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authorElliott Hughes <enh@google.com>2015-02-17 20:56:04 +0000
committerGerrit Code Review <noreply-gerritcodereview@google.com>2015-02-17 20:56:04 +0000
commitb48bfdc826ebdd316d5d8a4ff8f213391f1c710b (patch)
tree961dfef28571e02a7d969fbba9bb51991086476b /src/libasm/asm_addint8.c
parent5cb12756f3876faa52b0d4491745fc4c7adbab00 (diff)
parent41f677100e15f315f638774fbd055e497fc90069 (diff)
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Merge "Export elfutils headers and lose the version number from the path."
Diffstat (limited to 'src/libasm/asm_addint8.c')
-rw-r--r--src/libasm/asm_addint8.c120
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))