/**

  * $Id$

  *

  * Wrapper around i386-dis to supply the same behaviour as the other

  * disassembly functions.

  *

  * Copyright (c) 2005 Nathan Keynes.

  *

  * 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.

  */

 #include <stdarg.h>

 #include <string.h>

 #include "x86dasm/x86dasm.h"

 #include "x86dasm/bfd.h"

 #include "x86dasm/dis-asm.h"

 #include "sh4/sh4.h"

 #include "sh4/sh4trans.h"

 const struct cpu_desc_struct x86_cpu_desc = 

     { "x86", (disasm_func_t)x86_disasm_instruction, NULL, mem_has_page, 

       NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 1, 

       NULL, 0, NULL, 0, 0,  

       &sh4r.pc };

 static int x86_disasm_output( void *data, const char *format, ... );

 static void x86_print_address( bfd_vma memaddr, struct disassemble_info *info );

 static struct disassemble_info x86_disasm_info;

 static x86_symbol *x86_symtab;

 static int x86_num_symbols = 0;   

 void xlat_disasm_block( FILE *out, void *block )

 {

     uint32_t buflen = xlat_get_code_size(block);

     x86_set_symtab( NULL, 0 );

     x86_disasm_block( out, block, buflen );

 }

 void x86_disasm_block(FILE *out, void *start, uint32_t len)

 {

     uintptr_t start_addr = (uintptr_t)start;

     uintptr_t pc;

     x86_disasm_init( start, start_addr, len );

     for( pc = start_addr; pc < start_addr + len;  ) {

 	char buf[256];

 	char op[256];

 	uintptr_t pc2 = x86_disasm_instruction( pc, buf, sizeof(buf), op );

 	fprintf( out, "%08X: %-20s %s\n", (unsigned int)pc, op, buf );

 	pc = pc2;

     }

 }

 void x86_disasm_init(unsigned char *buf, uintptr_t vma, int buflen)

 {

     init_disassemble_info( &x86_disasm_info, NULL, x86_disasm_output );

     x86_disasm_info.arch = bfd_arch_i386;

 #if SIZEOF_VOID_P == 8

     x86_disasm_info.mach =  bfd_mach_x86_64_intel_syntax;

 #else

     x86_disasm_info.mach = bfd_mach_i386_i386_intel_syntax;

 #endif

     x86_disasm_info.endian = BFD_ENDIAN_LITTLE;

     x86_disasm_info.buffer = buf;

     x86_disasm_info.buffer_vma = vma;

     x86_disasm_info.buffer_length = buflen;

     x86_disasm_info.print_address_func = x86_print_address;

 }

 void x86_set_symtab( x86_symbol *symtab, int num_symbols )

 {

     x86_symtab = symtab;

     x86_num_symbols = num_symbols;

 }

 static const char *x86_find_symbol( bfd_vma memaddr, struct disassemble_info *info )

 {

     int i;

     for( i=0; i<x86_num_symbols; i++ ) {

 	if( x86_symtab[i].ptr == (void *)(uintptr_t)memaddr ) {

 	    return x86_symtab[i].name;

 	}

     }

     return NULL;

 }

 static void x86_print_address( bfd_vma memaddr, struct disassemble_info *info )

 {

     const char *sym = x86_find_symbol(memaddr, info);

     info->fprintf_func( info->stream, "%08X", memaddr );

     if( sym != NULL ) {

 	info->fprintf_func( info->stream, " <%s>", sym );

     }

 }

 void x86_print_symbolic_operand( char *buf, int hex, unsigned int disp )

 {

     const char *sym = x86_find_symbol(disp, NULL);

     if( sym != NULL ) {

         snprintf( buf, 50, "<%s>", sym );

     } else if( hex ) {

         sprintf( buf, "0x%x", disp );

     } else {

         sprintf( buf, "%d", (int)disp );

     }

 }

 uintptr_t x86_disasm_instruction( uintptr_t pc, char *buf, int len, char *opcode )

 {

     int count, i;

     x86_disasm_info.stream = buf;

     buf[0] = 0;

     count = print_insn_i386_att( pc, &x86_disasm_info );

     if( count != 0 ) {

 	unsigned char tmp[count];

 	x86_disasm_info.read_memory_func( pc, tmp, count, &x86_disasm_info );

 	for( i=0; i<count; i++ ) {

 	    sprintf( opcode, "%02X ", ((unsigned int)tmp[i])&0xFF );

 	    opcode += 3;

 	}

 	*(opcode-1) = '\0';

     }

     return pc + count;

 }

 int x86_disasm_output( void *data, const char *format, ... )

 {

     char *p = (char *)data;

     va_list ap;

     int n;

     p += strlen(p);

     va_start( ap, format );

     n = vsprintf( p, format, ap );

     va_end( ap );

     return n;

 }