diff --git a/amd64/include/u.h b/amd64/include/u.h
new file mode 100644
index 000000000..feb121703
--- /dev/null
+++ b/amd64/include/u.h
@@ -0,0 +1,72 @@
+#define nil		((void*)0)
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+typedef unsigned long	ulong;
+typedef unsigned int	uint;
+typedef   signed char	schar;
+typedef	long long	vlong;
+typedef	unsigned long long uvlong;
+typedef unsigned long long uintptr;
+typedef unsigned long	usize;
+typedef	ushort		Rune;
+typedef union FPdbleword FPdbleword;
+typedef uvlong		jmp_buf[2];
+#define	JMPBUFSP	0
+#define	JMPBUFPC	1
+#define	JMPBUFDPC	0
+typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
+typedef unsigned char	u8int;
+typedef unsigned short	u16int;
+typedef unsigned int	u32int;
+typedef unsigned long long u64int;
+
+/* MXCSR */
+/* fcr */
+#define	FPFTZ	(1<<15)	/* amd64 */
+#define	FPINEX	(1<<12)
+#define	FPUNFL	(1<<11)
+#define	FPOVFL	(1<<10)
+#define	FPZDIV	(1<<9)
+#define	FPDNRM	(1<<8)	/* amd64 */
+#define	FPINVAL	(1<<7)
+#define	FPDAZ	(1<<6)	/* amd64 */
+#define	FPRNR	(0<<13)
+#define	FPRZ	(3<<13)
+#define	FPRPINF	(2<<13)
+#define	FPRNINF	(1<<13)
+#define	FPRMASK	(3<<13)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* fsr */
+#define	FPAINEX	(1<<5)
+#define	FPAUNFL	(1<<4)
+#define	FPAOVFL	(1<<3)
+#define	FPAZDIV	(1<<2)
+#define	FPADNRM	(1<<1)	/* not in plan 9 */
+#define	FPAINVAL	(1<<0)
+union FPdbleword
+{
+	double	x;
+	struct {	/* little endian */
+		uint lo;
+		uint hi;
+	};
+};
+
+typedef	char*	va_list;
+#define va_start(list, start) list =\
+	(sizeof(start) < 8?\
+		(char*)((vlong*)&(start)+1):\
+		(char*)(&(start)+1))
+#define va_end(list)\
+	USED(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((list += 8), (mode*)list)[-8]:\
+	(sizeof(mode) == 2)?\
+		((list += 8), (mode*)list)[-4]:\
+	(sizeof(mode) == 4)?\
+		((list += 8), (mode*)list)[-2]:\
+		((list += sizeof(mode)), (mode*)list)[-1])
diff --git a/amd64/include/ureg.h b/amd64/include/ureg.h
new file mode 100644
index 000000000..bf0613ac0
--- /dev/null
+++ b/amd64/include/ureg.h
@@ -0,0 +1,30 @@
+struct Ureg {
+	u64int	ax;
+	u64int	bx;
+	u64int	cx;
+	u64int	dx;
+	u64int	si;
+	u64int	di;
+	u64int	bp;
+	u64int	r8;
+	u64int	r9;
+	u64int	r10;
+	u64int	r11;
+	u64int	r12;
+	u64int	r13;
+	u64int	r14;
+	u64int	r15;
+
+	u16int	ds;
+	u16int	es;
+	u16int	fs;
+	u16int	gs;
+
+	u64int	type;
+	u64int	error;				/* error code (or zero) */
+	u64int	ip;				/* pc */
+	u64int	cs;				/* old context */
+	u64int	flags;				/* old flags */
+	u64int	sp;				/* sp */
+	u64int	ss;				/* old stack segment */
+};
diff --git a/amd64/mkfile b/amd64/mkfile
new file mode 100644
index 000000000..09eacd85b
--- /dev/null
+++ b/amd64/mkfile
@@ -0,0 +1,6 @@
+</sys/src/mkfile.proto
+
+CC=6c
+LD=6l
+O=6
+AS=6a
diff --git a/arm/include/ape/float.h b/arm/include/ape/float.h
new file mode 100644
index 000000000..4df158e51
--- /dev/null
+++ b/arm/include/ape/float.h
@@ -0,0 +1,73 @@
+#ifndef __FLOAT
+#define __FLOAT
+/* IEEE, default rounding */
+
+#define FLT_ROUNDS	1
+#define FLT_RADIX	2
+
+#define FLT_DIG		6
+#define FLT_EPSILON	1.19209290e-07
+#define FLT_MANT_DIG	24
+#define FLT_MAX		3.40282347e+38
+#define FLT_MAX_10_EXP	38
+#define FLT_MAX_EXP	128
+#define FLT_MIN		1.17549435e-38
+#define FLT_MIN_10_EXP	-37
+#define FLT_MIN_EXP	-125
+
+#define DBL_DIG		15
+#define DBL_EPSILON	2.2204460492503131e-16
+#define DBL_MANT_DIG	53
+#define DBL_MAX		1.797693134862315708145e+308
+#define DBL_MAX_10_EXP	308
+#define DBL_MAX_EXP	1024
+#define DBL_MIN		2.225073858507201383090233e-308
+#define DBL_MIN_10_EXP	-307
+#define DBL_MIN_EXP	-1021
+#define LDBL_MANT_DIG	DBL_MANT_DIG
+#define LDBL_EPSILON	DBL_EPSILON
+#define LDBL_DIG	DBL_DIG
+#define LDBL_MIN_EXP	DBL_MIN_EXP
+#define LDBL_MIN	DBL_MIN
+#define LDBL_MIN_10_EXP	DBL_MIN_10_EXP
+#define LDBL_MAX_EXP	DBL_MAX_EXP
+#define LDBL_MAX	DBL_MAX
+#define LDBL_MAX_10_EXP	DBL_MAX_10_EXP
+
+typedef 	union FPdbleword FPdbleword;
+union FPdbleword
+{
+	double	x;
+	struct {	/* little endian */
+		long lo;
+		long hi;
+	};
+};
+
+#ifdef _RESEARCH_SOURCE
+/* define stuff needed for floating conversion */
+#define IEEE_8087	1
+#define Sudden_Underflow 1
+#endif
+#ifdef _PLAN9_SOURCE
+/* FCR */
+#define	FPINEX	(1<<5)
+#define	FPOVFL	(1<<3)
+#define	FPUNFL	((1<<4)|(1<<1))
+#define	FPZDIV	(1<<2)
+#define	FPRNR	(0<<10)
+#define	FPRZ	(3<<10)
+#define	FPRPINF	(2<<10)
+#define	FPRNINF	(1<<10)
+#define	FPRMASK	(3<<10)
+#define	FPPEXT	(3<<8)
+#define	FPPSGL	(0<<8)
+#define	FPPDBL	(2<<8)
+#define	FPPMASK	(3<<8)
+/* FSR */
+#define	FPAINEX	FPINEX
+#define	FPAOVFL	FPOVFL
+#define	FPAUNFL	FPUNFL
+#define	FPAZDIV	FPZDIV
+#endif
+#endif /* __FLOAT */
diff --git a/arm/include/ape/math.h b/arm/include/ape/math.h
new file mode 100644
index 000000000..5fa374801
--- /dev/null
+++ b/arm/include/ape/math.h
@@ -0,0 +1,77 @@
+#ifndef __MATH
+#define __MATH
+#pragma lib "/$M/lib/ape/libap.a"
+
+/* a HUGE_VAL appropriate for IEEE double-precision */
+/* the correct value, 1.797693134862316e+308, causes a ken overflow */
+#define HUGE_VAL 1.79769313486231e+308
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern double acos(double);
+extern double asin(double);
+extern double atan(double);
+extern double atan2(double, double);
+extern double cos(double);
+extern double sin(double);
+extern double tan(double);
+extern double cosh(double);
+extern double sinh(double);
+extern double tanh(double);
+extern double exp(double);
+extern double frexp(double, int *);
+extern double ldexp(double, int);
+extern double log(double);
+extern double log10(double);
+extern double modf(double, double *);
+extern double pow(double, double);
+extern double sqrt(double);
+extern double ceil(double);
+extern double fabs(double);
+extern double floor(double);
+extern double fmod(double, double);
+extern double NaN(void);
+extern int isNaN(double);
+extern double Inf(int);
+extern int isInf(double, int);
+
+#ifdef _RESEARCH_SOURCE
+/* does >> treat left operand as unsigned ? */
+#define Unsigned_Shifts 1
+#define	M_E		2.7182818284590452354	/* e */
+#define	M_LOG2E		1.4426950408889634074	/* log 2e */
+#define	M_LOG10E	0.43429448190325182765	/* log 10e */
+#define	M_LN2		0.69314718055994530942	/* log e2 */
+#define	M_LN10		2.30258509299404568402	/* log e10 */
+#define	M_PI		3.14159265358979323846	/* pi */
+#define	M_PI_2		1.57079632679489661923	/* pi/2 */
+#define	M_PI_4		0.78539816339744830962	/* pi/4 */
+#define	M_1_PI		0.31830988618379067154	/* 1/pi */
+#define	M_2_PI		0.63661977236758134308	/* 2/pi */
+#define	M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
+#define	M_SQRT2		1.41421356237309504880	/* sqrt(2) */
+#define	M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
+
+extern double hypot(double, double);
+extern double erf(double);
+extern double erfc(double);
+extern double j0(double);
+extern double y0(double);
+extern double j1(double);
+extern double y1(double);
+extern double jn(int, double);
+extern double yn(int, double);
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#define isnan(x) isNaN(x)
+#define isinf(x) isInf(x)
+
+#endif /* __MATH */
diff --git a/arm/include/ape/stdarg.h b/arm/include/ape/stdarg.h
new file mode 100644
index 000000000..05d033e4c
--- /dev/null
+++ b/arm/include/ape/stdarg.h
@@ -0,0 +1,11 @@
+#ifndef __STDARG
+#define __STDARG
+
+typedef char *va_list;
+
+#define va_start(list, start) list = (sizeof(start)<4 ? (char *)((int *)&(start)+1) : \
+(char *)(&(start)+1))
+#define va_end(list)
+#define va_arg(list, mode) ((mode*)(list += sizeof(mode)))[-1]
+
+#endif /* __STDARG */
diff --git a/arm/include/ape/ureg.h b/arm/include/ape/ureg.h
new file mode 100644
index 000000000..354bf2c02
--- /dev/null
+++ b/arm/include/ape/ureg.h
@@ -0,0 +1,35 @@
+#ifndef __UREG_H
+#define __UREG_H
+#if !defined(_PLAN9_SOURCE)
+    This header file is an extension to ANSI/POSIX
+#endif
+
+struct Ureg
+{
+	unsigned long	r0;
+	unsigned long	r1;
+	unsigned long	r2;
+	unsigned long	r3;
+	unsigned long	r4;
+	unsigned long	r5;
+	unsigned long	r6;
+	unsigned long	r7;
+	unsigned long	r8;
+	unsigned long	r9;
+	unsigned long	r10;
+	unsigned long	r11;
+	unsigned long	r12;	/* sb */
+	union {
+		unsigned long	r13;
+		unsigned long	sp;
+	};
+	union {
+		unsigned long	r14;
+		unsigned long	link;
+	};
+	unsigned long	type;	/* of exception */
+	unsigned long	psr;
+	unsigned long	pc;	/* interrupted addr */
+};
+
+#endif
diff --git a/arm/include/u.h b/arm/include/u.h
new file mode 100644
index 000000000..db55db33d
--- /dev/null
+++ b/arm/include/u.h
@@ -0,0 +1,66 @@
+#define nil		((void*)0)
+
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+typedef	unsigned long	ulong;
+typedef	unsigned int	uint;
+typedef	signed char	schar;
+typedef	long long	vlong;
+typedef	unsigned long long uvlong;
+typedef unsigned long	uintptr;
+typedef unsigned long	usize;
+typedef	ushort		Rune;
+typedef 	union FPdbleword FPdbleword;
+typedef long	jmp_buf[2];
+#define	JMPBUFSP	0
+#define	JMPBUFPC	1
+#define	JMPBUFDPC	0
+typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
+typedef unsigned char u8int;
+typedef unsigned short u16int;
+typedef unsigned int	u32int;
+typedef unsigned long long u64int;
+
+/* FCR */
+#define	FPINEX	(1<<20)
+#define	FPUNFL	(1<<19)
+#define	FPOVFL	(1<<18)
+#define	FPZDIV	(1<<17)
+#define	FPINVAL	(1<<16)
+#define	FPRNR	(0<<0)
+#define	FPRZ	(1<<0)
+#define	FPRPINF	(2<<0)
+#define	FPRNINF	(3<<0)
+#define	FPRMASK	(3<<0)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<4)
+#define	FPAUNFL	(1<<3)
+#define	FPAOVFL	(1<<2)
+#define	FPAZDIV	(1<<1)
+#define	FPAINVAL	(1<<0)
+union FPdbleword
+{
+	double	x;
+	struct {	/* little endian */
+		ulong lo;
+		ulong hi;
+	};
+};
+
+typedef	char*	va_list;
+#define va_start(list, start) list =\
+	(sizeof(start) < 4?\
+		(char*)((int*)&(start)+1):\
+		(char*)(&(start)+1))
+#define va_end(list)\
+	USED(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((list += 4), (mode*)list)[-4]:\
+	(sizeof(mode) == 2)?\
+		((list += 4), (mode*)list)[-2]:\
+		((list += sizeof(mode)), (mode*)list)[-1])
diff --git a/arm/include/ureg.h b/arm/include/ureg.h
new file mode 100644
index 000000000..af6653a56
--- /dev/null
+++ b/arm/include/ureg.h
@@ -0,0 +1,26 @@
+typedef struct Ureg {
+	ulong	r0;
+	ulong	r1;
+	ulong	r2;
+	ulong	r3;
+	ulong	r4;
+	ulong	r5;
+	ulong	r6;
+	ulong	r7;
+	ulong	r8;
+	ulong	r9;
+	ulong	r10;
+	ulong	r11;
+	ulong	r12;	/* sb */
+	union {
+		ulong	r13;
+		ulong	sp;
+	};
+	union {
+		ulong	r14;
+		ulong	link;
+	};
+	ulong	type;	/* of exception */
+	ulong	psr;
+	ulong	pc;	/* interrupted addr */
+} Ureg;
diff --git a/arm/mkfile b/arm/mkfile
new file mode 100644
index 000000000..e9f41c0a7
--- /dev/null
+++ b/arm/mkfile
@@ -0,0 +1,6 @@
+</sys/src/mkfile.proto
+
+CC=5c
+LD=5l
+O=5
+AS=5a
diff --git a/mips/include/ape/float.h b/mips/include/ape/float.h
new file mode 100644
index 000000000..c0992af79
--- /dev/null
+++ b/mips/include/ape/float.h
@@ -0,0 +1,73 @@
+#ifndef __FLOAT
+#define __FLOAT
+/* IEEE, default rounding */
+
+#define FLT_ROUNDS	1
+#define FLT_RADIX	2
+
+#define FLT_DIG		6
+#define FLT_EPSILON	1.19209290e-07
+#define FLT_MANT_DIG	24
+#define FLT_MAX		3.40282347e+38
+#define FLT_MAX_10_EXP	38
+#define FLT_MAX_EXP	128
+#define FLT_MIN		1.17549435e-38
+#define FLT_MIN_10_EXP	-37
+#define FLT_MIN_EXP	-125
+
+#define DBL_DIG		15
+#define DBL_EPSILON	2.2204460492503131e-16
+#define DBL_MANT_DIG	53
+#define DBL_MAX		1.797693134862315708145e+308
+#define DBL_MAX_10_EXP	308
+#define DBL_MAX_EXP	1024
+#define DBL_MIN		2.225073858507201383090233e-308
+#define DBL_MIN_10_EXP	-307
+#define DBL_MIN_EXP	-1021
+#define LDBL_MANT_DIG	DBL_MANT_DIG
+#define LDBL_EPSILON	DBL_EPSILON
+#define LDBL_DIG	DBL_DIG
+#define LDBL_MIN_EXP	DBL_MIN_EXP
+#define LDBL_MIN	DBL_MIN
+#define LDBL_MIN_10_EXP	DBL_MIN_10_EXP
+#define LDBL_MAX_EXP	DBL_MAX_EXP
+#define LDBL_MAX	DBL_MAX
+#define LDBL_MAX_10_EXP	DBL_MAX_10_EXP
+
+typedef 	union FPdbleword FPdbleword;
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		long hi;
+		long lo;
+	};
+};
+
+#ifdef _RESEARCH_SOURCE
+/* define stuff needed for floating conversion */
+#define IEEE_MC68k	1
+#define Sudden_Underflow 1
+#endif
+#ifdef _PLAN9_SOURCE
+/* FCR */
+#define	FPINEX	(1<<7)
+#define	FPOVFL	(1<<9)
+#define	FPUNFL	(1<<8)
+#define	FPZDIV	(1<<10)
+#define	FPRNR	(0<<0)
+#define	FPRZ	(1<<0)
+#define	FPRPINF	(2<<0)
+#define	FPRNINF	(3<<0)
+#define	FPRMASK	(3<<0)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<2)
+#define	FPAOVFL	(1<<4)
+#define	FPAUNFL	(1<<3)
+#define	FPAZDIV	(1<<5)
+#endif
+#endif /* __FLOAT */
diff --git a/mips/include/ape/math.h b/mips/include/ape/math.h
new file mode 100644
index 000000000..5fa374801
--- /dev/null
+++ b/mips/include/ape/math.h
@@ -0,0 +1,77 @@
+#ifndef __MATH
+#define __MATH
+#pragma lib "/$M/lib/ape/libap.a"
+
+/* a HUGE_VAL appropriate for IEEE double-precision */
+/* the correct value, 1.797693134862316e+308, causes a ken overflow */
+#define HUGE_VAL 1.79769313486231e+308
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern double acos(double);
+extern double asin(double);
+extern double atan(double);
+extern double atan2(double, double);
+extern double cos(double);
+extern double sin(double);
+extern double tan(double);
+extern double cosh(double);
+extern double sinh(double);
+extern double tanh(double);
+extern double exp(double);
+extern double frexp(double, int *);
+extern double ldexp(double, int);
+extern double log(double);
+extern double log10(double);
+extern double modf(double, double *);
+extern double pow(double, double);
+extern double sqrt(double);
+extern double ceil(double);
+extern double fabs(double);
+extern double floor(double);
+extern double fmod(double, double);
+extern double NaN(void);
+extern int isNaN(double);
+extern double Inf(int);
+extern int isInf(double, int);
+
+#ifdef _RESEARCH_SOURCE
+/* does >> treat left operand as unsigned ? */
+#define Unsigned_Shifts 1
+#define	M_E		2.7182818284590452354	/* e */
+#define	M_LOG2E		1.4426950408889634074	/* log 2e */
+#define	M_LOG10E	0.43429448190325182765	/* log 10e */
+#define	M_LN2		0.69314718055994530942	/* log e2 */
+#define	M_LN10		2.30258509299404568402	/* log e10 */
+#define	M_PI		3.14159265358979323846	/* pi */
+#define	M_PI_2		1.57079632679489661923	/* pi/2 */
+#define	M_PI_4		0.78539816339744830962	/* pi/4 */
+#define	M_1_PI		0.31830988618379067154	/* 1/pi */
+#define	M_2_PI		0.63661977236758134308	/* 2/pi */
+#define	M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
+#define	M_SQRT2		1.41421356237309504880	/* sqrt(2) */
+#define	M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
+
+extern double hypot(double, double);
+extern double erf(double);
+extern double erfc(double);
+extern double j0(double);
+extern double y0(double);
+extern double j1(double);
+extern double y1(double);
+extern double jn(int, double);
+extern double yn(int, double);
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#define isnan(x) isNaN(x)
+#define isinf(x) isInf(x)
+
+#endif /* __MATH */
diff --git a/mips/include/ape/stdarg.h b/mips/include/ape/stdarg.h
new file mode 100644
index 000000000..b7e2282e6
--- /dev/null
+++ b/mips/include/ape/stdarg.h
@@ -0,0 +1,11 @@
+#ifndef __STDARG
+#define __STDARG
+
+typedef char *va_list;
+
+#define va_start(list, start) list = (char *)(&(start)+1)
+#define va_end(list)
+#define va_arg(list, mode) (sizeof(mode)==1 ? ((mode *) (list += 4))[-4] : \
+sizeof(mode)==2 ? ((mode *) (list += 4))[-2] : ((mode *) (list += sizeof(mode)))[-1])
+
+#endif /* __STDARG */
diff --git a/mips/include/ape/ureg.h b/mips/include/ape/ureg.h
new file mode 100644
index 000000000..702bd1f5d
--- /dev/null
+++ b/mips/include/ape/ureg.h
@@ -0,0 +1,52 @@
+#ifndef __UREG_H
+#define __UREG_H
+#if !defined(_PLAN9_SOURCE)
+    This header file is an extension to ANSI/POSIX
+#endif
+
+struct Ureg
+{
+	unsigned long	status;
+	unsigned long	pc;
+	union{
+		unsigned long	sp;		/* r29 */
+		unsigned long	usp;		/* r29 */
+	};
+	unsigned long	cause;
+	unsigned long	badvaddr;
+	unsigned long	tlbvirt;
+	unsigned long	hi;
+	unsigned long	lo;
+	unsigned long	r31;
+	unsigned long	r30;
+	unsigned long	r28;
+	unsigned long	r27;		/* unused */
+	unsigned long	r26;		/* unused */
+	unsigned long	r25;
+	unsigned long	r24;
+	unsigned long	r23;
+	unsigned long	r22;
+	unsigned long	r21;
+	unsigned long	r20;
+	unsigned long	r19;
+	unsigned long	r18;
+	unsigned long	r17;
+	unsigned long	r16;
+	unsigned long	r15;
+	unsigned long	r14;
+	unsigned long	r13;
+	unsigned long	r12;
+	unsigned long	r11;
+	unsigned long	r10;
+	unsigned long	r9;
+	unsigned long	r8;
+	unsigned long	r7;
+	unsigned long	r6;
+	unsigned long	r5;
+	unsigned long	r4;
+	unsigned long	r3;
+	unsigned long	r2;
+	unsigned long	r1;
+};
+
+#endif
diff --git a/mips/include/mips2ureg.h b/mips/include/mips2ureg.h
new file mode 100644
index 000000000..2497c7fe0
--- /dev/null
+++ b/mips/include/mips2ureg.h
@@ -0,0 +1,53 @@
+struct Ureg
+{
+	ulong	status;
+	long	pc;
+	union
+	{
+		struct
+		{
+			long	sp;	/* r29 */
+			ulong	cause;
+		};
+		struct
+		{
+			long	usp;	/* r29 */
+			ulong	ucause;
+		};
+	};
+	ulong	badvaddr;
+	ulong	tlbvirt;
+
+	long	hhi;	long	hi;
+	long	hlo;	long	lo;
+	long	hr31;	long	r31;
+	long	hr30;	long	r30;
+	long	hr28;	long	r28;
+	long	hr27;	long	r27;
+	long	hr26;	long	r26;
+	long	hr25;	long	r25;
+	long	hr24;	long	r24;
+	long	hr23;	long	r23;
+	long	hr22;	long	r22;
+	long	hr21;	long	r21;
+	long	hr20;	long	r20;
+	long	hr19;	long	r19;
+	long	hr18;	long	r18;
+	long	hr17;	long	r17;
+	long	hr16;	long	r16;
+	long	hr15;	long	r15;
+	long	hr14;	long	r14;
+	long	hr13;	long	r13;
+	long	hr12;	long	r12;
+	long	hr11;	long	r11;
+	long	hr10;	long	r10;
+	long	hr9;	long	r9;
+	long	hr8;	long	r8;
+	long	hr7;	long	r7;
+	long	hr6;	long	r6;
+	long	hr5;	long	r5;
+	long	hr4;	long	r4;
+	long	hr3;	long	r3;
+	long	hr2;	long	r2;
+	long	hr1;	long	r1;
+};
diff --git a/mips/include/u.h b/mips/include/u.h
new file mode 100644
index 000000000..08f7832b7
--- /dev/null
+++ b/mips/include/u.h
@@ -0,0 +1,66 @@
+#define nil		((void*)0)
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+typedef	unsigned long	ulong;
+typedef	unsigned int	uint;
+typedef	signed char	schar;
+typedef	long long	vlong;
+typedef	unsigned long long uvlong;
+typedef unsigned long	uintptr;
+typedef unsigned long	usize;
+typedef	ushort		Rune;
+typedef 	union FPdbleword FPdbleword;
+typedef long	jmp_buf[2];
+#define	JMPBUFSP	0
+#define	JMPBUFPC	1
+#define	JMPBUFDPC	0
+typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
+typedef unsigned char u8int;
+typedef unsigned short u16int;
+typedef unsigned int	u32int;
+typedef unsigned long long u64int;
+
+/* FCR */
+#define	FPINEX	(1<<7)
+#define	FPUNFL	(1<<8)
+#define	FPOVFL	(1<<9)
+#define	FPZDIV	(1<<10)
+#define	FPINVAL	(1<<11)
+#define	FPRNR	(0<<0)
+#define	FPRZ	(1<<0)
+#define	FPRPINF	(2<<0)
+#define	FPRNINF	(3<<0)
+#define	FPRMASK	(3<<0)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<2)
+#define	FPAOVFL	(1<<4)
+#define	FPAUNFL	(1<<3)
+#define	FPAZDIV	(1<<5)
+#define	FPAINVAL	(1<<6)
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		ulong hi;
+		ulong lo;
+	};
+};
+
+/* stdarg */
+typedef	char*	va_list;
+#define va_start(list, start) list =\
+	(sizeof(start) < 4?\
+		(char*)((int*)&(start)+1):\
+		(char*)(&(start)+1))
+#define va_end(list)\
+	USED(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((list += 4), (mode*)list)[-1]:\
+	(sizeof(mode) == 2)?\
+		((list += 4), (mode*)list)[-1]:\
+		((list += sizeof(mode)), (mode*)list)[-1])
diff --git a/mips/include/ureg.h b/mips/include/ureg.h
new file mode 100644
index 000000000..32cbfb3fc
--- /dev/null
+++ b/mips/include/ureg.h
@@ -0,0 +1,44 @@
+struct Ureg
+{
+	ulong	status;
+	ulong	pc;
+	union{
+		ulong	sp;		/* r29 */
+		ulong	usp;		/* r29 */
+	};
+	ulong	cause;
+	ulong	badvaddr;
+	ulong	tlbvirt;
+	ulong	hi;
+	ulong	lo;
+	ulong	r31;
+	ulong	r30;
+	ulong	r28;
+	ulong	r27;		/* unused */
+	ulong	r26;		/* unused */
+	ulong	r25;
+	ulong	r24;
+	ulong	r23;
+	ulong	r22;
+	ulong	r21;
+	ulong	r20;
+	ulong	r19;
+	ulong	r18;
+	ulong	r17;
+	ulong	r16;
+	ulong	r15;
+	ulong	r14;
+	ulong	r13;
+	ulong	r12;
+	ulong	r11;
+	ulong	r10;
+	ulong	r9;
+	ulong	r8;
+	ulong	r7;
+	ulong	r6;
+	ulong	r5;
+	ulong	r4;
+	ulong	r3;
+	ulong	r2;
+	ulong	r1;
+};
diff --git a/mips/mkfile b/mips/mkfile
new file mode 100644
index 000000000..663a2737d
--- /dev/null
+++ b/mips/mkfile
@@ -0,0 +1,6 @@
+</sys/src/mkfile.proto
+
+CC=vc
+LD=vl
+O=v
+AS=va
diff --git a/power/include/ape/float.h b/power/include/ape/float.h
new file mode 100644
index 000000000..c0992af79
--- /dev/null
+++ b/power/include/ape/float.h
@@ -0,0 +1,73 @@
+#ifndef __FLOAT
+#define __FLOAT
+/* IEEE, default rounding */
+
+#define FLT_ROUNDS	1
+#define FLT_RADIX	2
+
+#define FLT_DIG		6
+#define FLT_EPSILON	1.19209290e-07
+#define FLT_MANT_DIG	24
+#define FLT_MAX		3.40282347e+38
+#define FLT_MAX_10_EXP	38
+#define FLT_MAX_EXP	128
+#define FLT_MIN		1.17549435e-38
+#define FLT_MIN_10_EXP	-37
+#define FLT_MIN_EXP	-125
+
+#define DBL_DIG		15
+#define DBL_EPSILON	2.2204460492503131e-16
+#define DBL_MANT_DIG	53
+#define DBL_MAX		1.797693134862315708145e+308
+#define DBL_MAX_10_EXP	308
+#define DBL_MAX_EXP	1024
+#define DBL_MIN		2.225073858507201383090233e-308
+#define DBL_MIN_10_EXP	-307
+#define DBL_MIN_EXP	-1021
+#define LDBL_MANT_DIG	DBL_MANT_DIG
+#define LDBL_EPSILON	DBL_EPSILON
+#define LDBL_DIG	DBL_DIG
+#define LDBL_MIN_EXP	DBL_MIN_EXP
+#define LDBL_MIN	DBL_MIN
+#define LDBL_MIN_10_EXP	DBL_MIN_10_EXP
+#define LDBL_MAX_EXP	DBL_MAX_EXP
+#define LDBL_MAX	DBL_MAX
+#define LDBL_MAX_10_EXP	DBL_MAX_10_EXP
+
+typedef 	union FPdbleword FPdbleword;
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		long hi;
+		long lo;
+	};
+};
+
+#ifdef _RESEARCH_SOURCE
+/* define stuff needed for floating conversion */
+#define IEEE_MC68k	1
+#define Sudden_Underflow 1
+#endif
+#ifdef _PLAN9_SOURCE
+/* FCR */
+#define	FPINEX	(1<<7)
+#define	FPOVFL	(1<<9)
+#define	FPUNFL	(1<<8)
+#define	FPZDIV	(1<<10)
+#define	FPRNR	(0<<0)
+#define	FPRZ	(1<<0)
+#define	FPRPINF	(2<<0)
+#define	FPRNINF	(3<<0)
+#define	FPRMASK	(3<<0)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<2)
+#define	FPAOVFL	(1<<4)
+#define	FPAUNFL	(1<<3)
+#define	FPAZDIV	(1<<5)
+#endif
+#endif /* __FLOAT */
diff --git a/power/include/ape/math.h b/power/include/ape/math.h
new file mode 100644
index 000000000..5fa374801
--- /dev/null
+++ b/power/include/ape/math.h
@@ -0,0 +1,77 @@
+#ifndef __MATH
+#define __MATH
+#pragma lib "/$M/lib/ape/libap.a"
+
+/* a HUGE_VAL appropriate for IEEE double-precision */
+/* the correct value, 1.797693134862316e+308, causes a ken overflow */
+#define HUGE_VAL 1.79769313486231e+308
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern double acos(double);
+extern double asin(double);
+extern double atan(double);
+extern double atan2(double, double);
+extern double cos(double);
+extern double sin(double);
+extern double tan(double);
+extern double cosh(double);
+extern double sinh(double);
+extern double tanh(double);
+extern double exp(double);
+extern double frexp(double, int *);
+extern double ldexp(double, int);
+extern double log(double);
+extern double log10(double);
+extern double modf(double, double *);
+extern double pow(double, double);
+extern double sqrt(double);
+extern double ceil(double);
+extern double fabs(double);
+extern double floor(double);
+extern double fmod(double, double);
+extern double NaN(void);
+extern int isNaN(double);
+extern double Inf(int);
+extern int isInf(double, int);
+
+#ifdef _RESEARCH_SOURCE
+/* does >> treat left operand as unsigned ? */
+#define Unsigned_Shifts 1
+#define	M_E		2.7182818284590452354	/* e */
+#define	M_LOG2E		1.4426950408889634074	/* log 2e */
+#define	M_LOG10E	0.43429448190325182765	/* log 10e */
+#define	M_LN2		0.69314718055994530942	/* log e2 */
+#define	M_LN10		2.30258509299404568402	/* log e10 */
+#define	M_PI		3.14159265358979323846	/* pi */
+#define	M_PI_2		1.57079632679489661923	/* pi/2 */
+#define	M_PI_4		0.78539816339744830962	/* pi/4 */
+#define	M_1_PI		0.31830988618379067154	/* 1/pi */
+#define	M_2_PI		0.63661977236758134308	/* 2/pi */
+#define	M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
+#define	M_SQRT2		1.41421356237309504880	/* sqrt(2) */
+#define	M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
+
+extern double hypot(double, double);
+extern double erf(double);
+extern double erfc(double);
+extern double j0(double);
+extern double y0(double);
+extern double j1(double);
+extern double y1(double);
+extern double jn(int, double);
+extern double yn(int, double);
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#define isnan(x) isNaN(x)
+#define isinf(x) isInf(x)
+
+#endif /* __MATH */
diff --git a/power/include/ape/stdarg.h b/power/include/ape/stdarg.h
new file mode 100644
index 000000000..b7e2282e6
--- /dev/null
+++ b/power/include/ape/stdarg.h
@@ -0,0 +1,11 @@
+#ifndef __STDARG
+#define __STDARG
+
+typedef char *va_list;
+
+#define va_start(list, start) list = (char *)(&(start)+1)
+#define va_end(list)
+#define va_arg(list, mode) (sizeof(mode)==1 ? ((mode *) (list += 4))[-4] : \
+sizeof(mode)==2 ? ((mode *) (list += 4))[-2] : ((mode *) (list += sizeof(mode)))[-1])
+
+#endif /* __STDARG */
diff --git a/power/include/ape/ureg.h b/power/include/ape/ureg.h
new file mode 100644
index 000000000..bd48db70f
--- /dev/null
+++ b/power/include/ape/ureg.h
@@ -0,0 +1,50 @@
+#ifndef __UREG_H
+#define __UREG_H
+#if !defined(_PLAN9_SOURCE)
+    This header file is an extension to ANSI/POSIX
+#endif
+
+struct Ureg
+{	unsigned long	cause;
+	union { unsigned long	srr1; unsigned long status;};
+	unsigned long	pc;	/* SRR0 */
+	unsigned long	pad;
+	unsigned long	lr;
+	unsigned long	cr;
+	unsigned long	xer;
+	unsigned long	ctr;
+	unsigned long	r0;
+	union{ unsigned long r1;	unsigned long	sp;	unsigned long	usp; };
+	unsigned long	r2;
+	unsigned long	r3;
+	unsigned long	r4;
+	unsigned long	r5;
+	unsigned long	r6;
+	unsigned long	r7;
+	unsigned long	r8;
+	unsigned long	r9;
+	unsigned long	r10;
+	unsigned long	r11;
+	unsigned long	r12;
+	unsigned long	r13;
+	unsigned long	r14;
+	unsigned long	r15;
+	unsigned long	r16;
+	unsigned long	r17;
+	unsigned long	r18;
+	unsigned long	r19;
+	unsigned long	r20;
+	unsigned long	r21;
+	unsigned long	r22;
+	unsigned long	r23;
+	unsigned long	r24;
+	unsigned long	r25;
+	unsigned long	r26;
+	unsigned long	r27;
+	unsigned long	r28;
+	unsigned long	r29;
+	unsigned long	r30;
+	unsigned long	r31;
+};
+
+#endif
diff --git a/power/include/u.h b/power/include/u.h
new file mode 100644
index 000000000..f84422ccf
--- /dev/null
+++ b/power/include/u.h
@@ -0,0 +1,85 @@
+#define nil		((void*)0)
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+typedef	unsigned long	ulong;
+typedef	unsigned int	uint;
+typedef	  signed char	schar;
+typedef	long long	vlong;
+typedef	unsigned long long uvlong;
+typedef unsigned long	uintptr;
+typedef unsigned long	usize;
+typedef	ushort		Rune;
+typedef union FPdbleword FPdbleword;
+typedef long		jmp_buf[2];
+#define	JMPBUFSP	0
+#define	JMPBUFPC	1
+#define	JMPBUFDPC	0
+typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
+typedef unsigned char	u8int;
+typedef unsigned short	u16int;
+typedef unsigned int	u32int;
+typedef unsigned long long u64int;
+
+/* FPSCR */
+#define	FPSFX	(1<<31)	/* exception summary (sticky) */
+#define	FPSEX	(1<<30)	/* enabled exception summary */
+#define	FPSVX	(1<<29)	/* invalid operation exception summary */
+#define	FPSOX	(1<<28)	/* overflow exception OX (sticky) */
+#define	FPSUX	(1<<27)	/* underflow exception UX (sticky) */
+#define	FPSZX	(1<<26)	/* zero divide exception ZX (sticky) */
+#define	FPSXX	(1<<25)	/* inexact exception XX (sticky) */
+#define	FPSVXSNAN (1<<24)	/* invalid operation exception for SNaN (sticky) */
+#define	FPSVXISI (1<<23)	/* invalid operation exception for ∞-∞ (sticky) */
+#define	FPSVXIDI (1<<22)	/* invalid operation exception for ∞/∞ (sticky) */
+#define	FPSVXZDZ (1<<21)	/* invalid operation exception for 0/0 (sticky) */
+#define	FPSVXIMZ (1<<20)	/* invalid operation exception for ∞*0 (sticky) */
+#define	FPSVXVC	(1<<19)	/* invalid operation exception for invalid compare (sticky) */
+#define	FPSFR	(1<<18)	/* fraction rounded */
+#define	FPSFI	(1<<17)	/* fraction inexact */
+#define	FPSFPRF	(1<<16)	/* floating point result class */
+#define	FPSFPCC	(0xF<<12)	/* <, >, =, unordered */
+#define	FPVXCVI	(1<<8)	/* enable exception for invalid integer convert (sticky) */
+#define	FPVE	(1<<7)	/* invalid operation exception enable */
+#define	FPOVFL	(1<<6)	/* enable overflow exceptions */
+#define	FPUNFL	(1<<5)	/* enable underflow */
+#define	FPZDIV	(1<<4)	/* enable zero divide */
+#define	FPINEX	(1<<3)	/* enable inexact exceptions */
+#define	FPRMASK	(3<<0)	/* rounding mode */
+#define	FPRNR	(0<<0)
+#define	FPRZ	(1<<0)
+#define	FPRPINF	(2<<0)
+#define	FPRNINF	(3<<0)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+#define	FPINVAL	FPVE
+
+#define	FPAOVFL	FPSOX
+#define	FPAINEX	FPSXX
+#define	FPAUNFL	FPSUX
+#define	FPAZDIV	FPSZX
+#define	FPAINVAL	FPSVX
+
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		ulong hi;
+		ulong lo;
+	};
+};
+
+typedef	char*	va_list;
+#define va_start(list, start) list =\
+	(sizeof(start) < 4?\
+		(char*)((int*)&(start)+1):\
+		(char*)(&(start)+1))
+#define va_end(list)\
+	USED(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((list += 4), (mode*)list)[-1]:\
+	(sizeof(mode) == 2)?\
+		((list += 4), (mode*)list)[-1]:\
+		((list += sizeof(mode)), (mode*)list)[-1])
diff --git a/power/include/ureg.h b/power/include/ureg.h
new file mode 100644
index 000000000..06bb317bf
--- /dev/null
+++ b/power/include/ureg.h
@@ -0,0 +1,51 @@
+struct Ureg
+{
+/*  0*/	ulong	cause;
+/*  4*/	union { ulong	srr1; ulong status;};
+/*  8*/	ulong	pc;	/* SRR0 */
+/* 12*/	ulong	pad;
+/* 16*/	ulong	lr;
+/* 20*/	ulong	cr;
+/* 24*/	ulong	xer;
+/* 28*/	ulong	ctr;
+/* 32*/	ulong	r0;
+/* 36*/	union{ ulong r1;	ulong	sp;	ulong	usp; };
+/* 40*/	ulong	r2;
+/* 44*/	ulong	r3;
+/* 48*/	ulong	r4;
+/* 52*/	ulong	r5;
+/* 56*/	ulong	r6;
+/* 60*/	ulong	r7;
+/* 64*/	ulong	r8;
+/* 68*/	ulong	r9;
+/* 72*/	ulong	r10;
+/* 76*/	ulong	r11;
+/* 80*/	ulong	r12;
+/* 84*/	ulong	r13;
+/* 88*/	ulong	r14;
+/* 92*/	ulong	r15;
+/* 96*/	ulong	r16;
+/*100*/	ulong	r17;
+/*104*/	ulong	r18;
+/*108*/	ulong	r19;
+/*112*/	ulong	r20;
+/*116*/	ulong	r21;
+/*120*/	ulong	r22;
+/*124*/	ulong	r23;
+/*128*/	ulong	r24;
+/*132*/	ulong	r25;
+/*136*/	ulong	r26;
+/*140*/	ulong	r27;
+/*144*/	ulong	r28;
+/*148*/	ulong	r29;
+/*152*/	ulong	r30;
+/*156*/	ulong	r31;
+/*160*/	ulong	dcmp;
+/*164*/	ulong	icmp;
+/*168*/	ulong	dmiss;
+/*172*/	ulong	imiss;
+/*176*/	ulong	hash1;
+/*180*/	ulong	hash2;
+/*184*/	ulong	dar;
+/*188*/	ulong	dsisr;
+};
diff --git a/power/mkfile b/power/mkfile
new file mode 100644
index 000000000..d5cc0eef2
--- /dev/null
+++ b/power/mkfile
@@ -0,0 +1,6 @@
+</sys/src/mkfile.proto
+
+CC=qc
+LD=ql
+O=q
+AS=qa
diff --git a/power64/include/u.h b/power64/include/u.h
new file mode 100644
index 000000000..d9dbf50be
--- /dev/null
+++ b/power64/include/u.h
@@ -0,0 +1,87 @@
+#define nil		((void*)0)
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+typedef	unsigned long	ulong;
+typedef	unsigned int	uint;
+typedef	signed char	schar;
+typedef	long long	vlong;
+typedef	unsigned long long uvlong;
+typedef unsigned long long uintptr;
+typedef unsigned long	usize;
+typedef	ushort		Rune;
+typedef 	union FPdbleword FPdbleword;
+typedef uintptr	jmp_buf[2];
+#define	JMPBUFSP	0
+#define	JMPBUFPC	1
+#define	JMPBUFDPC	0
+typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
+typedef unsigned char u8int;
+typedef unsigned short u16int;
+typedef unsigned int	u32int;
+typedef unsigned long long u64int;
+
+/* FPSCR */
+#define	FPSFX	(1<<31)	/* exception summary (sticky) */
+#define	FPSEX	(1<<30)	/* enabled exception summary */
+#define	FPSVX	(1<<29)	/* invalid operation exception summary */
+#define	FPSOX	(1<<28)	/* overflow exception OX (sticky) */
+#define	FPSUX	(1<<27)	/* underflow exception UX (sticky) */
+#define	FPSZX	(1<<26)	/* zero divide exception ZX (sticky) */
+#define	FPSXX	(1<<25)	/* inexact exception XX (sticky) */
+#define	FPSVXSNAN (1<<24)	/* invalid operation exception for SNaN (sticky) */
+#define	FPSVXISI	(1<<23)	/* invalid operation exception for ∞-∞ (sticky) */
+#define	FPSVXIDI	(1<<22)	/* invalid operation exception for ∞/∞ (sticky) */
+#define	FPSVXZDZ (1<<21)	/* invalid operation exception for 0/0 (sticky) */
+#define	FPSVXIMZ	(1<<20)	/* invalid operation exception for ∞*0 (sticky) */
+#define	FPSVXVC	(1<<19)	/* invalid operation exception for invalid compare (sticky) */
+#define	FPSFR	(1<<18)	/* fraction rounded */
+#define	FPSFI	(1<<17)	/* fraction inexact */
+#define	FPSFPRF	(1<<16)	/* floating point result class */
+#define	FPSFPCC	(0xF<<12)	/* <, >, =, unordered */
+#define	FPVXCVI	(1<<8)	/* enable exception for invalid integer convert (sticky) */
+#define	FPVE	(1<<7)	/* invalid operation exception enable */
+#define	FPOVFL	(1<<6)	/* enable overflow exceptions */
+#define	FPUNFL	(1<<5)	/* enable underflow */
+#define	FPZDIV	(1<<4)	/* enable zero divide */
+#define	FPINEX	(1<<3)	/* enable inexact exceptions */
+#define	FPRMASK	(3<<0)	/* rounding mode */
+#define	FPRNR	(0<<0)
+#define	FPRZ	(1<<0)
+#define	FPRPINF	(2<<0)
+#define	FPRNINF	(3<<0)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+#define	FPINVAL	FPVE
+
+#define	FPAOVFL	FPSOX
+#define	FPAINEX	FPSXX
+#define	FPAUNFL	FPSUX
+#define	FPAZDIV	FPSZX
+#define	FPAINVAL	FPSVX
+
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		ulong hi;
+		ulong lo;
+	};
+};
+
+typedef	char*	va_list;
+#define va_start(list, start) list =\
+	(sizeof(start) < 8?\
+		(char*)((vlong*)&(start)+1):\
+		(char*)(&(start)+1))
+#define va_end(list)\
+	USED(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((mode*)(list += 8))[-1]:\
+	(sizeof(mode) == 2)?\
+		((mode*)(list += 8))[-1]:\
+	(sizeof(mode) == 4)?\
+		((mode*)(list += 8))[-1]:\
+		((mode*)(list += sizeof(mode)))[-1])
diff --git a/power64/include/ureg.h b/power64/include/ureg.h
new file mode 100644
index 000000000..676f5a570
--- /dev/null
+++ b/power64/include/ureg.h
@@ -0,0 +1,44 @@
+struct Ureg
+{
+/*  0*/	u64int	cause;	/* trap or interrupt vector */
+/*  8*/	u64int	msr; /* SRR1 */
+/* 16*/	u64int	pc;	/* SRR0 */
+/* 24*/	u64int	unused;
+/* 32*/	u64int	lr;
+/* 36*/	u32int	pad;
+/* 40*/	u32int	cr;
+/* 48*/	u64int	xer;
+/* 56*/	u64int	ctr;
+/* 64*/	u64int	r0;
+/* 72*/	union{ u64int r1;	u64int	sp;	u64int	usp; };
+/* 80*/	u64int	r2;
+/* 88*/	u64int	r3;
+/* 96*/	u64int	r4;
+/*104*/	u64int	r5;
+/*112*/	u64int	r6;
+/*120*/	u64int	r7;
+/*128*/	u64int	r8;
+/*136*/	u64int	r9;
+/*144*/	u64int	r10;
+/*152*/	u64int	r11;
+/*160*/	u64int	r12;
+/*168*/	u64int	r13;
+/*176*/	u64int	r14;
+/*184*/	u64int	r15;
+/*192*/	u64int	r16;
+/*200*/	u64int	r17;
+/*208*/	u64int	r18;
+/*216*/	u64int	r19;
+/*224*/	u64int	r20;
+/*232*/	u64int	r21;
+/*240*/	u64int	r22;
+/*248*/	u64int	r23;
+/*256*/	u64int	r24;
+/*264*/	u64int	r25;
+/*272*/	u64int	r26;
+/*280*/	u64int	r27;
+/*288*/	u64int	r28;
+/*296*/	u64int	r29;
+/*304*/	u64int	r30;
+/*312*/	u64int	r31;
+};
diff --git a/power64/mkfile b/power64/mkfile
new file mode 100644
index 000000000..4cadaebc7
--- /dev/null
+++ b/power64/mkfile
@@ -0,0 +1,6 @@
+</sys/src/mkfile.proto
+
+CC=9c
+LD=9l
+O=9
+AS=9a
diff --git a/sparc/include/ape/float.h b/sparc/include/ape/float.h
new file mode 100644
index 000000000..f0ce62f86
--- /dev/null
+++ b/sparc/include/ape/float.h
@@ -0,0 +1,73 @@
+#ifndef __FLOAT
+#define __FLOAT
+/* IEEE, default rounding */
+
+#define FLT_ROUNDS	1
+#define FLT_RADIX	2
+
+#define FLT_DIG		6
+#define FLT_EPSILON	1.19209290e-07
+#define FLT_MANT_DIG	24
+#define FLT_MAX		3.40282347e+38
+#define FLT_MAX_10_EXP	38
+#define FLT_MAX_EXP	128
+#define FLT_MIN		1.17549435e-38
+#define FLT_MIN_10_EXP	-37
+#define FLT_MIN_EXP	-125
+
+#define DBL_DIG		15
+#define DBL_EPSILON	2.2204460492503131e-16
+#define DBL_MANT_DIG	53
+#define DBL_MAX		1.797693134862315708145e+308
+#define DBL_MAX_10_EXP	308
+#define DBL_MAX_EXP	1024
+#define DBL_MIN		2.225073858507201383090233e-308
+#define DBL_MIN_10_EXP	-307
+#define DBL_MIN_EXP	-1021
+#define LDBL_MANT_DIG	DBL_MANT_DIG
+#define LDBL_EPSILON	DBL_EPSILON
+#define LDBL_DIG	DBL_DIG
+#define LDBL_MIN_EXP	DBL_MIN_EXP
+#define LDBL_MIN	DBL_MIN
+#define LDBL_MIN_10_EXP	DBL_MIN_10_EXP
+#define LDBL_MAX_EXP	DBL_MAX_EXP
+#define LDBL_MAX	DBL_MAX
+#define LDBL_MAX_10_EXP	DBL_MAX_10_EXP
+
+typedef 	union FPdbleword FPdbleword;
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		long hi;
+		long lo;
+	};
+};
+
+#ifdef _RESEARCH_SOURCE
+/* define order of longs in IEEE double: little endian */
+#define IEEE_MC68k	1
+#define Sudden_Underflow 1
+#endif
+#ifdef _PLAN9_SOURCE
+/* FCR */
+#define	FPINEX	(1<<23)
+#define	FPOVFL	(1<<26)
+#define	FPUNFL	(1<<25)
+#define	FPZDIV	(1<<24)
+#define	FPRNR	(0<<30)
+#define	FPRZ	(1<<30)
+#define	FPRPINF	(2<<30)
+#define	FPRNINF	(3<<30)
+#define	FPRMASK	(3<<30)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<5)
+#define	FPAOVFL	(1<<8)
+#define	FPAUNFL	(1<<7)
+#define	FPAZDIV	(1<<6)
+#endif
+#endif /* __FLOAT */
diff --git a/sparc/include/ape/math.h b/sparc/include/ape/math.h
new file mode 100644
index 000000000..5fa374801
--- /dev/null
+++ b/sparc/include/ape/math.h
@@ -0,0 +1,77 @@
+#ifndef __MATH
+#define __MATH
+#pragma lib "/$M/lib/ape/libap.a"
+
+/* a HUGE_VAL appropriate for IEEE double-precision */
+/* the correct value, 1.797693134862316e+308, causes a ken overflow */
+#define HUGE_VAL 1.79769313486231e+308
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern double acos(double);
+extern double asin(double);
+extern double atan(double);
+extern double atan2(double, double);
+extern double cos(double);
+extern double sin(double);
+extern double tan(double);
+extern double cosh(double);
+extern double sinh(double);
+extern double tanh(double);
+extern double exp(double);
+extern double frexp(double, int *);
+extern double ldexp(double, int);
+extern double log(double);
+extern double log10(double);
+extern double modf(double, double *);
+extern double pow(double, double);
+extern double sqrt(double);
+extern double ceil(double);
+extern double fabs(double);
+extern double floor(double);
+extern double fmod(double, double);
+extern double NaN(void);
+extern int isNaN(double);
+extern double Inf(int);
+extern int isInf(double, int);
+
+#ifdef _RESEARCH_SOURCE
+/* does >> treat left operand as unsigned ? */
+#define Unsigned_Shifts 1
+#define	M_E		2.7182818284590452354	/* e */
+#define	M_LOG2E		1.4426950408889634074	/* log 2e */
+#define	M_LOG10E	0.43429448190325182765	/* log 10e */
+#define	M_LN2		0.69314718055994530942	/* log e2 */
+#define	M_LN10		2.30258509299404568402	/* log e10 */
+#define	M_PI		3.14159265358979323846	/* pi */
+#define	M_PI_2		1.57079632679489661923	/* pi/2 */
+#define	M_PI_4		0.78539816339744830962	/* pi/4 */
+#define	M_1_PI		0.31830988618379067154	/* 1/pi */
+#define	M_2_PI		0.63661977236758134308	/* 2/pi */
+#define	M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
+#define	M_SQRT2		1.41421356237309504880	/* sqrt(2) */
+#define	M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
+
+extern double hypot(double, double);
+extern double erf(double);
+extern double erfc(double);
+extern double j0(double);
+extern double y0(double);
+extern double j1(double);
+extern double y1(double);
+extern double jn(int, double);
+extern double yn(int, double);
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#define isnan(x) isNaN(x)
+#define isinf(x) isInf(x)
+
+#endif /* __MATH */
diff --git a/sparc/include/ape/stdarg.h b/sparc/include/ape/stdarg.h
new file mode 100644
index 000000000..b7e2282e6
--- /dev/null
+++ b/sparc/include/ape/stdarg.h
@@ -0,0 +1,11 @@
+#ifndef __STDARG
+#define __STDARG
+
+typedef char *va_list;
+
+#define va_start(list, start) list = (char *)(&(start)+1)
+#define va_end(list)
+#define va_arg(list, mode) (sizeof(mode)==1 ? ((mode *) (list += 4))[-4] : \
+sizeof(mode)==2 ? ((mode *) (list += 4))[-2] : ((mode *) (list += sizeof(mode)))[-1])
+
+#endif /* __STDARG */
diff --git a/sparc/include/ape/ureg.h b/sparc/include/ape/ureg.h
new file mode 100644
index 000000000..f02560f47
--- /dev/null
+++ b/sparc/include/ape/ureg.h
@@ -0,0 +1,53 @@
+#ifndef __UREG_H
+#define __UREG_H
+#if !defined(_PLAN9_SOURCE)
+    This header file is an extension to ANSI/POSIX
+#endif
+
+struct Ureg
+{
+	unsigned long	r0;			/* unnecessary; just for symmetry */
+	union{
+		unsigned long	sp;		/* r1 */
+		unsigned long	usp;		/* r1 */
+		unsigned long	r1;
+	};
+	unsigned long	r2;
+	unsigned long	r3;
+	unsigned long	r4;
+	unsigned long	r5;
+	unsigned long	r6;
+	unsigned long	r7;
+	unsigned long	r8;
+	unsigned long	r9;
+	unsigned long	r10;
+	unsigned long	r11;
+	unsigned long	r12;
+	unsigned long	r13;
+	unsigned long	r14;
+	unsigned long	r15;
+	unsigned long	r16;
+	unsigned long	r17;
+	unsigned long	r18;
+	unsigned long	r19;
+	unsigned long	r20;
+	unsigned long	r21;
+	unsigned long	r22;
+	unsigned long	r23;
+	unsigned long	r24;
+	unsigned long	r25;
+	unsigned long	r26;
+	unsigned long	r27;
+	unsigned long	r28;
+	unsigned long	r29;
+	unsigned long	r30;
+	unsigned long	r31;
+	unsigned long	y;
+	unsigned long	tbr;
+	unsigned long	psr;
+	unsigned long	npc;
+	unsigned long	pc;
+	unsigned long	pad;	/* so structure is double word aligned */
+};
+
+#endif
diff --git a/sparc/include/u.h b/sparc/include/u.h
new file mode 100644
index 000000000..cc2cb1f97
--- /dev/null
+++ b/sparc/include/u.h
@@ -0,0 +1,65 @@
+#define nil		((void*)0)
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+typedef	unsigned long	ulong;
+typedef	unsigned int	uint;
+typedef	signed char	schar;
+typedef	long long	vlong;
+typedef	unsigned long long uvlong;
+typedef unsigned long	uintptr;
+typedef unsigned long	usize;
+typedef	ushort		Rune;
+typedef 	union FPdbleword FPdbleword;
+typedef long	jmp_buf[2];
+#define	JMPBUFSP	0
+#define	JMPBUFPC	1
+#define	JMPBUFDPC	(-8)
+typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
+typedef unsigned char u8int;
+typedef unsigned short u16int;
+typedef unsigned int	u32int;
+typedef unsigned long long u64int;
+
+/* FCR */
+#define	FPINEX	(1<<23)
+#define	FPOVFL	(1<<26)
+#define	FPUNFL	(1<<25)
+#define	FPZDIV	(1<<24)
+#define	FPRNR	(0<<30)
+#define	FPRZ	(1<<30)
+#define	FPINVAL	(1<<27)
+#define	FPRPINF	(2<<30)
+#define	FPRNINF	(3<<30)
+#define	FPRMASK	(3<<30)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<5)
+#define	FPAZDIV	(1<<6)
+#define	FPAUNFL	(1<<7)
+#define	FPAOVFL	(1<<8)
+#define	FPAINVAL	(1<<9)
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		ulong hi;
+		ulong lo;
+	};
+};
+
+typedef	char*	va_list;
+#define va_start(list, start) list =\
+	(sizeof(start) < 4?\
+		(char*)((int*)&(start)+1):\
+		(char*)(&(start)+1))
+#define va_end(list)\
+	USED(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((list += 4), (mode*)list)[-1]:\
+	(sizeof(mode) == 2)?\
+		((list += 4), (mode*)list)[-1]:\
+		((list += sizeof(mode)), (mode*)list)[-1])
diff --git a/sparc/include/ureg.h b/sparc/include/ureg.h
new file mode 100644
index 000000000..8433eec95
--- /dev/null
+++ b/sparc/include/ureg.h
@@ -0,0 +1,45 @@
+struct Ureg
+{
+	ulong	r0;			/* unnecessary; just for symmetry */
+	union{
+		ulong	sp;		/* r1 */
+		ulong	usp;		/* r1 */
+		ulong	r1;
+	};
+	ulong	r2;
+	ulong	r3;
+	ulong	r4;
+	ulong	r5;
+	ulong	r6;
+	ulong	r7;
+	ulong	r8;
+	ulong	r9;
+	ulong	r10;
+	ulong	r11;
+	ulong	r12;
+	ulong	r13;
+	ulong	r14;
+	ulong	r15;
+	ulong	r16;
+	ulong	r17;
+	ulong	r18;
+	ulong	r19;
+	ulong	r20;
+	ulong	r21;
+	ulong	r22;
+	ulong	r23;
+	ulong	r24;
+	ulong	r25;
+	ulong	r26;
+	ulong	r27;
+	ulong	r28;
+	ulong	r29;
+	ulong	r30;
+	ulong	r31;
+	ulong	y;
+	ulong	tbr;
+	ulong	psr;
+	ulong	npc;
+	ulong	pc;
+	ulong	pad;	/* so structure is double word aligned */
+};
diff --git a/sparc/mkfile b/sparc/mkfile
new file mode 100644
index 000000000..3e24a1c26
--- /dev/null
+++ b/sparc/mkfile
@@ -0,0 +1,7 @@
+</sys/src/mkfile.proto
+
+CC=kc
+LD=kl
+O=k
+RL=rl
+AS=ka
diff --git a/sparc64/include/ape/float.h b/sparc64/include/ape/float.h
new file mode 100644
index 000000000..f0ce62f86
--- /dev/null
+++ b/sparc64/include/ape/float.h
@@ -0,0 +1,73 @@
+#ifndef __FLOAT
+#define __FLOAT
+/* IEEE, default rounding */
+
+#define FLT_ROUNDS	1
+#define FLT_RADIX	2
+
+#define FLT_DIG		6
+#define FLT_EPSILON	1.19209290e-07
+#define FLT_MANT_DIG	24
+#define FLT_MAX		3.40282347e+38
+#define FLT_MAX_10_EXP	38
+#define FLT_MAX_EXP	128
+#define FLT_MIN		1.17549435e-38
+#define FLT_MIN_10_EXP	-37
+#define FLT_MIN_EXP	-125
+
+#define DBL_DIG		15
+#define DBL_EPSILON	2.2204460492503131e-16
+#define DBL_MANT_DIG	53
+#define DBL_MAX		1.797693134862315708145e+308
+#define DBL_MAX_10_EXP	308
+#define DBL_MAX_EXP	1024
+#define DBL_MIN		2.225073858507201383090233e-308
+#define DBL_MIN_10_EXP	-307
+#define DBL_MIN_EXP	-1021
+#define LDBL_MANT_DIG	DBL_MANT_DIG
+#define LDBL_EPSILON	DBL_EPSILON
+#define LDBL_DIG	DBL_DIG
+#define LDBL_MIN_EXP	DBL_MIN_EXP
+#define LDBL_MIN	DBL_MIN
+#define LDBL_MIN_10_EXP	DBL_MIN_10_EXP
+#define LDBL_MAX_EXP	DBL_MAX_EXP
+#define LDBL_MAX	DBL_MAX
+#define LDBL_MAX_10_EXP	DBL_MAX_10_EXP
+
+typedef 	union FPdbleword FPdbleword;
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		long hi;
+		long lo;
+	};
+};
+
+#ifdef _RESEARCH_SOURCE
+/* define order of longs in IEEE double: little endian */
+#define IEEE_MC68k	1
+#define Sudden_Underflow 1
+#endif
+#ifdef _PLAN9_SOURCE
+/* FCR */
+#define	FPINEX	(1<<23)
+#define	FPOVFL	(1<<26)
+#define	FPUNFL	(1<<25)
+#define	FPZDIV	(1<<24)
+#define	FPRNR	(0<<30)
+#define	FPRZ	(1<<30)
+#define	FPRPINF	(2<<30)
+#define	FPRNINF	(3<<30)
+#define	FPRMASK	(3<<30)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<5)
+#define	FPAOVFL	(1<<8)
+#define	FPAUNFL	(1<<7)
+#define	FPAZDIV	(1<<6)
+#endif
+#endif /* __FLOAT */
diff --git a/sparc64/include/ape/math.h b/sparc64/include/ape/math.h
new file mode 100644
index 000000000..5fa374801
--- /dev/null
+++ b/sparc64/include/ape/math.h
@@ -0,0 +1,77 @@
+#ifndef __MATH
+#define __MATH
+#pragma lib "/$M/lib/ape/libap.a"
+
+/* a HUGE_VAL appropriate for IEEE double-precision */
+/* the correct value, 1.797693134862316e+308, causes a ken overflow */
+#define HUGE_VAL 1.79769313486231e+308
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern double acos(double);
+extern double asin(double);
+extern double atan(double);
+extern double atan2(double, double);
+extern double cos(double);
+extern double sin(double);
+extern double tan(double);
+extern double cosh(double);
+extern double sinh(double);
+extern double tanh(double);
+extern double exp(double);
+extern double frexp(double, int *);
+extern double ldexp(double, int);
+extern double log(double);
+extern double log10(double);
+extern double modf(double, double *);
+extern double pow(double, double);
+extern double sqrt(double);
+extern double ceil(double);
+extern double fabs(double);
+extern double floor(double);
+extern double fmod(double, double);
+extern double NaN(void);
+extern int isNaN(double);
+extern double Inf(int);
+extern int isInf(double, int);
+
+#ifdef _RESEARCH_SOURCE
+/* does >> treat left operand as unsigned ? */
+#define Unsigned_Shifts 1
+#define	M_E		2.7182818284590452354	/* e */
+#define	M_LOG2E		1.4426950408889634074	/* log 2e */
+#define	M_LOG10E	0.43429448190325182765	/* log 10e */
+#define	M_LN2		0.69314718055994530942	/* log e2 */
+#define	M_LN10		2.30258509299404568402	/* log e10 */
+#define	M_PI		3.14159265358979323846	/* pi */
+#define	M_PI_2		1.57079632679489661923	/* pi/2 */
+#define	M_PI_4		0.78539816339744830962	/* pi/4 */
+#define	M_1_PI		0.31830988618379067154	/* 1/pi */
+#define	M_2_PI		0.63661977236758134308	/* 2/pi */
+#define	M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
+#define	M_SQRT2		1.41421356237309504880	/* sqrt(2) */
+#define	M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
+
+extern double hypot(double, double);
+extern double erf(double);
+extern double erfc(double);
+extern double j0(double);
+extern double y0(double);
+extern double j1(double);
+extern double y1(double);
+extern double jn(int, double);
+extern double yn(int, double);
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#define isnan(x) isNaN(x)
+#define isinf(x) isInf(x)
+
+#endif /* __MATH */
diff --git a/sparc64/include/ape/stdarg.h b/sparc64/include/ape/stdarg.h
new file mode 100644
index 000000000..b7e2282e6
--- /dev/null
+++ b/sparc64/include/ape/stdarg.h
@@ -0,0 +1,11 @@
+#ifndef __STDARG
+#define __STDARG
+
+typedef char *va_list;
+
+#define va_start(list, start) list = (char *)(&(start)+1)
+#define va_end(list)
+#define va_arg(list, mode) (sizeof(mode)==1 ? ((mode *) (list += 4))[-4] : \
+sizeof(mode)==2 ? ((mode *) (list += 4))[-2] : ((mode *) (list += sizeof(mode)))[-1])
+
+#endif /* __STDARG */
diff --git a/sparc64/include/ape/ureg.h b/sparc64/include/ape/ureg.h
new file mode 100644
index 000000000..0e227e09f
--- /dev/null
+++ b/sparc64/include/ape/ureg.h
@@ -0,0 +1,53 @@
+#ifndef __UREG_H
+#define __UREG_H
+#if !defined(_PLAN9_SOURCE)
+    This header file is an extension to ANSI/POSIX
+#endif
+
+struct Ureg
+{
+	unsigned long	r0;			/* unnecessary; just for symmetry */
+	union{
+		unsigned long	sp;		/* r1 */
+		unsigned long	usp;		/* r1 */
+		unsigned long	r1;
+	};
+	unsigned long	r2;
+	unsigned long	r3;
+	unsigned long	r4;
+	unsigned long	r5;
+	unsigned long	r6;
+	unsigned long	r7;
+	unsigned long	r8;
+	unsigned long	r9;
+	unsigned long	r10;
+	unsigned long	r11;
+	unsigned long	r12;
+	unsigned long	r13;
+	unsigned long	r14;
+	unsigned long	r15;
+	unsigned long	r16;
+	unsigned long	r17;
+	unsigned long	r18;
+	unsigned long	r19;
+	unsigned long	r20;
+	unsigned long	r21;
+	unsigned long	r22;
+	unsigned long	r23;
+	unsigned long	r24;
+	unsigned long	r25;
+	unsigned long	r26;
+	unsigned long	r27;
+	unsigned long	r28;
+	unsigned long	r29;
+	unsigned long	r30;
+	unsigned long	r31;
+	unsigned long	y;
+	unsigned long	tt;
+	unsigned long	pstate;
+	unsigned long	npc;
+	unsigned long	pc;
+	unsigned long	pad;	/* so structure is double word aligned */
+};
+
+#endif
diff --git a/sparc64/include/u.h b/sparc64/include/u.h
new file mode 100644
index 000000000..cc2cb1f97
--- /dev/null
+++ b/sparc64/include/u.h
@@ -0,0 +1,65 @@
+#define nil		((void*)0)
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+typedef	unsigned long	ulong;
+typedef	unsigned int	uint;
+typedef	signed char	schar;
+typedef	long long	vlong;
+typedef	unsigned long long uvlong;
+typedef unsigned long	uintptr;
+typedef unsigned long	usize;
+typedef	ushort		Rune;
+typedef 	union FPdbleword FPdbleword;
+typedef long	jmp_buf[2];
+#define	JMPBUFSP	0
+#define	JMPBUFPC	1
+#define	JMPBUFDPC	(-8)
+typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
+typedef unsigned char u8int;
+typedef unsigned short u16int;
+typedef unsigned int	u32int;
+typedef unsigned long long u64int;
+
+/* FCR */
+#define	FPINEX	(1<<23)
+#define	FPOVFL	(1<<26)
+#define	FPUNFL	(1<<25)
+#define	FPZDIV	(1<<24)
+#define	FPRNR	(0<<30)
+#define	FPRZ	(1<<30)
+#define	FPINVAL	(1<<27)
+#define	FPRPINF	(2<<30)
+#define	FPRNINF	(3<<30)
+#define	FPRMASK	(3<<30)
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+/* FSR */
+#define	FPAINEX	(1<<5)
+#define	FPAZDIV	(1<<6)
+#define	FPAUNFL	(1<<7)
+#define	FPAOVFL	(1<<8)
+#define	FPAINVAL	(1<<9)
+union FPdbleword
+{
+	double	x;
+	struct {	/* big endian */
+		ulong hi;
+		ulong lo;
+	};
+};
+
+typedef	char*	va_list;
+#define va_start(list, start) list =\
+	(sizeof(start) < 4?\
+		(char*)((int*)&(start)+1):\
+		(char*)(&(start)+1))
+#define va_end(list)\
+	USED(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((list += 4), (mode*)list)[-1]:\
+	(sizeof(mode) == 2)?\
+		((list += 4), (mode*)list)[-1]:\
+		((list += sizeof(mode)), (mode*)list)[-1])
diff --git a/sparc64/include/ureg.h b/sparc64/include/ureg.h
new file mode 100644
index 000000000..620f94af2
--- /dev/null
+++ b/sparc64/include/ureg.h
@@ -0,0 +1,51 @@
+
+/*
+ * sparc64 registers.
+ * Currently just 32-bit registers (also somewhat compatible with
+ * the sparc32 ureg).
+ */
+struct Ureg
+{
+	ulong	r0;			/* unnecessary; just for symmetry */
+	union{
+		ulong	sp;		/* r1 */
+		ulong	usp;		/* r1 */
+		ulong	r1;
+	};
+	ulong	r2;
+	ulong	r3;
+	ulong	r4;
+	ulong	r5;
+	ulong	r6;
+	ulong	r7;
+	ulong	r8;
+	ulong	r9;
+	ulong	r10;
+	ulong	r11;
+	ulong	r12;
+	ulong	r13;
+	ulong	r14;
+	ulong	r15;
+	ulong	r16;
+	ulong	r17;
+	ulong	r18;
+	ulong	r19;
+	ulong	r20;
+	ulong	r21;
+	ulong	r22;
+	ulong	r23;
+	ulong	r24;
+	ulong	r25;
+	ulong	r26;
+	ulong	r27;
+	ulong	r28;
+	ulong	r29;
+	ulong	r30;
+	ulong	r31;
+	ulong	y;
+	ulong	tt;
+	ulong	pstate;
+	ulong	npc;
+	ulong	pc;
+	ulong	pad;	/* so structure is double word aligned */
+};
diff --git a/sparc64/mkfile b/sparc64/mkfile
new file mode 100644
index 000000000..96669764d
--- /dev/null
+++ b/sparc64/mkfile
@@ -0,0 +1,6 @@
+</sys/src/mkfile.proto
+
+CC=uc
+LD=ul
+O=u
+AS=ua