mirror of
https://github.com/radareorg/radare2.git
synced 2025-02-08 14:58:54 +00:00
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/* radare2 - LGPL - Copyright 2014-2018 - pancake */
|
|
|
|
#include <r_asm.h>
|
|
#include <r_lib.h>
|
|
#include <capstone/capstone.h>
|
|
#include "../arch/ppc/libvle/vle.h"
|
|
#include "../arch/ppc/libps/libps.h"
|
|
|
|
static csh handle = 0;
|
|
|
|
static bool the_end(void *p) {
|
|
if (handle) {
|
|
cs_close (&handle);
|
|
handle = 0;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int decompile_vle(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
|
|
vle_t* instr = 0;
|
|
vle_handle handle = {0};
|
|
if (len < 2) {
|
|
return -1;
|
|
}
|
|
if (!vle_init (&handle, buf, len) && (instr = vle_next (&handle))) {
|
|
op->size = instr->size;
|
|
char buf_asm[64];
|
|
vle_snprint (buf_asm, sizeof (buf_asm), a->pc, instr);
|
|
r_asm_op_set_asm (op, buf_asm);
|
|
vle_free (instr);
|
|
} else {
|
|
r_asm_op_set_asm (op, "invalid");
|
|
op->size = 2;
|
|
return -1;
|
|
}
|
|
return op->size;
|
|
}
|
|
|
|
static int decompile_ps(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
|
|
ppcps_t instr = {0};
|
|
if (len < 4) {
|
|
return -1;
|
|
}
|
|
op->size = 4;
|
|
const ut32 data = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
|
|
if (libps_decode (data, &instr) < 1) {
|
|
r_asm_op_set_asm (op, "invalid");
|
|
return -1;
|
|
}
|
|
char buf_asm[64];
|
|
libps_snprint (buf_asm, sizeof (buf_asm), a->pc, &instr);
|
|
r_asm_op_set_asm (op, buf_asm);
|
|
return op->size;
|
|
}
|
|
|
|
static int disassemble(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
|
|
static int omode = -1, obits = -1;
|
|
int n, ret;
|
|
ut64 off = a->pc;
|
|
cs_insn* insn;
|
|
int mode = (a->bits == 64) ? CS_MODE_64 : (a->bits == 32) ? CS_MODE_32 : 0;
|
|
mode |= a->big_endian ? CS_MODE_BIG_ENDIAN : CS_MODE_LITTLE_ENDIAN;
|
|
|
|
if (a->cpu && strncmp (a->cpu, "vle", 3) == 0) {
|
|
// vle is big-endian only
|
|
if (!a->big_endian) {
|
|
return -1;
|
|
}
|
|
ret = decompile_vle (a, op, buf, len);
|
|
if (ret >= 0) {
|
|
return op->size;
|
|
}
|
|
} else if (a->cpu && strncmp (a->cpu, "ps", 2) == 0) {
|
|
// libps is big-endian only
|
|
if (!a->big_endian) {
|
|
return -1;
|
|
}
|
|
ret = decompile_ps (a, op, buf, len);
|
|
if (ret >= 0) {
|
|
return op->size;
|
|
}
|
|
}
|
|
if (mode != omode || a->bits != obits) {
|
|
cs_close (&handle);
|
|
handle = 0;
|
|
omode = mode;
|
|
obits = a->bits;
|
|
}
|
|
if (handle == 0) {
|
|
ret = cs_open (CS_ARCH_PPC, mode, &handle);
|
|
if (ret != CS_ERR_OK) {
|
|
return -1;
|
|
}
|
|
}
|
|
op->size = 4;
|
|
cs_option (handle, CS_OPT_DETAIL, CS_OPT_OFF);
|
|
n = cs_disasm (handle, (const ut8*) buf, len, off, 1, &insn);
|
|
op->size = 4;
|
|
if (n > 0 && insn->size > 0) {
|
|
const char *opstr = sdb_fmt ("%s%s%s", insn->mnemonic,
|
|
insn->op_str[0] ? " " : "", insn->op_str);
|
|
r_asm_op_set_asm (op, opstr);
|
|
cs_free (insn, n);
|
|
return op->size;
|
|
}
|
|
r_asm_op_set_asm (op, "invalid");
|
|
op->size = 4;
|
|
cs_free (insn, n);
|
|
return op->size;
|
|
}
|
|
|
|
RAsmPlugin r_asm_plugin_ppc_cs = {
|
|
.name = "ppc",
|
|
.desc = "Capstone PowerPC disassembler",
|
|
.license = "BSD",
|
|
.author = "pancake",
|
|
.arch = "ppc",
|
|
.cpus = "ppc,vle,ps",
|
|
.bits = 32 | 64,
|
|
.endian = R_SYS_ENDIAN_LITTLE | R_SYS_ENDIAN_BIG,
|
|
.fini = the_end,
|
|
.disassemble = &disassemble,
|
|
};
|
|
|
|
#ifndef R2_PLUGIN_INCORE
|
|
R_API RLibStruct radare_plugin = {
|
|
.type = R_LIB_TYPE_ASM,
|
|
.data = &r_asm_plugin_ppc_cs,
|
|
.version = R2_VERSION
|
|
};
|
|
#endif
|