#include <errno.h> #include <asm/ptrace.h> #include <sys/syscall.h> #include <stdarg.h> int ptrace(int request, ... /* int pid, int addr, int data */) { long ret; long res; int pid,addr,data; va_list ap; va_start(ap,request); pid = va_arg(ap,int); addr = va_arg(ap,int); data = va_arg(ap,int); va_end(ap); if (request > 0 && request < 4) (long *)data = &ret; __asm__ volatile ("sub.l er0,er0\n\t" "mov.b %1,r0l\n\t" "mov.l %2,er1\n\t" "mov.l %3,er2\n\t" "mov.l %4,er3\n\t" "mov.l %5,er4\n\t" "trapa #0\n\t" "mov.l er0,%0" :"=g" (res) :"i" (__NR_ptrace), "g" (request), "g" (pid), "g" (addr), "g" (data) : "er0", "er1", "er2", "er3", "er4"); if (res >= 0) { if (request > 0 && request < 4) { __set_errno(0); return (ret); } return (int) res; } __set_errno(-res); return -1; }