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56be38147c
(struct target_ops): Add REGCACHE parameter to to_fetch_registers and to_store_registers target operations. (target_fetch_registers, target_store_registers): Update. * regcache.c (regcache_raw_read): Replace register_cached by regcache_valid_p. Pass regcache to target_fetch_registers. (regcache_raw_write): Pass regcache to target_store_registers. * arm-linux-nat.c (store_fpregister, store_fpregs, store_register, store_regs, store_wmmx_regs): Replace register_cached by regcache_valid_p. * bsd-kvm.c (bsd_kvm_open, bsd_kvm_proc_cmd): Pass current_regcache to target_fetch_registers calls. * corelow.c (core_open): Likewise. * linux-nat.c (linux_nat_corefile_thread_callback): Likewise. * proc-service.c (ps_lgetregs, ps_lsetregs, ps_lgetfpregs, ps_lsetfpregs): Likewise. * sol-thread.c (ps_lgetregs, ps_lsetregs, ps_lgetfpregs, ps_lsetfpregs): Likewise. * win32-nat.c (win32_resume): Likewise. * ia64-tdep.c (ia64_store_return_value): Pass current_regcache to target_store_registers call. * rs6000-tdep.c (rs6000_push_dummy_call): Likewise. * inferior.h (store_inferior_registers): Update prototype. (fetch_inferior_registers): Likewise. * gnu-nat.c (gnu_store_registers, gnu_fetch_registers): Likewise. * mips-linux-nat.c (super_fetch_registers, super_store_registers): Update function pointer signatures. * aix-thread.c (aix_thread_fetch_registers): Add REGCACHE parameter, use it instead of current_regcache, update calls. (aix_thread_store_registers): Likewise. * alphabsd-nat.c (alphabsd_fetch_inferior_registers): Likewise. (alphabsd_store_inferior_registers): Likewise. * amd64bsd-nat.c (amd64bsd_fetch_inferior_registers): Likewise. (amd64bsd_store_inferior_registers): Likewise. * amd64-linux-nat.c (amd64_linux_fetch_inferior_registers): Likewise. (amd64_linux_store_inferior_registers): Likewise. * arm-linux-nat.c (fetch_fpregister, fetch_fpregs, store_fpregister, store_fpregs, fetch_register, fetch_regs, store_register, store_regs, fetch_wmmx_regs, store_wmmx_regs): Likewise. (arm_linux_fetch_inferior_registers): Likewise. (arm_linux_store_inferior_registers): Likewise. * armnbsd-nat.c (fetch_register, fetch_regs, fetch_fp_register, fetch_fp_regs, armnbsd_fetch_registers): Likewise. (store_register, store_regs, store_fp_register, store_fp_regs, armnbsd_store_registers): Likewise. * bsd-kvm.c (bsd_kvm_fetch_pcb, bsd_kvm_fetch_registers): Likewise. * bsd-uthread.c (bsd_uthread_fetch_registers): Likewise. (bsd_uthread_store_registers): Likewise. * corelow.c (get_core_registers): Likewise. * go32-nat.c (fetch_register, go32_fetch_registers, store_register, go32_store_registers): Likewise. * hppabsd-nat.c (hppabsd_fetch_registers): Likewise. (hppabsd_store_registers): Likewise. * hppa-hpux-nat.c (hppa_hpux_fetch_register): Likewise. (hppa_hpux_fetch_inferior_registers): Likewise. (hppa_hpux_store_register): Likewise. (hppa_hpux_store_inferior_registers): Likewise. * hppa-linux-nat.c (fetch_register, store_register): Likewise. (hppa_linux_fetch_inferior_registers): Likewise. (hppa_linux_store_inferior_registers): Likewise. * hpux-thread.c (hpux_thread_fetch_registers): Likewise. (hpux_thread_store_registers): Likewise. * i386bsd-nat.c (i386bsd_fetch_inferior_registers): Likewise. (i386bsd_store_inferior_registers): Likewise. * i386gnu-nat.c (fetch_fpregs, gnu_fetch_registers, store_fpregs, gnu_store_registers): Likewise. * i386-linux-nat.c (fetch_register, store_register, fetch_regs, store_regs, fetch_fpregs, store_fpregs, fetch_fpxregs, store_fpxregs): Likewise. (i386_linux_fetch_inferior_registers): Likewise. (i386_linux_store_inferior_registers): Likewise. * ia64-linux-nat.c (ia64_linux_fetch_register): Likewise. (ia64_linux_fetch_registers): Likewise. (ia64_linux_store_register): Likewise. (ia64_linux_store_registers): Likewise. * inf-child.c (inf_child_fetch_inferior_registers): Likewise. (inf_child_store_inferior_registers): Likewise. * inf-ptrace.c (inf_ptrace_fetch_register): Likewise. (inf_ptrace_fetch_registers): Likewise. (inf_ptrace_store_register): Likewise. (inf_ptrace_store_registers): Likewise. * infptrace.c (fetch_register, store_register): Likewise. (fetch_inferior_registers, store_inferior_registers): Likewise. * m32r-linux-nat.c (fetch_regs, store_regs): Likewise. (m32r_linux_fetch_inferior_registers): Likewise. (m32r_linux_store_inferior_registers): Likewise. * m68kbsd-nat.c (m68kbsd_fetch_inferior_registers): Likewise. (m68kbsd_store_inferior_registers): Likewise. * m68klinux-nat.c (fetch_register, old_fetch_inferior_registers, store_register, old_store_inferior_registers, fetch_regs, store_regs, fetch_fpregs, store_fpregs): Likewise. (m68k_linux_fetch_inferior_registers): Likewise. (m68k_linux_store_inferior_registers): Likewise. * m88kbsd-nat.c (m88kbsd_fetch_inferior_registers): Likewise. (m88kbsd_store_inferior_registers): Likewise. * mips64obsd-nat.c (mips64obsd_fetch_inferior_registers): Likewise. (mips64obsd_store_inferior_registers): Likewise. * mips-linux-nat.c (mips64_linux_regsets_fetch_registers): Likewise. (mips64_linux_regsets_store_registers): Likewise. (mips64_linux_fetch_registers): Likewise. (mips64_linux_store_registers): Likewise. * mipsnbsd-nat.c (mipsnbsd_fetch_inferior_registers): Likewise. (mipsnbsd_store_inferior_registers): Likewise. * monitor.c (monitor_fetch_register, monitor_store_register): Likewise. (monitor_fetch_registers, monitor_store_registers): Likewise. * nto-procfs.c (procfs_fetch_registers): Likewise. (procfs_store_registers): Likewise. * ppc-linux-nat.c (fetch_altivec_register, fetch_spe_register, fetch_register, supply_vrregset, fetch_altivec_registers, fetch_ppc_registers, ppc_linux_fetch_inferior_registers): Likewise. (store_altivec_register, store_spe_register, store_register, fill_vrregset, store_altivec_registers, store_ppc_registers, ppc_linux_store_inferior_registers): Likewise. * ppcnbsd-nat.c (ppcnbsd_fetch_inferior_registers): Likewise. (ppcnbsd_store_inferior_registers): Likewise. * ppcobsd-nat.c (ppcobsd_fetch_registers): Likewise. (ppcobsd_store_registers): Likewise. * procfs.c (procfs_fetch_registers, procfs_store_registers): Likewise. * remote.c (fetch_register_using_p, process_g_packet, fetch_registers_using_g, remote_fetch_registers): Likewise. (store_register_using_P, store_registers_using_G, remote_store_registers): Likewise. * remote-m32r-sdi.c (m32r_fetch_registers, m32r_fetch_register, m32r_store_register, m32r_store_register): Likewise. * remote-mips.c (mips_fetch_registers, mips_store_registers): Likewise. * remote-sim.c (gdbsim_fetch_register): Likewise. (gdbsim_store_register): Likewise. * rs6000-nat.c (fetch_register, store_register): Likewise. (rs6000_fetch_inferior_registers): Likewise. (rs6000_store_inferior_registers): Likewise. * s390-nat.c (fetch_regs, store_regs): Likewise. (fetch_fpregs, store_fpregs): Likewise. (s390_linux_fetch_inferior_registers): Likewise. (s390_linux_store_inferior_registers): Likewise. * shnbsd-nat.c (shnbsd_fetch_inferior_registers): Likewise. (shnbsd_store_inferior_registers): Likewise. * sol-thread.c (sol_thread_fetch_registers): Likewise. (sol_thread_store_registers): Likewise. * sparc-nat.c (fetch_inferior_registers): Likewise. (store_inferior_registers): Likewise. * spu-linux-nat.c (spu_fetch_inferior_registers): Likewise. (spu_store_inferior_registers): Likewise. * target.c (debug_print_register): Likewise. (debug_to_fetch_registers, debug_to_store_registers): Likewise. * vaxbsd-nat.c (vaxbsd_fetch_inferior_registers): Likewise. (vaxbsd_store_inferior_registers): Likewise. * win32-nat.c (do_win32_fetch_inferior_registers): Likewise. (win32_fetch_inferior_registers): Likewise. (win32_store_inferior_registers): Likewise.
227 lines
7.3 KiB
C
227 lines
7.3 KiB
C
/* Native-dependent code for OpenBSD/powerpc.
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Copyright (C) 2004, 2005, 2006, 2007 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., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "inferior.h"
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#include "regcache.h"
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#include "gdb_assert.h"
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#include <stddef.h>
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/signal.h>
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#include <machine/frame.h>
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#include <machine/pcb.h>
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#include <machine/reg.h>
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#include "ppc-tdep.h"
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#include "ppcobsd-tdep.h"
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#include "inf-ptrace.h"
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#include "bsd-kvm.h"
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/* OpenBSD/powerpc didn't have PT_GETFPREGS/PT_SETFPREGS until release
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4.0. On older releases the floating-point registers are handled by
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PT_GETREGS/PT_SETREGS, but fpscr wasn't available.. */
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#ifdef PT_GETFPREGS
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/* Returns true if PT_GETFPREGS fetches this register. */
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static int
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getfpregs_supplies (int regnum)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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/* FIXME: jimb/2004-05-05: Some PPC variants don't have floating
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point registers. Traditionally, GDB's register set has still
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listed the floating point registers for such machines, so this
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code is harmless. However, the new E500 port actually omits the
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floating point registers entirely from the register set --- they
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don't even have register numbers assigned to them.
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It's not clear to me how best to update this code, so this assert
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will alert the first person to encounter the NetBSD/E500
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combination to the problem. */
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gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
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return ((regnum >= tdep->ppc_fp0_regnum
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&& regnum < tdep->ppc_fp0_regnum + ppc_num_fprs)
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|| regnum == tdep->ppc_fpscr_regnum);
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}
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#endif /* PT_GETFPREGS */
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/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
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for all registers. */
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static void
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ppcobsd_fetch_registers (struct regcache *regcache, int regnum)
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{
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struct reg regs;
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if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) ®s, 0) == -1)
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perror_with_name (_("Couldn't get registers"));
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ppc_supply_gregset (&ppcobsd_gregset, regcache, -1,
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®s, sizeof regs);
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#ifndef PT_GETFPREGS
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ppc_supply_fpregset (&ppcobsd_gregset, regcache, -1,
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®s, sizeof regs);
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#endif
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#ifdef PT_GETFPREGS
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if (regnum == -1 || getfpregs_supplies (regnum))
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{
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struct fpreg fpregs;
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if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
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perror_with_name (_("Couldn't get floating point status"));
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ppc_supply_fpregset (&ppcobsd_fpregset, regcache, -1,
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&fpregs, sizeof fpregs);
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}
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#endif
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}
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/* Store register REGNUM back into the inferior. If REGNUM is -1, do
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this for all registers. */
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static void
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ppcobsd_store_registers (struct regcache *regcache, int regnum)
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{
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struct reg regs;
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if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) ®s, 0) == -1)
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perror_with_name (_("Couldn't get registers"));
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ppc_collect_gregset (&ppcobsd_gregset, regcache,
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regnum, ®s, sizeof regs);
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#ifndef PT_GETFPREGS
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ppc_collect_fpregset (&ppcobsd_gregset, regcache,
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regnum, ®s, sizeof regs);
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#endif
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if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) ®s, 0) == -1)
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perror_with_name (_("Couldn't write registers"));
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#ifdef PT_GETFPREGS
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if (regnum == -1 || getfpregs_supplies (regnum))
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{
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struct fpreg fpregs;
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if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
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perror_with_name (_("Couldn't get floating point status"));
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ppc_collect_fpregset (&ppcobsd_fpregset, regcache,
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regnum, &fpregs, sizeof fpregs);
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if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
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perror_with_name (_("Couldn't write floating point status"));
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}
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#endif
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}
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static int
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ppcobsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
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struct switchframe sf;
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struct callframe cf;
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int i, regnum;
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/* The following is true for OpenBSD 3.7:
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The pcb contains %r1 (the stack pointer) at the point of the
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context switch in cpu_switch(). At that point we have a stack
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frame as described by `struct switchframe', and below that a call
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frame as described by `struct callframe'. From this information
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we reconstruct the register state as it would look when we are in
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cpu_switch(). */
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/* The stack pointer shouldn't be zero. */
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if (pcb->pcb_sp == 0)
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return 0;
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read_memory (pcb->pcb_sp, (gdb_byte *)&sf, sizeof sf);
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regcache_raw_supply (regcache, SP_REGNUM, &sf.sp);
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regcache_raw_supply (regcache, tdep->ppc_cr_regnum, &sf.cr);
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regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 2, &sf.fixreg2);
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for (i = 0, regnum = tdep->ppc_gp0_regnum + 13; i < 19; i++, regnum++)
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regcache_raw_supply (regcache, regnum, &sf.fixreg[i]);
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read_memory (sf.sp, (gdb_byte *)&cf, sizeof cf);
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regcache_raw_supply (regcache, PC_REGNUM, &cf.lr);
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regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 30, &cf.r30);
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regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 31, &cf.r31);
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return 1;
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_ppcobsd_nat (void);
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void
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_initialize_ppcobsd_nat (void)
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{
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struct target_ops *t;
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/* Add in local overrides. */
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t = inf_ptrace_target ();
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t->to_fetch_registers = ppcobsd_fetch_registers;
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t->to_store_registers = ppcobsd_store_registers;
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add_target (t);
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/* General-purpose registers. */
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ppcobsd_reg_offsets.r0_offset = offsetof (struct reg, gpr);
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ppcobsd_reg_offsets.pc_offset = offsetof (struct reg, pc);
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ppcobsd_reg_offsets.ps_offset = offsetof (struct reg, ps);
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ppcobsd_reg_offsets.cr_offset = offsetof (struct reg, cnd);
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ppcobsd_reg_offsets.lr_offset = offsetof (struct reg, lr);
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ppcobsd_reg_offsets.ctr_offset = offsetof (struct reg, cnt);
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ppcobsd_reg_offsets.xer_offset = offsetof (struct reg, xer);
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ppcobsd_reg_offsets.mq_offset = offsetof (struct reg, mq);
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/* Floating-point registers. */
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ppcobsd_reg_offsets.f0_offset = offsetof (struct reg, fpr);
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ppcobsd_reg_offsets.fpscr_offset = -1;
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#ifdef PT_GETFPREGS
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ppcobsd_fpreg_offsets.f0_offset = offsetof (struct fpreg, fpr);
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ppcobsd_fpreg_offsets.fpscr_offset = offsetof (struct fpreg, fpscr);
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#endif
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/* AltiVec registers. */
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ppcobsd_reg_offsets.vr0_offset = offsetof (struct vreg, vreg);
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ppcobsd_reg_offsets.vscr_offset = offsetof (struct vreg, vscr);
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ppcobsd_reg_offsets.vrsave_offset = offsetof (struct vreg, vrsave);
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/* Support debugging kernel virtual memory images. */
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bsd_kvm_add_target (ppcobsd_supply_pcb);
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}
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