search for: __asan_load4_noabort

Hi Kcc, I'm trying enabling the Asan in my firmware, but I find the asan instrumentation code size impact is too big for me. I just implement necessary firmware version runtime library functions (e.g. __asan_report_load8) with blank body firstly to pass the asan enabled build, but I find the new binary code size is already ~2.5 times as original one with asan disabled in GCC. I know Linux

...x cmpb %al, %cl jl .LBB0_3 # BB#2: callq __asan_report_load4 With this flag it will look like this: movq %rdi, %rbx callq __asan_load4 movl (%rbx), %eax Obviously, there is a cost in performance. Clang (and recent gcc) also have a convenience flag -fsanitize=kernel-address: movq %rdi, %rbx callq __asan_load4_noabort movl (%rbx), %eax If that does not solve your code size problem, let's look at it more. --kcc > > > > > *Steven Shi* > > *Intel\SSG\STO\UEFI Firmware* > > > > Tel: +86 021-61166522 <+86%2021%206116%206522> > > iNet: 821-6522 > > > -----...