diff options
| author | Chris Metcalf <cmetcalf@tilera.com> | 2012-10-23 13:30:54 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-23 16:23:58 -0400 |
| commit | 6b14e4198c729b748a7f6d22059e6a101d2b241a (patch) | |
| tree | 77668782763f74aec995899e919231e81a71d56a /arch/tile/include/asm/syscalls.h | |
| parent | 530550651fdfd548d25b6bd5ff4607803540508b (diff) | |
arch/tile: eliminate pt_regs trampolines for syscalls
Using the new current_pt_regs() model, we can remove some trampolines
from assembly code and call directly to the C syscall implementations.
rt_sigreturn() and clone() still need some assembly wrapping, but no
longer are passed a pt_regs pointer. sigaltstack() and the
tilepro-specific cmpxchg_badaddr() syscalls are now just straight C.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/include/asm/syscalls.h')
| -rw-r--r-- | arch/tile/include/asm/syscalls.h | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/tile/include/asm/syscalls.h b/arch/tile/include/asm/syscalls.h index 0d52992f8e05..369696d63e7b 100644 --- a/arch/tile/include/asm/syscalls.h +++ b/arch/tile/include/asm/syscalls.h @@ -51,8 +51,7 @@ long sys_cacheflush(unsigned long addr, unsigned long len, #ifndef __tilegx__ /* mm/fault.c */ -long sys_cmpxchg_badaddr(unsigned long address, struct pt_regs *); -long _sys_cmpxchg_badaddr(unsigned long address); +long sys_cmpxchg_badaddr(unsigned long address); #endif #ifdef CONFIG_COMPAT @@ -63,15 +62,23 @@ long sys_truncate64(const char __user *path, loff_t length); long sys_ftruncate64(unsigned int fd, loff_t length); #endif -/* These are the intvec*.S trampolines. */ -long _sys_sigaltstack(const stack_t __user *, stack_t __user *); -long _sys_rt_sigreturn(void); -long _sys_clone(unsigned long clone_flags, unsigned long newsp, +/* Provide versions of standard syscalls that use current_pt_regs(). */ +long sys_clone(unsigned long clone_flags, unsigned long newsp, void __user *parent_tid, void __user *child_tid); long sys_execve(const char __user *filename, const char __user *const __user *argv, const char __user *const __user *envp); +long sys_rt_sigreturn(void); +long sys_sigaltstack(const stack_t __user *, stack_t __user *); +#define sys_clone sys_clone #define sys_execve sys_execve +#define sys_rt_sigreturn sys_rt_sigreturn +#define sys_sigaltstack sys_sigaltstack + +/* These are the intvec*.S trampolines. */ +long _sys_rt_sigreturn(void); +long _sys_clone(unsigned long clone_flags, unsigned long newsp, + void __user *parent_tid, void __user *child_tid); #include <asm-generic/syscalls.h> |