ARMCC: PROGRAM DOES NOT REACH MAIN

Information in this article applies to:

• RealView C Compiler Version 3

QUESTION

I have added some modules to my project, and now the program does not reach main anymore. When I run the code in the debugger it seems that the CPU reaches the SWI handler.

In the disassembly window I can see the following instruction:

SWI_Handler     B       SWI_Handler             ; Trap for exception. Branch self.
0x00000044  EAFFFFFE  B         0x00000044

What can be the reason for that?

ANSWER

When the startup code calls the SWI handler, you have most likely used memory allocation functions, but you did not define a heap in the Startup.s file.

Specify a value for Heap_Size in the Startup.s file.

Heap_Size       EQU     0x00001000

MORE INFORMATION

• RealView Compiler and Library User's Guide, The C and C++ Libraries

SEE ALSO

• ARMCC: INIT_MEMPOOL FOR HEAP SETUP DOES NOT EXIST
• RL-ARM: PROGRAM HANGS ON SWI INTERRUPT

Last Reviewed: Wednesday, September 26, 2007