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| H A D | kern.ld.S | f3368ec89a431332b10c7294227c903c9bb4e1bf Fri Nov 27 10:01:56 UTC 2020 Jerome Forissier <jerome@forissier.org> core: arm: kern.ld.S: fix ROUNDUP() and ROUNDDOWN() for Clang
Fixes exceptions on boot when CFG_WITH_ASLR=y CFG_WITH_PAGER=y and the
Clang toolchain is used (tested with QEMUv8 and Clang 11.0.0).
The Clang linker happens to generate non-relocatable references to
symbols defined by expressions in the linker script which involve
some arithmetic operations on another symbol. More specifically, when
rounding up or down addresses to page boundaries using the expressions
defined in <util.h>. This commit introduces different ways of doing
ROUNDUP() and ROUNDDOWN() which work with both Clang and GCC:
- ROUNDUP() is replaced with the linker ALIGN() built-in function,
- ROUNDDOWN() is rewritten as 'symbol - something'.
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
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