[PATCH] AIX/i386 config tweaks

[Mark Kettenis]

FYI, I have checked in the following.

This is untested, but AIX/i386 was broken anyway, and in theory this
should fix it.  The problem is that
i386-tdep.c:i386_extract_return_value() accessed the FP0_REGNUM in
GDB's register array, but since the reorganization of tm-i386.h last
fall, the register array wasn't large enough anymore.

It also clears the way for some changes I'm planning to make to
i386-tdep.c:i386_extract_return_value().

Mark


2000-03-02  Mark Kettenis  <kettenis@gnu.org>

	* config/i386/tm-i386aix.h (NUM_FPREGS, NUM_REGS, REGISTER_BYTES):
	Override definitions to include the normal FPU registers.
	(REGISTER_CONVERTIBLE, REGISTER_CONVERT_TO_VIRTUAL,
	REGISTER_CONVERT_TO_RAW): Removed.  The default definitions are
	fine for AIX/i386.
	(i387_to_double, double_to_i387): Remove prototypes.


Index: config/i386/tm-i386aix.h
===================================================================
RCS file: /cvs/src/src/gdb/config/i386/tm-i386aix.h,v
retrieving revision 1.1.1.2
diff -u -p -r1.1.1.2 tm-i386aix.h
--- config/i386/tm-i386aix.h	1999/07/07 20:13:03	1.1.1.2
+++ config/i386/tm-i386aix.h	2000/03/02 15:37:29
@@ -29,40 +29,27 @@
 #ifndef I386
 #define I386 1
 #endif
+
+/* FIXME: kettenis/2000-03-02: This is used in
+   i386-tdep.c:i386_extract_return_value(), and will be remove once
+   I've fixed that.  Meanwhile don't use it for any other purpose
+   please!  */
 #ifndef I386_AIX_TARGET
 #define I386_AIX_TARGET 1
 #endif
-
-/* Nonzero if register N requires conversion
-   from raw format to virtual format.  */
-
-#undef  REGISTER_CONVERTIBLE
-#define REGISTER_CONVERTIBLE(N) \
-  ((N < FP0_REGNUM) ? 0 : 1)
-
-/* Convert data from raw format for register REGNUM in buffer FROM
-   to virtual format with type TYPE in buffer TO.  */
 
-#undef REGISTER_CONVERT_TO_VIRTUAL
-#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
-{ \
-  double val; \
-  i387_to_double ((FROM), (char *)&val); \
-  store_floating ((TO), TYPE_LENGTH (TYPE), val); \
-}
-extern void
-i387_to_double PARAMS ((char *, char *));
+/* AIX/i386 has FPU support.  However, the native configuration (which
+   is the only supported configuration) doesn't make the FPU control
+   registers available.  Override the appropriate symbols such that
+   only the normal FPU registers are included in GDB's register array.  */
+   
+#undef NUM_FPREGS
+#define NUM_FPREGS (8)
 
-/* Convert data from virtual format with type TYPE in buffer FROM
-   to raw format for register REGNUM in buffer TO.  */
+#undef NUM_REGS
+#define NUM_REGS (NUM_GREGS + NUM_FPREGS)
 
-#undef REGISTER_CONVERT_TO_RAW
-#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
-{ \
-  double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
-  double_to_i387((char *)&val, (TO)); \
-}
-extern void
-double_to_i387 PARAMS ((char *, char *));
+#undef REGISTER_BYTES
+#define REGISTER_BYTES (SIZEOF_GREGS + SIZEOF_FPU_REGS)
 
 #endif /* TM_I386AIX_H */