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https://github.com/radareorg/radare2.git
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103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/* radare2 - LGPL - Copyright 2014-2015 - pancake */
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#include <r_asm.h>
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#include <r_lib.h>
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#include <capstone/capstone.h>
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#include "../arch/ppc/libvle/vle.h"
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static csh handle = 0;
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static bool the_end(void *p) {
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if (handle) {
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cs_close (&handle);
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handle = 0;
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}
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return true;
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}
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static int decompile_vle(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
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vle_t* instr = 0;
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vle_handle handle = {0};
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if (len < 2) {
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return -1;
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}
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if (!vle_init (&handle, buf, len) && (instr = vle_next (&handle))) {
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op->size = instr->size;
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vle_snprint (op->buf_asm, R_ASM_BUFSIZE, a->pc, instr);
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vle_free (instr);
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} else {
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strcpy (op->buf_asm, "invalid");
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op->size = 2;
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return -1;
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}
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return op->size;
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}
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static int disassemble(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
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static int omode = -1, obits = -1;
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int n, ret;
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ut64 off = a->pc;
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cs_insn* insn;
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int mode = (a->bits == 64) ? CS_MODE_64 : (a->bits == 32) ? CS_MODE_32 : 0;
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mode |= a->big_endian ? CS_MODE_BIG_ENDIAN : CS_MODE_LITTLE_ENDIAN;
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if (a->cpu && strncmp (a->cpu, "vle", 3) == 0) {
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// vle is big-endian only
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if (!a->big_endian) {
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return -1;
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}
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ret = decompile_vle (a, op, buf, len);
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if (ret >= 0) {
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return op->size;
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}
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}
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if (mode != omode || a->bits != obits) {
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cs_close (&handle);
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handle = 0;
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omode = mode;
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obits = a->bits;
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}
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if (handle == 0) {
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ret = cs_open (CS_ARCH_PPC, mode, &handle);
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if (ret != CS_ERR_OK) {
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return -1;
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}
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}
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op->size = 4;
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op->buf_asm[0] = 0;
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cs_option (handle, CS_OPT_DETAIL, CS_OPT_OFF);
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n = cs_disasm (handle, (const ut8*) buf, len, off, 1, &insn);
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op->size = 4;
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if (n > 0 && insn->size > 0) {
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snprintf (op->buf_asm, R_ASM_BUFSIZE, "%s%s%s",
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insn->mnemonic, insn->op_str[0] ? " " : "",
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insn->op_str);
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cs_free (insn, n);
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return op->size;
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}
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//op->size = -1;
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cs_free (insn, n);
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return 4;
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}
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RAsmPlugin r_asm_plugin_ppc_cs = {
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.name = "ppc",
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.desc = "Capstone PowerPC disassembler",
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.license = "BSD",
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.arch = "ppc",
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.cpus = "ppc,vle",
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.bits = 32 | 64,
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.endian = R_SYS_ENDIAN_LITTLE | R_SYS_ENDIAN_BIG,
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.fini = the_end,
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.disassemble = &disassemble,
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};
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#ifndef CORELIB
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RLibStruct radare_plugin = {
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.type = R_LIB_TYPE_ASM,
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.data = &r_asm_plugin_ppc_cs,
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.version = R2_VERSION
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};
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#endif
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