| /*===-- disassemble.c - tool for testing libLLVM and llvm-c API -----------===*\ |
| |* *| |
| |* Part of the LLVM Project, under the Apache License v2.0 with LLVM *| |
| |* Exceptions. *| |
| |* See https://llvm.org/LICENSE.txt for license information. *| |
| |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception *| |
| |* *| |
| |*===----------------------------------------------------------------------===*| |
| |* *| |
| |* This file implements the --disassemble command in llvm-c-test. *| |
| |* --disassemble reads lines from stdin, parses them as a triple and hex *| |
| |* machine code, and prints disassembly of the machine code. *| |
| |* *| |
| \*===----------------------------------------------------------------------===*/ |
| |
| #include "llvm-c-test.h" |
| #include "llvm-c/Disassembler.h" |
| #include "llvm-c/Target.h" |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| static void pprint(int pos, unsigned char *buf, int len, const char *disasm) { |
| int i; |
| printf("%04x: ", pos); |
| for (i = 0; i < 8; i++) { |
| if (i < len) { |
| printf("%02x ", buf[i]); |
| } else { |
| printf(" "); |
| } |
| } |
| |
| printf(" %s\n", disasm); |
| } |
| |
| static void do_disassemble(const char *triple, const char *features, |
| unsigned char *buf, int siz) { |
| LLVMDisasmContextRef D = LLVMCreateDisasmCPUFeatures(triple, "", features, |
| NULL, 0, NULL, NULL); |
| char outline[1024]; |
| int pos; |
| |
| if (!D) { |
| printf("ERROR: Couldn't create disassembler for triple %s\n", triple); |
| return; |
| } |
| |
| pos = 0; |
| while (pos < siz) { |
| size_t l = LLVMDisasmInstruction(D, buf + pos, siz - pos, 0, outline, |
| sizeof(outline)); |
| if (!l) { |
| pprint(pos, buf + pos, 1, "\t???"); |
| pos++; |
| } else { |
| pprint(pos, buf + pos, l, outline); |
| pos += l; |
| } |
| } |
| |
| LLVMDisasmDispose(D); |
| } |
| |
| static void handle_line(char **tokens, int ntokens) { |
| unsigned char disbuf[128]; |
| size_t disbuflen = 0; |
| const char *triple = tokens[0]; |
| const char *features = tokens[1]; |
| int i; |
| |
| printf("triple: %s, features: %s\n", triple, features); |
| if (!strcmp(features, "NULL")) |
| features = ""; |
| |
| for (i = 2; i < ntokens; i++) { |
| disbuf[disbuflen++] = strtol(tokens[i], NULL, 16); |
| if (disbuflen >= sizeof(disbuf)) { |
| fprintf(stderr, "Warning: Too long line, truncating\n"); |
| break; |
| } |
| } |
| do_disassemble(triple, features, disbuf, disbuflen); |
| } |
| |
| int llvm_disassemble(void) { |
| LLVMInitializeAllTargetInfos(); |
| LLVMInitializeAllTargetMCs(); |
| LLVMInitializeAllDisassemblers(); |
| |
| llvm_tokenize_stdin(handle_line); |
| |
| return 0; |
| } |