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| author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2007-11-26 14:34:57 +0100 |
|---|---|---|
| committer | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2007-12-07 14:52:37 +0100 |
| commit | 320516b78bf197fbf7a38ddab09e9dab75741bae (patch) | |
| tree | ceccf2c69890c51beaeffeb8162f190e000166da /arch/avr32/kernel/entry-avr32b.S | |
| parent | [AVR32] Implement stacktrace support (diff) | |
| download | linux-320516b78bf197fbf7a38ddab09e9dab75741bae.tar.xz linux-320516b78bf197fbf7a38ddab09e9dab75741bae.zip | |
[AVR32] Implement irqflags trace and lockdep support
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'arch/avr32/kernel/entry-avr32b.S')
| -rw-r--r-- | arch/avr32/kernel/entry-avr32b.S | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S index ccadfd9b438d..cc2a9b76a344 100644 --- a/arch/avr32/kernel/entry-avr32b.S +++ b/arch/avr32/kernel/entry-avr32b.S @@ -527,15 +527,14 @@ fault_exit_work: /* If we get a debug trap from privileged context we end up here */ handle_debug_priv: - /* Fix up LR and SP in regs. r11 contains the mode we came from */ - mfsr r8, SYSREG_SR - mov r9, r8 - andh r8, hi(~MODE_MASK) - or r8, r11 - mtsr SYSREG_SR, r8 + /* Fix up LR and SP in regs. r1 contains the mode we came from */ + mfsr r2, SYSREG_SR + mov r3, r2 + bfins r2, r1, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE + mtsr SYSREG_SR, r2 sub pc, -2 stdsp sp[REG_LR], lr - mtsr SYSREG_SR, r9 + mtsr SYSREG_SR, r3 sub pc, -2 sub r10, sp, -FRAME_SIZE_FULL stdsp sp[REG_SP], r10 @@ -547,15 +546,19 @@ handle_debug_priv: popm r10, r11 mtsr SYSREG_RAR_DBG, r10 mtsr SYSREG_RSR_DBG, r11 - mfsr r8, SYSREG_SR - mov r9, r8 - andh r8, hi(~MODE_MASK) - andh r11, hi(MODE_MASK) - or r8, r11 - mtsr SYSREG_SR, r8 +#ifdef CONFIG_TRACE_IRQFLAGS + bld r11, SYSREG_GM_OFFSET + brcc 1f + rcall trace_hardirqs_on +1: +#endif + mfsr r2, SYSREG_SR + mov r3, r2 + bfins r2, r1, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE + mtsr SYSREG_SR, r2 sub pc, -2 popm lr - mtsr SYSREG_SR, r9 + mtsr SYSREG_SR, r3 sub pc, -2 sub sp, -4 /* skip SP */ popm r0-r12 @@ -572,11 +575,14 @@ handle_debug_priv: handle_debug: sub sp, 4 /* r12_orig */ stmts --sp, r0-lr - mfsr r10, SYSREG_RAR_DBG - mfsr r11, SYSREG_RSR_DBG + mfsr r0, SYSREG_RAR_DBG + mfsr r1, SYSREG_RSR_DBG +#ifdef CONFIG_TRACE_IRQFLAGS + rcall trace_hardirqs_off +#endif unmask_exceptions - pushm r10,r11 - andh r11, (MODE_MASK >> 16), COH + stm --sp, r0, r1 + bfextu r1, r1, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE brne handle_debug_priv mov r12, sp @@ -591,6 +597,12 @@ debug_restore_all: mask_exceptions mtsr SYSREG_RSR_DBG, r11 mtsr SYSREG_RAR_DBG, r10 +#ifdef CONFIG_TRACE_IRQFLAGS + bld r11, SYSREG_GM_OFFSET + brcc 1f + rcall trace_hardirqs_on +1: +#endif ldmts sp++, r0-lr sub sp, -4 retd @@ -675,7 +687,11 @@ irq_level\level: andl r1, _TIF_WORK_MASK, COH brne irq_exit_work -1: popm r8-r9 +1: +#ifdef CONFIG_TRACE_IRQFLAGS + rcall trace_hardirqs_on +#endif + popm r8-r9 mtsr rar_int\level, r8 mtsr rsr_int\level, r9 ldmts sp++,r0-lr |