I compiled a C program using -m32 gcc option . I want to profile this program using a Pin tool . My kernel is 64 bit.
I have tried :-
1) pin -t64 <64-bit toolname> -t <32-bit toolname> -- <application>
2) pin -t <32-bit toolname> -- <application>
3) pin -t <64-bit toolname> -- <application>
I have the same .cpp tool file for both the tools compiled differently for 32 bit and 64 bit architectures.
Case 3 invoked an error 'unable to load .. Check the architecture type' .
Cases 1 and 2 , the command was successful but produced some unexpected output , for ex names of images written into a file is empty in this case but contains proper results when executed with a 64-bit application . Which is the correct way to set up the pin tool for this case?
well i found a workaround to compile the 32bit library of pin ( i mean instcount0 ) in 64bit arch.
i did modify the config file related to building the library.
i have pin located in /opt/ so , i edited
/opt/pin-3.0-76991-gcc-linux/source/tools/Config
at line 38
# Define the architecture of the target
# ; TARGET ?= $(HOST_ARCH)
TARGET = ia32
ifeq ($(TARGET),ia32)
BITS := 32
else
BITS := 64
endif
i just changed the target to ia32. works just fine after build .
There are a few caveats to know when starting a program under pin control:
1) The pintool must be compiled in the same architecture than the instrumented program (so, if your program is 32-bit, your pin tool must be 32-bit).
2) Ensure your system is setup to execute 32-bit programs on a 64-bit OS (some linux systems still need ia32-libs and / or need to be prepared for executing 32-bit programs (e.g. sudo dpkg --add-architecture i386)
3) Ensure you have all required libraries for PIN
4) Use pin.sh
Your command should be:
pin -t pintool.so -- <program> <program-options>
If you still have problems it is probably a problem with your pintool code rather than pin itself.
Did you tried one of the simple example (like inscount) on your program ?
Check the version of your PIN binary.
file PIN_DIR/pin
I downloaded PIN kit from this link. My PIN binary is 32-bit. If yours is 64-bit version, you can modify codes that check system architecture in pin.sh, and run
PIN_DIR/pin.sh
That should give you a 32-bit version PIN binary.
