[IA64] Sanitize assembler code for ia64_sal_os_state

struct ia64_sal_os_state has three semi-independent sections.  The code
in mca_asm.S assumes that these three sections are contiguous, which
makes it very awkward to add new data to this structure.  Remove the
assumption that the sections are contiguous.  Define a macro to shorten
references to offsets in ia64_sal_os_state.

This patch does not change the way that the code behaves.  It just
makes it easier to update the code in future and to add fields to
ia64_sal_os_state when debugging the MCA/INIT handlers.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/ia64/kernel/entry.h b/arch/ia64/kernel/entry.h
index 78eeb0793419..ebc3dfb88826 100644
--- a/arch/ia64/kernel/entry.h
+++ b/arch/ia64/kernel/entry.h
@@ -23,6 +23,7 @@
 
 #define PT(f)           (IA64_PT_REGS_##f##_OFFSET)
 #define SW(f)           (IA64_SWITCH_STACK_##f##_OFFSET)
+#define SOS(f)          (IA64_SAL_OS_STATE_##f##_OFFSET)
 
 #define PT_REGS_SAVES(off)                      \
         .unwabi 3, 'i';                         \