Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/backends/arm_symbol.c b/backends/arm_symbol.c
new file mode 100644
index 0000000..3edda72
--- /dev/null
+++ b/backends/arm_symbol.c
@@ -0,0 +1,157 @@
+/* Arm specific symbolic name handling.
+ Copyright (C) 2002-2009, 2014, 2015, 2017 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ 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 copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <elf.h>
+#include <stddef.h>
+#include <string.h>
+
+#define BACKEND arm_
+#include "libebl_CPU.h"
+
+
+const char *
+arm_segment_type_name (int segment, char *buf __attribute__ ((unused)),
+ size_t len __attribute__ ((unused)))
+{
+ switch (segment)
+ {
+ case PT_ARM_EXIDX:
+ return "ARM_EXIDX";
+ }
+ return NULL;
+}
+
+/* Return symbolic representation of section type. */
+const char *
+arm_section_type_name (int type,
+ char *buf __attribute__ ((unused)),
+ size_t len __attribute__ ((unused)))
+{
+ switch (type)
+ {
+ case SHT_ARM_EXIDX:
+ return "ARM_EXIDX";
+ case SHT_ARM_PREEMPTMAP:
+ return "ARM_PREEMPTMAP";
+ case SHT_ARM_ATTRIBUTES:
+ return "ARM_ATTRIBUTES";
+ }
+
+ return NULL;
+}
+
+/* Check whether machine flags are valid. */
+bool
+arm_machine_flag_check (GElf_Word flags)
+{
+ switch (flags & EF_ARM_EABIMASK)
+ {
+ case EF_ARM_EABI_UNKNOWN:
+ case EF_ARM_EABI_VER1:
+ case EF_ARM_EABI_VER2:
+ case EF_ARM_EABI_VER3:
+ case EF_ARM_EABI_VER4:
+ case EF_ARM_EABI_VER5:
+ break;
+ default:
+ return false;
+ }
+
+ return ((flags &~ (EF_ARM_EABIMASK
+ | EF_ARM_RELEXEC
+ | EF_ARM_HASENTRY
+ | EF_ARM_INTERWORK
+ | EF_ARM_APCS_26
+ | EF_ARM_APCS_FLOAT
+ | EF_ARM_PIC
+ | EF_ARM_ALIGN8
+ | EF_ARM_NEW_ABI
+ | EF_ARM_OLD_ABI
+ | EF_ARM_SOFT_FLOAT
+ | EF_ARM_VFP_FLOAT
+ | EF_ARM_MAVERICK_FLOAT
+ | EF_ARM_SYMSARESORTED
+ | EF_ARM_DYNSYMSUSESEGIDX
+ | EF_ARM_MAPSYMSFIRST
+ | EF_ARM_EABIMASK
+ | EF_ARM_BE8
+ | EF_ARM_LE8)) == 0);
+}
+
+/* Check for the simple reloc types. */
+Elf_Type
+arm_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type)
+{
+ switch (type)
+ {
+ case R_ARM_ABS32:
+ return ELF_T_WORD;
+ case R_ARM_ABS16:
+ return ELF_T_HALF;
+ case R_ARM_ABS8:
+ return ELF_T_BYTE;
+ default:
+ return ELF_T_NUM;
+ }
+}
+
+/* The SHT_ARM_EXIDX section type is a valid target for relocation. */
+bool
+arm_check_reloc_target_type (Ebl *ebl __attribute__ ((unused)), Elf64_Word sh_type)
+{
+ return sh_type == SHT_ARM_EXIDX;
+}
+
+const char *
+arm_symbol_type_name (int type,
+ char *buf __attribute__ ((unused)),
+ size_t len __attribute__ ((unused)))
+{
+ switch (type)
+ {
+ case STT_ARM_TFUNC:
+ return "ARM_TFUNC";
+ }
+ return NULL;
+}
+
+/* A data mapping symbol is a symbol with "$d" name or "$d.<any...>" name,
+ * STT_NOTYPE, STB_LOCAL and st_size of zero. The indicate the stat of a
+ * sequence of data items. */
+bool
+arm_data_marker_symbol (const GElf_Sym *sym, const char *sname)
+{
+ return (sym != NULL && sname != NULL
+ && sym->st_size == 0 && GELF_ST_BIND (sym->st_info) == STB_LOCAL
+ && GELF_ST_TYPE (sym->st_info) == STT_NOTYPE
+ && (strcmp (sname, "$d") == 0 || strncmp (sname, "$d.", 3) == 0));
+}