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authorAl Viro <viro@zeniv.linux.org.uk>2012-10-14 23:53:04 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-19 22:28:40 +0400
commit71b4ecc3d8056b2ed5cbc0d77af13fed38bcac49 (patch)
treef0d90a94eeda0ff445637fd70c61ad3484adc0c6 /arch/ia64
parent54d496c3915a10b5e46c5dd9de1a6d301ceb32bd (diff)
downloadlinux-71b4ecc3d8056b2ed5cbc0d77af13fed38bcac49.tar.xz
ia64: switch to generic sys_execve()
Acked-by: Tony Luck <tony.luck@intel.com> Tested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/include/asm/unistd.h1
-rw-r--r--arch/ia64/kernel/entry.S4
-rw-r--r--arch/ia64/kernel/process.c19
3 files changed, 2 insertions, 22 deletions
diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h
index 8b3ff2f5b861..1574bca86138 100644
--- a/arch/ia64/include/asm/unistd.h
+++ b/arch/ia64/include/asm/unistd.h
@@ -29,6 +29,7 @@
#define __ARCH_WANT_SYS_RT_SIGACTION
#define __ARCH_WANT_SYS_RT_SIGSUSPEND
+#define __ARCH_WANT_SYS_EXECVE
#if !defined(__ASSEMBLY__) && !defined(ASSEMBLER)
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 0dea684e1905..940a67263629 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -61,14 +61,13 @@ ENTRY(ia64_execve)
* Allocate 8 input registers since ptrace() may clobber them
*/
.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
- alloc loc1=ar.pfs,8,2,4,0
+ alloc loc1=ar.pfs,8,2,3,0
mov loc0=rp
.body
mov out0=in0 // filename
;; // stop bit between alloc and call
mov out1=in1 // argv
mov out2=in2 // envp
- add out3=16,sp // regs
br.call.sptk.many rp=sys_execve
.ret0:
cmp4.ge p6,p7=r8,r0
@@ -76,7 +75,6 @@ ENTRY(ia64_execve)
sxt4 r8=r8 // return 64-bit result
;;
stf.spill [sp]=f0
-(p6) cmp.ne pKStk,pUStk=r0,r0 // a successful execve() lands us in user-mode...
mov rp=loc0
(p6) mov ar.pfs=r0 // clear ar.pfs on success
(p7) br.ret.sptk.many rp
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 37686dbfd264..25543a295ad9 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -617,25 +617,6 @@ dump_fpu (struct pt_regs *pt, elf_fpregset_t dst)
return 1; /* f0-f31 are always valid so we always return 1 */
}
-long
-sys_execve (const char __user *filename,
- const char __user *const __user *argv,
- const char __user *const __user *envp,
- struct pt_regs *regs)
-{
- struct filename *fname;
- int error;
-
- fname = getname(filename);
- error = PTR_ERR(fname);
- if (IS_ERR(fname))
- goto out;
- error = do_execve(fname->name, argv, envp, regs);
- putname(fname);
-out:
- return error;
-}
-
/*
* Flush thread state. This is called when a thread does an execve().
*/