[v4][PATCH 2/7] powerpc/book3e: store critical/machine/debug exception thread info

From: Tiejun Chen
Date: Mon Mar 11 2013 - 07:04:15 EST


We need to store thread info to these exception thread info like something
we already did for PPC32.

Signed-off-by: Tiejun Chen <tiejun.chen@xxxxxxxxxxxxx>
---
arch/powerpc/kernel/exceptions-64e.S | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 7fd6af0..7df9a1f 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -67,6 +67,18 @@
std r10,PACA_##level##_STACK(r13);
#endif

+/* Store something to exception thread info */
+#define BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(type) \
+ ld r14,PACAKSAVE(r13); \
+ CURRENT_THREAD_INFO(r14, r14); \
+ CURRENT_THREAD_INFO(r15, r1); \
+ ld r10,TI_FLAGS(r14); \
+ std r10,TI_FLAGS(r15); \
+ ld r10,TI_PREEMPT(r14); \
+ std r10,TI_PREEMPT(r15); \
+ ld r10,TI_TASK(r14); \
+ std r10,TI_TASK(r15);
+
/* Exception prolog code for all exceptions */
#define EXCEPTION_PROLOG(n, intnum, type, addition) \
mtspr SPRN_SPRG_##type##_SCRATCH,r13; /* get spare registers */ \
@@ -104,6 +116,7 @@
BOOK3E_LOAD_EXC_LEVEL_STACK(CRIT); \
ld r1,PACA_CRIT_STACK(r13); \
subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
+ BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(CRIT); \
1:
#define SPRN_CRIT_SRR0 SPRN_CSRR0
#define SPRN_CRIT_SRR1 SPRN_CSRR1
@@ -114,6 +127,7 @@
BOOK3E_LOAD_EXC_LEVEL_STACK(DBG); \
ld r1,PACA_DBG_STACK(r13); \
subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
+ BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(DBG); \
1:
#define SPRN_DBG_SRR0 SPRN_DSRR0
#define SPRN_DBG_SRR1 SPRN_DSRR1
@@ -124,6 +138,7 @@
BOOK3E_LOAD_EXC_LEVEL_STACK(MC); \
ld r1,PACA_MC_STACK(r13); \
subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
+ BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(MC); \
1:
#define SPRN_MC_SRR0 SPRN_MCSRR0
#define SPRN_MC_SRR1 SPRN_MCSRR1
--
1.7.9.5

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