alpha: switch to generic fork/vfork/clone

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

1 files changed, 11 insertions, 31 deletions

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index c245de65c61b..f62a994ef126 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -612,44 +612,24 @@ 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.
  */
+
+.macro  fork_like name
         .align  4
-        .globl  sys_fork
-        .ent    sys_fork
-sys_fork:
+        .globl  alpha_\name
+        .ent    alpha_\name
+alpha_\name:
         .prologue 0
         bsr     $1, do_switch_stack
-        bis     $31, SIGCHLD, $16
-        mov     $31, $17
-        mov     $31, $18
-        mov     $31, $19
-        mov     $31, $20
-        jsr     $26, alpha_clone
-fork_out:
+        jsr     $26, sys_\name
         ldq     $26, 56($sp)
         lda     $sp, SWITCH_STACK_SIZE($sp)
         ret
-.end sys_fork
-
-        .align  4
-        .globl  sys_clone
-        .ent    sys_clone
-sys_clone:
-        .prologue 0
-        bsr     $1, do_switch_stack
-        /* $16, $17, $18, $19, $20 come from the user.  */
-        lda     $26, fork_out
-        jsr     $31, alpha_clone
-.end sys_clone
+.end    alpha_\name
+.endm
 
-        .align  4
-        .globl  sys_vfork
-        .ent    sys_vfork
-sys_vfork:
-        .prologue 0
-        bsr     $1, do_switch_stack
-        lda     $26, fork_out
-        jsr     $31, alpha_vfork
-.end sys_vfork
+fork_like fork
+fork_like vfork
+fork_like clone
 
         .align  4
         .globl  sys_sigreturn