-/* Host-dependent code for GDB, for NYU Ultra3 running Sym1 OS.
+/* Native-dependent code for GDB, for NYU Ultra3 running Sym1 OS.
Copyright (C) 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-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. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#define DEBUG
#include "defs.h"
#include <sys/param.h>
#include <signal.h>
#include <sys/ioctl.h>
-#include <fcntl.h>
+#include <fcntl.h>
#include "gdbcore.h"
#include <sys/file.h>
-#include <sys/stat.h>
+#include "gdb_stat.h"
+
+static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
+
+/* Assumes support for AMD's Binary Compatibility Standard
+ for ptrace(). If you define ULTRA3, the ultra3 extensions to
+ ptrace() are used allowing the reading of more than one register
+ at a time.
+
+ This file assumes KERNEL_DEBUGGING is turned off. This means
+ that if the user/gdb tries to read gr64-gr95 or any of the
+ protected special registers we silently return -1 (see the
+ CANNOT_STORE/FETCH_REGISTER macros). */
+#define ULTRA3
+
+#if !defined (offsetof)
+#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
+#endif
+
+extern int errno;
+struct ptrace_user pt_struct;
/* Get all available registers from the inferior. Registers that are
* defined in REGISTER_NAMES, but not available to the user/gdb are
void
fetch_inferior_registers (regno)
- int regno;
+ int regno;
{
- register int i,j,ret_val=0;
+ register int i, j, ret_val = 0;
char buf[128];
- if (regno != -1) {
- fetch_register (regno);
- return;
- }
+ if (regno != -1)
+ {
+ fetch_register (regno);
+ return;
+ }
/* Global Registers */
#ifdef ULTRA3
errno = 0;
ptrace (PT_READ_STRUCT, inferior_pid,
- (PTRACE_ARG3_TYPE) register_addr(GR96_REGNUM,0),
- (int)&pt_struct.pt_gr[0], 32*4);
- if (errno != 0) {
+ (PTRACE_ARG3_TYPE) register_addr (GR96_REGNUM, 0),
+ (int) &pt_struct.pt_gr[0], 32 * 4);
+ if (errno != 0)
+ {
perror_with_name ("reading global registers");
ret_val = -1;
- } else for (regno=GR96_REGNUM, j=0 ; j<32 ; regno++, j++) {
- supply_register (regno, &pt_struct.pt_gr[j]);
- }
+ }
+ else
+ for (regno = GR96_REGNUM, j = 0; j < 32; regno++, j++)
+ {
+ supply_register (regno, &pt_struct.pt_gr[j]);
+ }
#else
- for (regno=GR96_REGNUM ; !ret_val && regno < GR96_REGNUM+32 ; regno++)
- fetch_register(regno);
+ for (regno = GR96_REGNUM; !ret_val && regno < GR96_REGNUM + 32; regno++)
+ fetch_register (regno);
#endif
/* Local Registers */
#ifdef ULTRA3
errno = 0;
ptrace (PT_READ_STRUCT, inferior_pid,
- (PTRACE_ARG3_TYPE) register_addr(LR0_REGNUM,0),
- (int)&pt_struct.pt_lr[0], 128*4);
- if (errno != 0) {
+ (PTRACE_ARG3_TYPE) register_addr (LR0_REGNUM, 0),
+ (int) &pt_struct.pt_lr[0], 128 * 4);
+ if (errno != 0)
+ {
perror_with_name ("reading local registers");
ret_val = -1;
- } else for (regno=LR0_REGNUM, j=0 ; j<128 ; regno++, j++) {
- supply_register (regno, &pt_struct.pt_lr[j]);
- }
+ }
+ else
+ for (regno = LR0_REGNUM, j = 0; j < 128; regno++, j++)
+ {
+ supply_register (regno, &pt_struct.pt_lr[j]);
+ }
#else
- for (regno=LR0_REGNUM ; !ret_val && regno < LR0_REGNUM+128 ; regno++)
- fetch_register(regno);
+ for (regno = LR0_REGNUM; !ret_val && regno < LR0_REGNUM + 128; regno++)
+ fetch_register (regno);
#endif
/* Special Registers */
- fetch_register(GR1_REGNUM);
- fetch_register(CPS_REGNUM);
- fetch_register(PC_REGNUM);
- fetch_register(NPC_REGNUM);
- fetch_register(PC2_REGNUM);
- fetch_register(IPC_REGNUM);
- fetch_register(IPA_REGNUM);
- fetch_register(IPB_REGNUM);
- fetch_register(Q_REGNUM);
- fetch_register(BP_REGNUM);
- fetch_register(FC_REGNUM);
-
-/* Fake any registers that are in REGISTER_NAMES, but not available to gdb */
- registers_fetched();
+ fetch_register (GR1_REGNUM);
+ fetch_register (CPS_REGNUM);
+ fetch_register (PC_REGNUM);
+ fetch_register (NPC_REGNUM);
+ fetch_register (PC2_REGNUM);
+ fetch_register (IPC_REGNUM);
+ fetch_register (IPA_REGNUM);
+ fetch_register (IPB_REGNUM);
+ fetch_register (Q_REGNUM);
+ fetch_register (BP_REGNUM);
+ fetch_register (FC_REGNUM);
+
+/* Fake any registers that are in REGISTER_NAMES, but not available to gdb */
+ registers_fetched ();
}
/* Store our register values back into the inferior.
if (regno >= 0)
{
- if (CANNOT_STORE_REGISTER(regno))
+ if (CANNOT_STORE_REGISTER (regno))
return;
regaddr = register_addr (regno, 0);
errno = 0;
ptrace (PT_WRITE_U, inferior_pid,
- (PTRACE_ARG3_TYPE) regaddr, read_register(regno));
+ (PTRACE_ARG3_TYPE) regaddr, read_register (regno));
if (errno != 0)
{
- sprintf (buf, "writing register %s (#%d)", reg_names[regno],regno);
+ sprintf (buf, "writing register %s (#%d)", REGISTER_NAME (regno), regno);
perror_with_name (buf);
}
}
else
{
#ifdef ULTRA3
- pt_struct.pt_gr1 = read_register(GR1_REGNUM);
- for (regno = GR96_REGNUM; regno < GR96_REGNUM+32; regno++)
- pt_struct.pt_gr[regno] = read_register(regno);
- for (regno = LR0_REGNUM; regno < LR0_REGNUM+128; regno++)
- pt_struct.pt_gr[regno] = read_register(regno);
+ pt_struct.pt_gr1 = read_register (GR1_REGNUM);
+ for (regno = GR96_REGNUM; regno < GR96_REGNUM + 32; regno++)
+ pt_struct.pt_gr[regno] = read_register (regno);
+ for (regno = LR0_REGNUM; regno < LR0_REGNUM + 128; regno++)
+ pt_struct.pt_gr[regno] = read_register (regno);
errno = 0;
ptrace (PT_WRITE_STRUCT, inferior_pid,
- (PTRACE_ARG3_TYPE) register_addr(GR1_REGNUM,0),
- (int)&pt_struct.pt_gr1,(1*32*128)*4);
+ (PTRACE_ARG3_TYPE) register_addr (GR1_REGNUM, 0),
+ (int) &pt_struct.pt_gr1, (1 * 32 * 128) * 4);
if (errno != 0)
{
- sprintf (buf, "writing all local/global registers");
- perror_with_name (buf);
+ sprintf (buf, "writing all local/global registers");
+ perror_with_name (buf);
}
- pt_struct.pt_psr = read_register(CPS_REGNUM);
- pt_struct.pt_pc0 = read_register(NPC_REGNUM);
- pt_struct.pt_pc1 = read_register(PC_REGNUM);
- pt_struct.pt_pc2 = read_register(PC2_REGNUM);
- pt_struct.pt_ipc = read_register(IPC_REGNUM);
- pt_struct.pt_ipa = read_register(IPA_REGNUM);
- pt_struct.pt_ipb = read_register(IPB_REGNUM);
- pt_struct.pt_q = read_register(Q_REGNUM);
- pt_struct.pt_bp = read_register(BP_REGNUM);
- pt_struct.pt_fc = read_register(FC_REGNUM);
+ pt_struct.pt_psr = read_register (CPS_REGNUM);
+ pt_struct.pt_pc0 = read_register (NPC_REGNUM);
+ pt_struct.pt_pc1 = read_register (PC_REGNUM);
+ pt_struct.pt_pc2 = read_register (PC2_REGNUM);
+ pt_struct.pt_ipc = read_register (IPC_REGNUM);
+ pt_struct.pt_ipa = read_register (IPA_REGNUM);
+ pt_struct.pt_ipb = read_register (IPB_REGNUM);
+ pt_struct.pt_q = read_register (Q_REGNUM);
+ pt_struct.pt_bp = read_register (BP_REGNUM);
+ pt_struct.pt_fc = read_register (FC_REGNUM);
errno = 0;
ptrace (PT_WRITE_STRUCT, inferior_pid,
- (PTRACE_ARG3_TYPE) register_addr(CPS_REGNUM,0),
- (int)&pt_struct.pt_psr,(10)*4);
+ (PTRACE_ARG3_TYPE) register_addr (CPS_REGNUM, 0),
+ (int) &pt_struct.pt_psr, (10) * 4);
if (errno != 0)
{
- sprintf (buf, "writing all special registers");
- perror_with_name (buf);
- return;
+ sprintf (buf, "writing all special registers");
+ perror_with_name (buf);
+ return;
}
#else
- store_inferior_registers(GR1_REGNUM);
- for (regno=GR96_REGNUM ; regno<GR96_REGNUM+32 ; regno++)
- store_inferior_registers(regno);
- for (regno=LR0_REGNUM ; regno<LR0_REGNUM+128 ; regno++)
- store_inferior_registers(regno);
- store_inferior_registers(CPS_REGNUM);
- store_inferior_registers(PC_REGNUM);
- store_inferior_registers(NPC_REGNUM);
- store_inferior_registers(PC2_REGNUM);
- store_inferior_registers(IPC_REGNUM);
- store_inferior_registers(IPA_REGNUM);
- store_inferior_registers(IPB_REGNUM);
- store_inferior_registers(Q_REGNUM);
- store_inferior_registers(BP_REGNUM);
- store_inferior_registers(FC_REGNUM);
-#endif /* ULTRA3 */
+ store_inferior_registers (GR1_REGNUM);
+ for (regno = GR96_REGNUM; regno < GR96_REGNUM + 32; regno++)
+ store_inferior_registers (regno);
+ for (regno = LR0_REGNUM; regno < LR0_REGNUM + 128; regno++)
+ store_inferior_registers (regno);
+ store_inferior_registers (CPS_REGNUM);
+ store_inferior_registers (PC_REGNUM);
+ store_inferior_registers (NPC_REGNUM);
+ store_inferior_registers (PC2_REGNUM);
+ store_inferior_registers (IPC_REGNUM);
+ store_inferior_registers (IPA_REGNUM);
+ store_inferior_registers (IPB_REGNUM);
+ store_inferior_registers (Q_REGNUM);
+ store_inferior_registers (BP_REGNUM);
+ store_inferior_registers (FC_REGNUM);
+#endif /* ULTRA3 */
}
}
int regno;
{
char buf[128];
- int val;
-
- if (CANNOT_FETCH_REGISTER(regno)) {
- val = -1;
- supply_register (regno, &val);
- } else {
- errno = 0;
- val = ptrace (PT_READ_U, inferior_pid,
- (PTRACE_ARG3_TYPE) register_addr(regno,0), 0);
- if (errno != 0) {
- sprintf(buf,"reading register %s (#%d)",reg_names[regno],regno);
- perror_with_name (buf);
- } else {
+ int val;
+
+ if (CANNOT_FETCH_REGISTER (regno))
+ {
+ val = -1;
supply_register (regno, &val);
}
- }
+ else
+ {
+ errno = 0;
+ val = ptrace (PT_READ_U, inferior_pid,
+ (PTRACE_ARG3_TYPE) register_addr (regno, 0), 0);
+ if (errno != 0)
+ {
+ sprintf (buf, "reading register %s (#%d)", REGISTER_NAME (regno), regno);
+ perror_with_name (buf);
+ }
+ else
+ {
+ supply_register (regno, &val);
+ }
+ }
}
* struct ptrace_user is the first thing in the core file
*/
-void
-fetch_core_registers ()
+static void
+fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+ char *core_reg_sect; /* Unused in this version */
+ unsigned core_reg_size; /* Unused in this version */
+ int which; /* Unused in this version */
+ CORE_ADDR reg_addr; /* Unused in this version */
{
register int regno;
- int val;
- char buf[4];
-
- for (regno = 0 ; regno < NUM_REGS; regno++) {
- if (!CANNOT_FETCH_REGISTER(regno)) {
- val = bfd_seek (core_bfd, register_addr (regno, 0), 0);
- if (val < 0 || (val = bfd_read (buf, sizeof buf, 1, core_bfd)) < 0) {
- char * buffer = (char *) alloca (strlen (reg_names[regno]) + 35);
- strcpy (buffer, "Reading core register ");
- strcat (buffer, reg_names[regno]);
- perror_with_name (buffer);
- }
- supply_register (regno, buf);
+ int val;
+ char buf[4];
+
+ for (regno = 0; regno < NUM_REGS; regno++)
+ {
+ if (!CANNOT_FETCH_REGISTER (regno))
+ {
+ val = bfd_seek (core_bfd, (file_ptr) register_addr (regno, 0), SEEK_SET);
+ if (val < 0 || (val = bfd_read (buf, sizeof buf, 1, core_bfd)) < 0)
+ {
+ char *buffer = (char *) alloca (strlen (REGISTER_NAME (regno)) + 35);
+ strcpy (buffer, "Reading core register ");
+ strcat (buffer, REGISTER_NAME (regno));
+ perror_with_name (buffer);
+ }
+ supply_register (regno, buf);
+ }
}
- }
- /* Fake any registers that are in REGISTER_NAMES, but not available to gdb */
- registers_fetched();
+ /* Fake any registers that are in REGISTER_NAMES, but not available to gdb */
+ registers_fetched ();
}
+/*
+ * Takes a register number as defined in tm.h via REGISTER_NAMES, and maps
+ * it to an offset in a struct ptrace_user defined by AMD's BCS.
+ * That is, it defines the mapping between gdb register numbers and items in
+ * a struct ptrace_user.
+ * A register protection scheme is set up here. If a register not
+ * available to the user is specified in 'regno', then an address that
+ * will cause ptrace() to fail is returned.
+ */
+CORE_ADDR
+register_addr (regno, blockend)
+ int regno;
+ CORE_ADDR blockend;
+{
+ if ((regno >= LR0_REGNUM) && (regno < LR0_REGNUM + 128))
+ {
+ return (offsetof (struct ptrace_user, pt_lr[regno - LR0_REGNUM]));
+ }
+ else if ((regno >= GR96_REGNUM) && (regno < GR96_REGNUM + 32))
+ {
+ return (offsetof (struct ptrace_user, pt_gr[regno - GR96_REGNUM]));
+ }
+ else
+ {
+ switch (regno)
+ {
+ case GR1_REGNUM:
+ return (offsetof (struct ptrace_user, pt_gr1));
+ case CPS_REGNUM:
+ return (offsetof (struct ptrace_user, pt_psr));
+ case NPC_REGNUM:
+ return (offsetof (struct ptrace_user, pt_pc0));
+ case PC_REGNUM:
+ return (offsetof (struct ptrace_user, pt_pc1));
+ case PC2_REGNUM:
+ return (offsetof (struct ptrace_user, pt_pc2));
+ case IPC_REGNUM:
+ return (offsetof (struct ptrace_user, pt_ipc));
+ case IPA_REGNUM:
+ return (offsetof (struct ptrace_user, pt_ipa));
+ case IPB_REGNUM:
+ return (offsetof (struct ptrace_user, pt_ipb));
+ case Q_REGNUM:
+ return (offsetof (struct ptrace_user, pt_q));
+ case BP_REGNUM:
+ return (offsetof (struct ptrace_user, pt_bp));
+ case FC_REGNUM:
+ return (offsetof (struct ptrace_user, pt_fc));
+ default:
+ fprintf_filtered (gdb_stderr, "register_addr():Bad register %s (%d)\n",
+ REGISTER_NAME (regno), regno);
+ return (0xffffffff); /* Should make ptrace() fail */
+ }
+ }
+}
+\f
+
+/* Register that we are able to handle ultra3 core file formats.
+ FIXME: is this really bfd_target_unknown_flavour? */
+
+static struct core_fns ultra3_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 */
+};
+
+void
+_initialize_core_ultra3 ()
+{
+ add_core_fns (&ultra3_core_fns);
+}
projects / binutils.git / blobdiff