Greetings,
In debugging an issue with a rather old branch of U-Boot (2015-04) I found that the static assignment of a data buffer was not 32-bit aligned which caused data aborts. However I find that current U-boot master does not suffer this issue and no matter what I declare static before the particular variable its always 32-bit aligned. I don't see any code changes that would cause this and in both cases I'm building with the same gcc5.2.0 toolchain.
The code in question is this this from cmd/fdt.c:
} else if (argv[1][0] == 's') { char *pathp; /* path */ char *prop; /* property */ int nodeoffset; /* node offset from libfdt */ static char data[SCRATCHPAD]; /* storage for the property */ int len; /* new length of the property */ int ret;
What guarantee's that 'data' above is 32-bit aligned in master that is missing from the older U-Boot branch I'm using? Perhaps there is some arg in a Makefile that I'm missing?
Regards,
Tim