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[deliverable/binutils-gdb.git] / gdb / i386nbsd-tdep.c

diff --git a/gdb/i386nbsd-tdep.c b/gdb/i386nbsd-tdep.c
index 4dfa6272371f0ceed3f7d6a5f47d44ab1bda507d..c327d426de4c58b8ffbf7e27e3a3163bf23d08aa 100644 (file)
--- a/gdb/i386nbsd-tdep.c
+++ b/gdb/i386nbsd-tdep.c
@@ -1,5 +1,5 @@
 /* Target-dependent code for NetBSD/i386, for GDB.
-   Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000
+   Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002
    Free Software Foundation, Inc.
 
    This file is part of GDB.
@@ -21,20 +21,125 @@
 
 #include "defs.h"
 #include "gdbtypes.h"
-#if 0
-#include <sys/types.h>
-#include <sys/ptrace.h>
-#include <machine/reg.h>
-#include <machine/frame.h>
-#include "inferior.h"
-#include "gdbcore.h" /* for registers_fetched() */
-#endif
-
-int
-i386nbsd_use_struct_convention (int gcc_p, struct type *type)
+#include "gdbcore.h"
+#include "regcache.h"
+
+#include "i387-tdep.h"
+
+/* Map a GDB register number to an offset in the reg structure.  */
+static int regmap[] =
+{
+  ( 0 * 4),            /* %eax */
+  ( 1 * 4),            /* %ecx */
+  ( 2 * 4),            /* %edx */
+  ( 3 * 4),            /* %ebx */
+  ( 4 * 4),            /* %esp */
+  ( 5 * 4),            /* %epb */
+  ( 6 * 4),            /* %esi */
+  ( 7 * 4),            /* %edi */
+  ( 8 * 4),            /* %eip */
+  ( 9 * 4),            /* %eflags */
+  (10 * 4),            /* %cs */
+  (11 * 4),            /* %ss */
+  (12 * 4),            /* %ds */
+  (13 * 4),            /* %es */
+  (14 * 4),            /* %fs */
+  (15 * 4),            /* %gs */
+};
+
+#define SIZEOF_STRUCT_REG      (16 * 4)
+
+static void
+i386nbsd_supply_reg (char *regs, int regno)
+{
+  int i;
+
+  for (i = 0; i <= 15; i++)
+    if (regno == i || regno == -1)
+      supply_register (i, regs + regmap[i]);
+}
+
+static void
+fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
+                      CORE_ADDR ignore)
+{
+  char *regs, *fsave;
+
+  /* We get everything from one section.  */
+  if (which != 0)
+    return;
+
+  if (core_reg_size < (SIZEOF_STRUCT_REG + 108))
+    {
+      warning ("Wrong size register set in core file.");
+      return;
+    }
+
+  regs = core_reg_sect;
+  fsave = core_reg_sect + SIZEOF_STRUCT_REG;
+
+  /* Integer registers.  */
+  i386nbsd_supply_reg (regs, -1);
+
+  /* Floating point registers.  */
+  i387_supply_fsave (fsave);
+}
+
+static void
+fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
+                         CORE_ADDR ignore)
+{
+  switch (which)
+    {
+    case 0:  /* Integer registers.  */
+      if (core_reg_size != SIZEOF_STRUCT_REG)
+       warning ("Wrong size register set in core file.");
+      else
+       i386nbsd_supply_reg (core_reg_sect, -1);
+      break;
+
+    case 2:  /* Floating point registers.  */
+      if (core_reg_size != 108)
+       warning ("Wrong size FP register set in core file."); 
+      else
+       i387_supply_fsave (core_reg_sect);  
+      break;
+
+    case 3:  /* "Extended" floating point registers.  This is gdb-speak
+               for SSE/SSE2. */
+      if (core_reg_size != 512)
+       warning ("Wrong size XMM register set in core file.");
+      else
+       i387_supply_fxsave (core_reg_sect);
+      break;
+
+    default:
+      /* Don't know what kind of register request this is; just ignore it.  */
+      break;
+    }
+}
+
+static struct core_fns i386nbsd_core_fns =
+{
+  bfd_target_unknown_flavour,          /* core_flavour */
+  default_check_format,                        /* check_format */
+  default_core_sniffer,                        /* core_sniffer */
+  fetch_core_registers,                        /* core_read_registers */
+  NULL                                 /* next */
+};
+
+static struct core_fns i386nbsd_elfcore_fns =
+{
+  bfd_target_elf_flavour,              /* core_flavour */
+  default_check_format,                        /* check_format */
+  default_core_sniffer,                        /* core_sniffer */
+  fetch_elfcore_registers,             /* core_read_registers */
+  NULL                                 /* next */
+};
+
+void
+_initialize_i386nbsd_tdep (void)
 {
-  return !(TYPE_LENGTH (type) == 1
-          || TYPE_LENGTH (type) == 2
-          || TYPE_LENGTH (type) == 4
-          || TYPE_LENGTH (type) == 8);
+  add_core_fns (&i386nbsd_core_fns);
+  add_core_fns (&i386nbsd_elfcore_fns);
 }