Please CVS, let me kill these files...
This commit is contained in:
Stu Grossman
parent
94333f2739
commit
4451055367
277
gdb/m68kly-nat.c
277
gdb/m68kly-nat.c
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/* Native-dependent code for Motorola 680x0 running LynxOS.
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Copyright 1986, 1987, 1989, 1991, 1993 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#include "gdbcore.h"
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#include "target.h"
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <itimer.h>
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#include <mem.h>
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#include <sys/time.h>
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#include <resource.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/ptrace.h>
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#include <kernel.h>
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#include <conf.h>
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#include <proc.h>
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#include <errno.h>
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/* Return the address in the core dump or inferior of register REGNO.
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BLOCKEND is the address of the end of the user structure. */
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static unsigned int
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core_register_addr (regno, blockend)
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unsigned int regno, blockend;
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{
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struct st_entry s;
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unsigned int offset;
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if (regno >= 0 && regno <= FP_REGNUM)
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offset = (char *) &s.ec.regs[regno] - (char *) &s;
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else if (regno == SP_REGNUM)
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offset = (char *) &s.stackp - (char *) &s;
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else if (regno == PS_REGNUM)
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offset = (char *) &s.ec.status - (char *) &s;
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else if (regno == PC_REGNUM)
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offset = (char *) &s.ec.pc - (char *) &s;
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else if (regno >= FP0_REGNUM && regno <= (FPC_REGNUM - 1))
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offset = (char *) &s.ec.fregs[(regno - FP0_REGNUM) * 3] - (char *) &s;
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else if (regno >= FPC_REGNUM && regno <= FPI_REGNUM)
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offset = (char *) &s.ec.fcregs[regno - FPC_REGNUM] - (char *) &s;
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return blockend + offset;
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}
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unsigned int
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register_addr (regno, blockend)
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int regno, blockend;
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{
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struct st_entry s;
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unsigned int offset;
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if (regno >= 0 && regno <= FP_REGNUM)
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offset = (char *) &s.ec.regs[regno] - (char *) &s.ec;
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else if (regno == SP_REGNUM)
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offset = (char *) &s.stackp - (char *) &s;
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else if (regno == PS_REGNUM)
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offset = (char *) &s.ec.status - (char *) &s.ec;
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else if (regno == PC_REGNUM)
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offset = (char *) &s.ec.pc - (char *) &s.ec;
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else if (regno >= FP0_REGNUM && regno <= (FPC_REGNUM - 1))
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offset = (char *) &s.ec.fregs[(regno - FP0_REGNUM) * 3] - (char *) &s.ec;
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else if (regno >= FPC_REGNUM && regno <= FPI_REGNUM)
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offset = (char *) &s.ec.fcregs[regno - FPC_REGNUM] - (char *) &s.ec;
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return blockend + offset;
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}
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#ifdef FETCH_INFERIOR_REGISTERS
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/* Fetch one register. */
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static void
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fetch_register (regno, offset, bpid)
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int regno, bpid;
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unsigned int offset;
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{
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char buf[MAX_REGISTER_RAW_SIZE], mess[128];
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unsigned int regaddr, i, ptrace_request;
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ptrace_request = regno != SP_REGNUM ? PTRACE_PEEKDATA : PTRACE_PEEKUSP;
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regaddr = register_addr (regno, offset);
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for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
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{
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errno = 0;
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*(int *) &buf[i] = ptrace (ptrace_request, bpid,
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(PTRACE_ARG3_TYPE) regaddr, 0);
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if (errno != 0)
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{
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sprintf (mess, "reading register %s (#%d)", reg_names[regno], regno);
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perror_with_name (mess);
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}
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regaddr += sizeof (int);
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}
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supply_register (regno, buf);
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}
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static void
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store_register (regno, offset, bpid)
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int regno, bpid;
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unsigned int offset;
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{
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unsigned int i, regaddr, ptrace_request;
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char mess[128];
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ptrace_request = regno != SP_REGNUM ? PTRACE_POKEUSER : PTRACE_POKEUSP;
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regaddr = register_addr (regno, offset);
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for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
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{
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errno = 0;
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ptrace (ptrace_request, bpid, (PTRACE_ARG3_TYPE) regaddr,
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*(int *) ®isters[REGISTER_BYTE (regno) + i]);
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if (errno != 0)
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{
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sprintf (mess, "writing register %s (#%d)", reg_names[regno], regno);
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perror_with_name (mess);
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}
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regaddr += sizeof (int);
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}
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}
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static unsigned int
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fetch_offset (pid, write)
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int pid, write;
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{
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struct st_entry s;
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unsigned int specpage_off, offset = (char *) &s.ecp - (char *) &s;
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if (write)
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{
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errno = 0;
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specpage_off = ptrace (PTRACE_THREADUSER, pid, (PTRACE_ARG3_TYPE) 0, 0);
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if (errno != 0)
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perror_with_name ("ptrace");
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errno = 0;
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offset = ptrace (PTRACE_PEEKTHREAD, pid, (PTRACE_ARG3_TYPE) offset, 0)
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- specpage_off;
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if (errno != 0)
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perror_with_name ("ptrace");
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}
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else
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{
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errno = 0;
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offset = ptrace (PTRACE_PEEKTHREAD, pid, (PTRACE_ARG3_TYPE) offset, 0);
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if (errno != 0)
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perror_with_name ("ptrace");
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}
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return offset;
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}
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void
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fetch_inferior_registers (regno)
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int regno;
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{
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unsigned int offset = fetch_offset (inferior_pid, 0);
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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fetch_register (regno, offset, inferior_pid);
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}
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else
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fetch_register (regno, offset, inferior_pid);
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}
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void
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store_inferior_registers (regno)
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int regno;
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{
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unsigned int offset = fetch_offset (inferior_pid, 1);
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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store_register (regno, offset, inferior_pid);
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}
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else
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store_register (regno, offset, inferior_pid);
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}
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void
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fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
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char *core_reg_sect;
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unsigned core_reg_size;
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int which;
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unsigned int reg_addr; /* Unused in this version */
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{
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unsigned int regno;
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for (regno = 0; regno < NUM_REGS; regno++)
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{
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unsigned int addr;
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addr = core_register_addr (regno, (unsigned) 0);
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supply_register (regno, core_reg_sect + addr);
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}
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}
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#endif /* FETCH_INFERIOR_REGISTERS */
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/* Wait for child to do something. Return pid of child, or -1 in case
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of error; store status through argument pointer STATUS. */
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int
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child_wait (pid, status)
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int pid;
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int *status;
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{
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int save_errno;
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int thread;
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while (1)
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{
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int sig;
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if (attach_flag)
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set_sigint_trap(); /* Causes SIGINT to be passed on to the
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attached process. */
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pid = wait (status);
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save_errno = errno;
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if (attach_flag)
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clear_sigint_trap();
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if (pid == -1)
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{
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if (save_errno == EINTR)
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continue;
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fprintf (stderr, "Child process unexpectedly missing: %s.\n",
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safe_strerror (save_errno));
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*status = 42; /* Claim it exited with signal 42 */
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return -1;
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}
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if (pid != PIDGET (inferior_pid)) /* Some other process?!? */
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continue;
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/* thread = WIFTID (*status);*/
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thread = *status >> 16;
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/* Initial thread value can only be acquired via wait, so we have to
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resort to this hack. */
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if (TIDGET (inferior_pid) == 0)
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{
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inferior_pid = BUILDPID (inferior_pid, thread);
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add_thread (inferior_pid);
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}
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pid = BUILDPID (pid, thread);
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return pid;
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}
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}
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