* gfortran.h: Add bitmasks for different FPE traps. Add fpe

	member to options_t.
	* invoke.texi: Document the new -ffpe-trap option.
	* lang.opt: Add -ffpe-trap option.
	* options.c (gfc_init_options): Initialize the FPE option.
	(gfc_handle_fpe_trap_option): New function to parse the argument
	of the -ffpe-trap option.
	(gfc_handle_option): Add case for -ffpe-trap.
	* trans-decl.c: Declare a tree for the set_fpe library function.
	(gfc_build_builtin_function_decls): Build this tree.
	(gfc_generate_function_code): Generate a call to set_fpe at
	the beginning of the main program.
	* trans.h: New tree for the set_fpe library function.

	* Makefile.am: Add fpu.c to the build process, and
	target-dependent code as fpu-target.h.
	* Makefile.in: Regenerate.
	* configure.ac: Add call to configure.host to set
	FPU_HOST_HEADER.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* aclocal.m4: Regenerate.
	* configure.host: New script to determine which host-dependent
	code should go in.
	* libgfortran.h: Add fpe option, remove previous fpu_ options.
	Add bitmasks for different FPE traps. Add prototype for set_fpu.
	* runtime/environ.c: Remove environment variables to control
	fpu behaviour.
	* runtime/fpu.c (set_fpe): New function for the front-end.
	* runtime/main.c (init): Set FPU state.
	* config: New directory to store host-dependent code.
	* config/fpu-387.h: New file with code handling the i387 FPU.
	* config/fpu-glibc.h: New file with code for glibc systems.
	* config/fpu-generic.h: Fallback for the most generic host. Issue
	warnings.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@105328 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 10 insertions, 3 deletions

diff --git a/libgfortran/Makefile.in b/libgfortran/Makefile.in
index c4d3be6ef11..5ed436f41ae 100644
--- a/libgfortran/Makefile.in
+++ b/libgfortran/Makefile.in
@@ -66,7 +66,7 @@ am__installdirs = "$(DESTDIR)$(toolexeclibdir)"
 toolexeclibLTLIBRARIES_INSTALL = $(INSTALL)
 LTLIBRARIES = $(toolexeclib_LTLIBRARIES)
 libgfortran_la_LIBADD =
-am__objects_1 = compile_options.lo environ.lo error.lo main.lo \
+am__objects_1 = compile_options.lo environ.lo error.lo fpu.lo main.lo \
 	memory.lo pause.lo stop.lo string.lo select.lo
 am__objects_2 = all_l4.lo all_l8.lo all_l16.lo
 am__objects_3 = any_l4.lo any_l8.lo any_l16.lo
@@ -276,6 +276,7 @@ EGREP = @EGREP@
 EXEEXT = @EXEEXT@
 FC = @FC@
 FCFLAGS = @FCFLAGS@
+FPU_HOST_HEADER = @FPU_HOST_HEADER@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_SCRIPT = @INSTALL_SCRIPT@
@@ -357,7 +358,6 @@ libgfortran_la_LDFLAGS = -version-info `grep -v '^\#' $(srcdir)/libtool-version`
 libgfortranbegin_la_SOURCES = fmain.c
 libgfortranbegin_la_LDFLAGS = -static
 AM_CPPFLAGS = -iquote$(srcdir)/io
-libgfortranincludedir = $(includedir)/gforio
 gfor_io_src = \
 io/close.c \
 io/file_pos.c \
@@ -435,6 +435,7 @@ gfor_src = \
 runtime/compile_options.c \
 runtime/environ.c \
 runtime/error.c \
+runtime/fpu.c \
 runtime/main.c \
 runtime/memory.c \
 runtime/pause.c \
@@ -771,7 +772,7 @@ gfor_built_src = $(i_all_c) $(i_any_c) $(i_count_c) $(i_maxloc0_c) \
     $(i_exponent_c) $(i_fraction_c) $(i_nearest_c) $(i_set_exponent_c) \
     $(i_pow_c) \
     selected_int_kind.inc selected_real_kind.inc kinds.h \
-    kinds.inc c99_protos.inc
+    kinds.inc c99_protos.inc fpu-target.h
 
 
 # Machine generated specifics
@@ -1394,6 +1395,9 @@ environ.lo: runtime/environ.c
 error.lo: runtime/error.c
 	$(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o error.lo `test -f 'runtime/error.c' || echo '$(srcdir)/'`runtime/error.c
 
+fpu.lo: runtime/fpu.c
+	$(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o fpu.lo `test -f 'runtime/fpu.c' || echo '$(srcdir)/'`runtime/fpu.c
+
 main.lo: runtime/main.c
 	$(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o main.lo `test -f 'runtime/main.c' || echo '$(srcdir)/'`runtime/main.c
 
@@ -2699,6 +2703,9 @@ selected_int_kind.inc: $(srcdir)/mk-sik-inc.sh
 selected_real_kind.inc: $(srcdir)/mk-srk-inc.sh
 	$(SHELL) $(srcdir)/mk-srk-inc.sh '$(FCCOMPILE)' > $@
 
+fpu-target.h: $(srcdir)/$(FPU_HOST_HEADER)
+	cp $(srcdir)/$(FPU_HOST_HEADER) $@
+
 @MAINTAINER_MODE_TRUE@$(i_all_c): m4/all.m4 $(I_M4_DEPS1)
 @MAINTAINER_MODE_TRUE@	m4 -Dfile=$@ -I$(srcdir)/m4 all.m4 > $(srcdir)/$@