/* PPC GNU/Linux native support.
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/* PPC GNU/Linux native support.
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Copyright (C) 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002, 2003,
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Copyright (C) 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002, 2003,
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2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
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2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "frame.h"
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#include "frame.h"
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#include "inferior.h"
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#include "inferior.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "regcache.h"
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#include "gdb_assert.h"
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#include "gdb_assert.h"
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#include "target.h"
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#include "target.h"
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#include "linux-nat.h"
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#include "linux-nat.h"
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#include <stdint.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/param.h>
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#include <signal.h>
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#include <signal.h>
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#include <sys/user.h>
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#include <sys/user.h>
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#include <sys/ioctl.h>
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#include <sys/ioctl.h>
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#include "gdb_wait.h"
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#include "gdb_wait.h"
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#include <fcntl.h>
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#include <fcntl.h>
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#include <sys/procfs.h>
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#include <sys/procfs.h>
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#include <sys/ptrace.h>
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#include <sys/ptrace.h>
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/* Prototypes for supply_gregset etc. */
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/* Prototypes for supply_gregset etc. */
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#include "gregset.h"
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#include "gregset.h"
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#include "ppc-tdep.h"
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#include "ppc-tdep.h"
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/* Glibc's headers don't define PTRACE_GETVRREGS so we cannot use a
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/* Glibc's headers don't define PTRACE_GETVRREGS so we cannot use a
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configure time check. Some older glibc's (for instance 2.2.1)
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configure time check. Some older glibc's (for instance 2.2.1)
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don't have a specific powerpc version of ptrace.h, and fall back on
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don't have a specific powerpc version of ptrace.h, and fall back on
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a generic one. In such cases, sys/ptrace.h defines
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a generic one. In such cases, sys/ptrace.h defines
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PTRACE_GETFPXREGS and PTRACE_SETFPXREGS to the same numbers that
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PTRACE_GETFPXREGS and PTRACE_SETFPXREGS to the same numbers that
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ppc kernel's asm/ptrace.h defines PTRACE_GETVRREGS and
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ppc kernel's asm/ptrace.h defines PTRACE_GETVRREGS and
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PTRACE_SETVRREGS to be. This also makes a configury check pretty
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PTRACE_SETVRREGS to be. This also makes a configury check pretty
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much useless. */
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much useless. */
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/* These definitions should really come from the glibc header files,
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/* These definitions should really come from the glibc header files,
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but Glibc doesn't know about the vrregs yet. */
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but Glibc doesn't know about the vrregs yet. */
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#ifndef PTRACE_GETVRREGS
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#ifndef PTRACE_GETVRREGS
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#define PTRACE_GETVRREGS 18
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#define PTRACE_GETVRREGS 18
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#define PTRACE_SETVRREGS 19
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#define PTRACE_SETVRREGS 19
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#endif
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#endif
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/* Similarly for the ptrace requests for getting / setting the SPE
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/* Similarly for the ptrace requests for getting / setting the SPE
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registers (ev0 -- ev31, acc, and spefscr). See the description of
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registers (ev0 -- ev31, acc, and spefscr). See the description of
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gdb_evrregset_t for details. */
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gdb_evrregset_t for details. */
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#ifndef PTRACE_GETEVRREGS
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#ifndef PTRACE_GETEVRREGS
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#define PTRACE_GETEVRREGS 20
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#define PTRACE_GETEVRREGS 20
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#define PTRACE_SETEVRREGS 21
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#define PTRACE_SETEVRREGS 21
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#endif
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#endif
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/* Similarly for the hardware watchpoint support. */
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/* Similarly for the hardware watchpoint support. */
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#ifndef PTRACE_GET_DEBUGREG
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#ifndef PTRACE_GET_DEBUGREG
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#define PTRACE_GET_DEBUGREG 25
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#define PTRACE_GET_DEBUGREG 25
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#endif
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#endif
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#ifndef PTRACE_SET_DEBUGREG
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#ifndef PTRACE_SET_DEBUGREG
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#define PTRACE_SET_DEBUGREG 26
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#define PTRACE_SET_DEBUGREG 26
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#endif
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#endif
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#ifndef PTRACE_GETSIGINFO
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#ifndef PTRACE_GETSIGINFO
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#define PTRACE_GETSIGINFO 0x4202
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#define PTRACE_GETSIGINFO 0x4202
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#endif
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#endif
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/* This oddity is because the Linux kernel defines elf_vrregset_t as
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/* This oddity is because the Linux kernel defines elf_vrregset_t as
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an array of 33 16 bytes long elements. I.e. it leaves out vrsave.
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an array of 33 16 bytes long elements. I.e. it leaves out vrsave.
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However the PTRACE_GETVRREGS and PTRACE_SETVRREGS requests return
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However the PTRACE_GETVRREGS and PTRACE_SETVRREGS requests return
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the vrsave as an extra 4 bytes at the end. I opted for creating a
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the vrsave as an extra 4 bytes at the end. I opted for creating a
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flat array of chars, so that it is easier to manipulate for gdb.
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flat array of chars, so that it is easier to manipulate for gdb.
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There are 32 vector registers 16 bytes longs, plus a VSCR register
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There are 32 vector registers 16 bytes longs, plus a VSCR register
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which is only 4 bytes long, but is fetched as a 16 bytes
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which is only 4 bytes long, but is fetched as a 16 bytes
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quantity. Up to here we have the elf_vrregset_t structure.
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quantity. Up to here we have the elf_vrregset_t structure.
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Appended to this there is space for the VRSAVE register: 4 bytes.
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Appended to this there is space for the VRSAVE register: 4 bytes.
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Even though this vrsave register is not included in the regset
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Even though this vrsave register is not included in the regset
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typedef, it is handled by the ptrace requests.
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typedef, it is handled by the ptrace requests.
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Note that GNU/Linux doesn't support little endian PPC hardware,
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Note that GNU/Linux doesn't support little endian PPC hardware,
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therefore the offset at which the real value of the VSCR register
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therefore the offset at which the real value of the VSCR register
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is located will be always 12 bytes.
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is located will be always 12 bytes.
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The layout is like this (where x is the actual value of the vscr reg): */
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The layout is like this (where x is the actual value of the vscr reg): */
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/* *INDENT-OFF* */
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/* *INDENT-OFF* */
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/*
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/*
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|.|.|.|.|.....|.|.|.|.||.|.|.|x||.|
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|.|.|.|.|.....|.|.|.|.||.|.|.|x||.|
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<-------> <-------><-------><->
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<-------> <-------><-------><->
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VR0 VR31 VSCR VRSAVE
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VR0 VR31 VSCR VRSAVE
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*/
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*/
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/* *INDENT-ON* */
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/* *INDENT-ON* */
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#define SIZEOF_VRREGS 33*16+4
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#define SIZEOF_VRREGS 33*16+4
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typedef char gdb_vrregset_t[SIZEOF_VRREGS];
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typedef char gdb_vrregset_t[SIZEOF_VRREGS];
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/* On PPC processors that support the the Signal Processing Extension
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/* On PPC processors that support the the Signal Processing Extension
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(SPE) APU, the general-purpose registers are 64 bits long.
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(SPE) APU, the general-purpose registers are 64 bits long.
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However, the ordinary Linux kernel PTRACE_PEEKUSER / PTRACE_POKEUSER
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However, the ordinary Linux kernel PTRACE_PEEKUSER / PTRACE_POKEUSER
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ptrace calls only access the lower half of each register, to allow
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ptrace calls only access the lower half of each register, to allow
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them to behave the same way they do on non-SPE systems. There's a
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them to behave the same way they do on non-SPE systems. There's a
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separate pair of calls, PTRACE_GETEVRREGS / PTRACE_SETEVRREGS, that
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separate pair of calls, PTRACE_GETEVRREGS / PTRACE_SETEVRREGS, that
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read and write the top halves of all the general-purpose registers
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read and write the top halves of all the general-purpose registers
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at once, along with some SPE-specific registers.
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at once, along with some SPE-specific registers.
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GDB itself continues to claim the general-purpose registers are 32
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GDB itself continues to claim the general-purpose registers are 32
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bits long. It has unnamed raw registers that hold the upper halves
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bits long. It has unnamed raw registers that hold the upper halves
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of the gprs, and the the full 64-bit SIMD views of the registers,
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of the gprs, and the the full 64-bit SIMD views of the registers,
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'ev0' -- 'ev31', are pseudo-registers that splice the top and
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'ev0' -- 'ev31', are pseudo-registers that splice the top and
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bottom halves together.
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bottom halves together.
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This is the structure filled in by PTRACE_GETEVRREGS and written to
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This is the structure filled in by PTRACE_GETEVRREGS and written to
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the inferior's registers by PTRACE_SETEVRREGS. */
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the inferior's registers by PTRACE_SETEVRREGS. */
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struct gdb_evrregset_t
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struct gdb_evrregset_t
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{
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{
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unsigned long evr[32];
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unsigned long evr[32];
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unsigned long long acc;
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unsigned long long acc;
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unsigned long spefscr;
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unsigned long spefscr;
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};
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};
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/* Non-zero if our kernel may support the PTRACE_GETVRREGS and
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/* Non-zero if our kernel may support the PTRACE_GETVRREGS and
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PTRACE_SETVRREGS requests, for reading and writing the Altivec
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PTRACE_SETVRREGS requests, for reading and writing the Altivec
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registers. Zero if we've tried one of them and gotten an
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registers. Zero if we've tried one of them and gotten an
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error. */
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error. */
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int have_ptrace_getvrregs = 1;
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int have_ptrace_getvrregs = 1;
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/* Non-zero if our kernel may support the PTRACE_GETEVRREGS and
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/* Non-zero if our kernel may support the PTRACE_GETEVRREGS and
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PTRACE_SETEVRREGS requests, for reading and writing the SPE
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PTRACE_SETEVRREGS requests, for reading and writing the SPE
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registers. Zero if we've tried one of them and gotten an
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registers. Zero if we've tried one of them and gotten an
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error. */
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error. */
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int have_ptrace_getsetevrregs = 1;
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int have_ptrace_getsetevrregs = 1;
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/* *INDENT-OFF* */
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/* *INDENT-OFF* */
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/* registers layout, as presented by the ptrace interface:
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/* registers layout, as presented by the ptrace interface:
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PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
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PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
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PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_R13, PT_R14, PT_R15,
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PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_R13, PT_R14, PT_R15,
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PT_R16, PT_R17, PT_R18, PT_R19, PT_R20, PT_R21, PT_R22, PT_R23,
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PT_R16, PT_R17, PT_R18, PT_R19, PT_R20, PT_R21, PT_R22, PT_R23,
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PT_R24, PT_R25, PT_R26, PT_R27, PT_R28, PT_R29, PT_R30, PT_R31,
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PT_R24, PT_R25, PT_R26, PT_R27, PT_R28, PT_R29, PT_R30, PT_R31,
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PT_FPR0, PT_FPR0 + 2, PT_FPR0 + 4, PT_FPR0 + 6, PT_FPR0 + 8, PT_FPR0 + 10, PT_FPR0 + 12, PT_FPR0 + 14,
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PT_FPR0, PT_FPR0 + 2, PT_FPR0 + 4, PT_FPR0 + 6, PT_FPR0 + 8, PT_FPR0 + 10, PT_FPR0 + 12, PT_FPR0 + 14,
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PT_FPR0 + 16, PT_FPR0 + 18, PT_FPR0 + 20, PT_FPR0 + 22, PT_FPR0 + 24, PT_FPR0 + 26, PT_FPR0 + 28, PT_FPR0 + 30,
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PT_FPR0 + 16, PT_FPR0 + 18, PT_FPR0 + 20, PT_FPR0 + 22, PT_FPR0 + 24, PT_FPR0 + 26, PT_FPR0 + 28, PT_FPR0 + 30,
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PT_FPR0 + 32, PT_FPR0 + 34, PT_FPR0 + 36, PT_FPR0 + 38, PT_FPR0 + 40, PT_FPR0 + 42, PT_FPR0 + 44, PT_FPR0 + 46,
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PT_FPR0 + 32, PT_FPR0 + 34, PT_FPR0 + 36, PT_FPR0 + 38, PT_FPR0 + 40, PT_FPR0 + 42, PT_FPR0 + 44, PT_FPR0 + 46,
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PT_FPR0 + 48, PT_FPR0 + 50, PT_FPR0 + 52, PT_FPR0 + 54, PT_FPR0 + 56, PT_FPR0 + 58, PT_FPR0 + 60, PT_FPR0 + 62,
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PT_FPR0 + 48, PT_FPR0 + 50, PT_FPR0 + 52, PT_FPR0 + 54, PT_FPR0 + 56, PT_FPR0 + 58, PT_FPR0 + 60, PT_FPR0 + 62,
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PT_NIP, PT_MSR, PT_CCR, PT_LNK, PT_CTR, PT_XER, PT_MQ */
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PT_NIP, PT_MSR, PT_CCR, PT_LNK, PT_CTR, PT_XER, PT_MQ */
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/* *INDENT_ON * */
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/* *INDENT_ON * */
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static int
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static int
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ppc_register_u_addr (struct gdbarch *gdbarch, int regno)
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ppc_register_u_addr (struct gdbarch *gdbarch, int regno)
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{
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{
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int u_addr = -1;
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int u_addr = -1;
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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/* NOTE: cagney/2003-11-25: This is the word size used by the ptrace
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/* NOTE: cagney/2003-11-25: This is the word size used by the ptrace
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interface, and not the wordsize of the program's ABI. */
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interface, and not the wordsize of the program's ABI. */
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int wordsize = sizeof (long);
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int wordsize = sizeof (long);
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/* General purpose registers occupy 1 slot each in the buffer */
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/* General purpose registers occupy 1 slot each in the buffer */
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if (regno >= tdep->ppc_gp0_regnum
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if (regno >= tdep->ppc_gp0_regnum
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&& regno < tdep->ppc_gp0_regnum + ppc_num_gprs)
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&& regno < tdep->ppc_gp0_regnum + ppc_num_gprs)
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u_addr = ((regno - tdep->ppc_gp0_regnum + PT_R0) * wordsize);
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u_addr = ((regno - tdep->ppc_gp0_regnum + PT_R0) * wordsize);
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/* Floating point regs: eight bytes each in both 32- and 64-bit
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/* Floating point regs: eight bytes each in both 32- and 64-bit
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ptrace interfaces. Thus, two slots each in 32-bit interface, one
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ptrace interfaces. Thus, two slots each in 32-bit interface, one
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slot each in 64-bit interface. */
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slot each in 64-bit interface. */
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if (tdep->ppc_fp0_regnum >= 0
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if (tdep->ppc_fp0_regnum >= 0
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&& regno >= tdep->ppc_fp0_regnum
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&& regno >= tdep->ppc_fp0_regnum
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&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)
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&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)
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u_addr = (PT_FPR0 * wordsize) + ((regno - tdep->ppc_fp0_regnum) * 8);
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u_addr = (PT_FPR0 * wordsize) + ((regno - tdep->ppc_fp0_regnum) * 8);
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/* UISA special purpose registers: 1 slot each */
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/* UISA special purpose registers: 1 slot each */
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if (regno == gdbarch_pc_regnum (gdbarch))
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if (regno == gdbarch_pc_regnum (gdbarch))
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u_addr = PT_NIP * wordsize;
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u_addr = PT_NIP * wordsize;
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if (regno == tdep->ppc_lr_regnum)
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if (regno == tdep->ppc_lr_regnum)
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u_addr = PT_LNK * wordsize;
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u_addr = PT_LNK * wordsize;
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if (regno == tdep->ppc_cr_regnum)
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if (regno == tdep->ppc_cr_regnum)
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u_addr = PT_CCR * wordsize;
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u_addr = PT_CCR * wordsize;
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if (regno == tdep->ppc_xer_regnum)
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if (regno == tdep->ppc_xer_regnum)
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u_addr = PT_XER * wordsize;
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u_addr = PT_XER * wordsize;
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if (regno == tdep->ppc_ctr_regnum)
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if (regno == tdep->ppc_ctr_regnum)
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u_addr = PT_CTR * wordsize;
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u_addr = PT_CTR * wordsize;
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#ifdef PT_MQ
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#ifdef PT_MQ
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if (regno == tdep->ppc_mq_regnum)
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if (regno == tdep->ppc_mq_regnum)
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u_addr = PT_MQ * wordsize;
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u_addr = PT_MQ * wordsize;
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#endif
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#endif
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if (regno == tdep->ppc_ps_regnum)
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if (regno == tdep->ppc_ps_regnum)
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u_addr = PT_MSR * wordsize;
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u_addr = PT_MSR * wordsize;
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if (tdep->ppc_fpscr_regnum >= 0
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if (tdep->ppc_fpscr_regnum >= 0
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&& regno == tdep->ppc_fpscr_regnum)
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&& regno == tdep->ppc_fpscr_regnum)
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{
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{
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/* NOTE: cagney/2005-02-08: On some 64-bit GNU/Linux systems the
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/* NOTE: cagney/2005-02-08: On some 64-bit GNU/Linux systems the
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kernel headers incorrectly contained the 32-bit definition of
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kernel headers incorrectly contained the 32-bit definition of
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PT_FPSCR. For the 32-bit definition, floating-point
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PT_FPSCR. For the 32-bit definition, floating-point
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registers occupy two 32-bit "slots", and the FPSCR lives in
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registers occupy two 32-bit "slots", and the FPSCR lives in
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the secondhalf of such a slot-pair (hence +1). For 64-bit,
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the secondhalf of such a slot-pair (hence +1). For 64-bit,
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the FPSCR instead occupies the full 64-bit 2-word-slot and
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the FPSCR instead occupies the full 64-bit 2-word-slot and
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hence no adjustment is necessary. Hack around this. */
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hence no adjustment is necessary. Hack around this. */
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if (wordsize == 8 && PT_FPSCR == (48 + 32 + 1))
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if (wordsize == 8 && PT_FPSCR == (48 + 32 + 1))
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u_addr = (48 + 32) * wordsize;
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u_addr = (48 + 32) * wordsize;
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else
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else
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u_addr = PT_FPSCR * wordsize;
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u_addr = PT_FPSCR * wordsize;
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}
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}
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return u_addr;
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return u_addr;
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}
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}
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/* The Linux kernel ptrace interface for AltiVec registers uses the
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/* The Linux kernel ptrace interface for AltiVec registers uses the
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registers set mechanism, as opposed to the interface for all the
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registers set mechanism, as opposed to the interface for all the
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other registers, that stores/fetches each register individually. */
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other registers, that stores/fetches each register individually. */
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static void
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static void
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fetch_altivec_register (struct regcache *regcache, int tid, int regno)
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fetch_altivec_register (struct regcache *regcache, int tid, int regno)
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{
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{
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int ret;
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int ret;
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int offset = 0;
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int offset = 0;
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gdb_vrregset_t regs;
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gdb_vrregset_t regs;
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
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int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
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ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
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ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
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if (ret < 0)
|
if (ret < 0)
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{
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{
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if (errno == EIO)
|
if (errno == EIO)
|
{
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{
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have_ptrace_getvrregs = 0;
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have_ptrace_getvrregs = 0;
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return;
|
return;
|
}
|
}
|
perror_with_name (_("Unable to fetch AltiVec register"));
|
perror_with_name (_("Unable to fetch AltiVec register"));
|
}
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}
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/* VSCR is fetched as a 16 bytes quantity, but it is really 4 bytes
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/* VSCR is fetched as a 16 bytes quantity, but it is really 4 bytes
|
long on the hardware. We deal only with the lower 4 bytes of the
|
long on the hardware. We deal only with the lower 4 bytes of the
|
vector. VRSAVE is at the end of the array in a 4 bytes slot, so
|
vector. VRSAVE is at the end of the array in a 4 bytes slot, so
|
there is no need to define an offset for it. */
|
there is no need to define an offset for it. */
|
if (regno == (tdep->ppc_vrsave_regnum - 1))
|
if (regno == (tdep->ppc_vrsave_regnum - 1))
|
offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
|
|
regcache_raw_supply (regcache, regno,
|
regcache_raw_supply (regcache, regno,
|
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
|
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
|
}
|
}
|
|
|
/* Fetch the top 32 bits of TID's general-purpose registers and the
|
/* Fetch the top 32 bits of TID's general-purpose registers and the
|
SPE-specific registers, and place the results in EVRREGSET. If we
|
SPE-specific registers, and place the results in EVRREGSET. If we
|
don't support PTRACE_GETEVRREGS, then just fill EVRREGSET with
|
don't support PTRACE_GETEVRREGS, then just fill EVRREGSET with
|
zeros.
|
zeros.
|
|
|
All the logic to deal with whether or not the PTRACE_GETEVRREGS and
|
All the logic to deal with whether or not the PTRACE_GETEVRREGS and
|
PTRACE_SETEVRREGS requests are supported is isolated here, and in
|
PTRACE_SETEVRREGS requests are supported is isolated here, and in
|
set_spe_registers. */
|
set_spe_registers. */
|
static void
|
static void
|
get_spe_registers (int tid, struct gdb_evrregset_t *evrregset)
|
get_spe_registers (int tid, struct gdb_evrregset_t *evrregset)
|
{
|
{
|
if (have_ptrace_getsetevrregs)
|
if (have_ptrace_getsetevrregs)
|
{
|
{
|
if (ptrace (PTRACE_GETEVRREGS, tid, 0, evrregset) >= 0)
|
if (ptrace (PTRACE_GETEVRREGS, tid, 0, evrregset) >= 0)
|
return;
|
return;
|
else
|
else
|
{
|
{
|
/* EIO means that the PTRACE_GETEVRREGS request isn't supported;
|
/* EIO means that the PTRACE_GETEVRREGS request isn't supported;
|
we just return zeros. */
|
we just return zeros. */
|
if (errno == EIO)
|
if (errno == EIO)
|
have_ptrace_getsetevrregs = 0;
|
have_ptrace_getsetevrregs = 0;
|
else
|
else
|
/* Anything else needs to be reported. */
|
/* Anything else needs to be reported. */
|
perror_with_name (_("Unable to fetch SPE registers"));
|
perror_with_name (_("Unable to fetch SPE registers"));
|
}
|
}
|
}
|
}
|
|
|
memset (evrregset, 0, sizeof (*evrregset));
|
memset (evrregset, 0, sizeof (*evrregset));
|
}
|
}
|
|
|
/* Supply values from TID for SPE-specific raw registers: the upper
|
/* Supply values from TID for SPE-specific raw registers: the upper
|
halves of the GPRs, the accumulator, and the spefscr. REGNO must
|
halves of the GPRs, the accumulator, and the spefscr. REGNO must
|
be the number of an upper half register, acc, spefscr, or -1 to
|
be the number of an upper half register, acc, spefscr, or -1 to
|
supply the values of all registers. */
|
supply the values of all registers. */
|
static void
|
static void
|
fetch_spe_register (struct regcache *regcache, int tid, int regno)
|
fetch_spe_register (struct regcache *regcache, int tid, int regno)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdb_evrregset_t evrregs;
|
struct gdb_evrregset_t evrregs;
|
|
|
gdb_assert (sizeof (evrregs.evr[0])
|
gdb_assert (sizeof (evrregs.evr[0])
|
== register_size (gdbarch, tdep->ppc_ev0_upper_regnum));
|
== register_size (gdbarch, tdep->ppc_ev0_upper_regnum));
|
gdb_assert (sizeof (evrregs.acc)
|
gdb_assert (sizeof (evrregs.acc)
|
== register_size (gdbarch, tdep->ppc_acc_regnum));
|
== register_size (gdbarch, tdep->ppc_acc_regnum));
|
gdb_assert (sizeof (evrregs.spefscr)
|
gdb_assert (sizeof (evrregs.spefscr)
|
== register_size (gdbarch, tdep->ppc_spefscr_regnum));
|
== register_size (gdbarch, tdep->ppc_spefscr_regnum));
|
|
|
get_spe_registers (tid, &evrregs);
|
get_spe_registers (tid, &evrregs);
|
|
|
if (regno == -1)
|
if (regno == -1)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i = 0; i < ppc_num_gprs; i++)
|
for (i = 0; i < ppc_num_gprs; i++)
|
regcache_raw_supply (regcache, tdep->ppc_ev0_upper_regnum + i,
|
regcache_raw_supply (regcache, tdep->ppc_ev0_upper_regnum + i,
|
&evrregs.evr[i]);
|
&evrregs.evr[i]);
|
}
|
}
|
else if (tdep->ppc_ev0_upper_regnum <= regno
|
else if (tdep->ppc_ev0_upper_regnum <= regno
|
&& regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs)
|
&& regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs)
|
regcache_raw_supply (regcache, regno,
|
regcache_raw_supply (regcache, regno,
|
&evrregs.evr[regno - tdep->ppc_ev0_upper_regnum]);
|
&evrregs.evr[regno - tdep->ppc_ev0_upper_regnum]);
|
|
|
if (regno == -1
|
if (regno == -1
|
|| regno == tdep->ppc_acc_regnum)
|
|| regno == tdep->ppc_acc_regnum)
|
regcache_raw_supply (regcache, tdep->ppc_acc_regnum, &evrregs.acc);
|
regcache_raw_supply (regcache, tdep->ppc_acc_regnum, &evrregs.acc);
|
|
|
if (regno == -1
|
if (regno == -1
|
|| regno == tdep->ppc_spefscr_regnum)
|
|| regno == tdep->ppc_spefscr_regnum)
|
regcache_raw_supply (regcache, tdep->ppc_spefscr_regnum,
|
regcache_raw_supply (regcache, tdep->ppc_spefscr_regnum,
|
&evrregs.spefscr);
|
&evrregs.spefscr);
|
}
|
}
|
|
|
static void
|
static void
|
fetch_register (struct regcache *regcache, int tid, int regno)
|
fetch_register (struct regcache *regcache, int tid, int regno)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
/* This isn't really an address. But ptrace thinks of it as one. */
|
/* This isn't really an address. But ptrace thinks of it as one. */
|
CORE_ADDR regaddr = ppc_register_u_addr (gdbarch, regno);
|
CORE_ADDR regaddr = ppc_register_u_addr (gdbarch, regno);
|
int bytes_transferred;
|
int bytes_transferred;
|
unsigned int offset; /* Offset of registers within the u area. */
|
unsigned int offset; /* Offset of registers within the u area. */
|
char buf[MAX_REGISTER_SIZE];
|
char buf[MAX_REGISTER_SIZE];
|
|
|
if (altivec_register_p (gdbarch, regno))
|
if (altivec_register_p (gdbarch, regno))
|
{
|
{
|
/* If this is the first time through, or if it is not the first
|
/* If this is the first time through, or if it is not the first
|
time through, and we have comfirmed that there is kernel
|
time through, and we have comfirmed that there is kernel
|
support for such a ptrace request, then go and fetch the
|
support for such a ptrace request, then go and fetch the
|
register. */
|
register. */
|
if (have_ptrace_getvrregs)
|
if (have_ptrace_getvrregs)
|
{
|
{
|
fetch_altivec_register (regcache, tid, regno);
|
fetch_altivec_register (regcache, tid, regno);
|
return;
|
return;
|
}
|
}
|
/* If we have discovered that there is no ptrace support for
|
/* If we have discovered that there is no ptrace support for
|
AltiVec registers, fall through and return zeroes, because
|
AltiVec registers, fall through and return zeroes, because
|
regaddr will be -1 in this case. */
|
regaddr will be -1 in this case. */
|
}
|
}
|
else if (spe_register_p (gdbarch, regno))
|
else if (spe_register_p (gdbarch, regno))
|
{
|
{
|
fetch_spe_register (regcache, tid, regno);
|
fetch_spe_register (regcache, tid, regno);
|
return;
|
return;
|
}
|
}
|
|
|
if (regaddr == -1)
|
if (regaddr == -1)
|
{
|
{
|
memset (buf, '\0', register_size (gdbarch, regno)); /* Supply zeroes */
|
memset (buf, '\0', register_size (gdbarch, regno)); /* Supply zeroes */
|
regcache_raw_supply (regcache, regno, buf);
|
regcache_raw_supply (regcache, regno, buf);
|
return;
|
return;
|
}
|
}
|
|
|
/* Read the raw register using sizeof(long) sized chunks. On a
|
/* Read the raw register using sizeof(long) sized chunks. On a
|
32-bit platform, 64-bit floating-point registers will require two
|
32-bit platform, 64-bit floating-point registers will require two
|
transfers. */
|
transfers. */
|
for (bytes_transferred = 0;
|
for (bytes_transferred = 0;
|
bytes_transferred < register_size (gdbarch, regno);
|
bytes_transferred < register_size (gdbarch, regno);
|
bytes_transferred += sizeof (long))
|
bytes_transferred += sizeof (long))
|
{
|
{
|
errno = 0;
|
errno = 0;
|
*(long *) &buf[bytes_transferred]
|
*(long *) &buf[bytes_transferred]
|
= ptrace (PTRACE_PEEKUSER, tid, (PTRACE_TYPE_ARG3) regaddr, 0);
|
= ptrace (PTRACE_PEEKUSER, tid, (PTRACE_TYPE_ARG3) regaddr, 0);
|
regaddr += sizeof (long);
|
regaddr += sizeof (long);
|
if (errno != 0)
|
if (errno != 0)
|
{
|
{
|
char message[128];
|
char message[128];
|
sprintf (message, "reading register %s (#%d)",
|
sprintf (message, "reading register %s (#%d)",
|
gdbarch_register_name (gdbarch, regno), regno);
|
gdbarch_register_name (gdbarch, regno), regno);
|
perror_with_name (message);
|
perror_with_name (message);
|
}
|
}
|
}
|
}
|
|
|
/* Now supply the register. Keep in mind that the regcache's idea
|
/* Now supply the register. Keep in mind that the regcache's idea
|
of the register's size may not be a multiple of sizeof
|
of the register's size may not be a multiple of sizeof
|
(long). */
|
(long). */
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
|
{
|
{
|
/* Little-endian values are always found at the left end of the
|
/* Little-endian values are always found at the left end of the
|
bytes transferred. */
|
bytes transferred. */
|
regcache_raw_supply (regcache, regno, buf);
|
regcache_raw_supply (regcache, regno, buf);
|
}
|
}
|
else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
|
else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
|
{
|
{
|
/* Big-endian values are found at the right end of the bytes
|
/* Big-endian values are found at the right end of the bytes
|
transferred. */
|
transferred. */
|
size_t padding = (bytes_transferred - register_size (gdbarch, regno));
|
size_t padding = (bytes_transferred - register_size (gdbarch, regno));
|
regcache_raw_supply (regcache, regno, buf + padding);
|
regcache_raw_supply (regcache, regno, buf + padding);
|
}
|
}
|
else
|
else
|
internal_error (__FILE__, __LINE__,
|
internal_error (__FILE__, __LINE__,
|
_("fetch_register: unexpected byte order: %d"),
|
_("fetch_register: unexpected byte order: %d"),
|
gdbarch_byte_order (gdbarch));
|
gdbarch_byte_order (gdbarch));
|
}
|
}
|
|
|
static void
|
static void
|
supply_vrregset (struct regcache *regcache, gdb_vrregset_t *vrregsetp)
|
supply_vrregset (struct regcache *regcache, gdb_vrregset_t *vrregsetp)
|
{
|
{
|
int i;
|
int i;
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
int num_of_vrregs = tdep->ppc_vrsave_regnum - tdep->ppc_vr0_regnum + 1;
|
int num_of_vrregs = tdep->ppc_vrsave_regnum - tdep->ppc_vr0_regnum + 1;
|
int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
|
int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
|
int offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
int offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
|
|
for (i = 0; i < num_of_vrregs; i++)
|
for (i = 0; i < num_of_vrregs; i++)
|
{
|
{
|
/* The last 2 registers of this set are only 32 bit long, not
|
/* The last 2 registers of this set are only 32 bit long, not
|
128. However an offset is necessary only for VSCR because it
|
128. However an offset is necessary only for VSCR because it
|
occupies a whole vector, while VRSAVE occupies a full 4 bytes
|
occupies a whole vector, while VRSAVE occupies a full 4 bytes
|
slot. */
|
slot. */
|
if (i == (num_of_vrregs - 2))
|
if (i == (num_of_vrregs - 2))
|
regcache_raw_supply (regcache, tdep->ppc_vr0_regnum + i,
|
regcache_raw_supply (regcache, tdep->ppc_vr0_regnum + i,
|
*vrregsetp + i * vrregsize + offset);
|
*vrregsetp + i * vrregsize + offset);
|
else
|
else
|
regcache_raw_supply (regcache, tdep->ppc_vr0_regnum + i,
|
regcache_raw_supply (regcache, tdep->ppc_vr0_regnum + i,
|
*vrregsetp + i * vrregsize);
|
*vrregsetp + i * vrregsize);
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
fetch_altivec_registers (struct regcache *regcache, int tid)
|
fetch_altivec_registers (struct regcache *regcache, int tid)
|
{
|
{
|
int ret;
|
int ret;
|
gdb_vrregset_t regs;
|
gdb_vrregset_t regs;
|
|
|
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
|
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
|
if (ret < 0)
|
if (ret < 0)
|
{
|
{
|
if (errno == EIO)
|
if (errno == EIO)
|
{
|
{
|
have_ptrace_getvrregs = 0;
|
have_ptrace_getvrregs = 0;
|
return;
|
return;
|
}
|
}
|
perror_with_name (_("Unable to fetch AltiVec registers"));
|
perror_with_name (_("Unable to fetch AltiVec registers"));
|
}
|
}
|
supply_vrregset (regcache, ®s);
|
supply_vrregset (regcache, ®s);
|
}
|
}
|
|
|
static void
|
static void
|
fetch_ppc_registers (struct regcache *regcache, int tid)
|
fetch_ppc_registers (struct regcache *regcache, int tid)
|
{
|
{
|
int i;
|
int i;
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
for (i = 0; i < ppc_num_gprs; i++)
|
for (i = 0; i < ppc_num_gprs; i++)
|
fetch_register (regcache, tid, tdep->ppc_gp0_regnum + i);
|
fetch_register (regcache, tid, tdep->ppc_gp0_regnum + i);
|
if (tdep->ppc_fp0_regnum >= 0)
|
if (tdep->ppc_fp0_regnum >= 0)
|
for (i = 0; i < ppc_num_fprs; i++)
|
for (i = 0; i < ppc_num_fprs; i++)
|
fetch_register (regcache, tid, tdep->ppc_fp0_regnum + i);
|
fetch_register (regcache, tid, tdep->ppc_fp0_regnum + i);
|
fetch_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
|
fetch_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
|
if (tdep->ppc_ps_regnum != -1)
|
if (tdep->ppc_ps_regnum != -1)
|
fetch_register (regcache, tid, tdep->ppc_ps_regnum);
|
fetch_register (regcache, tid, tdep->ppc_ps_regnum);
|
if (tdep->ppc_cr_regnum != -1)
|
if (tdep->ppc_cr_regnum != -1)
|
fetch_register (regcache, tid, tdep->ppc_cr_regnum);
|
fetch_register (regcache, tid, tdep->ppc_cr_regnum);
|
if (tdep->ppc_lr_regnum != -1)
|
if (tdep->ppc_lr_regnum != -1)
|
fetch_register (regcache, tid, tdep->ppc_lr_regnum);
|
fetch_register (regcache, tid, tdep->ppc_lr_regnum);
|
if (tdep->ppc_ctr_regnum != -1)
|
if (tdep->ppc_ctr_regnum != -1)
|
fetch_register (regcache, tid, tdep->ppc_ctr_regnum);
|
fetch_register (regcache, tid, tdep->ppc_ctr_regnum);
|
if (tdep->ppc_xer_regnum != -1)
|
if (tdep->ppc_xer_regnum != -1)
|
fetch_register (regcache, tid, tdep->ppc_xer_regnum);
|
fetch_register (regcache, tid, tdep->ppc_xer_regnum);
|
if (tdep->ppc_mq_regnum != -1)
|
if (tdep->ppc_mq_regnum != -1)
|
fetch_register (regcache, tid, tdep->ppc_mq_regnum);
|
fetch_register (regcache, tid, tdep->ppc_mq_regnum);
|
if (tdep->ppc_fpscr_regnum != -1)
|
if (tdep->ppc_fpscr_regnum != -1)
|
fetch_register (regcache, tid, tdep->ppc_fpscr_regnum);
|
fetch_register (regcache, tid, tdep->ppc_fpscr_regnum);
|
if (have_ptrace_getvrregs)
|
if (have_ptrace_getvrregs)
|
if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1)
|
if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1)
|
fetch_altivec_registers (regcache, tid);
|
fetch_altivec_registers (regcache, tid);
|
if (tdep->ppc_ev0_upper_regnum >= 0)
|
if (tdep->ppc_ev0_upper_regnum >= 0)
|
fetch_spe_register (regcache, tid, -1);
|
fetch_spe_register (regcache, tid, -1);
|
}
|
}
|
|
|
/* Fetch registers from the child process. Fetch all registers if
|
/* Fetch registers from the child process. Fetch all registers if
|
regno == -1, otherwise fetch all general registers or all floating
|
regno == -1, otherwise fetch all general registers or all floating
|
point registers depending upon the value of regno. */
|
point registers depending upon the value of regno. */
|
static void
|
static void
|
ppc_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
|
ppc_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
|
{
|
{
|
/* Overload thread id onto process id */
|
/* Overload thread id onto process id */
|
int tid = TIDGET (inferior_ptid);
|
int tid = TIDGET (inferior_ptid);
|
|
|
/* No thread id, just use process id */
|
/* No thread id, just use process id */
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (inferior_ptid);
|
tid = PIDGET (inferior_ptid);
|
|
|
if (regno == -1)
|
if (regno == -1)
|
fetch_ppc_registers (regcache, tid);
|
fetch_ppc_registers (regcache, tid);
|
else
|
else
|
fetch_register (regcache, tid, regno);
|
fetch_register (regcache, tid, regno);
|
}
|
}
|
|
|
/* Store one register. */
|
/* Store one register. */
|
static void
|
static void
|
store_altivec_register (const struct regcache *regcache, int tid, int regno)
|
store_altivec_register (const struct regcache *regcache, int tid, int regno)
|
{
|
{
|
int ret;
|
int ret;
|
int offset = 0;
|
int offset = 0;
|
gdb_vrregset_t regs;
|
gdb_vrregset_t regs;
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
|
int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
|
|
|
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
|
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
|
if (ret < 0)
|
if (ret < 0)
|
{
|
{
|
if (errno == EIO)
|
if (errno == EIO)
|
{
|
{
|
have_ptrace_getvrregs = 0;
|
have_ptrace_getvrregs = 0;
|
return;
|
return;
|
}
|
}
|
perror_with_name (_("Unable to fetch AltiVec register"));
|
perror_with_name (_("Unable to fetch AltiVec register"));
|
}
|
}
|
|
|
/* VSCR is fetched as a 16 bytes quantity, but it is really 4 bytes
|
/* VSCR is fetched as a 16 bytes quantity, but it is really 4 bytes
|
long on the hardware. */
|
long on the hardware. */
|
if (regno == (tdep->ppc_vrsave_regnum - 1))
|
if (regno == (tdep->ppc_vrsave_regnum - 1))
|
offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
|
|
regcache_raw_collect (regcache, regno,
|
regcache_raw_collect (regcache, regno,
|
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
|
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
|
|
|
ret = ptrace (PTRACE_SETVRREGS, tid, 0, ®s);
|
ret = ptrace (PTRACE_SETVRREGS, tid, 0, ®s);
|
if (ret < 0)
|
if (ret < 0)
|
perror_with_name (_("Unable to store AltiVec register"));
|
perror_with_name (_("Unable to store AltiVec register"));
|
}
|
}
|
|
|
/* Assuming TID referrs to an SPE process, set the top halves of TID's
|
/* Assuming TID referrs to an SPE process, set the top halves of TID's
|
general-purpose registers and its SPE-specific registers to the
|
general-purpose registers and its SPE-specific registers to the
|
values in EVRREGSET. If we don't support PTRACE_SETEVRREGS, do
|
values in EVRREGSET. If we don't support PTRACE_SETEVRREGS, do
|
nothing.
|
nothing.
|
|
|
All the logic to deal with whether or not the PTRACE_GETEVRREGS and
|
All the logic to deal with whether or not the PTRACE_GETEVRREGS and
|
PTRACE_SETEVRREGS requests are supported is isolated here, and in
|
PTRACE_SETEVRREGS requests are supported is isolated here, and in
|
get_spe_registers. */
|
get_spe_registers. */
|
static void
|
static void
|
set_spe_registers (int tid, struct gdb_evrregset_t *evrregset)
|
set_spe_registers (int tid, struct gdb_evrregset_t *evrregset)
|
{
|
{
|
if (have_ptrace_getsetevrregs)
|
if (have_ptrace_getsetevrregs)
|
{
|
{
|
if (ptrace (PTRACE_SETEVRREGS, tid, 0, evrregset) >= 0)
|
if (ptrace (PTRACE_SETEVRREGS, tid, 0, evrregset) >= 0)
|
return;
|
return;
|
else
|
else
|
{
|
{
|
/* EIO means that the PTRACE_SETEVRREGS request isn't
|
/* EIO means that the PTRACE_SETEVRREGS request isn't
|
supported; we fail silently, and don't try the call
|
supported; we fail silently, and don't try the call
|
again. */
|
again. */
|
if (errno == EIO)
|
if (errno == EIO)
|
have_ptrace_getsetevrregs = 0;
|
have_ptrace_getsetevrregs = 0;
|
else
|
else
|
/* Anything else needs to be reported. */
|
/* Anything else needs to be reported. */
|
perror_with_name (_("Unable to set SPE registers"));
|
perror_with_name (_("Unable to set SPE registers"));
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Write GDB's value for the SPE-specific raw register REGNO to TID.
|
/* Write GDB's value for the SPE-specific raw register REGNO to TID.
|
If REGNO is -1, write the values of all the SPE-specific
|
If REGNO is -1, write the values of all the SPE-specific
|
registers. */
|
registers. */
|
static void
|
static void
|
store_spe_register (const struct regcache *regcache, int tid, int regno)
|
store_spe_register (const struct regcache *regcache, int tid, int regno)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdb_evrregset_t evrregs;
|
struct gdb_evrregset_t evrregs;
|
|
|
gdb_assert (sizeof (evrregs.evr[0])
|
gdb_assert (sizeof (evrregs.evr[0])
|
== register_size (gdbarch, tdep->ppc_ev0_upper_regnum));
|
== register_size (gdbarch, tdep->ppc_ev0_upper_regnum));
|
gdb_assert (sizeof (evrregs.acc)
|
gdb_assert (sizeof (evrregs.acc)
|
== register_size (gdbarch, tdep->ppc_acc_regnum));
|
== register_size (gdbarch, tdep->ppc_acc_regnum));
|
gdb_assert (sizeof (evrregs.spefscr)
|
gdb_assert (sizeof (evrregs.spefscr)
|
== register_size (gdbarch, tdep->ppc_spefscr_regnum));
|
== register_size (gdbarch, tdep->ppc_spefscr_regnum));
|
|
|
if (regno == -1)
|
if (regno == -1)
|
/* Since we're going to write out every register, the code below
|
/* Since we're going to write out every register, the code below
|
should store to every field of evrregs; if that doesn't happen,
|
should store to every field of evrregs; if that doesn't happen,
|
make it obvious by initializing it with suspicious values. */
|
make it obvious by initializing it with suspicious values. */
|
memset (&evrregs, 42, sizeof (evrregs));
|
memset (&evrregs, 42, sizeof (evrregs));
|
else
|
else
|
/* We can only read and write the entire EVR register set at a
|
/* We can only read and write the entire EVR register set at a
|
time, so to write just a single register, we do a
|
time, so to write just a single register, we do a
|
read-modify-write maneuver. */
|
read-modify-write maneuver. */
|
get_spe_registers (tid, &evrregs);
|
get_spe_registers (tid, &evrregs);
|
|
|
if (regno == -1)
|
if (regno == -1)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i = 0; i < ppc_num_gprs; i++)
|
for (i = 0; i < ppc_num_gprs; i++)
|
regcache_raw_collect (regcache,
|
regcache_raw_collect (regcache,
|
tdep->ppc_ev0_upper_regnum + i,
|
tdep->ppc_ev0_upper_regnum + i,
|
&evrregs.evr[i]);
|
&evrregs.evr[i]);
|
}
|
}
|
else if (tdep->ppc_ev0_upper_regnum <= regno
|
else if (tdep->ppc_ev0_upper_regnum <= regno
|
&& regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs)
|
&& regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs)
|
regcache_raw_collect (regcache, regno,
|
regcache_raw_collect (regcache, regno,
|
&evrregs.evr[regno - tdep->ppc_ev0_upper_regnum]);
|
&evrregs.evr[regno - tdep->ppc_ev0_upper_regnum]);
|
|
|
if (regno == -1
|
if (regno == -1
|
|| regno == tdep->ppc_acc_regnum)
|
|| regno == tdep->ppc_acc_regnum)
|
regcache_raw_collect (regcache,
|
regcache_raw_collect (regcache,
|
tdep->ppc_acc_regnum,
|
tdep->ppc_acc_regnum,
|
&evrregs.acc);
|
&evrregs.acc);
|
|
|
if (regno == -1
|
if (regno == -1
|
|| regno == tdep->ppc_spefscr_regnum)
|
|| regno == tdep->ppc_spefscr_regnum)
|
regcache_raw_collect (regcache,
|
regcache_raw_collect (regcache,
|
tdep->ppc_spefscr_regnum,
|
tdep->ppc_spefscr_regnum,
|
&evrregs.spefscr);
|
&evrregs.spefscr);
|
|
|
/* Write back the modified register set. */
|
/* Write back the modified register set. */
|
set_spe_registers (tid, &evrregs);
|
set_spe_registers (tid, &evrregs);
|
}
|
}
|
|
|
static void
|
static void
|
store_register (const struct regcache *regcache, int tid, int regno)
|
store_register (const struct regcache *regcache, int tid, int regno)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
/* This isn't really an address. But ptrace thinks of it as one. */
|
/* This isn't really an address. But ptrace thinks of it as one. */
|
CORE_ADDR regaddr = ppc_register_u_addr (gdbarch, regno);
|
CORE_ADDR regaddr = ppc_register_u_addr (gdbarch, regno);
|
int i;
|
int i;
|
size_t bytes_to_transfer;
|
size_t bytes_to_transfer;
|
char buf[MAX_REGISTER_SIZE];
|
char buf[MAX_REGISTER_SIZE];
|
|
|
if (altivec_register_p (gdbarch, regno))
|
if (altivec_register_p (gdbarch, regno))
|
{
|
{
|
store_altivec_register (regcache, tid, regno);
|
store_altivec_register (regcache, tid, regno);
|
return;
|
return;
|
}
|
}
|
else if (spe_register_p (gdbarch, regno))
|
else if (spe_register_p (gdbarch, regno))
|
{
|
{
|
store_spe_register (regcache, tid, regno);
|
store_spe_register (regcache, tid, regno);
|
return;
|
return;
|
}
|
}
|
|
|
if (regaddr == -1)
|
if (regaddr == -1)
|
return;
|
return;
|
|
|
/* First collect the register. Keep in mind that the regcache's
|
/* First collect the register. Keep in mind that the regcache's
|
idea of the register's size may not be a multiple of sizeof
|
idea of the register's size may not be a multiple of sizeof
|
(long). */
|
(long). */
|
memset (buf, 0, sizeof buf);
|
memset (buf, 0, sizeof buf);
|
bytes_to_transfer = align_up (register_size (gdbarch, regno), sizeof (long));
|
bytes_to_transfer = align_up (register_size (gdbarch, regno), sizeof (long));
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
|
{
|
{
|
/* Little-endian values always sit at the left end of the buffer. */
|
/* Little-endian values always sit at the left end of the buffer. */
|
regcache_raw_collect (regcache, regno, buf);
|
regcache_raw_collect (regcache, regno, buf);
|
}
|
}
|
else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
|
else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
|
{
|
{
|
/* Big-endian values sit at the right end of the buffer. */
|
/* Big-endian values sit at the right end of the buffer. */
|
size_t padding = (bytes_to_transfer - register_size (gdbarch, regno));
|
size_t padding = (bytes_to_transfer - register_size (gdbarch, regno));
|
regcache_raw_collect (regcache, regno, buf + padding);
|
regcache_raw_collect (regcache, regno, buf + padding);
|
}
|
}
|
|
|
for (i = 0; i < bytes_to_transfer; i += sizeof (long))
|
for (i = 0; i < bytes_to_transfer; i += sizeof (long))
|
{
|
{
|
errno = 0;
|
errno = 0;
|
ptrace (PTRACE_POKEUSER, tid, (PTRACE_TYPE_ARG3) regaddr,
|
ptrace (PTRACE_POKEUSER, tid, (PTRACE_TYPE_ARG3) regaddr,
|
*(long *) &buf[i]);
|
*(long *) &buf[i]);
|
regaddr += sizeof (long);
|
regaddr += sizeof (long);
|
|
|
if (errno == EIO
|
if (errno == EIO
|
&& regno == tdep->ppc_fpscr_regnum)
|
&& regno == tdep->ppc_fpscr_regnum)
|
{
|
{
|
/* Some older kernel versions don't allow fpscr to be written. */
|
/* Some older kernel versions don't allow fpscr to be written. */
|
continue;
|
continue;
|
}
|
}
|
|
|
if (errno != 0)
|
if (errno != 0)
|
{
|
{
|
char message[128];
|
char message[128];
|
sprintf (message, "writing register %s (#%d)",
|
sprintf (message, "writing register %s (#%d)",
|
gdbarch_register_name (gdbarch, regno), regno);
|
gdbarch_register_name (gdbarch, regno), regno);
|
perror_with_name (message);
|
perror_with_name (message);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
fill_vrregset (const struct regcache *regcache, gdb_vrregset_t *vrregsetp)
|
fill_vrregset (const struct regcache *regcache, gdb_vrregset_t *vrregsetp)
|
{
|
{
|
int i;
|
int i;
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
int num_of_vrregs = tdep->ppc_vrsave_regnum - tdep->ppc_vr0_regnum + 1;
|
int num_of_vrregs = tdep->ppc_vrsave_regnum - tdep->ppc_vr0_regnum + 1;
|
int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
|
int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
|
int offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
int offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
|
|
|
for (i = 0; i < num_of_vrregs; i++)
|
for (i = 0; i < num_of_vrregs; i++)
|
{
|
{
|
/* The last 2 registers of this set are only 32 bit long, not
|
/* The last 2 registers of this set are only 32 bit long, not
|
128, but only VSCR is fetched as a 16 bytes quantity. */
|
128, but only VSCR is fetched as a 16 bytes quantity. */
|
if (i == (num_of_vrregs - 2))
|
if (i == (num_of_vrregs - 2))
|
regcache_raw_collect (regcache, tdep->ppc_vr0_regnum + i,
|
regcache_raw_collect (regcache, tdep->ppc_vr0_regnum + i,
|
*vrregsetp + i * vrregsize + offset);
|
*vrregsetp + i * vrregsize + offset);
|
else
|
else
|
regcache_raw_collect (regcache, tdep->ppc_vr0_regnum + i,
|
regcache_raw_collect (regcache, tdep->ppc_vr0_regnum + i,
|
*vrregsetp + i * vrregsize);
|
*vrregsetp + i * vrregsize);
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
store_altivec_registers (const struct regcache *regcache, int tid)
|
store_altivec_registers (const struct regcache *regcache, int tid)
|
{
|
{
|
int ret;
|
int ret;
|
gdb_vrregset_t regs;
|
gdb_vrregset_t regs;
|
|
|
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
|
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
|
if (ret < 0)
|
if (ret < 0)
|
{
|
{
|
if (errno == EIO)
|
if (errno == EIO)
|
{
|
{
|
have_ptrace_getvrregs = 0;
|
have_ptrace_getvrregs = 0;
|
return;
|
return;
|
}
|
}
|
perror_with_name (_("Couldn't get AltiVec registers"));
|
perror_with_name (_("Couldn't get AltiVec registers"));
|
}
|
}
|
|
|
fill_vrregset (regcache, ®s);
|
fill_vrregset (regcache, ®s);
|
|
|
if (ptrace (PTRACE_SETVRREGS, tid, 0, ®s) < 0)
|
if (ptrace (PTRACE_SETVRREGS, tid, 0, ®s) < 0)
|
perror_with_name (_("Couldn't write AltiVec registers"));
|
perror_with_name (_("Couldn't write AltiVec registers"));
|
}
|
}
|
|
|
static void
|
static void
|
store_ppc_registers (const struct regcache *regcache, int tid)
|
store_ppc_registers (const struct regcache *regcache, int tid)
|
{
|
{
|
int i;
|
int i;
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
for (i = 0; i < ppc_num_gprs; i++)
|
for (i = 0; i < ppc_num_gprs; i++)
|
store_register (regcache, tid, tdep->ppc_gp0_regnum + i);
|
store_register (regcache, tid, tdep->ppc_gp0_regnum + i);
|
if (tdep->ppc_fp0_regnum >= 0)
|
if (tdep->ppc_fp0_regnum >= 0)
|
for (i = 0; i < ppc_num_fprs; i++)
|
for (i = 0; i < ppc_num_fprs; i++)
|
store_register (regcache, tid, tdep->ppc_fp0_regnum + i);
|
store_register (regcache, tid, tdep->ppc_fp0_regnum + i);
|
store_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
|
store_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
|
if (tdep->ppc_ps_regnum != -1)
|
if (tdep->ppc_ps_regnum != -1)
|
store_register (regcache, tid, tdep->ppc_ps_regnum);
|
store_register (regcache, tid, tdep->ppc_ps_regnum);
|
if (tdep->ppc_cr_regnum != -1)
|
if (tdep->ppc_cr_regnum != -1)
|
store_register (regcache, tid, tdep->ppc_cr_regnum);
|
store_register (regcache, tid, tdep->ppc_cr_regnum);
|
if (tdep->ppc_lr_regnum != -1)
|
if (tdep->ppc_lr_regnum != -1)
|
store_register (regcache, tid, tdep->ppc_lr_regnum);
|
store_register (regcache, tid, tdep->ppc_lr_regnum);
|
if (tdep->ppc_ctr_regnum != -1)
|
if (tdep->ppc_ctr_regnum != -1)
|
store_register (regcache, tid, tdep->ppc_ctr_regnum);
|
store_register (regcache, tid, tdep->ppc_ctr_regnum);
|
if (tdep->ppc_xer_regnum != -1)
|
if (tdep->ppc_xer_regnum != -1)
|
store_register (regcache, tid, tdep->ppc_xer_regnum);
|
store_register (regcache, tid, tdep->ppc_xer_regnum);
|
if (tdep->ppc_mq_regnum != -1)
|
if (tdep->ppc_mq_regnum != -1)
|
store_register (regcache, tid, tdep->ppc_mq_regnum);
|
store_register (regcache, tid, tdep->ppc_mq_regnum);
|
if (tdep->ppc_fpscr_regnum != -1)
|
if (tdep->ppc_fpscr_regnum != -1)
|
store_register (regcache, tid, tdep->ppc_fpscr_regnum);
|
store_register (regcache, tid, tdep->ppc_fpscr_regnum);
|
if (have_ptrace_getvrregs)
|
if (have_ptrace_getvrregs)
|
if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1)
|
if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1)
|
store_altivec_registers (regcache, tid);
|
store_altivec_registers (regcache, tid);
|
if (tdep->ppc_ev0_upper_regnum >= 0)
|
if (tdep->ppc_ev0_upper_regnum >= 0)
|
store_spe_register (regcache, tid, -1);
|
store_spe_register (regcache, tid, -1);
|
}
|
}
|
|
|
static int
|
static int
|
ppc_linux_check_watch_resources (int type, int cnt, int ot)
|
ppc_linux_check_watch_resources (int type, int cnt, int ot)
|
{
|
{
|
int tid;
|
int tid;
|
ptid_t ptid = inferior_ptid;
|
ptid_t ptid = inferior_ptid;
|
|
|
/* DABR (data address breakpoint register) is optional for PPC variants.
|
/* DABR (data address breakpoint register) is optional for PPC variants.
|
Some variants have one DABR, others have none. So CNT can't be larger
|
Some variants have one DABR, others have none. So CNT can't be larger
|
than 1. */
|
than 1. */
|
if (cnt > 1)
|
if (cnt > 1)
|
return 0;
|
return 0;
|
|
|
/* We need to know whether ptrace supports PTRACE_SET_DEBUGREG and whether
|
/* We need to know whether ptrace supports PTRACE_SET_DEBUGREG and whether
|
the target has DABR. If either answer is no, the ptrace call will
|
the target has DABR. If either answer is no, the ptrace call will
|
return -1. Fail in that case. */
|
return -1. Fail in that case. */
|
tid = TIDGET (ptid);
|
tid = TIDGET (ptid);
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (ptid);
|
tid = PIDGET (ptid);
|
|
|
if (ptrace (PTRACE_SET_DEBUGREG, tid, 0, 0) == -1)
|
if (ptrace (PTRACE_SET_DEBUGREG, tid, 0, 0) == -1)
|
return 0;
|
return 0;
|
return 1;
|
return 1;
|
}
|
}
|
|
|
static int
|
static int
|
ppc_linux_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
|
ppc_linux_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
|
{
|
{
|
/* Handle sub-8-byte quantities. */
|
/* Handle sub-8-byte quantities. */
|
if (len <= 0)
|
if (len <= 0)
|
return 0;
|
return 0;
|
|
|
/* addr+len must fall in the 8 byte watchable region. */
|
/* addr+len must fall in the 8 byte watchable region. */
|
if ((addr + len) > (addr & ~7) + 8)
|
if ((addr + len) > (addr & ~7) + 8)
|
return 0;
|
return 0;
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* The cached DABR value, to install in new threads. */
|
/* The cached DABR value, to install in new threads. */
|
static long saved_dabr_value;
|
static long saved_dabr_value;
|
|
|
/* Set a watchpoint of type TYPE at address ADDR. */
|
/* Set a watchpoint of type TYPE at address ADDR. */
|
static int
|
static int
|
ppc_linux_insert_watchpoint (CORE_ADDR addr, int len, int rw)
|
ppc_linux_insert_watchpoint (CORE_ADDR addr, int len, int rw)
|
{
|
{
|
struct lwp_info *lp;
|
struct lwp_info *lp;
|
ptid_t ptid;
|
ptid_t ptid;
|
long dabr_value;
|
long dabr_value;
|
|
|
dabr_value = addr & ~7;
|
dabr_value = addr & ~7;
|
switch (rw)
|
switch (rw)
|
{
|
{
|
case hw_read:
|
case hw_read:
|
/* Set read and translate bits. */
|
/* Set read and translate bits. */
|
dabr_value |= 5;
|
dabr_value |= 5;
|
break;
|
break;
|
case hw_write:
|
case hw_write:
|
/* Set write and translate bits. */
|
/* Set write and translate bits. */
|
dabr_value |= 6;
|
dabr_value |= 6;
|
break;
|
break;
|
case hw_access:
|
case hw_access:
|
/* Set read, write and translate bits. */
|
/* Set read, write and translate bits. */
|
dabr_value |= 7;
|
dabr_value |= 7;
|
break;
|
break;
|
}
|
}
|
|
|
saved_dabr_value = dabr_value;
|
saved_dabr_value = dabr_value;
|
|
|
ALL_LWPS (lp, ptid)
|
ALL_LWPS (lp, ptid)
|
if (ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value) < 0)
|
if (ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value) < 0)
|
return -1;
|
return -1;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int
|
static int
|
ppc_linux_remove_watchpoint (CORE_ADDR addr, int len, int rw)
|
ppc_linux_remove_watchpoint (CORE_ADDR addr, int len, int rw)
|
{
|
{
|
struct lwp_info *lp;
|
struct lwp_info *lp;
|
ptid_t ptid;
|
ptid_t ptid;
|
long dabr_value = 0;
|
long dabr_value = 0;
|
|
|
saved_dabr_value = 0;
|
saved_dabr_value = 0;
|
ALL_LWPS (lp, ptid)
|
ALL_LWPS (lp, ptid)
|
if (ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value) < 0)
|
if (ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value) < 0)
|
return -1;
|
return -1;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static void
|
static void
|
ppc_linux_new_thread (ptid_t ptid)
|
ppc_linux_new_thread (ptid_t ptid)
|
{
|
{
|
ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value);
|
ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value);
|
}
|
}
|
|
|
static int
|
static int
|
ppc_linux_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
|
ppc_linux_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
|
{
|
{
|
struct siginfo *siginfo_p;
|
struct siginfo *siginfo_p;
|
|
|
siginfo_p = linux_nat_get_siginfo (inferior_ptid);
|
siginfo_p = linux_nat_get_siginfo (inferior_ptid);
|
|
|
if (siginfo_p->si_signo != SIGTRAP
|
if (siginfo_p->si_signo != SIGTRAP
|
|| (siginfo_p->si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */)
|
|| (siginfo_p->si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */)
|
return 0;
|
return 0;
|
|
|
*addr_p = (CORE_ADDR) (uintptr_t) siginfo_p->si_addr;
|
*addr_p = (CORE_ADDR) (uintptr_t) siginfo_p->si_addr;
|
return 1;
|
return 1;
|
}
|
}
|
|
|
static int
|
static int
|
ppc_linux_stopped_by_watchpoint (void)
|
ppc_linux_stopped_by_watchpoint (void)
|
{
|
{
|
CORE_ADDR addr;
|
CORE_ADDR addr;
|
return ppc_linux_stopped_data_address (¤t_target, &addr);
|
return ppc_linux_stopped_data_address (¤t_target, &addr);
|
}
|
}
|
|
|
static void
|
static void
|
ppc_linux_store_inferior_registers (struct regcache *regcache, int regno)
|
ppc_linux_store_inferior_registers (struct regcache *regcache, int regno)
|
{
|
{
|
/* Overload thread id onto process id */
|
/* Overload thread id onto process id */
|
int tid = TIDGET (inferior_ptid);
|
int tid = TIDGET (inferior_ptid);
|
|
|
/* No thread id, just use process id */
|
/* No thread id, just use process id */
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (inferior_ptid);
|
tid = PIDGET (inferior_ptid);
|
|
|
if (regno >= 0)
|
if (regno >= 0)
|
store_register (regcache, tid, regno);
|
store_register (regcache, tid, regno);
|
else
|
else
|
store_ppc_registers (regcache, tid);
|
store_ppc_registers (regcache, tid);
|
}
|
}
|
|
|
/* Functions for transferring registers between a gregset_t or fpregset_t
|
/* Functions for transferring registers between a gregset_t or fpregset_t
|
(see sys/ucontext.h) and gdb's regcache. The word size is that used
|
(see sys/ucontext.h) and gdb's regcache. The word size is that used
|
by the ptrace interface, not the current program's ABI. eg. If a
|
by the ptrace interface, not the current program's ABI. eg. If a
|
powerpc64-linux gdb is being used to debug a powerpc32-linux app, we
|
powerpc64-linux gdb is being used to debug a powerpc32-linux app, we
|
read or write 64-bit gregsets. This is to suit the host libthread_db. */
|
read or write 64-bit gregsets. This is to suit the host libthread_db. */
|
|
|
void
|
void
|
supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
|
supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
|
{
|
{
|
const struct regset *regset = ppc_linux_gregset (sizeof (long));
|
const struct regset *regset = ppc_linux_gregset (sizeof (long));
|
|
|
ppc_supply_gregset (regset, regcache, -1, gregsetp, sizeof (*gregsetp));
|
ppc_supply_gregset (regset, regcache, -1, gregsetp, sizeof (*gregsetp));
|
}
|
}
|
|
|
void
|
void
|
fill_gregset (const struct regcache *regcache,
|
fill_gregset (const struct regcache *regcache,
|
gdb_gregset_t *gregsetp, int regno)
|
gdb_gregset_t *gregsetp, int regno)
|
{
|
{
|
const struct regset *regset = ppc_linux_gregset (sizeof (long));
|
const struct regset *regset = ppc_linux_gregset (sizeof (long));
|
|
|
if (regno == -1)
|
if (regno == -1)
|
memset (gregsetp, 0, sizeof (*gregsetp));
|
memset (gregsetp, 0, sizeof (*gregsetp));
|
ppc_collect_gregset (regset, regcache, regno, gregsetp, sizeof (*gregsetp));
|
ppc_collect_gregset (regset, regcache, regno, gregsetp, sizeof (*gregsetp));
|
}
|
}
|
|
|
void
|
void
|
supply_fpregset (struct regcache *regcache, const gdb_fpregset_t * fpregsetp)
|
supply_fpregset (struct regcache *regcache, const gdb_fpregset_t * fpregsetp)
|
{
|
{
|
const struct regset *regset = ppc_linux_fpregset ();
|
const struct regset *regset = ppc_linux_fpregset ();
|
|
|
ppc_supply_fpregset (regset, regcache, -1,
|
ppc_supply_fpregset (regset, regcache, -1,
|
fpregsetp, sizeof (*fpregsetp));
|
fpregsetp, sizeof (*fpregsetp));
|
}
|
}
|
|
|
void
|
void
|
fill_fpregset (const struct regcache *regcache,
|
fill_fpregset (const struct regcache *regcache,
|
gdb_fpregset_t *fpregsetp, int regno)
|
gdb_fpregset_t *fpregsetp, int regno)
|
{
|
{
|
const struct regset *regset = ppc_linux_fpregset ();
|
const struct regset *regset = ppc_linux_fpregset ();
|
|
|
ppc_collect_fpregset (regset, regcache, regno,
|
ppc_collect_fpregset (regset, regcache, regno,
|
fpregsetp, sizeof (*fpregsetp));
|
fpregsetp, sizeof (*fpregsetp));
|
}
|
}
|
|
|
static const struct target_desc *
|
static const struct target_desc *
|
ppc_linux_read_description (struct target_ops *ops)
|
ppc_linux_read_description (struct target_ops *ops)
|
{
|
{
|
if (have_ptrace_getsetevrregs)
|
if (have_ptrace_getsetevrregs)
|
{
|
{
|
struct gdb_evrregset_t evrregset;
|
struct gdb_evrregset_t evrregset;
|
int tid = TIDGET (inferior_ptid);
|
int tid = TIDGET (inferior_ptid);
|
|
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (inferior_ptid);
|
tid = PIDGET (inferior_ptid);
|
|
|
if (ptrace (PTRACE_GETEVRREGS, tid, 0, &evrregset) >= 0)
|
if (ptrace (PTRACE_GETEVRREGS, tid, 0, &evrregset) >= 0)
|
return tdesc_powerpc_e500;
|
return tdesc_powerpc_e500;
|
else
|
else
|
{
|
{
|
/* EIO means that the PTRACE_GETEVRREGS request isn't supported. */
|
/* EIO means that the PTRACE_GETEVRREGS request isn't supported. */
|
if (errno == EIO)
|
if (errno == EIO)
|
return NULL;
|
return NULL;
|
else
|
else
|
/* Anything else needs to be reported. */
|
/* Anything else needs to be reported. */
|
perror_with_name (_("Unable to fetch SPE registers"));
|
perror_with_name (_("Unable to fetch SPE registers"));
|
}
|
}
|
}
|
}
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
void _initialize_ppc_linux_nat (void);
|
void _initialize_ppc_linux_nat (void);
|
|
|
void
|
void
|
_initialize_ppc_linux_nat (void)
|
_initialize_ppc_linux_nat (void)
|
{
|
{
|
struct target_ops *t;
|
struct target_ops *t;
|
|
|
/* Fill in the generic GNU/Linux methods. */
|
/* Fill in the generic GNU/Linux methods. */
|
t = linux_target ();
|
t = linux_target ();
|
|
|
/* Add our register access methods. */
|
/* Add our register access methods. */
|
t->to_fetch_registers = ppc_linux_fetch_inferior_registers;
|
t->to_fetch_registers = ppc_linux_fetch_inferior_registers;
|
t->to_store_registers = ppc_linux_store_inferior_registers;
|
t->to_store_registers = ppc_linux_store_inferior_registers;
|
|
|
/* Add our watchpoint methods. */
|
/* Add our watchpoint methods. */
|
t->to_can_use_hw_breakpoint = ppc_linux_check_watch_resources;
|
t->to_can_use_hw_breakpoint = ppc_linux_check_watch_resources;
|
t->to_region_ok_for_hw_watchpoint = ppc_linux_region_ok_for_hw_watchpoint;
|
t->to_region_ok_for_hw_watchpoint = ppc_linux_region_ok_for_hw_watchpoint;
|
t->to_insert_watchpoint = ppc_linux_insert_watchpoint;
|
t->to_insert_watchpoint = ppc_linux_insert_watchpoint;
|
t->to_remove_watchpoint = ppc_linux_remove_watchpoint;
|
t->to_remove_watchpoint = ppc_linux_remove_watchpoint;
|
t->to_stopped_by_watchpoint = ppc_linux_stopped_by_watchpoint;
|
t->to_stopped_by_watchpoint = ppc_linux_stopped_by_watchpoint;
|
t->to_stopped_data_address = ppc_linux_stopped_data_address;
|
t->to_stopped_data_address = ppc_linux_stopped_data_address;
|
|
|
t->to_read_description = ppc_linux_read_description;
|
t->to_read_description = ppc_linux_read_description;
|
|
|
/* Register the target. */
|
/* Register the target. */
|
linux_nat_add_target (t);
|
linux_nat_add_target (t);
|
linux_nat_set_new_thread (t, ppc_linux_new_thread);
|
linux_nat_set_new_thread (t, ppc_linux_new_thread);
|
}
|
}
|
|
|
