[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>
diff --git a/include/asm-ia64/mca.h b/include/asm-ia64/mca.h
index 9c5389b..ee97f7c 100644
--- a/include/asm-ia64/mca.h
+++ b/include/asm-ia64/mca.h
@@ -69,14 +69,16 @@
*/
struct ia64_sal_os_state {
- /* SAL to OS, must be at offset 0 */
+
+ /* SAL to OS */
u64 os_gp; /* GP of the os registered with the SAL, physical */
u64 pal_proc; /* PAL_PROC entry point, physical */
u64 sal_proc; /* SAL_PROC entry point, physical */
u64 rv_rc; /* MCA - Rendezvous state, INIT - reason code */
u64 proc_state_param; /* from R18 */
u64 monarch; /* 1 for a monarch event, 0 for a slave */
- /* common, must follow SAL to OS */
+
+ /* common */
u64 sal_ra; /* Return address in SAL, physical */
u64 sal_gp; /* GP of the SAL - physical */
pal_min_state_area_t *pal_min_state; /* from R17. physical in asm, virtual in C */
@@ -98,7 +100,8 @@
u64 iipa;
u64 iim;
u64 iha;
- /* OS to SAL, must follow common */
+
+ /* OS to SAL */
u64 os_status; /* OS status to SAL, enum below */
u64 context; /* 0 if return to same context
1 if return to new context */
