diff options
Diffstat (limited to 'arch/sparc64/kernel/etrap.S')
| -rw-r--r-- | arch/sparc64/kernel/etrap.S | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S deleted file mode 100644 index 0d8eba21111..00000000000 --- a/arch/sparc64/kernel/etrap.S +++ /dev/null @@ -1,258 +0,0 @@ -/* $Id: etrap.S,v 1.46 2002/02/09 19:49:30 davem Exp $ - * 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 <linux/config.h> - -#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, etrap_irq, etraptl1 -etrap: rdpr %pil, %g2 -etrap_irq: - 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 - - 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] - st %g3, [%g2 + STACKFRAME_SZ + PT_V9_Y] - save %g2, -STACK_BIAS, %sp ! Ordering here is critical - 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 - stxa %g3, [%l4] ASI_DMMU - flush %l6 - wr %g0, ASI_AIUS, %asi -2: wrpr %g0, 0x0, %tl - mov %g4, %l4 - mov %g5, %l5 - - mov %g7, %l2 - wrpr %g0, ETRAP_PSTATE1, %pstate - stx %g1, [%sp + PTREGS_OFF + PT_V9_G1] - stx %g2, [%sp + PTREGS_OFF + PT_V9_G2] - stx %g3, [%sp + PTREGS_OFF + PT_V9_G3] - 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] - 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 - -3: 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 - */ - 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] - - 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] - - wrpr %g1, %tl - stx %g1, [%g2 + STACK_BIAS + 0x80] - - 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 |