1 /* Add integer to a section. 2 Copyright (C) 2002, 2005 Red Hat, Inc. 3 This file is part of Red Hat elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 5 6 Red Hat elfutils is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by the 8 Free Software Foundation; version 2 of the License. 9 10 Red Hat elfutils is distributed in the hope that it will be useful, but 11 WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 General Public License for more details. 14 15 You should have received a copy of the GNU General Public License along 16 with Red Hat elfutils; if not, write to the Free Software Foundation, 17 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 18 19 Red Hat elfutils is an included package of the Open Invention Network. 20 An included package of the Open Invention Network is a package for which 21 Open Invention Network licensees cross-license their patents. No patent 22 license is granted, either expressly or impliedly, by designation as an 23 included package. Should you wish to participate in the Open Invention 24 Network licensing program, please visit www.openinventionnetwork.com 25 <http://www.openinventionnetwork.com>. */ 26 27 #ifdef HAVE_CONFIG_H 28 # include <config.h> 29 #endif 30 31 #include <byteswap.h> 32 #include <endian.h> 33 #include <inttypes.h> 34 #include <string.h> 35 36 #include <libasmP.h> 37 38 #ifndef SIZE 39 # define SIZE 8 40 #endif 41 42 #define FCT(size) _FCT(size) 43 #define _FCT(size) asm_addint##size 44 #define TYPE(size) _TYPE(size) 45 #define _TYPE(size) int##size##_t 46 #define BSWAP(size) _BSWAP(size) 47 #define _BSWAP(size) bswap_##size 48 49 50 int 51 FCT(SIZE) (asmscn, num) 52 AsmScn_t *asmscn; 53 TYPE(SIZE) num; 54 { 55 if (asmscn == NULL) 56 return -1; 57 58 if (asmscn->type == SHT_NOBITS && unlikely (num != 0)) 59 { 60 __libasm_seterrno (ASM_E_TYPE); 61 return -1; 62 } 63 64 if (unlikely (asmscn->ctx->textp)) 65 { 66 // XXX Needs to use backend specified pseudo-ops 67 if (SIZE == 8) 68 fprintf (asmscn->ctx->out.file, "\t.byte\t%" PRId8 "\n", (int8_t) num); 69 else if (SIZE == 16) 70 fprintf (asmscn->ctx->out.file, "\t.value\t%" PRId16 "\n", 71 (int16_t) num); 72 else if (SIZE == 32) 73 fprintf (asmscn->ctx->out.file, "\t.long\t%" PRId32 "\n", 74 (int32_t) num); 75 else 76 { 77 // XXX This is not necessary for 64-bit machines 78 bool is_leb = (elf_getident (asmscn->ctx->out.elf, NULL)[EI_DATA] 79 == ELFDATA2LSB); 80 81 fprintf (asmscn->ctx->out.file, 82 "\t.long\t%" PRId32 "\n\t.long\t%" PRId32 "\n", 83 (int32_t) (is_leb 84 ? num % 0x100000000ll : num / 0x100000000ll), 85 (int32_t) (is_leb 86 ? num / 0x100000000ll : num % 0x100000000ll)); 87 } 88 } 89 else 90 { 91 #if SIZE > 8 92 bool is_leb = (elf_getident (asmscn->ctx->out.elf, NULL)[EI_DATA] 93 == ELFDATA2LSB); 94 #endif 95 TYPE(SIZE) var = num; 96 97 /* Make sure we have enough room. */ 98 if (__libasm_ensure_section_space (asmscn, SIZE / 8) != 0) 99 return -1; 100 101 #if SIZE > 8 102 if ((BYTE_ORDER == LITTLE_ENDIAN && !is_leb) 103 || (BYTE_ORDER == BIG_ENDIAN && is_leb)) 104 var = BSWAP(SIZE) (var); 105 #endif 106 107 /* Copy the variable value. */ 108 if (likely (asmscn->type == SHT_NOBITS)) 109 memcpy (&asmscn->content->data[asmscn->content->len], &var, SIZE / 8); 110 111 /* Adjust the pointer in the data buffer. */ 112 asmscn->content->len += SIZE / 8; 113 114 /* Increment the offset in the (sub)section. */ 115 asmscn->offset += SIZE / 8; 116 } 117 118 return 0; 119 } 120 INTDEF(FCT(SIZE)) 121
