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2020 Mar 30
2
LLD bug causing objcopy ELF to binary generation to create large binaries
...ould generate
a 400Mb binary file.
I presume the `noload` flag used in `InputSection` is not properly
enforced throughout the code. CommitSection is not applied to .heap and
.stack section as I can recall during my debug....
.stack (NOLOAD) :ALIGN(4) {
_StackLow =.;
. +=_STACK_SIZE; /* Multiple of 4, asserted above. */
_StackHigh =.;
_StackLowIrq =.;
. +=_IRQ_STACK_SIZE; /* Multiple of 4, asserted above. */
_StackHighIrq =.;
} > Memory_SRAM
....
/* Finally we do the heap */
.heap (NOLOAD) :ALIGN(4...
2020 Mar 29
2
LLD bug causing objcopy ELF to binary generation to create large binaries
Hi LLVM devs,
I came across an LLD bug in v 10.x where ELF parser / processor is
setting .PROGBITS attribute for .heap and .stack sections, which leads
to large binaries when we do `llvm-objcopy -o binary` to generate the
binary output for armv6m. (e.g. for a 57Kb elf would yield a ~400Mb
binary).
This in comparison with LLVM 7.x , would produce the correct binary size
of 35Kb and the