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lxdream.org :: lxdream/src/test/testsh4x86.c
lxdream 0.9.1
released Jun 29
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filename src/test/testsh4x86.c
changeset 929:fd8cb0c82f5f
prev925:7cbcc51db63d
next930:07e5b11419db
author nkeynes
date Sat Dec 20 03:01:40 2008 +0000 (10 years ago)
branchlxdream-mem
permissions -rw-r--r--
last change First pass experiment using cached decoding.
file annotate diff log raw
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/**
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 * $Id$
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 *
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 * Test cases for the SH4 => x86 translator core. Takes as
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 * input a binary SH4 object (and VMA), generates the
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 * corresponding x86 code, and outputs the disassembly.
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 *
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 * Copyright (c) 2005 Nathan Keynes.
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 */
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#include <stdio.h>
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#include <stdarg.h>
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#include <getopt.h>
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#include <sys/stat.h>
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#include "x86dasm/x86dasm.h"
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#include "sh4/sh4trans.h"
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#include "sh4/sh4core.h"
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#include "sh4/sh4mmio.h"
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struct dreamcast_module sh4_module;
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struct mmio_region mmio_region_MMU;
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struct mmio_region mmio_region_PMM;
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struct breakpoint_struct sh4_breakpoints[MAX_BREAKPOINTS];
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int sh4_breakpoint_count = 0;
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#define MAX_INS_SIZE 32
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char *option_list = "s:o:d:h";
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struct option longopts[1] = { { NULL, 0, 0, 0 } };
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char *input_file = NULL;
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char *diff_file = NULL;
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char *output_file = NULL;
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gboolean sh4_starting;
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uint32_t start_addr = 0x8C010000;
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uint32_t sh4_cpu_period = 5;
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sh4ptr_t sh4_main_ram;
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FILE *in;
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char *inbuf;
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struct x86_symbol local_symbols[] = {
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    { "sh4r+128", ((char *)&sh4r)+128 },
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    { "sh4_cpu_period", &sh4_cpu_period },
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    { "mmu_vma_to_phys_read", mmu_vma_to_phys_read },
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    { "mmu_vma_to_phys_write", mmu_vma_to_phys_write },
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    { "sh4_write_fpscr", sh4_write_fpscr },
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    { "sh4_write_sr", sh4_write_sr },
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    { "sh4_read_sr", sh4_read_sr },
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    { "sh4_sleep", sh4_sleep },
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    { "sh4_fsca", sh4_fsca },
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    { "sh4_ftrv", sh4_ftrv },
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    { "sh4_switch_fr_banks", sh4_switch_fr_banks },
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    { "sh4_execute_instruction", sh4_execute_instruction },
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    { "signsat48", signsat48 },
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    { "sh4_read_byte", sh4_read_byte },
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    { "sh4_read_word", sh4_read_word },
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    { "sh4_read_long", sh4_read_long },
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    { "sh4_write_byte", sh4_write_byte },
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    { "sh4_write_word", sh4_write_word },
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    { "sh4_write_long", sh4_write_long },
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    { "xlat_get_code_by_vma", xlat_get_code_by_vma },
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    { "xlat_get_code", xlat_get_code }
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};
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int32_t FASTCALL sh4_read_byte( uint32_t addr ) 
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{
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    return *(uint8_t *)(inbuf+(addr-start_addr));
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}
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int32_t FASTCALL sh4_read_word( uint32_t addr ) 
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{
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    return *(uint16_t *)(inbuf+(addr-start_addr));
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}
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int32_t FASTCALL sh4_read_long( uint32_t addr ) 
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{
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    return *(uint32_t *)(inbuf+(addr-start_addr));
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}
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mem_region_fn_t FASTCALL sh7750_decode_address( sh4addr_t address )
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{
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    return NULL;
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}
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void FASTCALL sh7750_decode_address_copy( sh4addr_t address, mem_region_fn_t out )
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{
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}
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// Stubs
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gboolean sh4_execute_instruction( ) { return TRUE; }
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void sh4_accept_interrupt() {}
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void sh4_set_breakpoint( uint32_t pc, breakpoint_type_t type ) { }
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gboolean sh4_clear_breakpoint( uint32_t pc, breakpoint_type_t type ) { return TRUE; }
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gboolean dreamcast_is_running() { return FALSE; }
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int sh4_get_breakpoint( uint32_t pc ) { return 0; }
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void sh4_core_exit( int exit_code ){}
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void sh4_flush_icache(){}
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void event_execute() {}
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void TMU_run_slice( uint32_t nanos ) {}
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void PMM_write_control( int ctr, uint32_t val ) { }
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void SCIF_run_slice( uint32_t nanos ) {}
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void FASTCALL sh4_write_byte( uint32_t addr, uint32_t val ) {}
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void FASTCALL sh4_write_word( uint32_t addr, uint32_t val ) {}
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void FASTCALL sh4_write_long( uint32_t addr, uint32_t val ) {}
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void FASTCALL sh4_write_fpscr( uint32_t val ) { }
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void FASTCALL sh4_write_sr( uint32_t val ) { }
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uint32_t FASTCALL sh4_read_sr( void ) { return 0; }
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void FASTCALL sh4_sleep() { }
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void FASTCALL sh4_fsca( uint32_t angle, float *fr ) { }
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void FASTCALL sh4_ftrv( float *fv ) { }
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void FASTCALL signsat48(void) { }
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void sh4_switch_fr_banks() { }
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void mem_copy_to_sh4( sh4addr_t addr, sh4ptr_t src, size_t size ) { }
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gboolean sh4_has_page( sh4vma_t vma ) { return TRUE; }
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void syscall_invoke( uint32_t val ) { }
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void dreamcast_stop() {} 
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void dreamcast_reset() {}
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gboolean FASTCALL sh4_raise_reset( int exc ) { return TRUE; }
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gboolean FASTCALL sh4_raise_exception( int exc ) { return TRUE; }
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gboolean FASTCALL sh4_raise_tlb_exception( int exc ) { return TRUE; }
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gboolean FASTCALL sh4_raise_trap( int exc ) { return TRUE; }
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uint32_t sh4_sleep_run_slice(uint32_t nanosecs) { return nanosecs; }
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gboolean gui_error_dialog( const char *fmt, ... ) { return TRUE; }
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struct sh4_icache_struct sh4_icache;
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void usage()
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{
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    fprintf( stderr, "Usage: testsh4x86 [options] <input bin file>\n");
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    fprintf( stderr, "Options:\n");
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    fprintf( stderr, "  -d <filename>  Diff results against contents of file\n" );
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    fprintf( stderr, "  -h             Display this help message\n" );
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    fprintf( stderr, "  -o <filename>  Output disassembly to file [stdout]\n" );
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    fprintf( stderr, "  -s <addr>      Specify start address of binary [8C010000]\n" );
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}
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void emit( void *ptr, int level, const gchar *source, const char *msg, ... )
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{
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    va_list ap;
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    va_start( ap, msg );
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    vfprintf( stderr, msg, ap );
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    fprintf( stderr, "\n" );
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    va_end(ap);
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}
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struct sh4_registers sh4r;
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int main( int argc, char *argv[] )
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{
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    struct stat st;
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    int opt;
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    while( (opt = getopt_long( argc, argv, option_list, longopts, NULL )) != -1 ) {
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	switch( opt ) {
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	case 'd':
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	    diff_file = optarg;
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	    break;
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	case 'o':
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	    output_file = optarg;
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	    break;
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	case 's':
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	    start_addr = strtoul(optarg, NULL, 0);
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	    break;
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	case 'h':
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	    usage();
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	    exit(0);
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	}
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    }
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    if( optind < argc ) {
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	input_file = argv[optind++];
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    } else {
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	usage();
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	exit(1);
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    }
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    mmio_region_MMU.mem = malloc(4096);
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    memset( mmio_region_MMU.mem, 0, 4096 );
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    ((uint32_t *)mmio_region_MMU.mem)[4] = 1;
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    in = fopen( input_file, "ro" );
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    if( in == NULL ) {
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	perror( "Unable to open input file" );
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	exit(2);
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    }
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    fstat( fileno(in), &st );
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    inbuf = malloc( st.st_size );
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    fread( inbuf, st.st_size, 1, in );
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    sh4_icache.mask = 0xFFFFF000;
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    sh4_icache.page_vma = start_addr & 0xFFFFF000;
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    sh4_icache.page = (unsigned char *)(inbuf - (sh4_icache.page_vma&0xFFF));
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    sh4_icache.page_ppa = start_addr & 0xFFFFF000;
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    xlat_cache_init();
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    uintptr_t pc;
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    uint8_t *buf = sh4_translate_basic_block( start_addr );
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    uint32_t buflen = xlat_get_code_size(buf);
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    x86_disasm_init( buf, buf, buflen );
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    x86_set_symtab( local_symbols, sizeof(local_symbols)/sizeof(struct x86_symbol) );
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    for( pc = buf; pc < buf + buflen;  ) {
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	char buf[256];
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	char op[256];
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	uintptr_t pc2 = x86_disasm_instruction( pc, buf, sizeof(buf), op );
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	fprintf( stdout, "%08x: %s\n", pc, buf );
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	pc = pc2;
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    }
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    return 0;
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}
.