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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 "ltrace.h"
/* Returns syscall number if `pid' stopped because of a syscall.
* Returns -1 otherwise
*/
int syscall_p(pid_t pid, int status)
{
#if 0
if (WIFSTOPPED(status) && WSTOPSIG(status)==SIGTRAP) {
int tmp = ptrace(PTRACE_PEEKUSER, pid, 4*ORIG_EAX);
if (tmp>=0) {
return tmp;
}
}
#endif
return -1;
}
void continue_after_breakpoint(struct process *proc, struct breakpoint * sbp, int delete_it)
{
delete_breakpoint(proc->pid, sbp);
ptrace(PTRACE_POKEUSER, proc->pid, PT_PC, sbp->addr);
if (delete_it) {
continue_process(proc->pid);
} else {
proc->breakpoint_being_enabled = sbp;
ptrace(PTRACE_SINGLESTEP, proc->pid, 0, 0);
}
}
long gimme_arg(enum tof type, struct process * proc, int arg_num)
{
#if 0
if (arg_num==-1) { /* return value */
return ptrace(PTRACE_PEEKUSER, proc->pid, 4*EAX);
}
if (type==LT_TOF_FUNCTION) {
return ptrace(PTRACE_PEEKTEXT, proc->pid, proc->stack_pointer+4*(arg_num+1));
} else if (type==LT_TOF_SYSCALL) {
#if 0
switch(arg_num) {
case 0: return ptrace(PTRACE_PEEKUSER, proc->pid, 4*EBX);
case 1: return ptrace(PTRACE_PEEKUSER, proc->pid, 4*ECX);
case 2: return ptrace(PTRACE_PEEKUSER, proc->pid, 4*EDX);
case 3: return ptrace(PTRACE_PEEKUSER, proc->pid, 4*ESI);
case 4: return ptrace(PTRACE_PEEKUSER, proc->pid, 4*EDI);
default:
fprintf(stderr, "gimme_arg called with wrong arguments\n");
exit(2);
}
#else
return ptrace(PTRACE_PEEKUSER, proc->pid, 4*arg_num);
#endif
} else {
fprintf(stderr, "gimme_arg called with wrong arguments\n");
exit(1);
}
#endif
return 0;
}
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