200x-xx-xx Nathan Sidwell <nathan@codesourcery.com> Richard Sandiford <richard@codesourcery.com>

gcc/
200x-xx-xx  Nathan Sidwell  <nathan@codesourcery.com>
	    Richard Sandiford  <richard@codesourcery.com>

	* doc/invoke.texi: Document the macros that are defined by
	m68k's -mtune and -mhard-float options.
	* config/m68k/m68k-protos.h (m68k_cpp_cpu_ident) Declare.
	(m68k_cpp_cpu_family): Likewise.
	* config/m68k/m68k.h (TARGET_CPU_CPP_BUILTINS): Add a full set
	of __ucfv*__ macros.  Define __mcffpu__ if generating code for
	ColdFire FPUs.  Define __mcf_cpu_* and __mcf_family_* macros.
	* config/m68k/m68k.c (m68k_cpp_cpu_ident): New function.
	(m68k_cpp_cpu_family): Likewise.

Co-Authored-By: Richard Sandiford <richard@codesourcery.com>

From-SVN: r120716

5 files changed, 89 insertions, 3 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 910bfb9..837f085 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,16 @@
+2007-01-12  Nathan Sidwell  <nathan@codesourcery.com>
+	    Richard Sandiford  <richard@codesourcery.com>
+
+	* doc/invoke.texi: Document the macros that are defined by
+	m68k's -mtune and -mhard-float options.
+	* config/m68k/m68k-protos.h (m68k_cpp_cpu_ident) Declare.
+	(m68k_cpp_cpu_family): Likewise.
+	* config/m68k/m68k.h (TARGET_CPU_CPP_BUILTINS): Add a full set
+	of __ucfv*__ macros.  Define __mcffpu__ if generating code for
+	ColdFire FPUs.  Define __mcf_cpu_* and __mcf_family_* macros.
+	* config/m68k/m68k.c (m68k_cpp_cpu_ident): New function.
+	(m68k_cpp_cpu_family): Likewise.
+
 2007-01-12  Richard Sandiford  <richard@codesourcery.com>
 
 	* config/m68k/m68k.h (TARGET_CPU_CPP_BUILTINS): Treat all mc68*
diff --git a/gcc/config/m68k/m68k-protos.h b/gcc/config/m68k/m68k-protos.h
index 531c695..75f6f25 100644
--- a/gcc/config/m68k/m68k-protos.h
+++ b/gcc/config/m68k/m68k-protos.h
@@ -61,5 +61,7 @@ extern bool m68k_regno_mode_ok (int, enum machine_mode);
 extern int flags_in_68881 (void);
 extern bool use_return_insn (void);
 extern void override_options (void);
+extern const char *m68k_cpp_cpu_ident (const char *);
+extern const char *m68k_cpp_cpu_family (const char *);
 extern void init_68881_table (void);
 extern int m68k_hard_regno_rename_ok(unsigned int, unsigned int);
diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
index 2941757..edf8a7e 100644
--- a/gcc/config/m68k/m68k.c
+++ b/gcc/config/m68k/m68k.c
@@ -540,6 +540,30 @@ override_options (void)
 
   SUBTARGET_OVERRIDE_OPTIONS;
 }
+
+/* Generate a macro of the form __mPREFIX_cpu_NAME, where PREFIX is the
+   given argument and NAME is the argument passed to -mcpu.  Return NULL
+   if -mcpu was not passed.  */
+
+const char *
+m68k_cpp_cpu_ident (const char *prefix)
+{
+  if (!m68k_cpu_entry)
+    return NULL;
+  return concat ("__m", prefix, "_cpu_", m68k_cpu_entry->name, NULL);
+}
+
+/* Generate a macro of the form __mPREFIX_family_NAME, where PREFIX is the
+   given argument and NAME is the name of the representative device for
+   the -mcpu argument's family.  Return NULL if -mcpu was not passed.  */
+
+const char *
+m68k_cpp_cpu_family (const char *prefix)
+{
+  if (!m68k_cpu_entry)
+    return NULL;
+  return concat ("__m", prefix, "_family_", m68k_cpu_entry->family, NULL);
+}
 
 /* Return nonzero if FUNC is an interrupt function as specified by the
    "interrupt_handler" attribute.  */
diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h
index 030dc4d..17105b5 100644
--- a/gcc/config/m68k/m68k.h
+++ b/gcc/config/m68k/m68k.h
@@ -107,6 +107,26 @@ Boston, MA 02110-1301, USA.  */
 	  builtin_define_std ("mc68020");				\
 	  break;							\
 									\
+	case ucfv2:							\
+	  builtin_define ("__mcfv2__");					\
+	  break;							\
+									\
+    	case ucfv3:							\
+	  builtin_define ("__mcfv3__");					\
+	  break;							\
+									\
+	case ucfv4:							\
+	  builtin_define ("__mcfv4__");					\
+	  break;							\
+									\
+	case ucfv4e:							\
+	  builtin_define ("__mcfv4e__");				\
+	  break;							\
+									\
+	case ucfv5:							\
+	  builtin_define ("__mcfv5__");					\
+	  break;							\
+									\
 	default:							\
 	  break;							\
 	}								\
@@ -116,7 +136,16 @@ Boston, MA 02110-1301, USA.  */
 									\
       if (TARGET_COLDFIRE)						\
 	{								\
+	  const char *tmp;						\
+	  								\
+	  tmp = m68k_cpp_cpu_ident ("cf");			   	\
+	  if (tmp)							\
+	    builtin_define (tmp);					\
+	  tmp = m68k_cpp_cpu_family ("cf");				\
+	  if (tmp)							\
+	    builtin_define (tmp);					\
 	  builtin_define ("__mcoldfire__");				\
+									\
 	  if (TARGET_ISAC)						\
 	    builtin_define ("__mcfisac__");				\
 	  else if (TARGET_ISAB)						\
@@ -152,10 +181,11 @@ Boston, MA 02110-1301, USA.  */
 		  break;						\
 		}							\
     	    }								\
-	  if (m68k_tune == ucfv4e)					\
-	    builtin_define ("__mcfv4e__");				\
 	}								\
 									\
+      if (TARGET_COLDFIRE_FPU)						\
+	builtin_define ("__mcffpu__");					\
+									\
       if (TARGET_CF_HWDIV)						\
 	builtin_define ("__mcfhwdiv__");				\
 									\
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 145c322..a3b9c90 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -10328,6 +10328,10 @@ below, which also classifies the CPUs into families:
 @var{arch} is compatible with @var{cpu}.  Other combinations of
 @option{-mcpu} and @option{-march} are rejected.
 
+gcc defines the macro @samp{__mcf_cpu_@var{cpu}} when ColdFire target
+@var{cpu} is selected.  It also defines @samp{__mcf_family_@var{family}},
+where the value of @var{family} is given by the table above.
+
 @item -mtune=@var{tune}
 @opindex mtune
 Tune the code for a particular microarchitecture, within the
@@ -10343,6 +10347,17 @@ to run relatively well on 68020, 68030 and 68040 targets.
 as well.  These two options select the same tuning decisions as
 @option{-m68020-40} and @option{-m68020-60} respectively.
 
+gcc defines the macros @samp{__mc@var{arch}} and @samp{__mc@var{arch}__}
+when tuning for 680x0 architecture @var{arch}.  It also defines
+@samp{mc@var{arch}} unless either @option{-ansi} or a non-GNU @option{-std}
+option is used.  If gcc is tuning for a range of architectures,
+as selected by @option{-mtune=68020-40} or @option{-mtune=68020-60},
+it defines the macros for every architecture in the range.
+
+gcc also defines the macro @samp{__m@var{uarch}__} when tuning for
+ColdFire microarchitecture @var{uarch}, where @var{uarch} is one
+of the arguments given above.
+
 @item -m68000
 @itemx -mc68000
 @opindex m68000
@@ -10465,7 +10480,9 @@ The option is equivalent to @option{-march=68020} @option{-mtune=68020-60}.
 @opindex mhard-float
 @opindex m68881
 Generate floating-point instructions.  This is the default for 68020
-and above, and for ColdFire devices that have an FPU.
+and above, and for ColdFire devices that have an FPU.  It defines the
+macro @samp{__HAVE_68881__} on M680x0 targets and @samp{__mcffpu__}
+on ColdFire targets.
 
 @item -msoft-float
 @opindex msoft-float