Hi, I would respond in-thread, but I can't find the thread that had the original report that emacs-22 doesn't work under vmmap. Perhaps it was only on icb...
Anyways, emacs-22.3p8 doesn't work under vmmap on i386. And the lovely thing is, it's not my bug. :) Emacs, by way of elf commands, insists on having the data area (ep_daddr) start at address 0x81bd000 (approx 136MB). This means that, starting at that address, a huge amount of memory (BRKSIZ + MAXDSIZ = 3GB) is unavailable to load libraries. Normally, this is not a problem (try this on sparc and it just works, for example). But i386 is special in the way it handles W^X requiring approx 512MB to load libraries (this presentation explains it all: http://www.openbsd.org/papers/ven05-deraadt/index.html ). Short story long, emacs fails to load its libraries into the area it reserved for brk() and our ld.so, noticing it is asked to work miracles here, rightfully objects. Possible way to fix this: teach emacs to be happy with the default ep_daddr instead of being special or get PXE working (hint hint!). -- Ariane
