* config/mips/tm-mips.h (enum mips_fpu_type): New enum.

	(mips_fpu): Change type to enum mips_fpu_type.
	(FIX_CALL_DUMMY): Handle mips_fpu == MIPS_FPU_SINGLE.
	* mips-tdep.c (mips_fpu): Change type to enum mips_fpu_type.
	Don't initialize.
	(mips_fpu_string): New static variable.
	(mips_push_dummy_frame): Handle mips_fpu == MIPS_FPU_SINGLE.
	(mips_pop_frame): Likewise.
	(mips_extract_return_value): Likewise.
	(mips_store_return_value): Likewise.
	(mips_set_fpu_command): New static function.
	(mips_show_fpu_command): New static function.
	(_initialize_mips_tdep): Change handling of set/show mipsfpu.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index d7924cc7064368cc5de2cec97bf3c75c8700745e..2b81adc101d0bcf1afe9eb01aa2bfc5fbfe0f4d9 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,19 @@
+Tue Jan 17 14:00:58 1995  Ian Lance Taylor  <ian@sanguine.cygnus.com>
+
+       * config/mips/tm-mips.h (enum mips_fpu_type): New enum.
+       (mips_fpu): Change type to enum mips_fpu_type.
+       (FIX_CALL_DUMMY): Handle mips_fpu == MIPS_FPU_SINGLE.
+       * mips-tdep.c (mips_fpu): Change type to enum mips_fpu_type.
+       Don't initialize.
+       (mips_fpu_string): New static variable.
+       (mips_push_dummy_frame): Handle mips_fpu == MIPS_FPU_SINGLE.
+       (mips_pop_frame): Likewise.
+       (mips_extract_return_value): Likewise.
+       (mips_store_return_value): Likewise.
+       (mips_set_fpu_command): New static function.
+       (mips_show_fpu_command): New static function.
+       (_initialize_mips_tdep): Change handling of set/show mipsfpu.
+
 Tue Jan 17 09:48:38 1995  Jim Kingdon  <kingdon@lioth.cygnus.com>
 
        * a29k-tdep.c (gdb_print_insn_a29k): Fix typo (&info -> info).

diff --git a/gdb/config/mips/tm-mips.h b/gdb/config/mips/tm-mips.h
index cb20c683454cb67f09f9fd8354d376539d16ea56..8c93366a20bfcfca9f5e8cababc40c3267a31675 100644 (file)
--- a/gdb/config/mips/tm-mips.h
+++ b/gdb/config/mips/tm-mips.h
@@ -35,9 +35,18 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define IEEE_FLOAT
 
 /* Some MIPS boards are provided both with and without a floating
-   point coprocessor; we provide a user settable variable to tell gdb
-   whether there is one or not.  */
-extern int mips_fpu;
+   point coprocessor.  The MIPS R4650 chip has only single precision
+   floating point.  We provide a user settable variable to tell gdb
+   what type of floating point to use.  */
+
+enum mips_fpu_type
+{
+  MIPS_FPU_DOUBLE,     /* Full double precision floating point.  */
+  MIPS_FPU_SINGLE,     /* Single precision floating point (R4650).  */
+  MIPS_FPU_NONE                /* No floating point.  */
+};
+
+extern enum mips_fpu_type mips_fpu;
 
 /* The name of the usual type of MIPS processor that is in the target
    system.  */
@@ -370,7 +379,7 @@ extern int in_sigtramp PARAMS ((CORE_ADDR, char *));
        (dummyname + 12 * 4, 4,                                         \
         (extract_unsigned_integer (dummyname + 12 * 4, 4)              \
          | ((fun) & 0xffff)));                                         \
-      if (! mips_fpu)                                                  \
+      if (mips_fpu == MIPS_FPU_NONE)                                   \
        {                                                               \
          store_unsigned_integer (dummyname + 3 * 4, 4,                 \
                                  (unsigned LONGEST) 0);                \
@@ -381,6 +390,18 @@ extern int in_sigtramp PARAMS ((CORE_ADDR, char *));
          store_unsigned_integer (dummyname + 6 * 4, 4,                 \
                                  (unsigned LONGEST) 0);                \
        }                                                               \
+      else if (mips_fpu == MIPS_FPU_SINGLE)                            \
+       {                                                               \
+         /* This isn't right.  mips_push_arguments will call           \
+             value_arg_coerce, which will convert all float arguments  \
+             to doubles.  If the function prototype is float, though,  \
+             it will be expecting a float argument in a float          \
+             register.  */                                             \
+         store_unsigned_integer (dummyname + 4 * 4, 4,                 \
+                                 (unsigned LONGEST) 0);                \
+         store_unsigned_integer (dummyname + 6 * 4, 4,                 \
+                                 (unsigned LONGEST) 0);                \
+       }                                                               \
       else if (TARGET_BYTE_ORDER == BIG_ENDIAN                         \
               && ! GDB_TARGET_IS_MIPS64)                               \
        {                                                               \