[ppc] Fix build breakage for all non-4xx PowerPC variants.

- adapt to the more generic EXCEPTION_PROLOG and CRIT_EXCEPTION macros
- minor 4xx cleanup
diff --git a/cpu/74xx_7xx/start.S b/cpu/74xx_7xx/start.S
index 1143038..b5834b9 100644
--- a/cpu/74xx_7xx/start.S
+++ b/cpu/74xx_7xx/start.S
@@ -125,7 +125,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -143,7 +143,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc5xx/start.S b/cpu/mpc5xx/start.S
index 087435e..9572837 100644
--- a/cpu/mpc5xx/start.S
+++ b/cpu/mpc5xx/start.S
@@ -210,7 +210,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -228,7 +228,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc5xxx/start.S b/cpu/mpc5xxx/start.S
index 3936b55..9b1bd48 100644
--- a/cpu/mpc5xxx/start.S
+++ b/cpu/mpc5xxx/start.S
@@ -208,7 +208,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -227,7 +227,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc8220/start.S b/cpu/mpc8220/start.S
index 5233202..b5145ca 100644
--- a/cpu/mpc8220/start.S
+++ b/cpu/mpc8220/start.S
@@ -169,7 +169,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -188,7 +188,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16	    /* copy EE bit from saved MSR */
diff --git a/cpu/mpc824x/start.S b/cpu/mpc824x/start.S
index 9ff052c..784edc3 100644
--- a/cpu/mpc824x/start.S
+++ b/cpu/mpc824x/start.S
@@ -220,7 +220,7 @@
 /* Alignment exception. */
 	. = EXC_OFF_ALIGN
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -238,7 +238,7 @@
 /* Program check exception */
 	. = EXC_OFF_PROGRAM
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc8260/start.S b/cpu/mpc8260/start.S
index 2e93bbb..bc55b58 100644
--- a/cpu/mpc8260/start.S
+++ b/cpu/mpc8260/start.S
@@ -279,7 +279,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -298,7 +298,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc83xx/start.S b/cpu/mpc83xx/start.S
index 6ee9ec9..496c8a5 100644
--- a/cpu/mpc83xx/start.S
+++ b/cpu/mpc83xx/start.S
@@ -263,7 +263,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -282,7 +282,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 20c7ebc..77c155c 100644
--- a/cpu/mpc85xx/start.S
+++ b/cpu/mpc85xx/start.S
@@ -457,7 +457,7 @@
 /* Alignment exception. */
 	. = 0x0600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -475,7 +475,7 @@
 /* Program check exception */
 	. = 0x0700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc86xx/start.S b/cpu/mpc86xx/start.S
index 67c56db..412745b 100644
--- a/cpu/mpc86xx/start.S
+++ b/cpu/mpc86xx/start.S
@@ -116,7 +116,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -134,7 +134,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/mpc8xx/start.S b/cpu/mpc8xx/start.S
index 33a3f6c..eca4b50 100644
--- a/cpu/mpc8xx/start.S
+++ b/cpu/mpc8xx/start.S
@@ -224,7 +224,7 @@
 /* Alignment exception. */
 	. = 0x600
 Alignment:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	mfspr	r4,DAR
 	stw	r4,_DAR(r21)
 	mfspr	r5,DSISR
@@ -242,7 +242,7 @@
 /* Program check exception */
 	. = 0x700
 ProgramCheck:
-	EXCEPTION_PROLOG
+	EXCEPTION_PROLOG(SRR0, SRR1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	li	r20,MSR_KERNEL
 	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index a46197d..dfe813c 100644
--- a/cpu/ppc4xx/start.S
+++ b/cpu/ppc4xx/start.S
@@ -60,7 +60,6 @@
  *  address and (s)dram will be positioned at address 0
  */
 #include <config.h>
-#include <mpc8xx.h>
 #include <ppc4xx.h>
 #include <version.h>
 
diff --git a/include/74xx_7xx.h b/include/74xx_7xx.h
index ba73bae..4a03cec 100644
--- a/include/74xx_7xx.h
+++ b/include/74xx_7xx.h
@@ -34,6 +34,7 @@
  * Exception offsets (PowerPC standard)
  */
 #define EXC_OFF_SYS_RESET        0x0100      /* default system reset offset */
+#define _START_OFFSET		EXC_OFF_SYS_RESET
 
 /*----------------------------------------------------------------
  * l2cr values
diff --git a/include/mpc5xx.h b/include/mpc5xx.h
index 7508f6d..e9b08a0 100644
--- a/include/mpc5xx.h
+++ b/include/mpc5xx.h
@@ -36,6 +36,7 @@
  * Exception offsets (PowerPC standard)
  */
 #define EXC_OFF_SYS_RESET	0x0100	/* System reset				*/
+#define _START_OFFSET		EXC_OFF_SYS_RESET
 
 /*-----------------------------------------------------------------------
  * ISB bit in IMMR to set internal memory map
diff --git a/include/mpc5xxx.h b/include/mpc5xxx.h
index 089aa13..a4581a3 100644
--- a/include/mpc5xxx.h
+++ b/include/mpc5xxx.h
@@ -39,6 +39,7 @@
 
 /* Exception offsets (PowerPC standard) */
 #define EXC_OFF_SYS_RESET	0x0100
+#define _START_OFFSET		EXC_OFF_SYS_RESET
 
 /* useful macros for manipulating CSx_START/STOP */
 #if defined(CONFIG_MGT5100)
diff --git a/include/mpc8220.h b/include/mpc8220.h
index ff7acc6..d3b1457 100644
--- a/include/mpc8220.h
+++ b/include/mpc8220.h
@@ -35,6 +35,7 @@
 
 /* Exception offsets (PowerPC standard) */
 #define EXC_OFF_SYS_RESET   0x0100
+#define _START_OFFSET	EXC_OFF_SYS_RESET
 
 /* Internal memory map */
 /* MPC8220 Internal Register MMAP */
diff --git a/include/mpc824x.h b/include/mpc824x.h
index 30fc795..4bd8863 100644
--- a/include/mpc824x.h
+++ b/include/mpc824x.h
@@ -142,6 +142,8 @@
 #define EXC_OFF_JMDDI		0x1600	/* Java Mode denorm detect Interr -- WTF??*/
 #define EXC_OFF_RMTE		0x2000	/* Run Mode or Trace Exception */
 
+#define _START_OFFSET		EXC_OFF_SYS_RESET
+
 #define MAP_A_CONFIG_ADDR_HIGH	0x8000	/* Upper half of CONFIG_ADDR for Map A */
 #define MAP_A_CONFIG_ADDR_LOW	0x0CF8	/* Lower half of CONFIG_ADDR for Map A */
 #define MAP_A_CONFIG_DATA_HIGH	0x8000	/* Upper half of CONFIG_DAT for Map A */
diff --git a/include/mpc8260.h b/include/mpc8260.h
index d9dd92d..b61218c 100644
--- a/include/mpc8260.h
+++ b/include/mpc8260.h
@@ -53,7 +53,7 @@
  * Exception offsets (PowerPC standard)
  */
 #define EXC_OFF_SYS_RESET	0x0100	/* System reset			*/
-
+#define _START_OFFSET		EXC_OFF_SYS_RESET
 
 /*-----------------------------------------------------------------------
  * BCR - Bus Configuration Register					 4-25
diff --git a/include/mpc83xx.h b/include/mpc83xx.h
index 60fc214..cbf41c3 100644
--- a/include/mpc83xx.h
+++ b/include/mpc83xx.h
@@ -25,6 +25,7 @@
 /* System reset offset (PowerPC standard)
  */
 #define EXC_OFF_SYS_RESET		0x0100
+#define	_START_OFFSET			EXC_OFF_SYS_RESET
 
 /* IMMRBAR - Internal Memory Register Base Address
  */
diff --git a/include/mpc85xx.h b/include/mpc85xx.h
index a4d99b2..6fbd504 100644
--- a/include/mpc85xx.h
+++ b/include/mpc85xx.h
@@ -8,6 +8,7 @@
 #define __MPC85xx_H__
 
 #define EXC_OFF_SYS_RESET	0x0100	/* System reset	*/
+#define	_START_OFFSET		EXC_OFF_SYS_RESET
 
 #if defined(CONFIG_E500)
 #include <e500.h>
diff --git a/include/mpc86xx.h b/include/mpc86xx.h
index 673bfed..9fd349a 100644
--- a/include/mpc86xx.h
+++ b/include/mpc86xx.h
@@ -8,7 +8,7 @@
 #define __MPC86xx_H__
 
 #define EXC_OFF_SYS_RESET	0x0100	/* System reset	offset */
-
+#define _START_OFFSET		EXC_OFF_SYS_RESET
 
 /*
  * platform register addresses
diff --git a/include/mpc8xx.h b/include/mpc8xx.h
index 2911758..1130598 100644
--- a/include/mpc8xx.h
+++ b/include/mpc8xx.h
@@ -35,7 +35,7 @@
  * Exception offsets (PowerPC standard)
  */
 #define EXC_OFF_SYS_RESET	0x0100	/* System reset				*/
-
+#define _START_OFFSET		EXC_OFF_SYS_RESET
 
 /*-----------------------------------------------------------------------
  * SYPCR - System Protection Control Register				11-9
diff --git a/include/ppc4xx.h b/include/ppc4xx.h
index 8cead66..ca241d2 100644
--- a/include/ppc4xx.h
+++ b/include/ppc4xx.h
@@ -22,7 +22,8 @@
 #ifndef	__PPC4XX_H__
 #define __PPC4XX_H__
 
-#define _START_OFFSET 0x2100
+#define EXC_OFF_SYS_RESET	0x0100	/* System reset				*/
+#define _START_OFFSET		(EXC_OFF_SYS_RESET + 0x2000)
 
 #if defined(CONFIG_440)
 #include <ppc440.h>
diff --git a/include/ppc_asm.tmpl b/include/ppc_asm.tmpl
index ad027d6..9f4029f 100644
--- a/include/ppc_asm.tmpl
+++ b/include/ppc_asm.tmpl
@@ -274,7 +274,7 @@
 #define CRIT_EXCEPTION(n, label, hdlr)				\
 	. = n;							\
 label:								\
-	EXCEPTION_PROLOG(csrr0, csrr1);				\
+	EXCEPTION_PROLOG(CSRR0, CSRR1);				\
 	lwz	r3,GOT(transfer_to_handler);			\
 	mtlr	r3;						\
 	addi	r3,r1,STACK_FRAME_OVERHEAD;			\