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-tst8-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_newabssym (ctx, "tst8-out.s", 4, 0xfeedbeef, STT_FILE, STB_LOCAL) |
| 44 | == NULL) |
| 45 | { |
| 46 | printf ("cannot create absolute symbol: %s\n", asm_errmsg (-1)); |
| 47 | asm_abort (ctx); |
| 48 | return 1; |
| 49 | } |
| 50 | |
| 51 | /* Create the output file. */ |
| 52 | if (asm_end (ctx) != 0) |
| 53 | { |
| 54 | printf ("cannot create output file: %s\n", asm_errmsg (-1)); |
| 55 | asm_abort (ctx); |
| 56 | return 1; |
| 57 | } |
| 58 | |
| 59 | /* Check the file. */ |
| 60 | fd = open (fname, O_RDONLY); |
| 61 | if (fd == -1) |
| 62 | { |
| 63 | printf ("cannot open generated file: %m\n"); |
| 64 | result = 1; |
| 65 | goto out; |
| 66 | } |
| 67 | |
| 68 | elf = elf_begin (fd, ELF_C_READ, NULL); |
| 69 | if (elf == NULL) |
| 70 | { |
| 71 | printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1)); |
| 72 | result = 1; |
| 73 | goto out_close; |
| 74 | } |
| 75 | if (elf_kind (elf) != ELF_K_ELF) |
| 76 | { |
| 77 | puts ("not a valid ELF file"); |
| 78 | result = 1; |
| 79 | goto out_close2; |
| 80 | } |
| 81 | |
| 82 | for (cnt = 1; 1; ++cnt) |
| 83 | { |
| 84 | Elf_Scn *scn; |
| 85 | GElf_Shdr shdr_mem; |
| 86 | GElf_Shdr *shdr; |
| 87 | |
| 88 | scn = elf_getscn (elf, cnt); |
| 89 | if (scn == NULL) |
| 90 | { |
| 91 | printf ("cannot get section %Zd: %s\n", cnt, elf_errmsg (-1)); |
| 92 | result = 1; |
| 93 | continue; |
| 94 | } |
| 95 | |
| 96 | shdr = gelf_getshdr (scn, &shdr_mem); |
| 97 | if (shdr == NULL) |
| 98 | { |
| 99 | printf ("cannot get section header for section %Zd: %s\n", |
| 100 | cnt, elf_errmsg (-1)); |
| 101 | result = 1; |
| 102 | continue; |
| 103 | } |
| 104 | /* We are looking for the symbol table. */ |
| 105 | if (shdr->sh_type != SHT_SYMTAB) |
| 106 | continue; |
| 107 | |
| 108 | for (cnt = 1; cnt< (shdr->sh_size |
| 109 | / gelf_fsize (elf, ELF_T_SYM, 1, EV_CURRENT)); |
| 110 | ++cnt) |
| 111 | { |
| 112 | GElf_Sym sym_mem; |
| 113 | GElf_Sym *sym; |
| 114 | |
| 115 | if (cnt > 1) |
| 116 | { |
| 117 | puts ("too many symbol"); |
| 118 | result = 1; |
| 119 | break; |
| 120 | } |
| 121 | |
| 122 | sym = gelf_getsym (elf_getdata (scn, NULL), cnt, &sym_mem); |
| 123 | if (sym == NULL) |
| 124 | { |
| 125 | printf ("cannot get symbol %zu: %s\n", cnt, elf_errmsg (-1)); |
| 126 | result = 1; |
| 127 | } |
| 128 | else |
| 129 | { |
| 130 | if (sym->st_shndx != SHN_ABS) |
| 131 | { |
| 132 | printf ("expected common symbol, got section %u\n", |
| 133 | (unsigned int) sym->st_shndx); |
| 134 | result = 1; |
| 135 | } |
| 136 | |
| 137 | if (sym->st_value != 0xfeedbeef) |
| 138 | { |
| 139 | printf ("requested value 0xfeedbeef, is %#" PRIxMAX "\n", |
| 140 | (uintmax_t) sym->st_value); |
| 141 | result = 1; |
| 142 | } |
| 143 | |
| 144 | if (sym->st_size != 4) |
| 145 | { |
| 146 | printf ("requested size 4, is %" PRIuMAX "\n", |
| 147 | (uintmax_t) sym->st_value); |
| 148 | result = 1; |
| 149 | } |
| 150 | |
| 151 | if (GELF_ST_TYPE (sym->st_info) != STT_FILE) |
| 152 | { |
| 153 | printf ("requested type FILE, is %u\n", |
| 154 | (unsigned int) GELF_ST_TYPE (sym->st_info)); |
| 155 | result = 1; |
| 156 | } |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | break; |
| 161 | } |
| 162 | |
| 163 | out_close2: |
| 164 | elf_end (elf); |
| 165 | out_close: |
| 166 | close (fd); |
| 167 | out: |
| 168 | /* We don't need the file anymore. */ |
| 169 | unlink (fname); |
| 170 | |
| 171 | return result; |
| 172 | } |