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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-04-27 16:01:40 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-04-27 16:01:42 +0200 |
| commit | 03ff9a235a0602724fc54916469b6e0939c62c9b (patch) | |
| tree | 86ab2236897eb59542be2ccd667d6ca221153a44 /arch/s390/kernel/compat_signal.c | |
| parent | [S390] cio: Unregister ccw devices directly. (diff) | |
| download | linux-03ff9a235a0602724fc54916469b6e0939c62c9b.tar.xz linux-03ff9a235a0602724fc54916469b6e0939c62c9b.zip | |
[S390] System call cleanup.
Remove system call glue for sys_clone, sys_fork, sys_vfork, sys_execve,
sys_sigreturn, sys_rt_sigreturn and sys_sigaltstack. Call do_execve from
kernel_execve directly, move pt_regs to the right place and branch to
sysc_return to start the user space program. This removes the last
in-kernel system call.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/compat_signal.c')
| -rw-r--r-- | arch/s390/kernel/compat_signal.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index 887a9881d0d0..80a54a0149ab 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -255,9 +255,9 @@ sys32_rt_sigaction(int sig, const struct sigaction32 __user *act, } asmlinkage long -sys32_sigaltstack(const stack_t32 __user *uss, stack_t32 __user *uoss, - struct pt_regs *regs) +sys32_sigaltstack(const stack_t32 __user *uss, stack_t32 __user *uoss) { + struct pt_regs *regs = task_pt_regs(current); stack_t kss, koss; unsigned long ss_sp; int ret, err = 0; @@ -344,8 +344,9 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs) return 0; } -asmlinkage long sys32_sigreturn(struct pt_regs *regs) +asmlinkage long sys32_sigreturn(void) { + struct pt_regs *regs = task_pt_regs(current); sigframe32 __user *frame = (sigframe32 __user *)regs->gprs[15]; sigset_t set; @@ -370,8 +371,9 @@ badframe: return 0; } -asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs) +asmlinkage long sys32_rt_sigreturn(void) { + struct pt_regs *regs = task_pt_regs(current); rt_sigframe32 __user *frame = (rt_sigframe32 __user *)regs->gprs[15]; sigset_t set; stack_t st; @@ -407,8 +409,8 @@ asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs) return regs->gprs[2]; badframe: - force_sig(SIGSEGV, current); - return 0; + force_sig(SIGSEGV, current); + return 0; } /* |