diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2012-04-18 17:16:47 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-04-19 15:07:49 -0700 |
| commit | 84f4fc524eed040660bd4ebc8cba259d8afe8461 (patch) | |
| tree | 887728e36e36a2596e846536c86ebac868ca08cc | |
| parent | 46326013e34eb5c178a91f06c1f2e99e79eed924 (diff) | |
x86: Add symbolic constant for exceptions with error code
Add a symbolic constant for the bitmask which states which exceptions
carry an error code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1334794610-5546-3-git-send-email-hpa@zytor.com
| -rw-r--r-- | arch/x86/include/asm/segment.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/head_64.S | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h index 165466233ab0..58c1e6cd91b6 100644 --- a/arch/x86/include/asm/segment.h +++ b/arch/x86/include/asm/segment.h @@ -205,6 +205,8 @@ #define IDT_ENTRIES 256 #define NUM_EXCEPTION_VECTORS 32 +/* Bitmask of exception vectors which push an error code on the stack */ +#define EXCEPTION_ERRCODE_MASK 0x00027d00 #define GDT_SIZE (GDT_ENTRIES * 8) #define GDT_ENTRY_TLS_ENTRIES 3 #define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8) diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 40f4eb3766d1..adf52e85d551 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -295,7 +295,7 @@ ENTRY(early_idt_handler) ja 0f movl $1,%eax salq %cl,%rax - testl $0x27d00,%eax + testl $EXCEPTION_ERRCODE_MASK,%eax je 0f popq %r8 # get error code 0: movq 0(%rsp),%rcx # get ip |