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microblaze: Remove saving and restoring before calling signal code

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Saving is done in SAVE_STATE macros that's why another save discard
previous saved value.

This change has no effect to normal programs because they ends in any exception
and they are killed. On the other side has effect on debugging.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2009-11-13 08:26:49 +01:00
parent 5dd48a235c
commit f7816e284b
1 changed files with 0 additions and 4 deletions
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arch/microblaze/kernel/entry.S
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@ -711,15 +711,11 @@ C_ENTRY(ret_from_exc):
* (in a possibly modified form) after do_signal returns.
* store return registers separately because this macros is use
* for others exceptions */
swi r3, r1, PTO + PT_R3;
swi r4, r1, PTO + PT_R4;
la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */
add r6, r0, r0; /* Arg 2: sigset_t *oldset */
addi r7, r0, 0; /* Arg 3: int in_syscall */
bralid r15, do_signal; /* Handle any signals */
nop;
lwi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
lwi r4, r1, PTO+PT_R4;
/* Finally, return to user state. */
1: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */