71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
// SPDX-FileCopyrightText: 2019 pancake <pancake@nopcode.org>
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// SPDX-License-Identifier: LGPL-3.0-only
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#include <rz_asm.h>
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#include <rz_lib.h>
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#include "cs_helper.h"
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CAPSTONE_DEFINE_PLUGIN_FUNCTIONS(riscv_asm);
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static int riscv_disassemble(RzAsm *a, RzAsmOp *op, const ut8 *buf, int len) {
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CapstoneContext *ctx = (CapstoneContext *)a->plugin_data;
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int ret = -1;
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cs_insn *insn;
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cs_mode mode = (a->bits == 64) ? CS_MODE_RISCV64 : CS_MODE_RISCV32;
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op->size = 4;
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if (ctx->omode != mode) {
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cs_close(&ctx->handle);
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ctx->omode = -1;
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}
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if (!ctx->handle) {
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ret = cs_open(CS_ARCH_RISCV, mode, &ctx->handle);
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if (ret) {
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goto fin;
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}
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ctx->omode = mode;
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// cs_option (ctx->handle, CS_OPT_DETAIL, CS_OPT_OFF);
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}
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int n = cs_disasm(ctx->handle, (ut8 *)buf, len, a->pc, 1, &insn);
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if (n < 1) {
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rz_asm_op_set_asm(op, "invalid");
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op->size = 2;
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goto fin;
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}
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if (insn->size < 1) {
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goto fin;
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}
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op->size = insn->size;
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rz_asm_op_setf_asm(op, "%s%s%s", insn->mnemonic, insn->op_str[0] ? " " : "", insn->op_str);
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char *str = rz_asm_op_get_asm(op);
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if (str) {
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// remove the '$'<registername> in the string
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rz_str_replace_char(str, '$', 0);
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}
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cs_free(insn, n);
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fin:
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return op->size;
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}
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RzAsmPlugin rz_asm_plugin_riscv_cs = {
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.name = "riscv.cs",
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.desc = "RISC-V Capstone-based disassembler",
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.license = "BSD",
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.arch = "riscv",
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.cpus = "",
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.bits = 32 | 64,
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.endian = RZ_SYS_ENDIAN_LITTLE | RZ_SYS_ENDIAN_BIG,
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.init = riscv_asm_init,
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.fini = riscv_asm_fini,
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.disassemble = &riscv_disassemble,
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.mnemonics = riscv_asm_mnemonics,
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};
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#ifndef RZ_PLUGIN_INCORE
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RZ_API RzLibStruct rizin_plugin = {
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.type = RZ_LIB_TYPE_ASM,
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.data = &rz_asm_plugin_riscv_cs,
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.version = RZ_VERSION
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};
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#endif
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