real.c (struct real_format): Move to real.h.

	* real.c (struct real_format): Move to real.h.
	(real_format_for_mode): Rename from fmt_for_mode; update all users;
	initialize with ieee defaults.
	(real_to_target_fmt, real_from_target_fmt): New.
	(ieee_single_format, ieee_double_format, ieee_extended_motorola_format,
	ieee_extended_intel_96_format, ieee_extended_intel_128_format,
	ieee_quad_format, i370_single_format, i370_double_format,
	c4x_single_format, c4x_extended_format): Rename from s/_format//.
	(ieee_quad_format): Fix emin.
	(format_for_size, init_real_once): Remove.
	* real.h (struct real_format): Move from real.c.
	(real_format_for_mode): Declare.
	(real_to_target_fmt, real_from_target_fmt): Declare.
	(ieee_single_format, ieee_double_format, ieee_extended_motorola_format,
	ieee_extended_intel_96_format, ieee_extended_intel_128_format,
	ieee_quad_format, vax_f_format, vax_d_format, vax_g_format,
	i370_single_format, i370_double_format, c4x_single_format,
	c4x_extended_format): Declare.
	* toplev.c (do_compile): Don't call init_real_once.

	* defaults.h (INTEL_EXTENDED_IEEE_FORMAT): Remove.
	* doc/tm.texi (INTEL_EXTENDED_IEEE_FORMAT): Remove.

	* config/alpha/alpha.h (TARGET_FLOAT_FORMAT): Define.
	* config/alpha/osf5.h (LONG_DOUBLE_TYPE_SIZE): 64, if vax mode.
	* config/alpha/alpha.c (override_options): Set real_format_for_mode
	for VAX, if enabled.

	* config/c4x/c4x.c (c4x_override_options): Set real_format_for_mode
	for C4X.

	* config/i370/i370.h (OVERRIDE_OPTIONS): New.
	* config/i370/i370.c (override_options): New.
	* config/i370/i370-protos.h: Update.

	* config/i386/i386.c (override_options): Set real_format_for_mode
	for Intel 80-bit extended.
	* config/i386/i386.h (INTEL_EXTENDED_IEEE_FORMAT): Remove.

	* config/i960/i960.h (LONG_DOUBLE_TYPE_SIZE): Mind -mlong-double-64.
	(OVERRIDE_OPTIONS): Move code...
	* config/i960/i960.c (i960_initialize): ... here.  Set
	real_format_for_mode for Intel 80-bit extended.

	* config/ia64/ia64.c (ia64_override_options): Set real_format_for_mode
	for Intel 80-bit extended, if enabled.

	* config/m68k/m68k.c (override_options): Set real_format_for_mode
        for Motorola 96-bit extended.

	* config/vax/vax.h (OVERRIDE_OPTIONS): New.
	* config/vax/vax.c (override_options): New.
	* config/vax/vax-protos.h: Update.

From-SVN: r57388

3 files changed, 16 insertions, 0 deletions

diff --git a/gcc/config/i370/i370-protos.h b/gcc/config/i370/i370-protos.h
index 8ca7ca6..a3f4acd 100644
--- a/gcc/config/i370/i370-protos.h
+++ b/gcc/config/i370/i370-protos.h
@@ -24,6 +24,8 @@ Boston, MA 02111-1307, USA.  */
 #ifndef GCC_I370_PROTOS_H
 #define GCC_I370_PROTOS_H
 
+extern void override_options PARAMS ((void));
+
 #ifdef RTX_CODE
 extern int i370_branch_dest PARAMS ((rtx));
 extern int i370_branch_length PARAMS ((rtx));
diff --git a/gcc/config/i370/i370.c b/gcc/config/i370/i370.c
index 92d2795..b4474db 100644
--- a/gcc/config/i370/i370.c
+++ b/gcc/config/i370/i370.c
@@ -315,6 +315,18 @@ static const unsigned char ebcasc[256] =
 
 struct gcc_target targetm = TARGET_INITIALIZER;
 
+/* Set global variables as needed for the options enabled.  */
+
+void
+override_options ()
+{
+  /* We're 370 floating point, not IEEE floating point.  */
+  memset (real_format_for_mode, 0, sizeof real_format_for_mode);
+  real_format_for_mode[SFmode - QFmode] = &i370_single_format;
+  real_format_for_mode[DFmode - QFmode] = &i370_double_format;
+}
+
+
 /* Map characters from one character set to another.
    C is the character to be translated.  */
 
diff --git a/gcc/config/i370/i370.h b/gcc/config/i370/i370.h
index d4c2939..a2aff67 100644
--- a/gcc/config/i370/i370.h
+++ b/gcc/config/i370/i370.h
@@ -76,6 +76,8 @@ extern int mvs_function_name_length;
   { "no-char-instructions", -1, N_("Do not generate char instructions")}, \
   { "", TARGET_DEFAULT, 0} }
 
+#define OVERRIDE_OPTIONS  override_options ()
+
 /* To use IBM supplied macro function prologue and epilogue, define the
    following to 1.  Should only be needed if IBM changes the definition
    of their prologue and epilogue.  */