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authorTony Luck <tony.luck@intel.com>2006-11-14 09:33:38 -0800
committerTony Luck <tony.luck@intel.com>2006-12-12 12:00:55 -0800
commit08ed38b68099f2a492196414b08a7f5dd8dc3537 (patch)
tree1be49040ba10db0fefc16a31c4ee13461c50e131 /include
parent75f6a1de41f90543792403bf0ffb3ead59d0d8cc (diff)
[IA64] enable trap code on slot 1
Because slot 1 of one instr bundle crosses border of two consecutive 8-bytes, kprobe on slot 1 is disabled. This patch enables kprobe on slot1, it only replaces higher 8-bytes of the instruction bundle and changes the exception code to ignore the low 12 bits of the break number (which is across the border in the lower 8-bytes of the bundle). For those instructions which must execute regardless qp bits, kprobe on slot 1 is still disabled. Signed-off-by: bibo,mao <bibo.mao@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/asm-ia64/break.h4
-rw-r--r--include/asm-ia64/kprobes.h1
2 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-ia64/break.h b/include/asm-ia64/break.h
index 8167828edc4..f0340203989 100644
--- a/include/asm-ia64/break.h
+++ b/include/asm-ia64/break.h
@@ -12,8 +12,8 @@
* OS-specific debug break numbers:
*/
#define __IA64_BREAK_KDB 0x80100
-#define __IA64_BREAK_KPROBE 0x80200
-#define __IA64_BREAK_JPROBE 0x80300
+#define __IA64_BREAK_KPROBE 0x81000 /* .. 0x81fff */
+#define __IA64_BREAK_JPROBE 0x82000
/*
* OS-specific break numbers:
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 1b45b71c79b..828ae00e47c 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -115,6 +115,7 @@ struct arch_specific_insn {
#define INST_FLAG_BREAK_INST 4
unsigned long inst_flag;
unsigned short target_br_reg;
+ unsigned short slot;
};
extern int kprobe_exceptions_notify(struct notifier_block *self,