PortalPlayer: Implement irq_handler() directly in C code rather than dispatching to irq() from crt0-pp.S. Remove unneeded STUB macros.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19801 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/crt0-pp.S

@@ -362,19 +362,6 @@ data_abort_handler:
     mov    r1, #2
     b      UIE
 
-irq_handler:
-#ifndef STUB
-    stmfd  sp!, {r0-r3, r12, lr}
-    bl     irq
-    ldmfd  sp!, {r0-r3, r12, lr}
-#endif
-    subs   pc, lr, #4
-
-#ifdef STUB
-UIE:
-    b UIE
-#endif
-
 /* Align stacks to cache line boundary */
     .balign 32
     

firmware/target/arm/system-pp5002.c

@@ -27,7 +27,7 @@
 extern void TIMER1(void);
 extern void TIMER2(void);
 
-void irq(void)
+void __attribute__((interrupt("IRQ"))) irq_handler(void)
 {
     if(CURRENT_CORE == CPU)
     {

firmware/target/arm/system-pp502x.c

@@ -36,7 +36,7 @@ extern void SERIAL0(void);
 extern void ipod_mini_button_int(void); /* iPod Mini 1st gen only */
 extern void ipod_4g_button_int(void);   /* iPod 4th gen and higher only */
 
-void irq(void)
+void __attribute__((interrupt("IRQ"))) irq_handler(void)
 {
     if(CURRENT_CORE == CPU)
     {