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authorScott Wood <scottwood@freescale.com>2011-06-14 18:34:27 -0500
committerAvi Kivity <avi@redhat.com>2011-07-12 13:16:31 +0300
commitc51584d52e3878aa9b2bb98cdfb87173e7acf560 (patch)
treec52d3133b30fcc6b68555b8b55232f89fb4b7c84 /arch/powerpc/include/asm/ppc_asm.h
parent685659ee70db0bac47ffd619c726cf600e504fd7 (diff)
downloadvexpress-lsk-c51584d52e3878aa9b2bb98cdfb87173e7acf560.tar.gz
powerpc/e500: SPE register saving: take arbitrary struct offset
Previously, these macros hardcoded THREAD_EVR0 as the base of the save area, relative to the base register passed. This base offset is now passed as a separate macro parameter, allowing reuse with other SPE save areas, such as used by KVM. Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/include/asm/ppc_asm.h')
-rw-r--r--arch/powerpc/include/asm/ppc_asm.h28
1 files changed, 16 insertions, 12 deletions
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index 1b422381fc1..368f72f7980 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -150,18 +150,22 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
#define REST_16VSRSU(n,b,base) REST_8VSRSU(n,b,base); REST_8VSRSU(n+8,b,base)
#define REST_32VSRSU(n,b,base) REST_16VSRSU(n,b,base); REST_16VSRSU(n+16,b,base)
-#define SAVE_EVR(n,s,base) evmergehi s,s,n; stw s,THREAD_EVR0+4*(n)(base)
-#define SAVE_2EVRS(n,s,base) SAVE_EVR(n,s,base); SAVE_EVR(n+1,s,base)
-#define SAVE_4EVRS(n,s,base) SAVE_2EVRS(n,s,base); SAVE_2EVRS(n+2,s,base)
-#define SAVE_8EVRS(n,s,base) SAVE_4EVRS(n,s,base); SAVE_4EVRS(n+4,s,base)
-#define SAVE_16EVRS(n,s,base) SAVE_8EVRS(n,s,base); SAVE_8EVRS(n+8,s,base)
-#define SAVE_32EVRS(n,s,base) SAVE_16EVRS(n,s,base); SAVE_16EVRS(n+16,s,base)
-#define REST_EVR(n,s,base) lwz s,THREAD_EVR0+4*(n)(base); evmergelo n,s,n
-#define REST_2EVRS(n,s,base) REST_EVR(n,s,base); REST_EVR(n+1,s,base)
-#define REST_4EVRS(n,s,base) REST_2EVRS(n,s,base); REST_2EVRS(n+2,s,base)
-#define REST_8EVRS(n,s,base) REST_4EVRS(n,s,base); REST_4EVRS(n+4,s,base)
-#define REST_16EVRS(n,s,base) REST_8EVRS(n,s,base); REST_8EVRS(n+8,s,base)
-#define REST_32EVRS(n,s,base) REST_16EVRS(n,s,base); REST_16EVRS(n+16,s,base)
+/*
+ * b = base register for addressing, o = base offset from register of 1st EVR
+ * n = first EVR, s = scratch
+ */
+#define SAVE_EVR(n,s,b,o) evmergehi s,s,n; stw s,o+4*(n)(b)
+#define SAVE_2EVRS(n,s,b,o) SAVE_EVR(n,s,b,o); SAVE_EVR(n+1,s,b,o)
+#define SAVE_4EVRS(n,s,b,o) SAVE_2EVRS(n,s,b,o); SAVE_2EVRS(n+2,s,b,o)
+#define SAVE_8EVRS(n,s,b,o) SAVE_4EVRS(n,s,b,o); SAVE_4EVRS(n+4,s,b,o)
+#define SAVE_16EVRS(n,s,b,o) SAVE_8EVRS(n,s,b,o); SAVE_8EVRS(n+8,s,b,o)
+#define SAVE_32EVRS(n,s,b,o) SAVE_16EVRS(n,s,b,o); SAVE_16EVRS(n+16,s,b,o)
+#define REST_EVR(n,s,b,o) lwz s,o+4*(n)(b); evmergelo n,s,n
+#define REST_2EVRS(n,s,b,o) REST_EVR(n,s,b,o); REST_EVR(n+1,s,b,o)
+#define REST_4EVRS(n,s,b,o) REST_2EVRS(n,s,b,o); REST_2EVRS(n+2,s,b,o)
+#define REST_8EVRS(n,s,b,o) REST_4EVRS(n,s,b,o); REST_4EVRS(n+4,s,b,o)
+#define REST_16EVRS(n,s,b,o) REST_8EVRS(n,s,b,o); REST_8EVRS(n+8,s,b,o)
+#define REST_32EVRS(n,s,b,o) REST_16EVRS(n,s,b,o); REST_16EVRS(n+16,s,b,o)
/* Macros to adjust thread priority for hardware multithreading */
#define HMT_VERY_LOW or 31,31,31 # very low priority