Trouble using malloc on ARM (Yagarto)
in [Embedded]
|
Prev: How to create a code in C++ for LM3S811 in IAR Embedded Workbench
Next: LPC2888 Flash programming using DFU.
From: najay on 27 Oct 2009 07:06 This may be too late to help the original poster, but I just came across the same issue. The problem was that sbrk was called before malloc_init, so sbrk had null pointers for beginning and end of heap memory. george >> Does it always return 0x00000008 regardless of how many times you've >> called malloc, or regardless of how much you've asked for? =A0The former >> would be a problem; the latter is only a problem if that's not where >> you're supposed to be allocating heap. =A0Since I'm not terribly familiar >> with the ARM, I don't know if there's a problem with having heap memory >> at 0x00000008. >> >> I would expect most malloc routines to return the same address on the >> very first call, to me that's normal behavior. >> >> -- >> Tim Wescott >> Control systems and communications consultinghttp://www.wescottdesign.com >> >> Need to learn how to apply control theory in your embedded system? >> "Applied Control Theory for Embedded Systems" by Tim Wescott >> Elsevier/Newnes,http://www.wescottdesign.com/actfes/actfes.html- Ocultar t= >exto de la cita - >> >> - Mostrar texto de la cita - > >Hello Tim, thanks for showing up. > >Yes: we have a problem here. It returns 0x00000008 regardless of how >many times I call malloc and how much I ask for. It _always_ returns >0x00000008. > >I guess it has to do with the linker file, but I am not so much of a >master with them to find out what has to be fixed. > >Any help is appreciated. > >Thanks. --------------------------------------- This message was sent using the comp.arch.embedded web interface on http://www.EmbeddedRelated.com |