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Re: [patch] compile: Fix MinGW build [Re: [mingw rfc] Add mkdtemp to gdb/gnulib/]
- From: Jan Kratochvil <jan dot kratochvil at redhat dot com>
- To: Eli Zaretskii <eliz at gnu dot org>
- Cc: brobecker at adacore dot com, yao at codesourcery dot com, gdb-patches at sourceware dot org, ktietz at redhat dot com
- Date: Wed, 17 Dec 2014 20:17:55 +0100
- Subject: Re: [patch] compile: Fix MinGW build [Re: [mingw rfc] Add mkdtemp to gdb/gnulib/]
- Authentication-results: sourceware.org; auth=none
- References: <87a92pvc0w dot fsf at codesourcery dot com> <20141215124358 dot GU5457 at adacore dot com> <20141215171225 dot GA19674 at host2 dot jankratochvil dot net> <20141215181449 dot GA5457 at adacore dot com> <20141215182057 dot GA22226 at host2 dot jankratochvil dot net> <20141215183554 dot GB5457 at adacore dot com> <20141215184014 dot GA22610 at host2 dot jankratochvil dot net> <83y4q8wxk7 dot fsf at gnu dot org> <20141215222801 dot GA28138 at host2 dot jankratochvil dot net> <83vblcw9hw dot fsf at gnu dot org>
On Tue, 16 Dec 2014 04:37:15 +0100, Eli Zaretskii wrote:
> > default_infcall_mmap:
> > error (_("This target does not support inferior memory allocation by mmap."));
> >
> > As currently there is only:
> >
> > linux-tdep.c:
> > set_gdbarch_infcall_mmap (gdbarch, linux_infcall_mmap);
>
> Why is mmap needed here?
The project obviously needs something like:
(gdb) call dlopen("just compile piece of code.so");
But as dlopen() is intrusive to the inferior Tom decided it is better to do
much less intrusive
(gdb) print mmap(...)
instead and reimplement what inferior dlopen() does
in gdb/compile/compile-object-load.c - which is being done.
Without mmap() there is nowhere to load the compiled code at.
Jan