Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee13...

[pandora-kernel.git] / arch / m68k / kernel / entry.S

diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 320fde0..34bf7bd 100644 (file)
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -33,7 +33,6 @@
  *              for 68040
  */
 
-#include <linux/config.h>
 #include <linux/linkage.h>
 #include <asm/entry.h>
 #include <asm/errno.h>
@@ -45,9 +44,11 @@
 #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 +192,29 @@ 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 +225,42 @@ 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