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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-18 07:43:27 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-29 03:49:04 +0100 |
| commit | b960f303448969c6cb76b4df9291e9e6213e2b9f (patch) | |
| tree | bfb606dd0cb16673e61213ab4472933e67f39857 | |
| parent | alpha: simplify fork and friends (diff) | |
| download | linux-b960f303448969c6cb76b4df9291e9e6213e2b9f.tar.xz linux-b960f303448969c6cb76b4df9291e9e6213e2b9f.zip | |
alpha: don't pass useless arguments to do_{,rt_},sigreturn()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/alpha/kernel/entry.S | 4 | ||||
| -rw-r--r-- | arch/alpha/kernel/signal.c | 16 |
2 files changed, 8 insertions, 12 deletions
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S index cc6d34e9e2ea..c245de65c61b 100644 --- a/arch/alpha/kernel/entry.S +++ b/arch/alpha/kernel/entry.S @@ -658,8 +658,6 @@ sys_sigreturn: .prologue 0 lda $9, ret_from_straced cmpult $26, $9, $9 - mov $sp, $17 - lda $18, -SWITCH_STACK_SIZE($sp) lda $sp, -SWITCH_STACK_SIZE($sp) jsr $26, do_sigreturn bne $9, 1f @@ -675,8 +673,6 @@ sys_rt_sigreturn: .prologue 0 lda $9, ret_from_straced cmpult $26, $9, $9 - mov $sp, $17 - lda $18, -SWITCH_STACK_SIZE($sp) lda $sp, -SWITCH_STACK_SIZE($sp) jsr $26, do_rt_sigreturn bne $9, 1f diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c index 32575f85507d..336393c9c11f 100644 --- a/arch/alpha/kernel/signal.c +++ b/arch/alpha/kernel/signal.c @@ -160,10 +160,10 @@ extern char compile_time_assert #define INSN_CALLSYS 0x00000083 static long -restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, - struct switch_stack *sw) +restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs) { unsigned long usp; + struct switch_stack *sw = (struct switch_stack *)regs - 1; long i, err = __get_user(regs->pc, &sc->sc_pc); current_thread_info()->restart_block.fn = do_no_restart_syscall; @@ -215,9 +215,9 @@ restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, registers and transfer control from userland. */ asmlinkage void -do_sigreturn(struct sigcontext __user *sc, struct pt_regs *regs, - struct switch_stack *sw) +do_sigreturn(struct sigcontext __user *sc) { + struct pt_regs *regs = current_pt_regs(); sigset_t set; /* Verify that it's a good sigcontext before using it */ @@ -228,7 +228,7 @@ do_sigreturn(struct sigcontext __user *sc, struct pt_regs *regs, set_current_blocked(&set); - if (restore_sigcontext(sc, regs, sw)) + if (restore_sigcontext(sc, regs)) goto give_sigsegv; /* Send SIGTRAP if we're single-stepping: */ @@ -249,9 +249,9 @@ give_sigsegv: } asmlinkage void -do_rt_sigreturn(struct rt_sigframe __user *frame, struct pt_regs *regs, - struct switch_stack *sw) +do_rt_sigreturn(struct rt_sigframe __user *frame) { + struct pt_regs *regs = current_pt_regs(); sigset_t set; /* Verify that it's a good ucontext_t before using it */ @@ -262,7 +262,7 @@ do_rt_sigreturn(struct rt_sigframe __user *frame, struct pt_regs *regs, set_current_blocked(&set); - if (restore_sigcontext(&frame->uc.uc_mcontext, regs, sw)) + if (restore_sigcontext(&frame->uc.uc_mcontext, regs)) goto give_sigsegv; /* Send SIGTRAP if we're single-stepping: */ |