diff options
Diffstat (limited to 'arch/m68k/kernel/entry.S')
| -rw-r--r-- | arch/m68k/kernel/entry.S | 104 |
1 files changed, 50 insertions, 54 deletions
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index 320fde05dc63..449b62b30f45 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -45,9 +45,11 @@ #include <asm/asm-offsets.h> .globl system_call, buserr, trap, resume -.globl inthandler, sys_call_table +.globl sys_call_table .globl sys_fork, sys_clone, sys_vfork .globl ret_from_interrupt, bad_interrupt +.globl auto_irqhandler_fixup +.globl user_irqvec_fixup, user_irqhandler_fixup .text ENTRY(buserr) @@ -191,65 +193,29 @@ do_delayed_trace: jbra resume_userspace -#if 0 -#ifdef CONFIG_AMIGA -ami_inthandler: - addql #1,irq_stat+CPUSTAT_LOCAL_IRQ_COUNT - SAVE_ALL_INT - GET_CURRENT(%d0) +/* This is the main interrupt handler for autovector interrupts */ - bfextu %sp@(PT_VECTOR){#4,#12},%d0 - movel %d0,%a0 - addql #1,%a0@(kstat+STAT_IRQ-VECOFF(VEC_SPUR)) - movel %a0@(autoirq_list-VECOFF(VEC_SPUR)),%a0 - -| amiga vector int handler get the req mask instead of irq vector - lea CUSTOMBASE,%a1 - movew %a1@(C_INTREQR),%d0 - andw %a1@(C_INTENAR),%d0 - -| prepare stack (push frame pointer, dev_id & req mask) - pea %sp@ - movel %a0@(IRQ_DEVID),%sp@- - movel %d0,%sp@- - pea %pc@(ret_from_interrupt:w) - jbra @(IRQ_HANDLER,%a0)@(0) - -ENTRY(nmi_handler) - rte -#endif -#endif - -/* -** This is the main interrupt handler, responsible for calling process_int() -*/ -inthandler: +ENTRY(auto_inthandler) SAVE_ALL_INT GET_CURRENT(%d0) - addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+2) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) | put exception # in d0 - bfextu %sp@(PT_VECTOR){#4,#10},%d0 + bfextu %sp@(PT_VECTOR){#4,#10},%d0 + subw #VEC_SPUR,%d0 movel %sp,%sp@- movel %d0,%sp@- | put vector # on stack -#if defined(MACH_Q40_ONLY) && defined(CONFIG_BLK_DEV_FD) - btstb #4,0xff000000 | Q40 floppy needs very special treatment ... - jbeq 1f - btstb #3,0xff000004 - jbeq 1f - jbsr floppy_hardint - jbra 3f -1: -#endif - jbsr process_int | process the IRQ -3: addql #8,%sp | pop parameters off stack +auto_irqhandler_fixup = . + 2 + jsr m68k_handle_int | process the IRQ + addql #8,%sp | pop parameters off stack ret_from_interrupt: - subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+2) - jeq 1f -2: - RESTORE_ALL -1: + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt +2: RESTORE_ALL + + ALIGN +ret_from_last_interrupt: moveq #(~ALLOWINT>>8)&0xff,%d0 andb %sp@(PT_SR),%d0 jne 2b @@ -260,12 +226,42 @@ ret_from_interrupt: pea ret_from_exception jra do_softirq +/* Handler for user defined interrupt vectors */ + +ENTRY(user_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + | put exception # in d0 + bfextu %sp@(PT_VECTOR){#4,#10},%d0 +user_irqvec_fixup = . + 2 + subw #VEC_USER,%d0 + + movel %sp,%sp@- + movel %d0,%sp@- | put vector # on stack +user_irqhandler_fixup = . + 2 + jsr m68k_handle_int | process the IRQ + addql #8,%sp | pop parameters off stack + + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt + RESTORE_ALL /* Handler for uninitialized and spurious interrupts */ -bad_interrupt: - addql #1,num_spurious - rte +ENTRY(bad_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + + movel %sp,%sp@- + jsr handle_badint + addql #4,%sp + + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt + RESTORE_ALL + ENTRY(sys_fork) SAVE_SWITCH_STACK |