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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 <re.emese@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
This commit is contained in:
Emese Revfy 2016-05-24 00:11:37 +02:00 • committed by Michal Marek
parent 0dae776c6b
commit 543c37cb16
7 changed files with 184 additions and 10 deletions
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6
scripts/gcc-plugins/Makefile
View file

@ -14,8 +14,14 @@ endif
export GCCPLUGINS_DIR HOSTLIBS
ifneq ($(CFLAGS_KCOV), $(SANCOV_PLUGIN))
GCC_PLUGIN := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGIN))
endif
$(HOSTLIBS)-y := $(GCC_PLUGIN)
always := $($(HOSTLIBS)-y)
cyc_complexity_plugin-objs := cyc_complexity_plugin.o
sancov_plugin-objs := sancov_plugin.o
clean-files += *.so