1*c9945492SAndroid Build Coastguard Worker #include <sys/ptrace.h>
2*c9945492SAndroid Build Coastguard Worker #include <stdarg.h>
3*c9945492SAndroid Build Coastguard Worker #include <unistd.h>
4*c9945492SAndroid Build Coastguard Worker #include "syscall.h"
5*c9945492SAndroid Build Coastguard Worker
ptrace(int req,...)6*c9945492SAndroid Build Coastguard Worker long ptrace(int req, ...)
7*c9945492SAndroid Build Coastguard Worker {
8*c9945492SAndroid Build Coastguard Worker va_list ap;
9*c9945492SAndroid Build Coastguard Worker pid_t pid;
10*c9945492SAndroid Build Coastguard Worker void *addr, *data, *addr2 = 0;
11*c9945492SAndroid Build Coastguard Worker long ret, result;
12*c9945492SAndroid Build Coastguard Worker
13*c9945492SAndroid Build Coastguard Worker va_start(ap, req);
14*c9945492SAndroid Build Coastguard Worker pid = va_arg(ap, pid_t);
15*c9945492SAndroid Build Coastguard Worker addr = va_arg(ap, void *);
16*c9945492SAndroid Build Coastguard Worker data = va_arg(ap, void *);
17*c9945492SAndroid Build Coastguard Worker /* PTRACE_{READ,WRITE}{DATA,TEXT} (16...19) are specific to SPARC. */
18*c9945492SAndroid Build Coastguard Worker #ifdef PTRACE_READDATA
19*c9945492SAndroid Build Coastguard Worker if ((unsigned)req - PTRACE_READDATA < 4)
20*c9945492SAndroid Build Coastguard Worker addr2 = va_arg(ap, void *);
21*c9945492SAndroid Build Coastguard Worker #endif
22*c9945492SAndroid Build Coastguard Worker va_end(ap);
23*c9945492SAndroid Build Coastguard Worker
24*c9945492SAndroid Build Coastguard Worker if (req-1U < 3) data = &result;
25*c9945492SAndroid Build Coastguard Worker ret = syscall(SYS_ptrace, req, pid, addr, data, addr2);
26*c9945492SAndroid Build Coastguard Worker
27*c9945492SAndroid Build Coastguard Worker if (ret < 0 || req-1U >= 3) return ret;
28*c9945492SAndroid Build Coastguard Worker return result;
29*c9945492SAndroid Build Coastguard Worker }
30