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#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <sys/ptrace.h>
#include <asm/ptrace.h>
#include <elf.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
void get_arch_dep(struct process *proc)
{
#ifdef __powerpc64__
if (proc->arch_ptr)
return;
proc->mask_32bit = (proc->e_machine == EM_PPC);
proc->arch_ptr = (void *)1;
#endif
}
/* Returns 1 if syscall, 2 if sysret, 0 otherwise.
*/
#define SYSCALL_INSN 0x44000002
int syscall_p(struct process *proc, int status, int *sysnum)
{
if (WIFSTOPPED(status)
&& WSTOPSIG(status) == (SIGTRAP | proc->tracesysgood)) {
long pc = (long)get_instruction_pointer(proc);
int insn =
(int)ptrace(PTRACE_PEEKTEXT, proc->pid, pc - sizeof(long),
0);
if (insn == SYSCALL_INSN) {
*sysnum =
(int)ptrace(PTRACE_PEEKUSER, proc->pid,
sizeof(long) * PT_R0, 0);
if (proc->callstack_depth > 0
&& proc->callstack[proc->callstack_depth -
1].is_syscall) {
return 2;
}
return 1;
}
}
return 0;
}
long gimme_arg(enum tof type, struct process *proc, arg_type_info *info)
{
int arg_num = info->arg_num;
if (arg_num == -1) { /* return value */
return ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long) * PT_R3,
0);
} else if (arg_num < 8) {
return ptrace(PTRACE_PEEKUSER, proc->pid,
sizeof(long) * (arg_num + PT_R3), 0);
} else {
return ptrace(PTRACE_PEEKDATA, proc->pid,
proc->stack_pointer + 8 * (arg_num - 8), 0);
}
return 0;
}
void save_register_args(enum tof type, struct process *proc)
{
}
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