1 /* tc-z8k.c -- Assemble code for the Zilog Z800n
2 Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002
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 #include "safe-ctype.h"
30 #include "opcodes/z8k-opc.h"
32 const char comment_chars[] = "!";
33 const char line_comment_chars[] = "#";
34 const char line_separator_chars[] = ";";
37 extern int coff_flags;
39 const int md_reloc_size;
41 static void s_segm PARAMS ((int));
42 static void s_unseg PARAMS ((int));
43 static void even PARAMS ((int));
44 static int tohex PARAMS ((int));
45 static void sval PARAMS ((int));
49 int ignore ATTRIBUTE_UNUSED;
52 machine = bfd_mach_z8001;
58 int ignore ATTRIBUTE_UNUSED;
61 machine = bfd_mach_z8002;
67 int ignore ATTRIBUTE_UNUSED;
70 record_alignment (now_seg, 1);
86 int ignore ATTRIBUTE_UNUSED;
89 if (*input_line_pointer == '\'')
93 c = *input_line_pointer++;
98 c = (tohex (input_line_pointer[0]) << 4)
99 | tohex (input_line_pointer[1]);
100 input_line_pointer += 2;
102 FRAG_APPEND_1_CHAR (c);
103 c = *input_line_pointer++;
105 demand_empty_rest_of_line ();
109 /* This table describes all the machine specific pseudo-ops the assembler
110 has to support. The fields are:
111 pseudo-op name without dot
112 function to call to execute this pseudo-op
113 Integer arg to pass to the function
116 const pseudo_typeS md_pseudo_table[] = {
118 {"data.b" , cons , 1},
119 {"data.w" , cons , 2},
120 {"data.l" , cons , 4},
121 {"form" , listing_psize , 0},
122 {"heading", listing_title , 0},
123 {"import" , s_ignore , 0},
124 {"page" , listing_eject , 0},
125 {"program", s_ignore , 0},
126 {"z8001" , s_segm , 0},
127 {"z8002" , s_unseg , 0},
129 {"segm" , s_segm , 0},
130 {"unsegm" , s_unseg , 0},
131 {"unseg" , s_unseg , 0},
132 {"name" , s_app_file , 0},
133 {"global" , s_globl , 0},
138 {"rsect" , obj_coff_section, 0},
139 {"sect" , obj_coff_section, 0},
140 {"block" , s_space , 0},
145 const char EXP_CHARS[] = "eE";
147 /* Chars that mean this number is a floating point constant.
150 const char FLT_CHARS[] = "rRsSfFdDxXpP";
152 /* Opcode mnemonics. */
153 static struct hash_control *opcode_hash_control;
158 const opcode_entry_type *opcode;
161 opcode_hash_control = hash_new ();
163 for (opcode = z8k_table; opcode->name; opcode++)
165 /* Only enter unique codes into the table. */
166 if (idx != opcode->idx)
167 hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
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;
219 static char *whatreg PARAMS ((int *, char *));
220 static char *parse_reg PARAMS ((char *, int *, unsigned int *));
221 static char *parse_exp PARAMS ((char *, expressionS *));
222 static char *checkfor PARAMS ((char *, char));
223 static void regword PARAMS ((int, char *));
224 static void regaddr PARAMS ((int, char *));
225 static void get_ctrl_operand
226 PARAMS ((char **, struct z8k_op *, unsigned int));
227 static void get_flags_operand
228 PARAMS ((char **, struct z8k_op *, unsigned int));
229 static void get_interrupt_operand
230 PARAMS ((char **, struct z8k_op *, unsigned int));
231 static void get_cc_operand
232 PARAMS ((char **, struct z8k_op *, unsigned int));
233 static void get_operand
234 PARAMS ((char **, struct z8k_op *, unsigned int));
235 static char *get_operands
236 PARAMS ((const opcode_entry_type *, char *, op_type *));
237 static opcode_entry_type *get_specific
238 PARAMS ((opcode_entry_type *, op_type *));
240 PARAMS ((int, int, expressionS *));
241 static char *apply_fix
242 PARAMS ((char *, int, expressionS *, int));
243 static void build_bytes
244 PARAMS ((opcode_entry_type *, struct z8k_op *));
251 if (ISDIGIT (src[1]))
253 *reg = (src[0] - '0') * 10 + src[1] - '0';
258 *reg = (src[0] - '0');
269 WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
277 /* Try to parse a reg name. Return a pointer to the first character
278 in SRC after the reg name. */
281 parse_reg (src, mode, reg)
289 if (src[0] == 's' && src[1] == 'p' && (src[2] == 0 || src[2] == ','))
293 *mode = CLASS_REG_LONG;
298 *mode = CLASS_REG_WORD;
307 if (src[2] < '0' || src[2] > '9')
308 return res; /* Assume no register name but a label starting with 'rr'. */
309 *mode = CLASS_REG_LONG;
310 res = whatreg (reg, src + 2);
313 as_warn (_("register rr%d, out of range."), regno);
315 else if (src[1] == 'h')
317 if (src[2] < '0' || src[2] > '9')
318 return res; /* Assume no register name but a label starting with 'rh'. */
319 *mode = CLASS_REG_BYTE;
320 res = whatreg (reg, src + 2);
323 as_warn (_("register rh%d, out of range."), regno);
325 else if (src[1] == 'l')
327 if (src[2] < '0' || src[2] > '9')
328 return res; /* Assume no register name but a label starting with 'rl'. */
329 *mode = CLASS_REG_BYTE;
330 res = whatreg (reg, src + 2);
333 as_warn (_("register rl%d, out of range."), regno);
336 else if (src[1] == 'q')
338 if (src[2] < '0' || src[2] > '9')
339 return res; /* Assume no register name but a label starting with 'rq'. */
340 *mode = CLASS_REG_QUAD;
341 res = whatreg (reg, src + 2);
344 as_warn (_("register rq%d, out of range."), regno);
348 if (src[1] < '0' || src[1] > '9')
349 return res; /* Assume no register name but a label starting with 'r'. */
350 *mode = CLASS_REG_WORD;
351 res = whatreg (reg, src + 1);
354 as_warn (_("register r%d, out of range."), regno);
365 char *save = input_line_pointer;
368 input_line_pointer = s;
370 if (op->X_op == O_absent)
371 as_bad (_("missing operand"));
372 new = input_line_pointer;
373 input_line_pointer = save;
377 /* The many forms of operand:
399 as_bad (_("expected %c"), what);
404 /* Make sure the mode supplied is the size of a word. */
407 regword (mode, string)
416 as_bad (_("register is wrong size for a word %s"), string);
420 /* Make sure the mode supplied is the size of an address. */
423 regaddr (mode, string)
429 ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
432 as_bad (_("register is wrong size for address %s"), string);
441 struct ctrl_names ctrl_table[] = {
454 get_ctrl_operand (ptr, mode, dst)
457 unsigned int dst ATTRIBUTE_UNUSED;
465 mode->mode = CLASS_CTRL;
466 for (i = 0; ctrl_table[i].name; i++)
470 for (j = 0; ctrl_table[i].name[j]; j++)
472 if (ctrl_table[i].name[j] != src[j])
475 the_ctrl = ctrl_table[i].value;
491 struct flag_names flag_table[] = {
502 get_flags_operand (ptr, mode, dst)
505 unsigned int dst ATTRIBUTE_UNUSED;
514 mode->mode = CLASS_FLAGS;
516 for (j = 0; j <= 9; j++)
520 for (i = 0; flag_table[i].name; i++)
522 if (flag_table[i].name[0] == src[j])
524 the_flags = the_flags | flag_table[i].value;
537 struct interrupt_names {
543 struct interrupt_names intr_table[] = {
552 get_interrupt_operand (ptr, mode, dst)
555 unsigned int dst ATTRIBUTE_UNUSED;
563 mode->mode = CLASS_IMM;
564 for (i = 0; intr_table[i].name; i++)
568 for (j = 0; intr_table[i].name[j]; j++)
570 if (intr_table[i].name[j] != src[j])
573 the_interrupt = intr_table[i].value;
589 struct cc_names table[] = {
616 get_cc_operand (ptr, mode, dst)
619 unsigned int dst ATTRIBUTE_UNUSED;
627 mode->mode = CLASS_CC;
628 for (i = 0; table[i].name; i++)
632 for (j = 0; table[i].name[j]; j++)
634 if (table[i].name[j] != src[j])
637 the_cc = table[i].value;
647 get_operand (ptr, mode, dst)
650 unsigned int dst ATTRIBUTE_UNUSED;
661 mode->mode = CLASS_IMM;
662 imm_operand = &(mode->exp);
663 src = parse_exp (src + 1, &(mode->exp));
665 else if (*src == '@')
669 mode->mode = CLASS_IR;
670 src = parse_reg (src + 1, &d, &mode->reg);
676 end = parse_reg (src, &mode->mode, ®n);
686 end = parse_reg (src, &nw, &nr);
693 as_bad (_("Missing ) in ra(rb)"));
697 regaddr (mode->mode, "ra(rb) ra");
699 regword (mode->mode, "ra(rb) rb");
701 mode->mode = CLASS_BX;
711 src = parse_exp (src, &(mode->exp));
712 src = checkfor (src, ')');
713 mode->mode = CLASS_BA;
716 imm_operand = &(mode->exp);
727 /* No initial reg. */
728 src = parse_exp (src, &(mode->exp));
732 end = parse_reg (src, &(mode->mode), ®n);
733 regword (mode->mode, "addr(Ra) ra");
734 mode->mode = CLASS_X;
737 da_operand = &(mode->exp);
738 src = checkfor (end, ')');
742 /* Just an address. */
743 mode->mode = CLASS_DA;
746 da_operand = &(mode->exp);
754 get_operands (opcode, op_end, operand)
755 const opcode_entry_type *opcode;
763 switch (opcode->noperands)
771 if (opcode->arg_info[0] == CLASS_CC)
772 get_cc_operand (&ptr, operand + 0, 0);
774 else if (opcode->arg_info[0] == CLASS_FLAGS)
775 get_flags_operand (&ptr, operand + 0, 0);
777 else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
778 get_interrupt_operand (&ptr, operand + 0, 0);
781 get_operand (&ptr, operand + 0, 0);
788 if (opcode->arg_info[0] == CLASS_CC)
789 get_cc_operand (&ptr, operand + 0, 0);
791 else if (opcode->arg_info[0] == CLASS_CTRL)
793 get_ctrl_operand (&ptr, operand + 0, 0);
798 get_operand (&ptr, operand + 0, 0);
804 get_ctrl_operand (&ptr, operand + 1, 1);
809 get_operand (&ptr, operand + 0, 0);
815 get_operand (&ptr, operand + 1, 1);
819 get_operand (&ptr, operand + 0, 0);
822 get_operand (&ptr, operand + 1, 1);
825 get_operand (&ptr, operand + 2, 2);
829 get_operand (&ptr, operand + 0, 0);
832 get_operand (&ptr, operand + 1, 1);
835 get_operand (&ptr, operand + 2, 2);
838 get_cc_operand (&ptr, operand + 3, 3);
848 /* Passed a pointer to a list of opcodes which use different
849 addressing modes. Return the opcode which matches the opcodes
852 static opcode_entry_type *
853 get_specific (opcode, operands)
854 opcode_entry_type *opcode;
857 opcode_entry_type *this_try = opcode;
859 unsigned int noperands = opcode->noperands;
861 int this_index = opcode->idx;
863 while (this_index == opcode->idx && !found)
868 for (i = 0; i < noperands; i++)
870 unsigned int mode = operands[i].mode;
872 if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
874 /* It could be a pc rel operand, if this is a da mode
875 and we like disps, then insert it. */
877 if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
879 /* This is the case. */
880 operands[i].mode = CLASS_DISP;
882 else if (mode == CLASS_BA && this_try->arg_info[i])
884 /* Can't think of a way to turn what we've been
885 given into something that's OK. */
888 else if (this_try->arg_info[i] & CLASS_PR)
890 if (mode == CLASS_REG_LONG && segmented_mode)
894 else if (mode == CLASS_REG_WORD && !segmented_mode)
904 switch (mode & CLASS_MASK)
919 reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
934 #if 0 /* Not used. */
936 check_operand (operand, width, string)
937 struct z8k_op *operand;
941 if (operand->exp.X_add_symbol == 0
942 && operand->exp.X_op_symbol == 0)
945 /* No symbol involved, let's look at offset, it's dangerous if
946 any of the high bits are not 0 or ff's, find out by oring or
947 anding with the width and seeing if the answer is 0 or all
949 if ((operand->exp.X_add_number & ~width) != 0 &&
950 (operand->exp.X_add_number | width) != (~0))
952 as_warn (_("operand %s0x%x out of range."),
953 string, operand->exp.X_add_number);
960 static char buffer[20];
963 newfix (ptr, type, operand)
966 expressionS *operand;
968 if (operand->X_add_symbol
969 || operand->X_op_symbol
970 || operand->X_add_number)
972 fix_new_exp (frag_now,
982 apply_fix (ptr, type, operand, size)
985 expressionS *operand;
988 int n = operand->X_add_number;
990 newfix ((ptr - buffer) / 2, type, operand);
993 case 8: /* 8 nibbles == 32 bits. */
998 case 4: /* 4 nibbles == 16 bits. */
1010 /* Now we know what sort of opcodes it is. Let's build the bytes. */
1012 #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
1015 build_bytes (this_try, operand)
1016 opcode_entry_type *this_try;
1017 struct z8k_op *operand ATTRIBUTE_UNUSED;
1019 char *output_ptr = buffer;
1023 unsigned int *class_ptr;
1025 frag_wane (frag_now);
1028 memset (buffer, 0, sizeof (buffer));
1029 class_ptr = this_try->byte_info;
1031 for (nibble = 0; (c = *class_ptr++); nibble++)
1034 switch (c & CLASS_MASK)
1040 /* Direct address, we don't cope with the SS mode right now. */
1043 /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
1044 output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8);
1048 output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
1054 output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2);
1061 output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
1068 output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
1069 output_ptr[-2] = 0x8;
1073 case CLASS_BIT_1OR2:
1074 *output_ptr = c & 0xf;
1077 if (imm_operand->X_add_number == 2)
1079 else if (imm_operand->X_add_number != 1)
1080 as_bad (_("immediate must be 1 or 2"));
1083 as_bad (_("immediate 1 or 2 expected"));
1087 *output_ptr++ = the_cc;
1090 *output_ptr++ = the_ctrl;
1093 *output_ptr++ = the_ctrl | 0x8;
1096 *output_ptr++ = (~the_interrupt & 0x3);
1099 *output_ptr++ = (~the_interrupt & 0x3) | 0x4;
1102 *output_ptr++ = the_flags;
1106 *output_ptr++ = c & 0xf;
1109 if (reg[c & 0xf] == 0)
1110 as_bad (_("can't use R0 here"));
1113 case CLASS_REG_BYTE:
1114 case CLASS_REG_WORD:
1115 case CLASS_REG_LONG:
1116 case CLASS_REG_QUAD:
1117 /* Insert bit mattern of right reg. */
1118 *output_ptr++ = reg[c & 0xf];
1121 switch (c & ARG_MASK)
1124 output_ptr = apply_fix (output_ptr, R_CALLR, da_operand, 4);
1127 output_ptr = apply_fix (output_ptr, R_REL16, da_operand, 4);
1130 output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
1138 switch (c & ARG_MASK)
1141 imm_operand->X_add_number = -imm_operand->X_add_number;
1144 output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
1147 imm_operand->X_add_number--;
1148 output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
1150 case ARG_IMMNMINUS1:
1151 imm_operand->X_add_number--;
1152 output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
1155 imm_operand->X_add_number = -imm_operand->X_add_number;
1157 output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2);
1160 output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4);
1164 output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8);
1174 /* Copy from the nibble buffer into the frag. */
1176 int length = (output_ptr - buffer) / 2;
1178 char *fragp = frag_more (length);
1180 while (src < output_ptr)
1182 *fragp = (src[0] << 4) | src[1];
1189 /* This is the guts of the machine-dependent assembler. STR points to a
1190 machine dependent instruction. This function is supposed to emit
1191 the frags/bytes it assembles to. */
1200 struct z8k_op operand[3];
1201 opcode_entry_type *opcode;
1202 opcode_entry_type *prev_opcode;
1204 /* Drop leading whitespace. */
1208 /* Find the op code end. */
1209 for (op_start = op_end = str;
1210 *op_end != 0 && *op_end != ' ';
1214 if (op_end == op_start)
1216 as_bad (_("can't find opcode "));
1222 opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
1226 as_bad (_("unknown opcode"));
1230 if (opcode->opcode == 250)
1234 char *old = input_line_pointer;
1237 /* Was really a pseudo op. */
1239 input_line_pointer = op_end;
1243 while (*input_line_pointer == ' ')
1244 input_line_pointer++;
1245 p = (pseudo_typeS *) (opcode->func);
1247 (p->poc_handler) (p->poc_val);
1248 input_line_pointer = old;
1253 char *new_input_line_pointer;
1255 new_input_line_pointer = get_operands (opcode, op_end, operand);
1256 if (new_input_line_pointer)
1257 input_line_pointer = new_input_line_pointer;
1258 prev_opcode = opcode;
1260 opcode = get_specific (opcode, operand);
1264 /* Couldn't find an opcode which matched the operands. */
1265 char *where = frag_more (2);
1270 as_bad (_("Can't find opcode to match operands"));
1274 build_bytes (opcode, operand);
1279 tc_crawl_symbol_chain (headers)
1280 object_headers *headers ATTRIBUTE_UNUSED;
1282 printf (_("call to tc_crawl_symbol_chain \n"));
1286 md_undefined_symbol (name)
1287 char *name ATTRIBUTE_UNUSED;
1293 tc_headers_hook (headers)
1294 object_headers *headers ATTRIBUTE_UNUSED;
1296 printf (_("call to tc_headers_hook \n"));
1299 /* Various routines to kill one day. */
1300 /* Equal to MAX_PRECISION in atof-ieee.c. */
1301 #define MAX_LITTLENUMS 6
1303 /* Turn a string in input_line_pointer into a floating point constant
1304 of type TYPE, and store the appropriate bytes in *LITP. The number
1305 of LITTLENUMS emitted is stored in *SIZEP. An error message is
1306 returned, or NULL on OK. */
1309 md_atof (type, litP, sizeP)
1315 LITTLENUM_TYPE words[MAX_LITTLENUMS];
1316 LITTLENUM_TYPE *wordP;
1347 return _("Bad call to MD_ATOF()");
1349 t = atof_ieee (input_line_pointer, type, words);
1351 input_line_pointer = t;
1353 *sizeP = prec * sizeof (LITTLENUM_TYPE);
1354 for (wordP = words; prec--;)
1356 md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
1357 litP += sizeof (LITTLENUM_TYPE);
1362 const char *md_shortopts = "z:";
1364 struct option md_longopts[] =
1366 {NULL, no_argument, NULL, 0}
1369 size_t md_longopts_size = sizeof (md_longopts);
1372 md_parse_option (c, arg)
1379 if (!strcmp (arg, "8001"))
1381 else if (!strcmp (arg, "8002"))
1385 as_bad (_("invalid architecture -z%s"), arg);
1398 md_show_usage (stream)
1401 fprintf (stream, _("\
1403 -z8001 generate segmented code\n\
1404 -z8002 generate unsegmented code\n"));
1408 md_convert_frag (headers, seg, fragP)
1409 object_headers *headers ATTRIBUTE_UNUSED;
1410 segT seg ATTRIBUTE_UNUSED;
1411 fragS *fragP ATTRIBUTE_UNUSED;
1413 printf (_("call to md_convert_frag \n"));
1418 md_section_align (seg, size)
1422 return ((size + (1 << section_alignment[(int) seg]) - 1)
1423 & (-1 << section_alignment[(int) seg]));
1427 md_apply_fix3 (fixP, valP, segment)
1430 segT segment ATTRIBUTE_UNUSED;
1432 long val = * (long *) valP;
1433 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
1435 switch (fixP->fx_r_type)
1438 buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf);
1463 *buf++ = (val >> 8);
1467 *buf++ = (val >> 24);
1468 *buf++ = (val >> 16);
1469 *buf++ = (val >> 8);
1474 *buf++ = (val >> 16);
1476 *buf++ = (val >> 8);
1482 md_number_to_chars (buf, val, fixP->fx_size);
1489 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
1494 md_estimate_size_before_relax (fragP, segment_type)
1495 register fragS *fragP ATTRIBUTE_UNUSED;
1496 register segT segment_type ATTRIBUTE_UNUSED;
1498 printf (_("call tomd_estimate_size_before_relax\n"));
1502 /* Put number into target byte order. */
1505 md_number_to_chars (ptr, use, nbytes)
1510 number_to_chars_bigendian (ptr, use, nbytes);
1514 md_pcrel_from (fixP)
1515 fixS *fixP ATTRIBUTE_UNUSED;
1521 tc_coff_symbol_emit_hook (s)
1522 symbolS *s ATTRIBUTE_UNUSED;
1527 tc_reloc_mangle (fix_ptr, intr, base)
1529 struct internal_reloc *intr;
1533 symbolS *symbol_ptr;
1535 if (fix_ptr->fx_addsy
1536 && fix_ptr->fx_subsy)
1538 symbolS *add = fix_ptr->fx_addsy;
1539 symbolS *sub = fix_ptr->fx_subsy;
1541 if (S_GET_SEGMENT (add) != S_GET_SEGMENT (sub))
1542 as_bad (_("Can't subtract symbols in different sections %s %s"),
1543 S_GET_NAME (add), S_GET_NAME (sub));
1546 int diff = S_GET_VALUE (add) - S_GET_VALUE (sub);
1548 fix_ptr->fx_addsy = 0;
1549 fix_ptr->fx_subsy = 0;
1550 fix_ptr->fx_offset += diff;
1553 symbol_ptr = fix_ptr->fx_addsy;
1555 /* If this relocation is attached to a symbol then it's ok
1557 if (fix_ptr->fx_r_type == 0)
1559 /* cons likes to create reloc32's whatever the size of the reloc. */
1560 switch (fix_ptr->fx_size)
1563 intr->r_type = R_IMM16;
1566 intr->r_type = R_IMM8;
1569 intr->r_type = R_IMM32;
1576 intr->r_type = fix_ptr->fx_r_type;
1578 intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
1579 intr->r_offset = fix_ptr->fx_offset;
1582 intr->r_symndx = symbol_ptr->sy_number;
1584 intr->r_symndx = -1;