diff options
Diffstat (limited to 'contrib/binutils/opcodes/mips-dis.c')
| -rw-r--r-- | contrib/binutils/opcodes/mips-dis.c | 1835 |
1 files changed, 1835 insertions, 0 deletions
diff --git a/contrib/binutils/opcodes/mips-dis.c b/contrib/binutils/opcodes/mips-dis.c new file mode 100644 index 0000000..43fcb3c --- /dev/null +++ b/contrib/binutils/opcodes/mips-dis.c @@ -0,0 +1,1835 @@ +/* Print mips instructions for GDB, the GNU debugger, or for objdump. + Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, + 2000, 2001, 2002, 2003 + Free Software Foundation, Inc. + Contributed by Nobuyuki Hikichi(hikichi@sra.co.jp). + +This file is part of GDB, GAS, and the GNU binutils. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "sysdep.h" +#include "dis-asm.h" +#include "libiberty.h" +#include "opcode/mips.h" +#include "opintl.h" + +/* FIXME: These are needed to figure out if the code is mips16 or + not. The low bit of the address is often a good indicator. No + symbol table is available when this code runs out in an embedded + system as when it is used for disassembler support in a monitor. */ + +#if !defined(EMBEDDED_ENV) +#define SYMTAB_AVAILABLE 1 +#include "elf-bfd.h" +#include "elf/mips.h" +#endif + +/* Mips instructions are at maximum this many bytes long. */ +#define INSNLEN 4 + +static void set_default_mips_dis_options + PARAMS ((struct disassemble_info *)); +static void parse_mips_dis_option + PARAMS ((const char *, unsigned int)); +static void parse_mips_dis_options + PARAMS ((const char *)); +static int _print_insn_mips + PARAMS ((bfd_vma, struct disassemble_info *, enum bfd_endian)); +static int print_insn_mips + PARAMS ((bfd_vma, unsigned long int, struct disassemble_info *)); +static void print_insn_args + PARAMS ((const char *, unsigned long, bfd_vma, struct disassemble_info *)); +static int print_insn_mips16 + PARAMS ((bfd_vma, struct disassemble_info *)); +static int is_newabi + PARAMS ((Elf_Internal_Ehdr *)); +static void print_mips16_insn_arg + PARAMS ((int, const struct mips_opcode *, int, bfd_boolean, int, bfd_vma, + struct disassemble_info *)); + +/* FIXME: These should be shared with gdb somehow. */ + +struct mips_cp0sel_name { + unsigned int cp0reg; + unsigned int sel; + const char * const name; +}; + +/* The mips16 register names. */ +static const char * const mips16_reg_names[] = { + "s0", "s1", "v0", "v1", "a0", "a1", "a2", "a3" +}; + +static const char * const mips_gpr_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", "$31" +}; + +static const char * const mips_gpr_names_oldabi[32] = { + "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", + "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", + "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", + "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra" +}; + +static const char * const mips_gpr_names_newabi[32] = { + "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", + "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3", + "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", + "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra" +}; + +static const char * const mips_fpr_names_numeric[32] = { + "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", + "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", + "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", + "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31" +}; + +static const char * const mips_fpr_names_32[32] = { + "fv0", "fv0f", "fv1", "fv1f", "ft0", "ft0f", "ft1", "ft1f", + "ft2", "ft2f", "ft3", "ft3f", "fa0", "fa0f", "fa1", "fa1f", + "ft4", "ft4f", "ft5", "ft5f", "fs0", "fs0f", "fs1", "fs1f", + "fs2", "fs2f", "fs3", "fs3f", "fs4", "fs4f", "fs5", "fs5f" +}; + +static const char * const mips_fpr_names_n32[32] = { + "fv0", "ft14", "fv1", "ft15", "ft0", "ft1", "ft2", "ft3", + "ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3", + "fa4", "fa5", "fa6", "fa7", "fs0", "ft8", "fs1", "ft9", + "fs2", "ft10", "fs3", "ft11", "fs4", "ft12", "fs5", "ft13" +}; + +static const char * const mips_fpr_names_64[32] = { + "fv0", "ft12", "fv1", "ft13", "ft0", "ft1", "ft2", "ft3", + "ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3", + "fa4", "fa5", "fa6", "fa7", "ft8", "ft9", "ft10", "ft11", + "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7" +}; + +static const char * const mips_cp0_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_cp0_names_mips3264[32] = { + "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1", + "c0_context", "c0_pagemask", "c0_wired", "$7", + "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare", + "c0_status", "c0_cause", "c0_epc", "c0_prid", + "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi", + "c0_xcontext", "$21", "$22", "c0_debug", + "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr", + "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave", +}; + +static const struct mips_cp0sel_name mips_cp0sel_names_mips3264[] = { + { 16, 1, "c0_config1" }, + { 16, 2, "c0_config2" }, + { 16, 3, "c0_config3" }, + { 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_cp0_names_mips3264r2[32] = { + "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1", + "c0_context", "c0_pagemask", "c0_wired", "c0_hwrena", + "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare", + "c0_status", "c0_cause", "c0_epc", "c0_prid", + "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi", + "c0_xcontext", "$21", "$22", "c0_debug", + "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr", + "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave", +}; + +static const struct mips_cp0sel_name mips_cp0sel_names_mips3264r2[] = { + { 4, 1, "c0_contextconfig" }, + { 5, 1, "c0_pagegrain" }, + { 12, 1, "c0_intctl" }, + { 12, 2, "c0_srsctl" }, + { 12, 3, "c0_srsmap" }, + { 15, 1, "c0_ebase" }, + { 16, 1, "c0_config1" }, + { 16, 2, "c0_config2" }, + { 16, 3, "c0_config3" }, + { 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" }, + { 23, 1, "c0_tracecontrol" }, + { 23, 2, "c0_tracecontrol2" }, + { 23, 3, "c0_usertracedata" }, + { 23, 4, "c0_tracebpc" }, + { 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" }, + { 28, 2, "c0_taglo1" }, + { 28, 3, "c0_datalo1" }, + { 28, 4, "c0_taglo2" }, + { 28, 5, "c0_datalo2" }, + { 28, 6, "c0_taglo3" }, + { 28, 7, "c0_datalo3" }, + { 29, 1, "c0_datahi" }, + { 29, 2, "c0_taghi1" }, + { 29, 3, "c0_datahi1" }, + { 29, 4, "c0_taghi2" }, + { 29, 5, "c0_datahi2" }, + { 29, 6, "c0_taghi3" }, + { 29, 7, "c0_datahi3" }, +}; + +/* SB-1: MIPS64 (mips_cp0_names_mips3264) with minor mods. */ +static const char * const mips_cp0_names_sb1[32] = { + "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1", + "c0_context", "c0_pagemask", "c0_wired", "$7", + "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare", + "c0_status", "c0_cause", "c0_epc", "c0_prid", + "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi", + "c0_xcontext", "$21", "$22", "c0_debug", + "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr_i", + "c0_taglo_i", "c0_taghi_i", "c0_errorepc", "c0_desave", +}; + +static const struct mips_cp0sel_name mips_cp0sel_names_sb1[] = { + { 16, 1, "c0_config1" }, + { 18, 1, "c0_watchlo,1" }, + { 19, 1, "c0_watchhi,1" }, + { 22, 0, "c0_perftrace" }, + { 23, 3, "c0_edebug" }, + { 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" }, + { 26, 1, "c0_buserr_pa" }, + { 27, 1, "c0_cacheerr_d" }, + { 27, 3, "c0_cacheerr_d_pa" }, + { 28, 1, "c0_datalo_i" }, + { 28, 2, "c0_taglo_d" }, + { 28, 3, "c0_datalo_d" }, + { 29, 1, "c0_datahi_i" }, + { 29, 2, "c0_taghi_d" }, + { 29, 3, "c0_datahi_d" }, +}; + +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; + 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, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + + { "r3000", 1, bfd_mach_mips3000, CPU_R3000, ISA_MIPS1, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "r3900", 1, bfd_mach_mips3900, CPU_R3900, ISA_MIPS1, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "r4000", 1, bfd_mach_mips4000, CPU_R4000, ISA_MIPS3, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "r4010", 1, bfd_mach_mips4010, CPU_R4010, ISA_MIPS2, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "vr4100", 1, bfd_mach_mips4100, CPU_VR4100, ISA_MIPS3, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "vr4111", 1, bfd_mach_mips4111, CPU_R4111, ISA_MIPS3, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "vr4120", 1, bfd_mach_mips4120, CPU_VR4120, ISA_MIPS3, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "r4300", 1, bfd_mach_mips4300, CPU_R4300, ISA_MIPS3, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "r4400", 1, bfd_mach_mips4400, CPU_R4400, ISA_MIPS3, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "r4600", 1, bfd_mach_mips4600, CPU_R4600, ISA_MIPS3, + mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric }, + { "r4650", 1, bfd_mach_mips4650, CPU_R4650, ISA_MIPS3, + 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, + 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, + 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, + 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, + 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; + +static const struct mips_abi_choice *choose_abi_by_name + PARAMS ((const char *, unsigned int)); +static const struct mips_arch_choice *choose_arch_by_name + PARAMS ((const char *, unsigned int)); +static const struct mips_arch_choice *choose_arch_by_number + PARAMS ((unsigned long)); +static const struct mips_cp0sel_name *lookup_mips_cp0sel_name + PARAMS ((const struct mips_cp0sel_name *, unsigned int, unsigned int, + unsigned int)); + +static const struct mips_abi_choice * +choose_abi_by_name (name, namelen) + 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 (name, namelen) + 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 (mach) + 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; +} + +void +set_default_mips_dis_options (info) + 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; + + /* 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 +} + +void +parse_mips_dis_option (option, len) + 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; + + /* 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. */ +} + +void +parse_mips_dis_options (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(names, len, cp0reg, sel) + const struct mips_cp0sel_name *names; + unsigned int len, cp0reg, 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 (d, l, pc, info) + 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; + + default: + /* xgettext:c-format */ + (*info->fprintf_func) (info->stream, + _("# internal error, undefined extension sequence (+%c)"), + *d); + return; + } + 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%x", + (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%x", + (l >> OP_SH_SHAMT) & OP_MASK_SHAMT); + break; + + case 'c': + (*info->fprintf_func) (info->stream, "0x%x", + (l >> OP_SH_CODE) & OP_MASK_CODE); + break; + + case 'q': + (*info->fprintf_func) (info->stream, "0x%x", + (l >> OP_SH_CODE2) & OP_MASK_CODE2); + break; + + case 'C': + (*info->fprintf_func) (info->stream, "0x%x", + (l >> OP_SH_COPZ) & OP_MASK_COPZ); + break; + + case 'B': + (*info->fprintf_func) (info->stream, "0x%x", + (l >> OP_SH_CODE20) & OP_MASK_CODE20); + break; + + case 'J': + (*info->fprintf_func) (info->stream, "0x%x", + (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, "$%d", + (l >> OP_SH_RT) & OP_MASK_RT); + break; + + case 'G': + /* Coprocessor register for mtcN instructions, et al. Note + that FPU (cp1) instructions disassemble this field using + 'S' format. Therefore, we only need to worry about cp0, + cp2, and cp3. */ + op = (l >> OP_SH_OP) & OP_MASK_OP; + if (op == OP_OP_COP0) + (*info->fprintf_func) (info->stream, "%s", + mips_cp0_names[(l >> OP_SH_RD) & OP_MASK_RD]); + else + (*info->fprintf_func) (info->stream, "$%d", + (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, "$fcc%d", + (l >> OP_SH_BCC) & OP_MASK_BCC); + break; + + case 'M': + (*info->fprintf_func) (info->stream, "$fcc%d", + (l >> OP_SH_CCC) & OP_MASK_CCC); + break; + + case 'P': + (*info->fprintf_func) (info->stream, "%d", + (l >> OP_SH_PERFREG) & OP_MASK_PERFREG); + break; + + case 'e': + (*info->fprintf_func) (info->stream, "%d", + (l >> OP_SH_VECBYTE) & OP_MASK_VECBYTE); + break; + + case '%': + (*info->fprintf_func) (info->stream, "%d", + (l >> OP_SH_VECALIGN) & OP_MASK_VECALIGN); + break; + + case 'H': + (*info->fprintf_func) (info->stream, "%d", + (l >> OP_SH_SEL) & OP_MASK_SEL); + break; + + case 'O': + (*info->fprintf_func) (info->stream, "%d", + (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, "$v%d[%d]", + (l >> OP_SH_FT) & OP_MASK_FT, + vsel >> 1); + } + else if ((vsel & 0x08) == 0) + { + (*info->fprintf_func) (info->stream, "$v%d", + (l >> OP_SH_FT) & OP_MASK_FT); + } + else + { + (*info->fprintf_func) (info->stream, "0x%x", + (l >> OP_SH_FT) & OP_MASK_FT); + } + } + break; + + case 'X': + (*info->fprintf_func) (info->stream, "$v%d", + (l >> OP_SH_FD) & OP_MASK_FD); + break; + + case 'Y': + (*info->fprintf_func) (info->stream, "$v%d", + (l >> OP_SH_FS) & OP_MASK_FS); + break; + + case 'Z': + (*info->fprintf_func) (info->stream, "$v%d", + (l >> OP_SH_FT) & OP_MASK_FT); + break; + + default: + /* xgettext:c-format */ + (*info->fprintf_func) (info->stream, + _("# internal error, undefined modifier(%c)"), + *d); + return; + } + } +} + +/* Check if the object uses NewABI conventions. */ + +static int +is_newabi (header) + 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; +} + +/* 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 (memaddr, word, info) + bfd_vma memaddr; + unsigned long int word; + struct disassemble_info *info; +{ + register 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) + 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 && (word & op->mask) == op->match) + { + register 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%x", word); + return INSNLEN; +} + +/* 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 (memaddr, info, endianness) + 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 (memaddr, info) + bfd_vma memaddr; + struct disassemble_info *info; +{ + return _print_insn_mips (memaddr, info, BFD_ENDIAN_BIG); +} + +int +print_insn_little_mips (memaddr, info) + bfd_vma memaddr; + struct disassemble_info *info; +{ + return _print_insn_mips (memaddr, info, BFD_ENDIAN_LITTLE); +} + +/* Disassemble mips16 instructions. */ + +static int +print_insn_mips16 (memaddr, info) + 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 && (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; +} + +/* Disassemble an operand for a mips16 instruction. */ + +static void +print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) + 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; + + default: + /* xgettext:c-format */ + (*info->fprintf_func) + (info->stream, + _("# internal disassembler error, unrecognised modifier (%c)"), + type); + abort (); + } +} + +void +print_mips_disassembler_options (stream) + 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")); +} |
