-/* Native-dependent code for Motorola 680x0 running LynxOS.
- Copyright 1986, 1987, 1989, 1991, 1993 Free Software Foundation, Inc.
-
-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 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. */
-
-#include "defs.h"
-#include "frame.h"
-#include "inferior.h"
-#include "gdbcore.h"
-#include "target.h"
-
-#include <sys/param.h>
-#include <sys/dir.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <itimer.h>
-#include <mem.h>
-#include <sys/time.h>
-#include <resource.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/ptrace.h>
-#include <kernel.h>
-#include <conf.h>
-#include <proc.h>
-#include <errno.h>
-
-/* Return the address in the core dump or inferior of register REGNO.
- BLOCKEND is the address of the end of the user structure. */
-
-static unsigned int
-core_register_addr (regno, blockend)
- unsigned int regno, blockend;
-{
- struct st_entry s;
- unsigned int offset;
-
- if (regno >= 0 && regno <= FP_REGNUM)
- offset = (char *) &s.ec.regs[regno] - (char *) &s;
- else if (regno == SP_REGNUM)
- offset = (char *) &s.stackp - (char *) &s;
- else if (regno == PS_REGNUM)
- offset = (char *) &s.ec.status - (char *) &s;
- else if (regno == PC_REGNUM)
- offset = (char *) &s.ec.pc - (char *) &s;
- else if (regno >= FP0_REGNUM && regno <= (FPC_REGNUM - 1))
- offset = (char *) &s.ec.fregs[(regno - FP0_REGNUM) * 3] - (char *) &s;
- else if (regno >= FPC_REGNUM && regno <= FPI_REGNUM)
- offset = (char *) &s.ec.fcregs[regno - FPC_REGNUM] - (char *) &s;
-
- return blockend + offset;
-}
-
-unsigned int
-register_addr (regno, blockend)
- int regno, blockend;
-{
- struct st_entry s;
- unsigned int offset;
-
- if (regno >= 0 && regno <= FP_REGNUM)
- offset = (char *) &s.ec.regs[regno] - (char *) &s.ec;
- else if (regno == SP_REGNUM)
- offset = (char *) &s.stackp - (char *) &s;
- else if (regno == PS_REGNUM)
- offset = (char *) &s.ec.status - (char *) &s.ec;
- else if (regno == PC_REGNUM)
- offset = (char *) &s.ec.pc - (char *) &s.ec;
- else if (regno >= FP0_REGNUM && regno <= (FPC_REGNUM - 1))
- offset = (char *) &s.ec.fregs[(regno - FP0_REGNUM) * 3] - (char *) &s.ec;
- else if (regno >= FPC_REGNUM && regno <= FPI_REGNUM)
- offset = (char *) &s.ec.fcregs[regno - FPC_REGNUM] - (char *) &s.ec;
-
- return blockend + offset;
-}
-
-#ifdef FETCH_INFERIOR_REGISTERS
-
-/* Fetch one register. */
-
-static void
-fetch_register (regno, offset, bpid)
- int regno, bpid;
- unsigned int offset;
-{
- char buf[MAX_REGISTER_RAW_SIZE], mess[128];
- unsigned int regaddr, i, ptrace_request;
-
- ptrace_request = regno != SP_REGNUM ? PTRACE_PEEKDATA : PTRACE_PEEKUSP;
- regaddr = register_addr (regno, offset);
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
- {
- errno = 0;
- *(int *) &buf[i] = ptrace (ptrace_request, bpid,
- (PTRACE_ARG3_TYPE) regaddr, 0);
- if (errno != 0)
- {
- sprintf (mess, "reading register %s (#%d)", reg_names[regno], regno);
- perror_with_name (mess);
- }
- regaddr += sizeof (int);
- }
- supply_register (regno, buf);
-}
-
-static void
-store_register (regno, offset, bpid)
- int regno, bpid;
- unsigned int offset;
-{
- unsigned int i, regaddr, ptrace_request;
- char mess[128];
-
- ptrace_request = regno != SP_REGNUM ? PTRACE_POKEUSER : PTRACE_POKEUSP;
- regaddr = register_addr (regno, offset);
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
- {
- errno = 0;
- ptrace (ptrace_request, bpid, (PTRACE_ARG3_TYPE) regaddr,
- *(int *) ®isters[REGISTER_BYTE (regno) + i]);
- if (errno != 0)
- {
- sprintf (mess, "writing register %s (#%d)", reg_names[regno], regno);
- perror_with_name (mess);
- }
- regaddr += sizeof (int);
- }
-}
-
-static unsigned int
-fetch_offset (pid, write)
- int pid, write;
-{
- struct st_entry s;
- unsigned int specpage_off, offset = (char *) &s.ecp - (char *) &s;
-
- if (write)
- {
- errno = 0;
- specpage_off = ptrace (PTRACE_THREADUSER, pid, (PTRACE_ARG3_TYPE) 0, 0);
- if (errno != 0)
- perror_with_name ("ptrace");
- errno = 0;
- offset = ptrace (PTRACE_PEEKTHREAD, pid, (PTRACE_ARG3_TYPE) offset, 0)
- - specpage_off;
- if (errno != 0)
- perror_with_name ("ptrace");
- }
- else
- {
- errno = 0;
- offset = ptrace (PTRACE_PEEKTHREAD, pid, (PTRACE_ARG3_TYPE) offset, 0);
- if (errno != 0)
- perror_with_name ("ptrace");
- }
- return offset;
-}
-
-void
-fetch_inferior_registers (regno)
- int regno;
-{
- unsigned int offset = fetch_offset (inferior_pid, 0);
-
- if (regno == -1)
- {
- for (regno = 0; regno < NUM_REGS; regno++)
- fetch_register (regno, offset, inferior_pid);
- }
- else
- fetch_register (regno, offset, inferior_pid);
-}
-
-void
-store_inferior_registers (regno)
- int regno;
-{
- unsigned int offset = fetch_offset (inferior_pid, 1);
-
- if (regno == -1)
- {
- for (regno = 0; regno < NUM_REGS; regno++)
- store_register (regno, offset, inferior_pid);
- }
- else
- store_register (regno, offset, inferior_pid);
-}
-
-void
-fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
- char *core_reg_sect;
- unsigned core_reg_size;
- int which;
- unsigned int reg_addr; /* Unused in this version */
-{
- unsigned int regno;
-
- for (regno = 0; regno < NUM_REGS; regno++)
- {
- unsigned int addr;
-
- addr = core_register_addr (regno, (unsigned) 0);
- supply_register (regno, core_reg_sect + addr);
- }
-}
-#endif /* FETCH_INFERIOR_REGISTERS */
-
-/* Wait for child to do something. Return pid of child, or -1 in case
- of error; store status through argument pointer STATUS. */
-
-int
-child_wait (pid, status)
- int pid;
- int *status;
-{
- int save_errno;
- int thread;
-
- while (1)
- {
- int sig;
-
- if (attach_flag)
- set_sigint_trap(); /* Causes SIGINT to be passed on to the
- attached process. */
- pid = wait (status);
- save_errno = errno;
-
- if (attach_flag)
- clear_sigint_trap();
-
- if (pid == -1)
- {
- if (save_errno == EINTR)
- continue;
- fprintf (stderr, "Child process unexpectedly missing: %s.\n",
- safe_strerror (save_errno));
- *status = 42; /* Claim it exited with signal 42 */
- return -1;
- }
-
- if (pid != PIDGET (inferior_pid)) /* Some other process?!? */
- continue;
-
-/* thread = WIFTID (*status);*/
- thread = *status >> 16;
-
- /* Initial thread value can only be acquired via wait, so we have to
- resort to this hack. */
-
- if (TIDGET (inferior_pid) == 0)
- {
- inferior_pid = BUILDPID (inferior_pid, thread);
- add_thread (inferior_pid);
- }
-
- pid = BUILDPID (pid, thread);
-
- return pid;
- }
-}
projects / deliverable / binutils-gdb.git / blobdiff