Peter Gibbs <[EMAIL PROTECTED]> wrote: > Leopold Toetsch wrote: >> JIT code is run in malloc'ed memory (s. jit.c:1026) as well as JITted >> NCI stubs. We already have some system specific stuff for JIT (some >> architectures need a page flush before execution). >> >> So best would be to use a set of spcialized function, e.g.: >> - mem_alloc_executable >> - mem_realloc_executable >> - mem_flush_executable >> - mem_free_executable
> Note that JIT already fails under Fedora Core 1 because of 'Exec-Shield' > , which is the Linux equivalent of the functionality described by > Jonathan. Ah, that's the reason for your bug report WRT JIT/NCI. The question is, how can we detect the presence of the exec-shield patch. Your `uname -a` doesn't indicate it. So we need: 1) a config test/option/whatever (e.g. mallocing some mem, fill in a "ret" instruction and call that. 2) Some means to allocate executable memory. Could you please have a look at fedora (kernel) docs? > Regards > Peter Gibbs > EmKel Systems leo
