diff options
Diffstat (limited to 'arch/sparc/lib/NG4patch.S')
| -rw-r--r-- | arch/sparc/lib/NG4patch.S | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/sparc/lib/NG4patch.S b/arch/sparc/lib/NG4patch.S new file mode 100644 index 000000000000..a114cbcf2a48 --- /dev/null +++ b/arch/sparc/lib/NG4patch.S | |||
| @@ -0,0 +1,54 @@ | |||
| 1 | /* NG4patch.S: Patch Ultra-I routines with Niagara-4 variant. | ||
| 2 | * | ||
| 3 | * Copyright (C) 2012 David S. Miller <davem@davemloft.net> | ||
| 4 | */ | ||
| 5 | |||
| 6 | #define BRANCH_ALWAYS 0x10680000 | ||
| 7 | #define NOP 0x01000000 | ||
| 8 | #define NG_DO_PATCH(OLD, NEW) \ | ||
| 9 | sethi %hi(NEW), %g1; \ | ||
| 10 | or %g1, %lo(NEW), %g1; \ | ||
| 11 | sethi %hi(OLD), %g2; \ | ||
| 12 | or %g2, %lo(OLD), %g2; \ | ||
| 13 | sub %g1, %g2, %g1; \ | ||
| 14 | sethi %hi(BRANCH_ALWAYS), %g3; \ | ||
| 15 | sll %g1, 11, %g1; \ | ||
| 16 | srl %g1, 11 + 2, %g1; \ | ||
| 17 | or %g3, %lo(BRANCH_ALWAYS), %g3; \ | ||
| 18 | or %g3, %g1, %g3; \ | ||
| 19 | stw %g3, [%g2]; \ | ||
| 20 | sethi %hi(NOP), %g3; \ | ||
| 21 | or %g3, %lo(NOP), %g3; \ | ||
| 22 | stw %g3, [%g2 + 0x4]; \ | ||
| 23 | flush %g2; | ||
| 24 | |||
| 25 | .globl niagara4_patch_copyops | ||
| 26 | .type niagara4_patch_copyops,#function | ||
| 27 | niagara4_patch_copyops: | ||
| 28 | NG_DO_PATCH(memcpy, NG4memcpy) | ||
| 29 | NG_DO_PATCH(___copy_from_user, NG4copy_from_user) | ||
| 30 | NG_DO_PATCH(___copy_to_user, NG4copy_to_user) | ||
| 31 | retl | ||
| 32 | nop | ||
| 33 | .size niagara4_patch_copyops,.-niagara4_patch_copyops | ||
| 34 | |||
| 35 | .globl niagara4_patch_bzero | ||
| 36 | .type niagara4_patch_bzero,#function | ||
| 37 | niagara4_patch_bzero: | ||
| 38 | NG_DO_PATCH(memset, NG4memset) | ||
| 39 | NG_DO_PATCH(__bzero, NG4bzero) | ||
| 40 | NG_DO_PATCH(__clear_user, NGclear_user) | ||
| 41 | NG_DO_PATCH(tsb_init, NGtsb_init) | ||
| 42 | retl | ||
| 43 | nop | ||
| 44 | .size niagara4_patch_bzero,.-niagara4_patch_bzero | ||
| 45 | |||
| 46 | .globl niagara4_patch_pageops | ||
| 47 | .type niagara4_patch_pageops,#function | ||
| 48 | niagara4_patch_pageops: | ||
| 49 | NG_DO_PATCH(copy_user_page, NG4copy_user_page) | ||
| 50 | NG_DO_PATCH(_clear_page, NG4clear_page) | ||
| 51 | NG_DO_PATCH(clear_user_page, NG4clear_user_page) | ||
| 52 | retl | ||
| 53 | nop | ||
| 54 | .size niagara4_patch_pageops,.-niagara4_patch_pageops | ||