diff options
Diffstat (limited to 'arch/mips/kernel/entry.S')
| -rw-r--r-- | arch/mips/kernel/entry.S | 77 |
1 files changed, 6 insertions, 71 deletions
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S index c955b964e..2e286da80 100644 --- a/arch/mips/kernel/entry.S +++ b/arch/mips/kernel/entry.S @@ -7,7 +7,7 @@ * * Copyright (C) 1994, 1995 by Ralf Baechle * - * $Id: entry.S,v 1.2 1997/08/11 04:21:31 ralf Exp $ + * $Id: entry.S,v 1.4 1997/09/20 19:20:13 root Exp $ */ /* @@ -50,6 +50,7 @@ reschedule: jal schedule nop EXPORT(ret_from_sys_call) +EXPORT(ret_from_irq) lw t0,bh_mask lw t1,bh_active # unused delay slot and t0,t1 @@ -75,64 +76,15 @@ EXPORT(ret_from_sys_call) jal do_signal move a1,sp - .set noat -EXPORT(return) +EXPORT(return) .set noat RESTORE_ALL eret .set at /* - * Beware: interrupt, fast_interrupt and bad_interrupt have unusual - * calling conventions to speedup the mess. - * - * a0 - interrupt number - * s2 - destroyed - * return values: - * v0 - return routine + * Common spurious interrupt handler. */ .text - .set at - .align 5 -NESTED(interrupt, PT_SIZE, sp) - move s2,ra - mfc0 t0,CP0_STATUS # enable IRQs - ori t0,0x1f - xori t0,0x1e - mtc0 t0,CP0_STATUS - - jal do_IRQ - move a1,sp - - mfc0 t0,CP0_STATUS # disable IRQs - ori t0,1 - xori t0,1 - mtc0 t0,CP0_STATUS - .set reorder - la v0,ret_from_sys_call - jr s2 - .set noreorder - END(interrupt) - - .align 5 -NESTED(fast_interrupt, PT_SIZE, sp) - move s2,ra - jal do_fast_IRQ - nop - - .set reorder - la v0,return - jr s2 - .set noreorder - END(fast_interrupt) - - /* - * Don't return & unblock the pic - */ -LEAF(bad_interrupt) - j return - END(bad_interrupt) - - .text .align 5 LEAF(spurious_interrupt) /* @@ -141,10 +93,8 @@ LEAF(spurious_interrupt) */ lui t1,%hi(spurious_count) lw t0,%lo(spurious_count)(t1) - la v0,return addiu t0,1 - - jr ra + j ret_from_irq sw t0,%lo(spurious_count)(t1) END(spurious_interrupt) @@ -164,7 +114,7 @@ LEAF(spurious_interrupt) REG_S t0,PT_BVADDR(sp); #define __BUILD_silent(exception) -#define fmt "Got %s at %016Lx.\n" +#define fmt "Got %s at %08lx.\n" #define __BUILD_verbose(exception) \ la a1,8f; \ @@ -215,21 +165,6 @@ EXPORT(exception_count_##exception); \ BUILD_HANDLER(reserved,reserved,none,verbose) /* others */ /* - * Exception handler table with 32 entries. - * This might be extended to handle software exceptions - */ - .bss - .align PTRLOG -EXPORT(exception_handlers) - .fill 32,PTRSIZE,0 - -/* - * Interrupt handler table with 32 entries. - */ -EXPORT(IRQ_vectors) - .fill 32,PTRSIZE,0 - -/* * Table of syscalls */ .data |