[PATCH] Fill in ELF OSABI in ELF headers

This fills in the ELF EI_OSABI field.  This doesn't matter for most
architectures, but PA-RISC uses the Linux flavour of the ABI (since HPUX
uses the None flavour).

Patch by Randolph Chung.

arch/mips/kernel/irixelf.c

@@ -1088,6 +1088,7 @@ static int irix_core_dump(long signr, struct pt_regs * regs, struct file *file)
 	elf.e_ident[EI_CLASS] = ELFCLASS32;
 	elf.e_ident[EI_DATA] = ELFDATA2LSB;
 	elf.e_ident[EI_VERSION] = EV_CURRENT;
+	elf.e_ident[EI_OSABI] = ELF_OSABI;
 	memset(elf.e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
 
 	elf.e_type = ET_CORE;

fs/binfmt_elf.c

@@ -1023,6 +1023,7 @@ static inline void fill_elf_header(struct elfhdr *elf, int segs)
 	elf->e_ident[EI_CLASS] = ELF_CLASS;
 	elf->e_ident[EI_DATA] = ELF_DATA;
 	elf->e_ident[EI_VERSION] = EV_CURRENT;
+	elf->e_ident[EI_OSABI] = ELF_OSABI;
 	memset(elf->e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
 
 	elf->e_type = ET_CORE;

fs/proc/kcore.c

@@ -175,6 +175,7 @@ static void elf_kcore_store_hdr(char *bufp, int nphdr, int dataoff)
 	elf->e_ident[EI_CLASS]	= ELF_CLASS;
 	elf->e_ident[EI_DATA]	= ELF_DATA;
 	elf->e_ident[EI_VERSION]= EV_CURRENT;
+	elf->e_ident[EI_OSABI] = ELF_OSABI;
 	memset(elf->e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
 	elf->e_type	= ET_CORE;
 	elf->e_machine	= ELF_ARCH;

include/linux/elf.h

@@ -360,7 +360,8 @@ typedef struct elf64_shdr {
 #define	EI_CLASS	4
 #define	EI_DATA		5
 #define	EI_VERSION	6
-#define	EI_PAD		7
+#define	EI_OSABI	7
+#define	EI_PAD		8
 
 #define	ELFMAG0		0x7f		/* EI_MAG */
 #define	ELFMAG1		'E'
@@ -382,6 +383,13 @@ typedef struct elf64_shdr {
 #define EV_CURRENT	1
 #define EV_NUM		2
 
+#define ELFOSABI_NONE	0
+#define ELFOSABI_LINUX	3
+
+#ifndef ELF_OSABI
+#define ELF_OSABI ELFOSABI_NONE
+#endif
+
 /* Notes used in ET_CORE */
 #define NT_PRSTATUS	1
 #define NT_PRFPREG	2