[PATCH] m68k: separate handler for auto and user vector interrupt

Use separate entry points for auto and user vector interrupts and cleanup
naming a little.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 42 insertions, 42 deletions

diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 522079f8c2ba..1fb88f3311de 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -45,7 +45,7 @@
 #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
 
@@ -191,44 +191,15 @@ 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)
-
-        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 for autovector interrupts */
 
-/*
-** 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+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
@@ -241,15 +212,16 @@ inthandler:
         jbra    3f
 1:
 #endif
-        jbsr    process_int             |  process the IRQ
+        jsr     m68k_handle_int         |  process the IRQ
 3:      addql   #8,%sp                  |  pop parameters off stack
 
 ret_from_interrupt:
         subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
-        jeq     1f
-2:
-        RESTORE_ALL
-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 +232,40 @@ ret_from_interrupt:
         pea     ret_from_exception
         jra     do_softirq
 
+/* Handler for user defined interrupt vectors */
+
+ENTRY(mach_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
+
+        movel   %sp,%sp@-
+        movel   %d0,%sp@-               |  put vector # on stack
+        movel   mach_process_int,%a0
+        jsr     %a0@                    |  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