Update to use the latest Yagarto and change the C handler part of the interrupt routines to use the noinline attribute.

Demo/ARM7_LPC2106_GCC/lpc2106-ram.ld

@@ -36,6 +36,12 @@ SECTIONS
 		*(.bss)
 	} >ram
 
+	. = ALIGN(4);
+	.eh_frame :
+	{
+		 KEEP (*(.eh_frame))
+	} > ram
+	
 	/* Align here to ensure that the .bss section occupies space up to
 	_end.  Align after .bss to ensure correct alignment even if the
 	.bss section disappears because there are no input sections.  */

Demo/ARM7_LPC2106_GCC/lpc2106-rom.ld

@@ -36,6 +36,12 @@ SECTIONS
 		*(.bss)
 	} >ram
 
+	. = ALIGN(4);
+	.eh_frame :
+	{
+		 KEEP (*(.eh_frame))
+	} > ram
+	
 	/* Align here to ensure that the .bss section occupies space up to
 	_end.  Align after .bss to ensure correct alignment even if the
 	.bss section disappears because there are no input sections.  */

Demo/ARM7_LPC2106_GCC/serial/serialISR.c

@@ -96,7 +96,7 @@ void vSerialISRCreateQueues( unsigned portBASE_TYPE uxQueueLength, xQueueHandle
 void vUART_ISR_Wrapper( void ) __attribute__ ((naked));
 
 /* UART0 interrupt service routine handler. */
-void vUART_ISR_Handler( void );
+void vUART_ISR_Handler( void ) __attribute__ ((noinline));
 
 /*-----------------------------------------------------------*/
 void vSerialISRCreateQueues(	unsigned portBASE_TYPE uxQueueLength, xQueueHandle *pxRxedChars, 
@@ -124,7 +124,7 @@ void vUART_ISR_Wrapper( void )
 
 	/* Call the handler.  This must be a separate function from the wrapper
 	to ensure the correct stack frame is set up. */
-	vUART_ISR_Handler();
+	__asm volatile ("bl vUART_ISR_Handler");
 
 	/* Restore the context of whichever task is going to run next. */
 	portRESTORE_CONTEXT();