diff options
Diffstat (limited to 'arch/sparc64/kernel/entry.S')
| -rw-r--r-- | arch/sparc64/kernel/entry.S | 82 |
1 files changed, 29 insertions, 53 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S index 2879b1072921..11a848402fb1 100644 --- a/arch/sparc64/kernel/entry.S +++ b/arch/sparc64/kernel/entry.S @@ -33,7 +33,7 @@ /* This is trivial with the new code... */ .globl do_fpdis do_fpdis: - sethi %hi(TSTATE_PEF), %g4 ! IEU0 + sethi %hi(TSTATE_PEF), %g4 rdpr %tstate, %g5 andcc %g5, %g4, %g0 be,pt %xcc, 1f @@ -50,18 +50,18 @@ do_fpdis: add %g0, %g0, %g0 ba,a,pt %xcc, rtrap_clr_l6 -1: ldub [%g6 + TI_FPSAVED], %g5 ! Load Group - wr %g0, FPRS_FEF, %fprs ! LSU Group+4bubbles - andcc %g5, FPRS_FEF, %g0 ! IEU1 Group - be,a,pt %icc, 1f ! CTI - clr %g7 ! IEU0 - ldx [%g6 + TI_GSR], %g7 ! Load Group -1: andcc %g5, FPRS_DL, %g0 ! IEU1 - bne,pn %icc, 2f ! CTI - fzero %f0 ! FPA - andcc %g5, FPRS_DU, %g0 ! IEU1 Group - bne,pn %icc, 1f ! CTI - fzero %f2 ! FPA +1: ldub [%g6 + TI_FPSAVED], %g5 + wr %g0, FPRS_FEF, %fprs + andcc %g5, FPRS_FEF, %g0 + be,a,pt %icc, 1f + clr %g7 + ldx [%g6 + TI_GSR], %g7 +1: andcc %g5, FPRS_DL, %g0 + bne,pn %icc, 2f + fzero %f0 + andcc %g5, FPRS_DU, %g0 + bne,pn %icc, 1f + fzero %f2 faddd %f0, %f2, %f4 fmuld %f0, %f2, %f6 faddd %f0, %f2, %f8 @@ -97,15 +97,17 @@ do_fpdis: faddd %f0, %f2, %f4 fmuld %f0, %f2, %f6 ldxa [%g3] ASI_DMMU, %g5 -cplus_fptrap_insn_1: - sethi %hi(0), %g2 + sethi %hi(sparc64_kern_sec_context), %g2 + ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2 stxa %g2, [%g3] ASI_DMMU membar #Sync add %g6, TI_FPREGS + 0xc0, %g2 faddd %f0, %f2, %f8 fmuld %f0, %f2, %f10 - ldda [%g1] ASI_BLK_S, %f32 ! grrr, where is ASI_BLK_NUCLEUS 8-( + membar #Sync + ldda [%g1] ASI_BLK_S, %f32 ldda [%g2] ASI_BLK_S, %f48 + membar #Sync faddd %f0, %f2, %f12 fmuld %f0, %f2, %f14 faddd %f0, %f2, %f16 @@ -116,7 +118,6 @@ cplus_fptrap_insn_1: fmuld %f0, %f2, %f26 faddd %f0, %f2, %f28 fmuld %f0, %f2, %f30 - membar #Sync b,pt %xcc, fpdis_exit nop 2: andcc %g5, FPRS_DU, %g0 @@ -126,15 +127,17 @@ cplus_fptrap_insn_1: fzero %f34 ldxa [%g3] ASI_DMMU, %g5 add %g6, TI_FPREGS, %g1 -cplus_fptrap_insn_2: - sethi %hi(0), %g2 + sethi %hi(sparc64_kern_sec_context), %g2 + ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2 stxa %g2, [%g3] ASI_DMMU membar #Sync add %g6, TI_FPREGS + 0x40, %g2 faddd %f32, %f34, %f36 fmuld %f32, %f34, %f38 - ldda [%g1] ASI_BLK_S, %f0 ! grrr, where is ASI_BLK_NUCLEUS 8-( + membar #Sync + ldda [%g1] ASI_BLK_S, %f0 ldda [%g2] ASI_BLK_S, %f16 + membar #Sync faddd %f32, %f34, %f40 fmuld %f32, %f34, %f42 faddd %f32, %f34, %f44 @@ -147,18 +150,18 @@ cplus_fptrap_insn_2: fmuld %f32, %f34, %f58 faddd %f32, %f34, %f60 fmuld %f32, %f34, %f62 - membar #Sync ba,pt %xcc, fpdis_exit nop 3: mov SECONDARY_CONTEXT, %g3 add %g6, TI_FPREGS, %g1 ldxa [%g3] ASI_DMMU, %g5 -cplus_fptrap_insn_3: - sethi %hi(0), %g2 + sethi %hi(sparc64_kern_sec_context), %g2 + ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2 stxa %g2, [%g3] ASI_DMMU membar #Sync mov 0x40, %g2 - ldda [%g1] ASI_BLK_S, %f0 ! grrr, where is ASI_BLK_NUCLEUS 8-( + membar #Sync + ldda [%g1] ASI_BLK_S, %f0 ldda [%g1 + %g2] ASI_BLK_S, %f16 add %g1, 0x80, %g1 ldda [%g1] ASI_BLK_S, %f32 @@ -319,8 +322,8 @@ do_fptrap_after_fsr: stx %g3, [%g6 + TI_GSR] mov SECONDARY_CONTEXT, %g3 ldxa [%g3] ASI_DMMU, %g5 -cplus_fptrap_insn_4: - sethi %hi(0), %g2 + sethi %hi(sparc64_kern_sec_context), %g2 + ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2 stxa %g2, [%g3] ASI_DMMU membar #Sync add %g6, TI_FPREGS, %g2 @@ -341,33 +344,6 @@ cplus_fptrap_insn_4: ba,pt %xcc, etrap wr %g0, 0, %fprs -cplus_fptrap_1: - sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2 - - .globl cheetah_plus_patch_fpdis -cheetah_plus_patch_fpdis: - /* We configure the dTLB512_0 for 4MB pages and the - * dTLB512_1 for 8K pages when in context zero. - */ - sethi %hi(cplus_fptrap_1), %o0 - lduw [%o0 + %lo(cplus_fptrap_1)], %o1 - - set cplus_fptrap_insn_1, %o2 - stw %o1, [%o2] - flush %o2 - set cplus_fptrap_insn_2, %o2 - stw %o1, [%o2] - flush %o2 - set cplus_fptrap_insn_3, %o2 - stw %o1, [%o2] - flush %o2 - set cplus_fptrap_insn_4, %o2 - stw %o1, [%o2] - flush %o2 - - retl - nop - /* The registers for cross calls will be: * * DATA 0: [low 32-bits] Address of function to call, jmp to this |
