2002-06-07 Michal Ludvig <mludvig@suse.cz>

* x86-64-linux-nat.c (x86_64_fxsave_offset): New.
	(supply_fpregset, fill_fpregset): Don't call i387_*_fxsave,
	better do the things actually here.
	* x86-64-tdep.c (x86_64_register_name2nr): New.
	(x86_64_register_name): Renamed to x86_64_register_nr2name.
	(x86_64_gdbarch_init): Respect the above change.
	* x86-64-tdep.h (x86_64_register_name2nr)
	(x86_64_register_nr2name): Add prototypes.
	* config/i386/x86-64linux.mt (TDEPFILES): Remove i387-tdep.o.

gdb/ChangeLog

@@ -1,3 +1,15 @@
+2002-06-07  Michal Ludvig  <mludvig@suse.cz>
+
+	* x86-64-linux-nat.c (x86_64_fxsave_offset): New.
+	(supply_fpregset, fill_fpregset): Don't call i387_*_fxsave,
+	better do the things actually here.
+	* x86-64-tdep.c (x86_64_register_name2nr): New.
+	(x86_64_register_name): Renamed to x86_64_register_nr2name.
+	(x86_64_gdbarch_init): Respect the above change.
+	* x86-64-tdep.h (x86_64_register_name2nr)
+	(x86_64_register_nr2name): Add prototypes.
+	* config/i386/x86-64linux.mt (TDEPFILES): Remove i387-tdep.o.
+
 2002-06-06  Michael Snyder  <msnyder@redhat.com>
 
 	* d10v-tdep.c (d10v_push_arguments): Handle struct_return.

gdb/config/i386/x86-64linux.mt

@@ -1,3 +1,3 @@
 # Target: AMD x86-64 running GNU/Linux
-TDEPFILES= x86-64-tdep.o x86-64-linux-tdep.o i387-tdep.o dwarf2cfi.o \
+TDEPFILES= x86-64-tdep.o x86-64-linux-tdep.o dwarf2cfi.o \
 	solib.o solib-svr4.o solib-legacy.o

gdb/x86-64-linux-nat.c

@@ -25,7 +25,6 @@
 #include "inferior.h"
 #include "gdbcore.h"
 #include "regcache.h"
-#include "i387-tdep.h"
 #include "gdb_assert.h"
 #include "x86-64-tdep.h"
 
@@ -195,23 +194,73 @@ store_regs (int tid, int regno)
 
 /* Transfering floating-point registers between GDB, inferiors and cores.  */
 
-/* Fill GDB's register array with the floating-point register values in
-   *FPREGSETP.  */
+static void *
+x86_64_fxsave_offset (elf_fpregset_t * fxsave, int regnum)
+{
+  char *reg_name;
+  int reg_index;
+
+  gdb_assert (x86_64_num_gregs - 1 < regnum && regnum < x86_64_num_regs);
+
+  reg_name = x86_64_register_nr2name (regnum);
+
+  if (reg_name[0] == 's' && reg_name[1] == 't')
+    {
+      reg_index = reg_name[2] - '0';
+      return &fxsave->st_space[reg_index * 2];
+    }
+
+  if (reg_name[0] == 'x' && reg_name[1] == 'm' && reg_name[2] == 'm')
+    {
+      reg_index = reg_name[3] - '0';
+      return &fxsave->xmm_space[reg_index * 4];
+    }
+
+  if (strcmp (reg_name, "mxcsr") == 0)
+    return &fxsave->mxcsr;
+
+  return NULL;
+}
+
+/* Fill GDB's register array with the floating-point and SSE register
+   values in *FXSAVE.  This function masks off any of the reserved
+   bits in *FXSAVE.  */
 
 void
-supply_fpregset (elf_fpregset_t * fpregsetp)
+supply_fpregset (elf_fpregset_t * fxsave)
 {
-  i387_supply_fxsave ((char *) fpregsetp);
+  int i, reg_st0, reg_mxcsr;
+
+  reg_st0 = x86_64_register_name2nr ("st0");
+  reg_mxcsr = x86_64_register_name2nr ("mxcsr");
+
+  gdb_assert (reg_st0 > 0 && reg_mxcsr > reg_st0);
+
+  for (i = reg_st0; i <= reg_mxcsr; i++)
+    supply_register (i, x86_64_fxsave_offset (fxsave, i));
 }
 
-/* Fill register REGNO (if it is a floating-point register) in
-   *FPREGSETP with the value in GDB's register array.  If REGNO is -1,
-   do this for all registers.  */
+/* Fill register REGNUM (if it is a floating-point or SSE register) in
+   *FXSAVE with the value in GDB's register array.  If REGNUM is -1, do
+   this for all registers.  This function doesn't touch any of the
+   reserved bits in *FXSAVE.  */
 
 void
-fill_fpregset (elf_fpregset_t * fpregsetp, int regno)
+fill_fpregset (elf_fpregset_t * fxsave, int regnum)
 {
-  i387_fill_fxsave ((char *) fpregsetp, regno);
+  int i, last_regnum = MXCSR_REGNUM;
+  void *ptr;
+
+  if (gdbarch_tdep (current_gdbarch)->num_xmm_regs == 0)
+    last_regnum = FOP_REGNUM;
+
+  for (i = FP0_REGNUM; i <= last_regnum; i++)
+    if (regnum == -1 || regnum == i)
+      {
+	ptr = x86_64_fxsave_offset (fxsave, i);
+	if (ptr)
+	  regcache_collect (i, ptr);
+      }
 }
 
 /* Fetch all floating-point registers from process/thread TID and store

gdb/x86-64-tdep.c

@@ -376,14 +376,15 @@ classify_argument (struct type *type,
 		{
 		  int num = classify_argument (TYPE_FIELDS (type)[j].type,
 					       subclasses,
-					       (TYPE_FIELDS (type)[j].loc.bitpos
-						+ bit_offset) % 256);
+					       (TYPE_FIELDS (type)[j].loc.
+						bitpos + bit_offset) % 256);
 		  if (!num)
 		    return 0;
 		  for (i = 0; i < num; i++)
 		    {
 		      int pos =
-			(TYPE_FIELDS (type)[j].loc.bitpos + bit_offset) / 8 / 8;
+			(TYPE_FIELDS (type)[j].loc.bitpos +
+			 bit_offset) / 8 / 8;
 		      classes[i + pos] =
 			merge_classes (subclasses[i], classes[i + pos]);
 		    }
@@ -490,7 +491,7 @@ classify_argument (struct type *type,
 	}
     case TYPE_CODE_VOID:
       return 0;
-    default: /* Avoid warning.  */
+    default:			/* Avoid warning.  */
       break;
     }
   internal_error (__FILE__, __LINE__,
@@ -797,13 +798,24 @@ x86_64_store_return_value (struct type *type, char *valbuf)
 }
 
 
-static char *
-x86_64_register_name (int reg_nr)
+char *
+x86_64_register_nr2name (int reg_nr)
 {
   if (reg_nr < 0 || reg_nr >= X86_64_NUM_REGS)
     return NULL;
   return x86_64_register_info_table[reg_nr].name;
 }
+
+int
+x86_64_register_name2nr (const char *name)
+{
+  int reg_nr;
+
+  for (reg_nr = 0; reg_nr < X86_64_NUM_REGS; reg_nr++)
+    if (strcmp (name, x86_64_register_info_table[reg_nr].name) == 0)
+      return reg_nr;
+  return -1;
+}
 
 
 
@@ -862,7 +874,7 @@ x86_64_skip_prologue (CORE_ADDR pc)
   /* First check, whether pc points to pushq %rbp, movq %rsp,%rbp.  */
   for (i = 0; i < PROLOG_BUFSIZE; i++)
     if (prolog_expect[i] != prolog_buf[i])
-      return pc;	/* ... no, it doesn't. Nothing to skip.  */
+      return pc;		/* ... no, it doesn't. Nothing to skip.  */
 
   /* OK, we have found the prologue and want PC of the first 
      non-prologue instruction.  */
@@ -982,7 +994,7 @@ x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   set_gdbarch_long_double_format (gdbarch, &floatformat_i387_ext);
 
   set_gdbarch_num_regs (gdbarch, X86_64_NUM_REGS);
-  set_gdbarch_register_name (gdbarch, x86_64_register_name);
+  set_gdbarch_register_name (gdbarch, x86_64_register_nr2name);
   set_gdbarch_register_size (gdbarch, 8);
   set_gdbarch_register_raw_size (gdbarch, x86_64_register_raw_size);
   set_gdbarch_max_register_raw_size (gdbarch, 16);

gdb/x86-64-tdep.h

@@ -28,6 +28,9 @@
 extern int x86_64_num_regs;
 extern int x86_64_num_gregs;
 
+int x86_64_register_name2nr (const char *name);
+char *x86_64_register_nr2name (int reg_nr);
+
 gdbarch_frame_saved_pc_ftype x86_64_linux_frame_saved_pc;
 gdbarch_saved_pc_after_call_ftype x86_64_linux_saved_pc_after_call;