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author | jdp <jdp@FreeBSD.org> | 1998-09-14 20:53:47 +0000 |
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committer | jdp <jdp@FreeBSD.org> | 1998-09-14 20:53:47 +0000 |
commit | b100b6ea82e93cd71044e894699f773224c33a45 (patch) | |
tree | cb672f60f07787fe6fd6bc7b1eb99738d3b9f505 /contrib/gdb | |
parent | 278d2cda749d0c91d74aa4f9161044ad79505538 (diff) | |
download | FreeBSD-src-b100b6ea82e93cd71044e894699f773224c33a45.zip FreeBSD-src-b100b6ea82e93cd71044e894699f773224c33a45.tar.gz |
Bring core-regset.c back to life. It is needed for handling ELF
core dumps.
Diffstat (limited to 'contrib/gdb')
-rw-r--r-- | contrib/gdb/gdb/core-regset.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/core-regset.c b/contrib/gdb/gdb/core-regset.c new file mode 100644 index 0000000..68b0845 --- /dev/null +++ b/contrib/gdb/gdb/core-regset.c @@ -0,0 +1,130 @@ +/* Machine independent GDB support for core files on systems using "regsets". + Copyright 1993-1996 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + + +/* N O T E S + +This file is used by most systems that implement /proc. For these systems, +the general registers are laid out the same way in both the core file and +the gregset_p structure. The current exception to this is Irix-4.*, where +the gregset_p structure is split up into two pieces in the core file. + +The general register and floating point register sets are manipulated by +separate ioctl's. This file makes the assumption that if FP0_REGNUM is +defined, then support for the floating point register set is desired, +regardless of whether or not the actual target has floating point hardware. + + */ + +#include "defs.h" + +#include <time.h> +#ifdef HAVE_SYS_PROCFS_H +#include <sys/procfs.h> +#endif +#include <fcntl.h> +#include <errno.h> +#include "gdb_string.h" + +#include "inferior.h" +#include "target.h" +#include "command.h" +#include "gdbcore.h" + +/* + +GLOBAL FUNCTION + + fetch_core_registers -- fetch current registers from core file + +SYNOPSIS + + void fetch_core_registers (char *core_reg_sect, + unsigned core_reg_size, + int which, unsigned in reg_addr) + +DESCRIPTION + + Read the values of either the general register set (WHICH equals 0) + or the floating point register set (WHICH equals 2) from the core + file data (pointed to by CORE_REG_SECT), and update gdb's idea of + their current values. The CORE_REG_SIZE parameter is ignored. + +NOTES + + Use the indicated sizes to validate the gregset and fpregset + structures. +*/ + +static 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 */ +{ +#if defined (HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T) + gregset_t gregset; + fpregset_t fpregset; + + if (which == 0) + { + if (core_reg_size != sizeof (gregset)) + { + warning ("wrong size gregset struct in core file"); + } + else + { + memcpy ((char *) &gregset, core_reg_sect, sizeof (gregset)); + supply_gregset (&gregset); + } + } + else if (which == 2) + { + if (core_reg_size != sizeof (fpregset)) + { + warning ("wrong size fpregset struct in core file"); + } + else + { + memcpy ((char *) &fpregset, core_reg_sect, sizeof (fpregset)); +#if defined (FP0_REGNUM) + supply_fpregset (&fpregset); +#endif + } + } +#endif /* defined(HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T) */ +} + + +/* Register that we are able to handle ELF file formats using standard + procfs "regset" structures. */ + +static struct core_fns regset_core_fns = +{ + bfd_target_elf_flavour, + fetch_core_registers, + NULL +}; + +void +_initialize_core_regset () +{ + add_core_fns (®set_core_fns); +} |