X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc64%2Fkernel%2Fetrap.S;h=4b2bf9eb447a1f5eaa7c93b27627c0c217a9937b;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=9468eacdc9c0c7a2893d990a524977b486c5901c;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S index 9468eacdc..4b2bf9eb4 100644 --- a/arch/sparc64/kernel/etrap.S +++ b/arch/sparc64/kernel/etrap.S @@ -5,7 +5,6 @@ * Copyright (C) 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz) */ -#include #include #include @@ -14,10 +13,12 @@ #include #include #include +#include #define TASK_REGOFF (THREAD_SIZE-TRACEREG_SZ-STACKFRAME_SZ) #define ETRAP_PSTATE1 (PSTATE_RMO | PSTATE_PRIV) -#define ETRAP_PSTATE2 (PSTATE_RMO | PSTATE_PEF | PSTATE_PRIV | PSTATE_IE) +#define ETRAP_PSTATE2 \ + (PSTATE_RMO | PSTATE_PEF | PSTATE_PRIV | PSTATE_IE) /* * On entry, %g7 is return address - 0x4. @@ -27,91 +28,133 @@ .text .align 64 .globl etrap, etrap_irq, etraptl1 -etrap: rdpr %pil, %g2 ! Single Group +etrap: rdpr %pil, %g2 etrap_irq: - rdpr %tstate, %g1 ! Single Group - sllx %g2, 20, %g3 ! IEU0 Group - andcc %g1, TSTATE_PRIV, %g0 ! IEU1 - or %g1, %g3, %g1 ! IEU0 Group - bne,pn %xcc, 1f ! CTI - sub %sp, STACKFRAME_SZ+TRACEREG_SZ-STACK_BIAS, %g2 ! IEU1 - wrpr %g0, 7, %cleanwin ! Single Group+4bubbles - - sethi %hi(TASK_REGOFF), %g2 ! IEU0 Group - sethi %hi(TSTATE_PEF), %g3 ! IEU1 - or %g2, %lo(TASK_REGOFF), %g2 ! IEU0 Group - and %g1, %g3, %g3 ! IEU1 - brnz,pn %g3, 1f ! CTI+IEU1 Group - add %g6, %g2, %g2 ! IEU0 - wr %g0, 0, %fprs ! Single Group+4bubbles -1: rdpr %tpc, %g3 ! Single Group - - stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TSTATE] ! Store Group - rdpr %tnpc, %g1 ! Single Group - stx %g3, [%g2 + STACKFRAME_SZ + PT_V9_TPC] ! Store Group - rd %y, %g3 ! Single Group+4bubbles - stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC] ! Store Group - st %g3, [%g2 + STACKFRAME_SZ + PT_V9_Y] ! Store Group - save %g2, -STACK_BIAS, %sp ! Ordering here is critical ! Single Group - mov %g6, %l6 ! IEU0 Group - - bne,pn %xcc, 3f ! CTI - mov PRIMARY_CONTEXT, %l4 ! IEU1 - rdpr %canrestore, %g3 ! Single Group+4bubbles - rdpr %wstate, %g2 ! Single Group+4bubbles - wrpr %g0, 0, %canrestore ! Single Group+4bubbles - sll %g2, 3, %g2 ! IEU0 Group - mov 1, %l5 ! IEU1 - stb %l5, [%l6 + TI_FPDEPTH] ! Store - - wrpr %g3, 0, %otherwin ! Single Group+4bubbles - wrpr %g2, 0, %wstate ! Single Group+4bubbles - stxa %g0, [%l4] ASI_DMMU ! Store Group - flush %l6 ! Single Group+9bubbles - wr %g0, ASI_AIUS, %asi ! Single Group+4bubbles -2: wrpr %g0, 0x0, %tl ! Single Group+4bubbles - mov %g4, %l4 ! IEU1 - mov %g5, %l5 ! IEU0 Group - - mov %g7, %l2 ! IEU1 - wrpr %g0, ETRAP_PSTATE1, %pstate ! Single Group+4bubbles - stx %g1, [%sp + PTREGS_OFF + PT_V9_G1] ! Store Group - stx %g2, [%sp + PTREGS_OFF + PT_V9_G2] ! Store Group - stx %g3, [%sp + PTREGS_OFF + PT_V9_G3] ! Store Group - stx %g4, [%sp + PTREGS_OFF + PT_V9_G4] ! Store Group - stx %g5, [%sp + PTREGS_OFF + PT_V9_G5] ! Store Group - stx %g6, [%sp + PTREGS_OFF + PT_V9_G6] ! Store Group - - stx %g7, [%sp + PTREGS_OFF + PT_V9_G7] ! Store Group - stx %i0, [%sp + PTREGS_OFF + PT_V9_I0] ! Store Group - stx %i1, [%sp + PTREGS_OFF + PT_V9_I1] ! Store Group - stx %i2, [%sp + PTREGS_OFF + PT_V9_I2] ! Store Group - stx %i3, [%sp + PTREGS_OFF + PT_V9_I3] ! Store Group - stx %i4, [%sp + PTREGS_OFF + PT_V9_I4] ! Store Group - stx %i5, [%sp + PTREGS_OFF + PT_V9_I5] ! Store Group - - stx %i6, [%sp + PTREGS_OFF + PT_V9_I6] ! Store Group - stx %i7, [%sp + PTREGS_OFF + PT_V9_I7] ! Store Group - wrpr %g0, ETRAP_PSTATE2, %pstate ! Single Group+4bubbles - mov %l6, %g6 ! IEU0 - jmpl %l2 + 0x4, %g0 ! CTI Group - ldx [%g6 + TI_TASK], %g4 ! Load - nop - nop - nop + TRAP_LOAD_THREAD_REG(%g6, %g1) + rdpr %tstate, %g1 + sllx %g2, 20, %g3 + andcc %g1, TSTATE_PRIV, %g0 + or %g1, %g3, %g1 + bne,pn %xcc, 1f + sub %sp, STACKFRAME_SZ+TRACEREG_SZ-STACK_BIAS, %g2 + wrpr %g0, 7, %cleanwin + + sethi %hi(TASK_REGOFF), %g2 + sethi %hi(TSTATE_PEF), %g3 + or %g2, %lo(TASK_REGOFF), %g2 + and %g1, %g3, %g3 + brnz,pn %g3, 1f + add %g6, %g2, %g2 + wr %g0, 0, %fprs +1: rdpr %tpc, %g3 + + stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TSTATE] + rdpr %tnpc, %g1 + stx %g3, [%g2 + STACKFRAME_SZ + PT_V9_TPC] + rd %y, %g3 + stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC] + st %g3, [%g2 + STACKFRAME_SZ + PT_V9_Y] + + rdpr %cansave, %g1 + brnz,pt %g1, etrap_save + nop + + rdpr %cwp, %g1 + add %g1, 2, %g1 + wrpr %g1, %cwp + be,pt %xcc, etrap_user_spill + mov ASI_AIUP, %g3 + + rdpr %otherwin, %g3 + brz %g3, etrap_kernel_spill + mov ASI_AIUS, %g3 + +etrap_user_spill: + + wr %g3, 0x0, %asi + ldx [%g6 + TI_FLAGS], %g3 + and %g3, _TIF_32BIT, %g3 + brnz,pt %g3, etrap_user_spill_32bit + nop + ba,a,pt %xcc, etrap_user_spill_64bit + +etrap_save: save %g2, -STACK_BIAS, %sp + mov %g6, %l6 + + bne,pn %xcc, 3f + mov PRIMARY_CONTEXT, %l4 + rdpr %canrestore, %g3 + rdpr %wstate, %g2 + wrpr %g0, 0, %canrestore + sll %g2, 3, %g2 + mov 1, %l5 + stb %l5, [%l6 + TI_FPDEPTH] + + wrpr %g3, 0, %otherwin + wrpr %g2, 0, %wstate + sethi %hi(sparc64_kern_pri_context), %g2 + ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3 + +661: stxa %g3, [%l4] ASI_DMMU + .section .sun4v_1insn_patch, "ax" + .word 661b + stxa %g3, [%l4] ASI_MMU + .previous + + sethi %hi(KERNBASE), %l4 + flush %l4 + mov ASI_AIUS, %l7 +2: mov %g4, %l4 + mov %g5, %l5 + add %g7, 4, %l2 + + /* Go to trap time globals so we can save them. */ +661: wrpr %g0, ETRAP_PSTATE1, %pstate + .section .sun4v_1insn_patch, "ax" + .word 661b + SET_GL(0) + .previous + + stx %g1, [%sp + PTREGS_OFF + PT_V9_G1] + stx %g2, [%sp + PTREGS_OFF + PT_V9_G2] + sllx %l7, 24, %l7 + stx %g3, [%sp + PTREGS_OFF + PT_V9_G3] + rdpr %cwp, %l0 + stx %g4, [%sp + PTREGS_OFF + PT_V9_G4] + stx %g5, [%sp + PTREGS_OFF + PT_V9_G5] + stx %g6, [%sp + PTREGS_OFF + PT_V9_G6] + stx %g7, [%sp + PTREGS_OFF + PT_V9_G7] + or %l7, %l0, %l7 + sethi %hi(TSTATE_RMO | TSTATE_PEF), %l0 + or %l7, %l0, %l7 + wrpr %l2, %tnpc + wrpr %l7, (TSTATE_PRIV | TSTATE_IE), %tstate + stx %i0, [%sp + PTREGS_OFF + PT_V9_I0] + stx %i1, [%sp + PTREGS_OFF + PT_V9_I1] + stx %i2, [%sp + PTREGS_OFF + PT_V9_I2] + stx %i3, [%sp + PTREGS_OFF + PT_V9_I3] + stx %i4, [%sp + PTREGS_OFF + PT_V9_I4] + stx %i5, [%sp + PTREGS_OFF + PT_V9_I5] + stx %i6, [%sp + PTREGS_OFF + PT_V9_I6] + mov %l6, %g6 + stx %i7, [%sp + PTREGS_OFF + PT_V9_I7] + LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %l1) + ldx [%g6 + TI_TASK], %g4 + done -3: ldub [%l6 + TI_FPDEPTH], %l5 ! Load Group - add %l6, TI_FPSAVED + 1, %l4 ! IEU0 - srl %l5, 1, %l3 ! IEU0 Group - add %l5, 2, %l5 ! IEU1 - stb %l5, [%l6 + TI_FPDEPTH] ! Store - ba,pt %xcc, 2b ! CTI - stb %g0, [%l4 + %l3] ! Store Group +3: mov ASI_P, %l7 + ldub [%l6 + TI_FPDEPTH], %l5 + add %l6, TI_FPSAVED + 1, %l4 + srl %l5, 1, %l3 + add %l5, 2, %l5 + stb %l5, [%l6 + TI_FPDEPTH] + ba,pt %xcc, 2b + stb %g0, [%l4 + %l3] nop etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself. - * We place this right after pt_regs on the trap stack. The layout - * is: + * We place this right after pt_regs on the trap stack. + * The layout is: * 0x00 TL1's TSTATE * 0x08 TL1's TPC * 0x10 TL1's TNPC @@ -120,6 +163,7 @@ etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself. * 0x58 TL4's TT * 0x60 TL */ + TRAP_LOAD_THREAD_REG(%g6, %g1) sub %sp, ((4 * 8) * 4) + 8, %g2 rdpr %tl, %g1 @@ -143,6 +187,11 @@ etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself. rdpr %tt, %g3 stx %g3, [%g2 + STACK_BIAS + 0x38] + sethi %hi(is_sun4v), %g3 + lduw [%g3 + %lo(is_sun4v)], %g3 + brnz,pn %g3, finish_tl1_capture + nop + wrpr %g0, 3, %tl rdpr %tstate, %g3 stx %g3, [%g2 + STACK_BIAS + 0x40] @@ -163,88 +212,20 @@ etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself. rdpr %tt, %g3 stx %g3, [%g2 + STACK_BIAS + 0x78] - wrpr %g1, %tl stx %g1, [%g2 + STACK_BIAS + 0x80] - rdpr %tstate, %g1 ! Single Group+4bubbles - sub %g2, STACKFRAME_SZ + TRACEREG_SZ - STACK_BIAS, %g2 ! IEU1 - ba,pt %xcc, 1b ! CTI Group - andcc %g1, TSTATE_PRIV, %g0 ! IEU0 +finish_tl1_capture: + wrpr %g0, 1, %tl +661: nop + .section .sun4v_1insn_patch, "ax" + .word 661b + SET_GL(1) + .previous - .align 64 - .globl scetrap -scetrap: rdpr %pil, %g2 ! Single Group - rdpr %tstate, %g1 ! Single Group - sllx %g2, 20, %g3 ! IEU0 Group - andcc %g1, TSTATE_PRIV, %g0 ! IEU1 - or %g1, %g3, %g1 ! IEU0 Group - bne,pn %xcc, 1f ! CTI - sub %sp, (STACKFRAME_SZ+TRACEREG_SZ-STACK_BIAS), %g2 ! IEU1 - wrpr %g0, 7, %cleanwin ! Single Group+4bubbles - - sllx %g1, 51, %g3 ! IEU0 Group - sethi %hi(TASK_REGOFF), %g2 ! IEU1 - or %g2, %lo(TASK_REGOFF), %g2 ! IEU0 Group - brlz,pn %g3, 1f ! CTI+IEU1 - add %g6, %g2, %g2 ! IEU0 Group - wr %g0, 0, %fprs ! Single Group+4bubbles -1: rdpr %tpc, %g3 ! Single Group - stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TSTATE] ! Store Group - - rdpr %tnpc, %g1 ! Single Group - stx %g3, [%g2 + STACKFRAME_SZ + PT_V9_TPC] ! Store Group - stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC] ! Store Group - save %g2, -STACK_BIAS, %sp ! Ordering here is critical ! Single Group - mov %g6, %l6 ! IEU0 Group - bne,pn %xcc, 2f ! CTI - mov ASI_P, %l7 ! IEU1 - rdpr %canrestore, %g3 ! Single Group+4bubbles - - rdpr %wstate, %g2 ! Single Group+4bubbles - wrpr %g0, 0, %canrestore ! Single Group+4bubbles - sll %g2, 3, %g2 ! IEU0 Group - mov PRIMARY_CONTEXT, %l4 ! IEU1 - wrpr %g3, 0, %otherwin ! Single Group+4bubbles - wrpr %g2, 0, %wstate ! Single Group+4bubbles - stxa %g0, [%l4] ASI_DMMU ! Store - flush %l6 ! Single Group+9bubbles - - mov ASI_AIUS, %l7 ! IEU0 Group -2: mov %g4, %l4 ! IEU1 - mov %g5, %l5 ! IEU0 Group - add %g7, 0x4, %l2 ! IEU1 - wrpr %g0, ETRAP_PSTATE1, %pstate ! Single Group+4bubbles - stx %g1, [%sp + PTREGS_OFF + PT_V9_G1] ! Store Group - stx %g2, [%sp + PTREGS_OFF + PT_V9_G2] ! Store Group - sllx %l7, 24, %l7 ! IEU0 - - stx %g3, [%sp + PTREGS_OFF + PT_V9_G3] ! Store Group - rdpr %cwp, %l0 ! Single Group - stx %g4, [%sp + PTREGS_OFF + PT_V9_G4] ! Store Group - stx %g5, [%sp + PTREGS_OFF + PT_V9_G5] ! Store Group - stx %g6, [%sp + PTREGS_OFF + PT_V9_G6] ! Store Group - stx %g7, [%sp + PTREGS_OFF + PT_V9_G7] ! Store Group - or %l7, %l0, %l7 ! IEU0 - sethi %hi(TSTATE_RMO | TSTATE_PEF), %l0 ! IEU1 - - or %l7, %l0, %l7 ! IEU0 Group - wrpr %l2, %tnpc ! Single Group+4bubbles - wrpr %l7, (TSTATE_PRIV | TSTATE_IE), %tstate ! Single Group+4bubbles - stx %i0, [%sp + PTREGS_OFF + PT_V9_I0] ! Store Group - stx %i1, [%sp + PTREGS_OFF + PT_V9_I1] ! Store Group - stx %i2, [%sp + PTREGS_OFF + PT_V9_I2] ! Store Group - stx %i3, [%sp + PTREGS_OFF + PT_V9_I3] ! Store Group - stx %i4, [%sp + PTREGS_OFF + PT_V9_I4] ! Store Group - - stx %i5, [%sp + PTREGS_OFF + PT_V9_I5] ! Store Group - stx %i6, [%sp + PTREGS_OFF + PT_V9_I6] ! Store Group - mov %l6, %g6 ! IEU1 - stx %i7, [%sp + PTREGS_OFF + PT_V9_I7] ! Store Group - ldx [%g6 + TI_TASK], %g4 ! Load Group - done - nop - nop + rdpr %tstate, %g1 + sub %g2, STACKFRAME_SZ + TRACEREG_SZ - STACK_BIAS, %g2 + ba,pt %xcc, 1b + andcc %g1, TSTATE_PRIV, %g0 #undef TASK_REGOFF #undef ETRAP_PSTATE1 -#undef ETRAP_PSTATE2