Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | /* Copyright (C) 2002 Red Hat, Inc. |
| 2 | Written by Ulrich Drepper <drepper@redhat.com>, 2002. |
| 3 | |
| 4 | This program is Open Source software; you can redistribute it and/or |
| 5 | modify it under the terms of the Open Software License version 1.0 as |
| 6 | published by the Open Source Initiative. |
| 7 | |
| 8 | You should have received a copy of the Open Software License along |
| 9 | with this program; if not, you may obtain a copy of the Open Software |
| 10 | License version 1.0 from http://www.opensource.org/licenses/osl.php or |
| 11 | by writing the Open Source Initiative c/o Lawrence Rosen, Esq., |
| 12 | 3001 King Ranch Road, Ukiah, CA 95482. */ |
| 13 | |
| 14 | #include <fcntl.h> |
| 15 | #include <inttypes.h> |
| 16 | #include <libasm.h> |
| 17 | #include <libelf.h> |
| 18 | #include <stdio.h> |
| 19 | #include <unistd.h> |
| 20 | |
| 21 | |
| 22 | static const char fname[] = "asm-tst7-out.o"; |
| 23 | |
| 24 | |
| 25 | int |
| 26 | main (void) |
| 27 | { |
| 28 | int result = 0; |
| 29 | size_t cnt; |
| 30 | AsmCtx_t *ctx; |
| 31 | Elf *elf; |
| 32 | int fd; |
| 33 | |
| 34 | elf_version (EV_CURRENT); |
| 35 | |
| 36 | ctx = asm_begin (fname, false, EM_386, ELFCLASS32, ELFDATA2LSB); |
| 37 | if (ctx == NULL) |
| 38 | { |
| 39 | printf ("cannot create assembler context: %s\n", asm_errmsg (-1)); |
| 40 | return 1; |
| 41 | } |
| 42 | |
| 43 | if (asm_newcomsym (ctx, "commsym", 4, 16) == NULL) |
| 44 | { |
| 45 | printf ("cannot create common symbol: %s\n", asm_errmsg (-1)); |
| 46 | asm_abort (ctx); |
| 47 | return 1; |
| 48 | } |
| 49 | |
| 50 | /* Create the output file. */ |
| 51 | if (asm_end (ctx) != 0) |
| 52 | { |
| 53 | printf ("cannot create output file: %s\n", asm_errmsg (-1)); |
| 54 | asm_abort (ctx); |
| 55 | return 1; |
| 56 | } |
| 57 | |
| 58 | /* Check the file. */ |
| 59 | fd = open (fname, O_RDONLY); |
| 60 | if (fd == -1) |
| 61 | { |
| 62 | printf ("cannot open generated file: %m\n"); |
| 63 | result = 1; |
| 64 | goto out; |
| 65 | } |
| 66 | |
| 67 | elf = elf_begin (fd, ELF_C_READ, NULL); |
| 68 | if (elf == NULL) |
| 69 | { |
| 70 | printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1)); |
| 71 | result = 1; |
| 72 | goto out_close; |
| 73 | } |
| 74 | if (elf_kind (elf) != ELF_K_ELF) |
| 75 | { |
| 76 | puts ("not a valid ELF file"); |
| 77 | result = 1; |
| 78 | goto out_close2; |
| 79 | } |
| 80 | |
| 81 | for (cnt = 1; 1; ++cnt) |
| 82 | { |
| 83 | Elf_Scn *scn; |
| 84 | GElf_Shdr shdr_mem; |
| 85 | GElf_Shdr *shdr; |
| 86 | |
| 87 | scn = elf_getscn (elf, cnt); |
| 88 | if (scn == NULL) |
| 89 | { |
| 90 | printf ("cannot get section %Zd: %s\n", cnt, elf_errmsg (-1)); |
| 91 | result = 1; |
| 92 | continue; |
| 93 | } |
| 94 | |
| 95 | shdr = gelf_getshdr (scn, &shdr_mem); |
| 96 | if (shdr == NULL) |
| 97 | { |
| 98 | printf ("cannot get section header for section %Zd: %s\n", |
| 99 | cnt, elf_errmsg (-1)); |
| 100 | result = 1; |
| 101 | continue; |
| 102 | } |
| 103 | /* We are looking for the symbol table. */ |
| 104 | if (shdr->sh_type != SHT_SYMTAB) |
| 105 | continue; |
| 106 | |
| 107 | for (cnt = 1; cnt< (shdr->sh_size |
| 108 | / gelf_fsize (elf, ELF_T_SYM, 1, EV_CURRENT)); |
| 109 | ++cnt) |
| 110 | { |
| 111 | GElf_Sym sym_mem; |
| 112 | GElf_Sym *sym; |
| 113 | |
| 114 | if (cnt > 1) |
| 115 | { |
| 116 | puts ("too many symbol"); |
| 117 | result = 1; |
| 118 | break; |
| 119 | } |
| 120 | |
| 121 | sym = gelf_getsym (elf_getdata (scn, NULL), cnt, &sym_mem); |
| 122 | if (sym == NULL) |
| 123 | { |
| 124 | printf ("cannot get symbol %zu: %s\n", cnt, elf_errmsg (-1)); |
| 125 | result = 1; |
| 126 | } |
| 127 | else |
| 128 | { |
| 129 | if (sym->st_shndx != SHN_COMMON) |
| 130 | { |
| 131 | printf ("expected common symbol, got section %u\n", |
| 132 | (unsigned int) sym->st_shndx); |
| 133 | result = 1; |
| 134 | } |
| 135 | |
| 136 | if (sym->st_value != 16) |
| 137 | { |
| 138 | printf ("requested alignment 16, is %" PRIuMAX "\n", |
| 139 | (uintmax_t) sym->st_value); |
| 140 | result = 1; |
| 141 | } |
| 142 | |
| 143 | if (sym->st_size != 4) |
| 144 | { |
| 145 | printf ("requested size 4, is %" PRIuMAX "\n", |
| 146 | (uintmax_t) sym->st_value); |
| 147 | result = 1; |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | break; |
| 153 | } |
| 154 | |
| 155 | out_close2: |
| 156 | elf_end (elf); |
| 157 | out_close: |
| 158 | close (fd); |
| 159 | out: |
| 160 | /* We don't need the file anymore. */ |
| 161 | unlink (fname); |
| 162 | |
| 163 | return result; |
| 164 | } |