/* Low level Alpha interface, for GDB when running native.
- Copyright 1993 Free Software Foundation, Inc.
+ Copyright 1993, 1995, 1996, 1998 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "target.h"
#include <sys/ptrace.h>
-#include <machine/reg.h>
+#ifdef __linux__
+# include <asm/reg.h>
+# include <alpha/ptrace.h>
+#else
+# include <machine/reg.h>
+#endif
+#include <sys/user.h>
+
+/* Prototypes for local functions. */
+
+static void fetch_osf_core_registers PARAMS ((char *,
+ unsigned, int, CORE_ADDR));
+static void fetch_elf_core_registers PARAMS ((char *,
+ unsigned, int, CORE_ADDR));
/* Size of elements in jmpbuf */
Original upage address X is at location core_reg_sect+x+reg_addr.
*/
-void
-fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+static void
+fetch_osf_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
char *core_reg_sect;
unsigned core_reg_size;
int which;
- unsigned reg_addr;
+ CORE_ADDR reg_addr;
{
register int regno;
register int addr;
}
if (bad_reg >= 0)
{
- error ("Register %s not found in core file.", reg_names[bad_reg]);
+ error ("Register %s not found in core file.", REGISTER_NAME (bad_reg));
}
}
+static void
+fetch_elf_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+ char *core_reg_sect;
+ unsigned core_reg_size;
+ int which;
+ CORE_ADDR reg_addr;
+{
+ if (core_reg_size < 32*8)
+ {
+ error ("Core file register section too small (%u bytes).", core_reg_size);
+ return;
+ }
+
+ if (which == 2)
+ {
+ /* The FPU Registers. */
+ memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], core_reg_sect, 31*8);
+ memset (®isters[REGISTER_BYTE (FP0_REGNUM+31)], 0, 8);
+ memset (®ister_valid[FP0_REGNUM], 1, 32);
+ }
+ else
+ {
+ /* The General Registers. */
+ memcpy (®isters[REGISTER_BYTE (V0_REGNUM)], core_reg_sect, 31*8);
+ memcpy (®isters[REGISTER_BYTE (PC_REGNUM)], core_reg_sect+31*8, 8);
+ memset (®isters[REGISTER_BYTE (ZERO_REGNUM)], 0, 8);
+ memset (®ister_valid[V0_REGNUM], 1, 32);
+ register_valid[PC_REGNUM] = 1;
+ }
+}
+
+
/* Map gdb internal register number to a ptrace ``address''.
These ``addresses'' are defined in <sys/ptrace.h> */
/* Return the ptrace ``address'' of register REGNO. */
-unsigned int
+CORE_ADDR
register_addr (regno, blockend)
int regno;
- int blockend;
+ CORE_ADDR blockend;
{
return REGISTER_PTRACE_ADDR (regno);
}
+
+int
+kernel_u_size ()
+{
+ return (sizeof (struct user));
+}
+
+#if defined(USE_PROC_FS) || defined(HAVE_GREGSET_T)
+#include <sys/procfs.h>
+
+/*
+ * See the comment in m68k-tdep.c regarding the utility of these functions.
+ */
+
+void
+supply_gregset (gregsetp)
+ gregset_t *gregsetp;
+{
+ register int regi;
+ register long *regp = ALPHA_REGSET_BASE (gregsetp);
+ static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
+
+ for (regi = 0; regi < 31; regi++)
+ supply_register (regi, (char *)(regp + regi));
+
+ supply_register (PC_REGNUM, (char *)(regp + 31));
+
+ /* Fill inaccessible registers with zero. */
+ supply_register (ZERO_REGNUM, zerobuf);
+ supply_register (FP_REGNUM, zerobuf);
+}
+
+void
+fill_gregset (gregsetp, regno)
+ gregset_t *gregsetp;
+ int regno;
+{
+ int regi;
+ register long *regp = ALPHA_REGSET_BASE (gregsetp);
+
+ for (regi = 0; regi < 31; regi++)
+ if ((regno == -1) || (regno == regi))
+ *(regp + regi) = *(long *) ®isters[REGISTER_BYTE (regi)];
+
+ if ((regno == -1) || (regno == PC_REGNUM))
+ *(regp + 31) = *(long *) ®isters[REGISTER_BYTE (PC_REGNUM)];
+}
+
+/*
+ * Now we do the same thing for floating-point registers.
+ * Again, see the comments in m68k-tdep.c.
+ */
+
+void
+supply_fpregset (fpregsetp)
+ fpregset_t *fpregsetp;
+{
+ register int regi;
+ register long *regp = ALPHA_REGSET_BASE (fpregsetp);
+
+ for (regi = 0; regi < 32; regi++)
+ supply_register (regi + FP0_REGNUM, (char *)(regp + regi));
+}
+
+void
+fill_fpregset (fpregsetp, regno)
+ fpregset_t *fpregsetp;
+ int regno;
+{
+ int regi;
+ register long *regp = ALPHA_REGSET_BASE (fpregsetp);
+
+ for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++)
+ {
+ if ((regno == -1) || (regno == regi))
+ {
+ *(regp + regi - FP0_REGNUM) =
+ *(long *) ®isters[REGISTER_BYTE (regi)];
+ }
+ }
+}
+#endif
+
+\f
+/* Register that we are able to handle alpha core file formats. */
+
+static struct core_fns alpha_osf_core_fns =
+{
+ /* This really is bfd_target_unknown_flavour. */
+
+ bfd_target_unknown_flavour,
+ fetch_osf_core_registers,
+ NULL
+};
+
+static struct core_fns alpha_elf_core_fns =
+{
+ bfd_target_elf_flavour,
+ fetch_elf_core_registers,
+ NULL
+};
+
+void
+_initialize_core_alpha ()
+{
+ add_core_fns (&alpha_osf_core_fns);
+ add_core_fns (&alpha_elf_core_fns);
+}