2002-11-06  Andrew Cagney  <cagney@redhat.com>

	* i386-tdep.c (i386_mmx_regnum_p): Rename mmx_regnum_p.  Update
	all callers.
	(i386_fp_regnum_p): New function.  Use instead of FP_REGNUM_P.
	(i386_fpc_regnum_p): New function.  Use instead of FPC_REGNUM_P.
	(i386_sse_regnum_p): New function.  Use instead of SSE_REGNUM_P.
	(i386_mxcsr_regnum_p): new function.  Use instead of
	MXCSR_REGNUM_P.
	(i386_linux_orig_eax_regnum_p): New function.
	* i386-linux-tdep.c (i386_linux_register_name): Use
	i386_linux_orig_eax_regnum_p.
	* i386-tdep.h (SSE_REGNUM_P): Delete macro.
	(i386_sse_regnum_p): Declare.
	(i386_mxcsr_regnum_p): Declare.
	(FP_REGNUM_P, FPC_REGNUM_P): Delete macros.
	(i386_fp_regnum_p, i386_fpc_regnum_p): Declare.
	(I386_LINUX_ORIG_EAX_REGNUM): Define macro.
	(i386_linux_orig_eax_regnum_p): Declare.
	(IS_FP_REGNUM): Update definition.
	(IS_FPU_CTRL_REGNUM): Update definition..
	(IS_SSE_REGNUM): Update definition..
	* i386-linux-tdep.h (I386_LINUX_ORIG_EAX_REGNUM): Delete macro.
	Moved to "i386-tdep.h".
	* i386v-nat.c (register_u_addr): Update.
	* go32-nat.c (fetch_register): Update.
	(store_register): Update.

Index: go32-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/go32-nat.c,v
retrieving revision 1.33
diff -u -r1.33 go32-nat.c
--- go32-nat.c	11 May 2002 17:22:26 -0000	1.33
+++ go32-nat.c	6 Nov 2002 19:29:37 -0000
@@ -467,7 +467,7 @@
 {
   if (regno < FP0_REGNUM)
     supply_register (regno, (char *) &a_tss + regno_mapping[regno].tss_ofs);
-  else if (FP_REGNUM_P (regno) || FPC_REGNUM_P (regno))
+  else if (i386_fp_regnum_p (regno) || i386_fpc_regnum_p (regno))
     i387_supply_register (regno, (char *) &npx);
   else
     internal_error (__FILE__, __LINE__,
@@ -492,7 +492,7 @@
 {
   if (regno < FP0_REGNUM)
     regcache_collect (regno, (char *) &a_tss + regno_mapping[regno].tss_ofs);
-  else if (FP_REGNUM_P (regno) || FPC_REGNUM_P (regno))
+  else if (i386_fp_regnum_p (regno) || i386_fpc_regnum_p (regno))
     i387_fill_fsave ((char *) &npx, regno);
   else
     internal_error (__FILE__, __LINE__,
Index: i386-linux-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/i386-linux-tdep.c,v
retrieving revision 1.18
diff -u -r1.18 i386-linux-tdep.c
--- i386-linux-tdep.c	31 Oct 2002 20:51:15 -0000	1.18
+++ i386-linux-tdep.c	6 Nov 2002 19:29:37 -0000
@@ -41,8 +41,7 @@
 static const char *
 i386_linux_register_name (int reg)
 {
-  /* Deal with the extra "orig_eax" pseudo register.  */
-  if (reg == I386_LINUX_ORIG_EAX_REGNUM)
+  if (i386_linux_orig_eax_regnum_p (reg))
     return "orig_eax";
 
   return i386_register_name (reg);
Index: i386-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/i386-tdep.c,v
retrieving revision 1.91
diff -u -r1.91 i386-tdep.c
--- i386-tdep.c	2 Nov 2002 14:59:10 -0000	1.91
+++ i386-tdep.c	6 Nov 2002 19:29:38 -0000
@@ -70,11 +70,52 @@
 #define MM0_REGNUM (NUM_REGS)
 
 static int
-mmx_regnum_p (int reg)
+i386_mmx_regnum_p (int reg)
 {
   return (reg >= MM0_REGNUM && reg < MM0_REGNUM + mmx_num_regs);
 }
 
+/* FP register?  */
+
+int
+i386_fp_regnum_p (int regnum)
+{
+  return (regnum < NUM_REGS
+	  && (FP0_REGNUM && FP0_REGNUM <= (regnum) && (regnum) < FPC_REGNUM));
+}
+
+int
+i386_fpc_regnum_p (int regnum)
+{
+  return (regnum < NUM_REGS
+	  && (FPC_REGNUM <= (regnum) && (regnum) < XMM0_REGNUM));
+}
+
+/* SSE register?  */
+
+int
+i386_sse_regnum_p (int regnum)
+{
+  return (regnum < NUM_REGS
+	  && (XMM0_REGNUM <= (regnum) && (regnum) < MXCSR_REGNUM));
+}
+
+int
+i386_mxcsr_regnum_p (int regnum)
+{
+  return (regnum < NUM_REGS
+	  && (regnum == MXCSR_REGNUM));
+}
+
+/* The GNU/Linux orig eax?  */
+
+int
+i386_linux_orig_eax_regnum_p (int regnum)
+{
+  return (regnum < NUM_REGS
+	  && (regnum == I386_LINUX_ORIG_EAX_REGNUM));
+}
+
 /* Return the name of register REG.  */
 
 const char *
@@ -82,7 +123,7 @@
 {
   if (reg < 0)
     return NULL;
-  if (mmx_regnum_p (reg))
+  if (i386_mmx_regnum_p (reg))
     return i386_mmx_names[reg - MM0_REGNUM];
   if (reg >= sizeof (i386_register_names) / sizeof (*i386_register_names))
     return NULL;
@@ -1098,13 +1139,13 @@
   if (regnum == PC_REGNUM || regnum == FP_REGNUM || regnum == SP_REGNUM)
     return lookup_pointer_type (builtin_type_void);
 
-  if (FP_REGNUM_P (regnum))
+  if (i386_fp_regnum_p (regnum))
     return builtin_type_i387_ext;
 
-  if (SSE_REGNUM_P (regnum))
+  if (i386_sse_regnum_p (regnum))
     return builtin_type_vec128i;
 
-  if (mmx_regnum_p (regnum))
+  if (i386_mmx_regnum_p (regnum))
     return builtin_type_vec64i;
 
   return builtin_type_int;
@@ -1131,7 +1172,7 @@
 i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
 			   int regnum, void *buf)
 {
-  if (mmx_regnum_p (regnum))
+  if (i386_mmx_regnum_p (regnum))
     {
       char *mmx_buf = alloca (MAX_REGISTER_RAW_SIZE);
       int fpnum = mmx_regnum_to_fp_regnum (regcache, regnum);
@@ -1147,7 +1188,7 @@
 i386_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
 			    int regnum, const void *buf)
 {
-  if (mmx_regnum_p (regnum))
+  if (i386_mmx_regnum_p (regnum))
     {
       char *mmx_buf = alloca (MAX_REGISTER_RAW_SIZE);
       int fpnum = mmx_regnum_to_fp_regnum (regcache, regnum);
@@ -1171,7 +1212,7 @@
 static int
 i386_register_convertible (int regnum)
 {
-  return FP_REGNUM_P (regnum);
+  return i386_fp_regnum_p (regnum);
 }
 
 /* Convert data from raw format for register REGNUM in buffer FROM to
@@ -1181,7 +1222,7 @@
 i386_register_convert_to_virtual (int regnum, struct type *type,
 				  char *from, char *to)
 {
-  gdb_assert (FP_REGNUM_P (regnum));
+  gdb_assert (i386_fp_regnum_p (regnum));
 
   /* We only support floating-point values.  */
   if (TYPE_CODE (type) != TYPE_CODE_FLT)
@@ -1204,7 +1245,7 @@
 i386_register_convert_to_raw (struct type *type, int regnum,
 			      char *from, char *to)
 {
-  gdb_assert (FP_REGNUM_P (regnum));
+  gdb_assert (i386_fp_regnum_p (regnum));
 
   /* We only support floating-point values.  */
   if (TYPE_CODE (type) != TYPE_CODE_FLT)
Index: i386-tdep.h
===================================================================
RCS file: /cvs/src/src/gdb/i386-tdep.h,v
retrieving revision 1.14
diff -u -r1.14 i386-tdep.h
--- i386-tdep.h	1 Sep 2002 23:24:19 -0000	1.14
+++ i386-tdep.h	6 Nov 2002 19:29:38 -0000
@@ -113,11 +113,10 @@
 /* FPU opcode, bottom eleven bits.  */
 #define FOP_REGNUM	(FPC_REGNUM + 7)
 
-/* Return non-zero if N corresponds to a FPU data registers.  */
-#define FP_REGNUM_P(n)	(FP0_REGNUM && FP0_REGNUM <= (n) && (n) < FPC_REGNUM)
-
-/* Return non-zero if N corresponds to a FPU control register.  */
-#define FPC_REGNUM_P(n)	(FPC_REGNUM <= (n) && (n) < XMM0_REGNUM)
+/* Return non-zero if REGNUM matches the FP register and the FP
+   register set is active.  */
+extern int i386_fp_regnum_p (int regnum);
+extern int i386_fpc_regnum_p (int regnum);
 
 /* SSE registers.  */
 
@@ -128,17 +127,34 @@
 #define MXCSR_REGNUM \
   (XMM0_REGNUM + gdbarch_tdep (current_gdbarch)->num_xmm_regs)
 
-/* Return non-zero if N corresponds to a SSE data register.  */
-#define SSE_REGNUM_P(n) (XMM0_REGNUM <= (n) && (n) < MXCSR_REGNUM)
+/* Return non-zero if REGNUM matches the SSE register and the SSE
+   register set is active.  */
+extern int i386_sse_regnum_p (int regnum);
+extern int i386_mxcsr_regnum_p (int regnum);
+
+/* The Linux kernel pretends there is an additional "orig_eax"
+   register.  Since GDB needs access to that register to be able to
+   properly restart system calls when necessary (see
+   i386-linux-tdep.c) we need our own versions of a number of
+   functions that deal with GDB's register cache.  */
+
+/* Register number for the "orig_eax" pseudo-register.  If this
+   pseudo-register contains a value >= 0 it is interpreted as the
+   system call number that the kernel is supposed to restart.  */
+#define I386_LINUX_ORIG_EAX_REGNUM I386_SSE_NUM_REGS
+
+/* Return non-zero if REGNUM matches the ORIG_EAX register and the
+   register hack is active.  */
+extern int i386_linux_orig_eax_regnum_p (int regnum);
 
 /* FIXME: kettenis/2001-11-24: Obsolete macro's.  */
 #define FCS_REGNUM FISEG_REGNUM
 #define FCOFF_REGNUM FIOFF_REGNUM
 #define FDS_REGNUM FOSEG_REGNUM
 #define FDOFF_REGNUM FOOFF_REGNUM
-#define IS_FP_REGNUM(n) FP_REGNUM_P (n)
-#define IS_FPU_CTRL_REGNUM(n) FPC_REGNUM_P (n)
-#define IS_SSE_REGNUM(n) SSE_REGNUM_P (n)
+#define IS_FP_REGNUM(n) i386_fp_regnum_p (n)
+#define IS_FPU_CTRL_REGNUM(n) i386_fpc_regnum_p (n)
+#define IS_SSE_REGNUM(n) i386_sse_regnum_p (n)
 
 #define I386_NUM_GREGS	16
 #define I386_NUM_FREGS	16
Index: i386v-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/i386v-nat.c,v
retrieving revision 1.12
diff -u -r1.12 i386v-nat.c
--- i386v-nat.c	25 Oct 2002 18:50:23 -0000	1.12
+++ i386v-nat.c	6 Nov 2002 19:29:38 -0000
@@ -85,7 +85,7 @@
   struct user u;
   CORE_ADDR fpstate;
 
-  if (FP_REGNUM_P (regnum))
+  if (i386_fp_regnum_p (regnum))
     {
 #ifdef KSTKSZ			/* SCO, and others?  */
       blockend += 4 * (SS + 1) - KSTKSZ;