#include <asm/cputable.h>
#include <asm/firmware.h>
#include <asm/bug.h>
+#include <asm/ptrace.h>
+#include <asm/irqflags.h>
/*
* System calls.
/* This value is used to mark exception frames on the stack. */
exception_marker:
- .tc ID_72656773_68657265[TC],0x7265677368657265
+ .tc ID_EXC_MARKER[TC],STACK_FRAME_REGS_MARKER
.section ".text"
.align 7
addi r9,r1,STACK_FRAME_OVERHEAD
ld r11,exception_marker@toc(r2)
std r11,-16(r9) /* "regshere" marker */
+#ifdef CONFIG_TRACE_IRQFLAGS
+ bl .trace_hardirqs_on
+ REST_GPR(0,r1)
+ REST_4GPRS(3,r1)
+ REST_2GPRS(7,r1)
+ addi r9,r1,STACK_FRAME_OVERHEAD
+ ld r12,_MSR(r1)
+#endif /* CONFIG_TRACE_IRQFLAGS */
li r10,1
stb r10,PACASOFTIRQEN(r13)
stb r10,PACAHARDIRQEN(r13)
b hardware_interrupt_entry
2:
END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
-#endif
+#endif /* CONFIG_PPC_ISERIES */
mfmsr r11
ori r11,r11,MSR_EE
mtmsrd r11,1
li r3,0
stb r3,PACASOFTIRQEN(r13) /* ensure we are soft-disabled */
+#ifdef CONFIG_TRACE_IRQFLAGS
+ bl .trace_hardirqs_off
+ mfmsr r10
+#endif
ori r10,r10,MSR_EE
mtmsrd r10 /* hard-enable again */
addi r3,r1,STACK_FRAME_OVERHEAD
4:
END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
#endif
- stb r5,PACASOFTIRQEN(r13)
+ TRACE_AND_RESTORE_IRQ(r5);
/* extract EE bit and use it to restore paca->hard_enabled */
ld r3,_MSR(r1)
bne restore
/* here we are preempting the current task */
1:
+#ifdef CONFIG_TRACE_IRQFLAGS
+ bl .trace_hardirqs_on
+ /* Note: we just clobbered r10 which used to contain the previous
+ * MSR before the hard-disabling done by the caller of do_work.
+ * We don't have that value anymore, but it doesn't matter as
+ * we will hard-enable unconditionally, we can just reload the
+ * current MSR into r10
+ */
+ mfmsr r10
+#endif /* CONFIG_TRACE_IRQFLAGS */
li r0,1
stb r0,PACASOFTIRQEN(r13)
stb r0,PACAHARDIRQEN(r13)