[MIPS] Rewrite all the assembler interrupt handlers to C.

Saves like 1,600 lines of code, is way easier to debug, compilers
frequently do a better job than the cut and paste type of handlers many
boards had.  And finally having all the stuff done in a single place
also means alot of bug potencial for the MT ASE is gone.

The only surviving handler in assembler is the DECstation one; I hope
Maciej will rewrite it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 14 insertions, 3 deletions

diff --git a/arch/mips/galileo-boards/ev96100/irq.c b/arch/mips/galileo-boards/ev96100/irq.c
index 383801d..ee5d672 100644
--- a/arch/mips/galileo-boards/ev96100/irq.c
+++ b/arch/mips/galileo-boards/ev96100/irq.c
@@ -40,8 +40,6 @@
 #include <linux/interrupt.h>
 #include <asm/irq_cpu.h>
 
-extern asmlinkage void ev96100IRQ(void);
-
 static inline unsigned int ffz8(unsigned int word)
 {
 	unsigned long k;
@@ -54,13 +52,26 @@ static inline unsigned int ffz8(unsigned int word)
 	return k;
 }
 
+extern void mips_timer_interrupt(struct pt_regs *regs);
+
 asmlinkage void ev96100_cpu_irq(unsigned int pending, struct pt_regs *regs)
 {
 	do_IRQ(ffz8(pending >> 8), regs);
 }
 
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+	unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
+
+	if (pending & CAUSEF_IP7)
+		mips_timer_interrupt(regs);
+	else if (pending)
+		ev96100_cpu_irq(pending, regs);
+	else
+		spurious_interrupt(regs);
+}
+
 void __init arch_init_irq(void)
 {
-	set_except_vector(0, ev96100IRQ);
 	mips_cpu_irq_init(0);
 }