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#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <sys/ptrace.h>
#include <asm/ptrace.h>
#include "ltrace.h"
#if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR))
# define PTRACE_PEEKUSER PTRACE_PEEKUSR
#endif
#if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR))
# define PTRACE_POKEUSER PTRACE_POKEUSR
#endif
#define off_pc 60
#define off_lr 56
#define off_sp 52
void *get_instruction_pointer(struct process *proc)
{
return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, off_pc, 0);
}
void set_instruction_pointer(struct process *proc, void *addr)
{
ptrace(PTRACE_POKEUSER, proc->pid, off_pc, addr);
}
void *get_stack_pointer(struct process *proc)
{
return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, off_sp, 0);
}
/* really, this is given the *stack_pointer expecting
* a CISC architecture; in our case, we don't need that */
void *get_return_addr(struct process *proc, void *stack_pointer)
{
return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, off_lr, 0);
}
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