ld: region RAM overflowed with stack

RE: ld: region RAM overflowed with stack

bishop — Wed, 22 Apr 2015 20:21:20 GMT

Maybe exists another solution?for example to edit .ld file, increase RAM length?

RE: ld: region RAM overflowed with stack

Ole Morten — Fri, 03 Jan 2014 11:52:01 GMT

You may also have use in taking a look at this question. In particular, you can safely set the heap size to 0 if you don't use malloc and friends in your application; neither the SDK nor the softdevices use it.

Also, a GCC-specific optimization is to use newlib-nano, by adding --specs=nano.specs to LDFLAGS. This requires GCC 4.7 or later.

Edit: Add link.

RE: ld: region RAM overflowed with stack

Eliot Stock — Mon, 30 Dec 2013 14:19:26 GMT

Making the heap smaller did the trick. Thanks!

RE: ld: region RAM overflowed with stack

Erland Lewin — Sun, 29 Dec 2013 23:10:58 GMT

I had a similar problem.

One thing I did was to decrease the heap size by changing the default heap size to 512 bytes from 2048 in gcc_startup_nrf51.S (saves 1.5k, I don't use malloc):

#ifdef __HEAP_SIZE .equ Heap_Size, __HEAP_SIZE #else .equ Heap_Size, 512 // was 2048 #endif

I also noticed that some C library functions (such as sprintf) pull in C library parts that use significant amounts of RAM.

You could also try decreasing the stack size in the same file.

To exactly see what's eating your RAM, you'd have to post your entire map file, or at least everything related to the .bss segment.

Good luck!

/Erland

RE: ld: region RAM overflowed with stack

Eliot Stock — Sun, 29 Dec 2013 15:17:56 GMT

More detail from my map file:

... .bss 0x0000000020002e69 0x0 /Users/Eliot/dev/gcc-arm/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m/libc.a(lib_a-strlen.o) .bss 0x0000000020002e69 0x0 /Users/Eliot/dev/gcc-arm/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m/libc.a(lib_a-strncpy.o) .bss 0x0000000020002e69 0x0 /Users/Eliot/dev/gcc-arm/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m/libc.a(lib_a-__call_atexit.o) .bss 0x0000000020002e69 0x0 /Users/Eliot/dev/gcc-arm/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m/libc.a(lib_a-atexit.o) .bss 0x0000000020002e69 0x0 /Users/Eliot/dev/gcc-arm/bin/../lib/gcc/arm-none-eabi/4.7.4/armv6-m/crtend.o .bss 0x0000000020002e69 0x0 /Users/Eliot/dev/gcc-arm/bin/../lib/gcc/arm-none-eabi/4.7.4/armv6-m/crtn.o *(COMMON) 0x0000000020002e6c . = ALIGN (0x4) fill 0x0000000020002e69 0x3 00 0x0000000020002e6c bss_end = .

.heap 0x0000000020002e70 0x800 0x0000000020002e70 end = . 0x0000000020002e70 end = end (.heap) .heap 0x0000000020002e70 0x800 ./lib/startup_nrf51.o 0x0000000020002e70 __HeapBase 0x0000000020003670 __HeapLimit = .

.stack_dummy 0x0000000020002e70 0x800 (.stack) .stack 0x0000000020002e70 0x800 ./lib/startup_nrf51.o 0x0000000020004000 __StackTop = (ORIGIN (RAM) + 0x2000) 0x0000000020003800 __StackLimit = (__StackTop - SIZEOF (.stack_dummy)) 0x0000000020004000 PROVIDE (__stack, __StackTop) 0x0000000000000001 ASSERT ((__StackLimit >= __HeapLimit), region RAM overflowed with stack)

RE: ld: region RAM overflowed with stack

Eliot Stock — Sun, 29 Dec 2013 03:37:09 GMT

Original linker script uploads helpfully denied by server. Renamed.

mem.ld.txt

sections.ld.txt