* Copyright (C) 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
*/
+#include <linux/config.h>
#include <asm/asi.h>
#include <asm/pstate.h>
.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
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
+ save %g2, -STACK_BIAS, %sp ! Ordering here is critical
mov %g6, %l6
bne,pn %xcc, 3f
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
+ stxa %g3, [%l4] ASI_DMMU
+ flush %l6
+ wr %g0, ASI_AIUS, %asi
+2: wrpr %g0, 0x0, %tl
+ 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]
- 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
+ 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
-3: mov ASI_P, %l7
- ldub [%l6 + TI_FPDEPTH], %l5
+3: ldub [%l6 + TI_FPDEPTH], %l5
add %l6, TI_FPSAVED + 1, %l4
srl %l5, 1, %l3
add %l5, 2, %l5
* 0x58 TL4's TT
* 0x60 TL
*/
- TRAP_LOAD_THREAD_REG(%g6, %g1)
sub %sp, ((4 * 8) * 4) + 8, %g2
rdpr %tl, %g1
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]
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
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