Commit 01e31dba authored by Roland McGrath's avatar Roland McGrath Committed by Paul Mackerras
Browse files

[POWERPC] Switch to generic compat_binfmt_elf code 



This switches the CONFIG_PPC64 support for 32-bit ELF to use the
generic fs/compat_binfmt_elf.c implementation instead of our own
binfmt_elf32.c.  Since so much is the same between 32/64, there is
only one macro we have to define to make the generic support work out
of the box.

Signed-off-by: default avatarRoland McGrath <roland@redhat.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 81970387

arch/powerpc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -97,6 +97,7 @@ config EARLY_PRINTK 
config COMPAT

	bool

	default y if PPC64

	select COMPAT_BINFMT_ELF



config SYSVIPC_COMPAT

	bool

arch/powerpc/kernel/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -17,7 +17,7 @@ obj-y := semaphore.o cputable.o ptrace.o syscalls.o \ 
				   init_task.o process.o systbl.o idle.o \

				   signal.o

obj-y				+= vdso32/

obj-$(CONFIG_PPC64)		+= setup_64.o binfmt_elf32.o sys_ppc32.o \

obj-$(CONFIG_PPC64)		+= setup_64.o sys_ppc32.o \

				   signal_64.o ptrace32.o \

				   paca.o cpu_setup_ppc970.o \

				   cpu_setup_pa6t.o \

arch/powerpc/kernel/binfmt_elf32.c

deleted100644 → 0
+0 −69
Original line number Diff line number Diff line 
/*

 * binfmt_elf32.c: Support 32-bit PPC ELF binaries on Power3 and followons.

 * based on the SPARC64 version.

 * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller	(davem@redhat.com)

 * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek	(jj@ultra.linux.cz)

 *

 * Copyright (C) 2000,2001 Ken Aaker (kdaaker@rchland.vnet.ibm.com), IBM Corp

 * Copyright (C) 2001 Anton Blanchard (anton@au.ibm.com), IBM

 *

 * 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.

 */



#include <asm/processor.h>

#include <linux/module.h>

#include <linux/compat.h>

#include <linux/elfcore-compat.h>



#undef	ELF_ARCH

#undef	ELF_CLASS

#define ELF_CLASS	ELFCLASS32

#define ELF_ARCH	EM_PPC



#undef	elfhdr

#undef	elf_phdr

#undef	elf_note

#undef	elf_addr_t

#define elfhdr		elf32_hdr

#define elf_phdr	elf32_phdr

#define elf_note	elf32_note

#define elf_addr_t	Elf32_Off



#define elf_prstatus	compat_elf_prstatus

#define elf_prpsinfo	compat_elf_prpsinfo



#define elf_core_copy_regs compat_elf_core_copy_regs

static inline void compat_elf_core_copy_regs(compat_elf_gregset_t *elf_regs,

					     struct pt_regs *regs)

{

	PPC_ELF_CORE_COPY_REGS((*elf_regs), regs);

}



#define elf_core_copy_task_regs compat_elf_core_copy_task_regs

static int compat_elf_core_copy_task_regs(struct task_struct *tsk,

					  compat_elf_gregset_t *elf_regs)

{

	struct pt_regs *regs = tsk->thread.regs;

	if (regs)

		compat_elf_core_copy_regs(elf_regs, regs);

	return 1;

}



#include <linux/time.h>



#undef cputime_to_timeval

#define cputime_to_timeval cputime_to_compat_timeval

static __inline__ void

cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)

{

	unsigned long jiffies = cputime_to_jiffies(cputime);

	value->tv_usec = (jiffies % HZ) * (1000000L / HZ);

	value->tv_sec = jiffies / HZ;

}



#define init_elf_binfmt init_elf32_binfmt



#include "../../../fs/binfmt_elf.c"

include/asm-powerpc/elf.h

+1 −0
Original line number Diff line number Diff line
@@ -165,6 +165,7 @@ typedef elf_vrreg_t elf_vrregset_t32[ELF_NVRREG32]; 
 * This is used to ensure we don't load something for the wrong architecture.

 */

#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)

#define compat_elf_check_arch(x)	((x)->e_machine == EM_PPC)



#define USE_ELF_CORE_DUMP

#define CORE_DUMP_USE_REGSET

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