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| author | Chris Metcalf <cmetcalf@tilera.com> | 2012-10-23 21:30:54 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-24 00:23:58 +0400 |
| commit | 6b14e4198c729b748a7f6d22059e6a101d2b241a (patch) | |
| tree | 77668782763f74aec995899e919231e81a71d56a /arch/tile/kernel/intvec_64.S | |
| parent | 530550651fdfd548d25b6bd5ff4607803540508b (diff) | |
| download | linux-6b14e4198c729b748a7f6d22059e6a101d2b241a.tar.xz | |
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/kernel/intvec_64.S')
| -rw-r--r-- | arch/tile/kernel/intvec_64.S | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/arch/tile/kernel/intvec_64.S b/arch/tile/kernel/intvec_64.S index 283efedf67d6..54bc9a6678e8 100644 --- a/arch/tile/kernel/intvec_64.S +++ b/arch/tile/kernel/intvec_64.S @@ -1181,15 +1181,6 @@ STD_ENTRY_LOCAL(bad_intr) panic "Unhandled interrupt %#x: PC %#lx" STD_ENDPROC(bad_intr) -/* Put address of pt_regs in reg and jump. */ -#define PTREGS_SYSCALL(x, reg) \ - STD_ENTRY(_##x); \ - { \ - PTREGS_PTR(reg, PTREGS_OFFSET_BASE); \ - j x \ - }; \ - STD_ENDPROC(_##x) - /* * Special-case sigreturn to not write r0 to the stack on return. * This is technically more efficient, but it also avoids difficulties @@ -1205,14 +1196,12 @@ STD_ENTRY_LOCAL(bad_intr) }; \ STD_ENDPROC(_##x) -PTREGS_SYSCALL(sys_sigaltstack, r2) PTREGS_SYSCALL_SIGRETURN(sys_rt_sigreturn, r0) #ifdef CONFIG_COMPAT -PTREGS_SYSCALL(compat_sys_sigaltstack, r2) PTREGS_SYSCALL_SIGRETURN(compat_sys_rt_sigreturn, r0) #endif -/* Save additional callee-saves to pt_regs, put address in r4 and jump. */ +/* Save additional callee-saves to pt_regs and jump to standard function. */ STD_ENTRY(_sys_clone) push_extra_callee_saves r4 j sys_clone |