2009-06-08 Andrew Haley <aph@redhat.com>
+ Import from libffi 3.0.8:
+
+ * doc/libffi.texi: New file.
+ * doc/libffi.info: Likewise.
+ * doc/stamp-vti: Likewise.
+ * man/Makefile.am: New file.
+ * man/ffi_call.3: New file.
+
+ * Makefile.am (EXTRA_DIST): Add src/x86/darwin64.S,
+ src/dlmalloc.c.
+ (nodist_libffi_la_SOURCES): Add X86_FREEBSD.
+
+ * configure.ac: Bump version to 3.0.8.
+ parisc*-*-linux*: Add.
+ i386-*-freebsd* | i386-*-openbsd*: Add.
+ powerpc-*-beos*: Add.
+ AM_CONDITIONAL X86_FREEBSD: Add.
+ AC_CONFIG_FILES: Add man/Makefile.
+
+ * include/ffi.h.in (FFI_FN): Change void (*)() to void (*)(void).
+
+2009-06-08 Andrew Haley <aph@redhat.com>
+
* README: Import from libffi 3.0.8.
2009-06-08 Andrew Haley <aph@redhat.com>
AUTOMAKE_OPTIONS = foreign subdir-objects
ACLOCAL_AMFLAGS = -I .. -I ../config
-SUBDIRS = include testsuite
+SUBDIRS = include testsuite man
EXTRA_DIST = LICENSE ChangeLog.v1 ChangeLog.libgcj configure.host \
src/alpha/ffi.c src/alpha/osf.S src/alpha/ffitarget.h \
src/sh/ffi.c src/sh/sysv.S src/sh/ffitarget.h \
src/sh64/ffi.c src/sh64/sysv.S src/sh64/ffitarget.h \
src/sparc/v8.S src/sparc/v9.S src/sparc/ffitarget.h \
- src/sparc/ffi.c \
+ src/sparc/ffi.c src/x86/darwin64.S \
src/x86/ffi.c src/x86/sysv.S src/x86/win32.S src/x86/darwin.S \
src/x86/ffi64.c src/x86/unix64.S src/x86/ffitarget.h \
src/pa/ffitarget.h src/pa/ffi.c src/pa/linux.S src/pa/hpux32.S \
- src/frv/ffi.c src/frv/eabi.S src/frv/ffitarget.h
+ src/frv/ffi.c src/frv/eabi.S src/frv/ffitarget.h src/dlmalloc.c
+
+info_TEXINFOS = doc/libffi.texi
## ################################################################
if X86
nodist_libffi_la_SOURCES += src/x86/ffi.c src/x86/sysv.S
endif
+if X86_FREEBSD
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if X86_WIN32
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endif
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+$(srcdir)/doc/stamp-vti: doc/libffi.texi $(top_srcdir)/configure
+ test -f doc/$(am__dirstamp) || $(MAKE) doc/$(am__dirstamp)
+ @(dir=.; test -f ./doc/libffi.texi || dir=$(srcdir); \
+ set `$(SHELL) $(srcdir)/mdate-sh $$dir/doc/libffi.texi`; \
+ echo "@set UPDATED $$1 $$2 $$3"; \
+ echo "@set UPDATED-MONTH $$2 $$3"; \
+ echo "@set EDITION $(VERSION)"; \
+ echo "@set VERSION $(VERSION)") > vti.tmp
+ @cmp -s vti.tmp $(srcdir)/doc/version.texi \
+ || (echo "Updating $(srcdir)/doc/version.texi"; \
+ cp vti.tmp $(srcdir)/doc/version.texi)
+ -@rm -f vti.tmp
+ @cp $(srcdir)/doc/version.texi $@
+
+mostlyclean-vti:
+ -rm -f vti.tmp
+
+maintainer-clean-vti:
+@MAINTAINER_MODE_TRUE@ -rm -f $(srcdir)/doc/stamp-vti $(srcdir)/doc/version.texi
+.dvi.ps:
+ TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \
+ $(DVIPS) -o $@ $<
+
uninstall-info-am:
+ @$(PRE_UNINSTALL)
+ @if (install-info --version && \
+ install-info --version 2>&1 | sed 1q | grep -i -v debian) >/dev/null 2>&1; then \
+ list='$(INFO_DEPS)'; \
+ for file in $$list; do \
+ relfile=`echo "$$file" | sed 's|^.*/||'`; \
+ echo " install-info --info-dir='$(DESTDIR)$(infodir)' --remove '$(DESTDIR)$(infodir)/$$relfile'"; \
+ install-info --info-dir="$(DESTDIR)$(infodir)" --remove "$(DESTDIR)$(infodir)/$$relfile"; \
+ done; \
+ else :; fi
+ @$(NORMAL_UNINSTALL)
+ @list='$(INFO_DEPS)'; \
+ for file in $$list; do \
+ relfile=`echo "$$file" | sed 's|^.*/||'`; \
+ relfile_i=`echo "$$relfile" | sed 's|\.info$$||;s|$$|.i|'`; \
+ (if cd "$(DESTDIR)$(infodir)"; then \
+ echo " cd '$(DESTDIR)$(infodir)' && rm -f $$relfile $$relfile-[0-9] $$relfile-[0-9][0-9] $$relfile_i[0-9] $$relfile_i[0-9][0-9]"; \
+ rm -f $$relfile $$relfile-[0-9] $$relfile-[0-9][0-9] $$relfile_i[0-9] $$relfile_i[0-9][0-9]; \
+ else :; fi); \
+ done
+
+dist-info: $(INFO_DEPS)
+ @srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+ list='$(INFO_DEPS)'; \
+ for base in $$list; do \
+ case $$base in \
+ $(srcdir)/*) base=`echo "$$base" | sed "s|^$$srcdirstrip/||"`;; \
+ esac; \
+ if test -f $$base; then d=.; else d=$(srcdir); fi; \
+ for file in $$d/$$base*; do \
+ relfile=`expr "$$file" : "$$d/\(.*\)"`; \
+ test -f $(distdir)/$$relfile || \
+ cp -p $$file $(distdir)/$$relfile; \
+ done; \
+ done
+
+mostlyclean-aminfo:
+ -rm -rf libffi.aux libffi.cp libffi.cps libffi.fn libffi.ky libffi.log \
+ libffi.pg libffi.tmp libffi.toc libffi.tp libffi.vr \
+ doc/libffi.dvi doc/libffi.pdf doc/libffi.ps doc/libffi.html
+
+maintainer-clean-aminfo:
+ @list='$(INFO_DEPS)'; for i in $$list; do \
+ i_i=`echo "$$i" | sed 's|\.info$$||;s|$$|.i|'`; \
+ echo " rm -f $$i $$i-[0-9] $$i-[0-9][0-9] $$i_i[0-9] $$i_i[0-9][0-9]"; \
+ rm -f $$i $$i-[0-9] $$i-[0-9][0-9] $$i_i[0-9] $$i_i[0-9][0-9]; \
+ done
# This directory's subdirectories are mostly independent; you can cd
# into them and run `make' without going through this Makefile.
distdir: $(DISTFILES)
$(am__remove_distdir)
mkdir $(distdir)
- $(mkdir_p) $(distdir)/.. $(distdir)/../config $(distdir)/include $(distdir)/src/alpha $(distdir)/src/arm $(distdir)/src/cris $(distdir)/src/frv $(distdir)/src/ia64 $(distdir)/src/m32r $(distdir)/src/m68k $(distdir)/src/mips $(distdir)/src/pa $(distdir)/src/powerpc $(distdir)/src/s390 $(distdir)/src/sh $(distdir)/src/sh64 $(distdir)/src/sparc $(distdir)/src/x86
+ $(mkdir_p) $(distdir)/.. $(distdir)/../config $(distdir)/doc $(distdir)/include $(distdir)/src $(distdir)/src/alpha $(distdir)/src/arm $(distdir)/src/cris $(distdir)/src/frv $(distdir)/src/ia64 $(distdir)/src/m32r $(distdir)/src/m68k $(distdir)/src/mips $(distdir)/src/pa $(distdir)/src/powerpc $(distdir)/src/s390 $(distdir)/src/sh $(distdir)/src/sh64 $(distdir)/src/sparc $(distdir)/src/x86
@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
list='$(DISTFILES)'; for file in $$list; do \
|| exit 1; \
fi; \
done
+ $(MAKE) $(AM_MAKEFLAGS) \
+ top_distdir="$(top_distdir)" distdir="$(distdir)" \
+ dist-info
-find $(distdir) -type d ! -perm -777 -exec chmod a+rwx {} \; -o \
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exit 1; } >&2
check-am: all-am
check: check-recursive
-all-am: Makefile $(LTLIBRARIES) all-multi fficonfig.h
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installdirs: installdirs-recursive
installdirs-am:
- for dir in "$(DESTDIR)$(toolexeclibdir)"; do \
+ for dir in "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(infodir)"; do \
test -z "$$dir" || $(mkdir_p) "$$dir"; \
done
install: install-recursive
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -rm -f doc/$(am__dirstamp)
-rm -f src/$(DEPDIR)/$(am__dirstamp)
-rm -f src/$(am__dirstamp)
-rm -f src/alpha/$(DEPDIR)/$(am__dirstamp)
dvi: dvi-recursive
-dvi-am:
+dvi-am: $(DVIS)
html: html-recursive
+html-am: $(HTMLS)
+
info: info-recursive
-info-am:
+info-am: $(INFO_DEPS)
-install-data-am:
+install-data-am: install-info-am
install-exec-am: install-multi install-toolexeclibLTLIBRARIES
install-info: install-info-recursive
+install-info-am: $(INFO_DEPS)
+ @$(NORMAL_INSTALL)
+ test -z "$(infodir)" || $(mkdir_p) "$(DESTDIR)$(infodir)"
+ @srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+ list='$(INFO_DEPS)'; \
+ for file in $$list; do \
+ case $$file in \
+ $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+ esac; \
+ if test -f $$file; then d=.; else d=$(srcdir); fi; \
+ file_i=`echo "$$file" | sed 's|\.info$$||;s|$$|.i|'`; \
+ for ifile in $$d/$$file $$d/$$file-[0-9] $$d/$$file-[0-9][0-9] \
+ $$d/$$file_i[0-9] $$d/$$file_i[0-9][0-9] ; do \
+ if test -f $$ifile; then \
+ relfile=`echo "$$ifile" | sed 's|^.*/||'`; \
+ echo " $(INSTALL_DATA) '$$ifile' '$(DESTDIR)$(infodir)/$$relfile'"; \
+ $(INSTALL_DATA) "$$ifile" "$(DESTDIR)$(infodir)/$$relfile"; \
+ else : ; fi; \
+ done; \
+ done
+ @$(POST_INSTALL)
+ @if (install-info --version && \
+ install-info --version 2>&1 | sed 1q | grep -i -v debian) >/dev/null 2>&1; then \
+ list='$(INFO_DEPS)'; \
+ for file in $$list; do \
+ relfile=`echo "$$file" | sed 's|^.*/||'`; \
+ echo " install-info --info-dir='$(DESTDIR)$(infodir)' '$(DESTDIR)$(infodir)/$$relfile'";\
+ install-info --info-dir="$(DESTDIR)$(infodir)" "$(DESTDIR)$(infodir)/$$relfile" || :;\
+ done; \
+ else : ; fi
install-man:
installcheck-am:
-rm -rf $(top_srcdir)/autom4te.cache
-rm -rf src/$(DEPDIR) src/alpha/$(DEPDIR) src/arm/$(DEPDIR) src/cris/$(DEPDIR) src/frv/$(DEPDIR) src/ia64/$(DEPDIR) src/m32r/$(DEPDIR) src/m68k/$(DEPDIR) src/mips/$(DEPDIR) src/pa/$(DEPDIR) src/powerpc/$(DEPDIR) src/s390/$(DEPDIR) src/sh/$(DEPDIR) src/sh64/$(DEPDIR) src/sparc/$(DEPDIR) src/x86/$(DEPDIR)
-rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
+maintainer-clean-am: distclean-am maintainer-clean-aminfo \
+ maintainer-clean-generic maintainer-clean-vti
mostlyclean: mostlyclean-multi mostlyclean-recursive
-mostlyclean-am: mostlyclean-compile mostlyclean-generic \
- mostlyclean-libtool
+mostlyclean-am: mostlyclean-aminfo mostlyclean-compile \
+ mostlyclean-generic mostlyclean-libtool mostlyclean-vti
pdf: pdf-recursive
-pdf-am:
+pdf-am: $(PDFS)
ps: ps-recursive
-ps-am:
+ps-am: $(PSS)
uninstall-am: uninstall-info-am uninstall-toolexeclibLTLIBRARIES
am--refresh check check-am clean clean-generic clean-libtool \
clean-multi clean-noinstLTLIBRARIES clean-recursive \
clean-toolexeclibLTLIBRARIES ctags ctags-recursive dist \
- dist-all dist-bzip2 dist-gzip dist-shar dist-tarZ dist-zip \
- distcheck distclean distclean-compile distclean-generic \
- distclean-hdr distclean-libtool distclean-multi \
- distclean-recursive distclean-tags distcleancheck distdir \
- distuninstallcheck dvi dvi-am html html-am info info-am \
- install install-am install-data install-data-am install-exec \
- install-exec-am install-info install-info-am install-man \
- install-multi install-strip install-toolexeclibLTLIBRARIES \
- installcheck installcheck-am installdirs installdirs-am \
- maintainer-clean maintainer-clean-generic \
- maintainer-clean-multi maintainer-clean-recursive mostlyclean \
+ dist-all dist-bzip2 dist-gzip dist-info dist-shar dist-tarZ \
+ dist-zip distcheck distclean distclean-compile \
+ distclean-generic distclean-hdr distclean-libtool \
+ distclean-multi distclean-recursive distclean-tags \
+ distcleancheck distdir distuninstallcheck dvi dvi-am html \
+ html-am info info-am install install-am install-data \
+ install-data-am install-exec install-exec-am install-info \
+ install-info-am install-man install-multi install-strip \
+ install-toolexeclibLTLIBRARIES installcheck installcheck-am \
+ installdirs installdirs-am maintainer-clean \
+ maintainer-clean-aminfo maintainer-clean-generic \
+ maintainer-clean-multi maintainer-clean-recursive \
+ maintainer-clean-vti mostlyclean mostlyclean-aminfo \
mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
- mostlyclean-multi mostlyclean-recursive pdf pdf-am ps ps-am \
- tags tags-recursive uninstall uninstall-am uninstall-info-am \
- uninstall-toolexeclibLTLIBRARIES
+ mostlyclean-multi mostlyclean-recursive mostlyclean-vti pdf \
+ pdf-am ps ps-am tags tags-recursive uninstall uninstall-am \
+ uninstall-info-am uninstall-toolexeclibLTLIBRARIES
# No install-html or install-pdf support in automake yet
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.59 for libffi 2.1.
+# Generated by GNU Autoconf 2.59 for libffi 3.0.8.
#
# Report bugs to <http://gcc.gnu.org/bugs.html>.
#
# Identity of this package.
PACKAGE_NAME='libffi'
PACKAGE_TARNAME='libffi'
-PACKAGE_VERSION='2.1'
-PACKAGE_STRING='libffi 2.1'
+PACKAGE_VERSION='3.0.8'
+PACKAGE_STRING='libffi 3.0.8'
PACKAGE_BUGREPORT='http://gcc.gnu.org/bugs.html'
# Factoring default headers for most tests.
# include <unistd.h>
#endif"
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS multi_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CFLAGS CCAS CCASFLAGS LIBTOOL SED EGREP FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM LN_S OBJDUMP ac_ct_OBJDUMP AR ac_ct_AR RANLIB ac_ct_RANLIB lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP CPPFLAGS MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT TESTSUBDIR_TRUE TESTSUBDIR_FALSE AM_RUNTESTFLAGS MIPS_TRUE MIPS_FALSE SPARC_TRUE SPARC_FALSE X86_TRUE X86_FALSE X86_WIN32_TRUE X86_WIN32_FALSE X86_DARWIN_TRUE X86_DARWIN_FALSE ALPHA_TRUE ALPHA_FALSE IA64_TRUE IA64_FALSE M32R_TRUE M32R_FALSE M68K_TRUE M68K_FALSE POWERPC_TRUE POWERPC_FALSE POWERPC_AIX_TRUE POWERPC_AIX_FALSE POWERPC_DARWIN_TRUE POWERPC_DARWIN_FALSE POWERPC_FREEBSD_TRUE POWERPC_FREEBSD_FALSE ARM_TRUE ARM_FALSE LIBFFI_CRIS_TRUE LIBFFI_CRIS_FALSE FRV_TRUE FRV_FALSE S390_TRUE S390_FALSE X86_64_TRUE X86_64_FALSE SH_TRUE SH_FALSE SH64_TRUE SH64_FALSE PA_LINUX_TRUE PA_LINUX_FALSE PA_HPUX_TRUE PA_HPUX_FALSE PA64_HPUX_TRUE PA64_HPUX_FALSE ALLOCA HAVE_LONG_DOUBLE TARGET TARGETDIR toolexecdir toolexeclibdir LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS multi_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CFLAGS CCAS CCASFLAGS LIBTOOL SED EGREP FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM LN_S OBJDUMP ac_ct_OBJDUMP AR ac_ct_AR RANLIB ac_ct_RANLIB lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP CPPFLAGS MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT TESTSUBDIR_TRUE TESTSUBDIR_FALSE AM_RUNTESTFLAGS MIPS_TRUE MIPS_FALSE SPARC_TRUE SPARC_FALSE X86_TRUE X86_FALSE X86_FREEBSD_TRUE X86_FREEBSD_FALSE X86_WIN32_TRUE X86_WIN32_FALSE X86_DARWIN_TRUE X86_DARWIN_FALSE ALPHA_TRUE ALPHA_FALSE IA64_TRUE IA64_FALSE M32R_TRUE M32R_FALSE M68K_TRUE M68K_FALSE POWERPC_TRUE POWERPC_FALSE POWERPC_AIX_TRUE POWERPC_AIX_FALSE POWERPC_DARWIN_TRUE POWERPC_DARWIN_FALSE POWERPC_FREEBSD_TRUE POWERPC_FREEBSD_FALSE ARM_TRUE ARM_FALSE LIBFFI_CRIS_TRUE LIBFFI_CRIS_FALSE FRV_TRUE FRV_FALSE S390_TRUE S390_FALSE X86_64_TRUE X86_64_FALSE SH_TRUE SH_FALSE SH64_TRUE SH64_FALSE PA_LINUX_TRUE PA_LINUX_FALSE PA_HPUX_TRUE PA_HPUX_FALSE PA64_HPUX_TRUE PA64_HPUX_FALSE ALLOCA HAVE_LONG_DOUBLE TARGET TARGETDIR toolexecdir toolexeclibdir LIBOBJS LTLIBOBJS'
ac_subst_files=''
ac_pwd=`pwd`
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
-\`configure' configures libffi 2.1 to adapt to many kinds of systems.
+\`configure' configures libffi 3.0.8 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
if test -n "$ac_init_help"; then
case $ac_init_help in
- short | recursive ) echo "Configuration of libffi 2.1:";;
+ short | recursive ) echo "Configuration of libffi 3.0.8:";;
esac
cat <<\_ACEOF
test -n "$ac_init_help" && exit 0
if $ac_init_version; then
cat <<\_ACEOF
-libffi configure 2.1
+libffi configure 3.0.8
generated by GNU Autoconf 2.59
Copyright (C) 2003 Free Software Foundation, Inc.
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
-It was created by libffi $as_me 2.1, which was
+It was created by libffi $as_me 3.0.8, which was
generated by GNU Autoconf 2.59. Invocation command line was
$ $0 $@
# Define the identity of the package.
PACKAGE='libffi'
- VERSION='2.1'
+ VERSION='3.0.8'
cat >>confdefs.h <<_ACEOF
TARGET=FRV; TARGETDIR=frv
;;
- hppa*-*-linux*)
+ hppa*-*-linux* | parisc*-*-linux*)
TARGET=PA_LINUX; TARGETDIR=pa
;;
hppa*64-*-hpux*)
TARGET=PA_HPUX; TARGETDIR=pa
;;
+ i386-*-freebsd* | i386-*-openbsd*)
+ TARGET=X86_FREEBSD; TARGETDIR=x86
+ ;;
i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
TARGET=X86_WIN32; TARGETDIR=x86
;;
TARGET=MIPS; TARGETDIR=mips
;;
- powerpc*-*-linux*)
+ powerpc*-*-linux* | powerpc-*-sysv*)
+ TARGET=POWERPC; TARGETDIR=powerpc
+ ;;
+ powerpc-*-beos*)
TARGET=POWERPC; TARGETDIR=powerpc
;;
powerpc-*-darwin*)
+if test x$TARGET = xX86_FREEBSD; then
+ X86_FREEBSD_TRUE=
+ X86_FREEBSD_FALSE='#'
+else
+ X86_FREEBSD_TRUE='#'
+ X86_FREEBSD_FALSE=
+fi
+
+
+
if test x$TARGET = xX86_WIN32; then
X86_WIN32_TRUE=
X86_WIN32_FALSE='#'
ac_config_links="$ac_config_links include/ffitarget.h:src/$TARGETDIR/ffitarget.h"
- ac_config_files="$ac_config_files include/Makefile include/ffi.h Makefile testsuite/Makefile"
+ ac_config_files="$ac_config_files include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile"
cat >confcache <<\_ACEOF
Usually this means the macro was only invoked conditionally." >&2;}
{ (exit 1); exit 1; }; }
fi
+if test -z "${X86_FREEBSD_TRUE}" && test -z "${X86_FREEBSD_FALSE}"; then
+ { { echo "$as_me:$LINENO: error: conditional \"X86_FREEBSD\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"X86_FREEBSD\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+ { (exit 1); exit 1; }; }
+fi
if test -z "${X86_WIN32_TRUE}" && test -z "${X86_WIN32_FALSE}"; then
{ { echo "$as_me:$LINENO: error: conditional \"X86_WIN32\" was never defined.
Usually this means the macro was only invoked conditionally." >&5
} >&5
cat >&5 <<_CSEOF
-This file was extended by libffi $as_me 2.1, which was
+This file was extended by libffi $as_me 3.0.8, which was
generated by GNU Autoconf 2.59. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
cat >>$CONFIG_STATUS <<_ACEOF
ac_cs_version="\\
-libffi config.status 2.1
+libffi config.status 3.0.8
configured by $0, generated by GNU Autoconf 2.59,
with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
multi_basedir="$multi_basedir"
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
CC="$CC"
-CXX="$CXX"
-GFORTRAN="$GFORTRAN"
-GCJ="$GCJ"
AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"
"include/ffi.h" ) CONFIG_FILES="$CONFIG_FILES include/ffi.h" ;;
"Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
"testsuite/Makefile" ) CONFIG_FILES="$CONFIG_FILES testsuite/Makefile" ;;
+ "man/Makefile" ) CONFIG_FILES="$CONFIG_FILES man/Makefile" ;;
"include/ffitarget.h" ) CONFIG_LINKS="$CONFIG_LINKS include/ffitarget.h:src/$TARGETDIR/ffitarget.h" ;;
"default-1" ) CONFIG_COMMANDS="$CONFIG_COMMANDS default-1" ;;
"depfiles" ) CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
s,@SPARC_FALSE@,$SPARC_FALSE,;t t
s,@X86_TRUE@,$X86_TRUE,;t t
s,@X86_FALSE@,$X86_FALSE,;t t
+s,@X86_FREEBSD_TRUE@,$X86_FREEBSD_TRUE,;t t
+s,@X86_FREEBSD_FALSE@,$X86_FREEBSD_FALSE,;t t
s,@X86_WIN32_TRUE@,$X86_WIN32_TRUE,;t t
s,@X86_WIN32_FALSE@,$X86_WIN32_FALSE,;t t
s,@X86_DARWIN_TRUE@,$X86_DARWIN_TRUE,;t t
AC_PREREQ(2.59)
-AC_INIT([libffi], [2.1], [http://gcc.gnu.org/bugs.html])
+AC_INIT([libffi], [3.0.8], [http://gcc.gnu.org/bugs.html])
AC_CONFIG_HEADERS([fficonfig.h])
AM_ENABLE_MULTILIB(, ..)
TARGET=FRV; TARGETDIR=frv
;;
- hppa*-*-linux*)
+ hppa*-*-linux* | parisc*-*-linux*)
TARGET=PA_LINUX; TARGETDIR=pa
;;
hppa*64-*-hpux*)
TARGET=PA_HPUX; TARGETDIR=pa
;;
+ i386-*-freebsd* | i386-*-openbsd*)
+ TARGET=X86_FREEBSD; TARGETDIR=x86
+ ;;
i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
TARGET=X86_WIN32; TARGETDIR=x86
;;
TARGET=MIPS; TARGETDIR=mips
;;
- powerpc*-*-linux*)
+ powerpc*-*-linux* | powerpc-*-sysv*)
+ TARGET=POWERPC; TARGETDIR=powerpc
+ ;;
+ powerpc-*-beos*)
TARGET=POWERPC; TARGETDIR=powerpc
;;
powerpc-*-darwin*)
AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
AM_CONDITIONAL(X86, test x$TARGET = xX86)
+AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
-AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)
+AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile)
AC_OUTPUT
--- /dev/null
+This is doc/libffi.info, produced by makeinfo version 4.12 from
+./doc/libffi.texi.
+
+This manual is for Libffi, a portable foreign-function interface
+library.
+
+ Copyright (C) 2008 Red Hat, Inc.
+
+ Permission is granted to copy, distribute and/or modify this
+ document under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or
+ (at your option) any later version. A copy of the license is
+ included in the section entitled "GNU General Public License".
+
+
+INFO-DIR-SECTION
+START-INFO-DIR-ENTRY
+* libffi: (libffi). Portable foreign-function interface library.
+END-INFO-DIR-ENTRY
+
+\1f
+File: libffi.info, Node: Top, Next: Introduction, Up: (dir)
+
+libffi
+******
+
+This manual is for Libffi, a portable foreign-function interface
+library.
+
+ Copyright (C) 2008 Red Hat, Inc.
+
+ Permission is granted to copy, distribute and/or modify this
+ document under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or
+ (at your option) any later version. A copy of the license is
+ included in the section entitled "GNU General Public License".
+
+
+* Menu:
+
+* Introduction:: What is libffi?
+* Using libffi:: How to use libffi.
+* Missing Features:: Things libffi can't do.
+* Index:: Index.
+
+\1f
+File: libffi.info, Node: Introduction, Next: Using libffi, Prev: Top, Up: Top
+
+1 What is libffi?
+*****************
+
+Compilers for high level languages generate code that follow certain
+conventions. These conventions are necessary, in part, for separate
+compilation to work. One such convention is the "calling convention".
+The calling convention is a set of assumptions made by the compiler
+about where function arguments will be found on entry to a function. A
+calling convention also specifies where the return value for a function
+is found. The calling convention is also sometimes called the "ABI" or
+"Application Binary Interface".
+
+ Some programs may not know at the time of compilation what arguments
+are to be passed to a function. For instance, an interpreter may be
+told at run-time about the number and types of arguments used to call a
+given function. `Libffi' can be used in such programs to provide a
+bridge from the interpreter program to compiled code.
+
+ The `libffi' library provides a portable, high level programming
+interface to various calling conventions. This allows a programmer to
+call any function specified by a call interface description at run time.
+
+ FFI stands for Foreign Function Interface. A foreign function
+interface is the popular name for the interface that allows code
+written in one language to call code written in another language. The
+`libffi' library really only provides the lowest, machine dependent
+layer of a fully featured foreign function interface. A layer must
+exist above `libffi' that handles type conversions for values passed
+between the two languages.
+
+\1f
+File: libffi.info, Node: Using libffi, Next: Missing Features, Prev: Introduction, Up: Top
+
+2 Using libffi
+**************
+
+* Menu:
+
+* The Basics:: The basic libffi API.
+* Simple Example:: A simple example.
+* Types:: libffi type descriptions.
+* Multiple ABIs:: Different passing styles on one platform.
+* The Closure API:: Writing a generic function.
+
+\1f
+File: libffi.info, Node: The Basics, Next: Simple Example, Up: Using libffi
+
+2.1 The Basics
+==============
+
+`Libffi' assumes that you have a pointer to the function you wish to
+call and that you know the number and types of arguments to pass it, as
+well as the return type of the function.
+
+ The first thing you must do is create an `ffi_cif' object that
+matches the signature of the function you wish to call. This is a
+separate step because it is common to make multiple calls using a
+single `ffi_cif'. The "cif" in `ffi_cif' stands for Call InterFace.
+To prepare a call interface object, use the function `ffi_prep_cif'.
+
+ -- Function: ffi_status ffi_prep_cif (ffi_cif *CIF, ffi_abi ABI,
+ unsigned int NARGS, ffi_type *RTYPE, ffi_type **ARGTYPES)
+ This initializes CIF according to the given parameters.
+
+ ABI is the ABI to use; normally `FFI_DEFAULT_ABI' is what you
+ want. *note Multiple ABIs:: for more information.
+
+ NARGS is the number of arguments that this function accepts.
+ `libffi' does not yet handle varargs functions; see *note Missing
+ Features:: for more information.
+
+ RTYPE is a pointer to an `ffi_type' structure that describes the
+ return type of the function. *Note Types::.
+
+ ARGTYPES is a vector of `ffi_type' pointers. ARGTYPES must have
+ NARGS elements. If NARGS is 0, this argument is ignored.
+
+ `ffi_prep_cif' returns a `libffi' status code, of type
+ `ffi_status'. This will be either `FFI_OK' if everything worked
+ properly; `FFI_BAD_TYPEDEF' if one of the `ffi_type' objects is
+ incorrect; or `FFI_BAD_ABI' if the ABI parameter is invalid.
+
+ To call a function using an initialized `ffi_cif', use the
+`ffi_call' function:
+
+ -- Function: void ffi_call (ffi_cif *CIF, void *FN, void *RVALUE, void
+ **AVALUES)
+ This calls the function FN according to the description given in
+ CIF. CIF must have already been prepared using `ffi_prep_cif'.
+
+ RVALUE is a pointer to a chunk of memory that will hold the result
+ of the function call. This must be large enough to hold the
+ result and must be suitably aligned; it is the caller's
+ responsibility to ensure this. If CIF declares that the function
+ returns `void' (using `ffi_type_void'), then RVALUE is ignored.
+ If RVALUE is `NULL', then the return value is discarded.
+
+ AVALUES is a vector of `void *' pointers that point to the memory
+ locations holding the argument values for a call. If CIF declares
+ that the function has no arguments (i.e., NARGS was 0), then
+ AVALUES is ignored.
+
+\1f
+File: libffi.info, Node: Simple Example, Next: Types, Prev: The Basics, Up: Using libffi
+
+2.2 Simple Example
+==================
+
+Here is a trivial example that calls `puts' a few times.
+
+ #include <stdio.h>
+ #include <ffi.h>
+
+ int main()
+ {
+ ffi_cif cif;
+ ffi_type *args[1];
+ void *values[1];
+ char *s;
+ int rc;
+
+ /* Initialize the argument info vectors */
+ args[0] = &ffi_type_pointer;
+ values[0] = &s;
+
+ /* Initialize the cif */
+ if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
+ &ffi_type_uint, args) == FFI_OK)
+ {
+ s = "Hello World!";
+ ffi_call(&cif, puts, &rc, values);
+ /* rc now holds the result of the call to puts */
+
+ /* values holds a pointer to the function's arg, so to
+ call puts() again all we need to do is change the
+ value of s */
+ s = "This is cool!";
+ ffi_call(&cif, puts, &rc, values);
+ }
+
+ return 0;
+ }
+
+\1f
+File: libffi.info, Node: Types, Next: Multiple ABIs, Prev: Simple Example, Up: Using libffi
+
+2.3 Types
+=========
+
+* Menu:
+
+* Primitive Types:: Built-in types.
+* Structures:: Structure types.
+* Type Example:: Structure type example.
+
+\1f
+File: libffi.info, Node: Primitive Types, Next: Structures, Up: Types
+
+2.3.1 Primitive Types
+---------------------
+
+`Libffi' provides a number of built-in type descriptors that can be
+used to describe argument and return types:
+
+`ffi_type_void'
+ The type `void'. This cannot be used for argument types, only for
+ return values.
+
+`ffi_type_uint8'
+ An unsigned, 8-bit integer type.
+
+`ffi_type_sint8'
+ A signed, 8-bit integer type.
+
+`ffi_type_uint16'
+ An unsigned, 16-bit integer type.
+
+`ffi_type_sint16'
+ A signed, 16-bit integer type.
+
+`ffi_type_uint32'
+ An unsigned, 32-bit integer type.
+
+`ffi_type_sint32'
+ A signed, 32-bit integer type.
+
+`ffi_type_uint64'
+ An unsigned, 64-bit integer type.
+
+`ffi_type_sint64'
+ A signed, 64-bit integer type.
+
+`ffi_type_float'
+ The C `float' type.
+
+`ffi_type_double'
+ The C `double' type.
+
+`ffi_type_uchar'
+ The C `unsigned char' type.
+
+`ffi_type_schar'
+ The C `signed char' type. (Note that there is not an exact
+ equivalent to the C `char' type in `libffi'; ordinarily you should
+ either use `ffi_type_schar' or `ffi_type_uchar' depending on
+ whether `char' is signed.)
+
+`ffi_type_ushort'
+ The C `unsigned short' type.
+
+`ffi_type_sshort'
+ The C `short' type.
+
+`ffi_type_uint'
+ The C `unsigned int' type.
+
+`ffi_type_sint'
+ The C `int' type.
+
+`ffi_type_ulong'
+ The C `unsigned long' type.
+
+`ffi_type_slong'
+ The C `long' type.
+
+`ffi_type_longdouble'
+ On platforms that have a C `long double' type, this is defined.
+ On other platforms, it is not.
+
+`ffi_type_pointer'
+ A generic `void *' pointer. You should use this for all pointers,
+ regardless of their real type.
+
+ Each of these is of type `ffi_type', so you must take the address
+when passing to `ffi_prep_cif'.
+
+\1f
+File: libffi.info, Node: Structures, Next: Type Example, Prev: Primitive Types, Up: Types
+
+2.3.2 Structures
+----------------
+
+Although `libffi' has no special support for unions or bit-fields, it
+is perfectly happy passing structures back and forth. You must first
+describe the structure to `libffi' by creating a new `ffi_type' object
+for it.
+
+ -- ffi_type:
+ The `ffi_type' has the following members:
+ `size_t size'
+ This is set by `libffi'; you should initialize it to zero.
+
+ `unsigned short alignment'
+ This is set by `libffi'; you should initialize it to zero.
+
+ `unsigned short type'
+ For a structure, this should be set to `FFI_TYPE_STRUCT'.
+
+ `ffi_type **elements'
+ This is a `NULL'-terminated array of pointers to `ffi_type'
+ objects. There is one element per field of the struct.
+
+\1f
+File: libffi.info, Node: Type Example, Prev: Structures, Up: Types
+
+2.3.3 Type Example
+------------------
+
+The following example initializes a `ffi_type' object representing the
+`tm' struct from Linux's `time.h'.
+
+ Here is how the struct is defined:
+
+ struct tm {
+ int tm_sec;
+ int tm_min;
+ int tm_hour;
+ int tm_mday;
+ int tm_mon;
+ int tm_year;
+ int tm_wday;
+ int tm_yday;
+ int tm_isdst;
+ /* Those are for future use. */
+ long int __tm_gmtoff__;
+ __const char *__tm_zone__;
+ };
+
+ Here is the corresponding code to describe this struct to `libffi':
+
+ {
+ ffi_type tm_type;
+ ffi_type *tm_type_elements[12];
+ int i;
+
+ tm_type.size = tm_type.alignment = 0;
+ tm_type.elements = &tm_type_elements;
+
+ for (i = 0; i < 9; i++)
+ tm_type_elements[i] = &ffi_type_sint;
+
+ tm_type_elements[9] = &ffi_type_slong;
+ tm_type_elements[10] = &ffi_type_pointer;
+ tm_type_elements[11] = NULL;
+
+ /* tm_type can now be used to represent tm argument types and
+ return types for ffi_prep_cif() */
+ }
+
+\1f
+File: libffi.info, Node: Multiple ABIs, Next: The Closure API, Prev: Types, Up: Using libffi
+
+2.4 Multiple ABIs
+=================
+
+A given platform may provide multiple different ABIs at once. For
+instance, the x86 platform has both `stdcall' and `fastcall' functions.
+
+ `libffi' provides some support for this. However, this is
+necessarily platform-specific.
+
+\1f
+File: libffi.info, Node: The Closure API, Prev: Multiple ABIs, Up: Using libffi
+
+2.5 The Closure API
+===================
+
+`libffi' also provides a way to write a generic function - a function
+that can accept and decode any combination of arguments. This can be
+useful when writing an interpreter, or to provide wrappers for
+arbitrary functions.
+
+ This facility is called the "closure API". Closures are not
+supported on all platforms; you can check the `FFI_CLOSURES' define to
+determine whether they are supported on the current platform.
+
+ Because closures work by assembling a tiny function at runtime, they
+require special allocation on platforms that have a non-executable
+heap. Memory management for closures is handled by a pair of functions:
+
+ -- Function: void *ffi_closure_alloc (size_t SIZE, void **CODE)
+ Allocate a chunk of memory holding SIZE bytes. This returns a
+ pointer to the writable address, and sets *CODE to the
+ corresponding executable address.
+
+ SIZE should be sufficient to hold a `ffi_closure' object.
+
+ -- Function: void ffi_closure_free (void *WRITABLE)
+ Free memory allocated using `ffi_closure_alloc'. The argument is
+ the writable address that was returned.
+
+ Once you have allocated the memory for a closure, you must construct
+a `ffi_cif' describing the function call. Finally you can prepare the
+closure function:
+
+ -- Function: ffi_status ffi_prep_closure_loc (ffi_closure *CLOSURE,
+ ffi_cif *CIF, void (*FUN) (ffi_cif *CIF, void *RET, void
+ **ARGS, void *USER_DATA), void *USER_DATA, void *CODELOC)
+ Prepare a closure function.
+
+ CLOSURE is the address of a `ffi_closure' object; this is the
+ writable address returned by `ffi_closure_alloc'.
+
+ CIF is the `ffi_cif' describing the function parameters.
+
+ USER_DATA is an arbitrary datum that is passed, uninterpreted, to
+ your closure function.
+
+ CODELOC is the executable address returned by `ffi_closure_alloc'.
+
+ FUN is the function which will be called when the closure is
+ invoked. It is called with the arguments:
+ CIF
+ The `ffi_cif' passed to `ffi_prep_closure_loc'.
+
+ RET
+ A pointer to the memory used for the function's return value.
+ FUN must fill this, unless the function is declared as
+ returning `void'.
+
+ ARGS
+ A vector of pointers to memory holding the arguments to the
+ function.
+
+ USER_DATA
+ The same USER_DATA that was passed to `ffi_prep_closure_loc'.
+
+ `ffi_prep_closure_loc' will return `FFI_OK' if everything went ok,
+ and something else on error.
+
+ After calling `ffi_prep_closure_loc', you can cast CODELOC to the
+ appropriate pointer-to-function type.
+
+ You may see old code referring to `ffi_prep_closure'. This function
+is deprecated, as it cannot handle the need for separate writable and
+executable addresses.
+
+\1f
+File: libffi.info, Node: Missing Features, Next: Index, Prev: Using libffi, Up: Top
+
+3 Missing Features
+******************
+
+`libffi' is missing a few features. We welcome patches to add support
+for these.
+
+ * There is no support for calling varargs functions. This may work
+ on some platforms, depending on how the ABI is defined, but it is
+ not reliable.
+
+ * There is no support for bit fields in structures.
+
+ * The closure API is
+
+ * The "raw" API is undocumented.
+
+\1f
+File: libffi.info, Node: Index, Prev: Missing Features, Up: Top
+
+Index
+*****
+
+\0\b[index\0\b]
+* Menu:
+
+* : Structures. (line 12)
+* ABI: Introduction. (line 13)
+* Application Binary Interface: Introduction. (line 13)
+* calling convention: Introduction. (line 13)
+* cif: The Basics. (line 14)
+* closure API: The Closure API. (line 13)
+* closures: The Closure API. (line 13)
+* FFI: Introduction. (line 31)
+* ffi_call: The Basics. (line 41)
+* ffi_closure_alloca: The Closure API. (line 19)
+* ffi_closure_free: The Closure API. (line 26)
+* FFI_CLOSURES: The Closure API. (line 13)
+* ffi_prep_cif: The Basics. (line 16)
+* ffi_prep_closure_loc: The Closure API. (line 34)
+* ffi_status <1>: The Closure API. (line 37)
+* ffi_status: The Basics. (line 18)
+* ffi_type: Structures. (line 11)
+* ffi_type_double: Primitive Types. (line 41)
+* ffi_type_float: Primitive Types. (line 38)
+* ffi_type_longdouble: Primitive Types. (line 71)
+* ffi_type_pointer: Primitive Types. (line 75)
+* ffi_type_schar: Primitive Types. (line 47)
+* ffi_type_sint: Primitive Types. (line 62)
+* ffi_type_sint16: Primitive Types. (line 23)
+* ffi_type_sint32: Primitive Types. (line 29)
+* ffi_type_sint64: Primitive Types. (line 35)
+* ffi_type_sint8: Primitive Types. (line 17)
+* ffi_type_slong: Primitive Types. (line 68)
+* ffi_type_sshort: Primitive Types. (line 56)
+* ffi_type_uchar: Primitive Types. (line 44)
+* ffi_type_uint: Primitive Types. (line 59)
+* ffi_type_uint16: Primitive Types. (line 20)
+* ffi_type_uint32: Primitive Types. (line 26)
+* ffi_type_uint64: Primitive Types. (line 32)
+* ffi_type_uint8: Primitive Types. (line 14)
+* ffi_type_ulong: Primitive Types. (line 65)
+* ffi_type_ushort: Primitive Types. (line 53)
+* ffi_type_void: Primitive Types. (line 10)
+* Foreign Function Interface: Introduction. (line 31)
+* void <1>: The Closure API. (line 20)
+* void: The Basics. (line 43)
+
+
+\1f
+Tag Table:
+Node: Top\7f670
+Node: Introduction\7f1406
+Node: Using libffi\7f3042
+Node: The Basics\7f3477
+Node: Simple Example\7f6084
+Node: Types\7f7111
+Node: Primitive Types\7f7394
+Node: Structures\7f9214
+Node: Type Example\7f10074
+Node: Multiple ABIs\7f11297
+Node: The Closure API\7f11668
+Node: Missing Features\7f14588
+Node: Index\7f15081
+\1f
+End Tag Table
--- /dev/null
+\input texinfo @c -*-texinfo-*-
+@c %**start of header
+@setfilename libffi.info
+@settitle libffi
+@setchapternewpage off
+@c %**end of header
+
+@c Merge the standard indexes into a single one.
+@syncodeindex fn cp
+@syncodeindex vr cp
+@syncodeindex ky cp
+@syncodeindex pg cp
+@syncodeindex tp cp
+
+@include version.texi
+
+@copying
+
+This manual is for Libffi, a portable foreign-function interface
+library.
+
+Copyright @copyright{} 2008 Red Hat, Inc.
+
+@quotation
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version. A copy of the license is included in the
+section entitled ``GNU General Public License''.
+
+@end quotation
+@end copying
+
+@dircategory
+@direntry
+* libffi: (libffi). Portable foreign-function interface library.
+@end direntry
+
+@titlepage
+@title Libffi
+@page
+@vskip 0pt plus 1filll
+@insertcopying
+@end titlepage
+
+
+@ifnottex
+@node Top
+@top libffi
+
+@insertcopying
+
+@menu
+* Introduction:: What is libffi?
+* Using libffi:: How to use libffi.
+* Missing Features:: Things libffi can't do.
+* Index:: Index.
+@end menu
+
+@end ifnottex
+
+
+@node Introduction
+@chapter What is libffi?
+
+Compilers for high level languages generate code that follow certain
+conventions. These conventions are necessary, in part, for separate
+compilation to work. One such convention is the @dfn{calling
+convention}. The calling convention is a set of assumptions made by
+the compiler about where function arguments will be found on entry to
+a function. A calling convention also specifies where the return
+value for a function is found. The calling convention is also
+sometimes called the @dfn{ABI} or @dfn{Application Binary Interface}.
+@cindex calling convention
+@cindex ABI
+@cindex Application Binary Interface
+
+Some programs may not know at the time of compilation what arguments
+are to be passed to a function. For instance, an interpreter may be
+told at run-time about the number and types of arguments used to call
+a given function. @samp{Libffi} can be used in such programs to
+provide a bridge from the interpreter program to compiled code.
+
+The @samp{libffi} library provides a portable, high level programming
+interface to various calling conventions. This allows a programmer to
+call any function specified by a call interface description at run
+time.
+
+@acronym{FFI} stands for Foreign Function Interface. A foreign
+function interface is the popular name for the interface that allows
+code written in one language to call code written in another language.
+The @samp{libffi} library really only provides the lowest, machine
+dependent layer of a fully featured foreign function interface. A
+layer must exist above @samp{libffi} that handles type conversions for
+values passed between the two languages.
+@cindex FFI
+@cindex Foreign Function Interface
+
+
+@node Using libffi
+@chapter Using libffi
+
+@menu
+* The Basics:: The basic libffi API.
+* Simple Example:: A simple example.
+* Types:: libffi type descriptions.
+* Multiple ABIs:: Different passing styles on one platform.
+* The Closure API:: Writing a generic function.
+@end menu
+
+
+@node The Basics
+@section The Basics
+
+@samp{Libffi} assumes that you have a pointer to the function you wish
+to call and that you know the number and types of arguments to pass
+it, as well as the return type of the function.
+
+The first thing you must do is create an @code{ffi_cif} object that
+matches the signature of the function you wish to call. This is a
+separate step because it is common to make multiple calls using a
+single @code{ffi_cif}. The @dfn{cif} in @code{ffi_cif} stands for
+Call InterFace. To prepare a call interface object, use the function
+@code{ffi_prep_cif}.
+@cindex cif
+
+@findex ffi_prep_cif
+@defun ffi_status ffi_prep_cif (ffi_cif *@var{cif}, ffi_abi @var{abi}, unsigned int @var{nargs}, ffi_type *@var{rtype}, ffi_type **@var{argtypes})
+This initializes @var{cif} according to the given parameters.
+
+@var{abi} is the ABI to use; normally @code{FFI_DEFAULT_ABI} is what
+you want. @ref{Multiple ABIs} for more information.
+
+@var{nargs} is the number of arguments that this function accepts.
+@samp{libffi} does not yet handle varargs functions; see @ref{Missing
+Features} for more information.
+
+@var{rtype} is a pointer to an @code{ffi_type} structure that
+describes the return type of the function. @xref{Types}.
+
+@var{argtypes} is a vector of @code{ffi_type} pointers.
+@var{argtypes} must have @var{nargs} elements. If @var{nargs} is 0,
+this argument is ignored.
+
+@code{ffi_prep_cif} returns a @code{libffi} status code, of type
+@code{ffi_status}. This will be either @code{FFI_OK} if everything
+worked properly; @code{FFI_BAD_TYPEDEF} if one of the @code{ffi_type}
+objects is incorrect; or @code{FFI_BAD_ABI} if the @var{abi} parameter
+is invalid.
+@end defun
+
+
+To call a function using an initialized @code{ffi_cif}, use the
+@code{ffi_call} function:
+
+@findex ffi_call
+@defun void ffi_call (ffi_cif *@var{cif}, void *@var{fn}, void *@var{rvalue}, void **@var{avalues})
+This calls the function @var{fn} according to the description given in
+@var{cif}. @var{cif} must have already been prepared using
+@code{ffi_prep_cif}.
+
+@var{rvalue} is a pointer to a chunk of memory that will hold the
+result of the function call. This must be large enough to hold the
+result and must be suitably aligned; it is the caller's responsibility
+to ensure this. If @var{cif} declares that the function returns
+@code{void} (using @code{ffi_type_void}), then @var{rvalue} is
+ignored. If @var{rvalue} is @samp{NULL}, then the return value is
+discarded.
+
+@var{avalues} is a vector of @code{void *} pointers that point to the
+memory locations holding the argument values for a call. If @var{cif}
+declares that the function has no arguments (i.e., @var{nargs} was 0),
+then @var{avalues} is ignored.
+@end defun
+
+
+@node Simple Example
+@section Simple Example
+
+Here is a trivial example that calls @code{puts} a few times.
+
+@example
+#include <stdio.h>
+#include <ffi.h>
+
+int main()
+@{
+ ffi_cif cif;
+ ffi_type *args[1];
+ void *values[1];
+ char *s;
+ int rc;
+
+ /* Initialize the argument info vectors */
+ args[0] = &ffi_type_pointer;
+ values[0] = &s;
+
+ /* Initialize the cif */
+ if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
+ &ffi_type_uint, args) == FFI_OK)
+ @{
+ s = "Hello World!";
+ ffi_call(&cif, puts, &rc, values);
+ /* rc now holds the result of the call to puts */
+
+ /* values holds a pointer to the function's arg, so to
+ call puts() again all we need to do is change the
+ value of s */
+ s = "This is cool!";
+ ffi_call(&cif, puts, &rc, values);
+ @}
+
+ return 0;
+@}
+@end example
+
+
+@node Types
+@section Types
+
+@menu
+* Primitive Types:: Built-in types.
+* Structures:: Structure types.
+* Type Example:: Structure type example.
+@end menu
+
+@node Primitive Types
+@subsection Primitive Types
+
+@code{Libffi} provides a number of built-in type descriptors that can
+be used to describe argument and return types:
+
+@table @code
+@item ffi_type_void
+@tindex ffi_type_void
+The type @code{void}. This cannot be used for argument types, only
+for return values.
+
+@item ffi_type_uint8
+@tindex ffi_type_uint8
+An unsigned, 8-bit integer type.
+
+@item ffi_type_sint8
+@tindex ffi_type_sint8
+A signed, 8-bit integer type.
+
+@item ffi_type_uint16
+@tindex ffi_type_uint16
+An unsigned, 16-bit integer type.
+
+@item ffi_type_sint16
+@tindex ffi_type_sint16
+A signed, 16-bit integer type.
+
+@item ffi_type_uint32
+@tindex ffi_type_uint32
+An unsigned, 32-bit integer type.
+
+@item ffi_type_sint32
+@tindex ffi_type_sint32
+A signed, 32-bit integer type.
+
+@item ffi_type_uint64
+@tindex ffi_type_uint64
+An unsigned, 64-bit integer type.
+
+@item ffi_type_sint64
+@tindex ffi_type_sint64
+A signed, 64-bit integer type.
+
+@item ffi_type_float
+@tindex ffi_type_float
+The C @code{float} type.
+
+@item ffi_type_double
+@tindex ffi_type_double
+The C @code{double} type.
+
+@item ffi_type_uchar
+@tindex ffi_type_uchar
+The C @code{unsigned char} type.
+
+@item ffi_type_schar
+@tindex ffi_type_schar
+The C @code{signed char} type. (Note that there is not an exact
+equivalent to the C @code{char} type in @code{libffi}; ordinarily you
+should either use @code{ffi_type_schar} or @code{ffi_type_uchar}
+depending on whether @code{char} is signed.)
+
+@item ffi_type_ushort
+@tindex ffi_type_ushort
+The C @code{unsigned short} type.
+
+@item ffi_type_sshort
+@tindex ffi_type_sshort
+The C @code{short} type.
+
+@item ffi_type_uint
+@tindex ffi_type_uint
+The C @code{unsigned int} type.
+
+@item ffi_type_sint
+@tindex ffi_type_sint
+The C @code{int} type.
+
+@item ffi_type_ulong
+@tindex ffi_type_ulong
+The C @code{unsigned long} type.
+
+@item ffi_type_slong
+@tindex ffi_type_slong
+The C @code{long} type.
+
+@item ffi_type_longdouble
+@tindex ffi_type_longdouble
+On platforms that have a C @code{long double} type, this is defined.
+On other platforms, it is not.
+
+@item ffi_type_pointer
+@tindex ffi_type_pointer
+A generic @code{void *} pointer. You should use this for all
+pointers, regardless of their real type.
+@end table
+
+Each of these is of type @code{ffi_type}, so you must take the address
+when passing to @code{ffi_prep_cif}.
+
+
+@node Structures
+@subsection Structures
+
+Although @samp{libffi} has no special support for unions or
+bit-fields, it is perfectly happy passing structures back and forth.
+You must first describe the structure to @samp{libffi} by creating a
+new @code{ffi_type} object for it.
+
+@tindex ffi_type
+@deftp ffi_type
+The @code{ffi_type} has the following members:
+@table @code
+@item size_t size
+This is set by @code{libffi}; you should initialize it to zero.
+
+@item unsigned short alignment
+This is set by @code{libffi}; you should initialize it to zero.
+
+@item unsigned short type
+For a structure, this should be set to @code{FFI_TYPE_STRUCT}.
+
+@item ffi_type **elements
+This is a @samp{NULL}-terminated array of pointers to @code{ffi_type}
+objects. There is one element per field of the struct.
+@end table
+@end deftp
+
+
+@node Type Example
+@subsection Type Example
+
+The following example initializes a @code{ffi_type} object
+representing the @code{tm} struct from Linux's @file{time.h}.
+
+Here is how the struct is defined:
+
+@example
+struct tm @{
+ int tm_sec;
+ int tm_min;
+ int tm_hour;
+ int tm_mday;
+ int tm_mon;
+ int tm_year;
+ int tm_wday;
+ int tm_yday;
+ int tm_isdst;
+ /* Those are for future use. */
+ long int __tm_gmtoff__;
+ __const char *__tm_zone__;
+@};
+@end example
+
+Here is the corresponding code to describe this struct to
+@code{libffi}:
+
+@example
+ @{
+ ffi_type tm_type;
+ ffi_type *tm_type_elements[12];
+ int i;
+
+ tm_type.size = tm_type.alignment = 0;
+ tm_type.elements = &tm_type_elements;
+
+ for (i = 0; i < 9; i++)
+ tm_type_elements[i] = &ffi_type_sint;
+
+ tm_type_elements[9] = &ffi_type_slong;
+ tm_type_elements[10] = &ffi_type_pointer;
+ tm_type_elements[11] = NULL;
+
+ /* tm_type can now be used to represent tm argument types and
+ return types for ffi_prep_cif() */
+ @}
+@end example
+
+
+@node Multiple ABIs
+@section Multiple ABIs
+
+A given platform may provide multiple different ABIs at once. For
+instance, the x86 platform has both @samp{stdcall} and @samp{fastcall}
+functions.
+
+@code{libffi} provides some support for this. However, this is
+necessarily platform-specific.
+
+@c FIXME: document the platforms
+
+@node The Closure API
+@section The Closure API
+
+@code{libffi} also provides a way to write a generic function -- a
+function that can accept and decode any combination of arguments.
+This can be useful when writing an interpreter, or to provide wrappers
+for arbitrary functions.
+
+This facility is called the @dfn{closure API}. Closures are not
+supported on all platforms; you can check the @code{FFI_CLOSURES}
+define to determine whether they are supported on the current
+platform.
+@cindex closures
+@cindex closure API
+@findex FFI_CLOSURES
+
+Because closures work by assembling a tiny function at runtime, they
+require special allocation on platforms that have a non-executable
+heap. Memory management for closures is handled by a pair of
+functions:
+
+@findex ffi_closure_alloca
+@defun void *ffi_closure_alloc (size_t @var{size}, void **@var{code})
+Allocate a chunk of memory holding @var{size} bytes. This returns a
+pointer to the writable address, and sets *@var{code} to the
+corresponding executable address.
+
+@var{size} should be sufficient to hold a @code{ffi_closure} object.
+@end defun
+
+@findex ffi_closure_free
+@defun void ffi_closure_free (void *@var{writable})
+Free memory allocated using @code{ffi_closure_alloc}. The argument is
+the writable address that was returned.
+@end defun
+
+
+Once you have allocated the memory for a closure, you must construct a
+@code{ffi_cif} describing the function call. Finally you can prepare
+the closure function:
+
+@findex ffi_prep_closure_loc
+@defun ffi_status ffi_prep_closure_loc (ffi_closure *@var{closure}, ffi_cif *@var{cif}, void (*@var{fun}) (ffi_cif *@var{cif}, void *@var{ret}, void **@var{args}, void *@var{user_data}), void *@var{user_data}, void *@var{codeloc})
+Prepare a closure function.
+
+@var{closure} is the address of a @code{ffi_closure} object; this is
+the writable address returned by @code{ffi_closure_alloc}.
+
+@var{cif} is the @code{ffi_cif} describing the function parameters.
+
+@var{user_data} is an arbitrary datum that is passed, uninterpreted,
+to your closure function.
+
+@var{codeloc} is the executable address returned by
+@code{ffi_closure_alloc}.
+
+@var{fun} is the function which will be called when the closure is
+invoked. It is called with the arguments:
+@table @var
+@item cif
+The @code{ffi_cif} passed to @code{ffi_prep_closure_loc}.
+
+@item ret
+A pointer to the memory used for the function's return value.
+@var{fun} must fill this, unless the function is declared as returning
+@code{void}.
+@c FIXME: is this NULL for void-returning functions?
+
+@item args
+A vector of pointers to memory holding the arguments to the function.
+
+@item user_data
+The same @var{user_data} that was passed to
+@code{ffi_prep_closure_loc}.
+@end table
+
+@code{ffi_prep_closure_loc} will return @code{FFI_OK} if everything
+went ok, and something else on error.
+@c FIXME: what?
+
+After calling @code{ffi_prep_closure_loc}, you can cast @var{codeloc}
+to the appropriate pointer-to-function type.
+@end defun
+
+@c FIXME: example
+
+You may see old code referring to @code{ffi_prep_closure}. This
+function is deprecated, as it cannot handle the need for separate
+writable and executable addresses.
+
+
+@node Missing Features
+@chapter Missing Features
+
+@code{libffi} is missing a few features. We welcome patches to add
+support for these.
+
+@itemize @bullet
+@item
+There is no support for calling varargs functions. This may work on
+some platforms, depending on how the ABI is defined, but it is not
+reliable.
+
+@item
+There is no support for bit fields in structures.
+
+@item
+The closure API is
+
+@item
+The ``raw'' API is undocumented.
+@c argument promotion?
+@c unions?
+@c anything else?
+@end itemize
+
+
+@node Index
+@unnumbered Index
+
+@printindex cp
+
+@bye
--- /dev/null
+@set UPDATED 14 February 2008
+@set UPDATED-MONTH February 2008
+@set EDITION 3.0.8
+@set VERSION 3.0.8
--- /dev/null
+@set UPDATED 14 February 2008
+@set UPDATED-MONTH February 2008
+@set EDITION 3.0.8
+@set VERSION 3.0.8
X86_DARWIN_FALSE = @X86_DARWIN_FALSE@
X86_DARWIN_TRUE = @X86_DARWIN_TRUE@
X86_FALSE = @X86_FALSE@
+X86_FREEBSD_FALSE = @X86_FREEBSD_FALSE@
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X86_TRUE = @X86_TRUE@
X86_WIN32_FALSE = @X86_WIN32_FALSE@
X86_WIN32_TRUE = @X86_WIN32_TRUE@
/* -----------------------------------------------------------------*-C-*-
- libffi @VERSION@ - Copyright (c) 1996-2003, 2007 Red Hat, Inc.
+ libffi @VERSION@ - Copyright (c) 1996-2003, 2007, 2008 Red Hat, Inc.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
void **avalue);
/* Useful for eliminating compiler warnings */
-#define FFI_FN(f) ((void (*)())f)
+#define FFI_FN(f) ((void (*)(void))f)
/* ---- Definitions shared with assembly code ---------------------------- */
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+
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+# This Makefile.in is free software; the Free Software Foundation
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
+ -rm -rf .libs _libs
+
+distclean-libtool:
+ -rm -f libtool
+uninstall-info-am:
+install-man3: $(man3_MANS) $(man_MANS)
+ @$(NORMAL_INSTALL)
+ test -z "$(man3dir)" || $(mkdir_p) "$(DESTDIR)$(man3dir)"
+ @list='$(man3_MANS) $(dist_man3_MANS) $(nodist_man3_MANS)'; \
+ l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
+ for i in $$l2; do \
+ case "$$i" in \
+ *.3*) list="$$list $$i" ;; \
+ esac; \
+ done; \
+ for i in $$list; do \
+ if test -f $(srcdir)/$$i; then file=$(srcdir)/$$i; \
+ else file=$$i; fi; \
+ ext=`echo $$i | sed -e 's/^.*\\.//'`; \
+ case "$$ext" in \
+ 3*) ;; \
+ *) ext='3' ;; \
+ esac; \
+ inst=`echo $$i | sed -e 's/\\.[0-9a-z]*$$//'`; \
+ inst=`echo $$inst | sed -e 's/^.*\///'`; \
+ inst=`echo $$inst | sed '$(transform)'`.$$ext; \
+ echo " $(INSTALL_DATA) '$$file' '$(DESTDIR)$(man3dir)/$$inst'"; \
+ $(INSTALL_DATA) "$$file" "$(DESTDIR)$(man3dir)/$$inst"; \
+ done
+uninstall-man3:
+ @$(NORMAL_UNINSTALL)
+ @list='$(man3_MANS) $(dist_man3_MANS) $(nodist_man3_MANS)'; \
+ l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
+ for i in $$l2; do \
+ case "$$i" in \
+ *.3*) list="$$list $$i" ;; \
+ esac; \
+ done; \
+ for i in $$list; do \
+ ext=`echo $$i | sed -e 's/^.*\\.//'`; \
+ case "$$ext" in \
+ 3*) ;; \
+ *) ext='3' ;; \
+ esac; \
+ inst=`echo $$i | sed -e 's/\\.[0-9a-z]*$$//'`; \
+ inst=`echo $$inst | sed -e 's/^.*\///'`; \
+ inst=`echo $$inst | sed '$(transform)'`.$$ext; \
+ echo " rm -f '$(DESTDIR)$(man3dir)/$$inst'"; \
+ rm -f "$(DESTDIR)$(man3dir)/$$inst"; \
+ done
+tags: TAGS
+TAGS:
+
+ctags: CTAGS
+CTAGS:
+
+
+distdir: $(DISTFILES)
+ @srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+ topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
+ list='$(DISTFILES)'; for file in $$list; do \
+ case $$file in \
+ $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+ $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+ esac; \
+ if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+ dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+ if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+ dir="/$$dir"; \
+ $(mkdir_p) "$(distdir)$$dir"; \
+ else \
+ dir=''; \
+ fi; \
+ if test -d $$d/$$file; then \
+ if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+ cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+ fi; \
+ cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+ else \
+ test -f $(distdir)/$$file \
+ || cp -p $$d/$$file $(distdir)/$$file \
+ || exit 1; \
+ fi; \
+ done
+check-am: all-am
+check: check-am
+all-am: Makefile $(MANS)
+installdirs:
+ for dir in "$(DESTDIR)$(man3dir)"; do \
+ test -z "$$dir" || $(mkdir_p) "$$dir"; \
+ done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ `test -z '$(STRIP)' || \
+ echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-am
+ -rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-libtool
+
+dvi: dvi-am
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+
+.PHONY: all all-am check check-am clean clean-generic clean-libtool \
+ distclean distclean-generic distclean-libtool distdir dvi \
+ dvi-am html html-am info info-am install install-am \
+ install-data install-data-am install-exec install-exec-am \
+ install-info install-info-am install-man install-man3 \
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+ maintainer-clean maintainer-clean-generic mostlyclean \
+ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
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+ uninstall-man3
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+.Dd February 15, 2008
+.Dt FFI 3
+.Sh NAME
+.Nm FFI
+.Nd Foreign Function Interface
+.Sh LIBRARY
+libffi, -lffi
+.Sh SYNOPSIS
+.In ffi.h
+.Ft ffi_status
+.Fo ffi_prep_cif
+.Fa "ffi_cif *cif"
+.Fa "ffi_abi abi"
+.Fa "unsigned int nargs"
+.Fa "ffi_type *rtype"
+.Fa "ffi_type **atypes"
+.Fc
+.Ft void
+.Fo ffi_call
+.Fa "ffi_cif *cif"
+.Fa "void (*fn)(void)"
+.Fa "void *rvalue"
+.Fa "void **avalue"
+.Fc
+.Sh DESCRIPTION
+The foreign function interface provides a mechanism by which a function can
+generate a call to another function at runtime without requiring knowledge of
+the called function's interface at compile time.
+.Sh SEE ALSO
+.Xr ffi_prep_cif 3 ,
+.Xr ffi_call 3
--- /dev/null
+.Dd February 15, 2008
+.Dt ffi_call 3
+.Sh NAME
+.Nm ffi_call
+.Nd Invoke a foreign function.
+.Sh SYNOPSIS
+.In ffi.h
+.Ft void
+.Fo ffi_call
+.Fa "ffi_cif *cif"
+.Fa "void (*fn)(void)"
+.Fa "void *rvalue"
+.Fa "void **avalue"
+.Fc
+.Sh DESCRIPTION
+The
+.Nm ffi_call
+function provides a simple mechanism for invoking a function without
+requiring knowledge of the function's interface at compile time.
+.Fa fn
+is called with the values retrieved from the pointers in the
+.Fa avalue
+array. The return value from
+.Fa fn
+is placed in storage pointed to by
+.Fa rvalue .
+.Fa cif
+contains information describing the data types, sizes and alignments of the
+arguments to and return value from
+.Fa fn ,
+and must be initialized with
+.Nm ffi_prep_cif
+before it is used with
+.Nm ffi_call .
+.Pp
+.Fa rvalue
+must point to storage that is sizeof(long) or larger. For smaller
+return value sizes, the
+.Nm ffi_arg
+or
+.Nm ffi_sarg
+integral type must be used to hold
+the return value.
+.Sh EXAMPLES
+.Bd -literal
+#include <ffi/ffi.h>
+#include <stdio.h>
+
+unsigned char
+foo(unsigned int, float);
+
+int
+main(int argc, const char **argv)
+{
+ ffi_cif cif;
+ ffi_type *arg_types[2];
+ void *arg_values[2];
+ ffi_status status;
+
+ // Because the return value from foo() is smaller than sizeof(long), it
+ // must be passed as ffi_arg or ffi_sarg.
+ ffi_arg result;
+
+ // Specify the data type of each argument. Available types are defined
+ // in <ffi/ffi.h>.
+ arg_types[0] = &ffi_type_uint;
+ arg_types[1] = &ffi_type_float;
+
+ // Prepare the ffi_cif structure.
+ if ((status = ffi_prep_cif(&cif, FFI_DEFAULT_ABI,
+ 2, &ffi_type_uint8, arg_types)) != FFI_OK)
+ {
+ // Handle the ffi_status error.
+ }
+
+ // Specify the values of each argument.
+ unsigned int arg1 = 42;
+ float arg2 = 5.1;
+
+ arg_values[0] = &arg1;
+ arg_values[1] = &arg2;
+
+ // Invoke the function.
+ ffi_call(&cif, FFI_FN(foo), &result, arg_values);
+
+ // The ffi_arg 'result' now contains the unsigned char returned from foo(),
+ // which can be accessed by a typecast.
+ printf("result is %hhu", (unsigned char)result);
+
+ return 0;
+}
+
+// The target function.
+unsigned char
+foo(unsigned int x, float y)
+{
+ unsigned char result = x - y;
+ return result;
+}
+.Ed
+.Sh SEE ALSO
+.Xr ffi 3 ,
+.Xr ffi_prep_cif 3
--- /dev/null
+.Dd February 15, 2008
+.Dt ffi_prep_cif 3
+.Sh NAME
+.Nm ffi_prep_cif
+.Nd Prepare a
+.Nm ffi_cif
+structure for use with
+.Nm ffi_call
+.
+.Sh SYNOPSIS
+.In ffi.h
+.Ft ffi_status
+.Fo ffi_prep_cif
+.Fa "ffi_cif *cif"
+.Fa "ffi_abi abi"
+.Fa "unsigned int nargs"
+.Fa "ffi_type *rtype"
+.Fa "ffi_type **atypes"
+.Fc
+.Sh DESCRIPTION
+The
+.Nm ffi_prep_cif
+function prepares a
+.Nm ffi_cif
+structure for use with
+.Nm ffi_call
+.
+.Fa abi
+specifies a set of calling conventions to use.
+.Fa atypes
+is an array of
+.Fa nargs
+pointers to
+.Nm ffi_type
+structs that describe the data type, size and alignment of each argument.
+.Fa rtype
+points to an
+.Nm ffi_type
+that describes the data type, size and alignment of the
+return value.
+.Sh RETURN VALUES
+Upon successful completion,
+.Nm ffi_prep_cif
+returns
+.Nm FFI_OK .
+It will return
+.Nm FFI_BAD_TYPEDEF
+if
+.Fa cif
+is
+.Nm NULL
+or
+.Fa atypes
+or
+.Fa rtype
+is malformed. If
+.Fa abi
+does not refer to a valid ABI,
+.Nm FFI_BAD_ABI
+will be returned. Available ABIs are
+defined in
+.Nm <ffitarget.h>
+.
+.Sh SEE ALSO
+.Xr ffi 3 ,
+.Xr ffi_call 3
X86_DARWIN_FALSE = @X86_DARWIN_FALSE@
X86_DARWIN_TRUE = @X86_DARWIN_TRUE@
X86_FALSE = @X86_FALSE@
+X86_FREEBSD_FALSE = @X86_FREEBSD_FALSE@
+X86_FREEBSD_TRUE = @X86_FREEBSD_TRUE@
X86_TRUE = @X86_TRUE@
X86_WIN32_FALSE = @X86_WIN32_FALSE@
X86_WIN32_TRUE = @X86_WIN32_TRUE@
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