install.texi: Note that ARM toolchains need binutils 2.13 or newer.

* doc/install.texi: Note that ARM toolchains need binutils 2.13 or newer.
* config/arm/elf.h (SUBTARGET_ASM_FLOAT_SPEC): Pass -mfpu=softfpa instead of -mno-fpu.
* config/arm/semi.h (ASM_SPEC): Likewise.
* config/arm/xscale-elf.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise,
  but only if -msoft-float is specified pass.  Otherwise pass -mfpu=softvfp.

From-SVN: r65398

gcc/ChangeLog

@@ -1,3 +1,14 @@
+2003-04-09  Nick Clifton  <nickc@redhat.com>
+
+	* doc/install.texi: Note that ARM toolchains need binutils 2.13 or
+	newer.
+	* config/arm/elf.h (SUBTARGET_ASM_FLOAT_SPEC): Pass -mfpu=softfpa
+	instead of -mno-fpu.
+	* config/arm/semi.h (ASM_SPEC): Likewise.
+	* config/arm/xscale-elf.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise,
+	but only if -msoft-float is specified pass.  Otherwise pass
+	-mfpu=softvfp.
+	
 2003-04-09  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
 
 	* function.c (purge_addressof): Use free_INSN_LIST_node instead of

gcc/config/arm/elf.h

@@ -46,7 +46,7 @@
 
 #ifndef SUBTARGET_ASM_FLOAT_SPEC
 #define SUBTARGET_ASM_FLOAT_SPEC "\
-%{mapcs-float:-mfloat} %{msoft-float:-mno-fpu}"
+%{mapcs-float:-mfloat} %{msoft-float:-mfpu=softfpa}"
 #endif
 
 #ifndef ASM_SPEC

gcc/config/arm/semi.h

@@ -64,7 +64,7 @@
 %{mcpu=*:-mcpu=%*} \
 %{march=*:-march=%*} \
 %{mapcs-float:-mfloat} \
-%{msoft-float:-mno-fpu} \
+%{msoft-float:-mfpu=softfpa} \
 %{mthumb-interwork:-mthumb-interwork} \
 %(subtarget_extra_asm_spec)"
 #endif

gcc/config/arm/xscale-elf.h

@@ -28,7 +28,30 @@
 #define SUBTARGET_CPU_DEFAULT 		TARGET_CPU_xscale
 #endif
 
-#define SUBTARGET_EXTRA_ASM_SPEC "%{!mcpu=*:-mcpu=xscale} %{!mhard-float:-mno-fpu}"
+/* Note - there are three possible -mfpu= arguments that can be passed to
+   the assembler:
+   
+     -mfpu=softvfp   This is the default.  It indicates thats doubles are
+                     stored in a format compatable with the VFP
+		     specification.  This is the newer double format, whereby
+		     the endian-ness of the doubles matches the endian-ness
+		     of the memory architecture.
+     
+     -mfpu=fpa       This is when -mhard-float is specified.
+                     [It is not known if any XScale's have been made with
+		     hardware floating point support, but nevertheless this
+		     is what happens].
+		     
+     -mfpu=softfpa   This is when -msoft-float is specified.
+                     This is the normal beahviour of other arm configurations,
+		     which for backwards compatability purposes default to
+		     supporting the old FPA format which was always big
+		     endian, regardless of the endian-ness of the memory
+		     system.  */
+		     
+#define SUBTARGET_EXTRA_ASM_SPEC "%{!mcpu=*:-mcpu=xscale} \
+  %{mhard-float:-mfpu=fpa} \
+  %{!mhard-float: %{msoft-float:-mfpu=softfpa;:-mfpu=softvfp}}"
 
 #ifndef MULTILIB_DEFAULTS
 #define MULTILIB_DEFAULTS \

gcc/doc/install.texi

@@ -1918,13 +1918,19 @@ configuration.
 @end html
 @heading @anchor{arm-*-elf}arm-*-elf
 This configuration is intended for embedded systems.
+We require GNU binutils 2.13 or newer.
 
 @html
 <hr />
 @end html
 @heading @anchor{arm*-*-linux-gnu}arm*-*-linux-gnu
+We require GNU binutils 2.13 or newer.
 
-We require GNU binutils 2.10 or newer.
+@html
+<hr />
+@end html
+@heading @anchor{xscale-*-elf}xscale-*-elf
+We require GNU binutils 2.13 or newer.
 
 @html
 <hr />