- rdpr %pstate, %l1 ! Prepare to change globals.
- mov %g4, %o1 ! Setup args for
- mov %g5, %o2 ! final call to spitfire_data_access_exception.
- andn %l1, PSTATE_MM, %l1 ! We want to be in RMO
-
- mov %g6, %o7 ! Stash away current.
- wrpr %g0, 0x0, %tl ! Out of trap levels.
- wrpr %l1, (PSTATE_IE | PSTATE_AG | PSTATE_RMO), %pstate
- mov %o7, %g6 ! Get current back.
- ldx [%g6 + TI_TASK], %g4 ! Finish it.
-#ifdef CONFIG_SMP
- mov TSB_REG, %g1
- ldxa [%g1] ASI_IMMU, %g5
-#endif
- call spitfire_data_access_exception
- add %sp, PTREGS_OFF, %o0
-
- b,pt %xcc, rtrap
- nop ! yes, the nop is correct
-spill_fixup_dax:
- ldx [%g6 + TI_FLAGS], %g1
- andcc %g1, _TIF_32BIT, %g0
- ldub [%g6 + TI_WSAVED], %g1
- sll %g1, 3, %g3
- add %g6, %g3, %g3
- stx %sp, [%g3 + TI_RWIN_SPTRS]
-
- sll %g1, 7, %g3
- bne,pt %xcc, 1f
- add %g6, %g3, %g3
- stx %l0, [%g3 + TI_REG_WINDOW + 0x00]
- stx %l1, [%g3 + TI_REG_WINDOW + 0x08]
- stx %l2, [%g3 + TI_REG_WINDOW + 0x10]
- stx %l3, [%g3 + TI_REG_WINDOW + 0x18]
- stx %l4, [%g3 + TI_REG_WINDOW + 0x20]
-
- stx %l5, [%g3 + TI_REG_WINDOW + 0x28]
- stx %l6, [%g3 + TI_REG_WINDOW + 0x30]
- stx %l7, [%g3 + TI_REG_WINDOW + 0x38]
- stx %i0, [%g3 + TI_REG_WINDOW + 0x40]
- stx %i1, [%g3 + TI_REG_WINDOW + 0x48]
- stx %i2, [%g3 + TI_REG_WINDOW + 0x50]
- stx %i3, [%g3 + TI_REG_WINDOW + 0x58]
- stx %i4, [%g3 + TI_REG_WINDOW + 0x60]
-
- stx %i5, [%g3 + TI_REG_WINDOW + 0x68]
- stx %i6, [%g3 + TI_REG_WINDOW + 0x70]
- stx %i7, [%g3 + TI_REG_WINDOW + 0x78]
- b,pt %xcc, 2f
- add %g1, 1, %g1
-1: std %l0, [%g3 + TI_REG_WINDOW + 0x00]
- std %l2, [%g3 + TI_REG_WINDOW + 0x08]
- std %l4, [%g3 + TI_REG_WINDOW + 0x10]
-
- std %l6, [%g3 + TI_REG_WINDOW + 0x18]
- std %i0, [%g3 + TI_REG_WINDOW + 0x20]
- std %i2, [%g3 + TI_REG_WINDOW + 0x28]
- std %i4, [%g3 + TI_REG_WINDOW + 0x30]
- std %i6, [%g3 + TI_REG_WINDOW + 0x38]
- add %g1, 1, %g1
-2: stb %g1, [%g6 + TI_WSAVED]
- rdpr %tstate, %g1
-
- andcc %g1, TSTATE_PRIV, %g0
- saved
- be,pn %xcc, window_dax_from_user_common
- and %g1, TSTATE_CWP, %g1
- retry
-window_dax_from_user_common:
- wrpr %g1, %cwp
- sethi %hi(109f), %g7
- ba,pt %xcc, etrap
-109: or %g7, %lo(109b), %g7
- mov %l4, %o1
- mov %l5, %o2
- call spitfire_data_access_exception
- add %sp, PTREGS_OFF, %o0
- ba,pt %xcc, rtrap
- clr %l6