libhfuzz: Support old __sanitizer_cov_trace_cmp

1 files changed, 16 insertions, 0 deletions

diff --git a/libhfuzz/instrument.c b/libhfuzz/instrument.c
index 8b0870ff..186ba977 100644
--- a/libhfuzz/instrument.c
+++ b/libhfuzz/instrument.c
@@ -173,6 +173,22 @@ ATTRIBUTE_X86_REQUIRE_SSE42 void __sanitizer_cov_trace_switch(uint64_t Val, uint
     }
 }
 
+ATTRIBUTE_X86_REQUIRE_SSE42 void __sanitizer_cov_trace_cmp(uint64_t SizeAndType, uint64_t Arg1,
+                                                           uint64_t Arg2)
+{
+    uint64_t CmpSize = (SizeAndType >> 32) / 8;
+    switch (CmpSize) {
+    case (sizeof(uint8_t)):
+        return __sanitizer_cov_trace_cmp1(Arg1, Arg2);
+    case (sizeof(uint16_t)):
+        return __sanitizer_cov_trace_cmp2(Arg1, Arg2);
+    case (sizeof(uint32_t)):
+        return __sanitizer_cov_trace_cmp4(Arg1, Arg2);
+    case (sizeof(uint64_t)):
+        return __sanitizer_cov_trace_cmp8(Arg1, Arg2);
+    }
+}
+
 /*
  * -fsanitize-coverage=trace-pc-guard
  */