From: Tiejun Chen <tiejun.chen@windriver.com>
To: <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
jason.wessel@windriver.com
Subject: [v1][PATCH 2/6] powerpc/book3e: store critical/machine/debug exception thread info
Date: Thu, 20 Dec 2012 17:08:26 +0800 [thread overview]
Message-ID: <1355994510-11934-3-git-send-email-tiejun.chen@windriver.com> (raw)
In-Reply-To: <1355994510-11934-1-git-send-email-tiejun.chen@windriver.com>
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@windriver.com>
---
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 376e3d1..9a99cba 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -58,6 +58,18 @@
std r10,PACA_##level##_STACK(r13);
#endif
+/* Store something to exception thread info */
+#define BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(type) \
+ ld r14,PACA_EX##type+EX_R1(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 */ \
@@ -95,6 +107,7 @@
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
@@ -105,6 +118,7 @@
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
@@ -115,6 +129,7 @@
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
next prev parent reply other threads:[~2012-12-20 9:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-20 9:08 [v1][PATCH 0/6] powerpc/book3e: make kgdb to work well Tiejun Chen
2012-12-20 9:08 ` [v1][PATCH 1/6] powerpc/book3e: load critical/machine/debug exception stack Tiejun Chen
2012-12-20 9:08 ` Tiejun Chen [this message]
2012-12-20 9:08 ` [v1][PATCH 3/6] book3e/kgdb: update thread's dbcr0 Tiejun Chen
2012-12-20 18:41 ` Kumar Gala
2012-12-21 2:02 ` tiejun.chen
2012-12-20 9:08 ` [v1][PATCH 4/6] book3e/kgdb: Fix a single stgep case of lazy IRQ Tiejun Chen
2012-12-20 9:08 ` [v1][PATCH 5/6] powerpc/book3e: support kgdb for kernel space Tiejun Chen
2012-12-20 9:08 ` [v1][PATCH 6/6] kgdb/kgdbts: support ppc64 Tiejun Chen
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