mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 01:59:42 +07:00
478b8fecda
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>
34 lines
881 B
ArmAsm
34 lines
881 B
ArmAsm
/* 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
|