--- /dev/null
+/* Interface between the opcode library and its callers.
+ Written by Cygnus Support, 1993.
+
+ The opcode library (libopcodes.a) provides instruction decoders for
+ a large variety of instruction sets, callable with an identical
+ interface, for making instruction-processing programs more independent
+ of the instruction set being processed. */
+
+#ifndef DIS_ASM_H
+#define DIS_ASM_H
+
+#include <stdio.h>
+#include "bfd.h"
+
+typedef int (*fprintf_ftype) PARAMS((FILE*, const char*, ...));
+
+enum dis_insn_type {
+ dis_noninsn, /* Not a valid instruction */
+ dis_nonbranch, /* Not a branch instruction */
+ dis_branch, /* Unconditional branch */
+ dis_condbranch, /* Conditional branch */
+ dis_jsr, /* Jump to subroutine */
+ dis_condjsr, /* Conditional jump to subroutine */
+ dis_dref, /* Data reference instruction */
+ dis_dref2 /* Two data references in instruction */
+};
+
+/* This struct is passed into the instruction decoding routine,
+ and is passed back out into each callback. The various fields are used
+ for conveying information from your main routine into your callbacks,
+ for passing information into the instruction decoders (such as the
+ addresses of the callback functions), or for passing information
+ back from the instruction decoders to their callers.
+
+ It must be initialized before it is first passed; this can be done
+ by hand, or using one of the initialization macros below. */
+
+typedef struct disassemble_info {
+ fprintf_ftype fprintf_func;
+ FILE *stream;
+ PTR application_data;
+
+ /* Target description. We could replace this with a pointer to the bfd,
+ but that would require one. There currently isn't any such requirement
+ so to avoid introducing one we record these explicitly. */
+ /* The bfd_flavour. This can be bfd_target_unknown_flavour. */
+ enum bfd_flavour flavour;
+ /* The bfd_arch value. */
+ enum bfd_architecture arch;
+ /* The bfd_mach value. */
+ unsigned long mach;
+ /* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */
+ enum bfd_endian endian;
+
+ /* An array of pointers to symbols either at the location being disassembled
+ or at the start of the function being disassembled. The array is sorted
+ so that the first symbol is intended to be the one used. The others are
+ present for any misc. purposes. This is not set reliably, but if it is
+ not NULL, it is correct. */
+ asymbol **symbols;
+ /* Number of symbols in array. */
+ int num_symbols;
+
+ /* For use by the disassembler.
+ The top 16 bits are reserved for public use (and are documented here).
+ The bottom 16 bits are for the internal use of the disassembler. */
+ unsigned long flags;
+#define INSN_HAS_RELOC 0x80000000
+ PTR private_data;
+
+ /* Function used to get bytes to disassemble. MEMADDR is the
+ address of the stuff to be disassembled, MYADDR is the address to
+ put the bytes in, and LENGTH is the number of bytes to read.
+ INFO is a pointer to this struct.
+ Returns an errno value or 0 for success. */
+ int (*read_memory_func)
+ PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, int length,
+ struct disassemble_info *info));
+
+ /* Function which should be called if we get an error that we can't
+ recover from. STATUS is the errno value from read_memory_func and
+ MEMADDR is the address that we were trying to read. INFO is a
+ pointer to this struct. */
+ void (*memory_error_func)
+ PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
+
+ /* Function called to print ADDR. */
+ void (*print_address_func)
+ PARAMS ((bfd_vma addr, struct disassemble_info *info));
+
+ /* Function called to determine if there is a symbol at the given ADDR.
+ If there is, the function returns 1, otherwise it returns 0.
+ This is used by ports which support an overlay manager where
+ the overlay number is held in the top part of an address. In
+ some circumstances we want to include the overlay number in the
+ address, (normally because there is a symbol associated with
+ that address), but sometimes we want to mask out the overlay bits. */
+ int (* symbol_at_address_func)
+ PARAMS ((bfd_vma addr, struct disassemble_info * info));
+
+ /* These are for buffer_read_memory. */
+ bfd_byte *buffer;
+ bfd_vma buffer_vma;
+ int buffer_length;
+
+ /* This variable may be set by the instruction decoder. It suggests
+ the number of bytes objdump should display on a single line. If
+ the instruction decoder sets this, it should always set it to
+ the same value in order to get reasonable looking output. */
+ int bytes_per_line;
+
+ /* the next two variables control the way objdump displays the raw data */
+ /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
+ /* output will look like this:
+ 00: 00000000 00000000
+ with the chunks displayed according to "display_endian". */
+ int bytes_per_chunk;
+ enum bfd_endian display_endian;
+
+ /* Results from instruction decoders. Not all decoders yet support
+ this information. This info is set each time an instruction is
+ decoded, and is only valid for the last such instruction.
+
+ To determine whether this decoder supports this information, set
+ insn_info_valid to 0, decode an instruction, then check it. */
+
+ char insn_info_valid; /* Branch info has been set. */
+ char branch_delay_insns; /* How many sequential insn's will run before
+ a branch takes effect. (0 = normal) */
+ char data_size; /* Size of data reference in insn, in bytes */
+ enum dis_insn_type insn_type; /* Type of instruction */
+ bfd_vma target; /* Target address of branch or dref, if known;
+ zero if unknown. */
+ bfd_vma target2; /* Second target address for dref2 */
+
+} disassemble_info;
+
+\f
+/* Standard disassemblers. Disassemble one instruction at the given
+ target address. Return number of bytes processed. */
+typedef int (*disassembler_ftype)
+ PARAMS((bfd_vma, disassemble_info *));
+
+extern int print_insn_big_mips PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_little_mips PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_i386 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_m68k PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_z8001 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_z8002 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_h8300 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_h8300h PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_h8300s PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_h8500 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
+extern disassembler_ftype arc_get_disassembler PARAMS ((int, int));
+extern int print_insn_big_arm PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_little_arm PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_sparc PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_big_a29k PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_little_a29k PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_i960 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_sh PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_shl PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_hppa PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_m32r PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_m88k PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_mn10200 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_mn10300 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_ns32k PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_big_powerpc PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_little_powerpc PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_rs6000 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_w65 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_d10v PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_v850 PARAMS ((bfd_vma, disassemble_info*));
+extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
+
+/* Fetch the disassembler for a given BFD, if that support is available. */
+extern disassembler_ftype disassembler PARAMS ((bfd *));
+
+\f
+/* This block of definitions is for particular callers who read instructions
+ into a buffer before calling the instruction decoder. */
+
+/* Here is a function which callers may wish to use for read_memory_func.
+ It gets bytes from a buffer. */
+extern int buffer_read_memory
+ PARAMS ((bfd_vma, bfd_byte *, int, struct disassemble_info *));
+
+/* This function goes with buffer_read_memory.
+ It prints a message using info->fprintf_func and info->stream. */
+extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
+
+
+/* Just print the address in hex. This is included for completeness even
+ though both GDB and objdump provide their own (to print symbolic
+ addresses). */
+extern void generic_print_address
+ PARAMS ((bfd_vma, struct disassemble_info *));
+
+/* Always true. */
+extern int generic_symbol_at_address
+ PARAMS ((bfd_vma, struct disassemble_info *));
+
+/* Macro to initialize a disassemble_info struct. This should be called
+ by all applications creating such a struct. */
+#define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
+ (INFO).flavour = bfd_target_unknown_flavour, \
+ (INFO).arch = bfd_arch_unknown, \
+ (INFO).mach = 0, \
+ (INFO).endian = BFD_ENDIAN_UNKNOWN, \
+ INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC)
+
+/* Call this macro to initialize only the internal variables for the
+ disassembler. Architecture dependent things such as byte order, or machine
+ variant are not touched by this macro. This makes things much easier for
+ GDB which must initialize these things seperatly. */
+
+#define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
+ (INFO).fprintf_func = (FPRINTF_FUNC), \
+ (INFO).stream = (STREAM), \
+ (INFO).symbols = NULL, \
+ (INFO).num_symbols = 0, \
+ (INFO).buffer = NULL, \
+ (INFO).buffer_vma = 0, \
+ (INFO).buffer_length = 0, \
+ (INFO).read_memory_func = buffer_read_memory, \
+ (INFO).memory_error_func = perror_memory, \
+ (INFO).print_address_func = generic_print_address, \
+ (INFO).symbol_at_address_func = generic_symbol_at_address, \
+ (INFO).flags = 0, \
+ (INFO).bytes_per_line = 0, \
+ (INFO).bytes_per_chunk = 0, \
+ (INFO).display_endian = BFD_ENDIAN_UNKNOWN, \
+ (INFO).insn_info_valid = 0
+
+#endif /* ! defined (DIS_ASM_H) */
#include "thunk.h"
/* all dynamically generated functions begin with this code */
-#define OP_PREFIX "op"
+#define OP_PREFIX "op_"
int elf_must_swap(Elf32_Ehdr *h)
{
/* generate op code */
void gen_code(const char *name, unsigned long offset, unsigned long size,
FILE *outfile, uint8_t *text, void *relocs, int nb_relocs, int reloc_sh_type,
- Elf32_Sym *symtab, char *strtab)
+ Elf32_Sym *symtab, char *strtab, int gen_switch)
{
int copy_size = 0;
uint8_t *p_start, *p_end;
if (n >= MAX_ARGS)
error("too many arguments in %s", name);
args_present[n - 1] = 1;
- } else {
- fprintf(outfile, "extern char %s;\n", sym_name);
}
}
}
if (n >= MAX_ARGS)
error("too many arguments in %s", name);
args_present[n - 1] = 1;
- } else {
- fprintf(outfile, "extern char %s;\n", sym_name);
}
}
}
error("inconsistent argument numbering in %s", name);
}
- /* output C code */
- fprintf(outfile, "extern void %s();\n", name);
- fprintf(outfile, "static inline void gen_%s(", name);
- if (nb_args == 0) {
- fprintf(outfile, "void");
- } else {
- for(i = 0; i < nb_args; i++) {
- if (i != 0)
- fprintf(outfile, ", ");
- fprintf(outfile, "long param%d", i + 1);
+ if (gen_switch) {
+
+ /* output C code */
+ fprintf(outfile, "case INDEX_%s: {\n", name);
+ if (nb_args > 0) {
+ fprintf(outfile, " long ");
+ for(i = 0; i < nb_args; i++) {
+ if (i != 0)
+ fprintf(outfile, ", ");
+ fprintf(outfile, "param%d", i + 1);
+ }
+ fprintf(outfile, ";\n");
}
- }
- fprintf(outfile, ")\n");
- fprintf(outfile, "{\n");
- fprintf(outfile, " memcpy(gen_code_ptr, &%s, %d);\n", name, copy_size);
-
- /* patch relocations */
- switch(e_machine) {
- case EM_386:
- {
+ fprintf(outfile, " extern void %s();\n", name);
+
+ if (reloc_sh_type == SHT_REL) {
Elf32_Rel *rel;
- char name[256];
- int type;
- long addend;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
+ if (!strstart(sym_name, "__op_param", &p)) {
+ fprintf(outfile, "extern char %s;\n", sym_name);
+ }
+ }
+ }
+ } else {
+ Elf32_Rela *rel;
+ for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
+ if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
+ sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
+ if (!strstart(sym_name, "__op_param", &p)) {
+ fprintf(outfile, "extern char %s;\n", sym_name);
+ }
+ }
+ }
+ }
+
+ fprintf(outfile, " memcpy(gen_code_ptr, &%s, %d);\n", name, copy_size);
+ for(i = 0; i < nb_args; i++) {
+ fprintf(outfile, " param%d = *opparam_ptr++;\n", i + 1);
+ }
+
+ /* patch relocations */
+ switch(e_machine) {
+ case EM_386:
+ {
+ Elf32_Rel *rel;
+ char name[256];
+ int type;
+ long addend;
+ for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
+ if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
+ sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
if (strstart(sym_name, "__op_param", &p)) {
snprintf(name, sizeof(name), "param%s", p);
} else {
error("unsupported i386 relocation (%d)", type);
}
}
+ }
+ }
+ break;
+ default:
+ error("unsupported CPU for relocations (%d)", e_machine);
+ }
+ fprintf(outfile, " gen_code_ptr += %d;\n", copy_size);
+ fprintf(outfile, "}\n");
+ fprintf(outfile, "break;\n\n");
+ } else {
+ fprintf(outfile, "static inline void gen_%s(", name);
+ if (nb_args == 0) {
+ fprintf(outfile, "void");
+ } else {
+ for(i = 0; i < nb_args; i++) {
+ if (i != 0)
+ fprintf(outfile, ", ");
+ fprintf(outfile, "long param%d", i + 1);
}
}
- break;
- default:
- error("unsupported CPU for relocations (%d)", e_machine);
+ fprintf(outfile, ")\n");
+ fprintf(outfile, "{\n");
+ for(i = 0; i < nb_args; i++) {
+ fprintf(outfile, " *gen_opparam_ptr++ = param%d;\n", i + 1);
+ }
+ fprintf(outfile, " *gen_opc_ptr++ = INDEX_%s;\n", name);
+ fprintf(outfile, "}\n\n");
}
-
-
- fprintf(outfile, " gen_code_ptr += %d;\n", copy_size);
- fprintf(outfile, "}\n\n");
}
/* load an elf object file */
-int load_elf(const char *filename, FILE *outfile)
+int load_elf(const char *filename, FILE *outfile, int do_print_enum)
{
int fd;
Elf32_Ehdr ehdr;
error("unsupported CPU (e_machine=%d)", e_machine);
}
- fprintf(outfile, "#include \"gen-%s.h\"\n\n", cpu_name);
+ if (do_print_enum) {
+ fprintf(outfile, "DEF(end)\n");
+ for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
+ const char *name, *p;
+ name = strtab + sym->st_name;
+ if (strstart(name, OP_PREFIX, &p)) {
+ fprintf(outfile, "DEF(%s)\n", p);
+ }
+ }
+ } else {
+ /* generate big code generation switch */
+fprintf(outfile,
+"int dyngen_code(uint8_t *gen_code_buf,\n"
+" const uint16_t *opc_buf, const uint32_t *opparam_buf)\n"
+"{\n"
+" uint8_t *gen_code_ptr;\n"
+" const uint16_t *opc_ptr;\n"
+" const uint32_t *opparam_ptr;\n"
+" gen_code_ptr = gen_code_buf;\n"
+" opc_ptr = opc_buf;\n"
+" opparam_ptr = opparam_buf;\n"
+" for(;;) {\n"
+" switch(*opc_ptr++) {\n"
+);
- for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
- const char *name;
- name = strtab + sym->st_name;
- if (strstart(name, "op_", NULL) ||
- strstart(name, "op1_", NULL) ||
- strstart(name, "op2_", NULL) ||
- strstart(name, "op3_", NULL)) {
+ for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
+ const char *name;
+ name = strtab + sym->st_name;
+ if (strstart(name, OP_PREFIX, NULL)) {
#if 0
- printf("%4d: %s pos=0x%08x len=%d\n",
- i, name, sym->st_value, sym->st_size);
+ printf("%4d: %s pos=0x%08x len=%d\n",
+ i, name, sym->st_value, sym->st_size);
#endif
- if (sym->st_shndx != (text_sec - shdr))
- error("invalid section for opcode (0x%x)", sym->st_shndx);
- gen_code(name, sym->st_value, sym->st_size, outfile,
- text, relocs, nb_relocs, reloc_sh_type, symtab, strtab);
+ if (sym->st_shndx != (text_sec - shdr))
+ error("invalid section for opcode (0x%x)", sym->st_shndx);
+ gen_code(name, sym->st_value, sym->st_size, outfile,
+ text, relocs, nb_relocs, reloc_sh_type, symtab, strtab, 1);
+ }
+ }
+
+fprintf(outfile,
+" default:\n"
+" goto the_end;\n"
+" }\n"
+" }\n"
+" the_end:\n"
+);
+
+/* generate a return */
+ switch(e_machine) {
+ case EM_386:
+ fprintf(outfile, "*gen_code_ptr++ = 0xc3; /* ret */\n");
+ break;
+ default:
+ error("no return generation for cpu '%s'", cpu_name);
+ }
+
+ fprintf(outfile, "return gen_code_ptr - gen_code_buf;\n");
+ fprintf(outfile, "}\n\n");
+
+/* generate gen_xxx functions */
+/* XXX: suppress the use of these functions to simplify code */
+ for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
+ const char *name;
+ name = strtab + sym->st_name;
+ if (strstart(name, OP_PREFIX, NULL)) {
+ if (sym->st_shndx != (text_sec - shdr))
+ error("invalid section for opcode (0x%x)", sym->st_shndx);
+ gen_code(name, sym->st_value, sym->st_size, outfile,
+ text, relocs, nb_relocs, reloc_sh_type, symtab, strtab, 0);
+ }
}
}
void usage(void)
{
printf("dyngen (c) 2003 Fabrice Bellard\n"
- "usage: dyngen [-o outfile] objfile\n"
- "Generate a dynamic code generator from an object file\n");
+ "usage: dyngen [-o outfile] [-c] objfile\n"
+ "Generate a dynamic code generator from an object file\n"
+ "-c output enum of operations\n"
+ );
exit(1);
}
int main(int argc, char **argv)
{
- int c;
+ int c, do_print_enum;
const char *filename, *outfilename;
FILE *outfile;
outfilename = "out.c";
+ do_print_enum = 0;
for(;;) {
- c = getopt(argc, argv, "ho:");
+ c = getopt(argc, argv, "ho:c");
if (c == -1)
break;
switch(c) {
case 'o':
outfilename = optarg;
break;
+ case 'c':
+ do_print_enum = 1;
+ break;
}
}
if (optind >= argc)
outfile = fopen(outfilename, "w");
if (!outfile)
error("could not open '%s'", outfilename);
- load_elf(filename, outfile);
+ load_elf(filename, outfile, do_print_enum);
fclose(outfile);
return 0;
}
--- /dev/null
+/* Print i386 instructions for GDB, the GNU debugger.
+ Copyright (C) 1988, 89, 91, 93, 94, 95, 96, 97, 1998
+ Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+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. */
+
+/*
+ * 80386 instruction printer by Pace Willisson (pace@prep.ai.mit.edu)
+ * July 1988
+ * modified by John Hassey (hassey@dg-rtp.dg.com)
+ */
+
+/*
+ * The main tables describing the instructions is essentially a copy
+ * of the "Opcode Map" chapter (Appendix A) of the Intel 80386
+ * Programmers Manual. Usually, there is a capital letter, followed
+ * by a small letter. The capital letter tell the addressing mode,
+ * and the small letter tells about the operand size. Refer to
+ * the Intel manual for details.
+ */
+
+#include "dis-asm.h"
+
+#define MAXLEN 20
+
+#include <setjmp.h>
+
+static int fetch_data PARAMS ((struct disassemble_info *, bfd_byte *));
+
+struct dis_private
+{
+ /* Points to first byte not fetched. */
+ bfd_byte *max_fetched;
+ bfd_byte the_buffer[MAXLEN];
+ bfd_vma insn_start;
+ jmp_buf bailout;
+};
+
+/* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive)
+ to ADDR (exclusive) are valid. Returns 1 for success, longjmps
+ on error. */
+#define FETCH_DATA(info, addr) \
+ ((addr) <= ((struct dis_private *)(info->private_data))->max_fetched \
+ ? 1 : fetch_data ((info), (addr)))
+
+static int
+fetch_data (info, addr)
+ struct disassemble_info *info;
+ bfd_byte *addr;
+{
+ int status;
+ struct dis_private *priv = (struct dis_private *)info->private_data;
+ bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer);
+
+ status = (*info->read_memory_func) (start,
+ priv->max_fetched,
+ addr - priv->max_fetched,
+ info);
+ if (status != 0)
+ {
+ (*info->memory_error_func) (status, start, info);
+ longjmp (priv->bailout, 1);
+ }
+ else
+ priv->max_fetched = addr;
+ return 1;
+}
+
+#define Eb OP_E, b_mode
+#define indirEb OP_indirE, b_mode
+#define Gb OP_G, b_mode
+#define Ev OP_E, v_mode
+#define indirEv OP_indirE, v_mode
+#define Ew OP_E, w_mode
+#define Ma OP_E, v_mode
+#define M OP_E, 0
+#define Mp OP_E, 0 /* ? */
+#define Gv OP_G, v_mode
+#define Gw OP_G, w_mode
+#define Rw OP_rm, w_mode
+#define Rd OP_rm, d_mode
+#define Ib OP_I, b_mode
+#define sIb OP_sI, b_mode /* sign extened byte */
+#define Iv OP_I, v_mode
+#define Iw OP_I, w_mode
+#define Jb OP_J, b_mode
+#define Jv OP_J, v_mode
+#if 0
+#define ONE OP_ONE, 0
+#endif
+#define Cd OP_C, d_mode
+#define Dd OP_D, d_mode
+#define Td OP_T, d_mode
+
+#define eAX OP_REG, eAX_reg
+#define eBX OP_REG, eBX_reg
+#define eCX OP_REG, eCX_reg
+#define eDX OP_REG, eDX_reg
+#define eSP OP_REG, eSP_reg
+#define eBP OP_REG, eBP_reg
+#define eSI OP_REG, eSI_reg
+#define eDI OP_REG, eDI_reg
+#define AL OP_REG, al_reg
+#define CL OP_REG, cl_reg
+#define DL OP_REG, dl_reg
+#define BL OP_REG, bl_reg
+#define AH OP_REG, ah_reg
+#define CH OP_REG, ch_reg
+#define DH OP_REG, dh_reg
+#define BH OP_REG, bh_reg
+#define AX OP_REG, ax_reg
+#define DX OP_REG, dx_reg
+#define indirDX OP_REG, indir_dx_reg
+
+#define Sw OP_SEG, w_mode
+#define Ap OP_DIR, lptr
+#define Av OP_DIR, v_mode
+#define Ob OP_OFF, b_mode
+#define Ov OP_OFF, v_mode
+#define Xb OP_DSSI, b_mode
+#define Xv OP_DSSI, v_mode
+#define Yb OP_ESDI, b_mode
+#define Yv OP_ESDI, v_mode
+
+#define es OP_REG, es_reg
+#define ss OP_REG, ss_reg
+#define cs OP_REG, cs_reg
+#define ds OP_REG, ds_reg
+#define fs OP_REG, fs_reg
+#define gs OP_REG, gs_reg
+
+#define MX OP_MMX, 0
+#define EM OP_EM, v_mode
+#define MS OP_MS, b_mode
+
+typedef int (*op_rtn) PARAMS ((int bytemode, int aflag, int dflag));
+
+static int OP_E PARAMS ((int, int, int));
+static int OP_G PARAMS ((int, int, int));
+static int OP_I PARAMS ((int, int, int));
+static int OP_indirE PARAMS ((int, int, int));
+static int OP_sI PARAMS ((int, int, int));
+static int OP_REG PARAMS ((int, int, int));
+static int OP_J PARAMS ((int, int, int));
+static int OP_DIR PARAMS ((int, int, int));
+static int OP_OFF PARAMS ((int, int, int));
+static int OP_ESDI PARAMS ((int, int, int));
+static int OP_DSSI PARAMS ((int, int, int));
+static int OP_SEG PARAMS ((int, int, int));
+static int OP_C PARAMS ((int, int, int));
+static int OP_D PARAMS ((int, int, int));
+static int OP_T PARAMS ((int, int, int));
+static int OP_rm PARAMS ((int, int, int));
+static int OP_ST PARAMS ((int, int, int));
+static int OP_STi PARAMS ((int, int, int));
+#if 0
+static int OP_ONE PARAMS ((int, int, int));
+#endif
+static int OP_MMX PARAMS ((int, int, int));
+static int OP_EM PARAMS ((int, int, int));
+static int OP_MS PARAMS ((int, int, int));
+
+static void append_prefix PARAMS ((void));
+static void set_op PARAMS ((int op));
+static void putop PARAMS ((char *template, int aflag, int dflag));
+static void dofloat PARAMS ((int aflag, int dflag));
+static int get16 PARAMS ((void));
+static int get32 PARAMS ((void));
+static void ckprefix PARAMS ((void));
+
+#define b_mode 1
+#define v_mode 2
+#define w_mode 3
+#define d_mode 4
+
+#define es_reg 100
+#define cs_reg 101
+#define ss_reg 102
+#define ds_reg 103
+#define fs_reg 104
+#define gs_reg 105
+#define eAX_reg 107
+#define eCX_reg 108
+#define eDX_reg 109
+#define eBX_reg 110
+#define eSP_reg 111
+#define eBP_reg 112
+#define eSI_reg 113
+#define eDI_reg 114
+
+#define lptr 115
+
+#define al_reg 116
+#define cl_reg 117
+#define dl_reg 118
+#define bl_reg 119
+#define ah_reg 120
+#define ch_reg 121
+#define dh_reg 122
+#define bh_reg 123
+
+#define ax_reg 124
+#define cx_reg 125
+#define dx_reg 126
+#define bx_reg 127
+#define sp_reg 128
+#define bp_reg 129
+#define si_reg 130
+#define di_reg 131
+
+#define indir_dx_reg 150
+
+#define GRP1b NULL, NULL, 0
+#define GRP1S NULL, NULL, 1
+#define GRP1Ss NULL, NULL, 2
+#define GRP2b NULL, NULL, 3
+#define GRP2S NULL, NULL, 4
+#define GRP2b_one NULL, NULL, 5
+#define GRP2S_one NULL, NULL, 6
+#define GRP2b_cl NULL, NULL, 7
+#define GRP2S_cl NULL, NULL, 8
+#define GRP3b NULL, NULL, 9
+#define GRP3S NULL, NULL, 10
+#define GRP4 NULL, NULL, 11
+#define GRP5 NULL, NULL, 12
+#define GRP6 NULL, NULL, 13
+#define GRP7 NULL, NULL, 14
+#define GRP8 NULL, NULL, 15
+#define GRP9 NULL, NULL, 16
+#define GRP10 NULL, NULL, 17
+#define GRP11 NULL, NULL, 18
+#define GRP12 NULL, NULL, 19
+
+#define FLOATCODE 50
+#define FLOAT NULL, NULL, FLOATCODE
+
+struct dis386 {
+ char *name;
+ op_rtn op1;
+ int bytemode1;
+ op_rtn op2;
+ int bytemode2;
+ op_rtn op3;
+ int bytemode3;
+};
+
+static struct dis386 dis386[] = {
+ /* 00 */
+ { "addb", Eb, Gb },
+ { "addS", Ev, Gv },
+ { "addb", Gb, Eb },
+ { "addS", Gv, Ev },
+ { "addb", AL, Ib },
+ { "addS", eAX, Iv },
+ { "pushS", es },
+ { "popS", es },
+ /* 08 */
+ { "orb", Eb, Gb },
+ { "orS", Ev, Gv },
+ { "orb", Gb, Eb },
+ { "orS", Gv, Ev },
+ { "orb", AL, Ib },
+ { "orS", eAX, Iv },
+ { "pushS", cs },
+ { "(bad)" }, /* 0x0f extended opcode escape */
+ /* 10 */
+ { "adcb", Eb, Gb },
+ { "adcS", Ev, Gv },
+ { "adcb", Gb, Eb },
+ { "adcS", Gv, Ev },
+ { "adcb", AL, Ib },
+ { "adcS", eAX, Iv },
+ { "pushS", ss },
+ { "popS", ss },
+ /* 18 */
+ { "sbbb", Eb, Gb },
+ { "sbbS", Ev, Gv },
+ { "sbbb", Gb, Eb },
+ { "sbbS", Gv, Ev },
+ { "sbbb", AL, Ib },
+ { "sbbS", eAX, Iv },
+ { "pushS", ds },
+ { "popS", ds },
+ /* 20 */
+ { "andb", Eb, Gb },
+ { "andS", Ev, Gv },
+ { "andb", Gb, Eb },
+ { "andS", Gv, Ev },
+ { "andb", AL, Ib },
+ { "andS", eAX, Iv },
+ { "(bad)" }, /* SEG ES prefix */
+ { "daa" },
+ /* 28 */
+ { "subb", Eb, Gb },
+ { "subS", Ev, Gv },
+ { "subb", Gb, Eb },
+ { "subS", Gv, Ev },
+ { "subb", AL, Ib },
+ { "subS", eAX, Iv },
+ { "(bad)" }, /* SEG CS prefix */
+ { "das" },
+ /* 30 */
+ { "xorb", Eb, Gb },
+ { "xorS", Ev, Gv },
+ { "xorb", Gb, Eb },
+ { "xorS", Gv, Ev },
+ { "xorb", AL, Ib },
+ { "xorS", eAX, Iv },
+ { "(bad)" }, /* SEG SS prefix */
+ { "aaa" },
+ /* 38 */
+ { "cmpb", Eb, Gb },
+ { "cmpS", Ev, Gv },
+ { "cmpb", Gb, Eb },
+ { "cmpS", Gv, Ev },
+ { "cmpb", AL, Ib },
+ { "cmpS", eAX, Iv },
+ { "(bad)" }, /* SEG DS prefix */
+ { "aas" },
+ /* 40 */
+ { "incS", eAX },
+ { "incS", eCX },
+ { "incS", eDX },
+ { "incS", eBX },
+ { "incS", eSP },
+ { "incS", eBP },
+ { "incS", eSI },
+ { "incS", eDI },
+ /* 48 */
+ { "decS", eAX },
+ { "decS", eCX },
+ { "decS", eDX },
+ { "decS", eBX },
+ { "decS", eSP },
+ { "decS", eBP },
+ { "decS", eSI },
+ { "decS", eDI },
+ /* 50 */
+ { "pushS", eAX },
+ { "pushS", eCX },
+ { "pushS", eDX },
+ { "pushS", eBX },
+ { "pushS", eSP },
+ { "pushS", eBP },
+ { "pushS", eSI },
+ { "pushS", eDI },
+ /* 58 */
+ { "popS", eAX },
+ { "popS", eCX },
+ { "popS", eDX },
+ { "popS", eBX },
+ { "popS", eSP },
+ { "popS", eBP },
+ { "popS", eSI },
+ { "popS", eDI },
+ /* 60 */
+ { "pusha" },
+ { "popa" },
+ { "boundS", Gv, Ma },
+ { "arpl", Ew, Gw },
+ { "(bad)" }, /* seg fs */
+ { "(bad)" }, /* seg gs */
+ { "(bad)" }, /* op size prefix */
+ { "(bad)" }, /* adr size prefix */
+ /* 68 */
+ { "pushS", Iv }, /* 386 book wrong */
+ { "imulS", Gv, Ev, Iv },
+ { "pushS", sIb }, /* push of byte really pushes 2 or 4 bytes */
+ { "imulS", Gv, Ev, Ib },
+ { "insb", Yb, indirDX },
+ { "insS", Yv, indirDX },
+ { "outsb", indirDX, Xb },
+ { "outsS", indirDX, Xv },
+ /* 70 */
+ { "jo", Jb },
+ { "jno", Jb },
+ { "jb", Jb },
+ { "jae", Jb },
+ { "je", Jb },
+ { "jne", Jb },
+ { "jbe", Jb },
+ { "ja", Jb },
+ /* 78 */
+ { "js", Jb },
+ { "jns", Jb },
+ { "jp", Jb },
+ { "jnp", Jb },
+ { "jl", Jb },
+ { "jnl", Jb },
+ { "jle", Jb },
+ { "jg", Jb },
+ /* 80 */
+ { GRP1b },
+ { GRP1S },
+ { "(bad)" },
+ { GRP1Ss },
+ { "testb", Eb, Gb },
+ { "testS", Ev, Gv },
+ { "xchgb", Eb, Gb },
+ { "xchgS", Ev, Gv },
+ /* 88 */
+ { "movb", Eb, Gb },
+ { "movS", Ev, Gv },
+ { "movb", Gb, Eb },
+ { "movS", Gv, Ev },
+ { "movS", Ev, Sw },
+ { "leaS", Gv, M },
+ { "movS", Sw, Ev },
+ { "popS", Ev },
+ /* 90 */
+ { "nop" },
+ { "xchgS", eCX, eAX },
+ { "xchgS", eDX, eAX },
+ { "xchgS", eBX, eAX },
+ { "xchgS", eSP, eAX },
+ { "xchgS", eBP, eAX },
+ { "xchgS", eSI, eAX },
+ { "xchgS", eDI, eAX },
+ /* 98 */
+ { "cWtS" },
+ { "cStd" },
+ { "lcall", Ap },
+ { "(bad)" }, /* fwait */
+ { "pushf" },
+ { "popf" },
+ { "sahf" },
+ { "lahf" },
+ /* a0 */
+ { "movb", AL, Ob },
+ { "movS", eAX, Ov },
+ { "movb", Ob, AL },
+ { "movS", Ov, eAX },
+ { "movsb", Yb, Xb },
+ { "movsS", Yv, Xv },
+ { "cmpsb", Yb, Xb },
+ { "cmpsS", Yv, Xv },
+ /* a8 */
+ { "testb", AL, Ib },
+ { "testS", eAX, Iv },
+ { "stosb", Yb, AL },
+ { "stosS", Yv, eAX },
+ { "lodsb", AL, Xb },
+ { "lodsS", eAX, Xv },
+ { "scasb", AL, Yb },
+ { "scasS", eAX, Yv },
+ /* b0 */
+ { "movb", AL, Ib },
+ { "movb", CL, Ib },
+ { "movb", DL, Ib },
+ { "movb", BL, Ib },
+ { "movb", AH, Ib },
+ { "movb", CH, Ib },
+ { "movb", DH, Ib },
+ { "movb", BH, Ib },
+ /* b8 */
+ { "movS", eAX, Iv },
+ { "movS", eCX, Iv },
+ { "movS", eDX, Iv },
+ { "movS", eBX, Iv },
+ { "movS", eSP, Iv },
+ { "movS", eBP, Iv },
+ { "movS", eSI, Iv },
+ { "movS", eDI, Iv },
+ /* c0 */
+ { GRP2b },
+ { GRP2S },
+ { "ret", Iw },
+ { "ret" },
+ { "lesS", Gv, Mp },
+ { "ldsS", Gv, Mp },
+ { "movb", Eb, Ib },
+ { "movS", Ev, Iv },
+ /* c8 */
+ { "enter", Iw, Ib },
+ { "leave" },
+ { "lret", Iw },
+ { "lret" },
+ { "int3" },
+ { "int", Ib },
+ { "into" },
+ { "iret" },
+ /* d0 */
+ { GRP2b_one },
+ { GRP2S_one },
+ { GRP2b_cl },
+ { GRP2S_cl },
+ { "aam", Ib },
+ { "aad", Ib },
+ { "(bad)" },
+ { "xlat" },
+ /* d8 */
+ { FLOAT },
+ { FLOAT },
+ { FLOAT },
+ { FLOAT },
+ { FLOAT },
+ { FLOAT },
+ { FLOAT },
+ { FLOAT },
+ /* e0 */
+ { "loopne", Jb },
+ { "loope", Jb },
+ { "loop", Jb },
+ { "jCcxz", Jb },
+ { "inb", AL, Ib },
+ { "inS", eAX, Ib },
+ { "outb", Ib, AL },
+ { "outS", Ib, eAX },
+ /* e8 */
+ { "call", Av },
+ { "jmp", Jv },
+ { "ljmp", Ap },
+ { "jmp", Jb },
+ { "inb", AL, indirDX },
+ { "inS", eAX, indirDX },
+ { "outb", indirDX, AL },
+ { "outS", indirDX, eAX },
+ /* f0 */
+ { "(bad)" }, /* lock prefix */
+ { "(bad)" },
+ { "(bad)" }, /* repne */
+ { "(bad)" }, /* repz */
+ { "hlt" },
+ { "cmc" },
+ { GRP3b },
+ { GRP3S },
+ /* f8 */
+ { "clc" },
+ { "stc" },
+ { "cli" },
+ { "sti" },
+ { "cld" },
+ { "std" },
+ { GRP4 },
+ { GRP5 },
+};
+
+static struct dis386 dis386_twobyte[] = {
+ /* 00 */
+ { GRP6 },
+ { GRP7 },
+ { "larS", Gv, Ew },
+ { "lslS", Gv, Ew },
+ { "(bad)" },
+ { "(bad)" },
+ { "clts" },
+ { "(bad)" },
+ /* 08 */
+ { "invd" },
+ { "wbinvd" },
+ { "(bad)" }, { "ud2a" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 10 */
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 18 */
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 20 */
+ /* these are all backward in appendix A of the intel book */
+ { "movl", Rd, Cd },
+ { "movl", Rd, Dd },
+ { "movl", Cd, Rd },
+ { "movl", Dd, Rd },
+ { "movl", Rd, Td },
+ { "(bad)" },
+ { "movl", Td, Rd },
+ { "(bad)" },
+ /* 28 */
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 30 */
+ { "wrmsr" }, { "rdtsc" }, { "rdmsr" }, { "rdpmc" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 38 */
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 40 */
+ { "cmovo", Gv,Ev }, { "cmovno", Gv,Ev }, { "cmovb", Gv,Ev }, { "cmovae", Gv,Ev },
+ { "cmove", Gv,Ev }, { "cmovne", Gv,Ev }, { "cmovbe", Gv,Ev }, { "cmova", Gv,Ev },
+ /* 48 */
+ { "cmovs", Gv,Ev }, { "cmovns", Gv,Ev }, { "cmovp", Gv,Ev }, { "cmovnp", Gv,Ev },
+ { "cmovl", Gv,Ev }, { "cmovge", Gv,Ev }, { "cmovle", Gv,Ev }, { "cmovg", Gv,Ev },
+ /* 50 */
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 58 */
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ /* 60 */
+ { "punpcklbw", MX, EM },
+ { "punpcklwd", MX, EM },
+ { "punpckldq", MX, EM },
+ { "packsswb", MX, EM },
+ { "pcmpgtb", MX, EM },
+ { "pcmpgtw", MX, EM },
+ { "pcmpgtd", MX, EM },
+ { "packuswb", MX, EM },
+ /* 68 */
+ { "punpckhbw", MX, EM },
+ { "punpckhwd", MX, EM },
+ { "punpckhdq", MX, EM },
+ { "packssdw", MX, EM },
+ { "(bad)" }, { "(bad)" },
+ { "movd", MX, Ev },
+ { "movq", MX, EM },
+ /* 70 */
+ { "(bad)" },
+ { GRP10 },
+ { GRP11 },
+ { GRP12 },
+ { "pcmpeqb", MX, EM },
+ { "pcmpeqw", MX, EM },
+ { "pcmpeqd", MX, EM },
+ { "emms" },
+ /* 78 */
+ { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
+ { "(bad)" }, { "(bad)" },
+ { "movd", Ev, MX },
+ { "movq", EM, MX },
+ /* 80 */
+ { "jo", Jv },
+ { "jno", Jv },
+ { "jb", Jv },
+ { "jae", Jv },
+ { "je", Jv },
+ { "jne", Jv },
+ { "jbe", Jv },
+ { "ja", Jv },
+ /* 88 */
+ { "js", Jv },
+ { "jns", Jv },
+ { "jp", Jv },
+ { "jnp", Jv },
+ { "jl", Jv },
+ { "jge", Jv },
+ { "jle", Jv },
+ { "jg", Jv },
+ /* 90 */
+ { "seto", Eb },
+ { "setno", Eb },
+ { "setb", Eb },
+ { "setae", Eb },
+ { "sete", Eb },
+ { "setne", Eb },
+ { "setbe", Eb },
+ { "seta", Eb },
+ /* 98 */
+ { "sets", Eb },
+ { "setns", Eb },
+ { "setp", Eb },
+ { "setnp", Eb },
+ { "setl", Eb },
+ { "setge", Eb },
+ { "setle", Eb },
+ { "setg", Eb },
+ /* a0 */
+ { "pushS", fs },
+ { "popS", fs },
+ { "cpuid" },
+ { "btS", Ev, Gv },
+ { "shldS", Ev, Gv, Ib },
+ { "shldS", Ev, Gv, CL },
+ { "(bad)" },
+ { "(bad)" },
+ /* a8 */
+ { "pushS", gs },
+ { "popS", gs },
+ { "rsm" },
+ { "btsS", Ev, Gv },
+ { "shrdS", Ev, Gv, Ib },
+ { "shrdS", Ev, Gv, CL },
+ { "(bad)" },
+ { "imulS", Gv, Ev },
+ /* b0 */
+ { "cmpxchgb", Eb, Gb },
+ { "cmpxchgS", Ev, Gv },
+ { "lssS", Gv, Mp }, /* 386 lists only Mp */
+ { "btrS", Ev, Gv },
+ { "lfsS", Gv, Mp }, /* 386 lists only Mp */
+ { "lgsS", Gv, Mp }, /* 386 lists only Mp */
+ { "movzbS", Gv, Eb },
+ { "movzwS", Gv, Ew },
+ /* b8 */
+ { "ud2b" },
+ { "(bad)" },
+ { GRP8 },
+ { "btcS", Ev, Gv },
+ { "bsfS", Gv, Ev },
+ { "bsrS", Gv, Ev },
+ { "movsbS", Gv, Eb },
+ { "movswS", Gv, Ew },
+ /* c0 */
+ { "xaddb", Eb, Gb },
+ { "xaddS", Ev, Gv },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { GRP9 },
+ /* c8 */
+ { "bswap", eAX },
+ { "bswap", eCX },
+ { "bswap", eDX },
+ { "bswap", eBX },
+ { "bswap", eSP },
+ { "bswap", eBP },
+ { "bswap", eSI },
+ { "bswap", eDI },
+ /* d0 */
+ { "(bad)" },
+ { "psrlw", MX, EM },
+ { "psrld", MX, EM },
+ { "psrlq", MX, EM },
+ { "(bad)" },
+ { "pmullw", MX, EM },
+ { "(bad)" }, { "(bad)" },
+ /* d8 */
+ { "psubusb", MX, EM },
+ { "psubusw", MX, EM },
+ { "(bad)" },
+ { "pand", MX, EM },
+ { "paddusb", MX, EM },
+ { "paddusw", MX, EM },
+ { "(bad)" },
+ { "pandn", MX, EM },
+ /* e0 */
+ { "(bad)" },
+ { "psraw", MX, EM },
+ { "psrad", MX, EM },
+ { "(bad)" },
+ { "(bad)" },
+ { "pmulhw", MX, EM },
+ { "(bad)" }, { "(bad)" },
+ /* e8 */
+ { "psubsb", MX, EM },
+ { "psubsw", MX, EM },
+ { "(bad)" },
+ { "por", MX, EM },
+ { "paddsb", MX, EM },
+ { "paddsw", MX, EM },
+ { "(bad)" },
+ { "pxor", MX, EM },
+ /* f0 */
+ { "(bad)" },
+ { "psllw", MX, EM },
+ { "pslld", MX, EM },
+ { "psllq", MX, EM },
+ { "(bad)" },
+ { "pmaddwd", MX, EM },
+ { "(bad)" }, { "(bad)" },
+ /* f8 */
+ { "psubb", MX, EM },
+ { "psubw", MX, EM },
+ { "psubd", MX, EM },
+ { "(bad)" },
+ { "paddb", MX, EM },
+ { "paddw", MX, EM },
+ { "paddd", MX, EM },
+ { "(bad)" }
+};
+
+static const unsigned char onebyte_has_modrm[256] = {
+ 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
+ 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
+ 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
+ 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,1,1,0,0,0,0,0,1,0,1,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 1,1,0,0,1,1,1,1,0,0,0,0,0,0,0,0,
+ 1,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,1,1,0,0,0,0,0,0,1,1
+};
+
+static const unsigned char twobyte_has_modrm[256] = {
+ /* 00 */ 1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */
+ /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */
+ /* 20 */ 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, /* 2f */
+ /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */
+ /* 40 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4f */
+ /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */
+ /* 60 */ 1,1,1,1,1,1,1,1,1,1,1,1,0,0,1,1, /* 6f */
+ /* 70 */ 0,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1, /* 7f */
+ /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */
+ /* 90 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 9f */
+ /* a0 */ 0,0,0,1,1,1,1,1,0,0,0,1,1,1,1,1, /* af */
+ /* b0 */ 1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1, /* bf */
+ /* c0 */ 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, /* cf */
+ /* d0 */ 0,1,1,1,0,1,0,0,1,1,0,1,1,1,0,1, /* df */
+ /* e0 */ 0,1,1,0,0,1,0,0,1,1,0,1,1,1,0,1, /* ef */
+ /* f0 */ 0,1,1,1,0,1,0,0,1,1,1,0,1,1,1,0 /* ff */
+};
+
+static char obuf[100];
+static char *obufp;
+static char scratchbuf[100];
+static unsigned char *start_codep;
+static unsigned char *codep;
+static disassemble_info *the_info;
+static int mod;
+static int rm;
+static int reg;
+static void oappend PARAMS ((char *s));
+
+static char *names32[]={
+ "%eax","%ecx","%edx","%ebx", "%esp","%ebp","%esi","%edi",
+};
+static char *names16[] = {
+ "%ax","%cx","%dx","%bx","%sp","%bp","%si","%di",
+};
+static char *names8[] = {
+ "%al","%cl","%dl","%bl","%ah","%ch","%dh","%bh",
+};
+static char *names_seg[] = {
+ "%es","%cs","%ss","%ds","%fs","%gs","%?","%?",
+};
+static char *index16[] = {
+ "bx+si","bx+di","bp+si","bp+di","si","di","bp","bx"
+};
+
+static struct dis386 grps[][8] = {
+ /* GRP1b */
+ {
+ { "addb", Eb, Ib },
+ { "orb", Eb, Ib },
+ { "adcb", Eb, Ib },
+ { "sbbb", Eb, Ib },
+ { "andb", Eb, Ib },
+ { "subb", Eb, Ib },
+ { "xorb", Eb, Ib },
+ { "cmpb", Eb, Ib }
+ },
+ /* GRP1S */
+ {
+ { "addS", Ev, Iv },
+ { "orS", Ev, Iv },
+ { "adcS", Ev, Iv },
+ { "sbbS", Ev, Iv },
+ { "andS", Ev, Iv },
+ { "subS", Ev, Iv },
+ { "xorS", Ev, Iv },
+ { "cmpS", Ev, Iv }
+ },
+ /* GRP1Ss */
+ {
+ { "addS", Ev, sIb },
+ { "orS", Ev, sIb },
+ { "adcS", Ev, sIb },
+ { "sbbS", Ev, sIb },
+ { "andS", Ev, sIb },
+ { "subS", Ev, sIb },
+ { "xorS", Ev, sIb },
+ { "cmpS", Ev, sIb }
+ },
+ /* GRP2b */
+ {
+ { "rolb", Eb, Ib },
+ { "rorb", Eb, Ib },
+ { "rclb", Eb, Ib },
+ { "rcrb", Eb, Ib },
+ { "shlb", Eb, Ib },
+ { "shrb", Eb, Ib },
+ { "(bad)" },
+ { "sarb", Eb, Ib },
+ },
+ /* GRP2S */
+ {
+ { "rolS", Ev, Ib },
+ { "rorS", Ev, Ib },
+ { "rclS", Ev, Ib },
+ { "rcrS", Ev, Ib },
+ { "shlS", Ev, Ib },
+ { "shrS", Ev, Ib },
+ { "(bad)" },
+ { "sarS", Ev, Ib },
+ },
+ /* GRP2b_one */
+ {
+ { "rolb", Eb },
+ { "rorb", Eb },
+ { "rclb", Eb },
+ { "rcrb", Eb },
+ { "shlb", Eb },
+ { "shrb", Eb },
+ { "(bad)" },
+ { "sarb", Eb },
+ },
+ /* GRP2S_one */
+ {
+ { "rolS", Ev },
+ { "rorS", Ev },
+ { "rclS", Ev },
+ { "rcrS", Ev },
+ { "shlS", Ev },
+ { "shrS", Ev },
+ { "(bad)" },
+ { "sarS", Ev },
+ },
+ /* GRP2b_cl */
+ {
+ { "rolb", Eb, CL },
+ { "rorb", Eb, CL },
+ { "rclb", Eb, CL },
+ { "rcrb", Eb, CL },
+ { "shlb", Eb, CL },
+ { "shrb", Eb, CL },
+ { "(bad)" },
+ { "sarb", Eb, CL },
+ },
+ /* GRP2S_cl */
+ {
+ { "rolS", Ev, CL },
+ { "rorS", Ev, CL },
+ { "rclS", Ev, CL },
+ { "rcrS", Ev, CL },
+ { "shlS", Ev, CL },
+ { "shrS", Ev, CL },
+ { "(bad)" },
+ { "sarS", Ev, CL }
+ },
+ /* GRP3b */
+ {
+ { "testb", Eb, Ib },
+ { "(bad)", Eb },
+ { "notb", Eb },
+ { "negb", Eb },
+ { "mulb", AL, Eb },
+ { "imulb", AL, Eb },
+ { "divb", AL, Eb },
+ { "idivb", AL, Eb }
+ },
+ /* GRP3S */
+ {
+ { "testS", Ev, Iv },
+ { "(bad)" },
+ { "notS", Ev },
+ { "negS", Ev },
+ { "mulS", eAX, Ev },
+ { "imulS", eAX, Ev },
+ { "divS", eAX, Ev },
+ { "idivS", eAX, Ev },
+ },
+ /* GRP4 */
+ {
+ { "incb", Eb },
+ { "decb", Eb },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ },
+ /* GRP5 */
+ {
+ { "incS", Ev },
+ { "decS", Ev },
+ { "call", indirEv },
+ { "lcall", indirEv },
+ { "jmp", indirEv },
+ { "ljmp", indirEv },
+ { "pushS", Ev },
+ { "(bad)" },
+ },
+ /* GRP6 */
+ {
+ { "sldt", Ew },
+ { "str", Ew },
+ { "lldt", Ew },
+ { "ltr", Ew },
+ { "verr", Ew },
+ { "verw", Ew },
+ { "(bad)" },
+ { "(bad)" }
+ },
+ /* GRP7 */
+ {
+ { "sgdt", Ew },
+ { "sidt", Ew },
+ { "lgdt", Ew },
+ { "lidt", Ew },
+ { "smsw", Ew },
+ { "(bad)" },
+ { "lmsw", Ew },
+ { "invlpg", Ew },
+ },
+ /* GRP8 */
+ {
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "btS", Ev, Ib },
+ { "btsS", Ev, Ib },
+ { "btrS", Ev, Ib },
+ { "btcS", Ev, Ib },
+ },
+ /* GRP9 */
+ {
+ { "(bad)" },
+ { "cmpxchg8b", Ev },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ },
+ /* GRP10 */
+ {
+ { "(bad)" },
+ { "(bad)" },
+ { "psrlw", MS, Ib },
+ { "(bad)" },
+ { "psraw", MS, Ib },
+ { "(bad)" },
+ { "psllw", MS, Ib },
+ { "(bad)" },
+ },
+ /* GRP11 */
+ {
+ { "(bad)" },
+ { "(bad)" },
+ { "psrld", MS, Ib },
+ { "(bad)" },
+ { "psrad", MS, Ib },
+ { "(bad)" },
+ { "pslld", MS, Ib },
+ { "(bad)" },
+ },
+ /* GRP12 */
+ {
+ { "(bad)" },
+ { "(bad)" },
+ { "psrlq", MS, Ib },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "psllq", MS, Ib },
+ { "(bad)" },
+ }
+};
+
+#define PREFIX_REPZ 1
+#define PREFIX_REPNZ 2
+#define PREFIX_LOCK 4
+#define PREFIX_CS 8
+#define PREFIX_SS 0x10
+#define PREFIX_DS 0x20
+#define PREFIX_ES 0x40
+#define PREFIX_FS 0x80
+#define PREFIX_GS 0x100
+#define PREFIX_DATA 0x200
+#define PREFIX_ADR 0x400
+#define PREFIX_FWAIT 0x800
+
+static int prefixes;
+
+static void
+ckprefix ()
+{
+ prefixes = 0;
+ while (1)
+ {
+ FETCH_DATA (the_info, codep + 1);
+ switch (*codep)
+ {
+ case 0xf3:
+ prefixes |= PREFIX_REPZ;
+ break;
+ case 0xf2:
+ prefixes |= PREFIX_REPNZ;
+ break;
+ case 0xf0:
+ prefixes |= PREFIX_LOCK;
+ break;
+ case 0x2e:
+ prefixes |= PREFIX_CS;
+ break;
+ case 0x36:
+ prefixes |= PREFIX_SS;
+ break;
+ case 0x3e:
+ prefixes |= PREFIX_DS;
+ break;
+ case 0x26:
+ prefixes |= PREFIX_ES;
+ break;
+ case 0x64:
+ prefixes |= PREFIX_FS;
+ break;
+ case 0x65:
+ prefixes |= PREFIX_GS;
+ break;
+ case 0x66:
+ prefixes |= PREFIX_DATA;
+ break;
+ case 0x67:
+ prefixes |= PREFIX_ADR;
+ break;
+ case 0x9b:
+ prefixes |= PREFIX_FWAIT;
+ break;
+ default:
+ return;
+ }
+ codep++;
+ }
+}
+
+static char op1out[100], op2out[100], op3out[100];
+static int op_address[3], op_ad, op_index[3];
+static int start_pc;
+
+\f
+/*
+ * On the 386's of 1988, the maximum length of an instruction is 15 bytes.
+ * (see topic "Redundant prefixes" in the "Differences from 8086"
+ * section of the "Virtual 8086 Mode" chapter.)
+ * 'pc' should be the address of this instruction, it will
+ * be used to print the target address if this is a relative jump or call
+ * The function returns the length of this instruction in bytes.
+ */
+
+int print_insn_x86 PARAMS ((bfd_vma pc, disassemble_info *info, int aflag,
+ int dflag));
+int
+print_insn_i386 (pc, info)
+ bfd_vma pc;
+ disassemble_info *info;
+{
+ if (info->mach == bfd_mach_i386_i386)
+ return print_insn_x86 (pc, info, 1, 1);
+ else if (info->mach == bfd_mach_i386_i8086)
+ return print_insn_x86 (pc, info, 0, 0);
+ else
+ abort ();
+}
+
+int
+print_insn_x86 (pc, info, aflag, dflag)
+ bfd_vma pc;
+ disassemble_info *info;
+ int aflag;
+ int dflag;
+{
+ struct dis386 *dp;
+ int i;
+ int enter_instruction;
+ char *first, *second, *third;
+ int needcomma;
+ unsigned char need_modrm;
+
+ struct dis_private priv;
+ bfd_byte *inbuf = priv.the_buffer;
+
+ /* The output looks better if we put 5 bytes on a line, since that
+ puts long word instructions on a single line. */
+ info->bytes_per_line = 5;
+
+ info->private_data = (PTR) &priv;
+ priv.max_fetched = priv.the_buffer;
+ priv.insn_start = pc;
+ if (setjmp (priv.bailout) != 0)
+ /* Error return. */
+ return -1;
+
+ obuf[0] = 0;
+ op1out[0] = 0;
+ op2out[0] = 0;
+ op3out[0] = 0;
+
+ op_index[0] = op_index[1] = op_index[2] = -1;
+
+ the_info = info;
+ start_pc = pc;
+ start_codep = inbuf;
+ codep = inbuf;
+
+ ckprefix ();
+
+ FETCH_DATA (info, codep + 1);
+ if (*codep == 0xc8)
+ enter_instruction = 1;
+ else
+ enter_instruction = 0;
+
+ obufp = obuf;
+
+ if (prefixes & PREFIX_REPZ)
+ oappend ("repz ");
+ if (prefixes & PREFIX_REPNZ)
+ oappend ("repnz ");
+ if (prefixes & PREFIX_LOCK)
+ oappend ("lock ");
+
+ if ((prefixes & PREFIX_FWAIT)
+ && ((*codep < 0xd8) || (*codep > 0xdf)))
+ {
+ /* fwait not followed by floating point instruction */
+ (*info->fprintf_func) (info->stream, "fwait");
+ return (1);
+ }
+
+ if (prefixes & PREFIX_DATA)
+ dflag ^= 1;
+
+ if (prefixes & PREFIX_ADR)
+ {
+ aflag ^= 1;
+ if (aflag)
+ oappend ("addr32 ");
+ else
+ oappend ("addr16 ");
+ }
+
+ if (*codep == 0x0f)
+ {
+ FETCH_DATA (info, codep + 2);
+ dp = &dis386_twobyte[*++codep];
+ need_modrm = twobyte_has_modrm[*codep];
+ }
+ else
+ {
+ dp = &dis386[*codep];
+ need_modrm = onebyte_has_modrm[*codep];
+ }
+ codep++;
+
+ if (need_modrm)
+ {
+ FETCH_DATA (info, codep + 1);
+ mod = (*codep >> 6) & 3;
+ reg = (*codep >> 3) & 7;
+ rm = *codep & 7;
+ }
+
+ if (dp->name == NULL && dp->bytemode1 == FLOATCODE)
+ {
+ dofloat (aflag, dflag);
+ }
+ else
+ {
+ if (dp->name == NULL)
+ dp = &grps[dp->bytemode1][reg];
+
+ putop (dp->name, aflag, dflag);
+
+ obufp = op1out;
+ op_ad = 2;
+ if (dp->op1)
+ (*dp->op1)(dp->bytemode1, aflag, dflag);
+
+ obufp = op2out;
+ op_ad = 1;
+ if (dp->op2)
+ (*dp->op2)(dp->bytemode2, aflag, dflag);
+
+ obufp = op3out;
+ op_ad = 0;
+ if (dp->op3)
+ (*dp->op3)(dp->bytemode3, aflag, dflag);
+ }
+
+ obufp = obuf + strlen (obuf);
+ for (i = strlen (obuf); i < 6; i++)
+ oappend (" ");
+ oappend (" ");
+ (*info->fprintf_func) (info->stream, "%s", obuf);
+
+ /* enter instruction is printed with operands in the
+ * same order as the intel book; everything else
+ * is printed in reverse order
+ */
+ if (enter_instruction)
+ {
+ first = op1out;
+ second = op2out;
+ third = op3out;
+ op_ad = op_index[0];
+ op_index[0] = op_index[2];
+ op_index[2] = op_ad;
+ }
+ else
+ {
+ first = op3out;
+ second = op2out;
+ third = op1out;
+ }
+ needcomma = 0;
+ if (*first)
+ {
+ if (op_index[0] != -1)
+ (*info->print_address_func) (op_address[op_index[0]], info);
+ else
+ (*info->fprintf_func) (info->stream, "%s", first);
+ needcomma = 1;
+ }
+ if (*second)
+ {
+ if (needcomma)
+ (*info->fprintf_func) (info->stream, ",");
+ if (op_index[1] != -1)
+ (*info->print_address_func) (op_address[op_index[1]], info);
+ else
+ (*info->fprintf_func) (info->stream, "%s", second);
+ needcomma = 1;
+ }
+ if (*third)
+ {
+ if (needcomma)
+ (*info->fprintf_func) (info->stream, ",");
+ if (op_index[2] != -1)
+ (*info->print_address_func) (op_address[op_index[2]], info);
+ else
+ (*info->fprintf_func) (info->stream, "%s", third);
+ }
+ return (codep - inbuf);
+}
+
+static char *float_mem[] = {
+ /* d8 */
+ "fadds",
+ "fmuls",
+ "fcoms",
+ "fcomps",
+ "fsubs",
+ "fsubrs",
+ "fdivs",
+ "fdivrs",
+ /* d9 */
+ "flds",
+ "(bad)",
+ "fsts",
+ "fstps",
+ "fldenv",
+ "fldcw",
+ "fNstenv",
+ "fNstcw",
+ /* da */
+ "fiaddl",
+ "fimull",
+ "ficoml",
+ "ficompl",
+ "fisubl",
+ "fisubrl",
+ "fidivl",
+ "fidivrl",
+ /* db */
+ "fildl",
+ "(bad)",
+ "fistl",
+ "fistpl",
+ "(bad)",
+ "fldt",
+ "(bad)",
+ "fstpt",
+ /* dc */
+ "faddl",
+ "fmull",
+ "fcoml",
+ "fcompl",
+ "fsubl",
+ "fsubrl",
+ "fdivl",
+ "fdivrl",
+ /* dd */
+ "fldl",
+ "(bad)",
+ "fstl",
+ "fstpl",
+ "frstor",
+ "(bad)",
+ "fNsave",
+ "fNstsw",
+ /* de */
+ "fiadd",
+ "fimul",
+ "ficom",
+ "ficomp",
+ "fisub",
+ "fisubr",
+ "fidiv",
+ "fidivr",
+ /* df */
+ "fild",
+ "(bad)",
+ "fist",
+ "fistp",
+ "fbld",
+ "fildll",
+ "fbstp",
+ "fistpll",
+};
+
+#define ST OP_ST, 0
+#define STi OP_STi, 0
+
+#define FGRPd9_2 NULL, NULL, 0
+#define FGRPd9_4 NULL, NULL, 1
+#define FGRPd9_5 NULL, NULL, 2
+#define FGRPd9_6 NULL, NULL, 3
+#define FGRPd9_7 NULL, NULL, 4
+#define FGRPda_5 NULL, NULL, 5
+#define FGRPdb_4 NULL, NULL, 6
+#define FGRPde_3 NULL, NULL, 7
+#define FGRPdf_4 NULL, NULL, 8
+
+static struct dis386 float_reg[][8] = {
+ /* d8 */
+ {
+ { "fadd", ST, STi },
+ { "fmul", ST, STi },
+ { "fcom", STi },
+ { "fcomp", STi },
+ { "fsub", ST, STi },
+ { "fsubr", ST, STi },
+ { "fdiv", ST, STi },
+ { "fdivr", ST, STi },
+ },
+ /* d9 */
+ {
+ { "fld", STi },
+ { "fxch", STi },
+ { FGRPd9_2 },
+ { "(bad)" },
+ { FGRPd9_4 },
+ { FGRPd9_5 },
+ { FGRPd9_6 },
+ { FGRPd9_7 },
+ },
+ /* da */
+ {
+ { "fcmovb", ST, STi },
+ { "fcmove", ST, STi },
+ { "fcmovbe",ST, STi },
+ { "fcmovu", ST, STi },
+ { "(bad)" },
+ { FGRPda_5 },
+ { "(bad)" },
+ { "(bad)" },
+ },
+ /* db */
+ {
+ { "fcmovnb",ST, STi },
+ { "fcmovne",ST, STi },
+ { "fcmovnbe",ST, STi },
+ { "fcmovnu",ST, STi },
+ { FGRPdb_4 },
+ { "fucomi", ST, STi },
+ { "fcomi", ST, STi },
+ { "(bad)" },
+ },
+ /* dc */
+ {
+ { "fadd", STi, ST },
+ { "fmul", STi, ST },
+ { "(bad)" },
+ { "(bad)" },
+ { "fsub", STi, ST },
+ { "fsubr", STi, ST },
+ { "fdiv", STi, ST },
+ { "fdivr", STi, ST },
+ },
+ /* dd */
+ {
+ { "ffree", STi },
+ { "(bad)" },
+ { "fst", STi },
+ { "fstp", STi },
+ { "fucom", STi },
+ { "fucomp", STi },
+ { "(bad)" },
+ { "(bad)" },
+ },
+ /* de */
+ {
+ { "faddp", STi, ST },
+ { "fmulp", STi, ST },
+ { "(bad)" },
+ { FGRPde_3 },
+ { "fsubp", STi, ST },
+ { "fsubrp", STi, ST },
+ { "fdivp", STi, ST },
+ { "fdivrp", STi, ST },
+ },
+ /* df */
+ {
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { "(bad)" },
+ { FGRPdf_4 },
+ { "fucomip",ST, STi },
+ { "fcomip", ST, STi },
+ { "(bad)" },
+ },
+};
+
+
+static char *fgrps[][8] = {
+ /* d9_2 0 */
+ {
+ "fnop","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
+ },
+
+ /* d9_4 1 */
+ {
+ "fchs","fabs","(bad)","(bad)","ftst","fxam","(bad)","(bad)",
+ },
+
+ /* d9_5 2 */
+ {
+ "fld1","fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","(bad)",
+ },
+
+ /* d9_6 3 */
+ {
+ "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp","fincstp",
+ },
+
+ /* d9_7 4 */
+ {
+ "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos",
+ },
+
+ /* da_5 5 */
+ {
+ "(bad)","fucompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
+ },
+
+ /* db_4 6 */
+ {
+ "feni(287 only)","fdisi(287 only)","fNclex","fNinit",
+ "fNsetpm(287 only)","(bad)","(bad)","(bad)",
+ },
+
+ /* de_3 7 */
+ {
+ "(bad)","fcompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
+ },
+
+ /* df_4 8 */
+ {
+ "fNstsw","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
+ },
+};
+
+static void
+dofloat (aflag, dflag)
+ int aflag;
+ int dflag;
+{
+ struct dis386 *dp;
+ unsigned char floatop;
+
+ floatop = codep[-1];
+
+ if (mod != 3)
+ {
+ putop (float_mem[(floatop - 0xd8) * 8 + reg], aflag, dflag);
+ obufp = op1out;
+ OP_E (v_mode, aflag, dflag);
+ return;
+ }
+ codep++;
+
+ dp = &float_reg[floatop - 0xd8][reg];
+ if (dp->name == NULL)
+ {
+ putop (fgrps[dp->bytemode1][rm], aflag, dflag);
+ /* instruction fnstsw is only one with strange arg */
+ if (floatop == 0xdf
+ && FETCH_DATA (the_info, codep + 1)
+ && *codep == 0xe0)
+ strcpy (op1out, "%eax");
+ }
+ else
+ {
+ putop (dp->name, aflag, dflag);
+ obufp = op1out;
+ if (dp->op1)
+ (*dp->op1)(dp->bytemode1, aflag, dflag);
+ obufp = op2out;
+ if (dp->op2)
+ (*dp->op2)(dp->bytemode2, aflag, dflag);
+ }
+}
+
+/* ARGSUSED */
+static int
+OP_ST (ignore, aflag, dflag)
+ int ignore;
+ int aflag;
+ int dflag;
+{
+ oappend ("%st");
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+OP_STi (ignore, aflag, dflag)
+ int ignore;
+ int aflag;
+ int dflag;
+{
+ sprintf (scratchbuf, "%%st(%d)", rm);
+ oappend (scratchbuf);
+ return (0);
+}
+
+
+/* capital letters in template are macros */
+static void
+putop (template, aflag, dflag)
+ char *template;
+ int aflag;
+ int dflag;
+{
+ char *p;
+
+ for (p = template; *p; p++)
+ {
+ switch (*p)
+ {
+ default:
+ *obufp++ = *p;
+ break;
+ case 'C': /* For jcxz/jecxz */
+ if (aflag)
+ *obufp++ = 'e';
+ break;
+ case 'N':
+ if ((prefixes & PREFIX_FWAIT) == 0)
+ *obufp++ = 'n';
+ break;
+ case 'S':
+ /* operand size flag */
+ if (dflag)
+ *obufp++ = 'l';
+ else
+ *obufp++ = 'w';
+ break;
+ case 'W':
+ /* operand size flag for cwtl, cbtw */
+ if (dflag)
+ *obufp++ = 'w';
+ else
+ *obufp++ = 'b';
+ break;
+ }
+ }
+ *obufp = 0;
+}
+
+static void
+oappend (s)
+ char *s;
+{
+ strcpy (obufp, s);
+ obufp += strlen (s);
+ *obufp = 0;
+}
+
+static void
+append_prefix ()
+{
+ if (prefixes & PREFIX_CS)
+ oappend ("%cs:");
+ if (prefixes & PREFIX_DS)
+ oappend ("%ds:");
+ if (prefixes & PREFIX_SS)
+ oappend ("%ss:");
+ if (prefixes & PREFIX_ES)
+ oappend ("%es:");
+ if (prefixes & PREFIX_FS)
+ oappend ("%fs:");
+ if (prefixes & PREFIX_GS)
+ oappend ("%gs:");
+}
+
+static int
+OP_indirE (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ oappend ("*");
+ return OP_E (bytemode, aflag, dflag);
+}
+
+static int
+OP_E (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ int disp;
+
+ /* skip mod/rm byte */
+ codep++;
+
+ if (mod == 3)
+ {
+ switch (bytemode)
+ {
+ case b_mode:
+ oappend (names8[rm]);
+ break;
+ case w_mode:
+ oappend (names16[rm]);
+ break;
+ case v_mode:
+ if (dflag)
+ oappend (names32[rm]);
+ else
+ oappend (names16[rm]);
+ break;
+ default:
+ oappend ("<bad dis table>");
+ break;
+ }
+ return 0;
+ }
+
+ disp = 0;
+ append_prefix ();
+
+ if (aflag) /* 32 bit address mode */
+ {
+ int havesib;
+ int havebase;
+ int base;
+ int index = 0;
+ int scale = 0;
+
+ havesib = 0;
+ havebase = 1;
+ base = rm;
+
+ if (base == 4)
+ {
+ havesib = 1;
+ FETCH_DATA (the_info, codep + 1);
+ scale = (*codep >> 6) & 3;
+ index = (*codep >> 3) & 7;
+ base = *codep & 7;
+ codep++;
+ }
+
+ switch (mod)
+ {
+ case 0:
+ if (base == 5)
+ {
+ havebase = 0;
+ disp = get32 ();
+ }
+ break;
+ case 1:
+ FETCH_DATA (the_info, codep + 1);
+ disp = *codep++;
+ if ((disp & 0x80) != 0)
+ disp -= 0x100;
+ break;
+ case 2:
+ disp = get32 ();
+ break;
+ }
+
+ if (mod != 0 || base == 5)
+ {
+ sprintf (scratchbuf, "0x%x", disp);
+ oappend (scratchbuf);
+ }
+
+ if (havebase || (havesib && (index != 4 || scale != 0)))
+ {
+ oappend ("(");
+ if (havebase)
+ oappend (names32[base]);
+ if (havesib)
+ {
+ if (index != 4)
+ {
+ sprintf (scratchbuf, ",%s", names32[index]);
+ oappend (scratchbuf);
+ }
+ sprintf (scratchbuf, ",%d", 1 << scale);
+ oappend (scratchbuf);
+ }
+ oappend (")");
+ }
+ }
+ else
+ { /* 16 bit address mode */
+ switch (mod)
+ {
+ case 0:
+ if (rm == 6)
+ {
+ disp = get16 ();
+ if ((disp & 0x8000) != 0)
+ disp -= 0x10000;
+ }
+ break;
+ case 1:
+ FETCH_DATA (the_info, codep + 1);
+ disp = *codep++;
+ if ((disp & 0x80) != 0)
+ disp -= 0x100;
+ break;
+ case 2:
+ disp = get16 ();
+ if ((disp & 0x8000) != 0)
+ disp -= 0x10000;
+ break;
+ }
+
+ if (mod != 0 || rm == 6)
+ {
+ sprintf (scratchbuf, "0x%x", disp);
+ oappend (scratchbuf);
+ }
+
+ if (mod != 0 || rm != 6)
+ {
+ oappend ("(");
+ oappend (index16[rm]);
+ oappend (")");
+ }
+ }
+ return 0;
+}
+
+static int
+OP_G (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ switch (bytemode)
+ {
+ case b_mode:
+ oappend (names8[reg]);
+ break;
+ case w_mode:
+ oappend (names16[reg]);
+ break;
+ case d_mode:
+ oappend (names32[reg]);
+ break;
+ case v_mode:
+ if (dflag)
+ oappend (names32[reg]);
+ else
+ oappend (names16[reg]);
+ break;
+ default:
+ oappend ("<internal disassembler error>");
+ break;
+ }
+ return (0);
+}
+
+static int
+get32 ()
+{
+ int x = 0;
+
+ FETCH_DATA (the_info, codep + 4);
+ x = *codep++ & 0xff;
+ x |= (*codep++ & 0xff) << 8;
+ x |= (*codep++ & 0xff) << 16;
+ x |= (*codep++ & 0xff) << 24;
+ return (x);
+}
+
+static int
+get16 ()
+{
+ int x = 0;
+
+ FETCH_DATA (the_info, codep + 2);
+ x = *codep++ & 0xff;
+ x |= (*codep++ & 0xff) << 8;
+ return (x);
+}
+
+static void
+set_op (op)
+ int op;
+{
+ op_index[op_ad] = op_ad;
+ op_address[op_ad] = op;
+}
+
+static int
+OP_REG (code, aflag, dflag)
+ int code;
+ int aflag;
+ int dflag;
+{
+ char *s;
+
+ switch (code)
+ {
+ case indir_dx_reg: s = "(%dx)"; break;
+ case ax_reg: case cx_reg: case dx_reg: case bx_reg:
+ case sp_reg: case bp_reg: case si_reg: case di_reg:
+ s = names16[code - ax_reg];
+ break;
+ case es_reg: case ss_reg: case cs_reg:
+ case ds_reg: case fs_reg: case gs_reg:
+ s = names_seg[code - es_reg];
+ break;
+ case al_reg: case ah_reg: case cl_reg: case ch_reg:
+ case dl_reg: case dh_reg: case bl_reg: case bh_reg:
+ s = names8[code - al_reg];
+ break;
+ case eAX_reg: case eCX_reg: case eDX_reg: case eBX_reg:
+ case eSP_reg: case eBP_reg: case eSI_reg: case eDI_reg:
+ if (dflag)
+ s = names32[code - eAX_reg];
+ else
+ s = names16[code - eAX_reg];
+ break;
+ default:
+ s = "<internal disassembler error>";
+ break;
+ }
+ oappend (s);
+ return (0);
+}
+
+static int
+OP_I (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ int op;
+
+ switch (bytemode)
+ {
+ case b_mode:
+ FETCH_DATA (the_info, codep + 1);
+ op = *codep++ & 0xff;
+ break;
+ case v_mode:
+ if (dflag)
+ op = get32 ();
+ else
+ op = get16 ();
+ break;
+ case w_mode:
+ op = get16 ();
+ break;
+ default:
+ oappend ("<internal disassembler error>");
+ return (0);
+ }
+ sprintf (scratchbuf, "$0x%x", op);
+ oappend (scratchbuf);
+ return (0);
+}
+
+static int
+OP_sI (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ int op;
+
+ switch (bytemode)
+ {
+ case b_mode:
+ FETCH_DATA (the_info, codep + 1);
+ op = *codep++;
+ if ((op & 0x80) != 0)
+ op -= 0x100;
+ break;
+ case v_mode:
+ if (dflag)
+ op = get32 ();
+ else
+ {
+ op = get16();
+ if ((op & 0x8000) != 0)
+ op -= 0x10000;
+ }
+ break;
+ case w_mode:
+ op = get16 ();
+ if ((op & 0x8000) != 0)
+ op -= 0x10000;
+ break;
+ default:
+ oappend ("<internal disassembler error>");
+ return (0);
+ }
+ sprintf (scratchbuf, "$0x%x", op);
+ oappend (scratchbuf);
+ return (0);
+}
+
+static int
+OP_J (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ int disp;
+ int mask = -1;
+
+ switch (bytemode)
+ {
+ case b_mode:
+ FETCH_DATA (the_info, codep + 1);
+ disp = *codep++;
+ if ((disp & 0x80) != 0)
+ disp -= 0x100;
+ break;
+ case v_mode:
+ if (dflag)
+ disp = get32 ();
+ else
+ {
+ disp = get16 ();
+ if ((disp & 0x8000) != 0)
+ disp -= 0x10000;
+ /* for some reason, a data16 prefix on a jump instruction
+ means that the pc is masked to 16 bits after the
+ displacement is added! */
+ mask = 0xffff;
+ }
+ break;
+ default:
+ oappend ("<internal disassembler error>");
+ return (0);
+ }
+ disp = (start_pc + codep - start_codep + disp) & mask;
+ set_op (disp);
+ sprintf (scratchbuf, "0x%x", disp);
+ oappend (scratchbuf);
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+OP_SEG (dummy, aflag, dflag)
+ int dummy;
+ int aflag;
+ int dflag;
+{
+ static char *sreg[] = {
+ "%es","%cs","%ss","%ds","%fs","%gs","%?","%?",
+ };
+
+ oappend (sreg[reg]);
+ return (0);
+}
+
+static int
+OP_DIR (size, aflag, dflag)
+ int size;
+ int aflag;
+ int dflag;
+{
+ int seg, offset;
+
+ switch (size)
+ {
+ case lptr:
+ if (aflag)
+ {
+ offset = get32 ();
+ seg = get16 ();
+ }
+ else
+ {
+ offset = get16 ();
+ seg = get16 ();
+ }
+ sprintf (scratchbuf, "0x%x,0x%x", seg, offset);
+ oappend (scratchbuf);
+ break;
+ case v_mode:
+ if (aflag)
+ offset = get32 ();
+ else
+ {
+ offset = get16 ();
+ if ((offset & 0x8000) != 0)
+ offset -= 0x10000;
+ }
+
+ offset = start_pc + codep - start_codep + offset;
+ set_op (offset);
+ sprintf (scratchbuf, "0x%x", offset);
+ oappend (scratchbuf);
+ break;
+ default:
+ oappend ("<internal disassembler error>");
+ break;
+ }
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+OP_OFF (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ int off;
+
+ append_prefix ();
+
+ if (aflag)
+ off = get32 ();
+ else
+ off = get16 ();
+
+ sprintf (scratchbuf, "0x%x", off);
+ oappend (scratchbuf);
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+OP_ESDI (dummy, aflag, dflag)
+ int dummy;
+ int aflag;
+ int dflag;
+{
+ oappend ("%es:(");
+ oappend (aflag ? "%edi" : "%di");
+ oappend (")");
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+OP_DSSI (dummy, aflag, dflag)
+ int dummy;
+ int aflag;
+ int dflag;
+{
+ if ((prefixes
+ & (PREFIX_CS
+ | PREFIX_DS
+ | PREFIX_SS
+ | PREFIX_ES
+ | PREFIX_FS
+ | PREFIX_GS)) == 0)
+ prefixes |= PREFIX_DS;
+ append_prefix ();
+ oappend ("(");
+ oappend (aflag ? "%esi" : "%si");
+ oappend (")");
+ return (0);
+}
+
+#if 0
+/* Not used. */
+
+/* ARGSUSED */
+static int
+OP_ONE (dummy, aflag, dflag)
+ int dummy;
+ int aflag;
+ int dflag;
+{
+ oappend ("1");
+ return (0);
+}
+
+#endif
+
+/* ARGSUSED */
+static int
+OP_C (dummy, aflag, dflag)
+ int dummy;
+ int aflag;
+ int dflag;
+{
+ codep++; /* skip mod/rm */
+ sprintf (scratchbuf, "%%cr%d", reg);
+ oappend (scratchbuf);
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+OP_D (dummy, aflag, dflag)
+ int dummy;
+ int aflag;
+ int dflag;
+{
+ codep++; /* skip mod/rm */
+ sprintf (scratchbuf, "%%db%d", reg);
+ oappend (scratchbuf);
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+OP_T (dummy, aflag, dflag)
+ int dummy;
+ int aflag;
+ int dflag;
+{
+ codep++; /* skip mod/rm */
+ sprintf (scratchbuf, "%%tr%d", reg);
+ oappend (scratchbuf);
+ return (0);
+}
+
+static int
+OP_rm (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ switch (bytemode)
+ {
+ case d_mode:
+ oappend (names32[rm]);
+ break;
+ case w_mode:
+ oappend (names16[rm]);
+ break;
+ }
+ return (0);
+}
+
+static int
+OP_MMX (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ sprintf (scratchbuf, "%%mm%d", reg);
+ oappend (scratchbuf);
+ return 0;
+}
+
+static int
+OP_EM (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ if (mod != 3)
+ return OP_E (bytemode, aflag, dflag);
+
+ codep++;
+ sprintf (scratchbuf, "%%mm%d", rm);
+ oappend (scratchbuf);
+ return 0;
+}
+
+static int
+OP_MS (bytemode, aflag, dflag)
+ int bytemode;
+ int aflag;
+ int dflag;
+{
+ ++codep;
+ sprintf (scratchbuf, "%%mm%d", rm);
+ oappend (scratchbuf);
+ return 0;
+}
#define offsetof(type, field) ((size_t) &((type *)0)->field)
#endif
-static uint8_t *gen_code_ptr;
+static uint16_t *gen_opc_ptr;
+static uint32_t *gen_opparam_ptr;
int __op_param1, __op_param2, __op_param3;
extern FILE *logfile;
OP_SAR = 7,
};
+enum {
+#define DEF(s) INDEX_op_ ## s,
+#include "opc-i386.h"
+#undef DEF
+ NB_OPS,
+};
+
#include "op-i386.h"
/* operand size */
if (mod == 3)
goto illegal_op;
gen_op_ld_T1_A0[ot]();
- op_addl_A0_im(1 << (ot - OT_WORD + 1));
+ gen_op_addl_A0_im(1 << (ot - OT_WORD + 1));
/* load the segment first to handle exceptions properly */
gen_op_lduw_T0_A0();
gen_movl_seg_T0(s, op);
return -1;
}
+#define CC_OSZAPC (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C)
+#define CC_OSZAP (CC_O | CC_S | CC_Z | CC_A | CC_P)
+
+/* flags read by an operation */
+static uint16_t opc_read_flags[NB_OPS] = {
+ [INDEX_op_aas] = CC_A,
+ [INDEX_op_aaa] = CC_A,
+ [INDEX_op_das] = CC_A | CC_C,
+ [INDEX_op_daa] = CC_A | CC_C,
+
+ [INDEX_op_adcb_T0_T1_cc] = CC_C,
+ [INDEX_op_adcw_T0_T1_cc] = CC_C,
+ [INDEX_op_adcl_T0_T1_cc] = CC_C,
+ [INDEX_op_sbbb_T0_T1_cc] = CC_C,
+ [INDEX_op_sbbw_T0_T1_cc] = CC_C,
+ [INDEX_op_sbbl_T0_T1_cc] = CC_C,
+
+ [INDEX_op_into] = CC_O,
+
+ [INDEX_op_jo_cc] = CC_O,
+ [INDEX_op_jb_cc] = CC_C,
+ [INDEX_op_jz_cc] = CC_Z,
+ [INDEX_op_jbe_cc] = CC_Z | CC_C,
+ [INDEX_op_js_cc] = CC_S,
+ [INDEX_op_jp_cc] = CC_P,
+ [INDEX_op_jl_cc] = CC_O | CC_S,
+ [INDEX_op_jle_cc] = CC_O | CC_S | CC_Z,
+
+ [INDEX_op_jb_subb] = CC_C,
+ [INDEX_op_jb_subw] = CC_C,
+ [INDEX_op_jb_subl] = CC_C,
+
+ [INDEX_op_jz_subb] = CC_Z,
+ [INDEX_op_jz_subw] = CC_Z,
+ [INDEX_op_jz_subl] = CC_Z,
+
+ [INDEX_op_jbe_subb] = CC_Z | CC_C,
+ [INDEX_op_jbe_subw] = CC_Z | CC_C,
+ [INDEX_op_jbe_subl] = CC_Z | CC_C,
+
+ [INDEX_op_js_subb] = CC_S,
+ [INDEX_op_js_subw] = CC_S,
+ [INDEX_op_js_subl] = CC_S,
+
+ [INDEX_op_jl_subb] = CC_O | CC_S,
+ [INDEX_op_jl_subw] = CC_O | CC_S,
+ [INDEX_op_jl_subl] = CC_O | CC_S,
+
+ [INDEX_op_jle_subb] = CC_O | CC_S | CC_Z,
+ [INDEX_op_jle_subw] = CC_O | CC_S | CC_Z,
+ [INDEX_op_jle_subl] = CC_O | CC_S | CC_Z,
+
+ [INDEX_op_loopnzw] = CC_Z,
+ [INDEX_op_loopnzl] = CC_Z,
+ [INDEX_op_loopzw] = CC_Z,
+ [INDEX_op_loopzl] = CC_Z,
+
+ [INDEX_op_seto_T0_cc] = CC_O,
+ [INDEX_op_setb_T0_cc] = CC_C,
+ [INDEX_op_setz_T0_cc] = CC_Z,
+ [INDEX_op_setbe_T0_cc] = CC_Z | CC_C,
+ [INDEX_op_sets_T0_cc] = CC_S,
+ [INDEX_op_setp_T0_cc] = CC_P,
+ [INDEX_op_setl_T0_cc] = CC_O | CC_S,
+ [INDEX_op_setle_T0_cc] = CC_O | CC_S | CC_Z,
+
+ [INDEX_op_setb_T0_subb] = CC_C,
+ [INDEX_op_setb_T0_subw] = CC_C,
+ [INDEX_op_setb_T0_subl] = CC_C,
+
+ [INDEX_op_setz_T0_subb] = CC_Z,
+ [INDEX_op_setz_T0_subw] = CC_Z,
+ [INDEX_op_setz_T0_subl] = CC_Z,
+
+ [INDEX_op_setbe_T0_subb] = CC_Z | CC_C,
+ [INDEX_op_setbe_T0_subw] = CC_Z | CC_C,
+ [INDEX_op_setbe_T0_subl] = CC_Z | CC_C,
+
+ [INDEX_op_sets_T0_subb] = CC_S,
+ [INDEX_op_sets_T0_subw] = CC_S,
+ [INDEX_op_sets_T0_subl] = CC_S,
+
+ [INDEX_op_setl_T0_subb] = CC_O | CC_S,
+ [INDEX_op_setl_T0_subw] = CC_O | CC_S,
+ [INDEX_op_setl_T0_subl] = CC_O | CC_S,
+
+ [INDEX_op_setle_T0_subb] = CC_O | CC_S | CC_Z,
+ [INDEX_op_setle_T0_subw] = CC_O | CC_S | CC_Z,
+ [INDEX_op_setle_T0_subl] = CC_O | CC_S | CC_Z,
+
+ [INDEX_op_movl_T0_eflags] = CC_OSZAPC,
+ [INDEX_op_cmc] = CC_C,
+ [INDEX_op_salc] = CC_C,
+
+ [INDEX_op_rclb_T0_T1_cc] = CC_C,
+ [INDEX_op_rclw_T0_T1_cc] = CC_C,
+ [INDEX_op_rcll_T0_T1_cc] = CC_C,
+ [INDEX_op_rcrb_T0_T1_cc] = CC_C,
+ [INDEX_op_rcrw_T0_T1_cc] = CC_C,
+ [INDEX_op_rcrl_T0_T1_cc] = CC_C,
+};
+
+/* flags written by an operation */
+static uint16_t opc_write_flags[NB_OPS] = {
+ [INDEX_op_addl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_orl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_adcb_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_adcw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_adcl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_sbbb_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_sbbw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_sbbl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_andl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_subl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_xorl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_cmpl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_negl_T0_cc] = CC_OSZAPC,
+ [INDEX_op_incl_T0_cc] = CC_OSZAP,
+ [INDEX_op_decl_T0_cc] = CC_OSZAP,
+ [INDEX_op_testl_T0_T1_cc] = CC_OSZAPC,
+
+ [INDEX_op_mulb_AL_T0] = CC_OSZAPC,
+ [INDEX_op_imulb_AL_T0] = CC_OSZAPC,
+ [INDEX_op_mulw_AX_T0] = CC_OSZAPC,
+ [INDEX_op_imulw_AX_T0] = CC_OSZAPC,
+ [INDEX_op_mull_EAX_T0] = CC_OSZAPC,
+ [INDEX_op_imull_EAX_T0] = CC_OSZAPC,
+ [INDEX_op_imulw_T0_T1] = CC_OSZAPC,
+ [INDEX_op_imull_T0_T1] = CC_OSZAPC,
+
+ /* bcd */
+ [INDEX_op_aam] = CC_OSZAPC,
+ [INDEX_op_aad] = CC_OSZAPC,
+ [INDEX_op_aas] = CC_OSZAPC,
+ [INDEX_op_aaa] = CC_OSZAPC,
+ [INDEX_op_das] = CC_OSZAPC,
+ [INDEX_op_daa] = CC_OSZAPC,
+
+ [INDEX_op_movb_eflags_T0] = CC_S | CC_Z | CC_A | CC_P | CC_C,
+ [INDEX_op_movl_eflags_T0] = CC_OSZAPC,
+ [INDEX_op_clc] = CC_C,
+ [INDEX_op_stc] = CC_C,
+ [INDEX_op_cmc] = CC_C,
+
+ [INDEX_op_rolb_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rolw_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_roll_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rorb_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rorw_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rorl_T0_T1_cc] = CC_O | CC_C,
+
+ [INDEX_op_rclb_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rclw_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rcll_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rcrb_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rcrw_T0_T1_cc] = CC_O | CC_C,
+ [INDEX_op_rcrl_T0_T1_cc] = CC_O | CC_C,
+
+ [INDEX_op_shlb_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_shlw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_shll_T0_T1_cc] = CC_OSZAPC,
+
+ [INDEX_op_shrb_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_shrw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_shrl_T0_T1_cc] = CC_OSZAPC,
+
+ [INDEX_op_sarb_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_sarw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_sarl_T0_T1_cc] = CC_OSZAPC,
+
+ [INDEX_op_shldw_T0_T1_ECX_cc] = CC_OSZAPC,
+ [INDEX_op_shldl_T0_T1_ECX_cc] = CC_OSZAPC,
+ [INDEX_op_shldw_T0_T1_im_cc] = CC_OSZAPC,
+ [INDEX_op_shldl_T0_T1_im_cc] = CC_OSZAPC,
+
+ [INDEX_op_shrdw_T0_T1_ECX_cc] = CC_OSZAPC,
+ [INDEX_op_shrdl_T0_T1_ECX_cc] = CC_OSZAPC,
+ [INDEX_op_shrdw_T0_T1_im_cc] = CC_OSZAPC,
+ [INDEX_op_shrdl_T0_T1_im_cc] = CC_OSZAPC,
+
+ [INDEX_op_btw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_btl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_btsw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_btsl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_btrw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_btrl_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_btcw_T0_T1_cc] = CC_OSZAPC,
+ [INDEX_op_btcl_T0_T1_cc] = CC_OSZAPC,
+
+ [INDEX_op_bsfw_T0_cc] = CC_OSZAPC,
+ [INDEX_op_bsfl_T0_cc] = CC_OSZAPC,
+ [INDEX_op_bsrw_T0_cc] = CC_OSZAPC,
+ [INDEX_op_bsrl_T0_cc] = CC_OSZAPC,
+
+ [INDEX_op_scasb] = CC_OSZAPC,
+ [INDEX_op_scasw] = CC_OSZAPC,
+ [INDEX_op_scasl] = CC_OSZAPC,
+ [INDEX_op_repz_scasb] = CC_OSZAPC,
+ [INDEX_op_repz_scasw] = CC_OSZAPC,
+ [INDEX_op_repz_scasl] = CC_OSZAPC,
+ [INDEX_op_repnz_scasb] = CC_OSZAPC,
+ [INDEX_op_repnz_scasw] = CC_OSZAPC,
+ [INDEX_op_repnz_scasl] = CC_OSZAPC,
+
+ [INDEX_op_cmpsb] = CC_OSZAPC,
+ [INDEX_op_cmpsw] = CC_OSZAPC,
+ [INDEX_op_cmpsl] = CC_OSZAPC,
+ [INDEX_op_repz_cmpsb] = CC_OSZAPC,
+ [INDEX_op_repz_cmpsw] = CC_OSZAPC,
+ [INDEX_op_repz_cmpsl] = CC_OSZAPC,
+ [INDEX_op_repnz_cmpsb] = CC_OSZAPC,
+ [INDEX_op_repnz_cmpsw] = CC_OSZAPC,
+ [INDEX_op_repnz_cmpsl] = CC_OSZAPC,
+
+ [INDEX_op_cmpxchgw_T0_T1_EAX_cc] = CC_OSZAPC,
+ [INDEX_op_cmpxchgl_T0_T1_EAX_cc] = CC_OSZAPC,
+};
+
+/* simpler form of an operation if no flags need to be generated */
+static uint16_t opc_simpler[NB_OPS] = {
+ [INDEX_op_addl_T0_T1_cc] = INDEX_op_addl_T0_T1,
+ [INDEX_op_orl_T0_T1_cc] = INDEX_op_orl_T0_T1,
+ [INDEX_op_andl_T0_T1_cc] = INDEX_op_andl_T0_T1,
+ [INDEX_op_subl_T0_T1_cc] = INDEX_op_subl_T0_T1,
+ [INDEX_op_xorl_T0_T1_cc] = INDEX_op_xorl_T0_T1,
+ [INDEX_op_negl_T0_cc] = INDEX_op_negl_T0,
+ [INDEX_op_incl_T0_cc] = INDEX_op_incl_T0,
+ [INDEX_op_decl_T0_cc] = INDEX_op_decl_T0,
+
+ [INDEX_op_rolb_T0_T1_cc] = INDEX_op_rolb_T0_T1,
+ [INDEX_op_rolw_T0_T1_cc] = INDEX_op_rolw_T0_T1,
+ [INDEX_op_roll_T0_T1_cc] = INDEX_op_roll_T0_T1,
+
+ [INDEX_op_rorb_T0_T1_cc] = INDEX_op_rorb_T0_T1,
+ [INDEX_op_rorw_T0_T1_cc] = INDEX_op_rorw_T0_T1,
+ [INDEX_op_rorl_T0_T1_cc] = INDEX_op_rorl_T0_T1,
+
+ [INDEX_op_shlb_T0_T1_cc] = INDEX_op_shlb_T0_T1,
+ [INDEX_op_shlw_T0_T1_cc] = INDEX_op_shlw_T0_T1,
+ [INDEX_op_shll_T0_T1_cc] = INDEX_op_shll_T0_T1,
+
+ [INDEX_op_shrb_T0_T1_cc] = INDEX_op_shrb_T0_T1,
+ [INDEX_op_shrw_T0_T1_cc] = INDEX_op_shrw_T0_T1,
+ [INDEX_op_shrl_T0_T1_cc] = INDEX_op_shrl_T0_T1,
+
+ [INDEX_op_sarb_T0_T1_cc] = INDEX_op_sarb_T0_T1,
+ [INDEX_op_sarw_T0_T1_cc] = INDEX_op_sarw_T0_T1,
+ [INDEX_op_sarl_T0_T1_cc] = INDEX_op_sarl_T0_T1,
+};
+
+static void optimize_flags_init(void)
+{
+ int i;
+ /* put default values in arrays */
+ for(i = 0; i < NB_OPS; i++) {
+ if (opc_simpler[i] == 0)
+ opc_simpler[i] = i;
+ }
+}
+
+/* CPU flags computation optimization: we move backward thru the
+ generated code to see which flags are needed. The operation is
+ modified if suitable */
+static void optimize_flags(uint16_t *opc_buf, int opc_buf_len)
+{
+ uint16_t *opc_ptr;
+ int live_flags, write_flags, op;
+
+ opc_ptr = opc_buf + opc_buf_len;
+ /* live_flags contains the flags needed by the next instructions
+ in the code. At the end of the bloc, we consider that all the
+ flags are live. */
+ live_flags = CC_OSZAPC;
+ while (opc_ptr > opc_buf) {
+ op = *--opc_ptr;
+ /* if none of the flags written by the instruction is used,
+ then we can try to find a simpler instruction */
+ write_flags = opc_write_flags[op];
+ if ((live_flags & write_flags) == 0) {
+ *opc_ptr = opc_simpler[op];
+ }
+ /* compute the live flags before the instruction */
+ live_flags &= ~write_flags;
+ live_flags |= opc_read_flags[op];
+ }
+}
+
+
+#ifdef DEBUG_DISAS
+static const char *op_str[] = {
+#define DEF(s) #s,
+#include "opc-i386.h"
+#undef DEF
+};
+
+static void dump_ops(const uint16_t *opc_buf)
+{
+ const uint16_t *opc_ptr;
+ int c;
+ opc_ptr = opc_buf;
+ for(;;) {
+ c = *opc_ptr++;
+ fprintf(logfile, "0x%04x: %s\n", opc_ptr - opc_buf - 1, op_str[c]);
+ if (c == INDEX_op_end)
+ break;
+ }
+}
+
+#endif
+
+/* XXX: make this buffer thread safe */
+/* XXX: make safe guess about sizes */
+#define MAX_OP_PER_INSTR 32
+#define OPC_BUF_SIZE 512
+#define OPC_MAX_SIZE (OPC_BUF_SIZE - MAX_OP_PER_INSTR)
+
+#define OPPARAM_BUF_SIZE (OPC_BUF_SIZE * 3)
+
+static uint16_t gen_opc_buf[OPC_BUF_SIZE];
+static uint32_t gen_opparam_buf[OPPARAM_BUF_SIZE];
+
/* return the next pc */
int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size,
int *gen_code_size_ptr, uint8_t *pc_start,
int flags)
{
DisasContext dc1, *dc = &dc1;
- uint8_t *gen_code_end, *pc_ptr;
+ uint8_t *pc_ptr;
+ uint16_t *gen_opc_end;
long ret;
#ifdef DEBUG_DISAS
struct disassemble_info disasm_info;
#endif
+
+ /* generate intermediate code */
+
dc->code32 = (flags >> GEN_FLAG_CODE32_SHIFT) & 1;
dc->addseg = (flags >> GEN_FLAG_ADDSEG_SHIFT) & 1;
dc->f_st = (flags >> GEN_FLAG_ST_SHIFT) & 7;
dc->cc_op = CC_OP_DYNAMIC;
- gen_code_ptr = gen_code_buf;
- gen_code_end = gen_code_buf + max_code_size - 4096;
- gen_start();
+
+ gen_opc_ptr = gen_opc_buf;
+ gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
+ gen_opparam_ptr = gen_opparam_buf;
dc->is_jmp = 0;
pc_ptr = pc_start;
abort();
}
pc_ptr = (void *)ret;
- } while (!dc->is_jmp && gen_code_ptr < gen_code_end);
+ } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end);
/* we must store the eflags state if it is not already done */
if (dc->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(dc->cc_op);
/* we add an additionnal jmp to update the simulated PC */
gen_op_jmp_im(ret);
}
- gen_end();
- *gen_code_size_ptr = gen_code_ptr - gen_code_buf;
+ *gen_opc_ptr = INDEX_op_end;
+ /* optimize flag computations */
#ifdef DEBUG_DISAS
if (loglevel) {
uint8_t *pc;
#else
disasm_info.endian = BFD_ENDIAN_LITTLE;
#endif
+ fprintf(logfile, "----------------\n");
fprintf(logfile, "IN:\n");
disasm_info.buffer = pc_start;
disasm_info.buffer_vma = (unsigned long)pc_start;
}
fprintf(logfile, "\n");
+ fprintf(logfile, "OP:\n");
+ dump_ops(gen_opc_buf);
+ fprintf(logfile, "\n");
+ }
+#endif
+
+ /* optimize flag computations */
+ optimize_flags(gen_opc_buf, gen_opc_ptr - gen_opc_buf);
+
+#ifdef DEBUG_DISAS
+ if (loglevel) {
+ fprintf(logfile, "AFTER FLAGS OPT:\n");
+ dump_ops(gen_opc_buf);
+ fprintf(logfile, "\n");
+ }
+#endif
+
+ /* generate machine code */
+ *gen_code_size_ptr = dyngen_code(gen_code_buf, gen_opc_buf, gen_opparam_buf);
+
+#ifdef DEBUG_DISAS
+ if (loglevel) {
+ uint8_t *pc;
+ int count;
+
pc = gen_code_buf;
disasm_info.buffer = pc;
disasm_info.buffer_vma = (unsigned long)pc;
disasm_info.buffer_length = *gen_code_size_ptr;
fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr);
- while (pc < gen_code_ptr) {
+ while (pc < gen_code_buf + *gen_code_size_ptr) {
fprintf(logfile, "0x%08lx: ", (long)pc);
count = print_insn_i386((unsigned long)pc, &disasm_info);
fprintf(logfile, "\n");
{
CPUX86State *env;
int i;
+ static int inited;
cpu_x86_tblocks_init();
/* flags setup */
env->cc_op = CC_OP_EFLAGS;
env->df = 1;
+
+ /* init various static tables */
+ if (!inited) {
+ inited = 1;
+ optimize_flags_init();
+ }
return env;
}
projects / qemu / commitdiff