/* Host-dependent code for GDB, for NYU Ultra3 running Sym1 OS.
- Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
Contributed by David Wood (wood@nyu.edu) at New York University.
-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 <stdio.h>
#include "defs.h"
#include "frame.h"
#include "inferior.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 <sys/ptrace.h>
-
-/* 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;
-
-/*
- * Fetch an individual register (and supply it).
- * return 0 on success, -1 on failure.
- * NOTE: Assumes AMD's Binary Compatibility Standard for ptrace().
- */
-static void
-fetch_register (regno)
- 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, (int*)register_addr(regno,0), 0);
- if (errno != 0) {
- sprintf(buf,"reading register %s (#%d)",reg_names[regno],regno);
- perror_with_name (buf);
- } else {
- supply_register (regno, &val);
- }
- }
-}
-
-/* Get all available registers from the inferior. Registers that are
- * defined in REGISTER_NAMES, but not available to the user/gdb are
- * supplied as -1. This may include gr64-gr95 and the protected special
- * purpose registers.
- */
-
-void
-fetch_inferior_registers (regno)
- int regno;
-{
- register int i,j,ret_val=0;
- char buf[128];
-
- if (regno != -1) {
- fetch_register (regno);
- return;
- }
-
-/* Global Registers */
-#ifdef ULTRA3
- errno = 0;
- ptrace (PT_READ_STRUCT, inferior_pid, (int*)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 ; !ret_val && regno < GR96_REGNUM+32 ; regno++)
- fetch_register(regno);
-#endif
-
-/* Local Registers */
-#ifdef ULTRA3
- errno = 0;
- ptrace (PT_READ_STRUCT, inferior_pid, (int*)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 ; !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();
-}
-
-/* Store our register values back into the inferior.
- * If REGNO is -1, do this for all registers.
- * Otherwise, REGNO specifies which register (so we can save time).
- * NOTE: Assumes AMD's binary compatibility standard.
- */
-
-void
-store_inferior_registers (regno)
- int regno;
-{
- register unsigned int regaddr;
- char buf[80];
-
- if (regno >= 0)
- {
- if (CANNOT_STORE_REGISTER(regno))
- return;
- regaddr = register_addr (regno, 0);
- errno = 0;
- ptrace (PT_WRITE_U, inferior_pid,(int*)regaddr,read_register(regno));
- if (errno != 0)
- {
- sprintf (buf, "writing register %s (#%d)", reg_names[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);
- errno = 0;
- ptrace (PT_WRITE_STRUCT, inferior_pid, (int*)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);
- }
- 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, (int*)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;
- }
-#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 */
- }
-}
-
-/*
- * Read AMD's Binary Compatibilty Standard conforming core file.
- * struct ptrace_user is the first thing in the core file
- */
-
-void
-fetch_core_registers ()
-{
- 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);
- }
- }
-
- /* 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.
- */
-unsigned int
-register_addr (regno,blockend)
- unsigned int regno;
- char *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(stderr,"register_addr():Bad register %s (%d)\n",
- reg_names[regno],regno);
- return(0xffffffff); /* Should make ptrace() fail */
- }
- }
-}
-
+#include "gdb_stat.h"
/* Assorted operating system circumventions */
/* FIXME: Kludge this for now. It really should be system call. */
int
-getpagesize()
-{ return(8192); }
+getpagesize ()
+{
+ return (8192);
+}
/* FIXME: Fake out the fcntl() call, which we don't have. */
-fcntl(fd, cmd, arg)
-int fd, cmd, arg;
+fcntl (fd, cmd, arg)
+ int fd, cmd, arg;
{
- switch (cmd) {
- case F_GETFL: return(O_RDONLY); break;
- default:
- printf("Ultra3's fcntl() failing, cmd = %d.\n",cmd);
- return(-1);
- }
+ switch (cmd)
+ {
+ case F_GETFL:
+ return (O_RDONLY);
+ break;
+ default:
+ printf_unfiltered ("Ultra3's fcntl() failing, cmd = %d.\n", cmd);
+ return (-1);
+ }
}
/*
* 4.2 Signal support, requires linking with libjobs.
*/
-static int _SigMask;
+static int _SigMask;
#define sigbit(s) (1L << ((s)-1))
-init_SigMask()
+init_SigMask ()
{
- /* Taken from the sym1 kernel in machdep.c:startup() */
- _SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) |
- sigbit (SIGCHLD) | sigbit (SIGTINT);
+ /* Taken from the sym1 kernel in machdep.c:startup() */
+ _SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) |
+ sigbit (SIGCHLD) | sigbit (SIGTINT);
}
-sigmask(signo)
- int signo;
+sigmask (signo)
+ int signo;
{
- return (1 << (signo-1));
+ return (1 << (signo - 1));
}
-sigsetmask(sigmask)
-unsigned int sigmask;
+sigsetmask (sigmask)
+ unsigned int sigmask;
{
- int i, mask = 1;
- int lastmask = _SigMask;
+ int i, mask = 1;
+ int lastmask = _SigMask;
- for (i=0 ; i<NSIG ; i++) {
- if (sigmask & mask) {
- if (!(_SigMask & mask)) {
- sighold(i+1);
- _SigMask |= mask;
- }
- } else if (_SigMask & mask) {
- sigrelse(i+1);
- _SigMask &= ~mask;
- }
- mask <<= 1;
+ for (i = 0; i < NSIG; i++)
+ {
+ if (sigmask & mask)
+ {
+ if (!(_SigMask & mask))
+ {
+ sighold (i + 1);
+ _SigMask |= mask;
+ }
}
- return (lastmask);
+ else if (_SigMask & mask)
+ {
+ sigrelse (i + 1);
+ _SigMask &= ~mask;
+ }
+ mask <<= 1;
+ }
+ return (lastmask);
}
-sigblock(sigmask)
-unsigned int sigmask;
+sigblock (sigmask)
+ unsigned int sigmask;
{
- int i, mask = 1;
- int lastmask = _SigMask;
+ int i, mask = 1;
+ int lastmask = _SigMask;
- for (i=0 ; i<NSIG ; i++) {
- if ((sigmask & mask) && !(_SigMask & mask)) {
- sighold(i+1);
- _SigMask |= mask;
- }
- mask <<= 1;
+ for (i = 0; i < NSIG; i++)
+ {
+ if ((sigmask & mask) && !(_SigMask & mask))
+ {
+ sighold (i + 1);
+ _SigMask |= mask;
}
- return (lastmask);
+ mask <<= 1;
+ }
+ return (lastmask);
}
#endif /* SYM1 */
/* Initialization code for this module. */
+void
_initialize_ultra3 ()
{
#ifdef SYM1
- init_SigMask();
+ init_SigMask ();
#endif
}
projects / deliverable / binutils-gdb.git / blobdiff