tools/llvm-c-test/object.c

   1 /*===-- object.c - tool for testing libLLVM and llvm-c API ----------------===*\
   2 |*                                                                            *|
   3 |* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
   4 |* Exceptions.                                                                *|
   5 |* See https://llvm.org/LICENSE.txt for license information.                  *|
   6 |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
   7 |*                                                                            *|
   8 |*===----------------------------------------------------------------------===*|
   9 |*                                                                            *|
  10 |* This file implements the --object-list-sections and --object-list-symbols  *|
  11 |* commands in llvm-c-test.                                                   *|
  12 |*                                                                            *|
  13 \*===----------------------------------------------------------------------===*/
  14
  15 #include "llvm-c-test.h"
  16 #include "llvm-c/Object.h"
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19
  20 int llvm_object_list_sections(void) {
  21   LLVMMemoryBufferRef MB;
  22   LLVMObjectFileRef O;
  23   LLVMSectionIteratorRef sect;
  24   char *msg = NULL;
  25
  26   if (LLVMCreateMemoryBufferWithSTDIN(&MB, &msg)) {
  27     fprintf(stderr, "Error reading file: %s\n", msg);
  28     exit(1);
  29   }
  30
  31   O = LLVMCreateObjectFile(MB);
  32   if (!O) {
  33     fprintf(stderr, "Error reading object\n");
  34     exit(1);
  35   }
  36
  37   sect = LLVMGetSections(O);
  38   while (!LLVMIsSectionIteratorAtEnd(O, sect)) {
  39     printf("'%s': @0x%08" PRIx64 " +%" PRIu64 "\n", LLVMGetSectionName(sect),
  40            LLVMGetSectionAddress(sect), LLVMGetSectionSize(sect));
  41
  42     LLVMMoveToNextSection(sect);
  43   }
  44
  45   LLVMDisposeSectionIterator(sect);
  46
  47   LLVMDisposeObjectFile(O);
  48
  49   return 0;
  50 }
  51
  52 int llvm_object_list_symbols(void) {
  53   LLVMMemoryBufferRef MB;
  54   LLVMObjectFileRef O;
  55   LLVMSectionIteratorRef sect;
  56   LLVMSymbolIteratorRef sym;
  57   char *msg = NULL;
  58
  59   if (LLVMCreateMemoryBufferWithSTDIN(&MB, &msg)) {
  60     fprintf(stderr, "Error reading file: %s\n", msg);
  61     exit(1);
  62   }
  63
  64   O = LLVMCreateObjectFile(MB);
  65   if (!O) {
  66     fprintf(stderr, "Error reading object\n");
  67     exit(1);
  68   }
  69
  70   sect = LLVMGetSections(O);
  71   sym = LLVMGetSymbols(O);
  72   while (!LLVMIsSymbolIteratorAtEnd(O, sym)) {
  73
  74     LLVMMoveToContainingSection(sect, sym);
  75     printf("%s @0x%08" PRIx64 " +%" PRIu64 " (%s)\n", LLVMGetSymbolName(sym),
  76            LLVMGetSymbolAddress(sym), LLVMGetSymbolSize(sym),
  77            LLVMGetSectionName(sect));
  78
  79     LLVMMoveToNextSymbol(sym);
  80   }
  81
  82   LLVMDisposeSymbolIterator(sym);
  83
  84   LLVMDisposeObjectFile(O);
  85
  86   return 0;
  87 }