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fuzz: Declare DMA Read callback function
This patch declares the fuzz_dma_read_cb function and uses the preprocessor and linker(weak symbols) to handle these cases: When we build softmmu/all with --enable-fuzzing, there should be no strong symbol defined for fuzz_dma_read_cb, and we link against a weak stub function. When we build softmmu/fuzz with --enable-fuzzing, we link against the strong symbol in generic_fuzz.c When we build softmmu/all without --enable-fuzzing, fuzz_dma_read_cb is an empty, inlined function. As long as we don't call any other functions when building the arguments, there should be no overhead. Signed-off-by: Alexander Bulekov <alxndr@bu.edu> Reviewed-by: Darren Kenny <darren.kenny@oracle.com> Message-Id: <20201023150746.107063-6-alxndr@bu.edu> Signed-off-by: Thomas Huth <thuth@redhat.com>
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@ -47,6 +47,14 @@ void fuzz_dma_read_cb(size_t addr,
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size_t len,
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MemoryRegion *mr,
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bool is_write);
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#else
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static inline void fuzz_dma_read_cb(size_t addr,
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size_t len,
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MemoryRegion *mr,
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bool is_write)
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{
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/* Do Nothing */
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}
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#endif
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extern bool global_dirty_log;
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