diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 03:10:25 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 09:17:19 -0800 |
| commit | 478b8fecda511942404ac232897a718cecd13e48 (patch) | |
| tree | e022fce8ca92f93a000e1cd686255f0b126e9fd5 /arch/sparc/lib/GENpatch.S | |
| parent | 18269c0fd4db9bec2668f895f21d742486ccb90f (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/GENpatch.S')
| -rw-r--r-- | arch/sparc/lib/GENpatch.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sparc/lib/GENpatch.S b/arch/sparc/lib/GENpatch.S new file mode 100644 index 00000000000..fab9e89f16b --- /dev/null +++ b/arch/sparc/lib/GENpatch.S @@ -0,0 +1,33 @@ +/* GENpatch.S: Patch Ultra-I routines with generic variant. + * + * Copyright (C) 2007 David S. Miller <davem@davemloft.net> + */ + +#define BRANCH_ALWAYS 0x10680000 +#define NOP 0x01000000 +#define GEN_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 generic_patch_copyops + .type generic_patch_copyops,#function +generic_patch_copyops: + GEN_DO_PATCH(memcpy, GENmemcpy) + GEN_DO_PATCH(___copy_from_user, GENcopy_from_user) + GEN_DO_PATCH(___copy_to_user, GENcopy_to_user) + retl + nop + .size generic_patch_copyops,.-generic_patch_copyops |