libc: initial arm64 support

2 files changed, 117 insertions, 0 deletions

diff --git a/arm64/include/u.h b/arm64/include/u.h
new file mode 100644
index 000000000..94d9cc3b7
--- /dev/null
+++ b/arm64/include/u.h
@@ -0,0 +1,77 @@
+#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 vlong	intptr;
+typedef uvlong	uintptr;
+typedef unsigned long	usize;
+typedef	uint		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;
+typedef signed char s8int;
+typedef signed short s16int;
+typedef signed int s32int;
+typedef signed long long s64int;
+
+/* FPCR (control) */
+#define	FPINEX		(1<<12)
+#define	FPUNFL		(1<<11)
+#define	FPOVFL		(1<<10)
+#define	FPZDIV		(1<<9)
+#define	FPINVAL		(1<<8)
+
+#define	FPRNR		(0<<22)
+#define	FPRPINF		(1<<22)
+#define	FPRNINF		(2<<22)
+#define	FPRZ		(3<<22)
+
+#define	FPRMASK		(3<<22)
+
+/* FPSR (status) */
+#define	FPPEXT	0
+#define	FPPSGL	0
+#define	FPPDBL	0
+#define	FPPMASK	0
+#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) < 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/arm64/include/ureg.h b/arm64/include/ureg.h
new file mode 100644
index 000000000..02aae42de
--- /dev/null
+++ b/arm64/include/ureg.h
@@ -0,0 +1,40 @@
+typedef struct Ureg {
+	u64int	r0;
+	u64int	r1;
+	u64int	r2;
+	u64int	r3;
+	u64int	r4;
+	u64int	r5;
+	u64int	r6;
+	u64int	r7;
+	u64int	r8;
+	u64int	r9;
+	u64int	r10;
+	u64int	r11;
+	u64int	r12;
+	u64int	r13;
+	u64int	r14;
+	u64int	r15;
+	u64int	r16;
+	u64int	r17;
+	u64int	r18;
+	u64int	r19;
+	u64int	r20;
+	u64int	r21;
+	u64int	r22;
+	u64int	r23;
+	u64int	r24;
+	u64int	r25;
+	u64int	r26;
+	u64int	r27;
+	u64int	r28;	/* sb */
+	u64int	r29;
+	union {
+		u64int	r30;
+		u64int	link;
+	};
+	u64int	sp;
+	u64int	pc;	/* interrupted addr */
+	u64int	psr;
+	u64int	type;	/* of exception */
+} Ureg;