Willy Tarreau e8f0f1265f CONTRIB: trace: try to display the function's return value on exit ... On x86_64, when gcc instruments functions and compiles at -O0, it saves the function's return value in register rbx before calling the trace callback. It provides a nice opportunity to display certain useful values (flags, booleans etc) during trace sessions. It's absolutely not guaranteed that it will always work but it provides a considerable help when it does so it's worth activating it. When building on a different architecture, the value 0 is always reported as the return value. On x86_64 with optimizations (-O), the RBX register will not necessarily match and random values will be reported, but since it's not the primary target it's not a problem.		2017-10-24 19:54:25 +02:00
..
trace.awk	CONTRIB: trace: try to display the function's return value on exit	2017-10-24 19:54:25 +02:00