mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
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.
409 lines
11 KiB
C
409 lines
11 KiB
C
/* Native-dependent code for modern i386 BSD's.
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Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007
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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 "inferior.h"
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#include "regcache.h"
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#include "gdb_assert.h"
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#include <signal.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 <machine/reg.h>
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#include <machine/frame.h>
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#include "i386-tdep.h"
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#include "i387-tdep.h"
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#include "i386bsd-nat.h"
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#include "inf-ptrace.h"
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/* In older BSD versions we cannot get at some of the segment
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registers. FreeBSD for example didn't support the %fs and %gs
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registers until the 3.0 release. We have autoconf checks for their
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presence, and deal gracefully with their absence. */
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/* Offset in `struct reg' where MEMBER is stored. */
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#define REG_OFFSET(member) offsetof (struct reg, member)
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/* At i386bsd_reg_offset[REGNUM] you'll find the offset in `struct
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reg' where the GDB register REGNUM is stored. Unsupported
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registers are marked with `-1'. */
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static int i386bsd_r_reg_offset[] =
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{
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REG_OFFSET (r_eax),
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REG_OFFSET (r_ecx),
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REG_OFFSET (r_edx),
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REG_OFFSET (r_ebx),
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REG_OFFSET (r_esp),
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REG_OFFSET (r_ebp),
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REG_OFFSET (r_esi),
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REG_OFFSET (r_edi),
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REG_OFFSET (r_eip),
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REG_OFFSET (r_eflags),
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REG_OFFSET (r_cs),
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REG_OFFSET (r_ss),
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REG_OFFSET (r_ds),
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REG_OFFSET (r_es),
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#ifdef HAVE_STRUCT_REG_R_FS
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REG_OFFSET (r_fs),
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#else
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-1,
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#endif
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#ifdef HAVE_STRUCT_REG_R_GS
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REG_OFFSET (r_gs)
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#else
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-1
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#endif
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};
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/* Macro to determine if a register is fetched with PT_GETREGS. */
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#define GETREGS_SUPPLIES(regnum) \
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((0 <= (regnum) && (regnum) <= 15))
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#ifdef HAVE_PT_GETXMMREGS
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/* Set to 1 if the kernel supports PT_GETXMMREGS. Initialized to -1
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so that we try PT_GETXMMREGS the first time around. */
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static int have_ptrace_xmmregs = -1;
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#endif
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/* Supply the general-purpose registers in GREGS, to REGCACHE. */
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static void
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i386bsd_supply_gregset (struct regcache *regcache, const void *gregs)
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{
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const char *regs = gregs;
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int regnum;
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for (regnum = 0; regnum < ARRAY_SIZE (i386bsd_r_reg_offset); regnum++)
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{
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int offset = i386bsd_r_reg_offset[regnum];
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if (offset != -1)
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regcache_raw_supply (regcache, regnum, regs + offset);
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}
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}
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/* Collect register REGNUM from REGCACHE and store its contents in
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GREGS. If REGNUM is -1, collect and store all appropriate
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registers. */
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static void
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i386bsd_collect_gregset (const struct regcache *regcache,
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void *gregs, int regnum)
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{
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char *regs = gregs;
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int i;
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for (i = 0; i < ARRAY_SIZE (i386bsd_r_reg_offset); i++)
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{
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if (regnum == -1 || regnum == i)
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{
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int offset = i386bsd_r_reg_offset[i];
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if (offset != -1)
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regcache_raw_collect (regcache, i, regs + offset);
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}
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}
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}
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/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
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for all registers (including the floating point registers). */
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static void
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i386bsd_fetch_inferior_registers (struct regcache *regcache, int regnum)
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{
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if (regnum == -1 || GETREGS_SUPPLIES (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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i386bsd_supply_gregset (regcache, ®s);
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if (regnum != -1)
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return;
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}
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if (regnum == -1 || regnum >= I386_ST0_REGNUM)
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{
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struct fpreg fpregs;
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#ifdef HAVE_PT_GETXMMREGS
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char xmmregs[512];
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if (have_ptrace_xmmregs != 0
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&& ptrace(PT_GETXMMREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) xmmregs, 0) == 0)
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{
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have_ptrace_xmmregs = 1;
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i387_supply_fxsave (regcache, -1, xmmregs);
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}
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else
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{
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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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i387_supply_fsave (regcache, -1, &fpregs);
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}
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#else
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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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i387_supply_fsave (regcache, -1, &fpregs);
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#endif
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}
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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 (including the floating point registers). */
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static void
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i386bsd_store_inferior_registers (struct regcache *regcache, int regnum)
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{
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if (regnum == -1 || GETREGS_SUPPLIES (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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i386bsd_collect_gregset (regcache, ®s, regnum);
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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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if (regnum != -1)
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return;
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}
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if (regnum == -1 || regnum >= I386_ST0_REGNUM)
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{
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struct fpreg fpregs;
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#ifdef HAVE_PT_GETXMMREGS
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char xmmregs[512];
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if (have_ptrace_xmmregs != 0
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&& ptrace(PT_GETXMMREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) xmmregs, 0) == 0)
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{
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have_ptrace_xmmregs = 1;
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i387_collect_fxsave (regcache, regnum, xmmregs);
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if (ptrace (PT_SETXMMREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) xmmregs, 0) == -1)
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perror_with_name (_("Couldn't write XMM registers"));
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}
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else
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{
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have_ptrace_xmmregs = 0;
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#endif
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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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i387_collect_fsave (regcache, regnum, &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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#ifdef HAVE_PT_GETXMMREGS
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}
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#endif
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}
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}
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/* Create a prototype *BSD/i386 target. The client can override it
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with local methods. */
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struct target_ops *
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i386bsd_target (void)
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{
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struct target_ops *t;
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t = inf_ptrace_target ();
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t->to_fetch_registers = i386bsd_fetch_inferior_registers;
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t->to_store_registers = i386bsd_store_inferior_registers;
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return t;
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}
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/* Support for debug registers. */
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#ifdef HAVE_PT_GETDBREGS
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/* Not all versions of FreeBSD/i386 that support the debug registers
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have this macro. */
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#ifndef DBREG_DRX
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#define DBREG_DRX(d, x) ((&d->dr0)[x])
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#endif
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static void
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i386bsd_dr_set (int regnum, unsigned int value)
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{
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struct dbreg dbregs;
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if (ptrace (PT_GETDBREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
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perror_with_name (_("Couldn't get debug registers"));
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/* For some mysterious reason, some of the reserved bits in the
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debug control register get set. Mask these off, otherwise the
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ptrace call below will fail. */
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DBREG_DRX ((&dbregs), 7) &= ~(0x0000fc00);
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DBREG_DRX ((&dbregs), regnum) = value;
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if (ptrace (PT_SETDBREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
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perror_with_name (_("Couldn't write debug registers"));
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}
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void
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i386bsd_dr_set_control (unsigned long control)
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{
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i386bsd_dr_set (7, control);
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}
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void
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i386bsd_dr_set_addr (int regnum, CORE_ADDR addr)
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{
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gdb_assert (regnum >= 0 && regnum <= 4);
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i386bsd_dr_set (regnum, addr);
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}
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void
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i386bsd_dr_reset_addr (int regnum)
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{
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gdb_assert (regnum >= 0 && regnum <= 4);
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i386bsd_dr_set (regnum, 0);
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}
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unsigned long
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i386bsd_dr_get_status (void)
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{
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struct dbreg dbregs;
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/* FIXME: kettenis/2001-03-31: Calling perror_with_name if the
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ptrace call fails breaks debugging remote targets. The correct
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way to fix this is to add the hardware breakpoint and watchpoint
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stuff to the target vector. For now, just return zero if the
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ptrace call fails. */
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if (ptrace (PT_GETDBREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
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#if 0
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perror_with_name (_("Couldn't read debug registers"));
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#else
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return 0;
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#endif
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return DBREG_DRX ((&dbregs), 6);
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}
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#endif /* PT_GETDBREGS */
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void
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_initialize_i386bsd_nat (void)
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{
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int offset;
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/* To support the recognition of signal handlers, i386bsd-tdep.c
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hardcodes some constants. Inclusion of this file means that we
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are compiling a native debugger, which means that we can use the
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system header files and sysctl(3) to get at the relevant
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information. */
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#if defined (__FreeBSD_version) && __FreeBSD_version >= 400011
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#define SC_REG_OFFSET i386fbsd4_sc_reg_offset
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||
#elif defined (__FreeBSD_version) && __FreeBSD_version >= 300005
|
||
#define SC_REG_OFFSET i386fbsd_sc_reg_offset
|
||
#elif defined (NetBSD) || defined (__NetBSD_Version__)
|
||
#define SC_REG_OFFSET i386nbsd_sc_reg_offset
|
||
#elif defined (OpenBSD)
|
||
#define SC_REG_OFFSET i386obsd_sc_reg_offset
|
||
#endif
|
||
|
||
#ifdef SC_REG_OFFSET
|
||
|
||
/* We only check the program counter, stack pointer and frame
|
||
pointer since these members of `struct sigcontext' are essential
|
||
for providing backtraces. More checks could be added, but would
|
||
involve adding configure checks for the appropriate structure
|
||
members, since older BSD's don't provide all of them. */
|
||
|
||
#define SC_PC_OFFSET SC_REG_OFFSET[I386_EIP_REGNUM]
|
||
#define SC_SP_OFFSET SC_REG_OFFSET[I386_ESP_REGNUM]
|
||
#define SC_FP_OFFSET SC_REG_OFFSET[I386_EBP_REGNUM]
|
||
|
||
/* Override the default value for the offset of the program counter
|
||
in the sigcontext structure. */
|
||
offset = offsetof (struct sigcontext, sc_pc);
|
||
|
||
if (SC_PC_OFFSET != offset)
|
||
{
|
||
warning (_("\
|
||
offsetof (struct sigcontext, sc_pc) yields %d instead of %d.\n\
|
||
Please report this to <bug-gdb@gnu.org>."),
|
||
offset, SC_PC_OFFSET);
|
||
}
|
||
|
||
SC_PC_OFFSET = offset;
|
||
|
||
/* Likewise for the stack pointer. */
|
||
offset = offsetof (struct sigcontext, sc_sp);
|
||
|
||
if (SC_SP_OFFSET != offset)
|
||
{
|
||
warning (_("\
|
||
offsetof (struct sigcontext, sc_sp) yields %d instead of %d.\n\
|
||
Please report this to <bug-gdb@gnu.org>."),
|
||
offset, SC_SP_OFFSET);
|
||
}
|
||
|
||
SC_SP_OFFSET = offset;
|
||
|
||
/* And the frame pointer. */
|
||
offset = offsetof (struct sigcontext, sc_fp);
|
||
|
||
if (SC_FP_OFFSET != offset)
|
||
{
|
||
warning (_("\
|
||
offsetof (struct sigcontext, sc_fp) yields %d instead of %d.\n\
|
||
Please report this to <bug-gdb@gnu.org>."),
|
||
offset, SC_FP_OFFSET);
|
||
}
|
||
|
||
SC_FP_OFFSET = offset;
|
||
|
||
#endif /* SC_REG_OFFSET */
|
||
}
|