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authorRalf Baechle <ralf@linux-mips.org>2008-10-28 17:38:42 +0000
committerRalf Baechle <ralf@linux-mips.org>2008-10-30 14:44:34 +0000
commitba3049ed4086737dab200b6087138a4b8e06915d (patch)
tree78a665064e6cc288bb34ef20cd543c2feb204838 /arch/mips/include/asm/break.h
parent076c6e4f4d81113615f50e5bc2c569f628bcd54a (diff)
downloadop-kernel-dev-ba3049ed4086737dab200b6087138a4b8e06915d.zip
op-kernel-dev-ba3049ed4086737dab200b6087138a4b8e06915d.tar.gz
MIPS: Switch FPU emulator trap to BREAK instruction.
Arguably using the address error handler has always been ugly. But with processors that handle unaligned loads and stores in hardware the current mechanism ceases to work so switch it to a BREAK instruction and allocate break code 514 to the FPU emulator. Yoichi Yuasa provided a build fix for CONFIG_BUG=n. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Diffstat (limited to 'arch/mips/include/asm/break.h')
-rw-r--r--arch/mips/include/asm/break.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/include/asm/break.h b/arch/mips/include/asm/break.h
index 25b980c..44437ed 100644
--- a/arch/mips/include/asm/break.h
+++ b/arch/mips/include/asm/break.h
@@ -29,6 +29,7 @@
#define _BRK_THREADBP 11 /* For threads, user bp (used by debuggers) */
#define BRK_BUG 512 /* Used by BUG() */
#define BRK_KDB 513 /* Used in KDB_ENTER() */
+#define BRK_MEMU 514 /* Used by FPU emulator */
#define BRK_MULOVF 1023 /* Multiply overflow */
#endif /* __ASM_BREAK_H */
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