diff options
Diffstat (limited to 'arch/sparc64/kernel/winfixup.S')
| -rw-r--r-- | arch/sparc64/kernel/winfixup.S | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/arch/sparc64/kernel/winfixup.S b/arch/sparc64/kernel/winfixup.S deleted file mode 100644 index a6b0863..0000000 --- a/arch/sparc64/kernel/winfixup.S +++ /dev/null @@ -1,156 +0,0 @@ -/* winfixup.S: Handle cases where user stack pointer is found to be bogus. - * - * Copyright (C) 1997, 2006 David S. Miller (davem@davemloft.net) - */ - -#include <asm/asi.h> -#include <asm/head.h> -#include <asm/page.h> -#include <asm/ptrace.h> -#include <asm/processor.h> -#include <asm/spitfire.h> -#include <asm/thread_info.h> - - .text - - /* It used to be the case that these register window fault - * handlers could run via the save and restore instructions - * done by the trap entry and exit code. They now do the - * window spill/fill by hand, so that case no longer can occur. - */ - - .align 32 -fill_fixup: - TRAP_LOAD_THREAD_REG(%g6, %g1) - rdpr %tstate, %g1 - and %g1, TSTATE_CWP, %g1 - or %g4, FAULT_CODE_WINFIXUP, %g4 - stb %g4, [%g6 + TI_FAULT_CODE] - stx %g5, [%g6 + TI_FAULT_ADDR] - wrpr %g1, %cwp - ba,pt %xcc, etrap - rd %pc, %g7 - call do_sparc64_fault - add %sp, PTREGS_OFF, %o0 - ba,pt %xcc, rtrap - nop - - /* Be very careful about usage of the trap globals here. - * You cannot touch %g5 as that has the fault information. - */ -spill_fixup: -spill_fixup_mna: -spill_fixup_dax: - TRAP_LOAD_THREAD_REG(%g6, %g1) - 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] - ba,pt %xcc, 2f - stx %i7, [%g3 + TI_REG_WINDOW + 0x78] -1: stw %l0, [%g3 + TI_REG_WINDOW + 0x00] - stw %l1, [%g3 + TI_REG_WINDOW + 0x04] - stw %l2, [%g3 + TI_REG_WINDOW + 0x08] - stw %l3, [%g3 + TI_REG_WINDOW + 0x0c] - stw %l4, [%g3 + TI_REG_WINDOW + 0x10] - stw %l5, [%g3 + TI_REG_WINDOW + 0x14] - stw %l6, [%g3 + TI_REG_WINDOW + 0x18] - stw %l7, [%g3 + TI_REG_WINDOW + 0x1c] - stw %i0, [%g3 + TI_REG_WINDOW + 0x20] - stw %i1, [%g3 + TI_REG_WINDOW + 0x24] - stw %i2, [%g3 + TI_REG_WINDOW + 0x28] - stw %i3, [%g3 + TI_REG_WINDOW + 0x2c] - stw %i4, [%g3 + TI_REG_WINDOW + 0x30] - stw %i5, [%g3 + TI_REG_WINDOW + 0x34] - stw %i6, [%g3 + TI_REG_WINDOW + 0x38] - stw %i7, [%g3 + TI_REG_WINDOW + 0x3c] -2: add %g1, 1, %g1 - stb %g1, [%g6 + TI_WSAVED] - rdpr %tstate, %g1 - andcc %g1, TSTATE_PRIV, %g0 - saved - be,pn %xcc, 1f - and %g1, TSTATE_CWP, %g1 - retry -1: mov FAULT_CODE_WRITE | FAULT_CODE_DTLB | FAULT_CODE_WINFIXUP, %g4 - stb %g4, [%g6 + TI_FAULT_CODE] - stx %g5, [%g6 + TI_FAULT_ADDR] - wrpr %g1, %cwp - ba,pt %xcc, etrap - rd %pc, %g7 - call do_sparc64_fault - add %sp, PTREGS_OFF, %o0 - ba,a,pt %xcc, rtrap - -winfix_mna: - andn %g3, 0x7f, %g3 - add %g3, 0x78, %g3 - wrpr %g3, %tnpc - done - -fill_fixup_mna: - rdpr %tstate, %g1 - and %g1, TSTATE_CWP, %g1 - wrpr %g1, %cwp - ba,pt %xcc, etrap - rd %pc, %g7 - sethi %hi(tlb_type), %g1 - lduw [%g1 + %lo(tlb_type)], %g1 - cmp %g1, 3 - bne,pt %icc, 1f - add %sp, PTREGS_OFF, %o0 - mov %l4, %o2 - call sun4v_do_mna - mov %l5, %o1 - ba,a,pt %xcc, rtrap -1: mov %l4, %o1 - mov %l5, %o2 - call mem_address_unaligned - nop - ba,a,pt %xcc, rtrap - -winfix_dax: - andn %g3, 0x7f, %g3 - add %g3, 0x74, %g3 - wrpr %g3, %tnpc - done - -fill_fixup_dax: - rdpr %tstate, %g1 - and %g1, TSTATE_CWP, %g1 - wrpr %g1, %cwp - ba,pt %xcc, etrap - rd %pc, %g7 - sethi %hi(tlb_type), %g1 - mov %l4, %o1 - lduw [%g1 + %lo(tlb_type)], %g1 - mov %l5, %o2 - cmp %g1, 3 - bne,pt %icc, 1f - add %sp, PTREGS_OFF, %o0 - call sun4v_data_access_exception - nop - ba,a,pt %xcc, rtrap -1: call spitfire_data_access_exception - nop - ba,a,pt %xcc, rtrap |
