Hi there, I'm trying to debug weird bus fault exceptions on my STM32 part. Sometimes the program compiles and runs just fine, and other times it gives a bus fault exception during __init(). I'm stepping into __init, which is initializing the initialized data segment (copying ROM into RAM), and I see this:
(gdb) monitor reset halt JTAG tap: stm32.cpu tap/device found: 0x3ba00477 (Manufacturer: 0x23b, Part: 0xba00, Version: 0x3) JTAG Tap/device matched JTAG tap: stm32.bs tap/device found: 0x16410041 (Manufacturer: 0x020, Part: 0x6410, Version: 0x1) JTAG Tap/device matched target state: halted target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x0800011c (gdb) si 0x0800011e in __init () at lib/src/stm32f10x_vector.c:213 213 pulSrc = &_sidata; 1: x/i $pc 0x800011e <__init+2>: str r3, [r7, #0] Current language: auto; currently c (gdb) p pulSrc $27 = (u32 *) 0x8000134 (gdb) p &_sidata $28 = (long unsigned int *) 0x800a000 (gdb) si 215 for(pulDest = &_sdata; pulDest < &_edata; ) 1: x/i $pc 0x8000120 <__init+4>: ldr r3, [pc, #76] (0x8000170 <__init+84>) (gdb) p &_sidata $29 = (long unsigned int *) 0x800a000 (gdb) p pulSrc $30 = (u32 *) 0x8000134 (gdb) What gives? Either the variable isn't being set correctly, or the debugger isn't reporting it back to me correctly. Or I'm totally dense and missing something. I'm using basically the stock STM32 scripts on revision 1370, with an Olimex ARM-USB-JTAG and the Olimex STM32-P103 dev board. GDB is rev 6.8.50.20081007-cvs. --n _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
