1 /* tc-dlx.c -- Assemble for the DLX
2 Copyright (C) 2002-2018 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 /* Initially created by Kuang Hwa Lin, 3/20/2002. */
24 #include "safe-ctype.h"
26 #include "opcode/dlx.h"
28 #include "bfd/elf32-dlx.h"
30 /* Make it easier to clone this machine desc into another one. */
31 #define machine_opcode dlx_opcode
32 #define machine_opcodes dlx_opcodes
33 #define machine_ip dlx_ip
34 #define machine_it dlx_it
36 #define NO_RELOC BFD_RELOC_NONE
37 #define RELOC_DLX_REL26 BFD_RELOC_DLX_JMP26
38 #define RELOC_DLX_16 BFD_RELOC_16
39 #define RELOC_DLX_REL16 BFD_RELOC_16_PCREL_S2
40 #define RELOC_DLX_HI16 BFD_RELOC_HI16_S
41 #define RELOC_DLX_LO16 BFD_RELOC_LO16
42 #define RELOC_DLX_VTINHERIT BFD_RELOC_VTABLE_INHERIT
43 #define RELOC_DLX_VTENTRY BFD_RELOC_VTABLE_ENTRY
45 /* handle of the OPCODE hash table */
46 static struct hash_control *op_hash = NULL;
56 int reloc_offset; /* Offset of reloc within insn. */
57 bfd_reloc_code_real_type reloc;
63 /* This array holds the chars that always start a comment. If the
64 pre-processor is disabled, these aren't very useful. */
65 const char comment_chars[] = ";";
67 /* This array holds the chars that only start a comment at the beginning of
68 a line. If the line seems to have the form '# 123 filename'
69 .line and .file directives will appear in the pre-processed output. */
70 /* Note that input_file.c hand checks for '#' at the beginning of the
71 first line of the input file. This is because the compiler outputs
72 #NO_APP at the beginning of its output. */
73 /* Also note that comments like this one will always work. */
74 const char line_comment_chars[] = "#";
76 /* We needed an unused char for line separation to work around the
77 lack of macros, using sed and such. */
78 const char line_separator_chars[] = "@";
80 /* Chars that can be used to separate mant from exp in floating point nums. */
81 const char EXP_CHARS[] = "eE";
83 /* Chars that mean this number is a floating point constant.
86 const char FLT_CHARS[] = "rRsSfFdDxXpP";
89 insert_sreg (const char *regname, int regnum)
91 /* Must be large enough to hold the names of the special registers. */
95 symbol_table_insert (symbol_new (regname, reg_section, (valueT) regnum,
97 for (i = 0; regname[i]; i++)
98 buf[i] = ISLOWER (regname[i]) ? TOUPPER (regname[i]) : regname[i];
101 symbol_table_insert (symbol_new (buf, reg_section, (valueT) regnum,
102 &zero_address_frag));
105 /* Install symbol definitions for assorted special registers.
106 See MIPS Assembly Language Programmer's Guide page 1-4 */
109 define_some_regs (void)
111 /* Software representation. */
112 insert_sreg ("zero", 0);
113 insert_sreg ("at", 1);
114 insert_sreg ("v0", 2);
115 insert_sreg ("v1", 3);
116 insert_sreg ("a0", 4);
117 insert_sreg ("a1", 5);
118 insert_sreg ("a2", 6);
119 insert_sreg ("a3", 7);
120 insert_sreg ("t0", 8);
121 insert_sreg ("t1", 9);
122 insert_sreg ("t2", 10);
123 insert_sreg ("t3", 11);
124 insert_sreg ("t4", 12);
125 insert_sreg ("t5", 13);
126 insert_sreg ("t6", 14);
127 insert_sreg ("t7", 15);
128 insert_sreg ("s0", 16);
129 insert_sreg ("s1", 17);
130 insert_sreg ("s2", 18);
131 insert_sreg ("s3", 19);
132 insert_sreg ("s4", 20);
133 insert_sreg ("s5", 21);
134 insert_sreg ("s6", 22);
135 insert_sreg ("s7", 23);
136 insert_sreg ("t8", 24);
137 insert_sreg ("t9", 25);
138 insert_sreg ("k0", 26);
139 insert_sreg ("k1", 27);
140 insert_sreg ("gp", 28);
141 insert_sreg ("sp", 29);
142 insert_sreg ("fp", 30);
143 insert_sreg ("ra", 31);
144 /* Special registers. */
145 insert_sreg ("pc", 0);
146 insert_sreg ("npc", 1);
147 insert_sreg ("iad", 2);
150 /* Subroutine check the string to match an register. */
153 match_sft_register (char *name)
155 #define MAX_REG_NO 35
156 /* Currently we have 35 software registers defined -
157 we borrowed from MIPS. */
158 static const char *soft_reg[] =
160 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
161 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9",
162 "s0", "s1", "s2", "s3", "s4", "s5", "s7", "k0", "k1",
163 "gp", "sp", "fp", "ra", "pc", "npc", "iad",
164 "EndofTab" /* End of the Table indicator */
166 char low_name[21], *ptr;
169 for (ptr = name,idx = 0; *ptr != '\0'; ptr++)
170 low_name[idx++] = TOLOWER (*ptr);
172 low_name[idx] = '\0';
175 while (idx < MAX_REG_NO && strcmp (soft_reg[idx], & low_name [0]))
178 return idx < MAX_REG_NO;
181 /* Subroutine check the string to match an register. */
184 is_ldst_registers (char *name)
188 /* The first character of the register name got to be either %, $, r of R. */
189 if ((ptr[0] == '%' || ptr[0] == '$' || ptr[0] == 'r' || ptr[0] == 'R')
190 && ISDIGIT ((unsigned char) ptr[1]))
193 /* Now check the software register representation. */
194 return match_sft_register (ptr);
197 /* Subroutine of s_proc so targets can choose a different default prefix.
198 If DEFAULT_PREFIX is NULL, use the target's "leading char". */
203 /* Record the current function so that we can issue an error message for
204 misplaced .func,.endfunc, and also so that .endfunc needs no
206 static char *current_name;
207 static char *current_label;
211 if (current_name == NULL)
213 as_bad (_("missing .proc"));
214 ignore_rest_of_line ();
218 current_name = current_label = NULL;
220 while (!is_end_of_line[(unsigned char) *input_line_pointer])
221 input_line_pointer++;
228 if (current_name != NULL)
230 as_bad (_(".endfunc missing for previous .proc"));
231 ignore_rest_of_line ();
235 delim1 = get_symbol_name (&name);
236 name = xstrdup (name);
237 *input_line_pointer = delim1;
238 SKIP_WHITESPACE_AFTER_NAME ();
240 if (*input_line_pointer != ',')
242 char leading_char = 0;
244 leading_char = bfd_get_symbol_leading_char (stdoutput);
245 /* Missing entry point, use function's name with the leading
249 unsigned len = strlen (name) + 1;
250 label = XNEWVEC (char, len + 1);
251 label[0] = leading_char;
252 memcpy (label + 1, name, len);
259 ++input_line_pointer;
261 delim2 = get_symbol_name (&label);
262 label = xstrdup (label);
263 (void) restore_line_pointer (delim2);
267 current_label = label;
269 demand_empty_rest_of_line ();
272 /* This function is called once, at assembler startup time. It should
273 set up all the tables, etc., that the MD part of the assembler will
279 const char *retval = NULL;
283 /* Create a new hash table. */
284 op_hash = hash_new ();
286 /* Hash up all the opcodes for fast use later. */
287 for (i = 0; i < num_dlx_opcodes; i++)
289 const char *name = machine_opcodes[i].name;
291 retval = hash_insert (op_hash, name, (void *) &machine_opcodes[i]);
295 fprintf (stderr, _("internal error: can't hash `%s': %s\n"),
296 machine_opcodes[i].name, retval);
302 as_fatal (_("Broken assembler. No assembly attempted."));
307 /* This function will check the opcode and return 1 if the opcode is one
308 of the load/store instruction, and it will fix the operand string to
309 the standard form so we can use the standard parse_operand routine. */
311 #define READ_OP 0x100
312 #define WRITE_OP 0x200
313 static char iBuf[81];
316 dlx_parse_loadop (char * str)
321 /* The last pair of ()/[] is the register, all other are the
322 reloc displacement, and if there is a register then it ought
323 to have a pair of ()/[]
324 This is not necessarily true, what if the load instruction come
325 without the register and with %hi/%lo modifier? */
326 for (idx = 0; idx < 72 && ptr[idx] != '\0'; idx++)
332 as_bad (_("Bad operand for a load instruction: <%s>"), str);
339 char rs1[7], rd[7], endm, match = '0';
354 /* No register indicated, fill in zero. */
365 /* Searching for (/[ which will match the ]/). */
366 for (pb = idx - 1; str[pb] != match; pb -= 1)
367 /* Match can only be either '[' or '(', if it is
368 '(' then this can be a normal expression, we'll treat
370 if (str[pb] == endm || pb < (idx - 5))
374 for (i = 0; (pb + i) < idx; i++)
379 if (is_ldst_registers (& rs1[0]))
380 /* Point to the last character of the imm. */
386 goto badoperand_load;
387 /* No register indicated, fill in zero and restore the imm. */
395 /* Duplicate the first register. */
396 for (i = 0; i < 7 && str[i] != ','; i++)
400 goto badoperand_load;
406 /* Put the '\0' back in. */
409 for (i++, m2 = 0; i < pb; m2++,i++)
414 /* Assemble the instruction to gas internal format. */
415 for (i = 0; rd[i] != '\0'; i++)
420 for (pb = 0 ; rs1[pb] != '\0'; i++, pb++)
425 for (pb = 0; imm[pb] != '\0'; i++, pb++)
434 dlx_parse_storeop (char * str)
439 /* Search for the ','. */
440 for (idx = 0; idx < 72 && ptr[idx] != ','; idx++)
446 as_bad (_("Bad operand for a store instruction: <%s>"), str);
451 /* idx now points to the ','. */
455 char rs1[7], rd[7], endm, match = '0';
458 /* Now parse the '(' and ')', and make idx point to ')'. */
471 /* No register indicated, fill in zero. */
482 /* Searching for (/[ which will match the ]/). */
483 for (pb = idx - 1; str[pb] != match; pb -= 1)
484 if (pb < (idx - 5) || str[pb] == endm)
488 for (i = 0; (pb + i) < idx; i++)
489 rs1[i] = str[pb + i];
493 if (is_ldst_registers (& rs1[0]))
494 /* Point to the last character of the imm. */
500 goto badoperand_store;
502 /* No register indicated, fill in zero and restore the imm. */
510 /* No register was specified. */
513 /* Duplicate the first register. */
514 for (i = comma + 1; (str[i] == ' ' || str[i] == '\t'); i++)
517 for (m2 = 0; (m2 < 7 && str[i] != '\0'); i++, m2++)
519 if (str[i] != ' ' && str[i] != '\t')
522 goto badoperand_store;
526 goto badoperand_store;
531 for (i = 0; i < pb; i++)
536 /* Assemble the instruction to gas internal format. */
537 for (i = 0; rd[i] != '\0'; i++)
540 for (pb = 0 ; rs1[pb] != '\0'; i++, pb++)
543 for (pb = 0; imm[pb] != '\0'; i++, pb++)
551 fix_ld_st_operand (unsigned long opcode, char* str)
553 /* Check the opcode. */
554 switch ((int) opcode)
564 return dlx_parse_loadop (str);
568 return dlx_parse_storeop (str);
575 hilo_modifier_ok (char *s)
583 for (idx = 1; ptr[idx] != '\0' && ptr[idx] != '[' && idx < 73; idx += 1)
595 return (count == 0) ? 1:0;
599 parse_operand (char *s, expressionS *operandp)
601 char *save = input_line_pointer;
604 the_insn.HI = the_insn.LO = 0;
606 /* Search for %hi and %lo, make a mark and skip it. */
607 if (strncmp (s, "%hi", 3) == 0)
614 if (strncmp (s, "%lo", 3) == 0)
623 if (the_insn.HI || the_insn.LO)
625 if (!hilo_modifier_ok (s))
626 as_bad (_("Expression Error for operand modifier %%hi/%%lo\n"));
629 /* Check for the % and $ register representation */
630 if ((s[0] == '%' || s[0] == '$' || s[0] == 'r' || s[0] == 'R')
631 && ISDIGIT ((unsigned char) s[1]))
633 /* We have a numeric register expression. No biggy. */
635 input_line_pointer = s;
636 (void) expression (operandp);
637 if (operandp->X_op != O_constant
638 || operandp->X_add_number > 31)
639 as_bad (_("Invalid expression after %%%%\n"));
640 operandp->X_op = O_register;
644 /* Normal operand parsing. */
645 input_line_pointer = s;
646 (void) expression (operandp);
649 new_pos = input_line_pointer;
650 input_line_pointer = save;
654 /* Instruction parsing. Takes a string containing the opcode.
655 Operands are at input_line_pointer. Output is in the_insn.
656 Warnings or errors are generated. */
659 machine_ip (char *str)
663 struct machine_opcode *insn;
664 unsigned long opcode;
665 expressionS the_operand;
666 expressionS *operand = &the_operand;
667 unsigned int reg, reg_shift = 0;
669 memset (&the_insn, '\0', sizeof (the_insn));
670 the_insn.reloc = NO_RELOC;
672 /* Fixup the opcode string to all lower cases, and also
673 allow numerical digits. */
677 for (; ISALNUM (*s); ++s)
686 /* FIXME-SOMEDAY more whitespace. */
692 as_bad (_("Unknown opcode: `%s'"), str);
696 /* Hash the opcode, insn will have the string from opcode table. */
697 if ((insn = (struct machine_opcode *) hash_find (op_hash, str)) == NULL)
699 /* Handle the ret and return macro here. */
700 if ((strcmp (str, "ret") == 0) || (strcmp (str, "return") == 0))
701 the_insn.opcode = JROP | 0x03e00000; /* 0x03e00000 = r31 << 21 */
703 as_bad (_("Unknown opcode `%s'."), str);
708 opcode = insn->opcode;
710 /* Set the sip reloc HI16 flag. */
711 if (!set_dlx_skip_hi16_flag (1))
712 as_bad (_("Can not set dlx_skip_hi16_flag"));
714 /* Fix the operand string if it is one of load store instructions. */
715 s = fix_ld_st_operand (opcode, s);
717 /* Build the opcode, checking as we go to make sure that the
719 If an operand matches, we modify the_insn or opcode appropriately,
720 and do a "continue". If an operand fails to match, we "break". */
721 if (insn->args[0] != '\0' && insn->args[0] != 'N')
723 /* Prime the pump. */
726 as_bad (_("Missing arguments for opcode <%s>."), str);
730 s = parse_operand (s, operand);
732 else if (insn->args[0] == 'N')
734 /* Clean up the insn and done! */
735 the_insn.opcode = opcode;
739 /* Parse through the args (this is from opcode table), *s point to
740 the current character of the instruction stream. */
741 for (args = insn->args;; ++args)
750 /* We are truly done. */
751 the_insn.opcode = opcode;
752 /* Clean up the HI and LO mark. */
760 as_bad (_("Too many operands: %s"), s);
763 /* ',' Args separator */
765 /* Must match a comma. */
768 /* Parse next operand. */
769 s = parse_operand (s, operand);
774 /* It can be a 'a' register or 'i' operand. */
776 /* Macro move operand/reg. */
777 if (operand->X_op == O_register)
779 /* It's a register. */
785 /* The immediate 16 bits literal, bit 0-15. */
787 /* offset, unsigned. */
789 /* offset, signed. */
790 if (operand->X_op == O_constant)
793 operand->X_add_number >>= 16;
795 opcode |= operand->X_add_number & 0xFFFF;
797 if (the_insn.HI && the_insn.LO)
798 as_bad (_("Both the_insn.HI and the_insn.LO are set : %s"), s);
807 the_insn.reloc = (the_insn.HI) ? RELOC_DLX_HI16
808 : (the_insn.LO ? RELOC_DLX_LO16 : RELOC_DLX_16);
809 the_insn.reloc_offset = 2;
812 the_insn.exp = * operand;
818 /* offset, signed. */
819 if (operand->X_op == O_constant)
821 opcode |= operand->X_add_number & 0xFFFF;
824 the_insn.reloc = RELOC_DLX_REL16;
825 the_insn.reloc_offset = 0; /* BIG-ENDIAN Byte 3 of insn. */
828 the_insn.exp = *operand;
831 /* The immediate 26 bits literal, bit 0-25. */
833 /* offset, signed. */
834 if (operand->X_op == O_constant)
836 opcode |= operand->X_add_number & 0x3FFFFFF;
839 the_insn.reloc = RELOC_DLX_REL26;
840 the_insn.reloc_offset = 0; /* BIG-ENDIAN Byte 3 of insn. */
843 the_insn.exp = *operand;
846 /* Type 'a' Register. */
848 /* A general register at bits 21-25, rs1. */
852 /* Type 'b' Register. */
854 /* A general register at bits 16-20, rs2/rd. */
858 /* Type 'c' Register. */
860 /* A general register at bits 11-15, rd. */
864 know (operand->X_add_symbol == 0);
865 know (operand->X_op_symbol == 0);
866 reg = operand->X_add_number;
867 if (reg & 0xffffffe0)
868 as_fatal (_("failed regnum sanity check."));
870 /* Got the register, now figure out where it goes in the opcode. */
871 opcode |= reg << reg_shift;
881 as_fatal (_("failed general register sanity check."));
888 /* Types or values of args don't match. */
889 as_bad (_("Invalid operands"));
894 /* Assemble a single instruction. Its label has already been handled
895 by the generic front end. We just parse opcode and operands, and
896 produce the bytes of data and relocation. */
899 md_assemble (char *str)
908 dwarf2_emit_insn (4);
910 /* Put out the opcode. */
911 md_number_to_chars (toP, the_insn.opcode, 4);
913 /* Put out the symbol-dependent stuff. */
914 if (the_insn.reloc != NO_RELOC)
916 fixP = fix_new_exp (frag_now,
917 (toP - frag_now->fr_literal + the_insn.reloc_offset),
918 the_insn.size, & the_insn.exp, the_insn.pcrel,
921 /* Turn off complaints that the addend is
922 too large for things like foo+100000@ha. */
923 switch (the_insn.reloc)
927 fixP->fx_no_overflow = 1;
933 switch (fixP->fx_r_type)
935 case RELOC_DLX_REL26:
936 bitP = XNEW (bit_fixS);
937 bitP->fx_bit_size = 26;
938 bitP->fx_bit_offset = 25;
939 bitP->fx_bit_base = the_insn.opcode & 0xFC000000;
940 bitP->fx_bit_base_adj = 0;
941 bitP->fx_bit_max = 0;
942 bitP->fx_bit_min = 0;
943 bitP->fx_bit_add = 0x03FFFFFF;
944 fixP->fx_bit_fixP = bitP;
947 case RELOC_DLX_REL16:
948 bitP = XNEW (bit_fixS);
949 bitP->fx_bit_size = 16;
950 bitP->fx_bit_offset = 15;
951 bitP->fx_bit_base = the_insn.opcode & 0xFFFF0000;
952 bitP->fx_bit_base_adj = 0;
953 bitP->fx_bit_max = 0;
954 bitP->fx_bit_min = 0;
955 bitP->fx_bit_add = 0x0000FFFF;
956 fixP->fx_bit_fixP = bitP;
959 bitP = XNEW (bit_fixS);
960 bitP->fx_bit_size = 16;
961 bitP->fx_bit_offset = 15;
962 bitP->fx_bit_base = the_insn.opcode & 0xFFFF0000;
963 bitP->fx_bit_base_adj = 0;
964 bitP->fx_bit_max = 0;
965 bitP->fx_bit_min = 0;
966 bitP->fx_bit_add = 0x0000FFFF;
967 fixP->fx_bit_fixP = bitP;
970 fixP->fx_bit_fixP = NULL;
976 /* This is identical to the md_atof in m68k.c. I think this is right,
977 but I'm not sure. Dlx will not use it anyway, so I just leave it
981 md_atof (int type, char *litP, int *sizeP)
983 return ieee_md_atof (type, litP, sizeP, TRUE);
986 /* Write out big-endian. */
988 md_number_to_chars (char *buf, valueT val, int n)
990 number_to_chars_bigendian (buf, val, n);
994 md_dlx_fix_adjustable (fixS *fixP)
996 /* We need the symbol name for the VTABLE entries. */
997 return (fixP->fx_r_type != BFD_RELOC_VTABLE_INHERIT
998 && fixP->fx_r_type != BFD_RELOC_VTABLE_ENTRY);
1002 md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
1005 char *place = fixP->fx_where + fixP->fx_frag->fr_literal;
1007 switch (fixP->fx_r_type)
1009 case RELOC_DLX_LO16:
1010 case RELOC_DLX_REL16:
1011 if (fixP->fx_bit_fixP != NULL)
1013 val = (val & 0x0000FFFF) | fixP->fx_bit_fixP->fx_bit_base;
1014 free (fixP->fx_bit_fixP);
1015 fixP->fx_bit_fixP = NULL;
1019 know ((fixP->fx_bit_fixP != NULL));
1023 case RELOC_DLX_HI16:
1024 if (fixP->fx_bit_fixP != NULL)
1026 val = (val >> 16) | fixP->fx_bit_fixP->fx_bit_base;
1027 free (fixP->fx_bit_fixP);
1028 fixP->fx_bit_fixP = NULL;
1032 know ((fixP->fx_bit_fixP != NULL));
1036 case RELOC_DLX_REL26:
1037 if (fixP->fx_bit_fixP != NULL)
1039 val = (val & 0x03FFFFFF) | fixP->fx_bit_fixP->fx_bit_base;
1040 free (fixP->fx_bit_fixP);
1041 fixP->fx_bit_fixP = NULL;
1045 know ((fixP->fx_bit_fixP != NULL));
1049 case BFD_RELOC_VTABLE_INHERIT:
1050 /* This borrowed from tc-ppc.c on a whim. */
1053 && !S_IS_DEFINED (fixP->fx_addsy)
1054 && !S_IS_WEAK (fixP->fx_addsy))
1055 S_SET_WEAK (fixP->fx_addsy);
1058 case BFD_RELOC_VTABLE_ENTRY:
1066 number_to_chars_bigendian (place, val, fixP->fx_size);
1067 if (fixP->fx_addsy == NULL)
1071 const char *md_shortopts = "";
1073 struct option md_longopts[] =
1075 {NULL, no_argument, NULL, 0}
1078 size_t md_longopts_size = sizeof (md_longopts);
1081 md_parse_option (int c ATTRIBUTE_UNUSED,
1082 const char *arg ATTRIBUTE_UNUSED)
1088 md_show_usage (FILE *stream ATTRIBUTE_UNUSED)
1092 /* This is called when a line is unrecognized. */
1095 dlx_unrecognized_line (int c)
1100 if (c != '$' || ! ISDIGIT ((unsigned char) input_line_pointer[0]))
1103 s = input_line_pointer;
1106 while (ISDIGIT ((unsigned char) *s))
1108 lab = lab * 10 + *s - '0';
1113 /* Not a label definition. */
1116 if (dollar_label_defined (lab))
1118 as_bad (_("label \"$%d\" redefined"), lab);
1122 define_dollar_label (lab);
1123 colon (dollar_label_name (lab, 0));
1124 input_line_pointer = s + 1;
1129 /* Default the values of symbols known that should be "predefined". We
1130 don't bother to predefine them unless you actually use one, since there
1131 are a lot of them. */
1134 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
1139 /* Parse an operand that is machine-specific, the function was called
1140 in expr.c by operand() function, when everything failed before it
1144 md_operand (expressionS* expressionP)
1146 /* Check for the #number representation */
1147 if (input_line_pointer[0] == '#' &&
1148 ISDIGIT ((unsigned char) input_line_pointer[1]))
1150 /* We have a numeric number expression. No biggy. */
1151 input_line_pointer += 1; /* Skip # */
1153 (void) expression (expressionP);
1155 if (expressionP->X_op != O_constant)
1156 as_bad (_("Invalid expression after # number\n"));
1162 /* Round up a section size to the appropriate boundary. */
1165 md_section_align (segT segment ATTRIBUTE_UNUSED,
1168 /* Byte alignment is fine. */
1172 /* Exactly what point is a PC-relative offset relative TO?
1173 On the 29000, they're relative to the address of the instruction,
1174 which we have set up as the address of the fixup too. */
1177 md_pcrel_from (fixS* fixP)
1179 return 4 + fixP->fx_where + fixP->fx_frag->fr_address;
1182 /* Translate internal representation of relocation info to BFD target
1184 FIXME: To what extent can we get all relevant targets to use this?
1185 The above FIXME is from a29k, but I think it is also needed here. */
1188 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
1193 reloc = XNEW (arelent);
1194 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type);
1196 if (reloc->howto == NULL)
1198 as_bad_where (fixP->fx_file, fixP->fx_line,
1199 _("internal error: can't export reloc type %d (`%s')"),
1201 bfd_get_reloc_code_name (fixP->fx_r_type));
1205 gas_assert (!fixP->fx_pcrel == !reloc->howto->pc_relative);
1207 reloc->sym_ptr_ptr = XNEW (asymbol *);
1208 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
1209 reloc->address = fixP->fx_frag->fr_address + fixP->fx_where;
1211 if (fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
1212 reloc->address = fixP->fx_offset;
1219 dlx_pseudo_table[] =
1221 /* Some additional ops that are used by gcc-dlx. */
1222 {"asciiz", stringer, 8 + 1},
1226 {"proc", s_proc, 0},
1227 {"endproc", s_proc, 1},
1232 dlx_pop_insert (void)
1234 pop_insert (dlx_pseudo_table);