diff options
Diffstat (limited to 'arch/sparc64/kernel/entry.S')
| -rw-r--r-- | arch/sparc64/kernel/entry.S | 104 |
1 files changed, 92 insertions, 12 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S index fbd64a507..f62e3506d 100644 --- a/arch/sparc64/kernel/entry.S +++ b/arch/sparc64/kernel/entry.S @@ -1,4 +1,4 @@ -/* $Id: entry.S,v 1.107 1999/08/31 19:25:29 davem Exp $ +/* $Id: entry.S,v 1.110 1999/11/19 05:52:50 davem Exp $ * arch/sparc64/kernel/entry.S: Sparc64 trap low-level entry points. * * Copyright (C) 1995,1997 David S. Miller (davem@caip.rutgers.edu) @@ -214,8 +214,8 @@ do_fptrap: .align 32 .globl do_ivec do_ivec: - wr %g0, ASI_UDB_INTR_R, %asi - ldxa [%g0 + 0x40] %asi, %g3 + mov 0x40, %g3 + ldxa [%g3 + %g0] ASI_UDB_INTR_R, %g3 sethi %hi(KERNBASE), %g4 cmp %g3, %g4 bgeu,pn %xcc, do_ivec_xcall @@ -234,22 +234,25 @@ do_ivec: sllx %g2, %g4, %g2 sllx %g4, 2, %g4 - lduw [%g1 + %g4], %g5 /* g5 = irq_work(cpu, pil) */ + lduw [%g6 + %g4], %g5 /* g5 = irq_work(cpu, pil) */ stw %g5, [%g3 + 0x00] /* bucket->irq_chain = g5 */ - stw %g3, [%g1 + %g4] /* irq_work(cpu, pil) = bucket */ + stw %g3, [%g6 + %g4] /* irq_work(cpu, pil) = bucket */ wr %g2, 0x0, %set_softint retry do_ivec_xcall: - ldxa [%g0 + 0x50] %asi, %g6 + mov 0x50, %g1 + ldxa [%g1 + %g0] ASI_UDB_INTR_R, %g1 srl %g3, 0, %g3 - ldxa [%g0 + 0x60] %asi, %g7 + mov 0x60, %g7 + ldxa [%g7 + %g0] ASI_UDB_INTR_R, %g7 stxa %g0, [%g0] ASI_INTR_RECEIVE membar #Sync jmpl %g3, %g0 nop + do_ivec_spurious: - stw %g3, [%g1 + 0x00] /* irq_work(cpu, 0) = bucket */ + stw %g3, [%g6 + 0x00] /* irq_work(cpu, 0) = bucket */ rdpr %pstate, %g5 wrpr %g5, PSTATE_IG | PSTATE_AG, %pstate @@ -261,6 +264,76 @@ do_ivec_spurious: ba,pt %xcc, rtrap clr %l6 + .globl save_alternate_globals +save_alternate_globals: /* %o0 = save_area */ + rdpr %pstate, %o5 + andn %o5, PSTATE_IE, %o1 + wrpr %o1, PSTATE_AG, %pstate + stx %g0, [%o0 + 0x00] + stx %g1, [%o0 + 0x08] + stx %g2, [%o0 + 0x10] + stx %g3, [%o0 + 0x18] + stx %g4, [%o0 + 0x20] + stx %g5, [%o0 + 0x28] + stx %g6, [%o0 + 0x30] + stx %g7, [%o0 + 0x38] + wrpr %o1, PSTATE_IG, %pstate + stx %g0, [%o0 + 0x40] + stx %g1, [%o0 + 0x48] + stx %g2, [%o0 + 0x50] + stx %g3, [%o0 + 0x58] + stx %g4, [%o0 + 0x60] + stx %g5, [%o0 + 0x68] + stx %g6, [%o0 + 0x70] + stx %g7, [%o0 + 0x78] + wrpr %o1, PSTATE_MG, %pstate + stx %g0, [%o0 + 0x80] + stx %g1, [%o0 + 0x88] + stx %g2, [%o0 + 0x90] + stx %g3, [%o0 + 0x98] + stx %g4, [%o0 + 0xa0] + stx %g5, [%o0 + 0xa8] + stx %g6, [%o0 + 0xb0] + stx %g7, [%o0 + 0xb8] + wrpr %o5, 0x0, %pstate + retl + nop + + .globl restore_alternate_globals +restore_alternate_globals: /* %o0 = save_area */ + rdpr %pstate, %o5 + andn %o5, PSTATE_IE, %o1 + wrpr %o1, PSTATE_AG, %pstate + ldx [%o0 + 0x00], %g0 + ldx [%o0 + 0x08], %g1 + ldx [%o0 + 0x10], %g2 + ldx [%o0 + 0x18], %g3 + ldx [%o0 + 0x20], %g4 + ldx [%o0 + 0x28], %g5 + ldx [%o0 + 0x30], %g6 + ldx [%o0 + 0x38], %g7 + wrpr %o1, PSTATE_IG, %pstate + ldx [%o0 + 0x40], %g0 + ldx [%o0 + 0x48], %g1 + ldx [%o0 + 0x50], %g2 + ldx [%o0 + 0x58], %g3 + ldx [%o0 + 0x60], %g4 + ldx [%o0 + 0x68], %g5 + ldx [%o0 + 0x70], %g6 + ldx [%o0 + 0x78], %g7 + wrpr %o1, PSTATE_MG, %pstate + ldx [%o0 + 0x80], %g0 + ldx [%o0 + 0x88], %g1 + ldx [%o0 + 0x90], %g2 + ldx [%o0 + 0x98], %g3 + ldx [%o0 + 0xa0], %g4 + ldx [%o0 + 0xa8], %g5 + ldx [%o0 + 0xb0], %g6 + ldx [%o0 + 0xb8], %g7 + wrpr %o5, 0x0, %pstate + retl + nop + .globl getcc, setcc getcc: ldx [%o0 + PT_V9_TSTATE], %o1 @@ -313,7 +386,7 @@ floppy_hardint: ldx [%g5 + %lo(pdma_size)], %g5 next_byte: - ldub [%g3], %g7 + lduba [%g3] ASI_PHYS_BYPASS_EC_E, %g7 andcc %g7, 0x80, %g0 be,pn %icc, floppy_fifo_emptied andcc %g7, 0x20, %g0 @@ -322,7 +395,9 @@ next_byte: be,pn %icc, floppy_write sub %g5, 1, %g5 - ldub [%g3 + 1], %g7 + inc %g3 + lduba [%g3] ASI_PHYS_BYPASS_EC_E, %g7 + dec %g3 orcc %g0, %g5, %g0 stb %g7, [%g4] bne,pn %xcc, next_byte @@ -334,7 +409,9 @@ next_byte: floppy_write: ldub [%g4], %g7 orcc %g0, %g5, %g0 - stb %g7, [%g3 + 1] + inc %g3 + stba %g7, [%g3] ASI_PHYS_BYPASS_EC_E + dec %g3 bne,pn %xcc, next_byte add %g4, 1, %g4 @@ -368,7 +445,7 @@ floppy_fifo_emptied: ldx [%g1 + (11 << 3)], %g3 ! irqaction[floppy_irq] ldx [%g3 + 0x10], %g4 ! action->mask == ino_bucket ptr ldx [%g4 + 0x10], %g4 ! bucket->iclr - stw %g0, [%g4] ! SYSIO_ICLR_IDLE + stwa %g0, [%g4] ASI_PHYS_BYPASS_EC_E ! ICLR_IDLE membar #Sync ! probably not needed... retry @@ -652,6 +729,8 @@ breakpoint_trap: ba,pt %xcc, rtrap nop +#if defined(CONFIG_SUNOS_EMUL) || defined(CONFIG_SOLARIS_EMUL) || \ + defined(CONFIG_SOLARIS_EMUL_MODULE) /* SunOS uses syscall zero as the 'indirect syscall' it looks * like indir_syscall(scall_num, arg0, arg1, arg2...); etc. * This is complete brain damage. @@ -705,6 +784,7 @@ sunos_getgid: stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I1] b,pt %xcc, ret_sys_call stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0] +#endif /* SunOS's execv() call only specifies the argv argument, the * environment settings are the same as the calling processes. |