code: 9ferno

ref: 58055b9e3a8c6df1cd128a3d4ed3667eab94e472
dir: /Plan9/power/include/emu.h/

View raw version 
/*
 * system- and machine-specific declarations for emu:
 * floating-point save and restore, signal handling primitive, and
 * implementation of the current-process variable `up'.
 */

extern	Proc**	Xup;
#define	up	(*Xup)

typedef	struct	FPU	FPU;

/*
 * This structure must agree with FPsave and FPrestore asm routines
 */
typedef struct FPU FPU;
struct FPU
{
	double	fpreg[32];
	union {
		double	fpscrd;
		struct {
			ulong	pad;
			ulong	fpscr;
		};
	};
};

typedef jmp_buf osjmpbuf;
#define	ossetjmp(buf)	setjmp(buf)