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/*
* This file is part of ltrace.
* Copyright (C) 2013 Petr Machata, Red Hat Inc.
* Copyright (C) 2004,2008,2009 Juan Cespedes
* Copyright (C) 2006 Ian Wienand
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "config.h"
#include <sys/types.h>
#include "ptrace.h"
#include "proc.h"
#include "common.h"
void *
get_instruction_pointer(struct process *proc)
{
proc_archdep *a = (proc_archdep *) (proc->arch_ptr);
if (a->valid)
return (void *)a->regs.pc;
return (void *)-1;
}
void
set_instruction_pointer(struct process *proc, void *addr)
{
proc_archdep *a = (proc_archdep *) (proc->arch_ptr);
if (a->valid)
a->regs.pc = (long)addr;
}
void *
get_stack_pointer(struct process *proc)
{
proc_archdep *a = (proc_archdep *) (proc->arch_ptr);
if (a->valid)
return (void *)a->regs.u_regs[UREG_I5];
return (void *)-1;
}
void *
get_return_addr(struct process *proc, void *stack_pointer)
{
proc_archdep *a = (proc_archdep *) (proc->arch_ptr);
unsigned int t;
if (!a->valid)
return (void *)-1;
/* Work around structure returns */
t = ptrace(PTRACE_PEEKTEXT, proc->pid, a->regs.u_regs[UREG_I6] + 8, 0);
if (t < 0x400000)
return (void *)a->regs.u_regs[UREG_I6] + 12;
return (void *)a->regs.u_regs[UREG_I6] + 8;
}
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