Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/tools/objtool/elf.h b/tools/objtool/elf.h
new file mode 100644
index 000000000..bc97ed86b
--- /dev/null
+++ b/tools/objtool/elf.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
+ *
+ * This program 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _OBJTOOL_ELF_H
+#define _OBJTOOL_ELF_H
+
+#include <stdio.h>
+#include <gelf.h>
+#include <linux/list.h>
+#include <linux/hashtable.h>
+
+#ifdef LIBELF_USE_DEPRECATED
+# define elf_getshdrnum    elf_getshnum
+# define elf_getshdrstrndx elf_getshstrndx
+#endif
+
+/*
+ * Fallback for systems without this "read, mmaping if possible" cmd.
+ */
+#ifndef ELF_C_READ_MMAP
+#define ELF_C_READ_MMAP ELF_C_READ
+#endif
+
+struct section {
+	struct list_head list;
+	GElf_Shdr sh;
+	struct list_head symbol_list;
+	DECLARE_HASHTABLE(symbol_hash, 8);
+	struct list_head rela_list;
+	DECLARE_HASHTABLE(rela_hash, 16);
+	struct section *base, *rela;
+	struct symbol *sym;
+	Elf_Data *data;
+	char *name;
+	int idx;
+	unsigned int len;
+	bool changed, text, rodata;
+};
+
+struct symbol {
+	struct list_head list;
+	struct hlist_node hash;
+	GElf_Sym sym;
+	struct section *sec;
+	char *name;
+	unsigned int idx;
+	unsigned char bind, type;
+	unsigned long offset;
+	unsigned int len;
+	struct symbol *pfunc, *cfunc;
+};
+
+struct rela {
+	struct list_head list;
+	struct hlist_node hash;
+	GElf_Rela rela;
+	struct section *rela_sec;
+	struct symbol *sym;
+	unsigned int type;
+	unsigned long offset;
+	int addend;
+};
+
+struct elf {
+	Elf *elf;
+	GElf_Ehdr ehdr;
+	int fd;
+	char *name;
+	struct list_head sections;
+	DECLARE_HASHTABLE(rela_hash, 16);
+};
+
+
+struct elf *elf_open(const char *name, int flags);
+struct section *find_section_by_name(struct elf *elf, const char *name);
+struct symbol *find_symbol_by_offset(struct section *sec, unsigned long offset);
+struct symbol *find_symbol_by_name(struct elf *elf, const char *name);
+struct symbol *find_symbol_containing(struct section *sec, unsigned long offset);
+struct rela *find_rela_by_dest(struct section *sec, unsigned long offset);
+struct rela *find_rela_by_dest_range(struct section *sec, unsigned long offset,
+				     unsigned int len);
+struct symbol *find_containing_func(struct section *sec, unsigned long offset);
+struct section *elf_create_section(struct elf *elf, const char *name, size_t
+				   entsize, int nr);
+struct section *elf_create_rela_section(struct elf *elf, struct section *base);
+int elf_rebuild_rela_section(struct section *sec);
+int elf_write(struct elf *elf);
+void elf_close(struct elf *elf);
+
+#define for_each_sec(file, sec)						\
+	list_for_each_entry(sec, &file->elf->sections, list)
+
+#endif /* _OBJTOOL_ELF_H */