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ffcall - foreign function call libraries
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This is a collection of four libraries which can be used to build
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foreign function call interfaces in embedded interpreters.
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avcall - calling C functions with variable arguments
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vacall - C functions accepting variable argument prototypes
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trampoline - closures as first-class C functions
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callback - closures with variable arguments as first-class C functions
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(a reentrant combination of vacall and trampoline)
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Installation instructions:
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./configure --cache-file=config.cache
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Note: you should be able to build with --enable-shared,
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but it makes no sense to do so:
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1) it is overkill: libavcall, libvacall, libcallback have less than 1 KB
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of executable code (most of the real code is in the header files):
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text data bss dec hex filename
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420 0 0 420 1a4 avcall.o (ex libavcall.a)
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81 0 0 81 51 structcpy.o (ex libavcall.a)
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text data bss dec hex filename
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365 0 0 365 16d vacall.o (ex libvacall.a)
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203 0 0 203 cb misc.o (ex libvacall.a)
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81 0 0 81 51 structcpy.o (ex libvacall.a)
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text data bss dec hex filename
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379 0 0 379 17b vacall.o (ex libcallback.a)
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203 0 0 203 cb misc.o (ex libcallback.a)
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81 0 0 81 51 structcpy.o (ex libcallback.a)
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287 0 0 287 11f trampoline.o (ex libcallback.a)
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When a shared library is loaded, you spend at least 4 KB for its code,
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data and BSS. This is overkill for such a tiny library.
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2) The main function here is compiled from non-PIC assembly language.
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I.e. relocations would remain. The GNU linker supports shared libraries
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with relocations on x86 systems. But only on x86!
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Files in this package:
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COPYING free software license
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PLATFORMS list of supported platforms
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avcall/* the avcall package
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vacall/* the vacall package
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trampoline/* the trampoline package
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callback/* the callback package
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configure configuration script
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configure.in autoconf-2.60 source for the configuration script
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autoconf/* auxiliary configuration scripts
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Makefile.in Makefile master
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Copyright 1995-2004 Bruno Haible, <bruno@clisp.org>
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Copyright 2000 Adam Fedor <fedor@gnu.org>
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Copyright 2004 Paul Guyot <pguyot@kallisys.net>
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This is free software distributed under the GNU General Public Licence
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described in the file COPYING. Contact the author if you don't have this
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or can't live with it. There is ABSOLUTELY NO WARRANTY, explicit or implied,
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$ cvs -z3 -d:pserver:anonymous@cvs.savannah.gnu.org:/sources/libffcall co ffcall
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https://savannah.gnu.org/bugs/?func=additem&group=libffcall
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http://www.gnu.org/software/libffcall/
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