#define SIG_BLOCK 0
#define SIG_SETMASK 2
#define oLINK 4
#define oSS_SP 8
#define oSS_SIZE 16
#define oGS 20
#define oFS 24
#define oEDI 36
#define oESI 40
#define oEBP 44
#define oESP 48
#define oEBX 52
#define oEDX 56
#define oECX 60
#define oEAX 64
#define oEIP 76
#define oFPREGS 96
#define oSIGMASK 108
#define oFPREGSMEM 236