microblaze: clean up signal handling

When legacy signal handling is disabled, the
arch/microblaze/kernel/signal.c implementation can
be much simpler, as most of it is handled generically
from kernel/signal.c.

This is also a prerequisite for using the generic
asm/unistd.h, which does not provide __NR_sigreturn,
because this macro is referenced by the current signal.c
implementation.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 0 insertions, 23 deletions

diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index 91a0e7b185dd..ea7107652d8d 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -449,17 +449,6 @@ C_ENTRY(sys_execve_wrapper):
         brid    sys_execve;     /* Do real work (tail-call).*/
         nop;
 
-C_ENTRY(sys_sigsuspend_wrapper):
-        swi     r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
-        swi     r4, r1, PTO+PT_R4;
-        la      r6, r1, PTO;            /* add user context as 2nd arg */
-        bralid  r15, sys_sigsuspend; /* Do real work.*/
-        nop;
-        lwi     r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
-        lwi     r4, r1, PTO+PT_R4;
-        bri ret_from_trap /* fall through will not work here due to align */
-        nop;
-
 C_ENTRY(sys_rt_sigsuspend_wrapper):
         swi     r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
         swi     r4, r1, PTO+PT_R4;
@@ -471,18 +460,6 @@ C_ENTRY(sys_rt_sigsuspend_wrapper):
         bri ret_from_trap /* fall through will not work here due to align */
         nop;
 
-
-C_ENTRY(sys_sigreturn_wrapper):
-        swi     r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
-        swi     r4, r1, PTO+PT_R4;
-        la      r5, r1, PTO;            /* add user context as 1st arg */
-        brlid   r15, sys_sigreturn;     /* Do real work.*/
-        nop;
-        lwi     r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
-        lwi     r4, r1, PTO+PT_R4;
-        bri ret_from_trap /* fall through will not work here due to align */
-        nop;
-
 C_ENTRY(sys_rt_sigreturn_wrapper):
         swi     r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
         swi     r4, r1, PTO+PT_R4;