>> 0;
889 /* This should be done with bfd. */
890 bytes
[0] = operand
->exp
.X_add_number
>> 24;
891 bytes
[1] = operand
->exp
.X_add_number
>> 16;
892 bytes
[2] = operand
->exp
.X_add_number
>> 8;
893 bytes
[3] = operand
->exp
.X_add_number
>> 0;
896 idx
= (relaxmode
== 2) ? R_MOV24B1
: R_MOVL1
;
897 fix_new_exp (frag_now
, offset
, 4, &operand
->exp
, 0, idx
);
904 switch (operand
->mode
& SIZE
)
909 where
= (operand
->mode
& SIZE
) == L_24
? -1 : 0;
912 else if (relaxmode
== 1)
918 as_bad (_("Can't work out size of operand.\n"));
926 operand
->exp
.X_add_number
=
927 ((operand
->exp
.X_add_number
& 0xffff) ^ 0x8000) - 0x8000;
933 operand
->exp
.X_add_number
=
934 ((operand
->exp
.X_add_number
& 0xff) ^ 0x80) - 0x80;
937 fix_new_exp (frag_now
,
946 /* Now we know what sort of opcodes it is, let's build the bytes. */
948 build_bytes (this_try
, operand
)
949 struct h8_opcode
*this_try
;
950 struct h8_op
*operand
;
954 char *output
= frag_more (this_try
->length
);
955 op_type
*nibble_ptr
= this_try
->data
.nib
;
957 unsigned int nibble_count
= 0;
965 if (!(this_try
->inbase
|| Hmode
))
966 as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"),
969 while (*nibble_ptr
!= E
)
974 d
= (c
& (DST
| SRC_IN_DST
)) != 0;
982 if (c
& (REG
| IND
| INC
| DEC
))
984 nib
= operand
[d
].reg
;
986 else if ((c
& DISPREG
) == (DISPREG
))
993 absat
= nibble_count
/ 2;
996 else if (c
& (IMM
| PCREL
| ABS
| ABSJMP
| DISP
))
999 immat
= nibble_count
/ 2;
1002 else if (c
& IGNORE
)
1008 switch (operand
[0].exp
.X_add_number
)
1017 as_bad (_("Need #1 or #2 here"));
1022 switch (operand
[0].exp
.X_add_number
)
1032 as_warn (_("#4 not valid on H8/300."));
1037 as_bad (_("Need #1 or #2 here"));
1040 /* Stop it making a fix. */
1041 operand
[0].mode
= 0;
1046 operand
[d
].mode
|= MEMRELAX
;
1056 if (operand
[0].mode
== MACREG
)
1057 /* stmac has mac[hl] as the first operand. */
1058 nib
= 2 + operand
[0].reg
;
1060 /* ldmac has mac[hl] as the second operand. */
1061 nib
= 2 + operand
[1].reg
;
1069 /* Disgusting. Why, oh why didn't someone ask us for advice
1070 on the assembler format. */
1071 if (strcmp (this_try
->name
, "stm.l") == 0
1072 || strcmp (this_try
->name
, "ldm.l") == 0)
1075 high
= (operand
[this_try
->name
[0] == 'l' ? 1 : 0].reg
>> 8) & 0xf;
1076 low
= operand
[this_try
->name
[0] == 'l' ? 1 : 0].reg
& 0xf;
1078 asnibbles
[2] = high
- low
;
1079 asnibbles
[7] = (this_try
->name
[0] == 'l') ? high
: low
;
1082 for (i
= 0; i
< this_try
->length
; i
++)
1084 output
[i
] = (asnibbles
[i
* 2] << 4) | asnibbles
[i
* 2 + 1];
1087 /* Note if this is a movb instruction -- there's a special relaxation
1088 which only applies to them. */
1089 if (strcmp (this_try
->name
, "mov.b") == 0)
1092 /* Output any fixes. */
1093 for (i
= 0; i
< 2; i
++)
1095 int x
= operand
[i
].mode
;
1097 if (x
& (IMM
| DISP
))
1099 do_a_fix_imm (output
- frag_now
->fr_literal
+ immat
,
1100 operand
+ i
, x
& MEMRELAX
!= 0);
1104 do_a_fix_imm (output
- frag_now
->fr_literal
+ absat
,
1105 operand
+ i
, x
& MEMRELAX
? movb
+ 1 : 0);
1109 int size16
= x
& L_16
;
1110 int where
= size16
? 2 : 1;
1111 int size
= size16
? 2 : 1;
1112 int type
= size16
? R_PCRWORD
: R_PCRBYTE
;
1114 check_operand (operand
+ i
, size16
? 0x7fff : 0x7f, "@");
1116 if (operand
[i
].exp
.X_add_number
& 1)
1118 as_warn (_("branch operand has odd offset (%lx)\n"),
1119 (unsigned long) operand
->exp
.X_add_number
);
1122 operand
[i
].exp
.X_add_number
-= 1;
1123 operand
[i
].exp
.X_add_number
=
1124 ((operand
[i
].exp
.X_add_number
& 0xff) ^ 0x80) - 0x80;
1126 fix_new_exp (frag_now
,
1127 output
- frag_now
->fr_literal
+ where
,
1133 else if (x
& MEMIND
)
1135 check_operand (operand
+ i
, 0xff, "@@");
1136 fix_new_exp (frag_now
,
1137 output
- frag_now
->fr_literal
+ 1,
1143 else if (x
& ABSJMP
)
1145 /* This jmp may be a jump or a branch. */
1147 check_operand (operand
+ i
, Hmode
? 0xffffff : 0xffff, "@");
1148 if (operand
[i
].exp
.X_add_number
& 1)
1150 as_warn (_("branch operand has odd offset (%lx)\n"),
1151 (unsigned long) operand
->exp
.X_add_number
);
1154 operand
[i
].exp
.X_add_number
=
1155 ((operand
[i
].exp
.X_add_number
& 0xffff) ^ 0x8000) - 0x8000;
1156 fix_new_exp (frag_now
,
1157 output
- frag_now
->fr_literal
,
1166 /* Try to give an intelligent error message for common and simple to
1169 clever_message (opcode
, operand
)
1170 struct h8_opcode
*opcode
;
1171 struct h8_op
*operand
;
1173 /* Find out if there was more than one possible opcode. */
1175 if ((opcode
+ 1)->idx
!= opcode
->idx
)
1179 /* Only one opcode of this flavour, try to guess which operand
1181 for (argn
= 0; argn
< opcode
->noperands
; argn
++)
1183 switch (opcode
->args
.nib
[argn
])
1186 if (operand
[argn
].mode
!= RD16
)
1188 as_bad (_("destination operand must be 16 bit register"));
1195 if (operand
[argn
].mode
!= RS8
)
1197 as_bad (_("source operand must be 8 bit register"));
1203 if (operand
[argn
].mode
!= ABS16DST
)
1205 as_bad (_("destination operand must be 16bit absolute address"));
1210 if (operand
[argn
].mode
!= RD8
)
1212 as_bad (_("destination operand must be 8 bit register"));
1218 if (operand
[argn
].mode
!= ABS16SRC
)
1220 as_bad (_("source operand must be 16bit absolute address"));
1228 as_bad (_("invalid operands"));
1231 /* This is the guts of the machine-dependent assembler. STR points to
1232 a machine dependent instruction. This function is supposed to emit
1233 the frags/bytes it assembles. */
1240 struct h8_op operand
[2];
1241 struct h8_opcode
*opcode
;
1242 struct h8_opcode
*prev_opcode
;
1248 /* Drop leading whitespace. */
1252 /* Find the op code end. */
1253 for (op_start
= op_end
= str
;
1254 *op_end
!= 0 && *op_end
!= ' ';
1266 if (op_end
== op_start
)
1268 as_bad (_("can't find opcode "));
1274 opcode
= (struct h8_opcode
*) hash_find (opcode_hash_control
,
1279 as_bad (_("unknown opcode"));
1283 /* We used to set input_line_pointer to the result of get_operands,
1284 but that is wrong. Our caller assumes we don't change it. */
1286 (void) get_operands (opcode
->noperands
, op_end
, operand
);
1288 prev_opcode
= opcode
;
1308 opcode
= get_specific (opcode
, operand
, size
);
1312 /* Couldn't find an opcode which matched the operands. */
1313 char *where
= frag_more (2);
1317 clever_message (prev_opcode
, operand
);
1321 if (opcode
->size
&& dot
)
1323 if (opcode
->size
!= *dot
)
1325 as_warn (_("mismatch between opcode size and operand size"));
1329 build_bytes (opcode
, operand
);
1334 tc_crawl_symbol_chain (headers
)
1335 object_headers
*headers ATTRIBUTE_UNUSED
;
1337 printf (_("call to tc_crawl_symbol_chain \n"));
1342 md_undefined_symbol (name
)
1343 char *name ATTRIBUTE_UNUSED
;
1350 tc_headers_hook (headers
)
1351 object_headers
*headers ATTRIBUTE_UNUSED
;
1353 printf (_("call to tc_headers_hook \n"));
1357 /* Various routines to kill one day */
1358 /* Equal to MAX_PRECISION in atof-ieee.c */
1359 #define MAX_LITTLENUMS 6
1361 /* Turn a string in input_line_pointer into a floating point constant
1362 of type TYPE, and store the appropriate bytes in *LITP. The number
1363 of LITTLENUMS emitted is stored in *SIZEP. An error message is
1364 returned, or NULL on OK. */
1367 md_atof (type
, litP
, sizeP
)
1373 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
1374 LITTLENUM_TYPE
*wordP
;
1406 return _("Bad call to MD_ATOF()");
1408 t
= atof_ieee (input_line_pointer
, type
, words
);
1410 input_line_pointer
= t
;
1412 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
1413 for (wordP
= words
; prec
--;)
1415 md_number_to_chars (litP
, (long) (*wordP
++), sizeof (LITTLENUM_TYPE
));
1416 litP
+= sizeof (LITTLENUM_TYPE
);
1421 CONST
char *md_shortopts
= "";
1422 struct option md_longopts
[] = {
1423 {NULL
, no_argument
, NULL
, 0}
1426 size_t md_longopts_size
= sizeof (md_longopts
);
1429 md_parse_option (c
, arg
)
1430 int c ATTRIBUTE_UNUSED
;
1431 char *arg ATTRIBUTE_UNUSED
;
1437 md_show_usage (stream
)
1438 FILE *stream ATTRIBUTE_UNUSED
;
1443 tc_aout_fix_to_chars ()
1445 printf (_("call to tc_aout_fix_to_chars \n"));
1450 md_convert_frag (headers
, seg
, fragP
)
1451 object_headers
*headers ATTRIBUTE_UNUSED
;
1452 segT seg ATTRIBUTE_UNUSED
;
1453 fragS
*fragP ATTRIBUTE_UNUSED
;
1455 printf (_("call to md_convert_frag \n"));
1460 md_section_align (seg
, size
)
1464 return ((size
+ (1 << section_alignment
[(int) seg
]) - 1)
1465 & (-1 << section_alignment
[(int) seg
]));
1469 md_apply_fix (fixP
, val
)
1473 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
1475 switch (fixP
->fx_size
)
1481 *buf
++ = (val
>> 8);
1485 *buf
++ = (val
>> 24);
1486 *buf
++ = (val
>> 16);
1487 *buf
++ = (val
>> 8);
1496 md_estimate_size_before_relax (fragP
, segment_type
)
1497 register fragS
*fragP ATTRIBUTE_UNUSED
;
1498 register segT segment_type ATTRIBUTE_UNUSED
;
1500 printf (_("call tomd_estimate_size_before_relax \n"));
1504 /* Put number into target byte order. */
1506 md_number_to_chars (ptr
, use
, nbytes
)
1511 number_to_chars_bigendian (ptr
, use
, nbytes
);
1515 md_pcrel_from (fixP
)
1516 fixS
*fixP ATTRIBUTE_UNUSED
;
1522 tc_reloc_mangle (fix_ptr
, intr
, base
)
1524 struct internal_reloc
*intr
;
1528 symbolS
*symbol_ptr
;
1530 symbol_ptr
= fix_ptr
->fx_addsy
;
1532 /* If this relocation is attached to a symbol then it's ok
1534 if (fix_ptr
->fx_r_type
== TC_CONS_RELOC
)
1536 /* cons likes to create reloc32's whatever the size of the reloc..
1538 switch (fix_ptr
->fx_size
)
1541 intr
->r_type
= R_RELLONG
;
1544 intr
->r_type
= R_RELWORD
;
1547 intr
->r_type
= R_RELBYTE
;
1555 intr
->r_type
= fix_ptr
->fx_r_type
;
1558 intr
->r_vaddr
= fix_ptr
->fx_frag
->fr_address
+ fix_ptr
->fx_where
+ base
;
1559 intr
->r_offset
= fix_ptr
->fx_offset
;
1563 if (symbol_ptr
->sy_number
!= -1)
1564 intr
->r_symndx
= symbol_ptr
->sy_number
;
1569 /* This case arises when a reference is made to `.'. */
1570 segsym
= seg_info (S_GET_SEGMENT (symbol_ptr
))->dot
;
1572 intr
->r_symndx
= -1;
1575 intr
->r_symndx
= segsym
->sy_number
;
1576 intr
->r_offset
+= S_GET_VALUE (symbol_ptr
);
1581 intr
->r_symndx
= -1;
1585 tc_gen_reloc (section
, fixp
)
1586 asection
*section ATTRIBUTE_UNUSED
;
1590 bfd_reloc_code_real_type r_type
;
1592 rel
= (arelent
*) xmalloc (sizeof (arelent
));
1593 rel
->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
1594 *rel
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
1595 rel
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1596 rel
->addend
= fixp
->fx_offset
;
1598 r_type
= fixp
->fx_r_type
;
1602 fprintf (stderr
, "%s\n", bfd_get_reloc_code_name (r_type
));
1605 rel
->howto
= bfd_reloc_type_lookup (stdoutput
, r_type
);
1606 if (rel
->howto
== NULL
)
1608 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1609 _("Cannot represent relocation type %s"),
1610 bfd_get_reloc_code_name (r_type
));