1 /* Add string to a section. 2 Copyright (C) 2002 Red Hat, Inc. 3 This file is part of elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 5 6 This file is free software; you can redistribute it and/or modify 7 it under the terms of either 8 9 * the GNU Lesser General Public License as published by the Free 10 Software Foundation; either version 3 of the License, or (at 11 your option) any later version 12 13 or 14 15 * the GNU General Public License as published by the Free 16 Software Foundation; either version 2 of the License, or (at 17 your option) any later version 18 19 or both in parallel, as here. 20 21 elfutils is distributed in the hope that it will be useful, but 22 WITHOUT ANY WARRANTY; without even the implied warranty of 23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24 General Public License for more details. 25 26 You should have received copies of the GNU General Public License and 27 the GNU Lesser General Public License along with this program. If 28 not, see <http://www.gnu.org/licenses/>. */ 29 30 #ifdef HAVE_CONFIG_H 31 # include <config.h> 32 #endif 33 34 #include <ctype.h> 35 #include <stdio.h> 36 #include <string.h> 37 38 #include <libasmP.h> 39 40 41 /* Add zero terminated string STR of size LEN to (sub)section ASMSCN. */ 42 int 43 asm_addstrz (asmscn, str, len) 44 AsmScn_t *asmscn; 45 const char *str; 46 size_t len; 47 { 48 if (asmscn == NULL) 49 return -1; 50 51 if (unlikely (asmscn->type == SHT_NOBITS)) 52 { 53 if (len == 0) 54 { 55 if (str[0] != '\0') 56 { 57 __libasm_seterrno (ASM_E_TYPE); 58 return -1; 59 } 60 } 61 else 62 { 63 size_t cnt; 64 65 for (cnt = 0; cnt < len; ++cnt) 66 if (str[cnt] != '\0') 67 { 68 __libasm_seterrno (ASM_E_TYPE); 69 return -1; 70 } 71 } 72 } 73 74 if (len == 0) 75 len = strlen (str) + 1; 76 77 if (unlikely (asmscn->ctx->textp)) 78 { 79 bool nextline = true; 80 81 do 82 { 83 if (nextline) 84 { 85 fputs ("\t.string\t\"", asmscn->ctx->out.file); 86 nextline = false; 87 } 88 89 if (*str == '\0') 90 fputs ("\\000", asmscn->ctx->out.file); 91 else if (! isascii (*str)) 92 fprintf (asmscn->ctx->out.file, "\\%03o", 93 (unsigned int) *((unsigned char *)str)); 94 else if (*str == '\\') 95 fputs ("\\\\", asmscn->ctx->out.file); 96 else if (*str == '\n') 97 { 98 fputs ("\\n\"", asmscn->ctx->out.file); 99 nextline = true; 100 } 101 else 102 fputc (*str, asmscn->ctx->out.file); 103 104 ++str; 105 } 106 while (--len > 0 && (len > 1 || *str != '\0')); 107 108 if (! nextline) 109 fputs ("\"\n", asmscn->ctx->out.file); 110 } 111 else 112 { 113 /* Make sure there is enough room. */ 114 if (__libasm_ensure_section_space (asmscn, len) != 0) 115 return -1; 116 117 /* Copy the string. */ 118 memcpy (&asmscn->content->data[asmscn->content->len], str, len); 119 120 /* Adjust the pointer in the data buffer. */ 121 asmscn->content->len += len; 122 123 /* Increment the offset in the (sub)section. */ 124 asmscn->offset += len; 125 } 126 127 return 0; 128 } 129