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-rw-r--r--opcodes/arm-dis.c960
1 files changed, 0 insertions, 960 deletions
diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
deleted file mode 100644
index baac4a4dfad..00000000000
--- a/opcodes/arm-dis.c
+++ /dev/null
@@ -1,960 +0,0 @@
-/* Instruction printing code for the ARM
- Copyright (C) 1994, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
- Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
- Modification by James G. Smith (jsmith@cygnus.co.uk)
-
-This file is part of libopcodes.
-
-This program is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2 of the License, or (at your option)
-any later version.
-
-This program is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
-more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "dis-asm.h"
-#define DEFINE_TABLE
-#include "arm-opc.h"
-#include "coff/internal.h"
-#include "libcoff.h"
-#include "opintl.h"
-
-/* FIXME: This shouldn't be done here */
-#include "elf-bfd.h"
-#include "elf/internal.h"
-#include "elf/arm.h"
-
-static char * arm_conditional[] =
-{"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc",
- "hi", "ls", "ge", "lt", "gt", "le", "", "nv"};
-
-static char * arm_regnames_raw[] =
-{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"};
-
-static char * arm_regnames_standard[] =
-{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc"};
-
-static char * arm_regnames_apcs[] =
-{"a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4",
- "v5", "v6", "sl", "fp", "ip", "sp", "lr", "pc"};
-
-/* Choose which register name set to use. */
-static char ** arm_regnames = arm_regnames_standard;
-
-static char * arm_fp_const[] =
-{"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"};
-
-static char * arm_shift[] =
-{"lsl", "lsr", "asr", "ror"};
-
-static int print_insn_arm
- PARAMS ((bfd_vma, struct disassemble_info *, long));
-
-static void
-arm_decode_shift (given, func, stream)
- long given;
- fprintf_ftype func;
- void * stream;
-{
- func (stream, "%s", arm_regnames[given & 0xf]);
-
- if ((given & 0xff0) != 0)
- {
- if ((given & 0x10) == 0)
- {
- int amount = (given & 0xf80) >> 7;
- int shift = (given & 0x60) >> 5;
-
- if (amount == 0)
- {
- if (shift == 3)
- {
- func (stream, ", rrx");
- return;
- }
-
- amount = 32;
- }
-
- func (stream, ", %s #%d", arm_shift[shift], amount);
- }
- else
- func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5],
- arm_regnames[(given & 0xf00) >> 8]);
- }
-}
-
-/* Print one instruction from PC on INFO->STREAM.
- Return the size of the instruction (always 4 on ARM). */
-
-static int
-print_insn_arm (pc, info, given)
- bfd_vma pc;
- struct disassemble_info * info;
- long given;
-{
- struct arm_opcode * insn;
- void * stream = info->stream;
- fprintf_ftype func = info->fprintf_func;
-
- for (insn = arm_opcodes; insn->assembler; insn++)
- {
- if ((given & insn->mask) == insn->value)
- {
- char * c;
-
- for (c = insn->assembler; *c; c++)
- {
- if (*c == '%')
- {
- switch (*++c)
- {
- case '%':
- func (stream, "%%");
- break;
-
- case 'a':
- if (((given & 0x000f0000) == 0x000f0000)
- && ((given & 0x02000000) == 0))
- {
- int offset = given & 0xfff;
-
- func (stream, "[pc");
-
- if (given & 0x01000000)
- {
- if ((given & 0x00800000) == 0)
- offset = - offset;
-
- /* pre-indexed */
- func (stream, ", #%x]", offset);
-
- offset += pc + 8;
-
- /* Cope with the possibility of write-back being used.
- Probably a very dangerous thing for the programmer
- to do, but who are we to argue ? */
- if (given & 0x00200000)
- func (stream, "!");
- }
- else
- {
- /* post indexed */
- func (stream, "], #%x", offset);
-
- offset = pc + 8; /* ie ignore the offset */
- }
-
- func (stream, "\t; ");
- info->print_address_func (offset, info);
- }
- else
- {
- func (stream, "[%s",
- arm_regnames[(given >> 16) & 0xf]);
- if ((given & 0x01000000) != 0)
- {
- if ((given & 0x02000000) == 0)
- {
- int offset = given & 0xfff;
- if (offset)
- func (stream, ", %s#%d",
- (((given & 0x00800000) == 0)
- ? "-" : ""), offset);
- }
- else
- {
- func (stream, ", %s",
- (((given & 0x00800000) == 0)
- ? "-" : ""));
- arm_decode_shift (given, func, stream);
- }
-
- func (stream, "]%s",
- ((given & 0x00200000) != 0) ? "!" : "");
- }
- else
- {
- if ((given & 0x02000000) == 0)
- {
- int offset = given & 0xfff;
- if (offset)
- func (stream, "], %s#%d",
- (((given & 0x00800000) == 0)
- ? "-" : ""), offset);
- else
- func (stream, "]");
- }
- else
- {
- func (stream, "], %s",
- (((given & 0x00800000) == 0)
- ? "-" : ""));
- arm_decode_shift (given, func, stream);
- }
- }
- }
- break;
-
- case 's':
- if ((given & 0x004f0000) == 0x004f0000)
- {
- /* PC relative with immediate offset */
- int offset = ((given & 0xf00) >> 4) | (given & 0xf);
-
- if ((given & 0x00800000) == 0)
- offset = -offset;
-
- func (stream, "[pc, #%x]\t; ", offset);
-
- (*info->print_address_func)
- (offset + pc + 8, info);
- }
- else
- {
- func (stream, "[%s",
- arm_regnames[(given >> 16) & 0xf]);
- if ((given & 0x01000000) != 0)
- {
- /* pre-indexed */
- if ((given & 0x00400000) == 0x00400000)
- {
- /* immediate */
- int offset = ((given & 0xf00) >> 4) | (given & 0xf);
- if (offset)
- func (stream, ", %s#%d",
- (((given & 0x00800000) == 0)
- ? "-" : ""), offset);
- }
- else
- {
- /* register */
- func (stream, ", %s%s",
- (((given & 0x00800000) == 0)
- ? "-" : ""),
- arm_regnames[given & 0xf]);
- }
-
- func (stream, "]%s",
- ((given & 0x00200000) != 0) ? "!" : "");
- }
- else
- {
- /* post-indexed */
- if ((given & 0x00400000) == 0x00400000)
- {
- /* immediate */
- int offset = ((given & 0xf00) >> 4) | (given & 0xf);
- if (offset)
- func (stream, "], %s#%d",
- (((given & 0x00800000) == 0)
- ? "-" : ""), offset);
- else
- func (stream, "]");
- }
- else
- {
- /* register */
- func (stream, "], %s%s",
- (((given & 0x00800000) == 0)
- ? "-" : ""),
- arm_regnames[given & 0xf]);
- }
- }
- }
- break;
-
- case 'b':
- (*info->print_address_func)
- (BDISP (given) * 4 + pc + 8, info);
- break;
-
- case 'c':
- func (stream, "%s",
- arm_conditional [(given >> 28) & 0xf]);
- break;
-
- case 'm':
- {
- int started = 0;
- int reg;
-
- func (stream, "{");
- for (reg = 0; reg < 16; reg++)
- if ((given & (1 << reg)) != 0)
- {
- if (started)
- func (stream, ", ");
- started = 1;
- func (stream, "%s", arm_regnames[reg]);
- }
- func (stream, "}");
- }
- break;
-
- case 'o':
- if ((given & 0x02000000) != 0)
- {
- int rotate = (given & 0xf00) >> 7;
- int immed = (given & 0xff);
- immed = (((immed << (32 - rotate))
- | (immed >> rotate)) & 0xffffffff);
- func (stream, "#%d\t; 0x%x", immed, immed);
- }
- else
- arm_decode_shift (given, func, stream);
- break;
-
- case 'p':
- if ((given & 0x0000f000) == 0x0000f000)
- func (stream, "p");
- break;
-
- case 't':
- if ((given & 0x01200000) == 0x00200000)
- func (stream, "t");
- break;
-
- case 'h':
- if ((given & 0x00000020) == 0x00000020)
- func (stream, "h");
- else
- func (stream, "b");
- break;
-
- case 'A':
- func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]);
- if ((given & 0x01000000) != 0)
- {
- int offset = given & 0xff;
- if (offset)
- func (stream, ", %s#%d]%s",
- ((given & 0x00800000) == 0 ? "-" : ""),
- offset * 4,
- ((given & 0x00200000) != 0 ? "!" : ""));
- else
- func (stream, "]");
- }
- else
- {
- int offset = given & 0xff;
- if (offset)
- func (stream, "], %s#%d",
- ((given & 0x00800000) == 0 ? "-" : ""),
- offset * 4);
- else
- func (stream, "]");
- }
- break;
-
- case 'C':
- switch (given & 0x00090000)
- {
- default:
- func (stream, "_???");
- break;
- case 0x90000:
- func (stream, "_all");
- break;
- case 0x10000:
- func (stream, "_ctl");
- break;
- case 0x80000:
- func (stream, "_flg");
- break;
- }
- break;
-
- case 'F':
- switch (given & 0x00408000)
- {
- case 0:
- func (stream, "4");
- break;
- case 0x8000:
- func (stream, "1");
- break;
- case 0x00400000:
- func (stream, "2");
- break;
- default:
- func (stream, "3");
- }
- break;
-
- case 'P':
- switch (given & 0x00080080)
- {
- case 0:
- func (stream, "s");
- break;
- case 0x80:
- func (stream, "d");
- break;
- case 0x00080000:
- func (stream, "e");
- break;
- default:
- func (stream, _("<illegal precision>"));
- break;
- }
- break;
- case 'Q':
- switch (given & 0x00408000)
- {
- case 0:
- func (stream, "s");
- break;
- case 0x8000:
- func (stream, "d");
- break;
- case 0x00400000:
- func (stream, "e");
- break;
- default:
- func (stream, "p");
- break;
- }
- break;
- case 'R':
- switch (given & 0x60)
- {
- case 0:
- break;
- case 0x20:
- func (stream, "p");
- break;
- case 0x40:
- func (stream, "m");
- break;
- default:
- func (stream, "z");
- break;
- }
- break;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- {
- int bitstart = *c++ - '0';
- int bitend = 0;
- while (*c >= '0' && *c <= '9')
- bitstart = (bitstart * 10) + *c++ - '0';
-
- switch (*c)
- {
- case '-':
- c++;
- while (*c >= '0' && *c <= '9')
- bitend = (bitend * 10) + *c++ - '0';
- if (!bitend)
- abort ();
- switch (*c)
- {
- case 'r':
- {
- long reg;
- reg = given >> bitstart;
- reg &= (2 << (bitend - bitstart)) - 1;
- func (stream, "%s", arm_regnames[reg]);
- }
- break;
- case 'd':
- {
- long reg;
- reg = given >> bitstart;
- reg &= (2 << (bitend - bitstart)) - 1;
- func (stream, "%d", reg);
- }
- break;
- case 'x':
- {
- long reg;
- reg = given >> bitstart;
- reg &= (2 << (bitend - bitstart)) - 1;
- func (stream, "0x%08x", reg);
-
- /* Some SWI instructions have special meanings. */
- if ((given & 0x0fffffff) == 0x0FF00000)
- func (stream, "\t; IMB");
- else if ((given & 0x0fffffff) == 0x0FF00001)
- func (stream, "\t; IMBRange");
- }
- break;
- case 'f':
- {
- long reg;
- reg = given >> bitstart;
- reg &= (2 << (bitend - bitstart)) - 1;
- if (reg > 7)
- func (stream, "#%s",
- arm_fp_const[reg & 7]);
- else
- func (stream, "f%d", reg);
- }
- break;
- default:
- abort ();
- }
- break;
- case '`':
- c++;
- if ((given & (1 << bitstart)) == 0)
- func (stream, "%c", *c);
- break;
- case '\'':
- c++;
- if ((given & (1 << bitstart)) != 0)
- func (stream, "%c", *c);
- break;
- case '?':
- ++c;
- if ((given & (1 << bitstart)) != 0)
- func (stream, "%c", *c++);
- else
- func (stream, "%c", *++c);
- break;
- default:
- abort ();
- }
- break;
-
- default:
- abort ();
- }
- }
- }
- else
- func (stream, "%c", *c);
- }
- return 4;
- }
- }
- abort ();
-}
-
-/* Print one instruction from PC on INFO->STREAM.
- Return the size of the instruction. */
-
-static int
-print_insn_thumb (pc, info, given)
- bfd_vma pc;
- struct disassemble_info * info;
- long given;
-{
- struct thumb_opcode * insn;
- void * stream = info->stream;
- fprintf_ftype func = info->fprintf_func;
-
- for (insn = thumb_opcodes; insn->assembler; insn++)
- {
- if ((given & insn->mask) == insn->value)
- {
- char * c = insn->assembler;
-
- /* Special processing for Thumb 2 instruction BL sequence: */
- if (!*c) /* check for empty (not NULL) assembler string */
- {
- info->bytes_per_chunk = 4;
- info->bytes_per_line = 4;
-
- func (stream, "%04x\tbl\t", given & 0xffff);
- (*info->print_address_func)
- (BDISP23 (given) * 2 + pc + 4, info);
- return 4;
- }
- else
- {
- info->bytes_per_chunk = 2;
- info->bytes_per_line = 4;
-
- given &= 0xffff;
- func (stream, "%04x\t", given);
-
- for (; *c; c++)
- {
- if (*c == '%')
- {
- int domaskpc = 0;
- int domasklr = 0;
-
- switch (*++c)
- {
- case '%':
- func (stream, "%%");
- break;
-
- case 'S':
- {
- long reg;
- reg = (given >> 3) & 0x7;
- if (given & (1 << 6))
- reg += 8;
- func (stream, "%s", arm_regnames[reg]);
- }
- break;
-
- case 'D':
- {
- long reg;
-
- reg = given & 0x7;
- if (given & (1 << 7))
- reg += 8;
- func (stream, "%s", arm_regnames[reg]);
- }
- break;
-
- case 'T':
- func (stream, "%s",
- arm_conditional [(given >> 8) & 0xf]);
- break;
-
- case 'N':
- if (given & (1 << 8))
- domasklr = 1;
- /* fall through */
- case 'O':
- if (*c == 'O' && (given & (1 << 8)))
- domaskpc = 1;
- /* fall through */
- case 'M':
- {
- int started = 0;
- int reg;
-
- func (stream, "{");
- /* It would be nice if we could spot
- ranges, and generate the rS-rE format: */
- for (reg = 0; (reg < 8); reg++)
- if ((given & (1 << reg)) != 0)
- {
- if (started)
- func (stream, ", ");
- started = 1;
- func (stream, "%s", arm_regnames[reg]);
- }
-
- if (domasklr)
- {
- if (started)
- func (stream, ", ");
- started = 1;
- func (stream, "lr");
- }
-
- if (domaskpc)
- {
- if (started)
- func (stream, ", ");
- func (stream, "pc");
- }
-
- func (stream, "}");
- }
- break;
-
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- {
- int bitstart = *c++ - '0';
- int bitend = 0;
-
- while (*c >= '0' && *c <= '9')
- bitstart = (bitstart * 10) + *c++ - '0';
-
- switch (*c)
- {
- case '-':
- {
- long reg;
-
- c++;
- while (*c >= '0' && *c <= '9')
- bitend = (bitend * 10) + *c++ - '0';
- if (!bitend)
- abort ();
- reg = given >> bitstart;
- reg &= (2 << (bitend - bitstart)) - 1;
- switch (*c)
- {
- case 'r':
- func (stream, "%s", arm_regnames[reg]);
- break;
-
- case 'd':
- func (stream, "%d", reg);
- break;
-
- case 'H':
- func (stream, "%d", reg << 1);
- break;
-
- case 'W':
- func (stream, "%d", reg << 2);
- break;
-
- case 'a':
- /* PC-relative address -- the bottom two
- bits of the address are dropped before
- the calculation. */
- info->print_address_func
- (((pc + 4) & ~3) + (reg << 2), info);
- break;
-
- case 'x':
- func (stream, "0x%04x", reg);
- break;
-
- case 'I':
- reg = ((reg ^ (1 << bitend)) - (1 << bitend));
- func (stream, "%d", reg);
- break;
-
- case 'B':
- reg = ((reg ^ (1 << bitend)) - (1 << bitend));
- (*info->print_address_func)
- (reg * 2 + pc + 4, info);
- break;
-
- default:
- abort ();
- }
- }
- break;
-
- case '\'':
- c++;
- if ((given & (1 << bitstart)) != 0)
- func (stream, "%c", *c);
- break;
-
- case '?':
- ++c;
- if ((given & (1 << bitstart)) != 0)
- func (stream, "%c", *c++);
- else
- func (stream, "%c", *++c);
- break;
-
- default:
- abort ();
- }
- }
- break;
-
- default:
- abort ();
- }
- }
- else
- func (stream, "%c", *c);
- }
- }
- return 2;
- }
- }
-
- /* no match */
- abort ();
-}
-
-/* Select a different register name set.
- Returns true if the name set selected is the APCS name set. */
-int
-arm_toggle_regnames ()
-{
- if (arm_regnames == arm_regnames_standard)
- arm_regnames = arm_regnames_apcs;
- else
- arm_regnames = arm_regnames_standard;
-
- return arm_regnames == arm_regnames_apcs;
-}
-
-static void
-parse_disassembler_options (options)
- char * options;
-{
- if (options == NULL)
- return;
-
- if (strncmp (options, "reg-names-", 10) == 0)
- {
- options += 10;
-
- if (strcmp (options, "std") == 0)
- arm_regnames = arm_regnames_standard;
- else if (strcmp (options, "apcs") == 0)
- arm_regnames = arm_regnames_apcs;
- else if (strcmp (options, "raw") == 0)
- arm_regnames = arm_regnames_raw;
- else
- fprintf (stderr, "Unrecognised register name set: %s\n", options);
- }
- else
- fprintf (stderr, "Unrecognised disassembler option: %s\n", options);
-
- return;
-}
-
-/* NOTE: There are no checks in these routines that the relevant number of data bytes exist */
-
-int
-print_insn_big_arm (pc, info)
- bfd_vma pc;
- struct disassemble_info * info;
-{
- unsigned char b[4];
- long given;
- int status;
- coff_symbol_type * cs;
- elf_symbol_type * es;
- int is_thumb;
-
- if (info->disassembler_options)
- {
- parse_disassembler_options (info->disassembler_options);
-
- /* To avoid repeated parsing of this option, we remove it here. */
- info->disassembler_options = NULL;
- }
-
- is_thumb = false;
- if (info->symbols != NULL)
- {
- if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
- {
- cs = coffsymbol (*info->symbols);
- is_thumb = ( cs->native->u.syment.n_sclass == C_THUMBEXT
- || cs->native->u.syment.n_sclass == C_THUMBSTAT
- || cs->native->u.syment.n_sclass == C_THUMBLABEL
- || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
- || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
- }
- else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
- {
- es = *(elf_symbol_type **)(info->symbols);
- is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
- STT_ARM_TFUNC;
- }
- }
-
- info->bytes_per_chunk = 4;
- info->display_endian = BFD_ENDIAN_BIG;
-
- /* Always fetch word aligned values. */
-
- status = (*info->read_memory_func) (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info);
- if (status != 0)
- {
- (*info->memory_error_func) (status, pc, info);
- return -1;
- }
-
- if (is_thumb)
- {
- if (pc & 0x2)
- {
- given = (b[2] << 8) | b[3];
-
- status = info->read_memory_func ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info);
- if (status != 0)
- {
- info->memory_error_func (status, pc + 4, info);
- return -1;
- }
-
- given |= (b[0] << 24) | (b[1] << 16);
- }
- else
- given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16);
- }
- else
- given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]);
-
- if (is_thumb)
- status = print_insn_thumb (pc, info, given);
- else
- status = print_insn_arm (pc, info, given);
-
- return status;
-}
-
-int
-print_insn_little_arm (pc, info)
- bfd_vma pc;
- struct disassemble_info * info;
-{
- unsigned char b[4];
- long given;
- int status;
- coff_symbol_type * cs;
- elf_symbol_type * es;
- int is_thumb;
-
- if (info->disassembler_options)
- {
- parse_disassembler_options (info->disassembler_options);
-
- /* To avoid repeated parsing of this option, we remove it here. */
- info->disassembler_options = NULL;
- }
-
- is_thumb = false;
-
- if (info->symbols != NULL)
- {
- if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
- {
- cs = coffsymbol (*info->symbols);
- is_thumb = ( cs->native->u.syment.n_sclass == C_THUMBEXT
- || cs->native->u.syment.n_sclass == C_THUMBSTAT
- || cs->native->u.syment.n_sclass == C_THUMBLABEL
- || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
- || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
- }
- else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
- {
- es = *(elf_symbol_type **)(info->symbols);
- is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
- STT_ARM_TFUNC;
- }
- }
-
- info->bytes_per_chunk = 4;
- info->display_endian = BFD_ENDIAN_LITTLE;
-
- status = (*info->read_memory_func) (pc, (bfd_byte *) &b[0], 4, info);
- if (status != 0 && is_thumb)
- {
- info->bytes_per_chunk = 2;
-
- status = info->read_memory_func (pc, (bfd_byte *) b, 2, info);
- b[3] = b[2] = 0;
- }
- if (status != 0)
- {
- (*info->memory_error_func) (status, pc, info);
- return -1;
- }
-
- given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24);
-
- if (is_thumb)
- status = print_insn_thumb (pc, info, given);
- else
- status = print_insn_arm (pc, info, given);
-
- return status;
-}
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