alpha: unify the glue for sigreturn-like syscalls

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 21840e7042f342874e3c30159231569c4c45d508..2e09248f8324258305dee38e88d1bec65fda9f00 100644 (file)
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -791,7 +791,7 @@ ret_from_kernel_thread:
 \f
 /*
  * 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