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110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
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/* Machine independent support for SVR4 core files for GDB.
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Copyright 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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/* N O T E S
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This version of fetch_core_registers() is used by most systems that
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implement /proc. For these systems, the general registers are laid out
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the same way in both the core file and the gregset_p structure. The
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current exception to this is Irix-4.*, where the gregset_p structure is
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split up into two pieces in the core file.
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The general register and floating point register sets are manipulated by
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separate ioctl's. This file makes the assumption that if FP0_REGNUM is
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defined, then support for the floating point register set is desired,
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regardless of whether or not the actual target has floating point hardware.
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*/
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#include "defs.h"
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#include <time.h>
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#include <sys/procfs.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include "inferior.h"
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#include "target.h"
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#include "command.h"
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#include "gdbcore.h"
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/*
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GLOBAL FUNCTION
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fetch_core_registers -- fetch current registers from core file data
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SYNOPSIS
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void fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
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int which, unsigned in reg_addr)
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DESCRIPTION
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Read the values of either the general register set (WHICH equals 0)
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or the floating point register set (WHICH equals 2) from the core
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file data (pointed to by CORE_REG_SECT), and update gdb's idea of
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their current values. The CORE_REG_SIZE parameter is ignored.
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NOTES
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Use the indicated sizes to validate the gregset and fpregset
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structures.
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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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gregset_t gregset;
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fpregset_t fpregset;
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if (which == 0)
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{
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if (core_reg_size != sizeof (gregset))
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{
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warning ("wrong size gregset struct in core file");
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}
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else
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{
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memcpy ((char *) &gregset, core_reg_sect, sizeof (gregset));
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supply_gregset (&gregset);
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}
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}
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else if (which == 2)
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{
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if (core_reg_size != sizeof (fpregset))
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{
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warning ("wrong size fpregset struct in core file");
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}
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else
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{
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memcpy ((char *) &fpregset, core_reg_sect, sizeof (fpregset));
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#if defined (FP0_REGNUM)
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supply_fpregset (&fpregset);
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#endif
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}
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}
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}
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