radare2/libr/asm/p/asm_snes.c
2017-11-10 13:38:05 +01:00

57 lines
1.3 KiB
C

/* radare - LGPL - Copyright 2012-2015 - condret, pancake */
#include <r_types.h>
#include <r_util.h>
#include <r_asm.h>
#include <r_lib.h>
#include "../arch/snes/snesdis.c"
#include "asm_snes.h"
static struct snes_asm_flags* snesflags = NULL;
static bool snes_asm_init (void* user) {
if (!snesflags) snesflags = malloc(sizeof( struct snes_asm_flags ));
memset(snesflags,0,sizeof (struct snes_asm_flags));
return 0;
}
static bool snes_asm_fini (void* user) {
free(snesflags);
snesflags = NULL;
return 0;
}
static int dis(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
int dlen = snesDisass (snesflags->M, snesflags->X, a->pc, op, buf, len);
if (dlen<0) dlen=0;
op->size = dlen;
if (buf[0] == 0xc2) { //REP
if ( buf[1] & 0x10 ) snesflags->X = 0;
if ( buf[1] & 0x20 ) snesflags->M = 0;
} else if (buf[0] == 0xe2) { //SEP
if ( buf[1] & 0x10 ) snesflags->X = 1;
if ( buf[1] & 0x20 ) snesflags->M = 1;
}
return dlen;
}
RAsmPlugin r_asm_plugin_snes = {
.name = "snes",
.desc = "SuperNES CPU",
.arch = "snes",
.bits = 8|16,
.init = snes_asm_init,
.fini = snes_asm_fini,
.endian = R_SYS_ENDIAN_LITTLE,
.license = "LGPL3",
.disassemble = &dis
};
#ifndef CORELIB
RLibStruct radare_plugin = {
.type = R_LIB_TYPE_ASM,
.data = &r_asm_plugin_snes,
.version = R2_VERSION
};
#endif