new arm64 backend, yeepee

arm64/all.h

@@ -0,0 +1,37 @@
+#include "../all.h"
+
+enum Arm64Reg {
+	R0 = RXX + 1,
+	     R1,  R2,  R3,  R4,  R5,  R6,  R7,
+	R8,  R9,  R10, R11, R12, R13, R14, R15,
+	IP0, IP1, R18, R19, R20, R21, R22, R23,
+	R24, R25, R26, R27, R28, FP,  LR,  SP,
+
+	V0,  V1,  V2,  V3,  V4,  V5,  V6,  V7,
+	V8,  V9,  V10, V11, V12, V13, V14, V15,
+	V16, V17, V18, V19, V20, V21, V22, V23,
+	V24, V25, V26, V27, V28, V29, V30, /* V31, */
+
+	NFPR = V30 - V0 + 1,
+	NGPR = SP - R0 + 1,
+	NGPS = R18 - R0 + 1,
+	NFPS = (V7 - V0 + 1) + (V30 - V16 + 1),
+	NCLR = (R28 - R19 + 1) + (V15 - V8 + 1),
+};
+MAKESURE(reg_not_tmp, V30 < (int)Tmp0);
+
+/* targ.c */
+extern int arm64_rsave[];
+extern int arm64_rclob[];
+
+/* abi.c */
+bits arm64_retregs(Ref, int[2]);
+bits arm64_argregs(Ref, int[2]);
+void arm64_abi(Fn *);
+
+/* isel.c */
+int arm64_logimm(uint64_t, int);
+void arm64_isel(Fn *);
+
+/* emit.c */
+void arm64_emitfn(Fn *, FILE *);