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0499d65b9b
instructions. Define MIPS16_ALL_ARGS and MIPS16_ALL_STATICS for
save/restore encoding of the args field.
* mips16-opc.c: Add MIPS16e save/restore opcodes.
* mips-dis.c (print_mips16_insn_arg): Handle printing of 'm'/'M'
codes for save/restore.
* config/tc-mips.c (mips16_ip): Add handling of 'm' and 'M' codes
for the MIPS16e save/restore instructions.
* gas/mips/mips.exp: Run new save/restore tests.
* gas/testsuite/gas/mips/mips16e-save.s: New test for generating
different styles of save/restore instructions.
* gas/testsuite/gas/mips/mips16e-save.d: New.
2027 lines
56 KiB
C
2027 lines
56 KiB
C
/* Print mips instructions for GDB, the GNU debugger, or for objdump.
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Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001, 2002, 2003, 2005
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Free Software Foundation, Inc.
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Contributed by Nobuyuki Hikichi(hikichi@sra.co.jp).
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This file is part of GDB, GAS, and the GNU binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "dis-asm.h"
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#include "libiberty.h"
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#include "opcode/mips.h"
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#include "opintl.h"
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/* FIXME: These are needed to figure out if the code is mips16 or
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not. The low bit of the address is often a good indicator. No
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symbol table is available when this code runs out in an embedded
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system as when it is used for disassembler support in a monitor. */
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#if !defined(EMBEDDED_ENV)
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#define SYMTAB_AVAILABLE 1
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#include "elf-bfd.h"
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#include "elf/mips.h"
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#endif
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/* Mips instructions are at maximum this many bytes long. */
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#define INSNLEN 4
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/* FIXME: These should be shared with gdb somehow. */
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struct mips_cp0sel_name
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{
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unsigned int cp0reg;
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unsigned int sel;
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const char * const name;
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};
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/* The mips16 register names. */
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static const char * const mips16_reg_names[] =
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{
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"s0", "s1", "v0", "v1", "a0", "a1", "a2", "a3"
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};
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static const char * const mips_gpr_names_numeric[32] =
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{
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"$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
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"$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
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"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
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"$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
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};
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static const char * const mips_gpr_names_oldabi[32] =
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{
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"zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
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"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
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"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
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"t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
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};
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static const char * const mips_gpr_names_newabi[32] =
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{
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"zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
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"a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3",
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"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
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"t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
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};
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static const char * const mips_fpr_names_numeric[32] =
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{
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"$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7",
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"$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15",
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"$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23",
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"$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31"
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};
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static const char * const mips_fpr_names_32[32] =
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{
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"fv0", "fv0f", "fv1", "fv1f", "ft0", "ft0f", "ft1", "ft1f",
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"ft2", "ft2f", "ft3", "ft3f", "fa0", "fa0f", "fa1", "fa1f",
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"ft4", "ft4f", "ft5", "ft5f", "fs0", "fs0f", "fs1", "fs1f",
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"fs2", "fs2f", "fs3", "fs3f", "fs4", "fs4f", "fs5", "fs5f"
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};
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static const char * const mips_fpr_names_n32[32] =
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{
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"fv0", "ft14", "fv1", "ft15", "ft0", "ft1", "ft2", "ft3",
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"ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3",
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"fa4", "fa5", "fa6", "fa7", "fs0", "ft8", "fs1", "ft9",
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"fs2", "ft10", "fs3", "ft11", "fs4", "ft12", "fs5", "ft13"
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};
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static const char * const mips_fpr_names_64[32] =
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{
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"fv0", "ft12", "fv1", "ft13", "ft0", "ft1", "ft2", "ft3",
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"ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3",
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"fa4", "fa5", "fa6", "fa7", "ft8", "ft9", "ft10", "ft11",
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"fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7"
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};
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static const char * const mips_cp0_names_numeric[32] =
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{
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"$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
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"$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
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"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
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"$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
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};
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static const char * const mips_cp0_names_mips3264[32] =
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{
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"c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
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"c0_context", "c0_pagemask", "c0_wired", "$7",
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"c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
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"c0_status", "c0_cause", "c0_epc", "c0_prid",
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"c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
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"c0_xcontext", "$21", "$22", "c0_debug",
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"c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
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"c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
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};
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static const struct mips_cp0sel_name mips_cp0sel_names_mips3264[] =
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{
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{ 16, 1, "c0_config1" },
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{ 16, 2, "c0_config2" },
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{ 16, 3, "c0_config3" },
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{ 18, 1, "c0_watchlo,1" },
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{ 18, 2, "c0_watchlo,2" },
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{ 18, 3, "c0_watchlo,3" },
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{ 18, 4, "c0_watchlo,4" },
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{ 18, 5, "c0_watchlo,5" },
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{ 18, 6, "c0_watchlo,6" },
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{ 18, 7, "c0_watchlo,7" },
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{ 19, 1, "c0_watchhi,1" },
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{ 19, 2, "c0_watchhi,2" },
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{ 19, 3, "c0_watchhi,3" },
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{ 19, 4, "c0_watchhi,4" },
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{ 19, 5, "c0_watchhi,5" },
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{ 19, 6, "c0_watchhi,6" },
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{ 19, 7, "c0_watchhi,7" },
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{ 25, 1, "c0_perfcnt,1" },
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{ 25, 2, "c0_perfcnt,2" },
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{ 25, 3, "c0_perfcnt,3" },
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{ 25, 4, "c0_perfcnt,4" },
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{ 25, 5, "c0_perfcnt,5" },
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{ 25, 6, "c0_perfcnt,6" },
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{ 25, 7, "c0_perfcnt,7" },
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{ 27, 1, "c0_cacheerr,1" },
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{ 27, 2, "c0_cacheerr,2" },
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{ 27, 3, "c0_cacheerr,3" },
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{ 28, 1, "c0_datalo" },
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{ 29, 1, "c0_datahi" }
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};
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static const char * const mips_cp0_names_mips3264r2[32] =
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{
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"c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
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"c0_context", "c0_pagemask", "c0_wired", "c0_hwrena",
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"c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
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"c0_status", "c0_cause", "c0_epc", "c0_prid",
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"c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
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"c0_xcontext", "$21", "$22", "c0_debug",
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"c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
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"c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
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};
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static const struct mips_cp0sel_name mips_cp0sel_names_mips3264r2[] =
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{
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{ 4, 1, "c0_contextconfig" },
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{ 5, 1, "c0_pagegrain" },
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{ 12, 1, "c0_intctl" },
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{ 12, 2, "c0_srsctl" },
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{ 12, 3, "c0_srsmap" },
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{ 15, 1, "c0_ebase" },
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{ 16, 1, "c0_config1" },
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{ 16, 2, "c0_config2" },
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{ 16, 3, "c0_config3" },
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{ 18, 1, "c0_watchlo,1" },
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{ 18, 2, "c0_watchlo,2" },
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{ 18, 3, "c0_watchlo,3" },
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{ 18, 4, "c0_watchlo,4" },
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{ 18, 5, "c0_watchlo,5" },
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{ 18, 6, "c0_watchlo,6" },
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{ 18, 7, "c0_watchlo,7" },
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{ 19, 1, "c0_watchhi,1" },
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{ 19, 2, "c0_watchhi,2" },
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{ 19, 3, "c0_watchhi,3" },
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{ 19, 4, "c0_watchhi,4" },
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{ 19, 5, "c0_watchhi,5" },
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{ 19, 6, "c0_watchhi,6" },
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{ 19, 7, "c0_watchhi,7" },
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{ 23, 1, "c0_tracecontrol" },
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{ 23, 2, "c0_tracecontrol2" },
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{ 23, 3, "c0_usertracedata" },
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{ 23, 4, "c0_tracebpc" },
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{ 25, 1, "c0_perfcnt,1" },
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{ 25, 2, "c0_perfcnt,2" },
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{ 25, 3, "c0_perfcnt,3" },
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{ 25, 4, "c0_perfcnt,4" },
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{ 25, 5, "c0_perfcnt,5" },
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{ 25, 6, "c0_perfcnt,6" },
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{ 25, 7, "c0_perfcnt,7" },
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{ 27, 1, "c0_cacheerr,1" },
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{ 27, 2, "c0_cacheerr,2" },
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{ 27, 3, "c0_cacheerr,3" },
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{ 28, 1, "c0_datalo" },
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{ 28, 2, "c0_taglo1" },
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{ 28, 3, "c0_datalo1" },
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{ 28, 4, "c0_taglo2" },
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{ 28, 5, "c0_datalo2" },
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{ 28, 6, "c0_taglo3" },
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{ 28, 7, "c0_datalo3" },
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{ 29, 1, "c0_datahi" },
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{ 29, 2, "c0_taghi1" },
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{ 29, 3, "c0_datahi1" },
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{ 29, 4, "c0_taghi2" },
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{ 29, 5, "c0_datahi2" },
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{ 29, 6, "c0_taghi3" },
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{ 29, 7, "c0_datahi3" },
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};
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/* SB-1: MIPS64 (mips_cp0_names_mips3264) with minor mods. */
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static const char * const mips_cp0_names_sb1[32] =
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{
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"c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
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"c0_context", "c0_pagemask", "c0_wired", "$7",
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"c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
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"c0_status", "c0_cause", "c0_epc", "c0_prid",
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"c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
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"c0_xcontext", "$21", "$22", "c0_debug",
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"c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr_i",
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"c0_taglo_i", "c0_taghi_i", "c0_errorepc", "c0_desave",
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};
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static const struct mips_cp0sel_name mips_cp0sel_names_sb1[] =
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{
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{ 16, 1, "c0_config1" },
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{ 18, 1, "c0_watchlo,1" },
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{ 19, 1, "c0_watchhi,1" },
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{ 22, 0, "c0_perftrace" },
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{ 23, 3, "c0_edebug" },
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{ 25, 1, "c0_perfcnt,1" },
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{ 25, 2, "c0_perfcnt,2" },
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{ 25, 3, "c0_perfcnt,3" },
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{ 25, 4, "c0_perfcnt,4" },
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{ 25, 5, "c0_perfcnt,5" },
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{ 25, 6, "c0_perfcnt,6" },
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{ 25, 7, "c0_perfcnt,7" },
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{ 26, 1, "c0_buserr_pa" },
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{ 27, 1, "c0_cacheerr_d" },
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{ 27, 3, "c0_cacheerr_d_pa" },
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{ 28, 1, "c0_datalo_i" },
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{ 28, 2, "c0_taglo_d" },
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{ 28, 3, "c0_datalo_d" },
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{ 29, 1, "c0_datahi_i" },
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{ 29, 2, "c0_taghi_d" },
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{ 29, 3, "c0_datahi_d" },
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};
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static const char * const mips_hwr_names_numeric[32] =
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{
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"$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
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"$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
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"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
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"$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
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};
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static const char * const mips_hwr_names_mips3264r2[32] =
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{
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"hwr_cpunum", "hwr_synci_step", "hwr_cc", "hwr_ccres",
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"$4", "$5", "$6", "$7",
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"$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
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"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
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"$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
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};
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struct mips_abi_choice
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{
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const char * name;
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const char * const *gpr_names;
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const char * const *fpr_names;
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};
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struct mips_abi_choice mips_abi_choices[] =
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{
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{ "numeric", mips_gpr_names_numeric, mips_fpr_names_numeric },
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{ "32", mips_gpr_names_oldabi, mips_fpr_names_32 },
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{ "n32", mips_gpr_names_newabi, mips_fpr_names_n32 },
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{ "64", mips_gpr_names_newabi, mips_fpr_names_64 },
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};
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|
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struct mips_arch_choice
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{
|
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const char *name;
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int bfd_mach_valid;
|
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unsigned long bfd_mach;
|
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int processor;
|
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int isa;
|
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const char * const *cp0_names;
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const struct mips_cp0sel_name *cp0sel_names;
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unsigned int cp0sel_names_len;
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const char * const *hwr_names;
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};
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||
|
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const struct mips_arch_choice mips_arch_choices[] =
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{
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{ "numeric", 0, 0, 0, 0,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "r3000", 1, bfd_mach_mips3000, CPU_R3000, ISA_MIPS1,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "r3900", 1, bfd_mach_mips3900, CPU_R3900, ISA_MIPS1,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "r4000", 1, bfd_mach_mips4000, CPU_R4000, ISA_MIPS3,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "r4010", 1, bfd_mach_mips4010, CPU_R4010, ISA_MIPS2,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "vr4100", 1, bfd_mach_mips4100, CPU_VR4100, ISA_MIPS3,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "vr4111", 1, bfd_mach_mips4111, CPU_R4111, ISA_MIPS3,
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||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr4120", 1, bfd_mach_mips4120, CPU_VR4120, ISA_MIPS3,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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||
{ "r4300", 1, bfd_mach_mips4300, CPU_R4300, ISA_MIPS3,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "r4400", 1, bfd_mach_mips4400, CPU_R4400, ISA_MIPS3,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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||
{ "r4600", 1, bfd_mach_mips4600, CPU_R4600, ISA_MIPS3,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
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{ "r4650", 1, bfd_mach_mips4650, CPU_R4650, ISA_MIPS3,
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mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r5000", 1, bfd_mach_mips5000, CPU_R5000, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr5400", 1, bfd_mach_mips5400, CPU_VR5400, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr5500", 1, bfd_mach_mips5500, CPU_VR5500, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r6000", 1, bfd_mach_mips6000, CPU_R6000, ISA_MIPS2,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "rm7000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "rm9000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r8000", 1, bfd_mach_mips8000, CPU_R8000, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r10000", 1, bfd_mach_mips10000, CPU_R10000, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r12000", 1, bfd_mach_mips12000, CPU_R12000, ISA_MIPS4,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "mips5", 1, bfd_mach_mips5, CPU_MIPS5, ISA_MIPS5,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
|
||
/* For stock MIPS32, disassemble all applicable MIPS-specified ASEs.
|
||
Note that MIPS-3D and MDMX are not applicable to MIPS32. (See
|
||
_MIPS32 Architecture For Programmers Volume I: Introduction to the
|
||
MIPS32 Architecture_ (MIPS Document Number MD00082, Revision 0.95),
|
||
page 1. */
|
||
{ "mips32", 1, bfd_mach_mipsisa32, CPU_MIPS32,
|
||
ISA_MIPS32 | INSN_MIPS16 | INSN_DSP,
|
||
mips_cp0_names_mips3264,
|
||
mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
|
||
mips_hwr_names_numeric },
|
||
|
||
{ "mips32r2", 1, bfd_mach_mipsisa32r2, CPU_MIPS32R2,
|
||
ISA_MIPS32R2 | INSN_MIPS16 | INSN_DSP | INSN_MT,
|
||
mips_cp0_names_mips3264r2,
|
||
mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
|
||
mips_hwr_names_mips3264r2 },
|
||
|
||
/* For stock MIPS64, disassemble all applicable MIPS-specified ASEs. */
|
||
{ "mips64", 1, bfd_mach_mipsisa64, CPU_MIPS64,
|
||
ISA_MIPS64 | INSN_MIPS16 | INSN_MIPS3D | INSN_MDMX | INSN_DSP,
|
||
mips_cp0_names_mips3264,
|
||
mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
|
||
mips_hwr_names_numeric },
|
||
|
||
{ "mips64r2", 1, bfd_mach_mipsisa64r2, CPU_MIPS64R2,
|
||
ISA_MIPS64R2 | INSN_MIPS16 | INSN_MIPS3D | INSN_MDMX | INSN_DSP,
|
||
mips_cp0_names_mips3264r2,
|
||
mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
|
||
mips_hwr_names_mips3264r2 },
|
||
|
||
{ "sb1", 1, bfd_mach_mips_sb1, CPU_SB1,
|
||
ISA_MIPS64 | INSN_MIPS3D | INSN_SB1,
|
||
mips_cp0_names_sb1,
|
||
mips_cp0sel_names_sb1, ARRAY_SIZE (mips_cp0sel_names_sb1),
|
||
mips_hwr_names_numeric },
|
||
|
||
/* This entry, mips16, is here only for ISA/processor selection; do
|
||
not print its name. */
|
||
{ "", 1, bfd_mach_mips16, CPU_MIPS16, ISA_MIPS3 | INSN_MIPS16,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
};
|
||
|
||
/* ISA and processor type to disassemble for, and register names to use.
|
||
set_default_mips_dis_options and parse_mips_dis_options fill in these
|
||
values. */
|
||
static int mips_processor;
|
||
static int mips_isa;
|
||
static const char * const *mips_gpr_names;
|
||
static const char * const *mips_fpr_names;
|
||
static const char * const *mips_cp0_names;
|
||
static const struct mips_cp0sel_name *mips_cp0sel_names;
|
||
static int mips_cp0sel_names_len;
|
||
static const char * const *mips_hwr_names;
|
||
|
||
/* Other options */
|
||
static int no_aliases; /* If set disassemble as most general inst. */
|
||
|
||
static const struct mips_abi_choice *
|
||
choose_abi_by_name (const char *name, unsigned int namelen)
|
||
{
|
||
const struct mips_abi_choice *c;
|
||
unsigned int i;
|
||
|
||
for (i = 0, c = NULL; i < ARRAY_SIZE (mips_abi_choices) && c == NULL; i++)
|
||
if (strncmp (mips_abi_choices[i].name, name, namelen) == 0
|
||
&& strlen (mips_abi_choices[i].name) == namelen)
|
||
c = &mips_abi_choices[i];
|
||
|
||
return c;
|
||
}
|
||
|
||
static const struct mips_arch_choice *
|
||
choose_arch_by_name (const char *name, unsigned int namelen)
|
||
{
|
||
const struct mips_arch_choice *c = NULL;
|
||
unsigned int i;
|
||
|
||
for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
|
||
if (strncmp (mips_arch_choices[i].name, name, namelen) == 0
|
||
&& strlen (mips_arch_choices[i].name) == namelen)
|
||
c = &mips_arch_choices[i];
|
||
|
||
return c;
|
||
}
|
||
|
||
static const struct mips_arch_choice *
|
||
choose_arch_by_number (unsigned long mach)
|
||
{
|
||
static unsigned long hint_bfd_mach;
|
||
static const struct mips_arch_choice *hint_arch_choice;
|
||
const struct mips_arch_choice *c;
|
||
unsigned int i;
|
||
|
||
/* We optimize this because even if the user specifies no
|
||
flags, this will be done for every instruction! */
|
||
if (hint_bfd_mach == mach
|
||
&& hint_arch_choice != NULL
|
||
&& hint_arch_choice->bfd_mach == hint_bfd_mach)
|
||
return hint_arch_choice;
|
||
|
||
for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
|
||
{
|
||
if (mips_arch_choices[i].bfd_mach_valid
|
||
&& mips_arch_choices[i].bfd_mach == mach)
|
||
{
|
||
c = &mips_arch_choices[i];
|
||
hint_bfd_mach = mach;
|
||
hint_arch_choice = c;
|
||
}
|
||
}
|
||
return c;
|
||
}
|
||
|
||
/* Check if the object uses NewABI conventions. */
|
||
|
||
static int
|
||
is_newabi (Elf_Internal_Ehdr *header)
|
||
{
|
||
/* There are no old-style ABIs which use 64-bit ELF. */
|
||
if (header->e_ident[EI_CLASS] == ELFCLASS64)
|
||
return 1;
|
||
|
||
/* If a 32-bit ELF file, n32 is a new-style ABI. */
|
||
if ((header->e_flags & EF_MIPS_ABI2) != 0)
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
set_default_mips_dis_options (struct disassemble_info *info)
|
||
{
|
||
const struct mips_arch_choice *chosen_arch;
|
||
|
||
/* Defaults: mipsIII/r3000 (?!), (o)32-style ("oldabi") GPR names,
|
||
and numeric FPR, CP0 register, and HWR names. */
|
||
mips_isa = ISA_MIPS3;
|
||
mips_processor = CPU_R3000;
|
||
mips_gpr_names = mips_gpr_names_oldabi;
|
||
mips_fpr_names = mips_fpr_names_numeric;
|
||
mips_cp0_names = mips_cp0_names_numeric;
|
||
mips_cp0sel_names = NULL;
|
||
mips_cp0sel_names_len = 0;
|
||
mips_hwr_names = mips_hwr_names_numeric;
|
||
no_aliases = 0;
|
||
|
||
/* If an ELF "newabi" binary, use the n32/(n)64 GPR names. */
|
||
if (info->flavour == bfd_target_elf_flavour && info->section != NULL)
|
||
{
|
||
Elf_Internal_Ehdr *header;
|
||
|
||
header = elf_elfheader (info->section->owner);
|
||
if (is_newabi (header))
|
||
mips_gpr_names = mips_gpr_names_newabi;
|
||
}
|
||
|
||
/* Set ISA, architecture, and cp0 register names as best we can. */
|
||
#if ! SYMTAB_AVAILABLE
|
||
/* This is running out on a target machine, not in a host tool.
|
||
FIXME: Where does mips_target_info come from? */
|
||
target_processor = mips_target_info.processor;
|
||
mips_isa = mips_target_info.isa;
|
||
#else
|
||
chosen_arch = choose_arch_by_number (info->mach);
|
||
if (chosen_arch != NULL)
|
||
{
|
||
mips_processor = chosen_arch->processor;
|
||
mips_isa = chosen_arch->isa;
|
||
mips_cp0_names = chosen_arch->cp0_names;
|
||
mips_cp0sel_names = chosen_arch->cp0sel_names;
|
||
mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
|
||
mips_hwr_names = chosen_arch->hwr_names;
|
||
}
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
parse_mips_dis_option (const char *option, unsigned int len)
|
||
{
|
||
unsigned int i, optionlen, vallen;
|
||
const char *val;
|
||
const struct mips_abi_choice *chosen_abi;
|
||
const struct mips_arch_choice *chosen_arch;
|
||
|
||
/* Try to match options that are simple flags */
|
||
if (strncmp (option, "no-aliases", 10) == 0)
|
||
{
|
||
no_aliases = 1;
|
||
return;
|
||
}
|
||
|
||
/* Look for the = that delimits the end of the option name. */
|
||
for (i = 0; i < len; i++)
|
||
if (option[i] == '=')
|
||
break;
|
||
|
||
if (i == 0) /* Invalid option: no name before '='. */
|
||
return;
|
||
if (i == len) /* Invalid option: no '='. */
|
||
return;
|
||
if (i == (len - 1)) /* Invalid option: no value after '='. */
|
||
return;
|
||
|
||
optionlen = i;
|
||
val = option + (optionlen + 1);
|
||
vallen = len - (optionlen + 1);
|
||
|
||
if (strncmp ("gpr-names", option, optionlen) == 0
|
||
&& strlen ("gpr-names") == optionlen)
|
||
{
|
||
chosen_abi = choose_abi_by_name (val, vallen);
|
||
if (chosen_abi != NULL)
|
||
mips_gpr_names = chosen_abi->gpr_names;
|
||
return;
|
||
}
|
||
|
||
if (strncmp ("fpr-names", option, optionlen) == 0
|
||
&& strlen ("fpr-names") == optionlen)
|
||
{
|
||
chosen_abi = choose_abi_by_name (val, vallen);
|
||
if (chosen_abi != NULL)
|
||
mips_fpr_names = chosen_abi->fpr_names;
|
||
return;
|
||
}
|
||
|
||
if (strncmp ("cp0-names", option, optionlen) == 0
|
||
&& strlen ("cp0-names") == optionlen)
|
||
{
|
||
chosen_arch = choose_arch_by_name (val, vallen);
|
||
if (chosen_arch != NULL)
|
||
{
|
||
mips_cp0_names = chosen_arch->cp0_names;
|
||
mips_cp0sel_names = chosen_arch->cp0sel_names;
|
||
mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (strncmp ("hwr-names", option, optionlen) == 0
|
||
&& strlen ("hwr-names") == optionlen)
|
||
{
|
||
chosen_arch = choose_arch_by_name (val, vallen);
|
||
if (chosen_arch != NULL)
|
||
mips_hwr_names = chosen_arch->hwr_names;
|
||
return;
|
||
}
|
||
|
||
if (strncmp ("reg-names", option, optionlen) == 0
|
||
&& strlen ("reg-names") == optionlen)
|
||
{
|
||
/* We check both ABI and ARCH here unconditionally, so
|
||
that "numeric" will do the desirable thing: select
|
||
numeric register names for all registers. Other than
|
||
that, a given name probably won't match both. */
|
||
chosen_abi = choose_abi_by_name (val, vallen);
|
||
if (chosen_abi != NULL)
|
||
{
|
||
mips_gpr_names = chosen_abi->gpr_names;
|
||
mips_fpr_names = chosen_abi->fpr_names;
|
||
}
|
||
chosen_arch = choose_arch_by_name (val, vallen);
|
||
if (chosen_arch != NULL)
|
||
{
|
||
mips_cp0_names = chosen_arch->cp0_names;
|
||
mips_cp0sel_names = chosen_arch->cp0sel_names;
|
||
mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
|
||
mips_hwr_names = chosen_arch->hwr_names;
|
||
}
|
||
return;
|
||
}
|
||
|
||
/* Invalid option. */
|
||
}
|
||
|
||
static void
|
||
parse_mips_dis_options (const char *options)
|
||
{
|
||
const char *option_end;
|
||
|
||
if (options == NULL)
|
||
return;
|
||
|
||
while (*options != '\0')
|
||
{
|
||
/* Skip empty options. */
|
||
if (*options == ',')
|
||
{
|
||
options++;
|
||
continue;
|
||
}
|
||
|
||
/* We know that *options is neither NUL or a comma. */
|
||
option_end = options + 1;
|
||
while (*option_end != ',' && *option_end != '\0')
|
||
option_end++;
|
||
|
||
parse_mips_dis_option (options, option_end - options);
|
||
|
||
/* Go on to the next one. If option_end points to a comma, it
|
||
will be skipped above. */
|
||
options = option_end;
|
||
}
|
||
}
|
||
|
||
static const struct mips_cp0sel_name *
|
||
lookup_mips_cp0sel_name (const struct mips_cp0sel_name *names,
|
||
unsigned int len,
|
||
unsigned int cp0reg,
|
||
unsigned int sel)
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = 0; i < len; i++)
|
||
if (names[i].cp0reg == cp0reg && names[i].sel == sel)
|
||
return &names[i];
|
||
return NULL;
|
||
}
|
||
|
||
/* Print insn arguments for 32/64-bit code. */
|
||
|
||
static void
|
||
print_insn_args (const char *d,
|
||
register unsigned long int l,
|
||
bfd_vma pc,
|
||
struct disassemble_info *info)
|
||
{
|
||
int op, delta;
|
||
unsigned int lsb, msb, msbd;
|
||
|
||
lsb = 0;
|
||
|
||
for (; *d != '\0'; d++)
|
||
{
|
||
switch (*d)
|
||
{
|
||
case ',':
|
||
case '(':
|
||
case ')':
|
||
case '[':
|
||
case ']':
|
||
(*info->fprintf_func) (info->stream, "%c", *d);
|
||
break;
|
||
|
||
case '+':
|
||
/* Extension character; switch for second char. */
|
||
d++;
|
||
switch (*d)
|
||
{
|
||
case '\0':
|
||
/* xgettext:c-format */
|
||
(*info->fprintf_func) (info->stream,
|
||
_("# internal error, incomplete extension sequence (+)"));
|
||
return;
|
||
|
||
case 'A':
|
||
lsb = (l >> OP_SH_SHAMT) & OP_MASK_SHAMT;
|
||
(*info->fprintf_func) (info->stream, "0x%x", lsb);
|
||
break;
|
||
|
||
case 'B':
|
||
msb = (l >> OP_SH_INSMSB) & OP_MASK_INSMSB;
|
||
(*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
|
||
break;
|
||
|
||
case 'C':
|
||
case 'H':
|
||
msbd = (l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD;
|
||
(*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
|
||
break;
|
||
|
||
case 'D':
|
||
{
|
||
const struct mips_cp0sel_name *n;
|
||
unsigned int cp0reg, sel;
|
||
|
||
cp0reg = (l >> OP_SH_RD) & OP_MASK_RD;
|
||
sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
|
||
|
||
/* CP0 register including 'sel' code for mtcN (et al.), to be
|
||
printed textually if known. If not known, print both
|
||
CP0 register name and sel numerically since CP0 register
|
||
with sel 0 may have a name unrelated to register being
|
||
printed. */
|
||
n = lookup_mips_cp0sel_name(mips_cp0sel_names,
|
||
mips_cp0sel_names_len, cp0reg, sel);
|
||
if (n != NULL)
|
||
(*info->fprintf_func) (info->stream, "%s", n->name);
|
||
else
|
||
(*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
|
||
break;
|
||
}
|
||
|
||
case 'E':
|
||
lsb = ((l >> OP_SH_SHAMT) & OP_MASK_SHAMT) + 32;
|
||
(*info->fprintf_func) (info->stream, "0x%x", lsb);
|
||
break;
|
||
|
||
case 'F':
|
||
msb = ((l >> OP_SH_INSMSB) & OP_MASK_INSMSB) + 32;
|
||
(*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
|
||
break;
|
||
|
||
case 'G':
|
||
msbd = ((l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD) + 32;
|
||
(*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
|
||
break;
|
||
|
||
case 't': /* Coprocessor 0 reg name */
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_cp0_names[(l >> OP_SH_RT) &
|
||
OP_MASK_RT]);
|
||
break;
|
||
|
||
case 'T': /* Coprocessor 0 reg name */
|
||
{
|
||
const struct mips_cp0sel_name *n;
|
||
unsigned int cp0reg, sel;
|
||
|
||
cp0reg = (l >> OP_SH_RT) & OP_MASK_RT;
|
||
sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
|
||
|
||
/* CP0 register including 'sel' code for mftc0, to be
|
||
printed textually if known. If not known, print both
|
||
CP0 register name and sel numerically since CP0 register
|
||
with sel 0 may have a name unrelated to register being
|
||
printed. */
|
||
n = lookup_mips_cp0sel_name(mips_cp0sel_names,
|
||
mips_cp0sel_names_len, cp0reg, sel);
|
||
if (n != NULL)
|
||
(*info->fprintf_func) (info->stream, "%s", n->name);
|
||
else
|
||
(*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
|
||
break;
|
||
}
|
||
|
||
default:
|
||
/* xgettext:c-format */
|
||
(*info->fprintf_func) (info->stream,
|
||
_("# internal error, undefined extension sequence (+%c)"),
|
||
*d);
|
||
return;
|
||
}
|
||
break;
|
||
|
||
case '3':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_SA3) & OP_MASK_SA3);
|
||
break;
|
||
|
||
case '4':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_SA4) & OP_MASK_SA4);
|
||
break;
|
||
|
||
case '5':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_IMM8) & OP_MASK_IMM8);
|
||
break;
|
||
|
||
case '6':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_RS) & OP_MASK_RS);
|
||
break;
|
||
|
||
case '7':
|
||
(*info->fprintf_func) (info->stream, "$ac%ld",
|
||
(l >> OP_SH_DSPACC) & OP_MASK_DSPACC);
|
||
break;
|
||
|
||
case '8':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_WRDSP) & OP_MASK_WRDSP);
|
||
break;
|
||
|
||
case '9':
|
||
(*info->fprintf_func) (info->stream, "$ac%ld",
|
||
(l >> OP_SH_DSPACC_S) & OP_MASK_DSPACC_S);
|
||
break;
|
||
|
||
case '0': /* dsp 6-bit signed immediate in bit 20 */
|
||
delta = ((l >> OP_SH_DSPSFT) & OP_MASK_DSPSFT);
|
||
if (delta & 0x20) /* test sign bit */
|
||
delta |= ~OP_MASK_DSPSFT;
|
||
(*info->fprintf_func) (info->stream, "%d", delta);
|
||
break;
|
||
|
||
case ':': /* dsp 7-bit signed immediate in bit 19 */
|
||
delta = ((l >> OP_SH_DSPSFT_7) & OP_MASK_DSPSFT_7);
|
||
if (delta & 0x40) /* test sign bit */
|
||
delta |= ~OP_MASK_DSPSFT_7;
|
||
(*info->fprintf_func) (info->stream, "%d", delta);
|
||
break;
|
||
|
||
case '\'':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_RDDSP) & OP_MASK_RDDSP);
|
||
break;
|
||
|
||
case '@': /* dsp 10-bit signed immediate in bit 16 */
|
||
delta = ((l >> OP_SH_IMM10) & OP_MASK_IMM10);
|
||
if (delta & 0x200) /* test sign bit */
|
||
delta |= ~OP_MASK_IMM10;
|
||
(*info->fprintf_func) (info->stream, "%d", delta);
|
||
break;
|
||
|
||
case '!':
|
||
(*info->fprintf_func) (info->stream, "%ld",
|
||
(l >> OP_SH_MT_U) & OP_MASK_MT_U);
|
||
break;
|
||
|
||
case '$':
|
||
(*info->fprintf_func) (info->stream, "%ld",
|
||
(l >> OP_SH_MT_H) & OP_MASK_MT_H);
|
||
break;
|
||
|
||
case '*':
|
||
(*info->fprintf_func) (info->stream, "$ac%ld",
|
||
(l >> OP_SH_MTACC_T) & OP_MASK_MTACC_T);
|
||
break;
|
||
|
||
case '&':
|
||
(*info->fprintf_func) (info->stream, "$ac%ld",
|
||
(l >> OP_SH_MTACC_D) & OP_MASK_MTACC_D);
|
||
break;
|
||
|
||
case 'g':
|
||
/* Coprocessor register for CTTC1, MTTC2, MTHC2, CTTC2. */
|
||
(*info->fprintf_func) (info->stream, "$%ld",
|
||
(l >> OP_SH_RD) & OP_MASK_RD);
|
||
break;
|
||
|
||
case 's':
|
||
case 'b':
|
||
case 'r':
|
||
case 'v':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[(l >> OP_SH_RS) & OP_MASK_RS]);
|
||
break;
|
||
|
||
case 't':
|
||
case 'w':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
|
||
break;
|
||
|
||
case 'i':
|
||
case 'u':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE);
|
||
break;
|
||
|
||
case 'j': /* Same as i, but sign-extended. */
|
||
case 'o':
|
||
delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
|
||
if (delta & 0x8000)
|
||
delta |= ~0xffff;
|
||
(*info->fprintf_func) (info->stream, "%d",
|
||
delta);
|
||
break;
|
||
|
||
case 'h':
|
||
(*info->fprintf_func) (info->stream, "0x%x",
|
||
(unsigned int) ((l >> OP_SH_PREFX)
|
||
& OP_MASK_PREFX));
|
||
break;
|
||
|
||
case 'k':
|
||
(*info->fprintf_func) (info->stream, "0x%x",
|
||
(unsigned int) ((l >> OP_SH_CACHE)
|
||
& OP_MASK_CACHE));
|
||
break;
|
||
|
||
case 'a':
|
||
info->target = (((pc + 4) & ~(bfd_vma) 0x0fffffff)
|
||
| (((l >> OP_SH_TARGET) & OP_MASK_TARGET) << 2));
|
||
(*info->print_address_func) (info->target, info);
|
||
break;
|
||
|
||
case 'p':
|
||
/* Sign extend the displacement. */
|
||
delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
|
||
if (delta & 0x8000)
|
||
delta |= ~0xffff;
|
||
info->target = (delta << 2) + pc + INSNLEN;
|
||
(*info->print_address_func) (info->target, info);
|
||
break;
|
||
|
||
case 'd':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
|
||
break;
|
||
|
||
case 'U':
|
||
{
|
||
/* First check for both rd and rt being equal. */
|
||
unsigned int reg = (l >> OP_SH_RD) & OP_MASK_RD;
|
||
if (reg == ((l >> OP_SH_RT) & OP_MASK_RT))
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[reg]);
|
||
else
|
||
{
|
||
/* If one is zero use the other. */
|
||
if (reg == 0)
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
|
||
else if (((l >> OP_SH_RT) & OP_MASK_RT) == 0)
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[reg]);
|
||
else /* Bogus, result depends on processor. */
|
||
(*info->fprintf_func) (info->stream, "%s or %s",
|
||
mips_gpr_names[reg],
|
||
mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'z':
|
||
(*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
|
||
break;
|
||
|
||
case '<':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_SHAMT) & OP_MASK_SHAMT);
|
||
break;
|
||
|
||
case 'c':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_CODE) & OP_MASK_CODE);
|
||
break;
|
||
|
||
case 'q':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_CODE2) & OP_MASK_CODE2);
|
||
break;
|
||
|
||
case 'C':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_COPZ) & OP_MASK_COPZ);
|
||
break;
|
||
|
||
case 'B':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
|
||
(l >> OP_SH_CODE20) & OP_MASK_CODE20);
|
||
break;
|
||
|
||
case 'J':
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_CODE19) & OP_MASK_CODE19);
|
||
break;
|
||
|
||
case 'S':
|
||
case 'V':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_fpr_names[(l >> OP_SH_FS) & OP_MASK_FS]);
|
||
break;
|
||
|
||
case 'T':
|
||
case 'W':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_fpr_names[(l >> OP_SH_FT) & OP_MASK_FT]);
|
||
break;
|
||
|
||
case 'D':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_fpr_names[(l >> OP_SH_FD) & OP_MASK_FD]);
|
||
break;
|
||
|
||
case 'R':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_fpr_names[(l >> OP_SH_FR) & OP_MASK_FR]);
|
||
break;
|
||
|
||
case 'E':
|
||
/* Coprocessor register for lwcN instructions, et al.
|
||
|
||
Note that there is no load/store cp0 instructions, and
|
||
that FPU (cp1) instructions disassemble this field using
|
||
'T' format. Therefore, until we gain understanding of
|
||
cp2 register names, we can simply print the register
|
||
numbers. */
|
||
(*info->fprintf_func) (info->stream, "$%ld",
|
||
(l >> OP_SH_RT) & OP_MASK_RT);
|
||
break;
|
||
|
||
case 'G':
|
||
/* Coprocessor register for mtcN instructions, et al. Note
|
||
that FPU (cp1) instructions disassemble this field using
|
||
'S' format. Therefore, we only need to worry about cp0,
|
||
cp2, and cp3. */
|
||
op = (l >> OP_SH_OP) & OP_MASK_OP;
|
||
if (op == OP_OP_COP0)
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_cp0_names[(l >> OP_SH_RD) & OP_MASK_RD]);
|
||
else
|
||
(*info->fprintf_func) (info->stream, "$%ld",
|
||
(l >> OP_SH_RD) & OP_MASK_RD);
|
||
break;
|
||
|
||
case 'K':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_hwr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
|
||
break;
|
||
|
||
case 'N':
|
||
(*info->fprintf_func) (info->stream, "$fcc%ld",
|
||
(l >> OP_SH_BCC) & OP_MASK_BCC);
|
||
break;
|
||
|
||
case 'M':
|
||
(*info->fprintf_func) (info->stream, "$fcc%ld",
|
||
(l >> OP_SH_CCC) & OP_MASK_CCC);
|
||
break;
|
||
|
||
case 'P':
|
||
(*info->fprintf_func) (info->stream, "%ld",
|
||
(l >> OP_SH_PERFREG) & OP_MASK_PERFREG);
|
||
break;
|
||
|
||
case 'e':
|
||
(*info->fprintf_func) (info->stream, "%ld",
|
||
(l >> OP_SH_VECBYTE) & OP_MASK_VECBYTE);
|
||
break;
|
||
|
||
case '%':
|
||
(*info->fprintf_func) (info->stream, "%ld",
|
||
(l >> OP_SH_VECALIGN) & OP_MASK_VECALIGN);
|
||
break;
|
||
|
||
case 'H':
|
||
(*info->fprintf_func) (info->stream, "%ld",
|
||
(l >> OP_SH_SEL) & OP_MASK_SEL);
|
||
break;
|
||
|
||
case 'O':
|
||
(*info->fprintf_func) (info->stream, "%ld",
|
||
(l >> OP_SH_ALN) & OP_MASK_ALN);
|
||
break;
|
||
|
||
case 'Q':
|
||
{
|
||
unsigned int vsel = (l >> OP_SH_VSEL) & OP_MASK_VSEL;
|
||
|
||
if ((vsel & 0x10) == 0)
|
||
{
|
||
int fmt;
|
||
|
||
vsel &= 0x0f;
|
||
for (fmt = 0; fmt < 3; fmt++, vsel >>= 1)
|
||
if ((vsel & 1) == 0)
|
||
break;
|
||
(*info->fprintf_func) (info->stream, "$v%ld[%d]",
|
||
(l >> OP_SH_FT) & OP_MASK_FT,
|
||
vsel >> 1);
|
||
}
|
||
else if ((vsel & 0x08) == 0)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "$v%ld",
|
||
(l >> OP_SH_FT) & OP_MASK_FT);
|
||
}
|
||
else
|
||
{
|
||
(*info->fprintf_func) (info->stream, "0x%lx",
|
||
(l >> OP_SH_FT) & OP_MASK_FT);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'X':
|
||
(*info->fprintf_func) (info->stream, "$v%ld",
|
||
(l >> OP_SH_FD) & OP_MASK_FD);
|
||
break;
|
||
|
||
case 'Y':
|
||
(*info->fprintf_func) (info->stream, "$v%ld",
|
||
(l >> OP_SH_FS) & OP_MASK_FS);
|
||
break;
|
||
|
||
case 'Z':
|
||
(*info->fprintf_func) (info->stream, "$v%ld",
|
||
(l >> OP_SH_FT) & OP_MASK_FT);
|
||
break;
|
||
|
||
default:
|
||
/* xgettext:c-format */
|
||
(*info->fprintf_func) (info->stream,
|
||
_("# internal error, undefined modifier(%c)"),
|
||
*d);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Print the mips instruction at address MEMADDR in debugged memory,
|
||
on using INFO. Returns length of the instruction, in bytes, which is
|
||
always INSNLEN. BIGENDIAN must be 1 if this is big-endian code, 0 if
|
||
this is little-endian code. */
|
||
|
||
static int
|
||
print_insn_mips (bfd_vma memaddr,
|
||
unsigned long int word,
|
||
struct disassemble_info *info)
|
||
{
|
||
const struct mips_opcode *op;
|
||
static bfd_boolean init = 0;
|
||
static const struct mips_opcode *mips_hash[OP_MASK_OP + 1];
|
||
|
||
/* Build a hash table to shorten the search time. */
|
||
if (! init)
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = 0; i <= OP_MASK_OP; i++)
|
||
{
|
||
for (op = mips_opcodes; op < &mips_opcodes[NUMOPCODES]; op++)
|
||
{
|
||
if (op->pinfo == INSN_MACRO
|
||
|| (no_aliases && (op->pinfo2 & INSN2_ALIAS)))
|
||
continue;
|
||
if (i == ((op->match >> OP_SH_OP) & OP_MASK_OP))
|
||
{
|
||
mips_hash[i] = op;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
init = 1;
|
||
}
|
||
|
||
info->bytes_per_chunk = INSNLEN;
|
||
info->display_endian = info->endian;
|
||
info->insn_info_valid = 1;
|
||
info->branch_delay_insns = 0;
|
||
info->data_size = 0;
|
||
info->insn_type = dis_nonbranch;
|
||
info->target = 0;
|
||
info->target2 = 0;
|
||
|
||
op = mips_hash[(word >> OP_SH_OP) & OP_MASK_OP];
|
||
if (op != NULL)
|
||
{
|
||
for (; op < &mips_opcodes[NUMOPCODES]; op++)
|
||
{
|
||
if (op->pinfo != INSN_MACRO
|
||
&& !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
|
||
&& (word & op->mask) == op->match)
|
||
{
|
||
const char *d;
|
||
|
||
/* We always allow to disassemble the jalx instruction. */
|
||
if (! OPCODE_IS_MEMBER (op, mips_isa, mips_processor)
|
||
&& strcmp (op->name, "jalx"))
|
||
continue;
|
||
|
||
/* Figure out instruction type and branch delay information. */
|
||
if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
|
||
{
|
||
if ((info->insn_type & INSN_WRITE_GPR_31) != 0)
|
||
info->insn_type = dis_jsr;
|
||
else
|
||
info->insn_type = dis_branch;
|
||
info->branch_delay_insns = 1;
|
||
}
|
||
else if ((op->pinfo & (INSN_COND_BRANCH_DELAY
|
||
| INSN_COND_BRANCH_LIKELY)) != 0)
|
||
{
|
||
if ((info->insn_type & INSN_WRITE_GPR_31) != 0)
|
||
info->insn_type = dis_condjsr;
|
||
else
|
||
info->insn_type = dis_condbranch;
|
||
info->branch_delay_insns = 1;
|
||
}
|
||
else if ((op->pinfo & (INSN_STORE_MEMORY
|
||
| INSN_LOAD_MEMORY_DELAY)) != 0)
|
||
info->insn_type = dis_dref;
|
||
|
||
(*info->fprintf_func) (info->stream, "%s", op->name);
|
||
|
||
d = op->args;
|
||
if (d != NULL && *d != '\0')
|
||
{
|
||
(*info->fprintf_func) (info->stream, "\t");
|
||
print_insn_args (d, word, memaddr, info);
|
||
}
|
||
|
||
return INSNLEN;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Handle undefined instructions. */
|
||
info->insn_type = dis_noninsn;
|
||
(*info->fprintf_func) (info->stream, "0x%lx", word);
|
||
return INSNLEN;
|
||
}
|
||
|
||
/* Disassemble an operand for a mips16 instruction. */
|
||
|
||
static void
|
||
print_mips16_insn_arg (char type,
|
||
const struct mips_opcode *op,
|
||
int l,
|
||
bfd_boolean use_extend,
|
||
int extend,
|
||
bfd_vma memaddr,
|
||
struct disassemble_info *info)
|
||
{
|
||
switch (type)
|
||
{
|
||
case ',':
|
||
case '(':
|
||
case ')':
|
||
(*info->fprintf_func) (info->stream, "%c", type);
|
||
break;
|
||
|
||
case 'y':
|
||
case 'w':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips16_reg_names[((l >> MIPS16OP_SH_RY)
|
||
& MIPS16OP_MASK_RY)]);
|
||
break;
|
||
|
||
case 'x':
|
||
case 'v':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips16_reg_names[((l >> MIPS16OP_SH_RX)
|
||
& MIPS16OP_MASK_RX)]);
|
||
break;
|
||
|
||
case 'z':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips16_reg_names[((l >> MIPS16OP_SH_RZ)
|
||
& MIPS16OP_MASK_RZ)]);
|
||
break;
|
||
|
||
case 'Z':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips16_reg_names[((l >> MIPS16OP_SH_MOVE32Z)
|
||
& MIPS16OP_MASK_MOVE32Z)]);
|
||
break;
|
||
|
||
case '0':
|
||
(*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
|
||
break;
|
||
|
||
case 'S':
|
||
(*info->fprintf_func) (info->stream, "%s", mips_gpr_names[29]);
|
||
break;
|
||
|
||
case 'P':
|
||
(*info->fprintf_func) (info->stream, "$pc");
|
||
break;
|
||
|
||
case 'R':
|
||
(*info->fprintf_func) (info->stream, "%s", mips_gpr_names[31]);
|
||
break;
|
||
|
||
case 'X':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[((l >> MIPS16OP_SH_REGR32)
|
||
& MIPS16OP_MASK_REGR32)]);
|
||
break;
|
||
|
||
case 'Y':
|
||
(*info->fprintf_func) (info->stream, "%s",
|
||
mips_gpr_names[MIPS16OP_EXTRACT_REG32R (l)]);
|
||
break;
|
||
|
||
case '<':
|
||
case '>':
|
||
case '[':
|
||
case ']':
|
||
case '4':
|
||
case '5':
|
||
case 'H':
|
||
case 'W':
|
||
case 'D':
|
||
case 'j':
|
||
case '6':
|
||
case '8':
|
||
case 'V':
|
||
case 'C':
|
||
case 'U':
|
||
case 'k':
|
||
case 'K':
|
||
case 'p':
|
||
case 'q':
|
||
case 'A':
|
||
case 'B':
|
||
case 'E':
|
||
{
|
||
int immed, nbits, shift, signedp, extbits, pcrel, extu, branch;
|
||
|
||
shift = 0;
|
||
signedp = 0;
|
||
extbits = 16;
|
||
pcrel = 0;
|
||
extu = 0;
|
||
branch = 0;
|
||
switch (type)
|
||
{
|
||
case '<':
|
||
nbits = 3;
|
||
immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
|
||
extbits = 5;
|
||
extu = 1;
|
||
break;
|
||
case '>':
|
||
nbits = 3;
|
||
immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
|
||
extbits = 5;
|
||
extu = 1;
|
||
break;
|
||
case '[':
|
||
nbits = 3;
|
||
immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
|
||
extbits = 6;
|
||
extu = 1;
|
||
break;
|
||
case ']':
|
||
nbits = 3;
|
||
immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
|
||
extbits = 6;
|
||
extu = 1;
|
||
break;
|
||
case '4':
|
||
nbits = 4;
|
||
immed = (l >> MIPS16OP_SH_IMM4) & MIPS16OP_MASK_IMM4;
|
||
signedp = 1;
|
||
extbits = 15;
|
||
break;
|
||
case '5':
|
||
nbits = 5;
|
||
immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 1;
|
||
break;
|
||
case 'H':
|
||
nbits = 5;
|
||
shift = 1;
|
||
immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 2;
|
||
break;
|
||
case 'W':
|
||
nbits = 5;
|
||
shift = 2;
|
||
immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
|
||
if ((op->pinfo & MIPS16_INSN_READ_PC) == 0
|
||
&& (op->pinfo & MIPS16_INSN_READ_SP) == 0)
|
||
{
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 4;
|
||
}
|
||
break;
|
||
case 'D':
|
||
nbits = 5;
|
||
shift = 3;
|
||
immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 8;
|
||
break;
|
||
case 'j':
|
||
nbits = 5;
|
||
immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
|
||
signedp = 1;
|
||
break;
|
||
case '6':
|
||
nbits = 6;
|
||
immed = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
|
||
break;
|
||
case '8':
|
||
nbits = 8;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
break;
|
||
case 'V':
|
||
nbits = 8;
|
||
shift = 2;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
/* FIXME: This might be lw, or it might be addiu to $sp or
|
||
$pc. We assume it's load. */
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 4;
|
||
break;
|
||
case 'C':
|
||
nbits = 8;
|
||
shift = 3;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 8;
|
||
break;
|
||
case 'U':
|
||
nbits = 8;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
extu = 1;
|
||
break;
|
||
case 'k':
|
||
nbits = 8;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
signedp = 1;
|
||
break;
|
||
case 'K':
|
||
nbits = 8;
|
||
shift = 3;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
signedp = 1;
|
||
break;
|
||
case 'p':
|
||
nbits = 8;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
signedp = 1;
|
||
pcrel = 1;
|
||
branch = 1;
|
||
info->insn_type = dis_condbranch;
|
||
break;
|
||
case 'q':
|
||
nbits = 11;
|
||
immed = (l >> MIPS16OP_SH_IMM11) & MIPS16OP_MASK_IMM11;
|
||
signedp = 1;
|
||
pcrel = 1;
|
||
branch = 1;
|
||
info->insn_type = dis_branch;
|
||
break;
|
||
case 'A':
|
||
nbits = 8;
|
||
shift = 2;
|
||
immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
|
||
pcrel = 1;
|
||
/* FIXME: This can be lw or la. We assume it is lw. */
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 4;
|
||
break;
|
||
case 'B':
|
||
nbits = 5;
|
||
shift = 3;
|
||
immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
|
||
pcrel = 1;
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 8;
|
||
break;
|
||
case 'E':
|
||
nbits = 5;
|
||
shift = 2;
|
||
immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
|
||
pcrel = 1;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
|
||
if (! use_extend)
|
||
{
|
||
if (signedp && immed >= (1 << (nbits - 1)))
|
||
immed -= 1 << nbits;
|
||
immed <<= shift;
|
||
if ((type == '<' || type == '>' || type == '[' || type == ']')
|
||
&& immed == 0)
|
||
immed = 8;
|
||
}
|
||
else
|
||
{
|
||
if (extbits == 16)
|
||
immed |= ((extend & 0x1f) << 11) | (extend & 0x7e0);
|
||
else if (extbits == 15)
|
||
immed |= ((extend & 0xf) << 11) | (extend & 0x7f0);
|
||
else
|
||
immed = ((extend >> 6) & 0x1f) | (extend & 0x20);
|
||
immed &= (1 << extbits) - 1;
|
||
if (! extu && immed >= (1 << (extbits - 1)))
|
||
immed -= 1 << extbits;
|
||
}
|
||
|
||
if (! pcrel)
|
||
(*info->fprintf_func) (info->stream, "%d", immed);
|
||
else
|
||
{
|
||
bfd_vma baseaddr;
|
||
|
||
if (branch)
|
||
{
|
||
immed *= 2;
|
||
baseaddr = memaddr + 2;
|
||
}
|
||
else if (use_extend)
|
||
baseaddr = memaddr - 2;
|
||
else
|
||
{
|
||
int status;
|
||
bfd_byte buffer[2];
|
||
|
||
baseaddr = memaddr;
|
||
|
||
/* If this instruction is in the delay slot of a jr
|
||
instruction, the base address is the address of the
|
||
jr instruction. If it is in the delay slot of jalr
|
||
instruction, the base address is the address of the
|
||
jalr instruction. This test is unreliable: we have
|
||
no way of knowing whether the previous word is
|
||
instruction or data. */
|
||
status = (*info->read_memory_func) (memaddr - 4, buffer, 2,
|
||
info);
|
||
if (status == 0
|
||
&& (((info->endian == BFD_ENDIAN_BIG
|
||
? bfd_getb16 (buffer)
|
||
: bfd_getl16 (buffer))
|
||
& 0xf800) == 0x1800))
|
||
baseaddr = memaddr - 4;
|
||
else
|
||
{
|
||
status = (*info->read_memory_func) (memaddr - 2, buffer,
|
||
2, info);
|
||
if (status == 0
|
||
&& (((info->endian == BFD_ENDIAN_BIG
|
||
? bfd_getb16 (buffer)
|
||
: bfd_getl16 (buffer))
|
||
& 0xf81f) == 0xe800))
|
||
baseaddr = memaddr - 2;
|
||
}
|
||
}
|
||
info->target = (baseaddr & ~((1 << shift) - 1)) + immed;
|
||
(*info->print_address_func) (info->target, info);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'a':
|
||
if (! use_extend)
|
||
extend = 0;
|
||
l = ((l & 0x1f) << 23) | ((l & 0x3e0) << 13) | (extend << 2);
|
||
info->target = ((memaddr + 4) & ~(bfd_vma) 0x0fffffff) | l;
|
||
(*info->print_address_func) (info->target, info);
|
||
info->insn_type = dis_jsr;
|
||
info->branch_delay_insns = 1;
|
||
break;
|
||
|
||
case 'l':
|
||
case 'L':
|
||
{
|
||
int need_comma, amask, smask;
|
||
|
||
need_comma = 0;
|
||
|
||
l = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
|
||
|
||
amask = (l >> 3) & 7;
|
||
|
||
if (amask > 0 && amask < 5)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
|
||
if (amask > 1)
|
||
(*info->fprintf_func) (info->stream, "-%s",
|
||
mips_gpr_names[amask + 3]);
|
||
need_comma = 1;
|
||
}
|
||
|
||
smask = (l >> 1) & 3;
|
||
if (smask == 3)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%s??",
|
||
need_comma ? "," : "");
|
||
need_comma = 1;
|
||
}
|
||
else if (smask > 0)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%s%s",
|
||
need_comma ? "," : "",
|
||
mips_gpr_names[16]);
|
||
if (smask > 1)
|
||
(*info->fprintf_func) (info->stream, "-%s",
|
||
mips_gpr_names[smask + 15]);
|
||
need_comma = 1;
|
||
}
|
||
|
||
if (l & 1)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%s%s",
|
||
need_comma ? "," : "",
|
||
mips_gpr_names[31]);
|
||
need_comma = 1;
|
||
}
|
||
|
||
if (amask == 5 || amask == 6)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%s$f0",
|
||
need_comma ? "," : "");
|
||
if (amask == 6)
|
||
(*info->fprintf_func) (info->stream, "-$f1");
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'm':
|
||
case 'M':
|
||
/* MIPS16e save/restore. */
|
||
{
|
||
int need_comma = 0;
|
||
int amask, args, statics;
|
||
int nsreg, smask;
|
||
int framesz;
|
||
int i, j;
|
||
|
||
l = l & 0x7f;
|
||
if (use_extend)
|
||
l |= extend << 16;
|
||
|
||
amask = (l >> 16) & 0xf;
|
||
if (amask == MIPS16_ALL_ARGS)
|
||
{
|
||
args = 4;
|
||
statics = 0;
|
||
}
|
||
else if (amask == MIPS16_ALL_STATICS)
|
||
{
|
||
args = 0;
|
||
statics = 4;
|
||
}
|
||
else
|
||
{
|
||
args = amask >> 2;
|
||
statics = amask & 3;
|
||
}
|
||
|
||
if (args > 0) {
|
||
(*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
|
||
if (args > 1)
|
||
(*info->fprintf_func) (info->stream, "-%s",
|
||
mips_gpr_names[4 + args - 1]);
|
||
need_comma = 1;
|
||
}
|
||
|
||
framesz = (((l >> 16) & 0xf0) | (l & 0x0f)) * 8;
|
||
if (framesz == 0 && !use_extend)
|
||
framesz = 128;
|
||
|
||
(*info->fprintf_func) (info->stream, "%s%d",
|
||
need_comma ? "," : "",
|
||
framesz);
|
||
|
||
if (l & 0x40) /* $ra */
|
||
(*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[31]);
|
||
|
||
nsreg = (l >> 24) & 0x7;
|
||
smask = 0;
|
||
if (l & 0x20) /* $s0 */
|
||
smask |= 1 << 0;
|
||
if (l & 0x10) /* $s1 */
|
||
smask |= 1 << 1;
|
||
if (nsreg > 0) /* $s2-$s8 */
|
||
smask |= ((1 << nsreg) - 1) << 2;
|
||
|
||
/* Find first set static reg bit. */
|
||
for (i = 0; i < 9; i++)
|
||
{
|
||
if (smask & (1 << i))
|
||
{
|
||
(*info->fprintf_func) (info->stream, ",%s",
|
||
mips_gpr_names[i == 8 ? 30 : (16 + i)]);
|
||
/* Skip over string of set bits. */
|
||
for (j = i; smask & (2 << j); j++)
|
||
continue;
|
||
if (j > i)
|
||
(*info->fprintf_func) (info->stream, "-%s",
|
||
mips_gpr_names[j == 8 ? 30 : (16 + j)]);
|
||
i = j + 1;
|
||
}
|
||
}
|
||
|
||
/* Statics $ax - $a3. */
|
||
if (statics == 1)
|
||
(*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[7]);
|
||
else if (statics > 0)
|
||
(*info->fprintf_func) (info->stream, ",%s-%s",
|
||
mips_gpr_names[7 - statics + 1],
|
||
mips_gpr_names[7]);
|
||
}
|
||
break;
|
||
|
||
default:
|
||
/* xgettext:c-format */
|
||
(*info->fprintf_func)
|
||
(info->stream,
|
||
_("# internal disassembler error, unrecognised modifier (%c)"),
|
||
type);
|
||
abort ();
|
||
}
|
||
}
|
||
|
||
/* Disassemble mips16 instructions. */
|
||
|
||
static int
|
||
print_insn_mips16 (bfd_vma memaddr, struct disassemble_info *info)
|
||
{
|
||
int status;
|
||
bfd_byte buffer[2];
|
||
int length;
|
||
int insn;
|
||
bfd_boolean use_extend;
|
||
int extend = 0;
|
||
const struct mips_opcode *op, *opend;
|
||
|
||
info->bytes_per_chunk = 2;
|
||
info->display_endian = info->endian;
|
||
info->insn_info_valid = 1;
|
||
info->branch_delay_insns = 0;
|
||
info->data_size = 0;
|
||
info->insn_type = dis_nonbranch;
|
||
info->target = 0;
|
||
info->target2 = 0;
|
||
|
||
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
|
||
if (status != 0)
|
||
{
|
||
(*info->memory_error_func) (status, memaddr, info);
|
||
return -1;
|
||
}
|
||
|
||
length = 2;
|
||
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
insn = bfd_getb16 (buffer);
|
||
else
|
||
insn = bfd_getl16 (buffer);
|
||
|
||
/* Handle the extend opcode specially. */
|
||
use_extend = FALSE;
|
||
if ((insn & 0xf800) == 0xf000)
|
||
{
|
||
use_extend = TRUE;
|
||
extend = insn & 0x7ff;
|
||
|
||
memaddr += 2;
|
||
|
||
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
|
||
if (status != 0)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "extend 0x%x",
|
||
(unsigned int) extend);
|
||
(*info->memory_error_func) (status, memaddr, info);
|
||
return -1;
|
||
}
|
||
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
insn = bfd_getb16 (buffer);
|
||
else
|
||
insn = bfd_getl16 (buffer);
|
||
|
||
/* Check for an extend opcode followed by an extend opcode. */
|
||
if ((insn & 0xf800) == 0xf000)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "extend 0x%x",
|
||
(unsigned int) extend);
|
||
info->insn_type = dis_noninsn;
|
||
return length;
|
||
}
|
||
|
||
length += 2;
|
||
}
|
||
|
||
/* FIXME: Should probably use a hash table on the major opcode here. */
|
||
|
||
opend = mips16_opcodes + bfd_mips16_num_opcodes;
|
||
for (op = mips16_opcodes; op < opend; op++)
|
||
{
|
||
if (op->pinfo != INSN_MACRO
|
||
&& !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
|
||
&& (insn & op->mask) == op->match)
|
||
{
|
||
const char *s;
|
||
|
||
if (strchr (op->args, 'a') != NULL)
|
||
{
|
||
if (use_extend)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "extend 0x%x",
|
||
(unsigned int) extend);
|
||
info->insn_type = dis_noninsn;
|
||
return length - 2;
|
||
}
|
||
|
||
use_extend = FALSE;
|
||
|
||
memaddr += 2;
|
||
|
||
status = (*info->read_memory_func) (memaddr, buffer, 2,
|
||
info);
|
||
if (status == 0)
|
||
{
|
||
use_extend = TRUE;
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
extend = bfd_getb16 (buffer);
|
||
else
|
||
extend = bfd_getl16 (buffer);
|
||
length += 2;
|
||
}
|
||
}
|
||
|
||
(*info->fprintf_func) (info->stream, "%s", op->name);
|
||
if (op->args[0] != '\0')
|
||
(*info->fprintf_func) (info->stream, "\t");
|
||
|
||
for (s = op->args; *s != '\0'; s++)
|
||
{
|
||
if (*s == ','
|
||
&& s[1] == 'w'
|
||
&& (((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)
|
||
== ((insn >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY)))
|
||
{
|
||
/* Skip the register and the comma. */
|
||
++s;
|
||
continue;
|
||
}
|
||
if (*s == ','
|
||
&& s[1] == 'v'
|
||
&& (((insn >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ)
|
||
== ((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)))
|
||
{
|
||
/* Skip the register and the comma. */
|
||
++s;
|
||
continue;
|
||
}
|
||
print_mips16_insn_arg (*s, op, insn, use_extend, extend, memaddr,
|
||
info);
|
||
}
|
||
|
||
if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
|
||
{
|
||
info->branch_delay_insns = 1;
|
||
if (info->insn_type != dis_jsr)
|
||
info->insn_type = dis_branch;
|
||
}
|
||
|
||
return length;
|
||
}
|
||
}
|
||
|
||
if (use_extend)
|
||
(*info->fprintf_func) (info->stream, "0x%x", extend | 0xf000);
|
||
(*info->fprintf_func) (info->stream, "0x%x", insn);
|
||
info->insn_type = dis_noninsn;
|
||
|
||
return length;
|
||
}
|
||
|
||
/* In an environment where we do not know the symbol type of the
|
||
instruction we are forced to assume that the low order bit of the
|
||
instructions' address may mark it as a mips16 instruction. If we
|
||
are single stepping, or the pc is within the disassembled function,
|
||
this works. Otherwise, we need a clue. Sometimes. */
|
||
|
||
static int
|
||
_print_insn_mips (bfd_vma memaddr,
|
||
struct disassemble_info *info,
|
||
enum bfd_endian endianness)
|
||
{
|
||
bfd_byte buffer[INSNLEN];
|
||
int status;
|
||
|
||
set_default_mips_dis_options (info);
|
||
parse_mips_dis_options (info->disassembler_options);
|
||
|
||
#if 1
|
||
/* FIXME: If odd address, this is CLEARLY a mips 16 instruction. */
|
||
/* Only a few tools will work this way. */
|
||
if (memaddr & 0x01)
|
||
return print_insn_mips16 (memaddr, info);
|
||
#endif
|
||
|
||
#if SYMTAB_AVAILABLE
|
||
if (info->mach == bfd_mach_mips16
|
||
|| (info->flavour == bfd_target_elf_flavour
|
||
&& info->symbols != NULL
|
||
&& ((*(elf_symbol_type **) info->symbols)->internal_elf_sym.st_other
|
||
== STO_MIPS16)))
|
||
return print_insn_mips16 (memaddr, info);
|
||
#endif
|
||
|
||
status = (*info->read_memory_func) (memaddr, buffer, INSNLEN, info);
|
||
if (status == 0)
|
||
{
|
||
unsigned long insn;
|
||
|
||
if (endianness == BFD_ENDIAN_BIG)
|
||
insn = (unsigned long) bfd_getb32 (buffer);
|
||
else
|
||
insn = (unsigned long) bfd_getl32 (buffer);
|
||
|
||
return print_insn_mips (memaddr, insn, info);
|
||
}
|
||
else
|
||
{
|
||
(*info->memory_error_func) (status, memaddr, info);
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
int
|
||
print_insn_big_mips (bfd_vma memaddr, struct disassemble_info *info)
|
||
{
|
||
return _print_insn_mips (memaddr, info, BFD_ENDIAN_BIG);
|
||
}
|
||
|
||
int
|
||
print_insn_little_mips (bfd_vma memaddr, struct disassemble_info *info)
|
||
{
|
||
return _print_insn_mips (memaddr, info, BFD_ENDIAN_LITTLE);
|
||
}
|
||
|
||
void
|
||
print_mips_disassembler_options (FILE *stream)
|
||
{
|
||
unsigned int i;
|
||
|
||
fprintf (stream, _("\n\
|
||
The following MIPS specific disassembler options are supported for use\n\
|
||
with the -M switch (multiple options should be separated by commas):\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
gpr-names=ABI Print GPR names according to specified ABI.\n\
|
||
Default: based on binary being disassembled.\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
fpr-names=ABI Print FPR names according to specified ABI.\n\
|
||
Default: numeric.\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
cp0-names=ARCH Print CP0 register names according to\n\
|
||
specified architecture.\n\
|
||
Default: based on binary being disassembled.\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
hwr-names=ARCH Print HWR names according to specified \n\
|
||
architecture.\n\
|
||
Default: based on binary being disassembled.\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
reg-names=ABI Print GPR and FPR names according to\n\
|
||
specified ABI.\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
reg-names=ARCH Print CP0 register and HWR names according to\n\
|
||
specified architecture.\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
For the options above, the following values are supported for \"ABI\":\n\
|
||
"));
|
||
for (i = 0; i < ARRAY_SIZE (mips_abi_choices); i++)
|
||
fprintf (stream, " %s", mips_abi_choices[i].name);
|
||
fprintf (stream, _("\n"));
|
||
|
||
fprintf (stream, _("\n\
|
||
For the options above, The following values are supported for \"ARCH\":\n\
|
||
"));
|
||
for (i = 0; i < ARRAY_SIZE (mips_arch_choices); i++)
|
||
if (*mips_arch_choices[i].name != '\0')
|
||
fprintf (stream, " %s", mips_arch_choices[i].name);
|
||
fprintf (stream, _("\n"));
|
||
|
||
fprintf (stream, _("\n"));
|
||
}
|