linux-kernel - [PATCH 37/37] kgdbts,sh: Add in breakpoint pc offset for superh

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Message-Id: <1261604584-5796-5-git-send-email-jason.wessel@windriver.com>
Date:	Wed, 23 Dec 2009 15:43:04 -0600
From:	Jason Wessel <jason.wessel@...driver.com>
To:	linux-kernel@...r.kernel.org
Cc:	kgdb-bugreport@...ts.sourceforge.net, kdb@....sgi.com,
	mingo@...e.hu, Jason Wessel <jason.wessel@...driver.com>,
	Paul Mundt <lethal@...ux-sh.org>
Subject: [PATCH 37/37] kgdbts,sh: Add in breakpoint pc offset for superh

The kgdb test suite mimics the behavior of gdb.  For the sh
architecture the pc must be decremented by 2 for software breakpoint.

CC: Paul Mundt <lethal@...ux-sh.org>
Signed-off-by: Jason Wessel <jason.wessel@...driver.com>
---
 drivers/misc/kgdbts.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index fcb6ec1..7245023 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -295,6 +295,10 @@ static int check_and_rewind_pc(char *put_str, char *arg)
 	/* On x86 a breakpoint stop requires it to be decremented */
 	if (addr + 1 == kgdbts_regs.ip)
 		offset = -1;
+#elif defined(CONFIG_SUPERH)
+	/* On SUPERH a breakpoint stop requires it to be decremented */
+	if (addr + 2 == kgdbts_regs.pc)
+		offset = -2;
 #endif
 	if (strcmp(arg, "silent") &&
 		instruction_pointer(&kgdbts_regs) + offset != addr) {
@@ -305,6 +309,8 @@ static int check_and_rewind_pc(char *put_str, char *arg)
 #ifdef CONFIG_X86
 	/* On x86 adjust the instruction pointer if needed */
 	kgdbts_regs.ip += offset;
+#elif defined(CONFIG_SUPERH)
+	kgdbts_regs.pc += offset;
 #endif
 	return 0;
 }
-- 
1.6.4.rc1

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