* mipsnbsd-tdep.c: Include "regset.h" and "gdb_assert.h".

(MIPS_PC_REGNUM, MIPS_FP0_REGNUM, MIPS_FSR_REGNUM)
(MIPSNBSD_NUM_GREGS, MIPSNBSD_NUM_FPREGS): New defines.
(fetch_core_registers, fetch_elfcore_registers): Remove functions.
(mipsnbsd_core_fns, mipsnbsd_elfcore_fns): Remove variables.
(mipsnbsd_core_osabi_sniffer): New function.
(mipsnbsd_init_abi): Set regset_from_core_section.
(_initialize_mipsnbsd_tdep): Remove calls to
deprecated_add_core_fns.
(mipsnbsd_supply_fpregset, mipsnbsd_supply_gregset)
(mipsnbsd_regset_from_core_section): New functions.
(mipsnbsd_gregset, mipsnbsd_fpregset): New variables.
* Makefile.in (mipsnbsd-tdep.o): Update dependencies.

1 files changed, 117 insertions, 68 deletions

diff --git a/gdb/mipsnbsd-tdep.c b/gdb/mipsnbsd-tdep.c
index 66b86b1..6031286 100644
--- a/gdb/mipsnbsd-tdep.c
+++ b/gdb/mipsnbsd-tdep.c
@@ -1,4 +1,5 @@
-/* Target-dependent code for MIPS systems running NetBSD.
+/* Target-dependent code for NetBSD/mips.
+
    Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
    Contributed by Wasabi Systems, Inc.
 
@@ -22,10 +23,12 @@
 #include "defs.h"
 #include "gdbcore.h"
 #include "regcache.h"
+#include "regset.h"
 #include "target.h"
 #include "value.h"
 #include "osabi.h"
 
+#include "gdb_assert.h"
 #include "gdb_string.h"
 
 #include "nbsd-tdep.h"
@@ -34,6 +37,106 @@
 
 #include "solib-svr4.h"
 
+/* Shorthand for some register numbers used below.  */
+#define MIPS_PC_REGNUM  MIPS_EMBED_PC_REGNUM
+#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
+#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
+
+/* Core file support.  */
+
+/* Number of registers in `struct reg' from <machine/reg.h>.  */
+#define MIPSNBSD_NUM_GREGS	38
+
+/* Number of registers in `struct fpreg' from <machine/reg.h>.  */
+#define MIPSNBSD_NUM_FPREGS	33
+
+/* Supply register REGNUM from the buffer specified by FPREGS and LEN
+   in the floating-point register set REGSET to register cache
+   REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
+
+static void
+mipsnbsd_supply_fpregset (const struct regset *regset,
+			  struct regcache *regcache,
+			  int regnum, const void *fpregs, size_t len)
+{
+  size_t regsize = mips_isa_regsize (get_regcache_arch (regcache));
+  const char *regs = fpregs;
+  int i;
+
+  gdb_assert (len >= MIPSNBSD_NUM_FPREGS * regsize);
+
+  for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
+    {
+      if (regnum == i || regnum == -1)
+	regcache_raw_supply (regcache, i,
+			     regs + (i - MIPS_FP0_REGNUM) * regsize);
+    }
+}
+
+/* Supply register REGNUM from the buffer specified by GREGS and LEN
+   in the general-purpose register set REGSET to register cache
+   REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
+
+static void
+mipsnbsd_supply_gregset (const struct regset *regset,
+			 struct regcache *regcache, int regnum,
+			 const void *gregs, size_t len)
+{
+  size_t regsize = mips_isa_regsize (get_regcache_arch (regcache));
+  const char *regs = gregs;
+  int i;
+
+  gdb_assert (len >= MIPSNBSD_NUM_GREGS * regsize);
+
+  for (i = 0; i <= MIPS_PC_REGNUM; i++)
+    {
+      if (regnum == i || regnum == -1)
+	regcache_raw_supply (regcache, i, regs + i * regsize);
+    }
+
+  if (len >= (MIPSNBSD_NUM_GREGS + MIPSNBSD_NUM_FPREGS) * regsize)
+    {
+      regs += MIPSNBSD_NUM_GREGS * regsize;
+      len -= MIPSNBSD_NUM_GREGS * regsize;
+      mipsnbsd_supply_fpregset (regset, regcache, regnum, regs, len);
+    }
+}
+
+/* NetBSD/mips register sets.  */
+
+static struct regset mipsnbsd_gregset =
+{
+  NULL,
+  mipsnbsd_supply_gregset
+};
+
+static struct regset mipsnbsd_fpregset =
+{
+  NULL,
+  mipsnbsd_supply_fpregset
+};
+
+/* Return the appropriate register set for the core section identified
+   by SECT_NAME and SECT_SIZE.  */
+
+static const struct regset *
+mipsnbsd_regset_from_core_section (struct gdbarch *gdbarch,
+				   const char *sect_name, size_t sect_size)
+{
+  size_t regsize = mips_isa_regsize (gdbarch);
+  
+  if (strcmp (sect_name, ".reg") == 0
+      && sect_size >= MIPSNBSD_NUM_GREGS * regsize)
+    return &mipsnbsd_gregset;
+
+  if (strcmp (sect_name, ".reg2") == 0
+      && sect_size >= MIPSNBSD_NUM_FPREGS * regsize)
+    return &mipsnbsd_fpregset;
+
+  return NULL;
+}
+
+
 /* Conveniently, GDB uses the same register numbering as the
    ptrace register structure used by NetBSD/mips.  */
 
@@ -98,70 +201,6 @@ mipsnbsd_fill_fpreg (char *fpregs, int regno)
 			    fpregs + ((i - FP0_REGNUM) * mips_isa_regsize (current_gdbarch)));
 }
 
-static void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
-                      CORE_ADDR ignore)
-{
-  char *regs, *fpregs;
-
-  /* We get everything from one section.  */
-  if (which != 0)
-    return;
-
-  regs = core_reg_sect;
-  fpregs = core_reg_sect + SIZEOF_STRUCT_REG;
-
-  /* Integer registers.  */
-  mipsnbsd_supply_reg (regs, -1);
-
-  /* Floating point registers.  */
-  mipsnbsd_supply_fpreg (fpregs, -1);
-}
-
-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
-	mipsnbsd_supply_reg (core_reg_sect, -1);
-      break;
-
-    case 2:  /* Floating point registers.  */
-      if (core_reg_size != SIZEOF_STRUCT_FPREG)
-	warning ("Wrong size register set in core file.");
-      else
-	mipsnbsd_supply_fpreg (core_reg_sect, -1);
-      break;
-
-    default:
-      /* Don't know what kind of register request this is; just ignore it.  */
-      break;
-    }
-}
-
-static struct core_fns mipsnbsd_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 mipsnbsd_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 */
-};
-
 /* Under NetBSD/mips, signal handler invocations can be identified by the
    designated code sequence that is used to return from a signal handler.
    In particular, the return address of a signal handler points to the
@@ -345,6 +384,9 @@ static void
 mipsnbsd_init_abi (struct gdbarch_info info,
                    struct gdbarch *gdbarch)
 {
+  set_gdbarch_regset_from_core_section
+    (gdbarch, mipsnbsd_regset_from_core_section);
+
   set_gdbarch_get_longjmp_target (gdbarch, mipsnbsd_get_longjmp_target);
 
   set_gdbarch_cannot_fetch_register (gdbarch, mipsnbsd_cannot_fetch_register);
@@ -357,13 +399,20 @@ mipsnbsd_init_abi (struct gdbarch_info info,
                             mipsnbsd_ilp32_solib_svr4_fetch_link_map_offsets :
 			    mipsnbsd_lp64_solib_svr4_fetch_link_map_offsets);
 }
+
+
+static enum gdb_osabi
+mipsnbsd_core_osabi_sniffer (bfd *abfd)
+{
+  if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
+    return GDB_OSABI_NETBSD_ELF;
+
+  return GDB_OSABI_UNKNOWN;
+}
 
 void
 _initialize_mipsnbsd_tdep (void)
 {
   gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_NETBSD_ELF,
 			  mipsnbsd_init_abi);
-
-  deprecated_add_core_fns (&mipsnbsd_core_fns);
-  deprecated_add_core_fns (&mipsnbsd_elfcore_fns);
 }