/* 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.
#include "defs.h"
#include "gdbtypes.h"
+#include "gdbcore.h"
+#include "regcache.h"
-int
-i386nbsd_use_struct_convention (int gcc_p, struct type *type)
+#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);
}