1*478b8fecSSam Ravnborg/* NGpatch.S: Patch Ultra-I routines with Niagara variant. 2*478b8fecSSam Ravnborg * 3*478b8fecSSam Ravnborg * Copyright (C) 2006 David S. Miller <[email protected]> 4*478b8fecSSam Ravnborg */ 5*478b8fecSSam Ravnborg 6*478b8fecSSam Ravnborg#define BRANCH_ALWAYS 0x10680000 7*478b8fecSSam Ravnborg#define NOP 0x01000000 8*478b8fecSSam Ravnborg#define NG_DO_PATCH(OLD, NEW) \ 9*478b8fecSSam Ravnborg sethi %hi(NEW), %g1; \ 10*478b8fecSSam Ravnborg or %g1, %lo(NEW), %g1; \ 11*478b8fecSSam Ravnborg sethi %hi(OLD), %g2; \ 12*478b8fecSSam Ravnborg or %g2, %lo(OLD), %g2; \ 13*478b8fecSSam Ravnborg sub %g1, %g2, %g1; \ 14*478b8fecSSam Ravnborg sethi %hi(BRANCH_ALWAYS), %g3; \ 15*478b8fecSSam Ravnborg sll %g1, 11, %g1; \ 16*478b8fecSSam Ravnborg srl %g1, 11 + 2, %g1; \ 17*478b8fecSSam Ravnborg or %g3, %lo(BRANCH_ALWAYS), %g3; \ 18*478b8fecSSam Ravnborg or %g3, %g1, %g3; \ 19*478b8fecSSam Ravnborg stw %g3, [%g2]; \ 20*478b8fecSSam Ravnborg sethi %hi(NOP), %g3; \ 21*478b8fecSSam Ravnborg or %g3, %lo(NOP), %g3; \ 22*478b8fecSSam Ravnborg stw %g3, [%g2 + 0x4]; \ 23*478b8fecSSam Ravnborg flush %g2; 24*478b8fecSSam Ravnborg 25*478b8fecSSam Ravnborg .globl niagara_patch_copyops 26*478b8fecSSam Ravnborg .type niagara_patch_copyops,#function 27*478b8fecSSam Ravnborgniagara_patch_copyops: 28*478b8fecSSam Ravnborg NG_DO_PATCH(memcpy, NGmemcpy) 29*478b8fecSSam Ravnborg NG_DO_PATCH(___copy_from_user, NGcopy_from_user) 30*478b8fecSSam Ravnborg NG_DO_PATCH(___copy_to_user, NGcopy_to_user) 31*478b8fecSSam Ravnborg retl 32*478b8fecSSam Ravnborg nop 33*478b8fecSSam Ravnborg .size niagara_patch_copyops,.-niagara_patch_copyops 34