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> We are using arm-none-eabi toolchain (we downloaded 2008q1 release > from CodeSoucery website) to build eCos/redboot. Thanks to Chris, we > resolved the link issues in arm.ld but we are meeting memory alignment > issue now. In ecos/package/redboot/current/include/net/net.h, we have > to modify the code, add?__attribute__((aligned(4),packed)) for struct > eth_header_t and pktbuf_t and force them to the 4-byte aligned. > Otherwise, Ethernet driver code will hang the system during RedBoot > startup. We also find in ecos/package/redboot/current/src/fconfig.c, > we also have to force val_ptr in > get_config() to be 4-byte aligned otherwise we can't config IP address > when we run fconfig in redboot. This command will abort and report "** command abort - illegal memory access?" > We can modify the code manually whenever we meet such kind of memory alignment problem but it is really annoying. We wanted to find a compile option > in arm-none-eabi-gcc to work around this issue but failed. Did you meet the similar memory alignment issue? How did you work around this issue? Hi Karl, I didn't run into any alignment issues per se. Without knowing anything else, where is val_ptr pointed at? Is the pointer valid and pointing to what it should be? I would suspect something other than the EABI related stuff directly. Which ARM processor are you targeting? Just for the sake of comparison, I'm attaching the linker script that I use for EABI. Have a look at that and let's go from there. --Chris
Attachment:
arm.ld
Description: arm.ld
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