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-rw-r--r--src/runtime/os_freebsd_arm.go48
1 files changed, 48 insertions, 0 deletions
diff --git a/src/runtime/os_freebsd_arm.go b/src/runtime/os_freebsd_arm.go
new file mode 100644
index 0000000..3feaa5e
--- /dev/null
+++ b/src/runtime/os_freebsd_arm.go
@@ -0,0 +1,48 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package runtime
+
+import "internal/cpu"
+
+const (
+ _HWCAP_VFP = 1 << 6
+ _HWCAP_VFPv3 = 1 << 13
+)
+
+func checkgoarm() {
+ if goarm > 5 && cpu.HWCap&_HWCAP_VFP == 0 {
+ print("runtime: this CPU has no floating point hardware, so it cannot run\n")
+ print("this GOARM=", goarm, " binary. Recompile using GOARM=5.\n")
+ exit(1)
+ }
+ if goarm > 6 && cpu.HWCap&_HWCAP_VFPv3 == 0 {
+ print("runtime: this CPU has no VFPv3 floating point hardware, so it cannot run\n")
+ print("this GOARM=", goarm, " binary. Recompile using GOARM=5 or GOARM=6.\n")
+ exit(1)
+ }
+
+ // osinit not called yet, so ncpu not set: must use getncpu directly.
+ if getncpu() > 1 && goarm < 7 {
+ print("runtime: this system has multiple CPUs and must use\n")
+ print("atomic synchronization instructions. Recompile using GOARM=7.\n")
+ exit(1)
+ }
+}
+
+func archauxv(tag, val uintptr) {
+ switch tag {
+ case _AT_HWCAP:
+ cpu.HWCap = uint(val)
+ case _AT_HWCAP2:
+ cpu.HWCap2 = uint(val)
+ }
+}
+
+//go:nosplit
+func cputicks() int64 {
+ // Currently cputicks() is used in blocking profiler and to seed runtime·fastrand().
+ // runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
+ return nanotime()
+}