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-rw-r--r--include/linux/elf.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/include/linux/elf.h b/include/linux/elf.h
index e3649b3e970e..5d5b0321da0b 100644
--- a/include/linux/elf.h
+++ b/include/linux/elf.h
@@ -2,6 +2,7 @@
#ifndef _LINUX_ELF_H
#define _LINUX_ELF_H
+#include <linux/types.h>
#include <asm/elf.h>
#include <uapi/linux/elf.h>
@@ -21,6 +22,9 @@
SET_PERSONALITY(ex)
#endif
+#define ELF32_GNU_PROPERTY_ALIGN 4
+#define ELF64_GNU_PROPERTY_ALIGN 8
+
#if ELF_CLASS == ELFCLASS32
extern Elf32_Dyn _DYNAMIC [];
@@ -31,6 +35,7 @@ extern Elf32_Dyn _DYNAMIC [];
#define elf_addr_t Elf32_Off
#define Elf_Half Elf32_Half
#define Elf_Word Elf32_Word
+#define ELF_GNU_PROPERTY_ALIGN ELF32_GNU_PROPERTY_ALIGN
#else
@@ -42,6 +47,7 @@ extern Elf64_Dyn _DYNAMIC [];
#define elf_addr_t Elf64_Off
#define Elf_Half Elf64_Half
#define Elf_Word Elf64_Word
+#define ELF_GNU_PROPERTY_ALIGN ELF64_GNU_PROPERTY_ALIGN
#endif
@@ -56,4 +62,41 @@ static inline int elf_coredump_extra_notes_write(struct coredump_params *cprm) {
extern int elf_coredump_extra_notes_size(void);
extern int elf_coredump_extra_notes_write(struct coredump_params *cprm);
#endif
+
+/*
+ * NT_GNU_PROPERTY_TYPE_0 header:
+ * Keep this internal until/unless there is an agreed UAPI definition.
+ * pr_type values (GNU_PROPERTY_*) are public and defined in the UAPI header.
+ */
+struct gnu_property {
+ u32 pr_type;
+ u32 pr_datasz;
+};
+
+struct arch_elf_state;
+
+#ifndef CONFIG_ARCH_USE_GNU_PROPERTY
+static inline int arch_parse_elf_property(u32 type, const void *data,
+ size_t datasz, bool compat,
+ struct arch_elf_state *arch)
+{
+ return 0;
+}
+#else
+extern int arch_parse_elf_property(u32 type, const void *data, size_t datasz,
+ bool compat, struct arch_elf_state *arch);
+#endif
+
+#ifdef CONFIG_ARCH_HAVE_ELF_PROT
+int arch_elf_adjust_prot(int prot, const struct arch_elf_state *state,
+ bool has_interp, bool is_interp);
+#else
+static inline int arch_elf_adjust_prot(int prot,
+ const struct arch_elf_state *state,
+ bool has_interp, bool is_interp)
+{
+ return prot;
+}
+#endif
+
#endif /* _LINUX_ELF_H */