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alpha: unify the glue for sigreturn-like syscalls 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2018-08-16 21:03:35 -04:00
parent 060581c158
commit 8a68060cef
1 changed files with 10 additions and 20 deletions
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30
arch/alpha/kernel/entry.S
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@ -791,7 +791,7 @@ ret_from_kernel_thread:
/*
* Special system calls. Most of these are special in that they either
* have to play switch_stack games or in some way use the pt_regs struct.
* have to play switch_stack games.
*/
.macro fork_like name
@ -812,35 +812,25 @@ fork_like fork
fork_like vfork
fork_like clone
.macro sigreturn_like name
.align 4
.globl sys_sigreturn
.ent sys_sigreturn
sys_sigreturn:
.globl sys_\name
.ent sys_\name
sys_\name:
.prologue 0
lda $9, ret_from_straced
cmpult $26, $9, $9
lda $sp, -SWITCH_STACK_SIZE($sp)
jsr $26, do_sigreturn
jsr $26, do_\name
bne $9, 1f
jsr $26, syscall_trace_leave
1: br $1, undo_switch_stack
br ret_from_sys_call
.end sys_sigreturn
.end sys_\name
.endm
.align 4
.globl sys_rt_sigreturn
.ent sys_rt_sigreturn
sys_rt_sigreturn:
.prologue 0
lda $9, ret_from_straced
cmpult $26, $9, $9
lda $sp, -SWITCH_STACK_SIZE($sp)
jsr $26, do_rt_sigreturn
bne $9, 1f
jsr $26, syscall_trace_leave
1: br $1, undo_switch_stack
br ret_from_sys_call
.end sys_rt_sigreturn
sigreturn_like sigreturn
sigreturn_like rt_sigreturn
.align 4
.globl alpha_syscall_zero