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x86_64 part 2

Posted 03-06-2012 at 09:57 AM by Rod3775

When XWindows was ported to 64 bit architectures, the decision was made (probably for legacy compatibility) not to add a 64 bit data format to routines that return overloaded pointers, specifically XGetWindowProperties. Pointers, which are 64 bits, are returned in 64 bit elements that are claimed to be 32 bits. There is no way to cope with this in user code, except to check which architecture you are running on. The compiler define "__x86_64" is set on Intel 64 bit compilers. wmctrl (not...
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Old

x86_64 software issues part 1

Posted 03-06-2012 at 09:39 AM by Rod3775

This was my first experience with 64 bit software. I did a stock install of Slackware64, and ran into the following issues:
(a) wpa_supplicant could not reauthenticate after a disconnect.
(b) wmctrl did not work correctly (could not return window list)
(a) I tried to patch wpa_cli to monitor wpa_supplicant and restart it, and discovered that when it is compiled with -O2 (as specified in its Makefile), gcc-4.5.2 compiled bad code - the return value of a function returning...
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