diff options
Diffstat (limited to 'arch/sparc64/kernel/etrap.S')
| -rw-r--r-- | arch/sparc64/kernel/etrap.S | 170 |
1 files changed, 72 insertions, 98 deletions
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S index 0d8eba21111b..149383835c25 100644 --- a/arch/sparc64/kernel/etrap.S +++ b/arch/sparc64/kernel/etrap.S @@ -31,6 +31,7 @@ .globl etrap, etrap_irq, etraptl1 etrap: rdpr %pil, %g2 etrap_irq: + TRAP_LOAD_THREAD_REG(%g6, %g1) rdpr %tstate, %g1 sllx %g2, 20, %g3 andcc %g1, TSTATE_PRIV, %g0 @@ -54,7 +55,31 @@ etrap_irq: rd %y, %g3 stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC] st %g3, [%g2 + STACKFRAME_SZ + PT_V9_Y] - save %g2, -STACK_BIAS, %sp ! Ordering here is critical + + 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 @@ -70,42 +95,56 @@ etrap_irq: wrpr %g2, 0, %wstate sethi %hi(sparc64_kern_pri_context), %g2 ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3 - stxa %g3, [%l4] ASI_DMMU - flush %l6 - wr %g0, ASI_AIUS, %asi -2: wrpr %g0, 0x0, %tl - mov %g4, %l4 + +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 - mov %g7, %l2 - wrpr %g0, ETRAP_PSTATE1, %pstate 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] - stx %i7, [%sp + PTREGS_OFF + PT_V9_I7] - wrpr %g0, ETRAP_PSTATE2, %pstate mov %l6, %g6 -#ifdef CONFIG_SMP - mov TSB_REG, %g3 - ldxa [%g3] ASI_IMMU, %g5 -#endif - jmpl %l2 + 0x4, %g0 - ldx [%g6 + TI_TASK], %g4 + 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 +3: mov ASI_P, %l7 + ldub [%l6 + TI_FPDEPTH], %l5 add %l6, TI_FPSAVED + 1, %l4 srl %l5, 1, %l3 add %l5, 2, %l5 @@ -125,6 +164,7 @@ 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 @@ -148,6 +188,11 @@ 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] @@ -168,91 +213,20 @@ 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] +finish_tl1_capture: + wrpr %g0, 1, %tl +661: nop + .section .sun4v_1insn_patch, "ax" + .word 661b + SET_GL(1) + .previous + rdpr %tstate, %g1 sub %g2, STACKFRAME_SZ + TRACEREG_SZ - STACK_BIAS, %g2 ba,pt %xcc, 1b andcc %g1, TSTATE_PRIV, %g0 - .align 64 - .globl scetrap -scetrap: rdpr %pil, %g2 - 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 - - sllx %g1, 51, %g3 - sethi %hi(TASK_REGOFF), %g2 - or %g2, %lo(TASK_REGOFF), %g2 - brlz,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] - stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC] - save %g2, -STACK_BIAS, %sp ! Ordering here is critical - mov %g6, %l6 - bne,pn %xcc, 2f - mov ASI_P, %l7 - rdpr %canrestore, %g3 - - rdpr %wstate, %g2 - wrpr %g0, 0, %canrestore - sll %g2, 3, %g2 - mov PRIMARY_CONTEXT, %l4 - wrpr %g3, 0, %otherwin - wrpr %g2, 0, %wstate - sethi %hi(sparc64_kern_pri_context), %g2 - ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3 - stxa %g3, [%l4] ASI_DMMU - flush %l6 - - mov ASI_AIUS, %l7 -2: mov %g4, %l4 - mov %g5, %l5 - add %g7, 0x4, %l2 - wrpr %g0, ETRAP_PSTATE1, %pstate - 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] -#ifdef CONFIG_SMP - mov TSB_REG, %g3 - ldxa [%g3] ASI_IMMU, %g5 -#endif - ldx [%g6 + TI_TASK], %g4 - done - #undef TASK_REGOFF #undef ETRAP_PSTATE1 |