1 /* tc-z8k.c -- Assemble code for the Zilog Z800n
2 Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003
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 /* This is non-zero if target was set from the command line. */
42 static int z8k_target_from_cmdline;
50 machine = bfd_mach_z8001;
56 machine = bfd_mach_z8002;
62 even (int ignore ATTRIBUTE_UNUSED)
65 record_alignment (now_seg, 1);
79 sval (int ignore ATTRIBUTE_UNUSED)
82 if (*input_line_pointer == '\'')
86 c = *input_line_pointer++;
91 c = (tohex (input_line_pointer[0]) << 4)
92 | tohex (input_line_pointer[1]);
93 input_line_pointer += 2;
95 FRAG_APPEND_1_CHAR (c);
96 c = *input_line_pointer++;
98 demand_empty_rest_of_line ();
102 /* This table describes all the machine specific pseudo-ops the assembler
103 has to support. The fields are:
104 pseudo-op name without dot
105 function to call to execute this pseudo-op
106 Integer arg to pass to the function
109 const pseudo_typeS md_pseudo_table[] = {
111 {"data.b" , cons , 1},
112 {"data.w" , cons , 2},
113 {"data.l" , cons , 4},
114 {"form" , listing_psize , 0},
115 {"heading", listing_title , 0},
116 {"import" , s_ignore , 0},
117 {"page" , listing_eject , 0},
118 {"program", s_ignore , 0},
119 {"z8001" , s_segm , 1},
120 {"z8002" , s_segm , 0},
122 {"segm" , s_segm , 1},
123 {"unsegm" , s_segm , 0},
124 {"unseg" , s_segm , 0},
125 {"name" , s_app_file , 0},
126 {"global" , s_globl , 0},
131 {"rsect" , obj_coff_section, 0},
132 {"sect" , obj_coff_section, 0},
133 {"block" , s_space , 0},
138 const char EXP_CHARS[] = "eE";
140 /* Chars that mean this number is a floating point constant.
143 const char FLT_CHARS[] = "rRsSfFdDxXpP";
145 /* Opcode mnemonics. */
146 static struct hash_control *opcode_hash_control;
151 const opcode_entry_type *opcode;
154 opcode_hash_control = hash_new ();
156 for (opcode = z8k_table; opcode->name; opcode++)
158 /* Only enter unique codes into the table. */
159 if (idx != opcode->idx)
160 hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
164 /* Default to z8002. */
165 if (! z8k_target_from_cmdline)
168 /* Insert the pseudo ops, too. */
169 for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
171 opcode_entry_type *fake_opcode;
172 fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
173 fake_opcode->name = md_pseudo_table[idx].poc_name;
174 fake_opcode->func = (void *) (md_pseudo_table + idx);
175 fake_opcode->opcode = 250;
176 hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
180 typedef struct z8k_op {
189 /* Any other register associated with the mode. */
192 /* Any expression. */
196 static expressionS *da_operand;
197 static expressionS *imm_operand;
202 static int the_flags;
203 static int the_interrupt;
206 whatreg (int *reg, char *src)
208 if (ISDIGIT (src[1]))
210 *reg = (src[0] - '0') * 10 + src[1] - '0';
215 *reg = (src[0] - '0');
226 WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
234 /* Try to parse a reg name. Return a pointer to the first character
235 in SRC after the reg name. */
238 parse_reg (char *src, int *mode, unsigned int *reg)
243 /* Check for stack pointer "sp" alias. */
244 if ((src[0] == 's' || src[0] == 'S')
245 && (src[1] == 'p' || src[1] == 'P')
246 && (src[2] == 0 || src[2] == ','))
250 *mode = CLASS_REG_LONG;
255 *mode = CLASS_REG_WORD;
261 if (src[0] == 'r' || src[0] == 'R')
263 if (src[1] == 'r' || src[1] == 'R')
265 if (src[2] < '0' || src[2] > '9')
266 return res; /* Assume no register name but a label starting with 'rr'. */
267 *mode = CLASS_REG_LONG;
268 res = whatreg (reg, src + 2);
271 as_bad (_("register rr%d out of range"), regno);
273 as_bad (_("register rr%d does not exist"), regno);
275 else if (src[1] == 'h' || src[1] == 'H')
277 if (src[2] < '0' || src[2] > '9')
278 return res; /* Assume no register name but a label starting with 'rh'. */
279 *mode = CLASS_REG_BYTE;
280 res = whatreg (reg, src + 2);
283 as_bad (_("register rh%d out of range"), regno);
285 else if (src[1] == 'l' || src[1] == 'L')
287 if (src[2] < '0' || src[2] > '9')
288 return res; /* Assume no register name but a label starting with 'rl'. */
289 *mode = CLASS_REG_BYTE;
290 res = whatreg (reg, src + 2);
293 as_bad (_("register rl%d out of range"), regno);
296 else if (src[1] == 'q' || src[1] == 'Q')
298 if (src[2] < '0' || src[2] > '9')
299 return res; /* Assume no register name but a label starting with 'rq'. */
300 *mode = CLASS_REG_QUAD;
301 res = whatreg (reg, src + 2);
304 as_bad (_("register rq%d out of range"), regno);
306 as_bad (_("register rq%d does not exist"), regno);
310 if (src[1] < '0' || src[1] > '9')
311 return res; /* Assume no register name but a label starting with 'r'. */
312 *mode = CLASS_REG_WORD;
313 res = whatreg (reg, src + 1);
316 as_bad (_("register r%d out of range"), regno);
323 parse_exp (char *s, expressionS *op)
325 char *save = input_line_pointer;
328 input_line_pointer = s;
330 if (op->X_op == O_absent)
331 as_bad (_("missing operand"));
332 new = input_line_pointer;
333 input_line_pointer = save;
337 /* The many forms of operand:
352 checkfor (char *ptr, char what)
357 as_bad (_("expected %c"), what);
362 /* Make sure the mode supplied is the size of a word. */
365 regword (int mode, char *string)
372 as_bad (_("register is wrong size for a word %s"), string);
376 /* Make sure the mode supplied is the size of an address. */
379 regaddr (int mode, char *string)
383 ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
386 as_bad (_("register is wrong size for address %s"), string);
395 static struct ctrl_names ctrl_table[] = {
396 { 0x1, "flags" }, /* ldctlb only. */
397 { 0x2, "fcw" }, /* ldctl only. Applies to all remaining control registers. */
409 get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
417 mode->mode = CLASS_CTRL;
418 for (i = 0; ctrl_table[i].name; i++)
420 l = strlen (ctrl_table[i].name);
421 if (! strncasecmp (ctrl_table[i].name, src, l))
423 the_ctrl = ctrl_table[i].value;
424 if (*(src + l) && *(src + l) != ',')
426 *ptr = src + l; /* Valid control name found: "consume" it. */
438 static struct flag_names flag_table[] = {
450 get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
460 mode->mode = CLASS_FLAGS;
462 for (j = 0; j <= 9; j++)
467 for (i = 0; flag_table[i].name; i++)
469 if (flag_table[i].name[0] == c)
471 the_flags = the_flags | flag_table[i].value;
483 struct interrupt_names {
488 static struct interrupt_names intr_table[] = {
497 get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
505 mode->mode = CLASS_IMM;
510 for (i = 0; intr_table[i].name; i++)
512 l = strlen (intr_table[i].name);
513 if (! strncasecmp (intr_table[i].name, src, l))
515 the_interrupt |= intr_table[i].value;
516 if (*(src + l) && *(src + l) != ',')
520 as_bad (_("unknown interrupt %s"), src);
521 while (**ptr && ! is_end_of_line[(unsigned char) **ptr])
522 (*ptr)++; /* Consume rest of line. */
542 /* No interrupt type specified, opcode won't do anything. */
543 as_warn (_("opcode has no effect"));
552 static struct cc_names table[] = {
587 get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
595 mode->mode = CLASS_CC;
596 for (i = 0; table[i].name; i++)
598 l = strlen (table[i].name);
599 if (! strncasecmp (table[i].name, src, l))
601 the_cc = table[i].value;
602 if (*(src + l) && *(src + l) != ',')
604 *ptr = src + l; /* Valid cc found: "consume" it. */
608 the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */
612 get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
623 mode->mode = CLASS_IMM;
624 imm_operand = &(mode->exp);
625 src = parse_exp (src + 1, &(mode->exp));
627 else if (*src == '@')
629 mode->mode = CLASS_IR;
630 src = parse_reg (src + 1, &mode->regsize, &mode->reg);
636 end = parse_reg (src, &mode->mode, ®n);
646 end = parse_reg (src, &nw, &nr);
653 as_bad (_("Missing ) in ra(rb)"));
657 regaddr (mode->mode, "ra(rb) ra");
659 regword (mode->mode, "ra(rb) rb");
661 mode->mode = CLASS_BX;
671 src = parse_exp (src, &(mode->exp));
672 src = checkfor (src, ')');
673 mode->mode = CLASS_BA;
676 imm_operand = &(mode->exp);
687 /* No initial reg. */
688 src = parse_exp (src, &(mode->exp));
692 end = parse_reg (src, &(mode->mode), ®n);
693 regword (mode->mode, "addr(Ra) ra");
694 mode->mode = CLASS_X;
697 da_operand = &(mode->exp);
698 src = checkfor (end, ')');
702 /* Just an address. */
703 mode->mode = CLASS_DA;
706 da_operand = &(mode->exp);
714 get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand)
719 switch (opcode->noperands)
729 if (opcode->arg_info[0] == CLASS_CC)
731 get_cc_operand (&ptr, operand + 0, 0);
734 if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
736 as_bad (_("invalid condition code '%s'"), ptr);
737 while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
738 ptr++; /* Consume rest of line. */
741 else if (opcode->arg_info[0] == CLASS_FLAGS)
743 get_flags_operand (&ptr, operand + 0, 0);
746 if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
748 as_bad (_("invalid flag '%s'"), ptr);
749 while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
750 ptr++; /* Consume rest of line. */
753 else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
754 get_interrupt_operand (&ptr, operand + 0, 0);
756 get_operand (&ptr, operand + 0, 0);
763 if (opcode->arg_info[0] == CLASS_CC)
765 get_cc_operand (&ptr, operand + 0, 0);
768 if (*ptr != ',' && strchr (ptr + 1, ','))
775 as_bad (_("invalid condition code '%s'"), savptr);
778 else if (opcode->arg_info[0] == CLASS_CTRL)
780 get_ctrl_operand (&ptr, operand + 0, 0);
785 get_operand (&ptr, operand + 0, 0);
791 get_ctrl_operand (&ptr, operand + 1, 1);
798 get_operand (&ptr, operand + 0, 0);
804 get_operand (&ptr, operand + 1, 1);
808 get_operand (&ptr, operand + 0, 0);
811 get_operand (&ptr, operand + 1, 1);
814 get_operand (&ptr, operand + 2, 2);
818 get_operand (&ptr, operand + 0, 0);
821 get_operand (&ptr, operand + 1, 1);
824 get_operand (&ptr, operand + 2, 2);
827 get_cc_operand (&ptr, operand + 3, 3);
837 /* Passed a pointer to a list of opcodes which use different
838 addressing modes. Return the opcode which matches the opcodes
841 static opcode_entry_type *
842 get_specific (opcode_entry_type *opcode, op_type *operands)
844 opcode_entry_type *this_try = opcode;
846 unsigned int noperands = opcode->noperands;
848 int this_index = opcode->idx;
850 while (this_index == opcode->idx && !found)
855 for (i = 0; i < noperands; i++)
857 unsigned int mode = operands[i].mode;
859 if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO))
861 mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO;
864 if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
866 /* It could be a pc rel operand, if this is a da mode
867 and we like disps, then insert it. */
869 if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
871 /* This is the case. */
872 operands[i].mode = CLASS_DISP;
874 else if (mode == CLASS_BA && this_try->arg_info[i])
876 /* Can't think of a way to turn what we've been
877 given into something that's OK. */
880 else if (this_try->arg_info[i] & CLASS_PR)
882 if (mode == CLASS_REG_LONG && segmented_mode)
886 else if (mode == CLASS_REG_WORD && !segmented_mode)
896 switch (mode & CLASS_MASK)
901 if (operands[i].regsize != CLASS_REG_WORD)
902 as_bad (_("invalid indirect register size"));
903 reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
906 if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG)
907 || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD))
908 as_bad (_("invalid indirect register size"));
909 reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
921 reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
924 if (this_try->opcode == OPC_ldctlb && the_ctrl != 1)
925 as_bad (_("invalid control register name"));
940 static char buffer[20];
943 newfix (int ptr, int type, int size, expressionS *operand)
947 /* size is in nibbles. */
949 if (operand->X_add_symbol
950 || operand->X_op_symbol
951 || operand->X_add_number)
960 fix_new_exp (frag_now,
970 apply_fix (char *ptr, int type, expressionS *operand, int size)
972 long n = operand->X_add_number;
974 /* size is in nibbles. */
976 newfix ((ptr - buffer) / 2, type, size + 1, operand);
979 case 8: /* 8 nibbles == 32 bits. */
984 case 4: /* 4 nibbles == 16 bits. */
996 /* Now we know what sort of opcodes it is. Let's build the bytes. */
998 #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
1001 build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED)
1003 char *output_ptr = buffer;
1006 unsigned int *class_ptr;
1008 frag_wane (frag_now);
1011 memset (buffer, 0, sizeof (buffer));
1012 class_ptr = this_try->byte_info;
1014 for (nibble = 0; (c = *class_ptr++); nibble++)
1017 switch (c & CLASS_MASK)
1023 /* Direct address, we don't cope with the SS mode right now. */
1026 /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
1027 output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8);
1031 output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
1037 output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2);
1044 output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
1051 output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
1052 output_ptr[-2] = 0x8;
1056 case CLASS_BIT_1OR2:
1057 *output_ptr = c & 0xf;
1060 if (imm_operand->X_add_number == 2)
1062 else if (imm_operand->X_add_number != 1)
1063 as_bad (_("immediate must be 1 or 2"));
1066 as_bad (_("immediate 1 or 2 expected"));
1070 *output_ptr++ = the_cc;
1073 if (the_ctrl < 2 || the_ctrl > 7)
1074 as_bad (_("invalid control register name"));
1075 *output_ptr++ = the_ctrl;
1078 if (the_ctrl < 2 || the_ctrl > 7)
1079 as_bad (_("invalid control register name"));
1080 *output_ptr++ = the_ctrl | 0x8;
1083 *output_ptr++ = (~the_interrupt & 0x3);
1086 *output_ptr++ = (~the_interrupt & 0x3) | 0x4;
1089 *output_ptr++ = the_flags;
1093 *output_ptr++ = c & 0xf;
1096 if (reg[c & 0xf] == 0)
1097 as_bad (_("can't use R0 here"));
1100 case CLASS_REG_BYTE:
1101 case CLASS_REG_WORD:
1102 case CLASS_REG_LONG:
1103 case CLASS_REG_QUAD:
1104 /* Insert bit mattern of right reg. */
1105 *output_ptr++ = reg[c & 0xf];
1108 switch (c & ARG_MASK)
1111 output_ptr = apply_fix (output_ptr, R_CALLR, da_operand, 4);
1114 output_ptr = apply_fix (output_ptr, R_REL16, da_operand, 4);
1117 output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
1124 switch (c & ARG_MASK)
1127 if (imm_operand->X_add_number > 15)
1129 as_bad (_("immediate value out of range"));
1131 imm_operand->X_add_number = -imm_operand->X_add_number;
1132 output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
1134 /*case ARG_IMMNMINUS1: not used. */
1136 imm_operand->X_add_number--;
1139 if (imm_operand->X_add_number > 15)
1141 as_bad (_("immediate value out of range"));
1143 output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
1146 imm_operand->X_add_number = -imm_operand->X_add_number;
1149 output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2);
1152 output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4);
1155 output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8);
1164 /* Copy from the nibble buffer into the frag. */
1166 int length = (output_ptr - buffer) / 2;
1168 char *fragp = frag_more (length);
1170 while (src < output_ptr)
1172 *fragp = (src[0] << 4) | src[1];
1179 /* This is the guts of the machine-dependent assembler. STR points to a
1180 machine dependent instruction. This function is supposed to emit
1181 the frags/bytes it assembles to. */
1184 md_assemble (char *str)
1189 struct z8k_op operand[3];
1190 opcode_entry_type *opcode;
1192 /* Drop leading whitespace. */
1196 /* Find the op code end. */
1197 for (op_start = op_end = str;
1198 *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end];
1202 if (op_end == op_start)
1204 as_bad (_("can't find opcode "));
1208 *op_end = 0; /* Zero-terminate op code string for hash_find() call. */
1210 opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
1214 as_bad (_("unknown opcode"));
1218 *op_end = c; /* Restore original string. */
1220 if (opcode->opcode == 250)
1224 char *old = input_line_pointer;
1226 /* Was really a pseudo op. */
1228 input_line_pointer = op_end;
1232 while (*input_line_pointer == ' ')
1233 input_line_pointer++;
1234 p = (pseudo_typeS *) (opcode->func);
1236 (p->poc_handler) (p->poc_val);
1237 input_line_pointer = old;
1242 char *new_input_line_pointer;
1244 new_input_line_pointer = get_operands (opcode, op_end, operand);
1245 if (new_input_line_pointer)
1246 input_line_pointer = new_input_line_pointer;
1248 opcode = get_specific (opcode, operand);
1252 /* Couldn't find an opcode which matched the operands. */
1253 char *where = frag_more (2);
1258 as_bad (_("Can't find opcode to match operands"));
1262 build_bytes (opcode, operand);
1267 tc_crawl_symbol_chain (object_headers *headers ATTRIBUTE_UNUSED)
1269 printf (_("call to tc_crawl_symbol_chain \n"));
1272 /* We have no need to default values of symbols. */
1275 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
1281 tc_headers_hook (object_headers *headers ATTRIBUTE_UNUSED)
1283 printf (_("call to tc_headers_hook \n"));
1286 /* Various routines to kill one day. */
1287 /* Equal to MAX_PRECISION in atof-ieee.c. */
1288 #define MAX_LITTLENUMS 6
1290 /* Turn a string in input_line_pointer into a floating point constant
1291 of type TYPE, and store the appropriate bytes in *LITP. The number
1292 of LITTLENUMS emitted is stored in *SIZEP. An error message is
1293 returned, or NULL on OK. */
1296 md_atof (int type, char *litP, int *sizeP)
1299 LITTLENUM_TYPE words[MAX_LITTLENUMS];
1300 LITTLENUM_TYPE *wordP;
1331 return _("Bad call to MD_ATOF()");
1333 t = atof_ieee (input_line_pointer, type, words);
1335 input_line_pointer = t;
1337 *sizeP = prec * sizeof (LITTLENUM_TYPE);
1338 for (wordP = words; prec--;)
1340 md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
1341 litP += sizeof (LITTLENUM_TYPE);
1346 const char *md_shortopts = "z:";
1348 struct option md_longopts[] =
1350 #define OPTION_RELAX (OPTION_MD_BASE)
1351 {"linkrelax", no_argument, NULL, OPTION_RELAX},
1352 {NULL, no_argument, NULL, 0}
1355 size_t md_longopts_size = sizeof (md_longopts);
1358 md_parse_option (int c, char *arg)
1363 if (!strcmp (arg, "8001"))
1365 else if (!strcmp (arg, "8002"))
1369 as_bad (_("invalid architecture -z%s"), arg);
1372 z8k_target_from_cmdline = 1;
1387 md_show_usage (FILE *stream)
1389 fprintf (stream, _("\
1391 -z8001 generate segmented code\n\
1392 -z8002 generate unsegmented code\n\
1393 -linkrelax create linker relaxable code\n"));
1397 md_convert_frag (object_headers *headers ATTRIBUTE_UNUSED,
1398 segT seg ATTRIBUTE_UNUSED,
1399 fragS *fragP ATTRIBUTE_UNUSED)
1401 printf (_("call to md_convert_frag\n"));
1406 md_section_align (segT seg, valueT size)
1408 return ((size + (1 << section_alignment[(int) seg]) - 1)
1409 & (-1 << section_alignment[(int) seg]));
1412 /* Attempt to simplify or eliminate a fixup. To indicate that a fixup
1413 has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL,
1414 we will have to generate a reloc entry. */
1416 md_apply_fix3 (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED)
1418 long val = * (long *) valP;
1419 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
1421 switch (fixP->fx_r_type)
1424 buf[0] = (buf[0] & 0xf0) | (val & 0xf);
1430 fixP->fx_no_overflow = 1;
1436 as_bad (_("cannot branch to odd address"));
1438 if (val > 127 || val < -128)
1439 as_warn (_("relative jump out of range"));
1441 fixP->fx_no_overflow = 1;
1449 fixP->fx_no_overflow = 1;
1455 as_bad (_("cannot branch to odd address"));
1457 if (val > 0 || val < -127)
1458 as_bad (_("relative jump out of range"));
1459 *buf = (*buf & 0x80) | (-val & 0x7f);
1460 fixP->fx_no_overflow = 1;
1468 fixP->fx_no_overflow = 1;
1474 as_bad (_("cannot branch to odd address"));
1475 if (val > 4096 || val < -4095)
1476 as_bad (_("relative call out of range"));
1478 *buf = (*buf & 0xf0) | ((val >> 8) & 0xf);
1480 *buf++ = val & 0xff;
1481 fixP->fx_no_overflow = 1;
1491 *buf++ = (val >> 8);
1496 *buf++ = (val >> 24);
1497 *buf++ = (val >> 16);
1498 *buf++ = (val >> 8);
1503 val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
1504 if (val > 32767 || val < -32768)
1505 as_bad (_("relative address out of range"));
1506 *buf++ = (val >> 8);
1508 fixP->fx_no_overflow = 1;
1513 *buf++ = (val >> 16);
1515 *buf++ = (val >> 8);
1521 md_number_to_chars (buf, val, fixP->fx_size);
1525 printf(_("md_apply_fix3: unknown r_type 0x%x\n"), fixP->fx_r_type);
1529 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
1534 md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
1535 segT segment_type ATTRIBUTE_UNUSED)
1537 printf (_("call to md_estimate_size_before_relax\n"));
1541 /* Put number into target byte order. */
1544 md_number_to_chars (char *ptr, valueT use, int nbytes)
1546 number_to_chars_bigendian (ptr, use, nbytes);
1549 /* On the Z8000, a PC-relative offset is relative to the address of the
1550 instruction plus its size. */
1552 md_pcrel_from (fixS *fixP)
1554 return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
1558 tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED)
1563 tc_reloc_mangle (fixS *fix_ptr, struct internal_reloc *intr, bfd_vma base)
1565 symbolS *symbol_ptr;
1567 if (fix_ptr->fx_addsy
1568 && fix_ptr->fx_subsy)
1570 symbolS *add = fix_ptr->fx_addsy;
1571 symbolS *sub = fix_ptr->fx_subsy;
1573 if (S_GET_SEGMENT (add) != S_GET_SEGMENT (sub))
1574 as_bad (_("Can't subtract symbols in different sections %s %s"),
1575 S_GET_NAME (add), S_GET_NAME (sub));
1578 int diff = S_GET_VALUE (add) - S_GET_VALUE (sub);
1580 fix_ptr->fx_addsy = 0;
1581 fix_ptr->fx_subsy = 0;
1582 fix_ptr->fx_offset += diff;
1585 symbol_ptr = fix_ptr->fx_addsy;
1587 /* If this relocation is attached to a symbol then it's ok
1589 if (fix_ptr->fx_r_type == 0)
1591 /* cons likes to create reloc32's whatever the size of the reloc. */
1592 switch (fix_ptr->fx_size)
1595 intr->r_type = R_IMM16;
1598 intr->r_type = R_IMM8;
1601 intr->r_type = R_IMM32;
1608 intr->r_type = fix_ptr->fx_r_type;
1610 intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
1611 intr->r_offset = fix_ptr->fx_offset;
1614 intr->r_symndx = symbol_ptr->sy_number;
1616 intr->r_symndx = -1;