106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/* Low level Alpha GNU/Linux interface, for GDB when running native.
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Copyright (C) 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 "target.h"
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#include "regcache.h"
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#include "linux-nat.h"
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#include "alpha-tdep.h"
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#include <sys/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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/*
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* See the comment in m68k-tdep.c regarding the utility of these functions.
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*/
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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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/*
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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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*/
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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 == PC_REGNUM)
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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 < FP0_REGNUM)
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return GPR_BASE + regno;
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else
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return FPR_BASE + regno - FP0_REGNUM;
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}
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void _initialialize_alpha_linux_nat (void);
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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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