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[AVR32] Implement irqflags trace and lockdep support
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This commit is contained in:
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2f0260371f
commit
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@ -27,6 +27,12 @@ config GENERIC_HARDIRQS
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config STACKTRACE_SUPPORT
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def_bool y
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config LOCKDEP_SUPPORT
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def_bool y
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config TRACE_IRQFLAGS_SUPPORT
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def_bool y
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config HARDIRQS_SW_RESEND
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def_bool y
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@ -527,15 +527,14 @@ fault_exit_work:
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/* If we get a debug trap from privileged context we end up here */
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handle_debug_priv:
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/* Fix up LR and SP in regs. r11 contains the mode we came from */
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mfsr r8, SYSREG_SR
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mov r9, r8
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andh r8, hi(~MODE_MASK)
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or r8, r11
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mtsr SYSREG_SR, r8
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/* Fix up LR and SP in regs. r1 contains the mode we came from */
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mfsr r2, SYSREG_SR
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mov r3, r2
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bfins r2, r1, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE
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mtsr SYSREG_SR, r2
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sub pc, -2
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stdsp sp[REG_LR], lr
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mtsr SYSREG_SR, r9
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mtsr SYSREG_SR, r3
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sub pc, -2
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sub r10, sp, -FRAME_SIZE_FULL
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stdsp sp[REG_SP], r10
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@ -547,15 +546,19 @@ handle_debug_priv:
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popm r10, r11
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mtsr SYSREG_RAR_DBG, r10
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mtsr SYSREG_RSR_DBG, r11
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mfsr r8, SYSREG_SR
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mov r9, r8
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andh r8, hi(~MODE_MASK)
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andh r11, hi(MODE_MASK)
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or r8, r11
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mtsr SYSREG_SR, r8
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#ifdef CONFIG_TRACE_IRQFLAGS
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bld r11, SYSREG_GM_OFFSET
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brcc 1f
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rcall trace_hardirqs_on
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1:
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#endif
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mfsr r2, SYSREG_SR
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mov r3, r2
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bfins r2, r1, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE
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mtsr SYSREG_SR, r2
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sub pc, -2
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popm lr
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mtsr SYSREG_SR, r9
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mtsr SYSREG_SR, r3
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sub pc, -2
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sub sp, -4 /* skip SP */
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popm r0-r12
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@ -572,11 +575,14 @@ handle_debug_priv:
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handle_debug:
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sub sp, 4 /* r12_orig */
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stmts --sp, r0-lr
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mfsr r10, SYSREG_RAR_DBG
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mfsr r11, SYSREG_RSR_DBG
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mfsr r0, SYSREG_RAR_DBG
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mfsr r1, SYSREG_RSR_DBG
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#ifdef CONFIG_TRACE_IRQFLAGS
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rcall trace_hardirqs_off
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#endif
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unmask_exceptions
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pushm r10,r11
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andh r11, (MODE_MASK >> 16), COH
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stm --sp, r0, r1
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bfextu r1, r1, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE
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brne handle_debug_priv
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mov r12, sp
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@ -591,6 +597,12 @@ debug_restore_all:
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mask_exceptions
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mtsr SYSREG_RSR_DBG, r11
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mtsr SYSREG_RAR_DBG, r10
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#ifdef CONFIG_TRACE_IRQFLAGS
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bld r11, SYSREG_GM_OFFSET
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brcc 1f
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rcall trace_hardirqs_on
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1:
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#endif
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ldmts sp++, r0-lr
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sub sp, -4
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retd
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@ -675,7 +687,11 @@ irq_level\level:
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andl r1, _TIF_WORK_MASK, COH
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brne irq_exit_work
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1: popm r8-r9
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1:
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#ifdef CONFIG_TRACE_IRQFLAGS
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rcall trace_hardirqs_on
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#endif
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popm r8-r9
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mtsr rar_int\level, r8
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mtsr rsr_int\level, r9
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ldmts sp++,r0-lr
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@ -93,6 +93,8 @@
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#define SYSREG_I3M_SIZE 1
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#define SYSREG_EM_OFFSET 21
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#define SYSREG_EM_SIZE 1
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#define SYSREG_MODE_OFFSET 22
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#define SYSREG_MODE_SIZE 3
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#define SYSREG_M0_OFFSET 22
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#define SYSREG_M0_SIZE 1
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#define SYSREG_M1_OFFSET 23
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