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Add sancov plugin

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The sancov gcc plugin inserts a __sanitizer_cov_trace_pc() call
at the start of basic blocks.

This plugin is a helper plugin for the kcov feature. It supports
all gcc versions with plugin support (from gcc-4.5 on).
It is based on the gcc commit "Add fuzzing coverage support" by Dmitry Vyukov
(https://gcc.gnu.org/viewcvs/gcc?limit_changes=0&view=revision&revision=231296).

Signed-off-by: Emese Revfy <[email protected]>
Acked-by: Kees Cook <[email protected]>
Signed-off-by: Michal Marek <[email protected]>
This commit is contained in:
Emese Revfy 2016-05-24 00:11:37 +02:00 • committed by Michal Marek
commit 543c37cb16
7 changed files with 184 additions and 10 deletions
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9
arch/Kconfig
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@ -384,6 +384,15 @@ config GCC_PLUGIN_CYC_COMPLEXITY
N = the number of nodes
P = the number of connected components (exit nodes).
config GCC_PLUGIN_SANCOV
bool
depends on GCC_PLUGINS
help
This plugin inserts a __sanitizer_cov_trace_pc() call at the start of
basic blocks. It supports all gcc versions with plugin support (from
gcc-4.5 on). It is based on the commit "Add fuzzing coverage support"
by Dmitry Vyukov <[email protected]>.
config HAVE_CC_STACKPROTECTOR
bool
help