sparc,sparc64: unify lib/

[linux-2.6-omap-h63xx.git] / arch / sparc / lib / NGpatch.S

diff --git a/arch/sparc/lib/NGpatch.S b/arch/sparc/lib/NGpatch.S
new file mode 100644 (file)
index 0000000..3b0674f
--- /dev/null
+++ b/arch/sparc/lib/NGpatch.S
@@ -0,0 +1,33 @@
+/* NGpatch.S: Patch Ultra-I routines with Niagara variant.
+ *
+ * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
+ */
+
+#define BRANCH_ALWAYS  0x10680000
+#define NOP            0x01000000
+#define NG_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  niagara_patch_copyops
+       .type   niagara_patch_copyops,#function
+niagara_patch_copyops:
+       NG_DO_PATCH(memcpy, NGmemcpy)
+       NG_DO_PATCH(___copy_from_user, NGcopy_from_user)
+       NG_DO_PATCH(___copy_to_user, NGcopy_to_user)
+       retl
+        nop
+       .size   niagara_patch_copyops,.-niagara_patch_copyops