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authorSam Ravnborg <sam@ravnborg.org>2008-12-03 03:10:25 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-04 09:17:19 -0800
commit478b8fecda511942404ac232897a718cecd13e48 (patch)
treee022fce8ca92f93a000e1cd686255f0b126e9fd5 /arch/sparc/lib/U3patch.S
parent18269c0fd4db9bec2668f895f21d742486ccb90f (diff)
sparc,sparc64: unify lib/
o Renamed files in sparc64 to <name>_64.S when identical to sparc32 files. o iomap.c were equal for sparc32 and sparc64 o adjusted sparc/Makefile now we have only one lib/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib/U3patch.S')
-rw-r--r--arch/sparc/lib/U3patch.S33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sparc/lib/U3patch.S b/arch/sparc/lib/U3patch.S
new file mode 100644
index 00000000000..ecc302619a6
--- /dev/null
+++ b/arch/sparc/lib/U3patch.S
@@ -0,0 +1,33 @@
+/* U3patch.S: Patch Ultra-I routines with Ultra-III variant.
+ *
+ * Copyright (C) 2004 David S. Miller <davem@redhat.com>
+ */
+
+#define BRANCH_ALWAYS 0x10680000
+#define NOP 0x01000000
+#define ULTRA3_DO_PATCH(OLD, NEW) \
+ sethi %hi(NEW), %g1; \
+ or %g1, %lo(NEW), %g1; \
+ sethi %hi(OLD), %g2; \
+ or %g2, %lo(OLD), %g2; \
+ sub %g1, %g2, %g1; \
+ sethi %hi(BRANCH_ALWAYS), %g3; \
+ sll %g1, 11, %g1; \
+ srl %g1, 11 + 2, %g1; \
+ or %g3, %lo(BRANCH_ALWAYS), %g3; \
+ or %g3, %g1, %g3; \
+ stw %g3, [%g2]; \
+ sethi %hi(NOP), %g3; \
+ or %g3, %lo(NOP), %g3; \
+ stw %g3, [%g2 + 0x4]; \
+ flush %g2;
+
+ .globl cheetah_patch_copyops
+ .type cheetah_patch_copyops,#function
+cheetah_patch_copyops:
+ ULTRA3_DO_PATCH(memcpy, U3memcpy)
+ ULTRA3_DO_PATCH(___copy_from_user, U3copy_from_user)
+ ULTRA3_DO_PATCH(___copy_to_user, U3copy_to_user)
+ retl
+ nop
+ .size cheetah_patch_copyops,.-cheetah_patch_copyops