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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/*===-- disassemble.c - tool for testing libLLVM and llvm-c API -----------===*\
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|* *|
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|* Part of the LLVM Project, under the Apache License v2.0 with LLVM *|
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|* Exceptions. *|
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|* See https://llvm.org/LICENSE.txt for license information. *|
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|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception *|
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|* *|
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|*===----------------------------------------------------------------------===*|
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|* *|
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|* This file implements the --disassemble command in llvm-c-test. *|
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|* --disassemble reads lines from stdin, parses them as a triple and hex *|
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|* machine code, and prints disassembly of the machine code. *|
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|* *|
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\*===----------------------------------------------------------------------===*/
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#include "llvm-c-test.h"
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#include "llvm-c/Disassembler.h"
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#include "llvm-c/Target.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static void pprint(int pos, unsigned char *buf, int len, const char *disasm) {
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int i;
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printf("%04x: ", pos);
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for (i = 0; i < 8; i++) {
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if (i < len) {
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printf("%02x ", buf[i]);
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} else {
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printf(" ");
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}
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}
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printf(" %s\n", disasm);
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}
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static void do_disassemble(const char *triple, const char *features,
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unsigned char *buf, int siz) {
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LLVMDisasmContextRef D = LLVMCreateDisasmCPUFeatures(triple, "", features,
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NULL, 0, NULL, NULL);
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char outline[1024];
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int pos;
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if (!D) {
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printf("ERROR: Couldn't create disassembler for triple %s\n", triple);
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return;
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}
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pos = 0;
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while (pos < siz) {
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size_t l = LLVMDisasmInstruction(D, buf + pos, siz - pos, 0, outline,
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sizeof(outline));
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if (!l) {
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pprint(pos, buf + pos, 1, "\t???");
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pos++;
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} else {
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pprint(pos, buf + pos, l, outline);
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pos += l;
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}
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}
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LLVMDisasmDispose(D);
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}
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static void handle_line(char **tokens, int ntokens) {
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unsigned char disbuf[128];
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size_t disbuflen = 0;
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const char *triple = tokens[0];
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const char *features = tokens[1];
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int i;
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printf("triple: %s, features: %s\n", triple, features);
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if (!strcmp(features, "NULL"))
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features = "";
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for (i = 2; i < ntokens; i++) {
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disbuf[disbuflen++] = strtol(tokens[i], NULL, 16);
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if (disbuflen >= sizeof(disbuf)) {
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fprintf(stderr, "Warning: Too long line, truncating\n");
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break;
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}
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}
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do_disassemble(triple, features, disbuf, disbuflen);
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}
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int llvm_disassemble(void) {
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LLVMInitializeAllTargetInfos();
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LLVMInitializeAllTargetMCs();
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LLVMInitializeAllDisassemblers();
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llvm_tokenize_stdin(handle_line);
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return 0;
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}
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