ape: initial support for arm64

arm64/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 */

arm64/include/ape/math.h

@@ -0,0 +1,79 @@
+#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 hypot(double, 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);
+extern double fmin(double, double);
+
+#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 */

arm64/include/ape/stdarg.h

@@ -0,0 +1,18 @@
+#ifndef __STDARG
+#define __STDARG
+
+typedef char *va_list;
+
+#define va_start(list, start) list = (sizeof(start)<8 ? (char *)((long long *)&(start)+1) : \
+(char *)(&(start)+1))
+#define va_end(list)
+#define va_arg(list, mode)\
+	((sizeof(mode) == 1)?\
+		((mode*)(list += 8))[-8]:\
+	(sizeof(mode) == 2)?\
+		((mode*)(list += 8))[-4]:\
+	(sizeof(mode) == 4)?\
+		((mode*)(list += 8))[-2]:\
+		((mode*)(list += sizeof(mode)))[-1])
+
+#endif /* __STDARG */

arm64/include/ape/stdint.h

@@ -0,0 +1,31 @@
+#ifndef _STDINT_H_
+#define _STDINT_H_ 1
+
+typedef char int8_t;
+typedef short int16_t;
+typedef int int32_t;
+typedef long long int64_t;
+typedef unsigned char uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int uint32_t;
+typedef unsigned long long uint64_t;
+
+typedef long long intptr_t;
+typedef unsigned long long uintptr_t;
+
+#define INT8_MIN	0x80
+#define INT16_MIN	0x8000
+#define INT32_MIN	0x80000000
+#define INT64_MIN	0x8000000000000000LL
+
+#define INT8_MAX	0x7f
+#define INT16_MAX	0x7fff
+#define INT32_MAX	0x7fffffff
+#define INT64_MAX	0x7fffffffffffffffULL
+
+#define UINT8_MAX	0xff
+#define UINT16_MAX	0xffff
+#define UINT32_MAX	0xffffffffL
+#define UINT64_MAX	0xffffffffffffffffULL
+
+#endif

arm64/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 long	r0;
+	unsigned long long	r1;
+	unsigned long long	r2;
+	unsigned long long	r3;
+	unsigned long long	r4;
+	unsigned long long	r5;
+	unsigned long long	r6;
+	unsigned long long	r7;
+	unsigned long long	r8;
+	unsigned long long	r9;
+	unsigned long long	r10;
+	unsigned long long	r11;
+	unsigned long long	r12;
+	unsigned long long	r13;
+	unsigned long long	r14;
+	unsigned long long	r15;
+	unsigned long long	r16;
+	unsigned long long	r17;
+	unsigned long long	r18;
+	unsigned long long	r19;
+	unsigned long long	r20;
+	unsigned long long	r21;
+	unsigned long long	r22;
+	unsigned long long	r23;
+	unsigned long long	r24;
+	unsigned long long	r25;
+	unsigned long long	r26;
+	unsigned long long	r27;
+	unsigned long long	r28;	/* sb */
+	union {
+		unsigned long long	r29;
+		unsigned long long	sp;
+	};
+	union {
+		unsigned long long	r30;
+		unsigned long long	link;
+	};
+	unsigned long long	type;	/* of exception */
+	unsigned long long	psr;
+	unsigned long long	pc;	/* interrupted addr */
+};
+
+#endif

sys/src/ape/lib/9/arm64/getcallerpc.s

@@ -0,0 +1,3 @@
+TEXT getcallerpc(SB), $0
+	MOV	0(SP), R0
+	RETURN

sys/src/ape/lib/9/arm64/getfcr.s

@@ -0,0 +1,21 @@
+#define	SYSARG5(op0,op1,Cn,Cm,op2)	((op0)<<19|(op1)<<16|(Cn)<<12|(Cm)<<8|(op2)<<5)
+
+#define	FPCR		SPR(SYSARG5(3,3,4,4,0))
+#define	FPSR		SPR(SYSARG5(3,3,4,4,1))
+
+TEXT	setfcr(SB), $0
+	MSR	R0, FPCR
+	RETURN
+
+TEXT	getfcr(SB), $0
+	MRS	FPCR, R0
+	RETURN
+
+TEXT	getfsr(SB), $0
+	MRS	FPSR, R0
+	RETURN
+
+TEXT	setfsr(SB), $0
+	MSR	R0, FPSR
+	RETURN
+

sys/src/ape/lib/ap/arm64/_seek.c

@@ -0,0 +1,11 @@
+extern long __SEEK(long long*, int, long long, int);
+
+long long
+_SEEK(int fd, long long o, int p)
+{
+	long long l;
+
+	if(__SEEK(&l, fd, o, p) < 0)
+		l = -1;
+	return l;
+}

sys/src/ape/lib/ap/arm64/getfcr.s

@@ -0,0 +1,21 @@
+#define	SYSARG5(op0,op1,Cn,Cm,op2)	((op0)<<19|(op1)<<16|(Cn)<<12|(Cm)<<8|(op2)<<5)
+
+#define	FPCR		SPR(SYSARG5(3,3,4,4,0))
+#define	FPSR		SPR(SYSARG5(3,3,4,4,1))
+
+TEXT	setfcr(SB), 1, $-4
+	MSR	R0, FPCR
+	RETURN
+
+TEXT	getfcr(SB), 1, $-4
+	MRS	FPCR, R0
+	RETURN
+
+TEXT	getfsr(SB), 1, $-4
+	MRS	FPSR, R0
+	RETURN
+
+TEXT	setfsr(SB), 1, $-4
+	MSR	R0, FPSR
+	RETURN
+

sys/src/ape/lib/ap/arm64/lock.c

@@ -0,0 +1,43 @@
+#define _LOCK_EXTENSION
+#include "../plan9/sys9.h"
+#include <lock.h>
+
+extern int	tas(int*);
+extern unsigned long long _barrier(unsigned long long);
+
+void
+lock(Lock *lk)
+{
+	int i;
+
+	/* once fast */
+	if(!tas(&lk->val))
+		return;
+	/* a thousand times pretty fast */
+	for(i=0; i<1000; i++){
+		if(!tas(&lk->val))
+			return;
+		_SLEEP(0);
+	}
+	/* now nice and slow */
+	for(i=0; i<1000; i++){
+		if(!tas(&lk->val))
+			return;
+		_SLEEP(100);
+	}
+	/* take your time */
+	while(tas(&lk->val))
+		_SLEEP(1000);
+}
+
+int
+canlock(Lock *lk)
+{
+	return tas(&lk->val) == 0;
+}
+
+void
+unlock(Lock *lk)
+{
+	lk->val = _barrier(0);
+}

sys/src/ape/lib/ap/arm64/main9.s

@@ -0,0 +1,39 @@
+#define NPRIVATES	16
+
+GLOBL	_tos(SB), $8
+GLOBL	_errnoloc(SB), $8
+GLOBL	_plan9err(SB), $128
+GLOBL	_privates(SB), $8
+GLOBL	_nprivates(SB), $4
+
+TEXT	_main(SB), 1, $(32 + 8+128 + NPRIVATES*8)
+	MOV	$setSB(SB), R28
+	MOV	R0, _tos(SB)
+
+	ADD	$32, RSP, R1
+
+	MOV	R1, _errnoloc(SB)
+	ADD	$8, R1
+
+	MOV	R1, _plan9err(SB)
+	ADD	$128, R1
+
+	MOV	R1, _privates(SB)
+	MOVW	$NPRIVATES, R2
+	MOVW	R2, _nprivates(SB)
+
+	BL	_envsetup(SB)
+
+	MOV	environ(SB), R2
+	MOV	R2, 24(RSP)
+
+	MOV	$inargv+0(FP), R1
+	MOV	R1, 16(RSP)
+
+	MOVW	inargc-8(FP), R0
+	MOV	R0, 8(RSP)
+
+	BL	main(SB)
+loop:
+	BL	exit(SB)
+	B	loop

sys/src/ape/lib/ap/arm64/mkfile

@@ -0,0 +1,16 @@
+APE=/sys/src/ape
+<$APE/config
+LIB=/$objtype/lib/ape/libap.a
+OFILES=\
+	_seek.$O\
+	getfcr.$O\
+	lock.$O\
+	main9.$O\
+	notetramp.$O\
+	setjmp.$O\
+	tas.$O\
+
+</sys/src/cmd/mksyslib
+
+CFLAGS=-c -D_POSIX_SOURCE -D_PLAN9_SOURCE
+

sys/src/ape/lib/ap/arm64/notetramp.c

@@ -0,0 +1,72 @@
+#include "../plan9/lib.h"
+#include "../plan9/sys9.h"
+#include <signal.h>
+#include <setjmp.h>
+
+/* A stack to hold pcs when signals nest */
+#define MAXSIGSTACK 20
+typedef struct Pcstack Pcstack;
+static struct Pcstack {
+	int sig;
+	void (*hdlr)(int, char*, Ureg*);
+	unsigned long long restorepc;
+	Ureg *u;
+} pcstack[MAXSIGSTACK];
+static int nstack = 0;
+
+static void notecont(Ureg*, char*);
+
+void
+_notetramp(int sig, void (*hdlr)(int, char*, Ureg*), Ureg *u)
+{
+	Pcstack *p;
+
+	if(nstack >= MAXSIGSTACK)
+		_NOTED(1);	/* nesting too deep; just do system default */
+	p = &pcstack[nstack];
+	p->restorepc = u->pc;
+	p->sig = sig;
+	p->hdlr = hdlr;
+	p->u = u;
+	nstack++;
+	u->pc = (unsigned long long) notecont;
+	_NOTED(2);	/* NSAVE: clear note but hold state */
+}
+
+static void
+notecont(Ureg *u, char *s)
+{
+	Pcstack *p;
+	void(*f)(int, char*, Ureg*);
+
+	p = &pcstack[nstack-1];
+	f = p->hdlr;
+	u->pc = p->restorepc;
+	nstack--;
+	(*f)(p->sig, s, u);
+	_NOTED(3);	/* NRSTR */
+}
+
+#define JMPBUFPC 1
+#define JMPBUFSP 0
+
+extern sigset_t	_psigblocked;
+
+void
+siglongjmp(sigjmp_buf j, int ret)
+{
+	struct Ureg *u;
+
+	if(j[0])
+		_psigblocked = j[1];
+	if(nstack == 0 || pcstack[nstack-1].u->sp > j[2+JMPBUFSP])
+		longjmp(j+2, ret);
+	u = pcstack[nstack-1].u;
+	nstack--;
+	u->r0 = ret;
+	if(ret == 0)
+		u->r0 = 1;
+	u->pc = j[2+JMPBUFPC];
+	u->sp = j[2+JMPBUFSP];
+	_NOTED(3);	/* NRSTR */
+}

sys/src/ape/lib/ap/arm64/setjmp.s

@@ -0,0 +1,26 @@
+TEXT sigsetjmp(SB), 1, $-4
+	MOVW	savemask+8(FP), R1
+	MOVW	_psigblocked(SB), R2
+	MOVW	R1, 0(R0)
+	MOVW	R2, 4(R0)
+	ADD	$8, R0
+	/* wet floor */
+
+TEXT setjmp(SB), 1, $-4
+	MOV	LR, 8(R0)
+	MOV	SP, R1
+	MOV	R1, 0(R0)
+	MOV	$0, R0
+	RETURN
+
+
+TEXT longjmp(SB), 1, $-4
+	MOV	8(R0), LR
+	MOV	0(R0), R1
+	MOVW	arg+8(FP), R0
+	MOV	R1, SP
+	CBZ	R0, _one
+	RETURN
+_one:
+	MOV	$1, R0
+	RETURN

sys/src/ape/lib/ap/arm64/tas.s

@@ -0,0 +1,11 @@
+TEXT	tas(SB), 1, $-4
+	MOVW	$1, R2
+_tas1:
+	LDXRW	(R0), R1
+	STXRW	R2, (R0), R3
+	CBNZ	R3, _tas1
+	MOVW	R1, R0
+
+TEXT	_barrier(SB), 1, $-4
+	DMB	$0xB	// ISH
+	RETURN

sys/src/ape/lib/mp/arm64/mkfile

@@ -0,0 +1,8 @@
+APE=/sys/src/ape
+<$APE/config
+
+objtype=arm64
+</$objtype/mkfile
+
+install clean all update:V:
+	

sys/src/ape/lib/sec/arm64/mkfile

@@ -0,0 +1,8 @@
+APE=/sys/src/ape
+<$APE/config
+
+objtype=arm64
+</$objtype/mkfile
+
+install clean all update:V:
+	

sys/src/cmd/pcc.c

@@ -16,6 +16,7 @@ Objtype objtype[] = {
 	{"68020",	"2c", "2l", "2", "2.out"},
 	{"arm",		"5c", "5l", "5", "5.out"},
 	{"amd64",	"6c", "6l", "6", "6.out"},
+	{"arm64",	"7c", "7l", "7", "7.out"},
 	{"386",		"8c", "8l", "8", "8.out"},
 	{"power64",	"9c", "9l", "9", "9.out"},
 	{"sparc",	"kc", "kl", "k", "k.out"},