From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/sparc64/kernel/etrap.S | 301 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 301 insertions(+) create mode 100644 arch/sparc64/kernel/etrap.S (limited to 'arch/sparc64/kernel/etrap.S') diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S new file mode 100644 index 000000000000..50d2af1d98ae --- /dev/null +++ b/arch/sparc64/kernel/etrap.S @@ -0,0 +1,301 @@ +/* $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 + +#include +#include +#include +#include +#include +#include +#include +#include + +#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 +cplus_etrap_insn_1: + sethi %hi(0), %g3 + sllx %g3, 32, %g3 +cplus_etrap_insn_2: + sethi %hi(0), %g2 + or %g3, %g2, %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 +cplus_etrap_insn_3: + sethi %hi(0), %g3 + sllx %g3, 32, %g3 +cplus_etrap_insn_4: + sethi %hi(0), %g2 + or %g3, %g2, %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 + +cplus_einsn_1: + sethi %uhi(CTX_CHEETAH_PLUS_NUC), %g3 +cplus_einsn_2: + sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2 + + .globl cheetah_plus_patch_etrap +cheetah_plus_patch_etrap: + /* We configure the dTLB512_0 for 4MB pages and the + * dTLB512_1 for 8K pages when in context zero. + */ + sethi %hi(cplus_einsn_1), %o0 + sethi %hi(cplus_etrap_insn_1), %o2 + lduw [%o0 + %lo(cplus_einsn_1)], %o1 + or %o2, %lo(cplus_etrap_insn_1), %o2 + stw %o1, [%o2] + flush %o2 + sethi %hi(cplus_etrap_insn_3), %o2 + or %o2, %lo(cplus_etrap_insn_3), %o2 + stw %o1, [%o2] + flush %o2 + + sethi %hi(cplus_einsn_2), %o0 + sethi %hi(cplus_etrap_insn_2), %o2 + lduw [%o0 + %lo(cplus_einsn_2)], %o1 + or %o2, %lo(cplus_etrap_insn_2), %o2 + stw %o1, [%o2] + flush %o2 + sethi %hi(cplus_etrap_insn_4), %o2 + or %o2, %lo(cplus_etrap_insn_4), %o2 + stw %o1, [%o2] + flush %o2 + + retl + nop -- cgit v1.2.3