1 /* tc-z8k.c -- Assemble code for the Zilog Z800n
2 Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003,
3 2005 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, 51 Franklin Street - Fifth Floor, Boston, MA
28 #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;
40 /* This is non-zero if target was set from the command line. */
41 static int z8k_target_from_cmdline;
49 bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8001);
54 bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8002);
59 even (int ignore ATTRIBUTE_UNUSED)
62 record_alignment (now_seg, 1);
76 sval (int ignore ATTRIBUTE_UNUSED)
79 if (*input_line_pointer == '\'')
83 c = *input_line_pointer++;
88 c = (tohex (input_line_pointer[0]) << 4)
89 | tohex (input_line_pointer[1]);
90 input_line_pointer += 2;
92 FRAG_APPEND_1_CHAR (c);
93 c = *input_line_pointer++;
95 demand_empty_rest_of_line ();
99 /* This table describes all the machine specific pseudo-ops the assembler
100 has to support. The fields are:
101 pseudo-op name without dot
102 function to call to execute this pseudo-op
103 Integer arg to pass to the function
106 const pseudo_typeS md_pseudo_table[] = {
108 {"data.b" , cons , 1},
109 {"data.w" , cons , 2},
110 {"data.l" , cons , 4},
111 {"form" , listing_psize , 0},
112 {"heading", listing_title , 0},
113 {"import" , s_ignore , 0},
114 {"page" , listing_eject , 0},
115 {"program", s_ignore , 0},
116 {"z8001" , s_segm , 1},
117 {"z8002" , s_segm , 0},
119 {"segm" , s_segm , 1},
120 {"unsegm" , s_segm , 0},
121 {"unseg" , s_segm , 0},
122 {"name" , s_app_file , 0},
123 {"global" , s_globl , 0},
128 {"rsect" , obj_coff_section, 0},
129 {"sect" , obj_coff_section, 0},
130 {"block" , s_space , 0},
135 const char EXP_CHARS[] = "eE";
137 /* Chars that mean this number is a floating point constant.
140 const char FLT_CHARS[] = "rRsSfFdDxXpP";
142 /* Opcode mnemonics. */
143 static struct hash_control *opcode_hash_control;
148 const opcode_entry_type *opcode;
151 opcode_hash_control = hash_new ();
153 for (opcode = z8k_table; opcode->name; opcode++)
155 /* Only enter unique codes into the table. */
156 if (idx != opcode->idx)
157 hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
161 /* Default to z8002. */
162 if (! z8k_target_from_cmdline)
165 /* Insert the pseudo ops, too. */
166 for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
168 opcode_entry_type *fake_opcode;
169 fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
170 fake_opcode->name = md_pseudo_table[idx].poc_name;
171 fake_opcode->func = (void *) (md_pseudo_table + idx);
172 fake_opcode->opcode = 250;
173 hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
177 typedef struct z8k_op {
186 /* Any other register associated with the mode. */
189 /* Any expression. */
193 static expressionS *da_operand;
194 static expressionS *imm_operand;
199 static int the_flags;
200 static int the_interrupt;
203 whatreg (unsigned int *reg, char *src)
205 if (ISDIGIT (src[1]))
207 *reg = (src[0] - '0') * 10 + src[1] - '0';
212 *reg = (src[0] - '0');
223 WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
231 /* Try to parse a reg name. Return a pointer to the first character
232 in SRC after the reg name. */
235 parse_reg (char *src, int *mode, unsigned int *reg)
240 /* Check for stack pointer "sp" alias. */
241 if ((src[0] == 's' || src[0] == 'S')
242 && (src[1] == 'p' || src[1] == 'P')
243 && (src[2] == 0 || src[2] == ','))
247 *mode = CLASS_REG_LONG;
252 *mode = CLASS_REG_WORD;
258 if (src[0] == 'r' || src[0] == 'R')
260 if (src[1] == 'r' || src[1] == 'R')
262 if (src[2] < '0' || src[2] > '9')
263 return res; /* Assume no register name but a label starting with 'rr'. */
264 *mode = CLASS_REG_LONG;
265 res = whatreg (reg, src + 2);
268 as_bad (_("register rr%d out of range"), regno);
270 as_bad (_("register rr%d does not exist"), regno);
272 else if (src[1] == 'h' || src[1] == 'H')
274 if (src[2] < '0' || src[2] > '9')
275 return res; /* Assume no register name but a label starting with 'rh'. */
276 *mode = CLASS_REG_BYTE;
277 res = whatreg (reg, src + 2);
280 as_bad (_("register rh%d out of range"), regno);
282 else if (src[1] == 'l' || src[1] == 'L')
284 if (src[2] < '0' || src[2] > '9')
285 return res; /* Assume no register name but a label starting with 'rl'. */
286 *mode = CLASS_REG_BYTE;
287 res = whatreg (reg, src + 2);
290 as_bad (_("register rl%d out of range"), regno);
293 else if (src[1] == 'q' || src[1] == 'Q')
295 if (src[2] < '0' || src[2] > '9')
296 return res; /* Assume no register name but a label starting with 'rq'. */
297 *mode = CLASS_REG_QUAD;
298 res = whatreg (reg, src + 2);
301 as_bad (_("register rq%d out of range"), regno);
303 as_bad (_("register rq%d does not exist"), regno);
307 if (src[1] < '0' || src[1] > '9')
308 return res; /* Assume no register name but a label starting with 'r'. */
309 *mode = CLASS_REG_WORD;
310 res = whatreg (reg, src + 1);
313 as_bad (_("register r%d out of range"), regno);
320 parse_exp (char *s, expressionS *op)
322 char *save = input_line_pointer;
325 input_line_pointer = s;
327 if (op->X_op == O_absent)
328 as_bad (_("missing operand"));
329 new = input_line_pointer;
330 input_line_pointer = save;
334 /* The many forms of operand:
349 checkfor (char *ptr, char what)
354 as_bad (_("expected %c"), what);
359 /* Make sure the mode supplied is the size of a word. */
362 regword (int mode, char *string)
369 as_bad (_("register is wrong size for a word %s"), string);
373 /* Make sure the mode supplied is the size of an address. */
376 regaddr (int mode, char *string)
380 ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
383 as_bad (_("register is wrong size for address %s"), string);
392 static struct ctrl_names ctrl_table[] = {
393 { 0x1, "flags" }, /* ldctlb only. */
394 { 0x2, "fcw" }, /* ldctl only. Applies to all remaining control registers. */
406 get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
414 mode->mode = CLASS_CTRL;
415 for (i = 0; ctrl_table[i].name; i++)
417 l = strlen (ctrl_table[i].name);
418 if (! strncasecmp (ctrl_table[i].name, src, l))
420 the_ctrl = ctrl_table[i].value;
421 if (*(src + l) && *(src + l) != ',')
423 *ptr = src + l; /* Valid control name found: "consume" it. */
435 static struct flag_names flag_table[] = {
447 get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
457 mode->mode = CLASS_FLAGS;
459 for (j = 0; j <= 9; j++)
464 for (i = 0; flag_table[i].name; i++)
466 if (flag_table[i].name[0] == c)
468 the_flags = the_flags | flag_table[i].value;
480 struct interrupt_names {
485 static struct interrupt_names intr_table[] = {
494 get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
502 mode->mode = CLASS_IMM;
507 for (i = 0; intr_table[i].name; i++)
509 l = strlen (intr_table[i].name);
510 if (! strncasecmp (intr_table[i].name, src, l))
512 the_interrupt |= intr_table[i].value;
513 if (*(src + l) && *(src + l) != ',')
517 as_bad (_("unknown interrupt %s"), src);
518 while (**ptr && ! is_end_of_line[(unsigned char) **ptr])
519 (*ptr)++; /* Consume rest of line. */
539 /* No interrupt type specified, opcode won't do anything. */
540 as_warn (_("opcode has no effect"));
549 static struct cc_names table[] = {
584 get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
592 mode->mode = CLASS_CC;
593 for (i = 0; table[i].name; i++)
595 l = strlen (table[i].name);
596 if (! strncasecmp (table[i].name, src, l))
598 the_cc = table[i].value;
599 if (*(src + l) && *(src + l) != ',')
601 *ptr = src + l; /* Valid cc found: "consume" it. */
605 the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */
609 get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
620 mode->mode = CLASS_IMM;
621 imm_operand = &(mode->exp);
622 src = parse_exp (src + 1, &(mode->exp));
624 else if (*src == '@')
626 mode->mode = CLASS_IR;
627 src = parse_reg (src + 1, &mode->regsize, &mode->reg);
633 end = parse_reg (src, &mode->mode, ®n);
644 end = parse_reg (src, &nw, &nr);
651 as_bad (_("Missing ) in ra(rb)"));
655 regaddr (mode->mode, "ra(rb) ra");
656 mode->mode = CLASS_BX;
666 src = parse_exp (src, &(mode->exp));
667 src = checkfor (src, ')');
668 mode->mode = CLASS_BA;
671 imm_operand = &(mode->exp);
682 /* No initial reg. */
683 src = parse_exp (src, &(mode->exp));
687 end = parse_reg (src, &(mode->mode), ®n);
688 regword (mode->mode, "addr(Ra) ra");
689 mode->mode = CLASS_X;
692 da_operand = &(mode->exp);
693 src = checkfor (end, ')');
697 /* Just an address. */
698 mode->mode = CLASS_DA;
701 da_operand = &(mode->exp);
709 get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand)
714 switch (opcode->noperands)
724 if (opcode->arg_info[0] == CLASS_CC)
726 get_cc_operand (&ptr, operand + 0, 0);
729 if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
731 as_bad (_("invalid condition code '%s'"), ptr);
732 while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
733 ptr++; /* Consume rest of line. */
736 else if (opcode->arg_info[0] == CLASS_FLAGS)
738 get_flags_operand (&ptr, operand + 0, 0);
741 if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
743 as_bad (_("invalid flag '%s'"), ptr);
744 while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
745 ptr++; /* Consume rest of line. */
748 else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
749 get_interrupt_operand (&ptr, operand + 0, 0);
751 get_operand (&ptr, operand + 0, 0);
758 if (opcode->arg_info[0] == CLASS_CC)
760 get_cc_operand (&ptr, operand + 0, 0);
763 if (*ptr != ',' && strchr (ptr + 1, ','))
770 as_bad (_("invalid condition code '%s'"), savptr);
773 else if (opcode->arg_info[0] == CLASS_CTRL)
775 get_ctrl_operand (&ptr, operand + 0, 0);
780 get_operand (&ptr, operand + 0, 0);
786 get_ctrl_operand (&ptr, operand + 1, 1);
793 get_operand (&ptr, operand + 0, 0);
799 get_operand (&ptr, operand + 1, 1);
803 get_operand (&ptr, operand + 0, 0);
806 get_operand (&ptr, operand + 1, 1);
809 get_operand (&ptr, operand + 2, 2);
813 get_operand (&ptr, operand + 0, 0);
816 get_operand (&ptr, operand + 1, 1);
819 get_operand (&ptr, operand + 2, 2);
822 get_cc_operand (&ptr, operand + 3, 3);
832 /* Passed a pointer to a list of opcodes which use different
833 addressing modes. Return the opcode which matches the opcodes
836 static opcode_entry_type *
837 get_specific (opcode_entry_type *opcode, op_type *operands)
839 opcode_entry_type *this_try = opcode;
841 unsigned int noperands = opcode->noperands;
843 int this_index = opcode->idx;
845 while (this_index == opcode->idx && !found)
850 for (i = 0; i < noperands; i++)
852 unsigned int mode = operands[i].mode;
854 if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO))
856 mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO;
859 if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
861 /* It could be a pc rel operand, if this is a da mode
862 and we like disps, then insert it. */
864 if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
866 /* This is the case. */
867 operands[i].mode = CLASS_DISP;
869 else if (mode == CLASS_BA && this_try->arg_info[i])
871 /* Can't think of a way to turn what we've been
872 given into something that's OK. */
875 else if (this_try->arg_info[i] & CLASS_PR)
877 if (mode == CLASS_REG_LONG && segmented_mode)
881 else if (mode == CLASS_REG_WORD && !segmented_mode)
891 switch (mode & CLASS_MASK)
896 if (operands[i].regsize != CLASS_REG_WORD)
897 as_bad (_("invalid indirect register size"));
898 reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
901 if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG)
902 || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD))
903 as_bad (_("invalid indirect register size"));
904 reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
916 reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
919 if (this_try->opcode == OPC_ldctlb && the_ctrl != 1)
920 as_bad (_("invalid control register name"));
935 static char buffer[20];
938 newfix (int ptr, int type, int size, expressionS *operand)
943 /* Size is in nibbles. */
944 if (operand->X_add_symbol
945 || operand->X_op_symbol
946 || operand->X_add_number)
950 case BFD_RELOC_8_PCREL:
951 case BFD_RELOC_Z8K_CALLR:
952 case BFD_RELOC_Z8K_DISP7:
955 fixP = fix_new_exp (frag_now, ptr, size / 2,
956 operand, is_pcrel, type);
958 fixP->fx_no_overflow = 1;
963 apply_fix (char *ptr, int type, expressionS *operand, int size)
965 long n = operand->X_add_number;
967 /* size is in nibbles. */
969 newfix ((ptr - buffer) / 2, type, size + 1, operand);
972 case 8: /* 8 nibbles == 32 bits. */
977 case 4: /* 4 nibbles == 16 bits. */
989 /* Now we know what sort of opcodes it is. Let's build the bytes. */
992 build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED)
994 char *output_ptr = buffer;
997 unsigned int *class_ptr;
999 frag_wane (frag_now);
1002 if (frag_room () < 8)
1003 frag_grow (8); /* Make room for maximum instruction size. */
1005 memset (buffer, 0, sizeof (buffer));
1006 class_ptr = this_try->byte_info;
1008 for (nibble = 0; (c = *class_ptr++); nibble++)
1011 switch (c & CLASS_MASK)
1017 /* Direct address, we don't cope with the SS mode right now. */
1020 /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
1021 output_ptr = apply_fix (output_ptr, BFD_RELOC_32, da_operand, 8);
1025 output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4);
1031 output_ptr = apply_fix (output_ptr, BFD_RELOC_8_PCREL, da_operand, 2);
1038 output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2);
1045 output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2);
1046 output_ptr[-2] = 0x8;
1050 case CLASS_BIT_1OR2:
1051 *output_ptr = c & 0xf;
1054 if (imm_operand->X_add_number == 2)
1056 else if (imm_operand->X_add_number != 1)
1057 as_bad (_("immediate must be 1 or 2"));
1060 as_bad (_("immediate 1 or 2 expected"));
1064 *output_ptr++ = the_cc;
1067 if (the_ctrl < 2 || the_ctrl > 7)
1068 as_bad (_("invalid control register name"));
1069 *output_ptr++ = the_ctrl;
1072 if (the_ctrl < 2 || the_ctrl > 7)
1073 as_bad (_("invalid control register name"));
1074 *output_ptr++ = the_ctrl | 0x8;
1077 *output_ptr++ = (~the_interrupt & 0x3);
1080 *output_ptr++ = (~the_interrupt & 0x3) | 0x4;
1083 *output_ptr++ = the_flags;
1087 *output_ptr++ = c & 0xf;
1090 if (reg[c & 0xf] == 0)
1091 as_bad (_("can't use R0 here"));
1094 case CLASS_REG_BYTE:
1095 case CLASS_REG_WORD:
1096 case CLASS_REG_LONG:
1097 case CLASS_REG_QUAD:
1098 /* Insert bit mattern of right reg. */
1099 *output_ptr++ = reg[c & 0xf];
1102 switch (c & ARG_MASK)
1105 output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_CALLR, da_operand, 4);
1108 output_ptr = apply_fix (output_ptr, BFD_RELOC_16_PCREL, da_operand, 4);
1111 output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4);
1118 switch (c & ARG_MASK)
1121 if (imm_operand->X_add_number > 15)
1122 as_bad (_("immediate value out of range"));
1123 imm_operand->X_add_number = -imm_operand->X_add_number;
1124 output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
1126 /*case ARG_IMMNMINUS1: not used. */
1128 imm_operand->X_add_number--;
1131 if (imm_operand->X_add_number > 15)
1132 as_bad (_("immediate value out of range"));
1133 output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
1136 imm_operand->X_add_number = -imm_operand->X_add_number;
1139 output_ptr = apply_fix (output_ptr, BFD_RELOC_8, imm_operand, 2);
1142 output_ptr = apply_fix (output_ptr, BFD_RELOC_16, imm_operand, 4);
1145 output_ptr = apply_fix (output_ptr, BFD_RELOC_32, imm_operand, 8);
1154 /* Copy from the nibble buffer into the frag. */
1156 int length = (output_ptr - buffer) / 2;
1158 char *fragp = frag_more (length);
1160 while (src < output_ptr)
1162 *fragp = (src[0] << 4) | src[1];
1169 /* This is the guts of the machine-dependent assembler. STR points to a
1170 machine dependent instruction. This function is supposed to emit
1171 the frags/bytes it assembles to. */
1174 md_assemble (char *str)
1179 struct z8k_op operand[4];
1180 opcode_entry_type *opcode;
1182 /* Drop leading whitespace. */
1186 /* Find the op code end. */
1187 for (op_start = op_end = str;
1188 *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end];
1192 if (op_end == op_start)
1194 as_bad (_("can't find opcode "));
1198 *op_end = 0; /* Zero-terminate op code string for hash_find() call. */
1200 opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
1204 as_bad (_("unknown opcode"));
1208 *op_end = c; /* Restore original string. */
1210 if (opcode->opcode == 250)
1214 char *old = input_line_pointer;
1216 /* Was really a pseudo op. */
1218 input_line_pointer = op_end;
1222 while (*input_line_pointer == ' ')
1223 input_line_pointer++;
1224 p = (pseudo_typeS *) (opcode->func);
1226 (p->poc_handler) (p->poc_val);
1227 input_line_pointer = old;
1232 char *new_input_line_pointer;
1234 new_input_line_pointer = get_operands (opcode, op_end, operand);
1235 if (new_input_line_pointer)
1237 input_line_pointer = new_input_line_pointer;
1238 opcode = get_specific (opcode, operand);
1241 if (new_input_line_pointer == NULL || opcode == NULL)
1243 /* Couldn't find an opcode which matched the operands. */
1244 char *where = frag_more (2);
1249 as_bad (_("Can't find opcode to match operands"));
1253 build_bytes (opcode, operand);
1257 /* We have no need to default values of symbols. */
1260 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
1265 /* Various routines to kill one day. */
1266 /* Equal to MAX_PRECISION in atof-ieee.c. */
1267 #define MAX_LITTLENUMS 6
1269 /* Turn a string in input_line_pointer into a floating point constant
1270 of type TYPE, and store the appropriate bytes in *LITP. The number
1271 of LITTLENUMS emitted is stored in *SIZEP. An error message is
1272 returned, or NULL on OK. */
1275 md_atof (int type, char *litP, int *sizeP)
1278 LITTLENUM_TYPE words[MAX_LITTLENUMS];
1279 LITTLENUM_TYPE *wordP;
1310 return _("Bad call to MD_ATOF()");
1312 t = atof_ieee (input_line_pointer, type, words);
1314 input_line_pointer = t;
1316 *sizeP = prec * sizeof (LITTLENUM_TYPE);
1317 for (wordP = words; prec--;)
1319 md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
1320 litP += sizeof (LITTLENUM_TYPE);
1325 const char *md_shortopts = "z:";
1327 struct option md_longopts[] =
1329 #define OPTION_RELAX (OPTION_MD_BASE)
1330 {"linkrelax", no_argument, NULL, OPTION_RELAX},
1331 {NULL, no_argument, NULL, 0}
1334 size_t md_longopts_size = sizeof (md_longopts);
1337 md_parse_option (int c, char *arg)
1342 if (!strcmp (arg, "8001"))
1344 else if (!strcmp (arg, "8002"))
1348 as_bad (_("invalid architecture -z%s"), arg);
1351 z8k_target_from_cmdline = 1;
1366 md_show_usage (FILE *stream)
1368 fprintf (stream, _("\
1370 -z8001 generate segmented code\n\
1371 -z8002 generate unsegmented code\n\
1372 -linkrelax create linker relaxable code\n"));
1376 md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
1377 segT sec ATTRIBUTE_UNUSED,
1378 fragS *fragP ATTRIBUTE_UNUSED)
1380 printf (_("call to md_convert_frag\n"));
1384 /* Generate a machine dependent reloc from a fixup. */
1387 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
1388 fixS *fixp ATTRIBUTE_UNUSED)
1392 reloc = xmalloc (sizeof (*reloc));
1393 reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
1394 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
1395 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1396 reloc->addend = fixp->fx_offset;
1397 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
1401 as_bad_where (fixp->fx_file, fixp->fx_line,
1402 "Cannot represent %s relocation in object file",
1403 bfd_get_reloc_code_name (fixp->fx_r_type));
1410 md_section_align (segT seg, valueT size)
1412 int align = bfd_get_section_alignment (stdoutput, seg);
1413 valueT mask = ((valueT) 1 << align) - 1;
1415 return (size + mask) & ~mask;
1418 /* Attempt to simplify or eliminate a fixup. To indicate that a fixup
1419 has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL,
1420 we will have to generate a reloc entry. */
1422 md_apply_fix (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED)
1424 long val = * (long *) valP;
1425 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
1427 switch (fixP->fx_r_type)
1429 case BFD_RELOC_Z8K_IMM4L:
1432 fixP->fx_no_overflow = 1;
1436 buf[0] = (buf[0] & 0xf0) | (val & 0xf);
1442 fixP->fx_no_overflow = 1;
1452 fixP->fx_no_overflow = 1;
1457 *buf++ = (val >> 8);
1465 fixP->fx_no_overflow = 1;
1470 *buf++ = (val >> 24);
1471 *buf++ = (val >> 16);
1472 *buf++ = (val >> 8);
1477 case BFD_RELOC_8_PCREL:
1480 fixP->fx_no_overflow = 1;
1486 as_bad_where (fixP->fx_file, fixP->fx_line,
1487 _("cannot branch to odd address"));
1489 if (val > 127 || val < -128)
1490 as_bad_where (fixP->fx_file, fixP->fx_line,
1491 _("relative jump out of range"));
1493 fixP->fx_no_overflow = 1;
1498 case BFD_RELOC_16_PCREL:
1501 fixP->fx_no_overflow = 1;
1506 val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
1507 if (val > 32767 || val < -32768)
1508 as_bad_where (fixP->fx_file, fixP->fx_line,
1509 _("relative address out of range"));
1510 *buf++ = (val >> 8);
1512 fixP->fx_no_overflow = 1;
1517 case BFD_RELOC_Z8K_CALLR:
1520 fixP->fx_no_overflow = 1;
1526 as_bad_where (fixP->fx_file, fixP->fx_line,
1527 _("cannot branch to odd address"));
1528 if (val > 4096 || val < -4095)
1529 as_bad_where (fixP->fx_file, fixP->fx_line,
1530 _("relative call out of range"));
1532 *buf = (*buf & 0xf0) | ((val >> 8) & 0xf);
1534 *buf++ = val & 0xff;
1535 fixP->fx_no_overflow = 1;
1540 case BFD_RELOC_Z8K_DISP7:
1543 fixP->fx_no_overflow = 1;
1549 as_bad_where (fixP->fx_file, fixP->fx_line,
1550 _("cannot branch to odd address"));
1552 if (val > 0 || val < -127)
1553 as_bad_where (fixP->fx_file, fixP->fx_line,
1554 _("relative jump out of range"));
1555 *buf = (*buf & 0x80) | (-val & 0x7f);
1556 fixP->fx_no_overflow = 1;
1562 printf(_("md_apply_fix: unknown r_type 0x%x\n"), fixP->fx_r_type);
1566 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
1571 md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
1572 segT segment_type ATTRIBUTE_UNUSED)
1574 printf (_("call to md_estimate_size_before_relax\n"));
1578 /* Put number into target byte order. */
1581 md_number_to_chars (char *ptr, valueT use, int nbytes)
1583 number_to_chars_bigendian (ptr, use, nbytes);
1586 /* On the Z8000, a PC-relative offset is relative to the address of the
1587 instruction plus its size. */
1589 md_pcrel_from (fixS *fixP)
1591 return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
1595 tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED)