diff options
Diffstat (limited to 'src/libasm/asm_addint8.c')
-rw-r--r-- | src/libasm/asm_addint8.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/libasm/asm_addint8.c b/src/libasm/asm_addint8.c new file mode 100644 index 00000000..ff4376b8 --- /dev/null +++ b/src/libasm/asm_addint8.c @@ -0,0 +1,120 @@ +/* Add integer to a section. + Copyright (C) 2002, 2005 Red Hat, Inc. + This file is part of Red Hat elfutils. + Written by Ulrich Drepper <drepper@redhat.com>, 2002. + + Red Hat elfutils is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by the + Free Software Foundation; version 2 of the License. + + Red Hat elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License along + with Red Hat elfutils; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. + + Red Hat elfutils is an included package of the Open Invention Network. + An included package of the Open Invention Network is a package for which + Open Invention Network licensees cross-license their patents. No patent + license is granted, either expressly or impliedly, by designation as an + included package. Should you wish to participate in the Open Invention + Network licensing program, please visit www.openinventionnetwork.com + <http://www.openinventionnetwork.com>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <byteswap.h> +#include <endian.h> +#include <inttypes.h> +#include <string.h> + +#include <libasmP.h> + +#ifndef SIZE +# define SIZE 8 +#endif + +#define FCT(size) _FCT(size) +#define _FCT(size) asm_addint##size +#define TYPE(size) _TYPE(size) +#define _TYPE(size) int##size##_t +#define BSWAP(size) _BSWAP(size) +#define _BSWAP(size) bswap_##size + + +int +FCT(SIZE) (asmscn, num) + AsmScn_t *asmscn; + TYPE(SIZE) num; +{ + if (asmscn == NULL) + return -1; + + if (asmscn->type == SHT_NOBITS && unlikely (num != 0)) + { + __libasm_seterrno (ASM_E_TYPE); + return -1; + } + + if (unlikely (asmscn->ctx->textp)) + { + // XXX Needs to use backend specified pseudo-ops + if (SIZE == 8) + fprintf (asmscn->ctx->out.file, "\t.byte\t%" PRId8 "\n", (int8_t) num); + else if (SIZE == 16) + fprintf (asmscn->ctx->out.file, "\t.value\t%" PRId16 "\n", + (int16_t) num); + else if (SIZE == 32) + fprintf (asmscn->ctx->out.file, "\t.long\t%" PRId32 "\n", + (int32_t) num); + else + { + // XXX This is not necessary for 64-bit machines + bool is_leb = (elf_getident (asmscn->ctx->out.elf, NULL)[EI_DATA] + == ELFDATA2LSB); + + fprintf (asmscn->ctx->out.file, + "\t.long\t%" PRId32 "\n\t.long\t%" PRId32 "\n", + (int32_t) (is_leb + ? num % 0x100000000ll : num / 0x100000000ll), + (int32_t) (is_leb + ? num / 0x100000000ll : num % 0x100000000ll)); + } + } + else + { +#if SIZE > 8 + bool is_leb = (elf_getident (asmscn->ctx->out.elf, NULL)[EI_DATA] + == ELFDATA2LSB); +#endif + TYPE(SIZE) var = num; + + /* Make sure we have enough room. */ + if (__libasm_ensure_section_space (asmscn, SIZE / 8) != 0) + return -1; + +#if SIZE > 8 + if ((BYTE_ORDER == LITTLE_ENDIAN && !is_leb) + || (BYTE_ORDER == BIG_ENDIAN && is_leb)) + var = BSWAP(SIZE) (var); +#endif + + /* Copy the variable value. */ + if (likely (asmscn->type == SHT_NOBITS)) + memcpy (&asmscn->content->data[asmscn->content->len], &var, SIZE / 8); + + /* Adjust the pointer in the data buffer. */ + asmscn->content->len += SIZE / 8; + + /* Increment the offset in the (sub)section. */ + asmscn->offset += SIZE / 8; + } + + return 0; +} +INTDEF(FCT(SIZE)) |