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| author | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-08 13:22:55 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-08 13:22:55 +1100 |
| commit | 6206aa8b2b9a45b4cf3ee31b7209b014be349fd9 (patch) | |
| tree | 72c4223a2cc21bf055948eadb3b314ed0568ae9d /arch/sparc/lib/NG2patch.S | |
| parent | 95f8e302c04c0b0c6de35ab399a5551605eeb006 (diff) | |
| parent | 9e42d0cf5020aaf217433cad1a224745241d212a (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/sparc/lib/NG2patch.S')
| -rw-r--r-- | arch/sparc/lib/NG2patch.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sparc/lib/NG2patch.S b/arch/sparc/lib/NG2patch.S new file mode 100644 index 00000000000..28c36f06a6d --- /dev/null +++ b/arch/sparc/lib/NG2patch.S @@ -0,0 +1,33 @@ +/* NG2patch.S: Patch Ultra-I routines with Niagara-2 variant. + * + * Copyright (C) 2007 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 niagara2_patch_copyops + .type niagara2_patch_copyops,#function +niagara2_patch_copyops: + NG_DO_PATCH(memcpy, NG2memcpy) + NG_DO_PATCH(___copy_from_user, NG2copy_from_user) + NG_DO_PATCH(___copy_to_user, NG2copy_to_user) + retl + nop + .size niagara2_patch_copyops,.-niagara2_patch_copyops |