[SPARC64]: Make use of the new fs/compat_binfmt_elf.c

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/Kconfig

@@ -380,13 +380,7 @@ config COMPAT
 	bool
 	depends on SPARC32_COMPAT
 	default y
-
-config BINFMT_ELF32
-	bool "Kernel support for 32-bit ELF binaries"
-	depends on SPARC32_COMPAT
-	help
-	  This allows you to run 32-bit Linux/ELF binaries on your Ultra.
-	  Everybody wants this; say Y.
+	select COMPAT_BINFMT_ELF
 
 config BINFMT_AOUT32
 	bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"

arch/sparc64/kernel/Makefile

@@ -21,7 +21,6 @@ obj-$(CONFIG_PCI)	 += ebus.o isa.o pci_common.o \
 obj-$(CONFIG_PCI_MSI)	+= pci_msi.o
 obj-$(CONFIG_SMP)	 += smp.o trampoline.o hvtramp.o
 obj-$(CONFIG_SPARC32_COMPAT) += sys32.o sys_sparc32.o signal32.o
-obj-$(CONFIG_BINFMT_ELF32) += binfmt_elf32.o
 obj-$(CONFIG_BINFMT_AOUT32) += binfmt_aout32.o
 obj-$(CONFIG_MODULES) += module.o
 obj-$(CONFIG_US3_FREQ) += us3_cpufreq.o

arch/sparc64/kernel/binfmt_elf32.c

-/*
- * binfmt_elf32.c: Support 32-bit Sparc ELF binaries on Ultra.
- *
- * Copyright (C) 1995, 1996, 1997, 1998, 2008 David S. Miller (davem@davemloft.net)
- * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek	(jj@ultra.linux.cz)
- */
-
-#define ELF_ARCH		EM_SPARC
-#define ELF_CLASS		ELFCLASS32
-#define ELF_DATA		ELFDATA2MSB;
-
-/* Format is:
- * 	G0 --> G7
- *	O0 --> O7
- *	L0 --> L7
- *	I0 --> I7
- *	PSR, PC, nPC, Y, WIM, TBR
- */
-typedef unsigned int elf_greg_t;
-#define ELF_NGREG 38
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-typedef struct {
-	union {
-		unsigned int	pr_regs[32];
-		unsigned long	pr_dregs[16];
-	} pr_fr;
-	unsigned int __unused;
-	unsigned int	pr_fsr;
-	unsigned char	pr_qcnt;
-	unsigned char	pr_q_entrysize;
-	unsigned char	pr_en;
-	unsigned int	pr_q[64];
-} elf_fpregset_t;
-
-/* UltraSparc extensions.  Still unused, but will be eventually.  */
-typedef struct {
-	unsigned int pr_type;
-	unsigned int pr_align;
-	union {
-		struct {
-			union {
-				unsigned int	pr_regs[32];
-				unsigned long	pr_dregs[16];
-				long double	pr_qregs[8];
-			} pr_xfr;
-		} pr_v8p;
-		unsigned int	pr_xfsr;
-		unsigned int	pr_fprs;
-		unsigned int	pr_xg[8];
-		unsigned int	pr_xo[8];
-		unsigned long	pr_tstate;
-		unsigned int	pr_filler[8];
-	} pr_un;
-} elf_xregset_t;
-
-#define elf_check_arch(x)	(((x)->e_machine == EM_SPARC) || ((x)->e_machine == EM_SPARC32PLUS))
-
-#define ELF_ET_DYN_BASE         0x70000000
-
-
-#include <asm/processor.h>
-#include <linux/module.h>
-#include <linux/elfcore.h>
-#include <linux/compat.h>
-
-#define elf_prstatus elf_prstatus32
-struct elf_prstatus32
-{
-	struct elf_siginfo pr_info;	/* Info associated with signal */
-	short	pr_cursig;		/* Current signal */
-	unsigned int pr_sigpend;	/* Set of pending signals */
-	unsigned int pr_sighold;	/* Set of held signals */
-	pid_t	pr_pid;
-	pid_t	pr_ppid;
-	pid_t	pr_pgrp;
-	pid_t	pr_sid;
-	struct compat_timeval pr_utime;	/* User time */
-	struct compat_timeval pr_stime;	/* System time */
-	struct compat_timeval pr_cutime;	/* Cumulative user time */
-	struct compat_timeval pr_cstime;	/* Cumulative system time */
-	elf_gregset_t pr_reg;	/* GP registers */
-	int pr_fpvalid;		/* True if math co-processor being used.  */
-};
-
-#define elf_prpsinfo elf_prpsinfo32
-struct elf_prpsinfo32
-{
-	char	pr_state;	/* numeric process state */
-	char	pr_sname;	/* char for pr_state */
-	char	pr_zomb;	/* zombie */
-	char	pr_nice;	/* nice val */
-	unsigned int pr_flag;	/* flags */
-	u16	pr_uid;
-	u16	pr_gid;
-	pid_t	pr_pid, pr_ppid, pr_pgrp, pr_sid;
-	/* Lots missing */
-	char	pr_fname[16];	/* filename of executable */
-	char	pr_psargs[ELF_PRARGSZ];	/* initial part of arg list */
-};
-
-#include <linux/highuid.h>
-
-#undef NEW_TO_OLD_UID
-#undef NEW_TO_OLD_GID
-#define NEW_TO_OLD_UID(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
-#define NEW_TO_OLD_GID(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
-
-#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;
-}
-
-#undef start_thread
-#define start_thread start_thread32
-#define init_elf_binfmt init_elf32_binfmt
-
-MODULE_DESCRIPTION("Binary format loader for compatibility with 32bit SparcLinux binaries on the Ultra");
-MODULE_AUTHOR("Eric Youngdale, David S. Miller, Jakub Jelinek");
-
-#undef MODULE_DESCRIPTION
-#undef MODULE_AUTHOR
-
-#include <asm/a.out.h>
-
-#undef TASK_SIZE
-#define TASK_SIZE STACK_TOP32
-
-#include "../../../fs/binfmt_elf.c"

include/asm-sparc64/elf.h

@@ -75,7 +75,6 @@
 /*
  * These are used to set parameters in the core dumps.
  */
-#ifndef ELF_ARCH
 #define ELF_ARCH		EM_SPARCV9
 #define ELF_CLASS		ELFCLASS64
 #define ELF_DATA		ELFDATA2MSB
@@ -100,14 +99,59 @@ typedef struct {
 	unsigned long	pr_gsr;
 	unsigned long	pr_fprs;
 } elf_fpregset_t;
-#endif
+
+/* Format of 32-bit elf_gregset_t is:
+ * 	G0 --> G7
+ *	O0 --> O7
+ *	L0 --> L7
+ *	I0 --> I7
+ *	PSR, PC, nPC, Y, WIM, TBR
+ */
+typedef unsigned int compat_elf_greg_t;
+#define COMPAT_ELF_NGREG 38
+typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
+
+typedef struct {
+	union {
+		unsigned int	pr_regs[32];
+		unsigned long	pr_dregs[16];
+	} pr_fr;
+	unsigned int __unused;
+	unsigned int	pr_fsr;
+	unsigned char	pr_qcnt;
+	unsigned char	pr_q_entrysize;
+	unsigned char	pr_en;
+	unsigned int	pr_q[64];
+} compat_elf_fpregset_t;
+
+/* UltraSparc extensions.  Still unused, but will be eventually.  */
+typedef struct {
+	unsigned int pr_type;
+	unsigned int pr_align;
+	union {
+		struct {
+			union {
+				unsigned int	pr_regs[32];
+				unsigned long	pr_dregs[16];
+				long double	pr_qregs[8];
+			} pr_xfr;
+		} pr_v8p;
+		unsigned int	pr_xfsr;
+		unsigned int	pr_fprs;
+		unsigned int	pr_xg[8];
+		unsigned int	pr_xo[8];
+		unsigned long	pr_tstate;
+		unsigned int	pr_filler[8];
+	} pr_un;
+} elf_xregset_t;
 
 /*
  * This is used to ensure we don't load something for the wrong architecture.
  */
-#ifndef elf_check_arch
-#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)	/* Might be EM_SPARCV9 or EM_SPARC */
-#endif
+#define elf_check_arch(x)		((x)->e_machine == ELF_ARCH)
+#define compat_elf_check_arch(x)	((x)->e_machine == EM_SPARC || \
+					 (x)->e_machine == EM_SPARC32PLUS)
+#define compat_start_thread		start_thread32
 
 #define USE_ELF_CORE_DUMP
 #define ELF_EXEC_PAGESIZE	PAGE_SIZE
@@ -117,9 +161,8 @@ typedef struct {
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-#ifndef ELF_ET_DYN_BASE
-#define ELF_ET_DYN_BASE         0x0000010000000000UL
-#endif
+#define ELF_ET_DYN_BASE		0x0000010000000000UL
+#define COMPAT_ELF_ET_DYN_BASE	0x0000000070000000UL
 
 
 /* This yields a mask that user programs can use to figure out what