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| author | Michal Simek <monstr@monstr.eu> | 2010-02-22 13:24:43 +0100 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2010-03-11 14:25:54 +0100 |
| commit | 8633bebc63ba5752254925f8b49a19102df1a0ff (patch) | |
| tree | 3b86a4b83255a33f6a12f00974e440c414c9b284 /arch/microblaze/kernel | |
| parent | microblaze: Simplify entry.S - save/restore r3/r4 - ret_from_trap (diff) | |
| download | linux-8633bebc63ba5752254925f8b49a19102df1a0ff.tar.xz linux-8633bebc63ba5752254925f8b49a19102df1a0ff.zip | |
microblaze: Save current task directly
Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/kernel')
| -rw-r--r-- | arch/microblaze/kernel/entry.S | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S index 772fe7415f82..cc9885d441d5 100644 --- a/arch/microblaze/kernel/entry.S +++ b/arch/microblaze/kernel/entry.S @@ -425,8 +425,7 @@ C_ENTRY(ret_from_trap): lwi r4, r1, PTO + PT_R4; swi r0, r0, PER_CPU(KM); /* Now officially in user state. */ - add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ - swi r11, r0, PER_CPU(CURRENT_SAVE); /* save current */ + swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); /* save current */ VM_OFF; tophys(r1,r1); RESTORE_REGS; @@ -700,8 +699,7 @@ C_ENTRY(ret_from_exc): /* Finally, return to user state. */ 1: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */ - add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ - swi r11, r0, PER_CPU(CURRENT_SAVE); /* save current */ + swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); /* save current */ VM_OFF; tophys(r1,r1); @@ -828,8 +826,7 @@ no_intr_resched: /* Disable interrupts, we are now committed to the state restore */ disable_irq swi r0, r0, PER_CPU(KM); /* MS: Now officially in user state. */ - add r11, r0, CURRENT_TASK; - swi r11, r0, PER_CPU(CURRENT_SAVE); + swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); VM_OFF; tophys(r1,r1); lwi r3, r1, PTO + PT_R3; /* MS: restore saved r3, r4 registers */ @@ -979,8 +976,7 @@ dbtrap_call: rtbd r11, 0; /* Finally, return to user state. */ 1: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */ - add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ - swi r11, r0, PER_CPU(CURRENT_SAVE); /* save current */ + swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); /* save current */ VM_OFF; tophys(r1,r1); |