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lib: Add ASan support to romstage on x86 arch

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This patch adds ASan support to romstage on x86 architecture.
A Kconfig option is added to enable ASan in romstage. Compiler
flags are updated. A memory space representing the shadow region
is reserved in linker section. And a function call to asan_init()
is added to initialize shadow region when romstage loads.

Change-Id: I67ebfb5e8d602e865b1f5c874860861ae4e54381
Signed-off-by: Harshit Sharma <harshitsharmajs@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43604
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
This commit is contained in:
Harshit Sharma
2020-07-20 00:21:05 -07:00
committed by Patrick Georgi
parent 9c88fb8df0
commit a6ebe08333
6 changed files with 66 additions and 10 deletions
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7
src/include/symbols.h
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@@ -24,7 +24,12 @@ DECLARE_REGION(cbfs_cache)
DECLARE_REGION(fmap_cache)
DECLARE_REGION(tpm_tcpa_log)
#if CONFIG(ASAN_IN_RAMSTAGE)
#if ENV_ROMSTAGE && CONFIG(ASAN_IN_ROMSTAGE)
DECLARE_REGION(bss)
DECLARE_REGION(asan_shadow)
#endif
#if ENV_RAMSTAGE && CONFIG(ASAN_IN_RAMSTAGE)
DECLARE_REGION(data)
DECLARE_REGION(heap)
DECLARE_REGION(asan_shadow)