diff options
Diffstat (limited to 'arch/sparc64/kernel/etrap.S')
| -rw-r--r-- | arch/sparc64/kernel/etrap.S | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S deleted file mode 100644 index 29ce489bc18..00000000000 --- a/arch/sparc64/kernel/etrap.S +++ /dev/null @@ -1,236 +0,0 @@ -/* - * etrap.S: Preparing for entry into the kernel on Sparc V9. - * - * Copyright (C) 1996, 1997 David S. Miller (davem@caip.rutgers.edu) - * Copyright (C) 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz) - */ - - -#include <asm/asi.h> -#include <asm/pstate.h> -#include <asm/ptrace.h> -#include <asm/page.h> -#include <asm/spitfire.h> -#include <asm/head.h> -#include <asm/processor.h> -#include <asm/mmu.h> - -#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) - -/* - * On entry, %g7 is return address - 0x4. - * %g4 and %g5 will be preserved %l4 and %l5 respectively. - */ - - .text - .align 64 - .globl etrap_syscall, etrap, etrap_irq, etraptl1 -etrap: rdpr %pil, %g2 -etrap_irq: clr %g3 -etrap_syscall: TRAP_LOAD_THREAD_REG(%g6, %g1) - rdpr %tstate, %g1 - or %g1, %g3, %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] - rdpr %tt, %g1 - st %g3, [%g2 + STACKFRAME_SZ + PT_V9_Y] - sethi %hi(PT_REGS_MAGIC), %g3 - or %g3, %g1, %g1 - st %g1, [%g2 + STACKFRAME_SZ + PT_V9_MAGIC] - - 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: 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: - * 0x00 TL1's TSTATE - * 0x08 TL1's TPC - * 0x10 TL1's TNPC - * 0x18 TL1's TT - * ... - * 0x58 TL4's TT - * 0x60 TL - */ - TRAP_LOAD_THREAD_REG(%g6, %g1) - sub %sp, ((4 * 8) * 4) + 8, %g2 - rdpr %tl, %g1 - - wrpr %g0, 1, %tl - rdpr %tstate, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x00] - rdpr %tpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x08] - rdpr %tnpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x10] - rdpr %tt, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x18] - - wrpr %g0, 2, %tl - rdpr %tstate, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x20] - rdpr %tpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x28] - rdpr %tnpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x30] - 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 %tpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x48] - rdpr %tnpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x50] - rdpr %tt, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x58] - - wrpr %g0, 4, %tl - rdpr %tstate, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x60] - rdpr %tpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x68] - rdpr %tnpc, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x70] - rdpr %tt, %g3 - stx %g3, [%g2 + STACK_BIAS + 0x78] - - 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 - -#undef TASK_REGOFF -#undef ETRAP_PSTATE1 |