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runtime: use internal/cpu in alginit

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After CL 104636 the feature flags in internal/cpu are initialized before
alginit and can now be used for aeshash feature detection. Also remove
now unused runtime variables:
x86:
	support_ssse3
	support_sse42
	support_aes
arm64:
	support_aes

Change-Id: I2f64198d91750eaf3c6cf2aac6e9e17615811ec8
Reviewed-on: https://go-review.googlesource.com/106015
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Meng Zhuo 2018-04-10 16:42:44 +08:00 committed by Brad Fitzpatrick
parent 144fae8ed5
commit 6b5236ae53
6 changed files with 5 additions and 37 deletions
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9
src/runtime/alg.go
View File

@ -5,6 +5,7 @@
package runtime
import (
"internal/cpu"
"runtime/internal/sys"
"unsafe"
)
@ -282,13 +283,13 @@ func alginit() {
// Install AES hash algorithms if the instructions needed are present.
if (GOARCH == "386" || GOARCH == "amd64") &&
GOOS != "nacl" &&
support_aes && // AESENC
support_ssse3 && // PSHUFB
support_sse41 { // PINSR{D,Q}
cpu.X86.HasAES && // AESENC
cpu.X86.HasSSSE3 && // PSHUFB
cpu.X86.HasSSE41 { // PINSR{D,Q}
initAlgAES()
return
}
if GOARCH == "arm64" && arm64_support_aes {
if GOARCH == "arm64" && cpu.ARM64.HasAES {
initAlgAES()
return
}

9
src/runtime/asm_386.s
View File

@ -167,21 +167,12 @@ notintel:
TESTL $(1<<26), DX // SSE2
SETNE runtime·support_sse2(SB)
TESTL $(1<<9), DI // SSSE3
SETNE runtime·support_ssse3(SB)
TESTL $(1<<19), DI // SSE4.1
SETNE runtime·support_sse41(SB)
TESTL $(1<<20), DI // SSE4.2
SETNE runtime·support_sse42(SB)
TESTL $(1<<23), DI // POPCNT
SETNE runtime·support_popcnt(SB)
TESTL $(1<<25), DI // AES
SETNE runtime·support_aes(SB)
TESTL $(1<<27), DI // OSXSAVE
SETNE runtime·support_osxsave(SB)

9
src/runtime/asm_amd64.s
View File

@ -130,21 +130,12 @@ notintel:
TESTL $(1<<26), DX // SSE2
SETNE runtime·support_sse2(SB)
TESTL $(1<<9), CX // SSSE3
SETNE runtime·support_ssse3(SB)
TESTL $(1<<19), CX // SSE4.1
SETNE runtime·support_sse41(SB)
TESTL $(1<<20), CX // SSE4.2
SETNE runtime·support_sse42(SB)
TESTL $(1<<23), CX // POPCNT
SETNE runtime·support_popcnt(SB)
TESTL $(1<<25), CX // AES
SETNE runtime·support_aes(SB)
TESTL $(1<<27), CX // OSXSAVE
SETNE runtime·support_osxsave(SB)

9
src/runtime/asm_amd64p32.s
View File

@ -50,21 +50,12 @@ notintel:
TESTL $(1<<26), DX // SSE2
SETNE runtime·support_sse2(SB)
TESTL $(1<<9), CX // SSSE3
SETNE runtime·support_ssse3(SB)
TESTL $(1<<19), CX // SSE4.1
SETNE runtime·support_sse41(SB)
TESTL $(1<<20), CX // SSE4.2
SETNE runtime·support_sse42(SB)
TESTL $(1<<23), CX // POPCNT
SETNE runtime·support_popcnt(SB)
TESTL $(1<<25), CX // AES
SETNE runtime·support_aes(SB)
TESTL $(1<<27), CX // OSXSAVE
SETNE runtime·support_osxsave(SB)

1
src/runtime/os_linux_arm64.go
View File

@ -29,7 +29,6 @@ func archauxv(tag, val uintptr) {
randomNumber = uint32(startupRandomData[4]) | uint32(startupRandomData[5])<<8 |
uint32(startupRandomData[6])<<16 | uint32(startupRandomData[7])<<24
case _AT_HWCAP:
arm64_support_aes = ((val>>3)&0x1 == 0x1)
cpu_hwcap = uint(val)
case _AT_HWCAP2:
cpu_hwcap2 = uint(val)

5
src/runtime/runtime2.go
View File

@ -771,7 +771,6 @@ var (
processorVersionInfo uint32
isIntel bool
lfenceBeforeRdtsc bool
support_aes bool
support_avx bool
support_avx2 bool
support_erms bool
@ -779,10 +778,6 @@ var (
support_popcnt bool
support_sse2 bool
support_sse41 bool
support_sse42 bool
support_ssse3 bool
arm64_support_aes bool
goarm uint8 // set by cmd/link on arm systems
framepointer_enabled bool // set by cmd/link