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[AVR32] Implement irqflags trace and lockdep support 

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This commit is contained in:
Haavard Skinnemoen 2007-11-26 14:34:57 +01:00
parent 2f0260371f
commit 320516b78b
3 changed files with 43 additions and 19 deletions
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6
arch/avr32/Kconfig
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@ -27,6 +27,12 @@ config GENERIC_HARDIRQS
config STACKTRACE_SUPPORT
def_bool y
config LOCKDEP_SUPPORT
def_bool y
config TRACE_IRQFLAGS_SUPPORT
def_bool y
config HARDIRQS_SW_RESEND
def_bool y

54
arch/avr32/kernel/entry-avr32b.S
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@ -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

2
include/asm-avr32/sysreg.h
View File

@ -93,6 +93,8 @@
#define SYSREG_I3M_SIZE 1
#define SYSREG_EM_OFFSET 21
#define SYSREG_EM_SIZE 1
#define SYSREG_MODE_OFFSET 22
#define SYSREG_MODE_SIZE 3
#define SYSREG_M0_OFFSET 22
#define SYSREG_M0_SIZE 1
#define SYSREG_M1_OFFSET 23