1 /* tc-ldx.c -- Assemble for the DLX
2 Copyright 2002, 2003, 2004, 2005, 2007, 2009
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 3, 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
22 /* Initially created by Kuang Hwa Lin, 3/20/2002. */
24 #include "safe-ctype.h"
27 #include "opcode/dlx.h"
29 /* Make it easier to clone this machine desc into another one. */
30 #define machine_opcode dlx_opcode
31 #define machine_opcodes dlx_opcodes
32 #define machine_ip dlx_ip
33 #define machine_it dlx_it
35 #define NO_RELOC BFD_RELOC_NONE
36 #define RELOC_DLX_REL26 BFD_RELOC_DLX_JMP26
37 #define RELOC_DLX_16 BFD_RELOC_16
38 #define RELOC_DLX_REL16 BFD_RELOC_16_PCREL_S2
39 #define RELOC_DLX_HI16 BFD_RELOC_HI16_S
40 #define RELOC_DLX_LO16 BFD_RELOC_LO16
41 #define RELOC_DLX_VTINHERIT BFD_RELOC_VTABLE_INHERIT
42 #define RELOC_DLX_VTENTRY BFD_RELOC_VTABLE_ENTRY
44 /* handle of the OPCODE hash table */
45 static struct hash_control *op_hash = NULL;
55 int reloc_offset; /* Offset of reloc within insn. */
62 /* This array holds the chars that always start a comment. If the
63 pre-processor is disabled, these aren't very useful. */
64 const char comment_chars[] = ";";
66 /* This array holds the chars that only start a comment at the beginning of
67 a line. If the line seems to have the form '# 123 filename'
68 .line and .file directives will appear in the pre-processed output. */
69 /* Note that input_file.c hand checks for '#' at the beginning of the
70 first line of the input file. This is because the compiler outputs
71 #NO_APP at the beginning of its output. */
72 /* Also note that comments like this one will always work. */
73 const char line_comment_chars[] = "#";
75 /* We needed an unused char for line separation to work around the
76 lack of macros, using sed and such. */
77 const char line_separator_chars[] = "@";
79 /* Chars that can be used to separate mant from exp in floating point nums. */
80 const char EXP_CHARS[] = "eE";
82 /* Chars that mean this number is a floating point constant.
85 const char FLT_CHARS[] = "rRsSfFdDxXpP";
88 insert_sreg (char *regname, int regnum)
90 /* Must be large enough to hold the names of the special registers. */
94 symbol_table_insert (symbol_new (regname, reg_section, (valueT) regnum,
96 for (i = 0; regname[i]; i++)
97 buf[i] = ISLOWER (regname[i]) ? TOUPPER (regname[i]) : regname[i];
100 symbol_table_insert (symbol_new (buf, reg_section, (valueT) regnum,
101 &zero_address_frag));
104 /* Install symbol definitions for assorted special registers.
105 See MIPS Assembly Language Programmer's Guide page 1-4 */
108 define_some_regs (void)
110 /* Software representation. */
111 insert_sreg ("zero", 0);
112 insert_sreg ("at", 1);
113 insert_sreg ("v0", 2);
114 insert_sreg ("v1", 3);
115 insert_sreg ("a0", 4);
116 insert_sreg ("a1", 5);
117 insert_sreg ("a2", 6);
118 insert_sreg ("a3", 7);
119 insert_sreg ("t0", 8);
120 insert_sreg ("t1", 9);
121 insert_sreg ("t2", 10);
122 insert_sreg ("t3", 11);
123 insert_sreg ("t4", 12);
124 insert_sreg ("t5", 13);
125 insert_sreg ("t6", 14);
126 insert_sreg ("t7", 15);
127 insert_sreg ("s0", 16);
128 insert_sreg ("s1", 17);
129 insert_sreg ("s2", 18);
130 insert_sreg ("s3", 19);
131 insert_sreg ("s4", 20);
132 insert_sreg ("s5", 21);
133 insert_sreg ("s6", 22);
134 insert_sreg ("s7", 23);
135 insert_sreg ("t8", 24);
136 insert_sreg ("t9", 25);
137 insert_sreg ("k0", 26);
138 insert_sreg ("k1", 27);
139 insert_sreg ("gp", 28);
140 insert_sreg ("sp", 29);
141 insert_sreg ("fp", 30);
142 insert_sreg ("ra", 31);
143 /* Special registers. */
144 insert_sreg ("pc", 0);
145 insert_sreg ("npc", 1);
146 insert_sreg ("iad", 2);
149 /* Subroutine check the string to match an register. */
152 match_sft_register (char *name)
154 #define MAX_REG_NO 35
155 /* Currently we have 35 software registers defined -
156 we borrowed from MIPS. */
157 static char *soft_reg[] =
159 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
160 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9",
161 "s0", "s1", "s2", "s3", "s4", "s5", "s7", "k0", "k1",
162 "gp", "sp", "fp", "ra", "pc", "npc", "iad",
163 "EndofTab" /* End of the Table indicator */
165 char low_name[21], *ptr;
168 for (ptr = name,idx = 0; *ptr != '\0'; ptr++)
169 low_name[idx++] = TOLOWER (*ptr);
171 low_name[idx] = '\0';
174 while (idx < MAX_REG_NO && strcmp (soft_reg[idx], & low_name [0]))
177 return idx < MAX_REG_NO;
180 /* Subroutine check the string to match an register. */
183 is_ldst_registers (char *name)
187 /* The first character of the register name got to be either %, $, r of R. */
188 if ((ptr[0] == '%' || ptr[0] == '$' || ptr[0] == 'r' || ptr[0] == 'R')
189 && ISDIGIT ((unsigned char) ptr[1]))
192 /* Now check the software register representation. */
193 return match_sft_register (ptr);
196 /* Subroutine of s_proc so targets can choose a different default prefix.
197 If DEFAULT_PREFIX is NULL, use the target's "leading char". */
202 /* Record the current function so that we can issue an error message for
203 misplaced .func,.endfunc, and also so that .endfunc needs no
205 static char *current_name;
206 static char *current_label;
210 if (current_name == NULL)
212 as_bad (_("missing .proc"));
213 ignore_rest_of_line ();
217 current_name = current_label = NULL;
219 while (!is_end_of_line[(unsigned char) *input_line_pointer])
220 input_line_pointer++;
227 if (current_name != NULL)
229 as_bad (_(".endfunc missing for previous .proc"));
230 ignore_rest_of_line ();
234 name = input_line_pointer;
235 delim1 = get_symbol_end ();
236 name = xstrdup (name);
237 *input_line_pointer = delim1;
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
248 asprintf (&label, "%c%s", leading_char, name);
254 ++input_line_pointer;
256 label = input_line_pointer;
257 delim2 = get_symbol_end ();
258 label = xstrdup (label);
259 *input_line_pointer = delim2;
263 current_label = label;
265 demand_empty_rest_of_line ();
268 /* This function is called once, at assembler startup time. It should
269 set up all the tables, etc., that the MD part of the assembler will
275 const char *retval = NULL;
279 /* Create a new hash table. */
280 op_hash = hash_new ();
282 /* Hash up all the opcodes for fast use later. */
283 for (i = 0; i < num_dlx_opcodes; i++)
285 const char *name = machine_opcodes[i].name;
287 retval = hash_insert (op_hash, name, (void *) &machine_opcodes[i]);
291 fprintf (stderr, _("internal error: can't hash `%s': %s\n"),
292 machine_opcodes[i].name, retval);
298 as_fatal (_("Broken assembler. No assembly attempted."));
303 /* This function will check the opcode and return 1 if the opcode is one
304 of the load/store instruction, and it will fix the operand string to
305 the standard form so we can use the standard parse_operand routine. */
307 #define READ_OP 0x100
308 #define WRITE_OP 0x200
309 static char iBuf[81];
312 dlx_parse_loadop (char * str)
317 /* The last pair of ()/[] is the register, all other are the
318 reloc displacement, and if there is a register then it ought
319 to have a pair of ()/[]
320 This is not necessarily true, what if the load instruction come
321 without the register and with %hi/%lo modifier? */
322 for (idx = 0; idx < 72 && ptr[idx] != '\0'; idx++)
328 as_bad (_("Bad operand for a load instruction: <%s>"), str);
335 char rs1[7], rd[7], endm, match = '0';
350 /* No register indicated, fill in zero. */
361 /* Searching for (/[ which will match the ]/). */
362 for (pb = idx - 1; str[pb] != match; pb -= 1)
363 /* Match can only be either '[' or '(', if it is
364 '(' then this can be a normal expression, we'll treat
366 if (str[pb] == endm || pb < (idx - 5))
370 for (i = 0; (pb + i) < idx; i++)
375 if (is_ldst_registers (& rs1[0]))
376 /* Point to the last character of the imm. */
382 goto badoperand_load;
383 /* No register indicated, fill in zero and restore the imm. */
391 /* Duplicate the first register. */
392 for (i = 0; i < 7 && str[i] != ','; i++)
396 goto badoperand_load;
402 /* Put the '\0' back in. */
405 for (i++, m2 = 0; i < pb; m2++,i++)
410 /* Assemble the instruction to gas internal format. */
411 for (i = 0; rd[i] != '\0'; i++)
416 for (pb = 0 ; rs1[pb] != '\0'; i++, pb++)
421 for (pb = 0; imm[pb] != '\0'; i++, pb++)
430 dlx_parse_storeop (char * str)
435 /* Search for the ','. */
436 for (idx = 0; idx < 72 && ptr[idx] != ','; idx++)
442 as_bad (_("Bad operand for a store instruction: <%s>"), str);
447 /* idx now points to the ','. */
451 char rs1[7], rd[7], endm, match = '0';
454 /* Now parse the '(' and ')', and make idx point to ')'. */
467 /* No register indicated, fill in zero. */
478 /* Searching for (/[ which will match the ]/). */
479 for (pb = idx - 1; str[pb] != match; pb -= 1)
480 if (pb < (idx - 5) || str[pb] == endm)
484 for (i = 0; (pb + i) < idx; i++)
485 rs1[i] = str[pb + i];
489 if (is_ldst_registers (& rs1[0]))
490 /* Point to the last character of the imm. */
496 goto badoperand_store;
498 /* No register indicated, fill in zero and restore the imm. */
506 /* No register was specified. */
509 /* Duplicate the first register. */
510 for (i = comma + 1; (str[i] == ' ' || str[i] == '\t'); i++)
513 for (m2 = 0; (m2 < 7 && str[i] != '\0'); i++, m2++)
515 if (str[i] != ' ' && str[i] != '\t')
518 goto badoperand_store;
522 goto badoperand_store;
527 for (i = 0; i < pb; i++)
532 /* Assemble the instruction to gas internal format. */
533 for (i = 0; rd[i] != '\0'; i++)
536 for (pb = 0 ; rs1[pb] != '\0'; i++, pb++)
539 for (pb = 0; imm[pb] != '\0'; i++, pb++)
547 fix_ld_st_operand (unsigned long opcode, char* str)
549 /* Check the opcode. */
550 switch ((int) opcode)
560 return dlx_parse_loadop (str);
564 return dlx_parse_storeop (str);
571 hilo_modifier_ok (char *s)
579 for (idx = 1; ptr[idx] != '\0' && ptr[idx] != '[' && idx < 73; idx += 1)
591 return (count == 0) ? 1:0;
595 parse_operand (char *s, expressionS *operandp)
597 char *save = input_line_pointer;
600 the_insn.HI = the_insn.LO = 0;
602 /* Search for %hi and %lo, make a mark and skip it. */
603 if (strncmp (s, "%hi", 3) == 0)
610 if (strncmp (s, "%lo", 3) == 0)
619 if (the_insn.HI || the_insn.LO)
621 if (!hilo_modifier_ok (s))
622 as_bad (_("Expression Error for operand modifier %%hi/%%lo\n"));
625 /* Check for the % and $ register representation */
626 if ((s[0] == '%' || s[0] == '$' || s[0] == 'r' || s[0] == 'R')
627 && ISDIGIT ((unsigned char) s[1]))
629 /* We have a numeric register expression. No biggy. */
631 input_line_pointer = s;
632 (void) expression (operandp);
633 if (operandp->X_op != O_constant
634 || operandp->X_add_number > 31)
635 as_bad (_("Invalid expression after %%%%\n"));
636 operandp->X_op = O_register;
640 /* Normal operand parsing. */
641 input_line_pointer = s;
642 (void) expression (operandp);
645 new_pos = input_line_pointer;
646 input_line_pointer = save;
650 /* Instruction parsing. Takes a string containing the opcode.
651 Operands are at input_line_pointer. Output is in the_insn.
652 Warnings or errors are generated. */
655 machine_ip (char *str)
659 struct machine_opcode *insn;
661 unsigned long opcode;
662 expressionS the_operand;
663 expressionS *operand = &the_operand;
664 unsigned int reg, reg_shift = 0;
666 /* Fixup the opcode string to all lower cases, and also
667 allow numerical digits. */
671 for (; ISALNUM (*s); ++s)
680 /* FIXME-SOMEDAY more whitespace. */
686 as_bad (_("Unknown opcode: `%s'"), str);
690 /* Hash the opcode, insn will have the string from opcode table.
691 also initialized the_insn struct. */
692 if ((insn = (struct machine_opcode *) hash_find (op_hash, str)) == NULL)
694 /* Handle the ret and return macro here. */
695 if ((strcmp (str, "ret") == 0) || (strcmp (str, "return") == 0))
697 memset (&the_insn, '\0', sizeof (the_insn));
698 the_insn.reloc = NO_RELOC;
701 (unsigned long)(JROP | 0x03e00000); /* 0x03e00000 = r31 << 21 */
704 as_bad (_("Unknown opcode `%s'."), str);
710 opcode = insn->opcode;
711 memset (&the_insn, '\0', sizeof (the_insn));
712 the_insn.reloc = NO_RELOC;
715 /* Set the sip reloc HI16 flag. */
716 if (!set_dlx_skip_hi16_flag (1))
717 as_bad (_("Can not set dlx_skip_hi16_flag"));
719 /* Fix the operand string if it is one of load store instructions. */
720 s = fix_ld_st_operand (opcode, s);
722 /* Build the opcode, checking as we go to make sure that the
724 If an operand matches, we modify the_insn or opcode appropriately,
725 and do a "continue". If an operand fails to match, we "break". */
726 if (insn->args[0] != '\0' && insn->args[0] != 'N')
728 /* Prime the pump. */
731 as_bad (_("Missing arguments for opcode <%s>."), str);
735 s = parse_operand (s, operand);
737 else if (insn->args[0] == 'N')
739 /* Clean up the insn and done! */
740 the_insn.opcode = opcode;
744 /* Parse through the args (this is from opcode table), *s point to
745 the current character of the instruction stream. */
746 for (args = insn->args;; ++args)
755 /* We are truly done. */
756 the_insn.opcode = opcode;
757 /* Clean up the HI and LO mark. */
765 as_bad (_("Too many operands: %s"), s);
768 /* ',' Args separator */
770 /* Must match a comma. */
773 /* Parse next operand. */
774 s = parse_operand (s, operand);
779 /* It can be a 'a' register or 'i' operand. */
781 /* Macro move operand/reg. */
782 if (operand->X_op == O_register)
784 /* Its a register. */
789 /* The immediate 16 bits literal, bit 0-15. */
791 /* offset, unsigned. */
793 /* offset, signed. */
794 if (operand->X_op == O_constant)
797 operand->X_add_number >>= 16;
799 opcode |= operand->X_add_number & 0xFFFF;
801 if (the_insn.HI && the_insn.LO)
802 as_bad (_("Both the_insn.HI and the_insn.LO are set : %s"), s);
811 the_insn.reloc = (the_insn.HI) ? RELOC_DLX_HI16
812 : (the_insn.LO ? RELOC_DLX_LO16 : RELOC_DLX_16);
813 the_insn.reloc_offset = 2;
816 the_insn.exp = * operand;
822 /* offset, signed. */
823 if (operand->X_op == O_constant)
825 opcode |= operand->X_add_number & 0xFFFF;
828 the_insn.reloc = RELOC_DLX_REL16;
829 the_insn.reloc_offset = 0; /* BIG-ENDIAN Byte 3 of insn. */
832 the_insn.exp = *operand;
835 /* The immediate 26 bits literal, bit 0-25. */
837 /* offset, signed. */
838 if (operand->X_op == O_constant)
840 opcode |= operand->X_add_number & 0x3FFFFFF;
843 the_insn.reloc = RELOC_DLX_REL26;
844 the_insn.reloc_offset = 0; /* BIG-ENDIAN Byte 3 of insn. */
847 the_insn.exp = *operand;
850 /* Type 'a' Register. */
852 /* A general register at bits 21-25, rs1. */
856 /* Type 'b' Register. */
858 /* A general register at bits 16-20, rs2/rd. */
862 /* Type 'c' Register. */
864 /* A general register at bits 11-15, rd. */
868 know (operand->X_add_symbol == 0);
869 know (operand->X_op_symbol == 0);
870 reg = operand->X_add_number;
871 if (reg & 0xffffffe0)
872 as_fatal (_("failed regnum sanity check."));
874 /* Got the register, now figure out where it goes in the opcode. */
875 opcode |= reg << reg_shift;
885 as_fatal (_("failed general register sanity check."));
892 /* Types or values of args don't match. */
893 as_bad (_("Invalid operands"));
898 /* Assemble a single instruction. Its label has already been handled
899 by the generic front end. We just parse opcode and operands, and
900 produce the bytes of data and relocation. */
903 md_assemble (char *str)
912 /* Put out the opcode. */
913 md_number_to_chars (toP, the_insn.opcode, 4);
915 /* Put out the symbol-dependent stuff. */
916 if (the_insn.reloc != NO_RELOC)
918 fixP = fix_new_exp (frag_now,
919 (toP - frag_now->fr_literal + the_insn.reloc_offset),
920 the_insn.size, & the_insn.exp, the_insn.pcrel,
923 /* Turn off complaints that the addend is
924 too large for things like foo+100000@ha. */
925 switch (the_insn.reloc)
929 fixP->fx_no_overflow = 1;
935 switch (fixP->fx_r_type)
937 case RELOC_DLX_REL26:
938 bitP = malloc (sizeof (bit_fixS));
939 bitP->fx_bit_size = 26;
940 bitP->fx_bit_offset = 25;
941 bitP->fx_bit_base = the_insn.opcode & 0xFC000000;
942 bitP->fx_bit_base_adj = 0;
943 bitP->fx_bit_max = 0;
944 bitP->fx_bit_min = 0;
945 bitP->fx_bit_add = 0x03FFFFFF;
946 fixP->fx_bit_fixP = bitP;
949 case RELOC_DLX_REL16:
950 bitP = malloc (sizeof (bit_fixS));
951 bitP->fx_bit_size = 16;
952 bitP->fx_bit_offset = 15;
953 bitP->fx_bit_base = the_insn.opcode & 0xFFFF0000;
954 bitP->fx_bit_base_adj = 0;
955 bitP->fx_bit_max = 0;
956 bitP->fx_bit_min = 0;
957 bitP->fx_bit_add = 0x0000FFFF;
958 fixP->fx_bit_fixP = bitP;
961 bitP = malloc (sizeof (bit_fixS));
962 bitP->fx_bit_size = 16;
963 bitP->fx_bit_offset = 15;
964 bitP->fx_bit_base = the_insn.opcode & 0xFFFF0000;
965 bitP->fx_bit_base_adj = 0;
966 bitP->fx_bit_max = 0;
967 bitP->fx_bit_min = 0;
968 bitP->fx_bit_add = 0x0000FFFF;
969 fixP->fx_bit_fixP = bitP;
972 fixP->fx_bit_fixP = NULL;
978 /* This is identical to the md_atof in m68k.c. I think this is right,
979 but I'm not sure. Dlx will not use it anyway, so I just leave it
983 md_atof (int type, char *litP, int *sizeP)
985 return ieee_md_atof (type, litP, sizeP, TRUE);
988 /* Write out big-endian. */
990 md_number_to_chars (char *buf, valueT val, int n)
992 number_to_chars_bigendian (buf, val, n);
996 md_dlx_fix_adjustable (fixS *fixP)
998 /* We need the symbol name for the VTABLE entries. */
999 return (fixP->fx_r_type != BFD_RELOC_VTABLE_INHERIT
1000 && fixP->fx_r_type != BFD_RELOC_VTABLE_ENTRY);
1004 md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
1007 char *place = fixP->fx_where + fixP->fx_frag->fr_literal;
1009 switch (fixP->fx_r_type)
1011 case RELOC_DLX_LO16:
1012 case RELOC_DLX_REL16:
1013 if (fixP->fx_bit_fixP != NULL)
1015 val = (val & 0x0000FFFF) | fixP->fx_bit_fixP->fx_bit_base;
1016 free (fixP->fx_bit_fixP);
1017 fixP->fx_bit_fixP = NULL;
1021 know ((fixP->fx_bit_fixP != NULL));
1025 case RELOC_DLX_HI16:
1026 if (fixP->fx_bit_fixP != NULL)
1028 val = (val >> 16) | fixP->fx_bit_fixP->fx_bit_base;
1029 free (fixP->fx_bit_fixP);
1030 fixP->fx_bit_fixP = NULL;
1034 know ((fixP->fx_bit_fixP != NULL));
1038 case RELOC_DLX_REL26:
1039 if (fixP->fx_bit_fixP != NULL)
1041 val = (val & 0x03FFFFFF) | fixP->fx_bit_fixP->fx_bit_base;
1042 free (fixP->fx_bit_fixP);
1043 fixP->fx_bit_fixP = NULL;
1047 know ((fixP->fx_bit_fixP != NULL));
1051 case BFD_RELOC_VTABLE_INHERIT:
1052 /* This borrowed from tc-ppc.c on a whim. */
1055 && !S_IS_DEFINED (fixP->fx_addsy)
1056 && !S_IS_WEAK (fixP->fx_addsy))
1057 S_SET_WEAK (fixP->fx_addsy);
1060 case BFD_RELOC_VTABLE_ENTRY:
1068 number_to_chars_bigendian (place, val, fixP->fx_size);
1069 if (fixP->fx_addsy == NULL)
1073 const char *md_shortopts = "";
1075 struct option md_longopts[] =
1077 {NULL, no_argument, NULL, 0}
1080 size_t md_longopts_size = sizeof (md_longopts);
1083 md_parse_option (int c ATTRIBUTE_UNUSED,
1084 char *arg ATTRIBUTE_UNUSED)
1090 md_show_usage (FILE *stream ATTRIBUTE_UNUSED)
1094 /* This is called when a line is unrecognized. */
1097 dlx_unrecognized_line (int c)
1102 if (c != '$' || ! ISDIGIT ((unsigned char) input_line_pointer[0]))
1105 s = input_line_pointer;
1108 while (ISDIGIT ((unsigned char) *s))
1110 lab = lab * 10 + *s - '0';
1115 /* Not a label definition. */
1118 if (dollar_label_defined (lab))
1120 as_bad (_("label \"$%d\" redefined"), lab);
1124 define_dollar_label (lab);
1125 colon (dollar_label_name (lab, 0));
1126 input_line_pointer = s + 1;
1131 /* Default the values of symbols known that should be "predefined". We
1132 don't bother to predefine them unless you actually use one, since there
1133 are a lot of them. */
1136 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
1141 /* Parse an operand that is machine-specific, the function was called
1142 in expr.c by operand() function, when everything failed before it
1146 md_operand (expressionS* expressionP)
1148 /* Check for the #number representation */
1149 if (input_line_pointer[0] == '#' &&
1150 ISDIGIT ((unsigned char) input_line_pointer[1]))
1152 /* We have a numeric number expression. No biggy. */
1153 input_line_pointer += 1; /* Skip # */
1155 (void) expression (expressionP);
1157 if (expressionP->X_op != O_constant)
1158 as_bad (_("Invalid expression after # number\n"));
1164 /* Round up a section size to the appropriate boundary. */
1167 md_section_align (segT segment ATTRIBUTE_UNUSED,
1170 /* Byte alignment is fine. */
1174 /* Exactly what point is a PC-relative offset relative TO?
1175 On the 29000, they're relative to the address of the instruction,
1176 which we have set up as the address of the fixup too. */
1179 md_pcrel_from (fixS* fixP)
1181 return 4 + fixP->fx_where + fixP->fx_frag->fr_address;
1184 /* Translate internal representation of relocation info to BFD target
1186 FIXME: To what extent can we get all relevant targets to use this?
1187 The above FIXME is from a29k, but I think it is also needed here. */
1190 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
1195 reloc = xmalloc (sizeof (arelent));
1196 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type);
1198 if (reloc->howto == NULL)
1200 as_bad_where (fixP->fx_file, fixP->fx_line,
1201 _("internal error: can't export reloc type %d (`%s')"),
1203 bfd_get_reloc_code_name (fixP->fx_r_type));
1207 gas_assert (!fixP->fx_pcrel == !reloc->howto->pc_relative);
1209 reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
1210 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
1211 reloc->address = fixP->fx_frag->fr_address + fixP->fx_where;
1213 if (fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
1214 reloc->address = fixP->fx_offset;
1221 dlx_pseudo_table[] =
1223 /* Some additional ops that are used by gcc-dlx. */
1224 {"asciiz", stringer, 8 + 1},
1228 {"proc", s_proc, 0},
1229 {"endproc", s_proc, 1},
1234 dlx_pop_insert (void)
1236 pop_insert (dlx_pseudo_table);