runtime: remove unused armArch, hwcap and hardDiv
After CL 140057 these are only written but never read in gccgo.
Change-Id: Ieea24f16b494d12bdb2e6a1533d3f7449fc31c28
Reviewed-on: https://go-review.googlesource.com/c/141077
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/libgo/go/runtime/os_linux_arm.go b/libgo/go/runtime/os_linux_arm.go
index 4b86455..56c29f5 100644
--- a/libgo/go/runtime/os_linux_arm.go
+++ b/libgo/go/runtime/os_linux_arm.go
@@ -4,20 +4,7 @@
package runtime
-import "unsafe"
-
-const (
- _AT_PLATFORM = 15 // introduced in at least 2.6.11
-
- _HWCAP_VFP = 1 << 6 // introduced in at least 2.6.11
- _HWCAP_VFPv3 = 1 << 13 // introduced in 2.6.30
- _HWCAP_IDIVA = 1 << 17
-)
-
var randomNumber uint32
-var armArch uint8 = 6 // we default to ARMv6
-var hwcap uint32 // set by archauxv
-var hardDiv bool // set if a hardware divider is available
func archauxv(tag, val uintptr) {
switch tag {
@@ -27,15 +14,5 @@
// it as a byte array.
randomNumber = uint32(startupRandomData[4]) | uint32(startupRandomData[5])<<8 |
uint32(startupRandomData[6])<<16 | uint32(startupRandomData[7])<<24
-
- case _AT_PLATFORM: // v5l, v6l, v7l
- t := *(*uint8)(unsafe.Pointer(val + 1))
- if '5' <= t && t <= '7' {
- armArch = t - '0'
- }
-
- case _AT_HWCAP: // CPU capability bit flags
- hwcap = uint32(val)
- hardDiv = (hwcap & _HWCAP_IDIVA) != 0
}
}
