asm_snes.c

Go to the documentation of this file.

// SPDX-FileCopyrightText: 2012-2015 condret <condr3t@protonmail.com>
// SPDX-FileCopyrightText: 2012-2015 pancake <pancake@nopcode.org>
// SPDX-License-Identifier: LGPL-3.0-only
 
#include <rz_types.h>
#include <rz_util.h>
#include <rz_asm.h>
#include <rz_lib.h>
#include "../arch/snes/snesdis.c"
#include "asm_snes.h"
 
static int dis(RzAsm *a, RzAsmOp *op, const ut8 *buf, int len) {
    struct snes_asm_flags *snesflags = (struct snes_asm_flags *)a->plugin_data;
    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;
}
 
static bool snes_asm_init(void **user) {
    *user = RZ_NEW0(struct snes_asm_flags);
    return *user != NULL;
}
 
static bool snes_asm_fini(void *user) {
    rz_return_val_if_fail(user, false);
    free(user);
    return true;
}
 
RzAsmPlugin rz_asm_plugin_snes = {
    .name = "snes",
    .desc = "SuperNES CPU",
    .arch = "snes",
    .bits = 8 | 16,
    .init = snes_asm_init,
    .fini = snes_asm_fini,
    .endian = RZ_SYS_ENDIAN_LITTLE,
    .license = "LGPL3",
    .disassemble = &dis
};
 
#ifndef RZ_PLUGIN_INCORE
RZ_API RzLibStruct rizin_plugin = {
    .type = RZ_LIB_TYPE_ASM,
    .data = &rz_asm_plugin_snes,
    .version = RZ_VERSION
};
#endif