#include <stddef.h>
#include <signal.h>
#include <sys/ucontext.h>

--

SIG_BLOCK
SIG_SETMASK

#define ucontext(member)	offsetof (ucontext_t, member)
#define mcontext(member)	ucontext (uc_mcontext.member)
#define mreg(reg)		mcontext (gregs[REG_##reg])

oLINK		ucontext (uc_link)
oSS_SP		ucontext (uc_stack.ss_sp)
oSS_SIZE	ucontext (uc_stack.ss_size)
oGS		mreg (GS)
oFS		mreg (FS)
oEDI		mreg (EDI)
oESI		mreg (ESI)
oEBP		mreg (EBP)
oESP		mreg (ESP)
oEBX		mreg (EBX)
oEDX		mreg (EDX)
oECX		mreg (ECX)
oEAX		mreg (EAX)
oEIP		mreg (EIP)
oFPREGS		mcontext (fpregs)
oSIGMASK	ucontext (uc_sigmask)
oFPREGSMEM	ucontext (__fpregs_mem)
