diff options
Diffstat (limited to 'src/runtime/os_freebsd_arm64.go')
-rw-r--r-- | src/runtime/os_freebsd_arm64.go | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/src/runtime/os_freebsd_arm64.go b/src/runtime/os_freebsd_arm64.go index 51ebf9d478..b5b25f0dc5 100644 --- a/src/runtime/os_freebsd_arm64.go +++ b/src/runtime/os_freebsd_arm64.go @@ -4,149 +4,6 @@ package runtime -import "internal/cpu" - -const ( - hwcap_FP = 1 << 0 - hwcap_ASIMD = 1 << 1 - hwcap_EVTSTRM = 1 << 2 - hwcap_AES = 1 << 3 - hwcap_PMULL = 1 << 4 - hwcap_SHA1 = 1 << 5 - hwcap_SHA2 = 1 << 6 - hwcap_CRC32 = 1 << 7 - hwcap_ATOMICS = 1 << 8 - hwcap_FPHP = 1 << 9 - hwcap_ASIMDHP = 1 << 10 - hwcap_CPUID = 1 << 11 - hwcap_ASIMDRDM = 1 << 12 - hwcap_JSCVT = 1 << 13 - hwcap_FCMA = 1 << 14 - hwcap_LRCPC = 1 << 15 - hwcap_DCPOP = 1 << 16 - hwcap_SHA3 = 1 << 17 - hwcap_SM3 = 1 << 18 - hwcap_SM4 = 1 << 19 - hwcap_ASIMDDP = 1 << 20 - hwcap_SHA512 = 1 << 21 - hwcap_SVE = 1 << 22 - hwcap_ASIMDFHM = 1 << 23 -) - -func getisar0() uint64 -func getisar1() uint64 -func getpfr0() uint64 - -// no hwcap support on FreeBSD aarch64, we need to retrieve the info from -// ID_AA64ISAR0_EL1, ID_AA64ISAR1_EL1 and ID_AA64PFR0_EL1 -func archauxv(tag, val uintptr) { - var isar0, isar1, pfr0 uint64 - - isar0 = getisar0() - isar1 = getisar1() - pfr0 = getpfr0() - - // ID_AA64ISAR0_EL1 - switch extractBits(isar0, 4, 7) { - case 1: - cpu.HWCap |= hwcap_AES - case 2: - cpu.HWCap |= hwcap_PMULL | hwcap_AES - } - - switch extractBits(isar0, 8, 11) { - case 1: - cpu.HWCap |= hwcap_SHA1 - } - - switch extractBits(isar0, 12, 15) { - case 1: - cpu.HWCap |= hwcap_SHA2 - case 2: - cpu.HWCap |= hwcap_SHA2 | hwcap_SHA512 - } - - switch extractBits(isar0, 16, 19) { - case 1: - cpu.HWCap |= hwcap_CRC32 - } - - switch extractBits(isar0, 20, 23) { - case 2: - cpu.HWCap |= hwcap_ATOMICS - } - - switch extractBits(isar0, 28, 31) { - case 1: - cpu.HWCap |= hwcap_ASIMDRDM - } - - switch extractBits(isar0, 32, 35) { - case 1: - cpu.HWCap |= hwcap_SHA3 - } - - switch extractBits(isar0, 36, 39) { - case 1: - cpu.HWCap |= hwcap_SM3 - } - - switch extractBits(isar0, 40, 43) { - case 1: - cpu.HWCap |= hwcap_SM4 - } - - switch extractBits(isar0, 44, 47) { - case 1: - cpu.HWCap |= hwcap_ASIMDDP - } - - // ID_AA64ISAR1_EL1 - switch extractBits(isar1, 0, 3) { - case 1: - cpu.HWCap |= hwcap_DCPOP - } - - switch extractBits(isar1, 12, 15) { - case 1: - cpu.HWCap |= hwcap_JSCVT - } - - switch extractBits(isar1, 16, 19) { - case 1: - cpu.HWCap |= hwcap_FCMA - } - - switch extractBits(isar1, 20, 23) { - case 1: - cpu.HWCap |= hwcap_LRCPC - } - - // ID_AA64PFR0_EL1 - switch extractBits(pfr0, 16, 19) { - case 0: - cpu.HWCap |= hwcap_FP - case 1: - cpu.HWCap |= hwcap_FP | hwcap_FPHP - } - - switch extractBits(pfr0, 20, 23) { - case 0: - cpu.HWCap |= hwcap_ASIMD - case 1: - cpu.HWCap |= hwcap_ASIMD | hwcap_ASIMDHP - } - - switch extractBits(pfr0, 32, 35) { - case 1: - cpu.HWCap |= hwcap_SVE - } -} - -func extractBits(data uint64, start, end uint) uint { - return (uint)(data>>start) & ((1 << (end - start + 1)) - 1) -} - //go:nosplit func cputicks() int64 { // Currently cputicks() is used in blocking profiler and to seed fastrand(). |