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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-09-26 23:28:00 (GMT) |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-14 23:26:53 (GMT) |
| commit | 2f12af35a988082700373acdebe049dfebaf49b6 (patch) | |
| tree | 884f364fe18dd47a86bb725afd1cc54ab67ffb97 | |
| parent | 5230429ab1c20c348e17069230c24db8a6b53ca3 (diff) | |
| download | linux-2f12af35a988082700373acdebe049dfebaf49b6.tar.xz | |
sparc64: switch to generic kernel_execve()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/sparc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sparc_64.c | 22 | ||||
| -rw-r--r-- | arch/sparc/kernel/syscalls.S | 10 |
3 files changed, 6 insertions, 27 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index ab8bd62..e47eb32 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -75,6 +75,7 @@ config SPARC64 select HAVE_C_RECORDMCOUNT select NO_BOOTMEM select GENERIC_KERNEL_THREAD + select GENERIC_KERNEL_EXECVE config ARCH_DEFCONFIG string diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 11c6c96..adfe60e 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -729,25 +729,3 @@ SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act, return ret; } - -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) -{ - long __res; - register long __g1 __asm__ ("g1") = __NR_execve; - register long __o0 __asm__ ("o0") = (long)(filename); - register long __o1 __asm__ ("o1") = (long)(argv); - register long __o2 __asm__ ("o2") = (long)(envp); - asm volatile ("t 0x6d\n\t" - "sub %%g0, %%o0, %0\n\t" - "movcc %%xcc, %%o0, %0\n\t" - : "=r" (__res), "=&r" (__o0) - : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) - : "cc"); - return __res; -} diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S index 624f341..f72c124 100644 --- a/arch/sparc/kernel/syscalls.S +++ b/arch/sparc/kernel/syscalls.S @@ -115,13 +115,13 @@ ret_from_syscall: call schedule_tail mov %g7, %o0 ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0 - brnz,a,pt %o0, ret_sys_call + brnz,pt %o0, ret_sys_call ldx [%g6 + TI_FLAGS], %l0 - ldx [%sp + PTREGS_OFF + PT_V9_G1], %l0 - call %l0 + ldx [%sp + PTREGS_OFF + PT_V9_G1], %l1 + call %l1 ldx [%sp + PTREGS_OFF + PT_V9_G2], %o0 - call do_exit ! will not return - mov 0,%o0 + ba,pt %xcc, ret_sys_call + mov 0, %o0 .globl sparc_exit .type sparc_exit,#function |