mirror of
https://sourceware.org/git/binutils-gdb.git
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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.
392 lines
11 KiB
C
392 lines
11 KiB
C
/* S390 native-dependent code for GDB, the GNU debugger.
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Copyright (C) 2001, 2003, 2004, 2005, 2006
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Free Software Foundation, Inc
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Contributed by D.J. Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
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for IBM Deutschland Entwicklung GmbH, IBM Corporation.
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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 "regcache.h"
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#include "inferior.h"
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#include "target.h"
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#include "linux-nat.h"
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#include "s390-tdep.h"
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#include <asm/ptrace.h>
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#include <sys/ptrace.h>
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#include <asm/types.h>
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#include <sys/procfs.h>
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#include <sys/ucontext.h>
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/* Map registers to gregset/ptrace offsets.
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These arrays are defined in s390-tdep.c. */
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#ifdef __s390x__
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#define regmap_gregset s390x_regmap_gregset
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#else
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#define regmap_gregset s390_regmap_gregset
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#endif
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#define regmap_fpregset s390_regmap_fpregset
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/* When debugging a 32-bit executable running under a 64-bit kernel,
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we have to fix up the 64-bit registers we get from the kernel
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to make them look like 32-bit registers. */
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#ifdef __s390x__
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#define SUBOFF(i) \
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((TARGET_PTR_BIT == 32 \
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&& ((i) == S390_PSWA_REGNUM \
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|| ((i) >= S390_R0_REGNUM && (i) <= S390_R15_REGNUM)))? 4 : 0)
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#else
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#define SUBOFF(i) 0
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#endif
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/* Fill GDB's register array with the general-purpose register values
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in *REGP. */
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void
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supply_gregset (struct regcache *regcache, const gregset_t *regp)
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{
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int i;
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for (i = 0; i < S390_NUM_REGS; i++)
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if (regmap_gregset[i] != -1)
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regcache_raw_supply (regcache, i,
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(const char *)regp + regmap_gregset[i] + SUBOFF (i));
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}
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/* Fill register REGNO (if it is a general-purpose register) in
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*REGP with the value in GDB's register array. If REGNO is -1,
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do this for all registers. */
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void
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fill_gregset (const struct regcache *regcache, gregset_t *regp, int regno)
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{
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int i;
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for (i = 0; i < S390_NUM_REGS; i++)
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if (regmap_gregset[i] != -1)
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if (regno == -1 || regno == i)
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regcache_raw_collect (regcache, i,
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(char *)regp + regmap_gregset[i] + SUBOFF (i));
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}
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/* Fill GDB's register array with the floating-point register values
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in *REGP. */
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void
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supply_fpregset (struct regcache *regcache, const fpregset_t *regp)
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{
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int i;
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for (i = 0; i < S390_NUM_REGS; i++)
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if (regmap_fpregset[i] != -1)
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regcache_raw_supply (regcache, i,
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(const char *)regp + regmap_fpregset[i]);
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}
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/* Fill register REGNO (if it is a general-purpose register) in
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*REGP with the value in GDB's register array. If REGNO is -1,
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do this for all registers. */
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void
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fill_fpregset (const struct regcache *regcache, fpregset_t *regp, int regno)
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{
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int i;
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for (i = 0; i < S390_NUM_REGS; i++)
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if (regmap_fpregset[i] != -1)
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if (regno == -1 || regno == i)
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regcache_raw_collect (regcache, i,
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(char *)regp + regmap_fpregset[i]);
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}
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/* Find the TID for the current inferior thread to use with ptrace. */
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static int
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s390_inferior_tid (void)
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{
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/* GNU/Linux LWP ID's are process ID's. */
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int tid = TIDGET (inferior_ptid);
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if (tid == 0)
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tid = PIDGET (inferior_ptid); /* Not a threaded program. */
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return tid;
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}
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/* Fetch all general-purpose registers from process/thread TID and
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store their values in GDB's register cache. */
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static void
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fetch_regs (struct regcache *regcache, int tid)
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{
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gregset_t regs;
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ptrace_area parea;
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parea.len = sizeof (regs);
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parea.process_addr = (addr_t) ®s;
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parea.kernel_addr = offsetof (struct user_regs_struct, psw);
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if (ptrace (PTRACE_PEEKUSR_AREA, tid, (long) &parea) < 0)
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perror_with_name (_("Couldn't get registers"));
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supply_gregset (regcache, (const gregset_t *) ®s);
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}
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/* Store all valid general-purpose registers in GDB's register cache
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into the process/thread specified by TID. */
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static void
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store_regs (const struct regcache *regcache, int tid, int regnum)
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{
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gregset_t regs;
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ptrace_area parea;
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parea.len = sizeof (regs);
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parea.process_addr = (addr_t) ®s;
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parea.kernel_addr = offsetof (struct user_regs_struct, psw);
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if (ptrace (PTRACE_PEEKUSR_AREA, tid, (long) &parea) < 0)
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perror_with_name (_("Couldn't get registers"));
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fill_gregset (regcache, ®s, regnum);
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if (ptrace (PTRACE_POKEUSR_AREA, tid, (long) &parea) < 0)
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perror_with_name (_("Couldn't write registers"));
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}
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/* Fetch all floating-point registers from process/thread TID and store
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their values in GDB's register cache. */
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static void
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fetch_fpregs (struct regcache *regcache, int tid)
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{
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fpregset_t fpregs;
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ptrace_area parea;
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parea.len = sizeof (fpregs);
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parea.process_addr = (addr_t) &fpregs;
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parea.kernel_addr = offsetof (struct user_regs_struct, fp_regs);
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if (ptrace (PTRACE_PEEKUSR_AREA, tid, (long) &parea) < 0)
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perror_with_name (_("Couldn't get floating point status"));
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supply_fpregset (regcache, (const fpregset_t *) &fpregs);
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}
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/* Store all valid floating-point registers in GDB's register cache
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into the process/thread specified by TID. */
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static void
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store_fpregs (const struct regcache *regcache, int tid, int regnum)
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{
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fpregset_t fpregs;
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ptrace_area parea;
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parea.len = sizeof (fpregs);
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parea.process_addr = (addr_t) &fpregs;
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parea.kernel_addr = offsetof (struct user_regs_struct, fp_regs);
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if (ptrace (PTRACE_PEEKUSR_AREA, tid, (long) &parea) < 0)
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perror_with_name (_("Couldn't get floating point status"));
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fill_fpregset (regcache, &fpregs, regnum);
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if (ptrace (PTRACE_POKEUSR_AREA, tid, (long) &parea) < 0)
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perror_with_name (_("Couldn't write floating point status"));
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}
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/* Fetch register REGNUM from the child process. If REGNUM is -1, do
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this for all registers. */
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static void
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s390_linux_fetch_inferior_registers (struct regcache *regcache, int regnum)
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{
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int tid = s390_inferior_tid ();
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if (regnum == -1
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|| (regnum < S390_NUM_REGS && regmap_gregset[regnum] != -1))
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fetch_regs (regcache, tid);
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if (regnum == -1
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|| (regnum < S390_NUM_REGS && regmap_fpregset[regnum] != -1))
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fetch_fpregs (regcache, tid);
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}
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/* Store register REGNUM back into the child process. If REGNUM is
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-1, do this for all registers. */
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static void
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s390_linux_store_inferior_registers (struct regcache *regcache, int regnum)
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{
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int tid = s390_inferior_tid ();
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if (regnum == -1
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|| (regnum < S390_NUM_REGS && regmap_gregset[regnum] != -1))
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store_regs (regcache, tid, regnum);
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if (regnum == -1
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|| (regnum < S390_NUM_REGS && regmap_fpregset[regnum] != -1))
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store_fpregs (regcache, tid, regnum);
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}
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/* Hardware-assisted watchpoint handling. */
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/* We maintain a list of all currently active watchpoints in order
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to properly handle watchpoint removal.
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The only thing we actually need is the total address space area
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spanned by the watchpoints. */
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struct watch_area
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{
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struct watch_area *next;
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CORE_ADDR lo_addr;
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CORE_ADDR hi_addr;
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};
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static struct watch_area *watch_base = NULL;
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static int
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s390_stopped_by_watchpoint (void)
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{
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per_lowcore_bits per_lowcore;
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ptrace_area parea;
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/* Speed up common case. */
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if (!watch_base)
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return 0;
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parea.len = sizeof (per_lowcore);
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parea.process_addr = (addr_t) & per_lowcore;
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parea.kernel_addr = offsetof (struct user_regs_struct, per_info.lowcore);
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if (ptrace (PTRACE_PEEKUSR_AREA, s390_inferior_tid (), &parea) < 0)
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perror_with_name (_("Couldn't retrieve watchpoint status"));
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return per_lowcore.perc_storage_alteration == 1
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&& per_lowcore.perc_store_real_address == 0;
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}
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static void
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s390_fix_watch_points (void)
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{
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int tid = s390_inferior_tid ();
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per_struct per_info;
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ptrace_area parea;
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CORE_ADDR watch_lo_addr = (CORE_ADDR)-1, watch_hi_addr = 0;
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struct watch_area *area;
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for (area = watch_base; area; area = area->next)
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{
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watch_lo_addr = min (watch_lo_addr, area->lo_addr);
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watch_hi_addr = max (watch_hi_addr, area->hi_addr);
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}
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parea.len = sizeof (per_info);
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parea.process_addr = (addr_t) & per_info;
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parea.kernel_addr = offsetof (struct user_regs_struct, per_info);
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if (ptrace (PTRACE_PEEKUSR_AREA, tid, &parea) < 0)
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perror_with_name (_("Couldn't retrieve watchpoint status"));
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if (watch_base)
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{
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per_info.control_regs.bits.em_storage_alteration = 1;
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per_info.control_regs.bits.storage_alt_space_ctl = 1;
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}
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else
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{
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per_info.control_regs.bits.em_storage_alteration = 0;
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per_info.control_regs.bits.storage_alt_space_ctl = 0;
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}
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per_info.starting_addr = watch_lo_addr;
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per_info.ending_addr = watch_hi_addr;
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if (ptrace (PTRACE_POKEUSR_AREA, tid, &parea) < 0)
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perror_with_name (_("Couldn't modify watchpoint status"));
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}
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static int
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s390_insert_watchpoint (CORE_ADDR addr, int len, int type)
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{
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struct watch_area *area = xmalloc (sizeof (struct watch_area));
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if (!area)
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return -1;
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area->lo_addr = addr;
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area->hi_addr = addr + len - 1;
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area->next = watch_base;
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watch_base = area;
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s390_fix_watch_points ();
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return 0;
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}
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static int
|
|
s390_remove_watchpoint (CORE_ADDR addr, int len, int type)
|
|
{
|
|
struct watch_area *area, **parea;
|
|
|
|
for (parea = &watch_base; *parea; parea = &(*parea)->next)
|
|
if ((*parea)->lo_addr == addr
|
|
&& (*parea)->hi_addr == addr + len - 1)
|
|
break;
|
|
|
|
if (!*parea)
|
|
{
|
|
fprintf_unfiltered (gdb_stderr,
|
|
"Attempt to remove nonexistent watchpoint.\n");
|
|
return -1;
|
|
}
|
|
|
|
area = *parea;
|
|
*parea = area->next;
|
|
xfree (area);
|
|
|
|
s390_fix_watch_points ();
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
s390_can_use_hw_breakpoint (int type, int cnt, int othertype)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
s390_region_ok_for_hw_watchpoint (CORE_ADDR addr, int cnt)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
|
|
void _initialize_s390_nat (void);
|
|
|
|
void
|
|
_initialize_s390_nat (void)
|
|
{
|
|
struct target_ops *t;
|
|
|
|
/* Fill in the generic GNU/Linux methods. */
|
|
t = linux_target ();
|
|
|
|
/* Add our register access methods. */
|
|
t->to_fetch_registers = s390_linux_fetch_inferior_registers;
|
|
t->to_store_registers = s390_linux_store_inferior_registers;
|
|
|
|
/* Add our watchpoint methods. */
|
|
t->to_can_use_hw_breakpoint = s390_can_use_hw_breakpoint;
|
|
t->to_region_ok_for_hw_watchpoint = s390_region_ok_for_hw_watchpoint;
|
|
t->to_have_continuable_watchpoint = 1;
|
|
t->to_stopped_by_watchpoint = s390_stopped_by_watchpoint;
|
|
t->to_insert_watchpoint = s390_insert_watchpoint;
|
|
t->to_remove_watchpoint = s390_remove_watchpoint;
|
|
|
|
/* Register the target. */
|
|
linux_nat_add_target (t);
|
|
}
|