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6798487f5b
There are only two inf_ptrace_trad_target users, MIPS GNU/Linux and Alpha GNU/Linux. They both call it via linux_trad_target. Move this code out of inf-ptrace.c to a GNU/Linux-specific new file. Making this code be GNU/Linux-specific simplifies C++ification of target_ops, because we can make the trad target inherit linux_nat instead of inheriting inf_ptrace. That'll be visible in a later patch. Note this makes linux_target_install_ops an extern function, but that is temporary -- the function will disappear once target_ops is made a C++ class with virtual methods, later in the series. Also, I did not rename the functions in the new file for a similar reason. They'll be renamed again anyway in a couple of patches. gdb/ChangeLog: 2018-05-02 Pedro Alves <palves@redhat.com> * alpha-linux-nat.c: Include "linux-nat-trad.h" instead of "linux-nat.h". * configure.nat (alpha-linux, linux-mips): Add linux-nat-trad.o. * inf-ptrace.c (inf_ptrace_register_u_offset) (inf_ptrace_fetch_register, inf_ptrace_fetch_registers) (inf_ptrace_store_register, inf_ptrace_store_registers) (inf_ptrace_trad_target): Move to ... * linux-nat-trad.c: ... this new file. * linux-nat-trad.h: New file. * linux-nat.c (linux_target_install_ops): Make extern. (linux_trad_target): Delete. * linux-nat.h (linux_trad_target): Delete declaration. (linux_target_install_ops): Declare. * mips-linux-nat.c: Include "linux-nat-trad.h" instead of "linux-nat.h".
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* Low level Alpha GNU/Linux interface, for GDB when running native.
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Copyright (C) 2005-2018 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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "target.h"
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#include "regcache.h"
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#include "linux-nat-trad.h"
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#include "alpha-tdep.h"
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#include "nat/gdb_ptrace.h"
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#include <alpha/ptrace.h>
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#include <sys/procfs.h>
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#include "gregset.h"
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/* The address of UNIQUE for ptrace. */
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#define ALPHA_UNIQUE_PTRACE_ADDR 65
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/* See the comment in m68k-tdep.c regarding the utility of these
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functions. */
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void
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supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
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{
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const long *regp = (const long *)gregsetp;
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/* PC is in slot 32, UNIQUE is in slot 33. */
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alpha_supply_int_regs (regcache, -1, regp, regp + 31, regp + 32);
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}
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void
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fill_gregset (const struct regcache *regcache,
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gdb_gregset_t *gregsetp, int regno)
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{
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long *regp = (long *)gregsetp;
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/* PC is in slot 32, UNIQUE is in slot 33. */
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alpha_fill_int_regs (regcache, regno, regp, regp + 31, regp + 32);
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}
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/* Now we do the same thing for floating-point registers.
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Again, see the comments in m68k-tdep.c. */
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void
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supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
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{
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const long *regp = (const long *)fpregsetp;
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/* FPCR is in slot 32. */
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alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
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}
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void
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fill_fpregset (const struct regcache *regcache,
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gdb_fpregset_t *fpregsetp, int regno)
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{
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long *regp = (long *)fpregsetp;
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/* FPCR is in slot 32. */
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alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
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}
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static CORE_ADDR
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alpha_linux_register_u_offset (struct gdbarch *gdbarch, int regno, int store_p)
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{
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if (regno == gdbarch_pc_regnum (gdbarch))
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return PC;
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if (regno == ALPHA_UNIQUE_REGNUM)
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return ALPHA_UNIQUE_PTRACE_ADDR;
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if (regno < gdbarch_fp0_regnum (gdbarch))
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return GPR_BASE + regno;
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else
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return FPR_BASE + regno - gdbarch_fp0_regnum (gdbarch);
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}
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void
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_initialize_alpha_linux_nat (void)
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{
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linux_nat_add_target (linux_trad_target (alpha_linux_register_u_offset));
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}
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