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2082 lines
60 KiB
C
2082 lines
60 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, 2006, 2007, 2008, 2009, 2012
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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 the GNU opcodes library.
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This library 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 3, or (at your option)
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any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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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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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_r3000[32] =
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{
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"c0_index", "c0_random", "c0_entrylo", "$3",
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"c0_context", "$5", "$6", "$7",
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"c0_badvaddr", "$9", "c0_entryhi", "$11",
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"c0_sr", "c0_cause", "c0_epc", "c0_prid",
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"$16", "$17", "$18", "$19",
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"$20", "$21", "$22", "$23",
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"$24", "$25", "$26", "$27",
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"$28", "$29", "$30", "$31",
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};
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static const char * const mips_cp0_names_r4000[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_sr", "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", "$23",
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"$24", "$25", "c0_ecc", "c0_cacheerr",
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"c0_taglo", "c0_taghi", "c0_errorepc", "$31",
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};
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static const char * const mips_cp0_names_r5900[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_sr", "c0_cause", "c0_epc", "c0_prid",
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"c0_config", "$17", "$18", "$19",
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"$20", "$21", "$22", "c0_badpaddr",
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"c0_depc", "c0_perfcnt", "$26", "$27",
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"c0_taglo", "c0_taghi", "c0_errorepc", "$31"
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};
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static const struct mips_cp0sel_name mips_cp0sel_names_mipsr5900[] =
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{
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{ 24, 2, "c0_iab" },
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{ 24, 3, "c0_iabm" },
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{ 24, 4, "c0_dab" },
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{ 24, 5, "c0_dabm" },
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{ 24, 6, "c0_dvb" },
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{ 24, 7, "c0_dvbm" },
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{ 25, 1, "c0_perfcnt,1" },
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{ 25, 2, "c0_perfcnt,2" }
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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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{ 0, 1, "c0_mvpcontrol" },
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{ 0, 2, "c0_mvpconf0" },
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{ 0, 3, "c0_mvpconf1" },
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{ 1, 1, "c0_vpecontrol" },
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{ 1, 2, "c0_vpeconf0" },
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{ 1, 3, "c0_vpeconf1" },
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{ 1, 4, "c0_yqmask" },
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{ 1, 5, "c0_vpeschedule" },
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{ 1, 6, "c0_vpeschefback" },
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{ 2, 1, "c0_tcstatus" },
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{ 2, 2, "c0_tcbind" },
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{ 2, 3, "c0_tcrestart" },
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{ 2, 4, "c0_tchalt" },
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{ 2, 5, "c0_tccontext" },
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{ 2, 6, "c0_tcschedule" },
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{ 2, 7, "c0_tcschefback" },
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{ 5, 1, "c0_pagegrain" },
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{ 6, 1, "c0_srsconf0" },
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{ 6, 2, "c0_srsconf1" },
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{ 6, 3, "c0_srsconf2" },
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{ 6, 4, "c0_srsconf3" },
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{ 6, 5, "c0_srsconf4" },
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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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/* Xlr cop0 register names. */
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static const char * const mips_cp0_names_xlr[32] = {
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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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/* XLR's CP0 Select Registers. */
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static const struct mips_cp0sel_name mips_cp0sel_names_xlr[] = {
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||
{ 9, 6, "c0_extintreq" },
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||
{ 9, 7, "c0_extintmask" },
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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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||
{ 16, 7, "c0_procid2" },
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||
{ 18, 1, "c0_watchlo,1" },
|
||
{ 18, 2, "c0_watchlo,2" },
|
||
{ 18, 3, "c0_watchlo,3" },
|
||
{ 18, 4, "c0_watchlo,4" },
|
||
{ 18, 5, "c0_watchlo,5" },
|
||
{ 18, 6, "c0_watchlo,6" },
|
||
{ 18, 7, "c0_watchlo,7" },
|
||
{ 19, 1, "c0_watchhi,1" },
|
||
{ 19, 2, "c0_watchhi,2" },
|
||
{ 19, 3, "c0_watchhi,3" },
|
||
{ 19, 4, "c0_watchhi,4" },
|
||
{ 19, 5, "c0_watchhi,5" },
|
||
{ 19, 6, "c0_watchhi,6" },
|
||
{ 19, 7, "c0_watchhi,7" },
|
||
{ 25, 1, "c0_perfcnt,1" },
|
||
{ 25, 2, "c0_perfcnt,2" },
|
||
{ 25, 3, "c0_perfcnt,3" },
|
||
{ 25, 4, "c0_perfcnt,4" },
|
||
{ 25, 5, "c0_perfcnt,5" },
|
||
{ 25, 6, "c0_perfcnt,6" },
|
||
{ 25, 7, "c0_perfcnt,7" },
|
||
{ 27, 1, "c0_cacheerr,1" },
|
||
{ 27, 2, "c0_cacheerr,2" },
|
||
{ 27, 3, "c0_cacheerr,3" },
|
||
{ 28, 1, "c0_datalo" },
|
||
{ 29, 1, "c0_datahi" }
|
||
};
|
||
|
||
static const char * const mips_hwr_names_numeric[32] =
|
||
{
|
||
"$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
|
||
"$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
|
||
"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
|
||
"$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
|
||
};
|
||
|
||
static const char * const mips_hwr_names_mips3264r2[32] =
|
||
{
|
||
"hwr_cpunum", "hwr_synci_step", "hwr_cc", "hwr_ccres",
|
||
"$4", "$5", "$6", "$7",
|
||
"$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
|
||
"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
|
||
"$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
|
||
};
|
||
|
||
struct mips_abi_choice
|
||
{
|
||
const char * name;
|
||
const char * const *gpr_names;
|
||
const char * const *fpr_names;
|
||
};
|
||
|
||
struct mips_abi_choice mips_abi_choices[] =
|
||
{
|
||
{ "numeric", mips_gpr_names_numeric, mips_fpr_names_numeric },
|
||
{ "32", mips_gpr_names_oldabi, mips_fpr_names_32 },
|
||
{ "n32", mips_gpr_names_newabi, mips_fpr_names_n32 },
|
||
{ "64", mips_gpr_names_newabi, mips_fpr_names_64 },
|
||
};
|
||
|
||
struct mips_arch_choice
|
||
{
|
||
const char *name;
|
||
int bfd_mach_valid;
|
||
unsigned long bfd_mach;
|
||
int processor;
|
||
int isa;
|
||
int ase;
|
||
const char * const *cp0_names;
|
||
const struct mips_cp0sel_name *cp0sel_names;
|
||
unsigned int cp0sel_names_len;
|
||
const char * const *hwr_names;
|
||
};
|
||
|
||
const struct mips_arch_choice mips_arch_choices[] =
|
||
{
|
||
{ "numeric", 0, 0, 0, 0, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
|
||
{ "r3000", 1, bfd_mach_mips3000, CPU_R3000, ISA_MIPS1, 0,
|
||
mips_cp0_names_r3000, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r3900", 1, bfd_mach_mips3900, CPU_R3900, ISA_MIPS1, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r4000", 1, bfd_mach_mips4000, CPU_R4000, ISA_MIPS3, 0,
|
||
mips_cp0_names_r4000, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r4010", 1, bfd_mach_mips4010, CPU_R4010, ISA_MIPS2, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr4100", 1, bfd_mach_mips4100, CPU_VR4100, ISA_MIPS3, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr4111", 1, bfd_mach_mips4111, CPU_R4111, ISA_MIPS3, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr4120", 1, bfd_mach_mips4120, CPU_VR4120, ISA_MIPS3, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r4300", 1, bfd_mach_mips4300, CPU_R4300, ISA_MIPS3, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r4400", 1, bfd_mach_mips4400, CPU_R4400, ISA_MIPS3, 0,
|
||
mips_cp0_names_r4000, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r4600", 1, bfd_mach_mips4600, CPU_R4600, ISA_MIPS3, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r4650", 1, bfd_mach_mips4650, CPU_R4650, ISA_MIPS3, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r5000", 1, bfd_mach_mips5000, CPU_R5000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr5400", 1, bfd_mach_mips5400, CPU_VR5400, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "vr5500", 1, bfd_mach_mips5500, CPU_VR5500, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r5900", 1, bfd_mach_mips5900, CPU_R5900, ISA_MIPS3, 0,
|
||
mips_cp0_names_r5900, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r6000", 1, bfd_mach_mips6000, CPU_R6000, ISA_MIPS2, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "rm7000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "rm9000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r8000", 1, bfd_mach_mips8000, CPU_R8000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r10000", 1, bfd_mach_mips10000, CPU_R10000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r12000", 1, bfd_mach_mips12000, CPU_R12000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r14000", 1, bfd_mach_mips14000, CPU_R14000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "r16000", 1, bfd_mach_mips16000, CPU_R16000, ISA_MIPS4, 0,
|
||
mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
|
||
{ "mips5", 1, bfd_mach_mips5, CPU_MIPS5, ISA_MIPS5, 0,
|
||
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, ASE_SMARTMIPS,
|
||
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,
|
||
(ASE_SMARTMIPS | ASE_DSP | ASE_DSPR2 | ASE_EVA | ASE_MIPS3D
|
||
| ASE_MT | ASE_MCU | ASE_VIRT),
|
||
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, ASE_MIPS3D | ASE_MDMX,
|
||
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,
|
||
(ASE_MIPS3D | ASE_DSP | ASE_DSPR2 | ASE_DSP64 | ASE_EVA | ASE_MT
|
||
| ASE_MDMX | ASE_MCU | ASE_VIRT | ASE_VIRT64),
|
||
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_SB1, ASE_MIPS3D,
|
||
mips_cp0_names_sb1,
|
||
mips_cp0sel_names_sb1, ARRAY_SIZE (mips_cp0sel_names_sb1),
|
||
mips_hwr_names_numeric },
|
||
|
||
{ "loongson2e", 1, bfd_mach_mips_loongson_2e, CPU_LOONGSON_2E,
|
||
ISA_MIPS3 | INSN_LOONGSON_2E, 0, mips_cp0_names_numeric,
|
||
NULL, 0, mips_hwr_names_numeric },
|
||
|
||
{ "loongson2f", 1, bfd_mach_mips_loongson_2f, CPU_LOONGSON_2F,
|
||
ISA_MIPS3 | INSN_LOONGSON_2F, 0, mips_cp0_names_numeric,
|
||
NULL, 0, mips_hwr_names_numeric },
|
||
|
||
{ "loongson3a", 1, bfd_mach_mips_loongson_3a, CPU_LOONGSON_3A,
|
||
ISA_MIPS64 | INSN_LOONGSON_3A, 0, mips_cp0_names_numeric,
|
||
NULL, 0, mips_hwr_names_numeric },
|
||
|
||
{ "octeon", 1, bfd_mach_mips_octeon, CPU_OCTEON,
|
||
ISA_MIPS64R2 | INSN_OCTEON, 0, mips_cp0_names_numeric, NULL, 0,
|
||
mips_hwr_names_numeric },
|
||
|
||
{ "octeon+", 1, bfd_mach_mips_octeonp, CPU_OCTEONP,
|
||
ISA_MIPS64R2 | INSN_OCTEONP, 0, mips_cp0_names_numeric,
|
||
NULL, 0, mips_hwr_names_numeric },
|
||
|
||
{ "octeon2", 1, bfd_mach_mips_octeon2, CPU_OCTEON2,
|
||
ISA_MIPS64R2 | INSN_OCTEON2, 0, mips_cp0_names_numeric,
|
||
NULL, 0, mips_hwr_names_numeric },
|
||
|
||
{ "xlr", 1, bfd_mach_mips_xlr, CPU_XLR,
|
||
ISA_MIPS64 | INSN_XLR, 0,
|
||
mips_cp0_names_xlr,
|
||
mips_cp0sel_names_xlr, ARRAY_SIZE (mips_cp0sel_names_xlr),
|
||
mips_hwr_names_numeric },
|
||
|
||
/* XLP is mostly like XLR, with the prominent exception it is being
|
||
MIPS64R2. */
|
||
{ "xlp", 1, bfd_mach_mips_xlr, CPU_XLR,
|
||
ISA_MIPS64R2 | INSN_XLR, 0,
|
||
mips_cp0_names_xlr,
|
||
mips_cp0sel_names_xlr, ARRAY_SIZE (mips_cp0sel_names_xlr),
|
||
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, 0,
|
||
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 int mips_ase;
|
||
static int micromips_ase;
|
||
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;
|
||
}
|
||
|
||
/* Check if the object has microMIPS ASE code. */
|
||
|
||
static int
|
||
is_micromips (Elf_Internal_Ehdr *header)
|
||
{
|
||
if ((header->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) != 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 (?!), no microMIPS ASE (any compressed code
|
||
is MIPS16 ASE) (o)32-style ("oldabi") GPR names, and numeric FPR,
|
||
CP0 register, and HWR names. */
|
||
mips_isa = ISA_MIPS3;
|
||
mips_processor = CPU_R3000;
|
||
micromips_ase = 0;
|
||
mips_ase = 0;
|
||
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;
|
||
|
||
/* Update settings according to the ELF file header flags. */
|
||
if (info->flavour == bfd_target_elf_flavour && info->section != NULL)
|
||
{
|
||
Elf_Internal_Ehdr *header;
|
||
|
||
header = elf_elfheader (info->section->owner);
|
||
/* If an ELF "newabi" binary, use the n32/(n)64 GPR names. */
|
||
if (is_newabi (header))
|
||
mips_gpr_names = mips_gpr_names_newabi;
|
||
/* If a microMIPS binary, then don't use MIPS16 bindings. */
|
||
micromips_ase = is_micromips (header);
|
||
}
|
||
|
||
/* 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;
|
||
mips_ase = mips_target_info.ase;
|
||
#else
|
||
chosen_arch = choose_arch_by_number (info->mach);
|
||
if (chosen_arch != NULL)
|
||
{
|
||
mips_processor = chosen_arch->processor;
|
||
mips_isa = chosen_arch->isa;
|
||
mips_ase = chosen_arch->ase;
|
||
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 (CONST_STRNEQ (option, "no-aliases"))
|
||
{
|
||
no_aliases = 1;
|
||
return;
|
||
}
|
||
|
||
if (CONST_STRNEQ (option, "virt"))
|
||
{
|
||
mips_ase |= ASE_VIRT;
|
||
if (mips_isa & ISA_MIPS64R2)
|
||
mips_ase |= ASE_VIRT64;
|
||
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 register REGNO, of type TYPE, for instruction OPCODE. */
|
||
|
||
static void
|
||
print_reg (struct disassemble_info *info, const struct mips_opcode *opcode,
|
||
enum mips_reg_operand_type type, int regno)
|
||
{
|
||
switch (type)
|
||
{
|
||
case OP_REG_GP:
|
||
info->fprintf_func (info->stream, "%s", mips_gpr_names[regno]);
|
||
break;
|
||
|
||
case OP_REG_FP:
|
||
info->fprintf_func (info->stream, "%s", mips_fpr_names[regno]);
|
||
break;
|
||
|
||
case OP_REG_CCC:
|
||
if (opcode->pinfo & (FP_D | FP_S))
|
||
info->fprintf_func (info->stream, "$fcc%d", regno);
|
||
else
|
||
info->fprintf_func (info->stream, "$cc%d", regno);
|
||
break;
|
||
|
||
case OP_REG_VEC:
|
||
if (opcode->membership & INSN_5400)
|
||
info->fprintf_func (info->stream, "$f%d", regno);
|
||
else
|
||
info->fprintf_func (info->stream, "$v%d", regno);
|
||
break;
|
||
|
||
case OP_REG_ACC:
|
||
info->fprintf_func (info->stream, "$ac%d", regno);
|
||
break;
|
||
|
||
case OP_REG_COPRO:
|
||
if (opcode->name[strlen (opcode->name) - 1] == '0')
|
||
info->fprintf_func (info->stream, "%s", mips_cp0_names[regno]);
|
||
else
|
||
info->fprintf_func (info->stream, "$%d", regno);
|
||
break;
|
||
|
||
case OP_REG_HW:
|
||
info->fprintf_func (info->stream, "%s", mips_hwr_names[regno]);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Used to track the state carried over from previous operands in
|
||
an instruction. */
|
||
struct mips_print_arg_state {
|
||
/* The value of the last OP_INT seen. We only use this for OP_MSB,
|
||
where the value is known to be unsigned and small. */
|
||
unsigned int last_int;
|
||
|
||
/* The type and number of the last OP_REG seen. We only use this for
|
||
OP_REPEAT_DEST_REG and OP_REPEAT_PREV_REG. */
|
||
enum mips_reg_operand_type last_reg_type;
|
||
unsigned int last_regno;
|
||
};
|
||
|
||
/* Initialize STATE for the start of an instruction. */
|
||
|
||
static inline void
|
||
init_print_arg_state (struct mips_print_arg_state *state)
|
||
{
|
||
memset (state, 0, sizeof (*state));
|
||
}
|
||
|
||
/* Print operand OPERAND of OPCODE, using STATE to track inter-operand state.
|
||
UVAL is the encoding of the operand (shifted into bit 0) and BASE_PC is
|
||
the base address for OP_PCREL operands. */
|
||
|
||
static void
|
||
print_insn_arg (struct disassemble_info *info,
|
||
struct mips_print_arg_state *state,
|
||
const struct mips_opcode *opcode,
|
||
const struct mips_operand *operand,
|
||
bfd_vma base_pc,
|
||
unsigned int uval)
|
||
{
|
||
const fprintf_ftype infprintf = info->fprintf_func;
|
||
void *is = info->stream;
|
||
|
||
switch (operand->type)
|
||
{
|
||
case OP_INT:
|
||
{
|
||
const struct mips_int_operand *int_op;
|
||
|
||
int_op = (const struct mips_int_operand *) operand;
|
||
uval = mips_decode_int_operand (int_op, uval);
|
||
state->last_int = uval;
|
||
if (int_op->print_hex)
|
||
infprintf (is, "0x%x", uval);
|
||
else
|
||
infprintf (is, "%d", uval);
|
||
}
|
||
break;
|
||
|
||
case OP_MAPPED_INT:
|
||
{
|
||
const struct mips_mapped_int_operand *mint_op;
|
||
|
||
mint_op = (const struct mips_mapped_int_operand *) operand;
|
||
uval = mint_op->int_map[uval];
|
||
state->last_int = uval;
|
||
if (mint_op->print_hex)
|
||
infprintf (is, "0x%x", uval);
|
||
else
|
||
infprintf (is, "%d", uval);
|
||
}
|
||
break;
|
||
|
||
case OP_MSB:
|
||
{
|
||
const struct mips_msb_operand *msb_op;
|
||
|
||
msb_op = (const struct mips_msb_operand *) operand;
|
||
uval += msb_op->bias;
|
||
if (msb_op->add_lsb)
|
||
uval -= state->last_int;
|
||
infprintf (is, "0x%x", uval);
|
||
}
|
||
break;
|
||
|
||
case OP_REG:
|
||
{
|
||
const struct mips_reg_operand *reg_op;
|
||
|
||
reg_op = (const struct mips_reg_operand *) operand;
|
||
if (reg_op->reg_map)
|
||
uval = reg_op->reg_map[uval];
|
||
print_reg (info, opcode, reg_op->reg_type, uval);
|
||
|
||
state->last_reg_type = reg_op->reg_type;
|
||
state->last_regno = uval;
|
||
}
|
||
break;
|
||
|
||
case OP_REG_PAIR:
|
||
{
|
||
const struct mips_reg_pair_operand *pair_op;
|
||
|
||
pair_op = (const struct mips_reg_pair_operand *) operand;
|
||
print_reg (info, opcode, pair_op->reg_type,
|
||
pair_op->reg1_map[uval]);
|
||
infprintf (is, ",");
|
||
print_reg (info, opcode, pair_op->reg_type,
|
||
pair_op->reg2_map[uval]);
|
||
}
|
||
break;
|
||
|
||
case OP_PCREL:
|
||
{
|
||
const struct mips_pcrel_operand *pcrel_op;
|
||
|
||
pcrel_op = (const struct mips_pcrel_operand *) operand;
|
||
info->target = mips_decode_pcrel_operand (pcrel_op, base_pc, uval);
|
||
|
||
/* Preserve the ISA bit for the GDB disassembler,
|
||
otherwise clear it. */
|
||
if (info->flavour != bfd_target_unknown_flavour)
|
||
info->target &= -2;
|
||
|
||
(*info->print_address_func) (info->target, info);
|
||
}
|
||
break;
|
||
|
||
case OP_PERF_REG:
|
||
infprintf (is, "%d", uval);
|
||
break;
|
||
|
||
case OP_ADDIUSP_INT:
|
||
{
|
||
int sval;
|
||
|
||
sval = mips_signed_operand (operand, uval) * 4;
|
||
if (sval >= -8 && sval < 8)
|
||
sval ^= 0x400;
|
||
infprintf (is, "%d", sval);
|
||
break;
|
||
}
|
||
|
||
case OP_CLO_CLZ_DEST:
|
||
{
|
||
unsigned int reg1, reg2;
|
||
|
||
reg1 = uval & 31;
|
||
reg2 = uval >> 5;
|
||
/* If one is zero use the other. */
|
||
if (reg1 == reg2 || reg2 == 0)
|
||
infprintf (is, "%s", mips_gpr_names[reg1]);
|
||
else if (reg1 == 0)
|
||
infprintf (is, "%s", mips_gpr_names[reg2]);
|
||
else
|
||
/* Bogus, result depends on processor. */
|
||
infprintf (is, "%s or %s", mips_gpr_names[reg1],
|
||
mips_gpr_names[reg2]);
|
||
}
|
||
break;
|
||
|
||
case OP_LWM_SWM_LIST:
|
||
if (operand->size == 2)
|
||
{
|
||
if (uval == 0)
|
||
infprintf (is, "%s,%s",
|
||
mips_gpr_names[16],
|
||
mips_gpr_names[31]);
|
||
else
|
||
infprintf (is, "%s-%s,%s",
|
||
mips_gpr_names[16],
|
||
mips_gpr_names[16 + uval],
|
||
mips_gpr_names[31]);
|
||
}
|
||
else
|
||
{
|
||
int s_reg_encode;
|
||
|
||
s_reg_encode = uval & 0xf;
|
||
if (s_reg_encode != 0)
|
||
{
|
||
if (s_reg_encode == 1)
|
||
infprintf (is, "%s", mips_gpr_names[16]);
|
||
else if (s_reg_encode < 9)
|
||
infprintf (is, "%s-%s",
|
||
mips_gpr_names[16],
|
||
mips_gpr_names[15 + s_reg_encode]);
|
||
else if (s_reg_encode == 9)
|
||
infprintf (is, "%s-%s,%s",
|
||
mips_gpr_names[16],
|
||
mips_gpr_names[23],
|
||
mips_gpr_names[30]);
|
||
else
|
||
infprintf (is, "UNKNOWN");
|
||
}
|
||
|
||
if (uval & 0x10) /* For ra. */
|
||
{
|
||
if (s_reg_encode == 0)
|
||
infprintf (is, "%s", mips_gpr_names[31]);
|
||
else
|
||
infprintf (is, ",%s", mips_gpr_names[31]);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case OP_ENTRY_EXIT_LIST:
|
||
{
|
||
const char *sep;
|
||
unsigned int amask, smask;
|
||
|
||
sep = "";
|
||
amask = (uval >> 3) & 7;
|
||
if (amask > 0 && amask < 5)
|
||
{
|
||
infprintf (is, "%s", mips_gpr_names[4]);
|
||
if (amask > 1)
|
||
infprintf (is, "-%s", mips_gpr_names[amask + 3]);
|
||
sep = ",";
|
||
}
|
||
|
||
smask = (uval >> 1) & 3;
|
||
if (smask == 3)
|
||
{
|
||
infprintf (is, "%s??", sep);
|
||
sep = ",";
|
||
}
|
||
else if (smask > 0)
|
||
{
|
||
infprintf (is, "%s%s", sep, mips_gpr_names[16]);
|
||
if (smask > 1)
|
||
infprintf (is, "-%s", mips_gpr_names[smask + 15]);
|
||
sep = ",";
|
||
}
|
||
|
||
if (uval & 1)
|
||
{
|
||
infprintf (is, "%s%s", sep, mips_gpr_names[31]);
|
||
sep = ",";
|
||
}
|
||
|
||
if (amask == 5 || amask == 6)
|
||
{
|
||
infprintf (is, "%s%s", sep, mips_fpr_names[0]);
|
||
if (amask == 6)
|
||
infprintf (is, "-%s", mips_fpr_names[1]);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case OP_SAVE_RESTORE_LIST:
|
||
/* Should be handled by the caller due to extend behavior. */
|
||
abort ();
|
||
|
||
case OP_MDMX_IMM_REG:
|
||
{
|
||
unsigned int vsel;
|
||
|
||
vsel = uval >> 5;
|
||
uval &= 31;
|
||
if ((vsel & 0x10) == 0)
|
||
{
|
||
int fmt;
|
||
|
||
vsel &= 0x0f;
|
||
for (fmt = 0; fmt < 3; fmt++, vsel >>= 1)
|
||
if ((vsel & 1) == 0)
|
||
break;
|
||
print_reg (info, opcode, OP_REG_VEC, uval);
|
||
infprintf (is, "[%d]", vsel >> 1);
|
||
}
|
||
else if ((vsel & 0x08) == 0)
|
||
print_reg (info, opcode, OP_REG_VEC, uval);
|
||
else
|
||
infprintf (is, "0x%x", uval);
|
||
}
|
||
break;
|
||
|
||
case OP_REPEAT_PREV_REG:
|
||
print_reg (info, opcode, state->last_reg_type, state->last_regno);
|
||
break;
|
||
|
||
case OP_REPEAT_DEST_REG:
|
||
/* Should always match OP_REPEAT_PREV_REG first. */
|
||
abort ();
|
||
|
||
case OP_PC:
|
||
infprintf (is, "$pc");
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Print the arguments for INSN, which is described by OPCODE.
|
||
Use DECODE_OPERAND to get the encoding of each operand. Use BASE_PC
|
||
as the base of OP_PCREL operands. */
|
||
|
||
static void
|
||
print_insn_args (struct disassemble_info *info,
|
||
const struct mips_opcode *opcode,
|
||
const struct mips_operand *(*decode_operand) (const char *),
|
||
unsigned int insn, bfd_vma base_pc)
|
||
{
|
||
const fprintf_ftype infprintf = info->fprintf_func;
|
||
void *is = info->stream;
|
||
struct mips_print_arg_state state;
|
||
const struct mips_operand *operand;
|
||
const char *s;
|
||
|
||
init_print_arg_state (&state);
|
||
for (s = opcode->args; *s; ++s)
|
||
{
|
||
switch (*s)
|
||
{
|
||
case ',':
|
||
case '(':
|
||
case ')':
|
||
infprintf (is, "%c", *s);
|
||
break;
|
||
|
||
default:
|
||
operand = decode_operand (s);
|
||
if (!operand)
|
||
{
|
||
/* xgettext:c-format */
|
||
infprintf (is,
|
||
_("# internal error, undefined operand in `%s %s'"),
|
||
opcode->name, opcode->args);
|
||
return;
|
||
}
|
||
if (operand->type == OP_REG
|
||
&& s[1] == ','
|
||
&& s[2] == 'H'
|
||
&& opcode->name[strlen (opcode->name) - 1] == '0')
|
||
{
|
||
/* Coprocessor register 0 with sel field (MT ASE). */
|
||
const struct mips_cp0sel_name *n;
|
||
unsigned int reg, sel;
|
||
|
||
reg = mips_extract_operand (operand, insn);
|
||
s += 2;
|
||
operand = decode_operand (s);
|
||
sel = mips_extract_operand (operand, insn);
|
||
|
||
/* 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,
|
||
reg, sel);
|
||
if (n != NULL)
|
||
infprintf (is, "%s", n->name);
|
||
else
|
||
infprintf (is, "$%d,%d", reg, sel);
|
||
}
|
||
else
|
||
print_insn_arg (info, &state, opcode, operand, base_pc,
|
||
mips_extract_operand (operand, insn));
|
||
if (*s == 'm' || *s == '+')
|
||
++s;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* 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,
|
||
int word,
|
||
struct disassemble_info *info)
|
||
{
|
||
#define GET_OP(insn, field) \
|
||
(((insn) >> OP_SH_##field) & OP_MASK_##field)
|
||
static const struct mips_opcode *mips_hash[OP_MASK_OP + 1];
|
||
const fprintf_ftype infprintf = info->fprintf_func;
|
||
const struct mips_opcode *op;
|
||
static bfd_boolean init = 0;
|
||
void *is = info->stream;
|
||
|
||
/* 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 == GET_OP (op->match, 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[GET_OP (word, 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)
|
||
{
|
||
/* We always allow to disassemble the jalx instruction. */
|
||
if (!opcode_is_member (op, mips_isa, mips_ase, mips_processor)
|
||
&& strcmp (op->name, "jalx"))
|
||
continue;
|
||
|
||
/* Figure out instruction type and branch delay information. */
|
||
if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
|
||
{
|
||
if ((op->pinfo & (INSN_WRITE_GPR_31
|
||
| INSN_WRITE_GPR_D)) != 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 ((op->pinfo & 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;
|
||
|
||
infprintf (is, "%s", op->name);
|
||
|
||
if (op->args[0])
|
||
{
|
||
infprintf (is, "\t");
|
||
print_insn_args (info, op, decode_mips_operand, word,
|
||
memaddr + 4);
|
||
}
|
||
|
||
return INSNLEN;
|
||
}
|
||
}
|
||
}
|
||
#undef GET_OP
|
||
|
||
/* Handle undefined instructions. */
|
||
info->insn_type = dis_noninsn;
|
||
infprintf (is, "0x%x", word);
|
||
return INSNLEN;
|
||
}
|
||
|
||
/* Disassemble an operand for a mips16 instruction. */
|
||
|
||
static void
|
||
print_mips16_insn_arg (struct disassemble_info *info,
|
||
struct mips_print_arg_state *state,
|
||
const struct mips_opcode *opcode,
|
||
char type, bfd_vma memaddr,
|
||
unsigned insn, bfd_boolean use_extend,
|
||
unsigned extend, bfd_boolean is_offset)
|
||
{
|
||
const fprintf_ftype infprintf = info->fprintf_func;
|
||
void *is = info->stream;
|
||
const struct mips_operand *operand, *ext_operand;
|
||
unsigned int uval;
|
||
bfd_vma baseaddr;
|
||
|
||
if (!use_extend)
|
||
extend = 0;
|
||
|
||
switch (type)
|
||
{
|
||
case ',':
|
||
case '(':
|
||
case ')':
|
||
infprintf (is, "%c", type);
|
||
break;
|
||
|
||
default:
|
||
operand = decode_mips16_operand (type, FALSE);
|
||
if (!operand)
|
||
{
|
||
/* xgettext:c-format */
|
||
infprintf (is, _("# internal error, undefined operand in `%s %s'"),
|
||
opcode->name, opcode->args);
|
||
return;
|
||
}
|
||
|
||
if (operand->type == OP_SAVE_RESTORE_LIST)
|
||
{
|
||
/* Handle this case here because of the complex interation
|
||
with the EXTEND opcode. */
|
||
unsigned int amask, nargs, nstatics, nsreg, smask, frame_size, i, j;
|
||
const char *sep;
|
||
|
||
amask = extend & 0xf;
|
||
if (amask == MIPS16_ALL_ARGS)
|
||
{
|
||
nargs = 4;
|
||
nstatics = 0;
|
||
}
|
||
else if (amask == MIPS16_ALL_STATICS)
|
||
{
|
||
nargs = 0;
|
||
nstatics = 4;
|
||
}
|
||
else
|
||
{
|
||
nargs = amask >> 2;
|
||
nstatics = amask & 3;
|
||
}
|
||
|
||
sep = "";
|
||
if (nargs > 0)
|
||
{
|
||
infprintf (is, "%s", mips_gpr_names[4]);
|
||
if (nargs > 1)
|
||
infprintf (is, "-%s", mips_gpr_names[4 + nargs - 1]);
|
||
sep = ",";
|
||
}
|
||
|
||
frame_size = ((extend & 0xf0) | (insn & 0x0f)) * 8;
|
||
if (frame_size == 0 && !use_extend)
|
||
frame_size = 128;
|
||
infprintf (is, "%s%d", sep, frame_size);
|
||
|
||
if (insn & 0x40) /* $ra */
|
||
infprintf (is, ",%s", mips_gpr_names[31]);
|
||
|
||
nsreg = (extend >> 8) & 0x7;
|
||
smask = 0;
|
||
if (insn & 0x20) /* $s0 */
|
||
smask |= 1 << 0;
|
||
if (insn & 0x10) /* $s1 */
|
||
smask |= 1 << 1;
|
||
if (nsreg > 0) /* $s2-$s8 */
|
||
smask |= ((1 << nsreg) - 1) << 2;
|
||
|
||
for (i = 0; i < 9; i++)
|
||
if (smask & (1 << i))
|
||
{
|
||
infprintf (is, ",%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)
|
||
infprintf (is, "-%s", mips_gpr_names[j == 8 ? 30 : (16 + j)]);
|
||
i = j + 1;
|
||
}
|
||
/* Statics $ax - $a3. */
|
||
if (nstatics == 1)
|
||
infprintf (is, ",%s", mips_gpr_names[7]);
|
||
else if (nstatics > 0)
|
||
infprintf (is, ",%s-%s",
|
||
mips_gpr_names[7 - nstatics + 1],
|
||
mips_gpr_names[7]);
|
||
break;
|
||
}
|
||
|
||
if (is_offset && operand->type == OP_INT)
|
||
{
|
||
const struct mips_int_operand *int_op;
|
||
|
||
int_op = (const struct mips_int_operand *) operand;
|
||
info->insn_type = dis_dref;
|
||
info->data_size = 1 << int_op->shift;
|
||
}
|
||
|
||
if (operand->size == 26)
|
||
/* In this case INSN is the first two bytes of the instruction
|
||
and EXTEND is the second two bytes. */
|
||
uval = ((insn & 0x1f) << 21) | ((insn & 0x3e0) << 11) | extend;
|
||
else
|
||
{
|
||
/* Calculate the full field value. */
|
||
uval = mips_extract_operand (operand, insn);
|
||
if (use_extend)
|
||
{
|
||
ext_operand = decode_mips16_operand (type, TRUE);
|
||
if (ext_operand != operand)
|
||
{
|
||
operand = ext_operand;
|
||
if (operand->size == 16)
|
||
uval |= ((extend & 0x1f) << 11) | (extend & 0x7e0);
|
||
else if (operand->size == 15)
|
||
uval |= ((extend & 0xf) << 11) | (extend & 0x7f0);
|
||
else
|
||
uval = ((extend >> 6) & 0x1f) | (extend & 0x20);
|
||
}
|
||
}
|
||
}
|
||
|
||
baseaddr = memaddr + 2;
|
||
if (operand->type == OP_PCREL)
|
||
{
|
||
const struct mips_pcrel_operand *pcrel_op;
|
||
|
||
pcrel_op = (const struct mips_pcrel_operand *) operand;
|
||
if (!pcrel_op->include_isa_bit && use_extend)
|
||
baseaddr = memaddr - 2;
|
||
else if (!pcrel_op->include_isa_bit)
|
||
{
|
||
bfd_byte buffer[2];
|
||
|
||
/* 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 a 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. */
|
||
if (info->read_memory_func (memaddr - 4, buffer, 2, info) == 0
|
||
&& (((info->endian == BFD_ENDIAN_BIG
|
||
? bfd_getb16 (buffer)
|
||
: bfd_getl16 (buffer))
|
||
& 0xf800) == 0x1800))
|
||
baseaddr = memaddr - 4;
|
||
else if (info->read_memory_func (memaddr - 2, buffer, 2,
|
||
info) == 0
|
||
&& (((info->endian == BFD_ENDIAN_BIG
|
||
? bfd_getb16 (buffer)
|
||
: bfd_getl16 (buffer))
|
||
& 0xf81f) == 0xe800))
|
||
baseaddr = memaddr - 2;
|
||
else
|
||
baseaddr = memaddr;
|
||
}
|
||
}
|
||
|
||
print_insn_arg (info, state, opcode, operand, baseaddr + 1, uval);
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
/* Check if the given address is the last word of a MIPS16 PLT entry.
|
||
This word is data and depending on the value it may interfere with
|
||
disassembly of further PLT entries. We make use of the fact PLT
|
||
symbols are marked BSF_SYNTHETIC. */
|
||
static bfd_boolean
|
||
is_mips16_plt_tail (struct disassemble_info *info, bfd_vma addr)
|
||
{
|
||
if (info->symbols
|
||
&& info->symbols[0]
|
||
&& (info->symbols[0]->flags & BSF_SYNTHETIC)
|
||
&& addr == bfd_asymbol_value (info->symbols[0]) + 12)
|
||
return TRUE;
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/* Disassemble mips16 instructions. */
|
||
|
||
static int
|
||
print_insn_mips16 (bfd_vma memaddr, struct disassemble_info *info)
|
||
{
|
||
const fprintf_ftype infprintf = info->fprintf_func;
|
||
int status;
|
||
bfd_byte buffer[4];
|
||
int length;
|
||
int insn;
|
||
bfd_boolean use_extend;
|
||
int extend = 0;
|
||
const struct mips_opcode *op, *opend;
|
||
struct mips_print_arg_state state;
|
||
void *is = info->stream;
|
||
|
||
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->target = 0;
|
||
info->target2 = 0;
|
||
|
||
#define GET_OP(insn, field) \
|
||
(((insn) >> MIPS16OP_SH_##field) & MIPS16OP_MASK_##field)
|
||
/* Decode PLT entry's GOT slot address word. */
|
||
if (is_mips16_plt_tail (info, memaddr))
|
||
{
|
||
info->insn_type = dis_noninsn;
|
||
status = (*info->read_memory_func) (memaddr, buffer, 4, info);
|
||
if (status == 0)
|
||
{
|
||
unsigned int gotslot;
|
||
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
gotslot = bfd_getb32 (buffer);
|
||
else
|
||
gotslot = bfd_getl32 (buffer);
|
||
infprintf (is, ".word\t0x%x", gotslot);
|
||
|
||
return 4;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
info->insn_type = dis_nonbranch;
|
||
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)
|
||
{
|
||
infprintf (is, "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)
|
||
{
|
||
infprintf (is, "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 (op->args[0] == 'a' || op->args[0] == 'i')
|
||
{
|
||
if (use_extend)
|
||
{
|
||
infprintf (is, "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;
|
||
}
|
||
}
|
||
|
||
infprintf (is, "%s", op->name);
|
||
if (op->args[0] != '\0')
|
||
infprintf (is, "\t");
|
||
|
||
init_print_arg_state (&state);
|
||
for (s = op->args; *s != '\0'; s++)
|
||
{
|
||
if (*s == ','
|
||
&& s[1] == 'w'
|
||
&& GET_OP (insn, RX) == GET_OP (insn, RY))
|
||
{
|
||
/* Skip the register and the comma. */
|
||
++s;
|
||
continue;
|
||
}
|
||
if (*s == ','
|
||
&& s[1] == 'v'
|
||
&& GET_OP (insn, RZ) == GET_OP (insn, RX))
|
||
{
|
||
/* Skip the register and the comma. */
|
||
++s;
|
||
continue;
|
||
}
|
||
print_mips16_insn_arg (info, &state, op, *s, memaddr, insn,
|
||
use_extend, extend, s[1] == '(');
|
||
}
|
||
|
||
/* Figure out branch instruction type and delay slot information. */
|
||
if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
|
||
info->branch_delay_insns = 1;
|
||
if ((op->pinfo & (INSN_UNCOND_BRANCH_DELAY
|
||
| MIPS16_INSN_UNCOND_BRANCH)) != 0)
|
||
{
|
||
if ((op->pinfo & INSN_WRITE_GPR_31) != 0)
|
||
info->insn_type = dis_jsr;
|
||
else
|
||
info->insn_type = dis_branch;
|
||
}
|
||
else if ((op->pinfo & MIPS16_INSN_COND_BRANCH) != 0)
|
||
info->insn_type = dis_condbranch;
|
||
|
||
return length;
|
||
}
|
||
}
|
||
#undef GET_OP
|
||
|
||
if (use_extend)
|
||
infprintf (is, "0x%x", extend | 0xf000);
|
||
infprintf (is, "0x%x", insn);
|
||
info->insn_type = dis_noninsn;
|
||
|
||
return length;
|
||
}
|
||
|
||
/* Disassemble microMIPS instructions. */
|
||
|
||
static int
|
||
print_insn_micromips (bfd_vma memaddr, struct disassemble_info *info)
|
||
{
|
||
const fprintf_ftype infprintf = info->fprintf_func;
|
||
const struct mips_opcode *op, *opend;
|
||
void *is = info->stream;
|
||
bfd_byte buffer[2];
|
||
unsigned int higher;
|
||
unsigned int length;
|
||
int status;
|
||
unsigned int insn;
|
||
|
||
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);
|
||
|
||
if ((insn & 0xfc00) == 0x7c00)
|
||
{
|
||
/* This is a 48-bit microMIPS instruction. */
|
||
higher = insn;
|
||
|
||
status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
|
||
if (status != 0)
|
||
{
|
||
infprintf (is, "micromips 0x%x", higher);
|
||
(*info->memory_error_func) (status, memaddr + 2, info);
|
||
return -1;
|
||
}
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
insn = bfd_getb16 (buffer);
|
||
else
|
||
insn = bfd_getl16 (buffer);
|
||
higher = (higher << 16) | insn;
|
||
|
||
status = (*info->read_memory_func) (memaddr + 4, buffer, 2, info);
|
||
if (status != 0)
|
||
{
|
||
infprintf (is, "micromips 0x%x", higher);
|
||
(*info->memory_error_func) (status, memaddr + 4, info);
|
||
return -1;
|
||
}
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
insn = bfd_getb16 (buffer);
|
||
else
|
||
insn = bfd_getl16 (buffer);
|
||
infprintf (is, "0x%x%04x (48-bit insn)", higher, insn);
|
||
|
||
info->insn_type = dis_noninsn;
|
||
return 6;
|
||
}
|
||
else if ((insn & 0x1c00) == 0x0000 || (insn & 0x1000) == 0x1000)
|
||
{
|
||
/* This is a 32-bit microMIPS instruction. */
|
||
higher = insn;
|
||
|
||
status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
|
||
if (status != 0)
|
||
{
|
||
infprintf (is, "micromips 0x%x", higher);
|
||
(*info->memory_error_func) (status, memaddr + 2, info);
|
||
return -1;
|
||
}
|
||
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
insn = bfd_getb16 (buffer);
|
||
else
|
||
insn = bfd_getl16 (buffer);
|
||
|
||
insn = insn | (higher << 16);
|
||
|
||
length += 2;
|
||
}
|
||
|
||
/* FIXME: Should probably use a hash table on the major opcode here. */
|
||
|
||
opend = micromips_opcodes + bfd_micromips_num_opcodes;
|
||
for (op = micromips_opcodes; op < opend; op++)
|
||
{
|
||
if (op->pinfo != INSN_MACRO
|
||
&& !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
|
||
&& (insn & op->mask) == op->match
|
||
&& ((length == 2 && (op->mask & 0xffff0000) == 0)
|
||
|| (length == 4 && (op->mask & 0xffff0000) != 0)))
|
||
{
|
||
infprintf (is, "%s", op->name);
|
||
|
||
if (op->args[0])
|
||
{
|
||
infprintf (is, "\t");
|
||
print_insn_args (info, op, decode_micromips_operand, insn,
|
||
memaddr + length + 1);
|
||
}
|
||
|
||
/* Figure out instruction type and branch delay information. */
|
||
if ((op->pinfo
|
||
& (INSN_UNCOND_BRANCH_DELAY | INSN_COND_BRANCH_DELAY)) != 0)
|
||
info->branch_delay_insns = 1;
|
||
if (((op->pinfo & INSN_UNCOND_BRANCH_DELAY)
|
||
| (op->pinfo2 & INSN2_UNCOND_BRANCH)) != 0)
|
||
{
|
||
if ((op->pinfo & (INSN_WRITE_GPR_31 | INSN_WRITE_GPR_T)) != 0)
|
||
info->insn_type = dis_jsr;
|
||
else
|
||
info->insn_type = dis_branch;
|
||
}
|
||
else if (((op->pinfo & INSN_COND_BRANCH_DELAY)
|
||
| (op->pinfo2 & INSN2_COND_BRANCH)) != 0)
|
||
{
|
||
if ((op->pinfo & INSN_WRITE_GPR_31) != 0)
|
||
info->insn_type = dis_condjsr;
|
||
else
|
||
info->insn_type = dis_condbranch;
|
||
}
|
||
else if ((op->pinfo
|
||
& (INSN_STORE_MEMORY | INSN_LOAD_MEMORY_DELAY)) != 0)
|
||
info->insn_type = dis_dref;
|
||
|
||
return length;
|
||
}
|
||
}
|
||
|
||
infprintf (is, "0x%x", insn);
|
||
info->insn_type = dis_noninsn;
|
||
|
||
return length;
|
||
}
|
||
|
||
/* Return 1 if a symbol associated with the location being disassembled
|
||
indicates a compressed (MIPS16 or microMIPS) mode. We iterate over
|
||
all the symbols at the address being considered assuming if at least
|
||
one of them indicates code compression, then such code has been
|
||
genuinely produced here (other symbols could have been derived from
|
||
function symbols defined elsewhere or could define data). Otherwise,
|
||
return 0. */
|
||
|
||
static bfd_boolean
|
||
is_compressed_mode_p (struct disassemble_info *info)
|
||
{
|
||
int i;
|
||
int l;
|
||
|
||
for (i = info->symtab_pos, l = i + info->num_symbols; i < l; i++)
|
||
if (((info->symtab[i])->flags & BSF_SYNTHETIC) != 0
|
||
&& ((!micromips_ase
|
||
&& ELF_ST_IS_MIPS16 ((*info->symbols)->udata.i))
|
||
|| (micromips_ase
|
||
&& ELF_ST_IS_MICROMIPS ((*info->symbols)->udata.i))))
|
||
return 1;
|
||
else if (bfd_asymbol_flavour (info->symtab[i]) == bfd_target_elf_flavour
|
||
&& info->symtab[i]->section == info->section)
|
||
{
|
||
elf_symbol_type *symbol = (elf_symbol_type *) info->symtab[i];
|
||
if ((!micromips_ase
|
||
&& ELF_ST_IS_MIPS16 (symbol->internal_elf_sym.st_other))
|
||
|| (micromips_ase
|
||
&& ELF_ST_IS_MICROMIPS (symbol->internal_elf_sym.st_other)))
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* 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)
|
||
{
|
||
int (*print_insn_compr) (bfd_vma, struct disassemble_info *);
|
||
bfd_byte buffer[INSNLEN];
|
||
int status;
|
||
|
||
set_default_mips_dis_options (info);
|
||
parse_mips_dis_options (info->disassembler_options);
|
||
|
||
if (info->mach == bfd_mach_mips16)
|
||
return print_insn_mips16 (memaddr, info);
|
||
if (info->mach == bfd_mach_mips_micromips)
|
||
return print_insn_micromips (memaddr, info);
|
||
|
||
print_insn_compr = !micromips_ase ? print_insn_mips16 : print_insn_micromips;
|
||
|
||
#if 1
|
||
/* FIXME: If odd address, this is CLEARLY a compressed instruction. */
|
||
/* Only a few tools will work this way. */
|
||
if (memaddr & 0x01)
|
||
return print_insn_compr (memaddr, info);
|
||
#endif
|
||
|
||
#if SYMTAB_AVAILABLE
|
||
if (is_compressed_mode_p (info))
|
||
return print_insn_compr (memaddr, info);
|
||
#endif
|
||
|
||
status = (*info->read_memory_func) (memaddr, buffer, INSNLEN, info);
|
||
if (status == 0)
|
||
{
|
||
int insn;
|
||
|
||
if (endianness == BFD_ENDIAN_BIG)
|
||
insn = bfd_getb32 (buffer);
|
||
else
|
||
insn = 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\
|
||
virt Recognize the virtualization ASE instructions.\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"));
|
||
}
|