microblaze: Save and restore r3/r4 in SAVE/RESTORE_REGS macros

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Save and restore R3/R4 registers in macros. This change
help to cleanup entry.S.

In ret_from_trap function we are saving returning value from
syscall to pt_regs on stack that's why we don't need to save and
restore these values before kernel functions (schedule, do_signal).

Signed-off-by: Michal Simek <monstr@monstr.eu>

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Michal Simek 2010-06-22 13:27:43 +02:00

parent a4a94dbf20

commit 36f6095419

1 changed files with 8 additions and 40 deletions

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arch/microblaze/kernel/entry.S

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