#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)

oLINK		ucontext (uc_link)
oSS_SP		ucontext (uc_stack.ss_sp)
oSS_SIZE	ucontext (uc_stack.ss_size)
oR0		mcontext (gregs[REG_R0])
oR1		mcontext (gregs[REG_R1])
oR2		mcontext (gregs[REG_R2])
oR3		mcontext (gregs[REG_R3])
oR4		mcontext (gregs[REG_R4])
oR5		mcontext (gregs[REG_R5])
oR6		mcontext (gregs[REG_R6])
oR7		mcontext (gregs[REG_R7])
oR8		mcontext (gregs[REG_R8])
oR9		mcontext (gregs[REG_R9])
oR10		mcontext (gregs[REG_R10])
oR11		mcontext (gregs[REG_R11])
oR12		mcontext (gregs[REG_R12])
oR13		mcontext (gregs[REG_R13])
oR14		mcontext (gregs[REG_R14])
oR15		mcontext (gregs[REG_R15])
oPC		mcontext (pc)
oPR		mcontext (pr)
oSR		mcontext (sr)
oGBR		mcontext (gbr)
oMACH		mcontext (mach)
oMACL		mcontext (macl)
oSIGMASK	ucontext (uc_sigmask)