1 /* tc-z8k.c -- Assemble code for the Zilog Z800n
2 Copyright 1992, 1993, 1994, 1995, 1996, 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>. */
27 #include "opcodes/z8k-opc.h"
31 #include "safe-ctype.h"
33 const char comment_chars
[] = "!";
34 const char line_comment_chars
[] = "#";
35 const char line_separator_chars
[] = ";";
38 extern int coff_flags
;
40 const int md_reloc_size
;
48 machine
= bfd_mach_z8001
;
56 machine
= bfd_mach_z8002
;
64 record_alignment (now_seg
, 1);
67 void obj_coff_section ();
84 if (*input_line_pointer
== '\'')
88 c
= *input_line_pointer
++;
93 c
= (tohex (input_line_pointer
[0]) << 4)
94 | tohex (input_line_pointer
[1]);
95 input_line_pointer
+= 2;
97 FRAG_APPEND_1_CHAR (c
);
98 c
= *input_line_pointer
++;
100 demand_empty_rest_of_line ();
104 /* This table describes all the machine specific pseudo-ops the assembler
105 has to support. The fields are:
106 pseudo-op name without dot
107 function to call to execute this pseudo-op
108 Integer arg to pass to the function
111 const pseudo_typeS md_pseudo_table
[] = {
113 {"data.b" , cons
, 1},
114 {"data.w" , cons
, 2},
115 {"data.l" , cons
, 4},
116 {"form" , listing_psize
, 0},
117 {"heading", listing_title
, 0},
118 {"import" , s_ignore
, 0},
119 {"page" , listing_eject
, 0},
120 {"program", s_ignore
, 0},
121 {"z8001" , s_segm
, 0},
122 {"z8002" , s_unseg
, 0},
124 {"segm" , s_segm
, 0},
125 {"unsegm" , s_unseg
, 0},
126 {"unseg" , s_unseg
, 0},
127 {"name" , s_app_file
, 0},
128 {"global" , s_globl
, 0},
133 {"rsect" , obj_coff_section
, 0},
134 {"sect" , obj_coff_section
, 0},
135 {"block" , s_space
, 0},
140 const char EXP_CHARS
[] = "eE";
142 /* Chars that mean this number is a floating point constant.
145 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
147 /* Opcode mnemonics. */
148 static struct hash_control
*opcode_hash_control
;
153 opcode_entry_type
*opcode
;
154 char *prev_name
= "";
157 opcode_hash_control
= hash_new ();
159 for (opcode
= z8k_table
; opcode
->name
; opcode
++)
161 /* Only enter unique codes into the table. */
162 if (strcmp (opcode
->name
, prev_name
))
164 hash_insert (opcode_hash_control
, opcode
->name
, (char *) opcode
);
168 prev_name
= opcode
->name
;
171 /* Default to z8002. */
174 /* Insert the pseudo ops, too. */
175 for (idx
= 0; md_pseudo_table
[idx
].poc_name
; idx
++)
177 opcode_entry_type
*fake_opcode
;
178 fake_opcode
= (opcode_entry_type
*) malloc (sizeof (opcode_entry_type
));
179 fake_opcode
->name
= md_pseudo_table
[idx
].poc_name
;
180 fake_opcode
->func
= (void *) (md_pseudo_table
+ idx
);
181 fake_opcode
->opcode
= 250;
182 hash_insert (opcode_hash_control
, fake_opcode
->name
, fake_opcode
);
194 typedef struct z8k_op
{
195 /* 'b','w','r','q'. */
203 /* Any other register associated with the mode. */
206 /* Any expression. */
210 static expressionS
*da_operand
;
211 static expressionS
*imm_operand
;
224 if (ISDIGIT (src
[1]))
226 *reg
= (src
[0] - '0') * 10 + src
[1] - '0';
231 *reg
= (src
[0] - '0');
242 WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
250 /* Try to parse a reg name. Return a pointer to the first character
251 in SRC after the reg name. */
254 parse_reg (src
, mode
, reg
)
262 if (src
[0] == 's' && src
[1] == 'p' && (src
[2] == 0 || src
[2] == ','))
266 *mode
= CLASS_REG_LONG
;
271 *mode
= CLASS_REG_WORD
;
280 if (src
[2] < '0' || src
[2] > '9')
281 return res
; /* Assume no register name but a label starting with 'rr'. */
282 *mode
= CLASS_REG_LONG
;
283 res
= whatreg (reg
, src
+ 2);
286 as_warn (_("register rr%d, out of range."), regno
);
288 else if (src
[1] == 'h')
290 if (src
[2] < '0' || src
[2] > '9')
291 return res
; /* Assume no register name but a label starting with 'rh'. */
292 *mode
= CLASS_REG_BYTE
;
293 res
= whatreg (reg
, src
+ 2);
296 as_warn (_("register rh%d, out of range."), regno
);
298 else if (src
[1] == 'l')
300 if (src
[2] < '0' || src
[2] > '9')
301 return res
; /* Assume no register name but a label starting with 'rl'. */
302 *mode
= CLASS_REG_BYTE
;
303 res
= whatreg (reg
, src
+ 2);
306 as_warn (_("register rl%d, out of range."), regno
);
309 else if (src
[1] == 'q')
311 if (src
[2] < '0' || src
[2] > '9')
312 return res
; /* Assume no register name but a label starting with 'rq'. */
313 *mode
= CLASS_REG_QUAD
;
314 res
= whatreg (reg
, src
+ 2);
317 as_warn (_("register rq%d, out of range."), regno
);
321 if (src
[1] < '0' || src
[1] > '9')
322 return res
; /* Assume no register name but a label starting with 'r'. */
323 *mode
= CLASS_REG_WORD
;
324 res
= whatreg (reg
, src
+ 1);
327 as_warn (_("register r%d, out of range."), regno
);
338 char *save
= input_line_pointer
;
341 input_line_pointer
= s
;
343 if (op
->X_op
== O_absent
)
344 as_bad (_("missing operand"));
345 new = input_line_pointer
;
346 input_line_pointer
= save
;
350 /* The many forms of operand:
372 as_bad (_("expected %c"), what
);
377 /* Make sure the mode supplied is the size of a word. */
380 regword (mode
, string
)
389 as_bad (_("register is wrong size for a word %s"), string
);
393 /* Make sure the mode supplied is the size of an address. */
396 regaddr (mode
, string
)
402 ok
= segmented_mode
? CLASS_REG_LONG
: CLASS_REG_WORD
;
405 as_bad (_("register is wrong size for address %s"), string
);
414 struct ctrl_names ctrl_table
[] = {
427 get_ctrl_operand (ptr
, mode
, dst
)
430 unsigned int dst ATTRIBUTE_UNUSED
;
438 mode
->mode
= CLASS_CTRL
;
439 for (i
= 0; ctrl_table
[i
].name
; i
++)
443 for (j
= 0; ctrl_table
[i
].name
[j
]; j
++)
445 if (ctrl_table
[i
].name
[j
] != src
[j
])
448 the_ctrl
= ctrl_table
[i
].value
;
464 struct flag_names flag_table
[] = {
475 get_flags_operand (ptr
, mode
, dst
)
478 unsigned int dst ATTRIBUTE_UNUSED
;
487 mode
->mode
= CLASS_FLAGS
;
489 for (j
= 0; j
<= 9; j
++)
493 for (i
= 0; flag_table
[i
].name
; i
++)
495 if (flag_table
[i
].name
[0] == src
[j
])
497 the_flags
= the_flags
| flag_table
[i
].value
;
510 struct interrupt_names
{
516 struct interrupt_names intr_table
[] = {
525 get_interrupt_operand (ptr
, mode
, dst
)
528 unsigned int dst ATTRIBUTE_UNUSED
;
536 mode
->mode
= CLASS_IMM
;
537 for (i
= 0; intr_table
[i
].name
; i
++)
541 for (j
= 0; intr_table
[i
].name
[j
]; j
++)
543 if (intr_table
[i
].name
[j
] != src
[j
])
546 the_interrupt
= intr_table
[i
].value
;
562 struct cc_names table
[] = {
589 get_cc_operand (ptr
, mode
, dst
)
592 unsigned int dst ATTRIBUTE_UNUSED
;
600 mode
->mode
= CLASS_CC
;
601 for (i
= 0; table
[i
].name
; i
++)
605 for (j
= 0; table
[i
].name
[j
]; j
++)
607 if (table
[i
].name
[j
] != src
[j
])
610 the_cc
= table
[i
].value
;
620 get_operand (ptr
, mode
, dst
)
623 unsigned int dst ATTRIBUTE_UNUSED
;
634 mode
->mode
= CLASS_IMM
;
635 imm_operand
= &(mode
->exp
);
636 src
= parse_exp (src
+ 1, &(mode
->exp
));
638 else if (*src
== '@')
642 mode
->mode
= CLASS_IR
;
643 src
= parse_reg (src
+ 1, &d
, &mode
->reg
);
649 end
= parse_reg (src
, &mode
->mode
, ®n
);
659 end
= parse_reg (src
, &nw
, &nr
);
666 as_bad (_("Missing ) in ra(rb)"));
670 regaddr (mode
->mode
, "ra(rb) ra");
672 regword (mode
->mode
, "ra(rb) rb");
674 mode
->mode
= CLASS_BX
;
684 src
= parse_exp (src
, &(mode
->exp
));
685 src
= checkfor (src
, ')');
686 mode
->mode
= CLASS_BA
;
689 imm_operand
= &(mode
->exp
);
700 /* No initial reg. */
701 src
= parse_exp (src
, &(mode
->exp
));
705 end
= parse_reg (src
, &(mode
->mode
), ®n
);
706 regword (mode
->mode
, "addr(Ra) ra");
707 mode
->mode
= CLASS_X
;
710 da_operand
= &(mode
->exp
);
711 src
= checkfor (end
, ')');
715 /* Just an address. */
716 mode
->mode
= CLASS_DA
;
719 da_operand
= &(mode
->exp
);
727 get_operands (opcode
, op_end
, operand
)
728 opcode_entry_type
*opcode
;
735 switch (opcode
->noperands
)
744 if (opcode
->arg_info
[0] == CLASS_CC
)
746 get_cc_operand (&ptr
, operand
+ 0, 0);
748 else if (opcode
->arg_info
[0] == CLASS_FLAGS
)
750 get_flags_operand (&ptr
, operand
+ 0, 0);
752 else if (opcode
->arg_info
[0] == (CLASS_IMM
+ (ARG_IMM2
)))
754 get_interrupt_operand (&ptr
, operand
+ 0, 0);
758 get_operand (&ptr
, operand
+ 0, 0);
766 if (opcode
->arg_info
[0] == CLASS_CC
)
768 get_cc_operand (&ptr
, operand
+ 0, 0);
770 else if (opcode
->arg_info
[0] == CLASS_CTRL
)
772 get_ctrl_operand (&ptr
, operand
+ 0, 0);
776 get_operand (&ptr
, operand
+ 0, 0);
781 get_ctrl_operand (&ptr
, operand
+ 1, 1);
787 get_operand (&ptr
, operand
+ 0, 0);
793 get_operand (&ptr
, operand
+ 1, 1);
798 get_operand (&ptr
, operand
+ 0, 0);
801 get_operand (&ptr
, operand
+ 1, 1);
804 get_operand (&ptr
, operand
+ 2, 2);
809 get_operand (&ptr
, operand
+ 0, 0);
812 get_operand (&ptr
, operand
+ 1, 1);
815 get_operand (&ptr
, operand
+ 2, 2);
818 get_cc_operand (&ptr
, operand
+ 3, 3);
828 /* Passed a pointer to a list of opcodes which use different
829 addressing modes. Return the opcode which matches the opcodes
832 static opcode_entry_type
*
833 get_specific (opcode
, operands
)
834 opcode_entry_type
*opcode
;
838 opcode_entry_type
*this_try
= opcode
;
840 unsigned int noperands
= opcode
->noperands
;
842 int this_index
= opcode
->idx
;
844 while (this_index
== opcode
->idx
&& !found
)
849 for (i
= 0; i
< noperands
; i
++)
851 unsigned int mode
= operands
[i
].mode
;
853 if ((mode
& CLASS_MASK
) != (this_try
->arg_info
[i
] & CLASS_MASK
))
855 /* It could be an pc rel operand, if this is a da mode
856 and we like disps, then insert it. */
858 if (mode
== CLASS_DA
&& this_try
->arg_info
[i
] == CLASS_DISP
)
860 /* This is the case. */
861 operands
[i
].mode
= CLASS_DISP
;
863 else if (mode
== CLASS_BA
&& this_try
->arg_info
[i
])
865 /* Can't think of a way to turn what we've been
866 given into something that's OK. */
869 else if (this_try
->arg_info
[i
] & CLASS_PR
)
871 if (mode
== CLASS_REG_LONG
&& segmented_mode
)
875 else if (mode
== CLASS_REG_WORD
&& !segmented_mode
)
885 switch (mode
& CLASS_MASK
)
900 reg
[this_try
->arg_info
[i
] & ARG_MASK
] = operands
[i
].reg
;
915 #if 0 /* Not used. */
917 check_operand (operand
, width
, string
)
918 struct z8k_op
*operand
;
922 if (operand
->exp
.X_add_symbol
== 0
923 && operand
->exp
.X_op_symbol
== 0)
926 /* No symbol involved, let's look at offset, it's dangerous if
927 any of the high bits are not 0 or ff's, find out by oring or
928 anding with the width and seeing if the answer is 0 or all
930 if ((operand
->exp
.X_add_number
& ~width
) != 0 &&
931 (operand
->exp
.X_add_number
| width
) != (~0))
933 as_warn (_("operand %s0x%x out of range."),
934 string
, operand
->exp
.X_add_number
);
941 static char buffer
[20];
944 newfix (ptr
, type
, operand
)
947 expressionS
*operand
;
949 if (operand
->X_add_symbol
950 || operand
->X_op_symbol
951 || operand
->X_add_number
)
953 fix_new_exp (frag_now
,
963 apply_fix (ptr
, type
, operand
, size
)
966 expressionS
*operand
;
969 int n
= operand
->X_add_number
;
971 newfix ((ptr
- buffer
) / 2, type
, operand
);
974 case 8: /* 8 nibbles == 32 bits. */
979 case 4: /* 4 nibbles == 16 bits. */
991 /* Now we know what sort of opcodes it is. Let's build the bytes. */
993 #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
996 build_bytes (this_try
, operand
)
997 opcode_entry_type
*this_try
;
998 struct z8k_op
*operand ATTRIBUTE_UNUSED
;
1000 char *output_ptr
= buffer
;
1004 unsigned int *class_ptr
;
1006 frag_wane (frag_now
);
1009 memset (buffer
, 20, 0);
1010 class_ptr
= this_try
->byte_info
;
1012 for (nibble
= 0; (c
= *class_ptr
++); nibble
++)
1015 switch (c
& CLASS_MASK
)
1021 /* Direct address, we don't cope with the SS mode right now. */
1024 /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
1025 output_ptr
= apply_fix (output_ptr
, R_IMM32
, da_operand
, 8);
1029 output_ptr
= apply_fix (output_ptr
, R_IMM16
, da_operand
, 4);
1035 output_ptr
= apply_fix (output_ptr
, R_JR
, da_operand
, 2);
1042 output_ptr
= apply_fix (output_ptr
, R_DISP7
, da_operand
, 2);
1049 output_ptr
= apply_fix (output_ptr
, R_DISP7
, da_operand
, 2);
1050 output_ptr
[-2] = 0x8;
1054 case CLASS_BIT_1OR2
:
1055 *output_ptr
= c
& 0xf;
1058 if (imm_operand
->X_add_number
== 2)
1060 else if (imm_operand
->X_add_number
!= 1)
1061 as_bad (_("immediate must be 1 or 2"));
1064 as_bad (_("immediate 1 or 2 expected"));
1068 *output_ptr
++ = the_cc
;
1071 *output_ptr
++ = the_ctrl
;
1074 *output_ptr
++ = the_ctrl
| 0x8;
1077 *output_ptr
++ = (~the_interrupt
& 0x3);
1080 *output_ptr
++ = (~the_interrupt
& 0x3) | 0x4;
1083 *output_ptr
++ = the_flags
;
1086 *output_ptr
++ = c
& 0xf;
1089 if (reg
[c
& 0xf] == 0)
1090 as_bad (_("can't use R0 here"));
1093 case CLASS_REG_BYTE
:
1094 case CLASS_REG_WORD
:
1095 case CLASS_REG_LONG
:
1096 case CLASS_REG_QUAD
:
1097 /* Insert bit mattern of right reg. */
1098 *output_ptr
++ = reg
[c
& 0xf];
1101 switch (c
& ARG_MASK
)
1104 output_ptr
= apply_fix (output_ptr
, R_CALLR
, da_operand
, 4);
1107 output_ptr
= apply_fix (output_ptr
, R_REL16
, da_operand
, 4);
1110 output_ptr
= apply_fix (output_ptr
, R_IMM16
, da_operand
, 4);
1118 switch (c
& ARG_MASK
)
1121 output_ptr
= apply_fix (output_ptr
, R_IMM4L
, imm_operand
, 1);
1124 imm_operand
->X_add_number
--;
1125 output_ptr
= apply_fix (output_ptr
, R_IMM4L
, imm_operand
, 1);
1127 case ARG_IMMNMINUS1
:
1128 imm_operand
->X_add_number
--;
1129 output_ptr
= apply_fix (output_ptr
, R_IMM4L
, imm_operand
, 1);
1132 imm_operand
->X_add_number
= -imm_operand
->X_add_number
;
1134 output_ptr
= apply_fix (output_ptr
, R_IMM8
, imm_operand
, 2);
1137 output_ptr
= apply_fix (output_ptr
, R_IMM16
, imm_operand
, 4);
1141 output_ptr
= apply_fix (output_ptr
, R_IMM32
, imm_operand
, 8);
1151 /* Copy from the nibble buffer into the frag. */
1153 int length
= (output_ptr
- buffer
) / 2;
1155 char *fragp
= frag_more (length
);
1157 while (src
< output_ptr
)
1159 *fragp
= (src
[0] << 4) | src
[1];
1166 /* This is the guts of the machine-dependent assembler. STR points to a
1167 machine dependent instruction. This function is supposed to emit
1168 the frags/bytes it assembles to. */
1177 struct z8k_op operand
[3];
1178 opcode_entry_type
*opcode
;
1179 opcode_entry_type
*prev_opcode
;
1181 /* Drop leading whitespace. */
1185 /* Find the op code end. */
1186 for (op_start
= op_end
= str
;
1187 *op_end
!= 0 && *op_end
!= ' ';
1191 if (op_end
== op_start
)
1193 as_bad (_("can't find opcode "));
1199 opcode
= (opcode_entry_type
*) hash_find (opcode_hash_control
, op_start
);
1203 as_bad (_("unknown opcode"));
1207 if (opcode
->opcode
== 250)
1209 /* Was really a pseudo op. */
1214 char *old
= input_line_pointer
;
1217 input_line_pointer
= op_end
;
1221 while (*input_line_pointer
== ' ')
1222 input_line_pointer
++;
1223 p
= (pseudo_typeS
*) (opcode
->func
);
1225 (p
->poc_handler
) (p
->poc_val
);
1226 input_line_pointer
= old
;
1231 input_line_pointer
= get_operands (opcode
, op_end
, operand
);
1232 prev_opcode
= opcode
;
1234 opcode
= get_specific (opcode
, operand
);
1238 /* Couldn't find an opcode which matched the operands. */
1239 char *where
= frag_more (2);
1244 as_bad (_("Can't find opcode to match operands"));
1248 build_bytes (opcode
, operand
);
1253 tc_crawl_symbol_chain (headers
)
1254 object_headers
*headers ATTRIBUTE_UNUSED
;
1256 printf (_("call to tc_crawl_symbol_chain \n"));
1260 md_undefined_symbol (name
)
1261 char *name ATTRIBUTE_UNUSED
;
1267 tc_headers_hook (headers
)
1268 object_headers
*headers ATTRIBUTE_UNUSED
;
1270 printf (_("call to tc_headers_hook \n"));
1273 /* Various routines to kill one day. */
1274 /* Equal to MAX_PRECISION in atof-ieee.c. */
1275 #define MAX_LITTLENUMS 6
1277 /* Turn a string in input_line_pointer into a floating point constant
1278 of type TYPE, and store the appropriate bytes in *LITP. The number
1279 of LITTLENUMS emitted is stored in *SIZEP. An error message is
1280 returned, or NULL on OK. */
1283 md_atof (type
, litP
, sizeP
)
1289 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
1290 LITTLENUM_TYPE
*wordP
;
1322 return _("Bad call to MD_ATOF()");
1324 t
= atof_ieee (input_line_pointer
, type
, words
);
1326 input_line_pointer
= t
;
1328 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
1329 for (wordP
= words
; prec
--;)
1331 md_number_to_chars (litP
, (long) (*wordP
++), sizeof (LITTLENUM_TYPE
));
1332 litP
+= sizeof (LITTLENUM_TYPE
);
1337 CONST
char *md_shortopts
= "z:";
1339 struct option md_longopts
[] = {
1340 {NULL
, no_argument
, NULL
, 0}
1343 size_t md_longopts_size
= sizeof (md_longopts
);
1346 md_parse_option (c
, arg
)
1353 if (!strcmp (arg
, "8001"))
1355 else if (!strcmp (arg
, "8002"))
1359 as_bad (_("invalid architecture -z%s"), arg
);
1372 md_show_usage (stream
)
1375 fprintf (stream
, _("\
1377 -z8001 generate segmented code\n\
1378 -z8002 generate unsegmented code\n"));
1382 tc_aout_fix_to_chars ()
1384 printf (_("call to tc_aout_fix_to_chars \n"));
1389 md_convert_frag (headers
, seg
, fragP
)
1390 object_headers
*headers ATTRIBUTE_UNUSED
;
1391 segT seg ATTRIBUTE_UNUSED
;
1392 fragS
*fragP ATTRIBUTE_UNUSED
;
1394 printf (_("call to md_convert_frag \n"));
1399 md_section_align (seg
, size
)
1403 return ((size
+ (1 << section_alignment
[(int) seg
]) - 1)
1404 & (-1 << section_alignment
[(int) seg
]));
1409 md_apply_fix (fixP
, val
)
1413 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
1415 switch (fixP
->fx_r_type
)
1418 buf
[0] = (buf
[0] & 0xf0) | ((buf
[0] + val
) & 0xf);
1443 *buf
++ = (val
>> 8);
1447 *buf
++ = (val
>> 24);
1448 *buf
++ = (val
>> 16);
1449 *buf
++ = (val
>> 8);
1454 *buf
++ = (val
>> 16);
1456 *buf
++ = (val
>> 8);
1462 md_number_to_chars (buf
, val
, fixP
->fx_size
);
1471 md_estimate_size_before_relax (fragP
, segment_type
)
1472 register fragS
*fragP ATTRIBUTE_UNUSED
;
1473 register segT segment_type ATTRIBUTE_UNUSED
;
1475 printf (_("call tomd_estimate_size_before_relax \n"));
1479 /* Put number into target byte order. */
1482 md_number_to_chars (ptr
, use
, nbytes
)
1487 number_to_chars_bigendian (ptr
, use
, nbytes
);
1491 md_pcrel_from (fixP
)
1492 fixS
*fixP ATTRIBUTE_UNUSED
;
1498 tc_coff_symbol_emit_hook (s
)
1499 symbolS
*s ATTRIBUTE_UNUSED
;
1504 tc_reloc_mangle (fix_ptr
, intr
, base
)
1506 struct internal_reloc
*intr
;
1510 symbolS
*symbol_ptr
;
1512 if (fix_ptr
->fx_addsy
1513 && fix_ptr
->fx_subsy
)
1515 symbolS
*add
= fix_ptr
->fx_addsy
;
1516 symbolS
*sub
= fix_ptr
->fx_subsy
;
1518 if (S_GET_SEGMENT (add
) != S_GET_SEGMENT (sub
))
1519 as_bad (_("Can't subtract symbols in different sections %s %s"),
1520 S_GET_NAME (add
), S_GET_NAME (sub
));
1523 int diff
= S_GET_VALUE (add
) - S_GET_VALUE (sub
);
1525 fix_ptr
->fx_addsy
= 0;
1526 fix_ptr
->fx_subsy
= 0;
1527 fix_ptr
->fx_offset
+= diff
;
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
== 0)
1536 /* cons likes to create reloc32's whatever the size of the reloc. */
1537 switch (fix_ptr
->fx_size
)
1540 intr
->r_type
= R_IMM16
;
1543 intr
->r_type
= R_IMM8
;
1546 intr
->r_type
= R_IMM32
;
1553 intr
->r_type
= fix_ptr
->fx_r_type
;
1555 intr
->r_vaddr
= fix_ptr
->fx_frag
->fr_address
+ fix_ptr
->fx_where
+ base
;
1556 intr
->r_offset
= fix_ptr
->fx_offset
;
1559 intr
->r_symndx
= symbol_ptr
->sy_number
;
1561 intr
->r_symndx
= -1;