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with 566 additions and 65 deletions
......@@ -19,7 +19,7 @@
// The differences in this and the original implementation are
// due to the calling conventions and initialization of constants.
//go:build gc && !purego
//go:build gc && !purego && (ppc64 || ppc64le)
#include "textflag.h"
......@@ -36,32 +36,68 @@
// for VPERMXOR
#define MASK R18
DATA consts<>+0x00(SB)/8, $0x3320646e61707865
DATA consts<>+0x08(SB)/8, $0x6b20657479622d32
DATA consts<>+0x10(SB)/8, $0x0000000000000001
DATA consts<>+0x18(SB)/8, $0x0000000000000000
DATA consts<>+0x20(SB)/8, $0x0000000000000004
DATA consts<>+0x28(SB)/8, $0x0000000000000000
DATA consts<>+0x30(SB)/8, $0x0a0b08090e0f0c0d
DATA consts<>+0x38(SB)/8, $0x0203000106070405
DATA consts<>+0x40(SB)/8, $0x090a0b080d0e0f0c
DATA consts<>+0x48(SB)/8, $0x0102030005060704
DATA consts<>+0x50(SB)/8, $0x6170786561707865
DATA consts<>+0x58(SB)/8, $0x6170786561707865
DATA consts<>+0x60(SB)/8, $0x3320646e3320646e
DATA consts<>+0x68(SB)/8, $0x3320646e3320646e
DATA consts<>+0x70(SB)/8, $0x79622d3279622d32
DATA consts<>+0x78(SB)/8, $0x79622d3279622d32
DATA consts<>+0x80(SB)/8, $0x6b2065746b206574
DATA consts<>+0x88(SB)/8, $0x6b2065746b206574
DATA consts<>+0x90(SB)/8, $0x0000000100000000
DATA consts<>+0x98(SB)/8, $0x0000000300000002
DATA consts<>+0xa0(SB)/8, $0x5566774411223300
DATA consts<>+0xa8(SB)/8, $0xddeeffcc99aabb88
DATA consts<>+0xb0(SB)/8, $0x6677445522330011
DATA consts<>+0xb8(SB)/8, $0xeeffccddaabb8899
DATA consts<>+0x00(SB)/4, $0x61707865
DATA consts<>+0x04(SB)/4, $0x3320646e
DATA consts<>+0x08(SB)/4, $0x79622d32
DATA consts<>+0x0c(SB)/4, $0x6b206574
DATA consts<>+0x10(SB)/4, $0x00000001
DATA consts<>+0x14(SB)/4, $0x00000000
DATA consts<>+0x18(SB)/4, $0x00000000
DATA consts<>+0x1c(SB)/4, $0x00000000
DATA consts<>+0x20(SB)/4, $0x00000004
DATA consts<>+0x24(SB)/4, $0x00000000
DATA consts<>+0x28(SB)/4, $0x00000000
DATA consts<>+0x2c(SB)/4, $0x00000000
DATA consts<>+0x30(SB)/4, $0x0e0f0c0d
DATA consts<>+0x34(SB)/4, $0x0a0b0809
DATA consts<>+0x38(SB)/4, $0x06070405
DATA consts<>+0x3c(SB)/4, $0x02030001
DATA consts<>+0x40(SB)/4, $0x0d0e0f0c
DATA consts<>+0x44(SB)/4, $0x090a0b08
DATA consts<>+0x48(SB)/4, $0x05060704
DATA consts<>+0x4c(SB)/4, $0x01020300
DATA consts<>+0x50(SB)/4, $0x61707865
DATA consts<>+0x54(SB)/4, $0x61707865
DATA consts<>+0x58(SB)/4, $0x61707865
DATA consts<>+0x5c(SB)/4, $0x61707865
DATA consts<>+0x60(SB)/4, $0x3320646e
DATA consts<>+0x64(SB)/4, $0x3320646e
DATA consts<>+0x68(SB)/4, $0x3320646e
DATA consts<>+0x6c(SB)/4, $0x3320646e
DATA consts<>+0x70(SB)/4, $0x79622d32
DATA consts<>+0x74(SB)/4, $0x79622d32
DATA consts<>+0x78(SB)/4, $0x79622d32
DATA consts<>+0x7c(SB)/4, $0x79622d32
DATA consts<>+0x80(SB)/4, $0x6b206574
DATA consts<>+0x84(SB)/4, $0x6b206574
DATA consts<>+0x88(SB)/4, $0x6b206574
DATA consts<>+0x8c(SB)/4, $0x6b206574
DATA consts<>+0x90(SB)/4, $0x00000000
DATA consts<>+0x94(SB)/4, $0x00000001
DATA consts<>+0x98(SB)/4, $0x00000002
DATA consts<>+0x9c(SB)/4, $0x00000003
DATA consts<>+0xa0(SB)/4, $0x11223300
DATA consts<>+0xa4(SB)/4, $0x55667744
DATA consts<>+0xa8(SB)/4, $0x99aabb88
DATA consts<>+0xac(SB)/4, $0xddeeffcc
DATA consts<>+0xb0(SB)/4, $0x22330011
DATA consts<>+0xb4(SB)/4, $0x66774455
DATA consts<>+0xb8(SB)/4, $0xaabb8899
DATA consts<>+0xbc(SB)/4, $0xeeffccdd
GLOBL consts<>(SB), RODATA, $0xc0
#ifdef GOARCH_ppc64
#define BE_XXBRW_INIT() \
LVSL (R0)(R0), V24 \
VSPLTISB $3, V25 \
VXOR V24, V25, V24 \
#define BE_XXBRW(vr) VPERM vr, vr, V24, vr
#else
#define BE_XXBRW_INIT()
#define BE_XXBRW(vr)
#endif
//func chaCha20_ctr32_vsx(out, inp *byte, len int, key *[8]uint32, counter *uint32)
TEXT ·chaCha20_ctr32_vsx(SB),NOSPLIT,$64-40
MOVD out+0(FP), OUT
......@@ -94,6 +130,8 @@ TEXT ·chaCha20_ctr32_vsx(SB),NOSPLIT,$64-40
// Clear V27
VXOR V27, V27, V27
BE_XXBRW_INIT()
// V28
LXVW4X (CONSTBASE)(R11), VS60
......@@ -299,6 +337,11 @@ loop_vsx:
VADDUWM V8, V18, V8
VADDUWM V12, V19, V12
BE_XXBRW(V0)
BE_XXBRW(V4)
BE_XXBRW(V8)
BE_XXBRW(V12)
CMPU LEN, $64
BLT tail_vsx
......@@ -327,6 +370,11 @@ loop_vsx:
VADDUWM V9, V18, V8
VADDUWM V13, V19, V12
BE_XXBRW(V0)
BE_XXBRW(V4)
BE_XXBRW(V8)
BE_XXBRW(V12)
CMPU LEN, $64
BLT tail_vsx
......@@ -334,8 +382,8 @@ loop_vsx:
LXVW4X (INP)(R8), VS60
LXVW4X (INP)(R9), VS61
LXVW4X (INP)(R10), VS62
VXOR V27, V0, V27
VXOR V27, V0, V27
VXOR V28, V4, V28
VXOR V29, V8, V29
VXOR V30, V12, V30
......@@ -354,6 +402,11 @@ loop_vsx:
VADDUWM V10, V18, V8
VADDUWM V14, V19, V12
BE_XXBRW(V0)
BE_XXBRW(V4)
BE_XXBRW(V8)
BE_XXBRW(V12)
CMPU LEN, $64
BLT tail_vsx
......@@ -381,6 +434,11 @@ loop_vsx:
VADDUWM V11, V18, V8
VADDUWM V15, V19, V12
BE_XXBRW(V0)
BE_XXBRW(V4)
BE_XXBRW(V8)
BE_XXBRW(V12)
CMPU LEN, $64
BLT tail_vsx
......@@ -408,9 +466,9 @@ loop_vsx:
done_vsx:
// Increment counter by number of 64 byte blocks
MOVD (CNT), R14
MOVWZ (CNT), R14
ADD BLOCKS, R14
MOVD R14, (CNT)
MOVWZ R14, (CNT)
RET
tail_vsx:
......
......@@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build (!amd64 && !ppc64le && !s390x) || !gc || purego
//go:build (!amd64 && !ppc64le && !ppc64 && !s390x) || !gc || purego
package poly1305
......
......@@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build gc && !purego
//go:build gc && !purego && (ppc64 || ppc64le)
package poly1305
......
......@@ -2,15 +2,25 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build gc && !purego
//go:build gc && !purego && (ppc64 || ppc64le)
#include "textflag.h"
// This was ported from the amd64 implementation.
#ifdef GOARCH_ppc64le
#define LE_MOVD MOVD
#define LE_MOVWZ MOVWZ
#define LE_MOVHZ MOVHZ
#else
#define LE_MOVD MOVDBR
#define LE_MOVWZ MOVWBR
#define LE_MOVHZ MOVHBR
#endif
#define POLY1305_ADD(msg, h0, h1, h2, t0, t1, t2) \
MOVD (msg), t0; \
MOVD 8(msg), t1; \
LE_MOVD (msg)( R0), t0; \
LE_MOVD (msg)(R24), t1; \
MOVD $1, t2; \
ADDC t0, h0, h0; \
ADDE t1, h1, h1; \
......@@ -50,10 +60,6 @@
ADDE t3, h1, h1; \
ADDZE h2
DATA ·poly1305Mask<>+0x00(SB)/8, $0x0FFFFFFC0FFFFFFF
DATA ·poly1305Mask<>+0x08(SB)/8, $0x0FFFFFFC0FFFFFFC
GLOBL ·poly1305Mask<>(SB), RODATA, $16
// func update(state *[7]uint64, msg []byte)
TEXT ·update(SB), $0-32
MOVD state+0(FP), R3
......@@ -66,6 +72,8 @@ TEXT ·update(SB), $0-32
MOVD 24(R3), R11 // r0
MOVD 32(R3), R12 // r1
MOVD $8, R24
CMP R5, $16
BLT bytes_between_0_and_15
......@@ -94,7 +102,7 @@ flush_buffer:
// Greater than 8 -- load the rightmost remaining bytes in msg
// and put into R17 (h1)
MOVD (R4)(R21), R17
LE_MOVD (R4)(R21), R17
MOVD $16, R22
// Find the offset to those bytes
......@@ -118,7 +126,7 @@ just1:
BLT less8
// Exactly 8
MOVD (R4), R16
LE_MOVD (R4), R16
CMP R17, $0
......@@ -133,7 +141,7 @@ less8:
MOVD $0, R22 // shift count
CMP R5, $4
BLT less4
MOVWZ (R4), R16
LE_MOVWZ (R4), R16
ADD $4, R4
ADD $-4, R5
MOVD $32, R22
......@@ -141,7 +149,7 @@ less8:
less4:
CMP R5, $2
BLT less2
MOVHZ (R4), R21
LE_MOVHZ (R4), R21
SLD R22, R21, R21
OR R16, R21, R16
ADD $16, R22
......
......@@ -555,6 +555,7 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe
}
gotMsgExtInfo := false
gotUserAuthInfoRequest := false
for {
packet, err := c.readPacket()
if err != nil {
......@@ -585,6 +586,9 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe
if msg.PartialSuccess {
return authPartialSuccess, msg.Methods, nil
}
if !gotUserAuthInfoRequest {
return authFailure, msg.Methods, unexpectedMessageError(msgUserAuthInfoRequest, packet[0])
}
return authFailure, msg.Methods, nil
case msgUserAuthSuccess:
return authSuccess, nil, nil
......@@ -596,6 +600,7 @@ func (cb KeyboardInteractiveChallenge) auth(session []byte, user string, c packe
if err := Unmarshal(packet, &msg); err != nil {
return authFailure, nil, err
}
gotUserAuthInfoRequest = true
// Manually unpack the prompt/echo pairs.
rest := msg.Prompts
......
......@@ -149,7 +149,7 @@ func (s *ServerConfig) AddHostKey(key Signer) {
}
// cachedPubKey contains the results of querying whether a public key is
// acceptable for a user.
// acceptable for a user. This is a FIFO cache.
type cachedPubKey struct {
user string
pubKeyData []byte
......@@ -157,7 +157,13 @@ type cachedPubKey struct {
perms *Permissions
}
const maxCachedPubKeys = 16
// maxCachedPubKeys is the number of cache entries we store.
//
// Due to consistent misuse of the PublicKeyCallback API, we have reduced this
// to 1, such that the only key in the cache is the most recently seen one. This
// forces the behavior that the last call to PublicKeyCallback will always be
// with the key that is used for authentication.
const maxCachedPubKeys = 1
// pubKeyCache caches tests for public keys. Since SSH clients
// will query whether a public key is acceptable before attempting to
......@@ -179,9 +185,10 @@ func (c *pubKeyCache) get(user string, pubKeyData []byte) (cachedPubKey, bool) {
// add adds the given tuple to the cache.
func (c *pubKeyCache) add(candidate cachedPubKey) {
if len(c.keys) < maxCachedPubKeys {
c.keys = append(c.keys, candidate)
if len(c.keys) >= maxCachedPubKeys {
c.keys = c.keys[1:]
}
c.keys = append(c.keys, candidate)
}
// ServerConn is an authenticated SSH connection, as seen from the
......@@ -510,8 +517,8 @@ userAuthLoop:
if err := s.transport.writePacket(Marshal(discMsg)); err != nil {
return nil, err
}
return nil, discMsg
authErrs = append(authErrs, discMsg)
return nil, &ServerAuthError{Errors: authErrs}
}
var userAuthReq userAuthRequestMsg
......
// Copyright 2024 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.
//go:build darwin && amd64 && gc
#include "textflag.h"
TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_sysctl(SB)
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $8
DATA ·libc_sysctl_trampoline_addr(SB)/8, $libc_sysctl_trampoline<>(SB)
TEXT libc_sysctlbyname_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_sysctlbyname(SB)
GLOBL ·libc_sysctlbyname_trampoline_addr(SB), RODATA, $8
DATA ·libc_sysctlbyname_trampoline_addr(SB)/8, $libc_sysctlbyname_trampoline<>(SB)
// Copyright 2024 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.
//go:build darwin && amd64 && gc
package cpu
// darwinSupportsAVX512 checks Darwin kernel for AVX512 support via sysctl
// call (see issue 43089). It also restricts AVX512 support for Darwin to
// kernel version 21.3.0 (MacOS 12.2.0) or later (see issue 49233).
//
// Background:
// Darwin implements a special mechanism to economize on thread state when
// AVX512 specific registers are not in use. This scheme minimizes state when
// preempting threads that haven't yet used any AVX512 instructions, but adds
// special requirements to check for AVX512 hardware support at runtime (e.g.
// via sysctl call or commpage inspection). See issue 43089 and link below for
// full background:
// https://github.com/apple-oss-distributions/xnu/blob/xnu-11215.1.10/osfmk/i386/fpu.c#L214-L240
//
// Additionally, all versions of the Darwin kernel from 19.6.0 through 21.2.0
// (corresponding to MacOS 10.15.6 - 12.1) have a bug that can cause corruption
// of the AVX512 mask registers (K0-K7) upon signal return. For this reason
// AVX512 is considered unsafe to use on Darwin for kernel versions prior to
// 21.3.0, where a fix has been confirmed. See issue 49233 for full background.
func darwinSupportsAVX512() bool {
return darwinSysctlEnabled([]byte("hw.optional.avx512f\x00")) && darwinKernelVersionCheck(21, 3, 0)
}
// Ensure Darwin kernel version is at least major.minor.patch, avoiding dependencies
func darwinKernelVersionCheck(major, minor, patch int) bool {
var release [256]byte
err := darwinOSRelease(&release)
if err != nil {
return false
}
var mmp [3]int
c := 0
Loop:
for _, b := range release[:] {
switch {
case b >= '0' && b <= '9':
mmp[c] = 10*mmp[c] + int(b-'0')
case b == '.':
c++
if c > 2 {
return false
}
case b == 0:
break Loop
default:
return false
}
}
if c != 2 {
return false
}
return mmp[0] > major || mmp[0] == major && (mmp[1] > minor || mmp[1] == minor && mmp[2] >= patch)
}
......@@ -6,10 +6,10 @@
package cpu
// cpuid is implemented in cpu_x86.s for gc compiler
// cpuid is implemented in cpu_gc_x86.s for gc compiler
// and in cpu_gccgo.c for gccgo.
func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
// xgetbv with ecx = 0 is implemented in cpu_x86.s for gc compiler
// xgetbv with ecx = 0 is implemented in cpu_gc_x86.s for gc compiler
// and in cpu_gccgo.c for gccgo.
func xgetbv() (eax, edx uint32)
......@@ -23,9 +23,3 @@ func xgetbv() (eax, edx uint32) {
gccgoXgetbv(&a, &d)
return a, d
}
// gccgo doesn't build on Darwin, per:
// https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/gcc.rb#L76
func darwinSupportsAVX512() bool {
return false
}
......@@ -110,7 +110,6 @@ func doinit() {
ARM64.HasASIMDFHM = isSet(hwCap, hwcap_ASIMDFHM)
ARM64.HasDIT = isSet(hwCap, hwcap_DIT)
// HWCAP2 feature bits
ARM64.HasSVE2 = isSet(hwCap2, hwcap2_SVE2)
ARM64.HasI8MM = isSet(hwCap2, hwcap2_I8MM)
......
// Copyright 2024 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 cpu
import (
"syscall"
"unsafe"
)
// RISC-V extension discovery code for Linux. The approach here is to first try the riscv_hwprobe
// syscall falling back to HWCAP to check for the C extension if riscv_hwprobe is not available.
//
// A note on detection of the Vector extension using HWCAP.
//
// Support for the Vector extension version 1.0 was added to the Linux kernel in release 6.5.
// Support for the riscv_hwprobe syscall was added in 6.4. It follows that if the riscv_hwprobe
// syscall is not available then neither is the Vector extension (which needs kernel support).
// The riscv_hwprobe syscall should then be all we need to detect the Vector extension.
// However, some RISC-V board manufacturers ship boards with an older kernel on top of which
// they have back-ported various versions of the Vector extension patches but not the riscv_hwprobe
// patches. These kernels advertise support for the Vector extension using HWCAP. Falling
// back to HWCAP to detect the Vector extension, if riscv_hwprobe is not available, or simply not
// bothering with riscv_hwprobe at all and just using HWCAP may then seem like an attractive option.
//
// Unfortunately, simply checking the 'V' bit in AT_HWCAP will not work as this bit is used by
// RISC-V board and cloud instance providers to mean different things. The Lichee Pi 4A board
// and the Scaleway RV1 cloud instances use the 'V' bit to advertise their support for the unratified
// 0.7.1 version of the Vector Specification. The Banana Pi BPI-F3 and the CanMV-K230 board use
// it to advertise support for 1.0 of the Vector extension. Versions 0.7.1 and 1.0 of the Vector
// extension are binary incompatible. HWCAP can then not be used in isolation to populate the
// HasV field as this field indicates that the underlying CPU is compatible with RVV 1.0.
//
// There is a way at runtime to distinguish between versions 0.7.1 and 1.0 of the Vector
// specification by issuing a RVV 1.0 vsetvli instruction and checking the vill bit of the vtype
// register. This check would allow us to safely detect version 1.0 of the Vector extension
// with HWCAP, if riscv_hwprobe were not available. However, the check cannot
// be added until the assembler supports the Vector instructions.
//
// Note the riscv_hwprobe syscall does not suffer from these ambiguities by design as all of the
// extensions it advertises support for are explicitly versioned. It's also worth noting that
// the riscv_hwprobe syscall is the only way to detect multi-letter RISC-V extensions, e.g., Zba.
// These cannot be detected using HWCAP and so riscv_hwprobe must be used to detect the majority
// of RISC-V extensions.
//
// Please see https://docs.kernel.org/arch/riscv/hwprobe.html for more information.
// golang.org/x/sys/cpu is not allowed to depend on golang.org/x/sys/unix so we must
// reproduce the constants, types and functions needed to make the riscv_hwprobe syscall
// here.
const (
// Copied from golang.org/x/sys/unix/ztypes_linux_riscv64.go.
riscv_HWPROBE_KEY_IMA_EXT_0 = 0x4
riscv_HWPROBE_IMA_C = 0x2
riscv_HWPROBE_IMA_V = 0x4
riscv_HWPROBE_EXT_ZBA = 0x8
riscv_HWPROBE_EXT_ZBB = 0x10
riscv_HWPROBE_EXT_ZBS = 0x20
riscv_HWPROBE_KEY_CPUPERF_0 = 0x5
riscv_HWPROBE_MISALIGNED_FAST = 0x3
riscv_HWPROBE_MISALIGNED_MASK = 0x7
)
const (
// sys_RISCV_HWPROBE is copied from golang.org/x/sys/unix/zsysnum_linux_riscv64.go.
sys_RISCV_HWPROBE = 258
)
// riscvHWProbePairs is copied from golang.org/x/sys/unix/ztypes_linux_riscv64.go.
type riscvHWProbePairs struct {
key int64
value uint64
}
const (
// CPU features
hwcap_RISCV_ISA_C = 1 << ('C' - 'A')
)
func doinit() {
// A slice of key/value pair structures is passed to the RISCVHWProbe syscall. The key
// field should be initialised with one of the key constants defined above, e.g.,
// RISCV_HWPROBE_KEY_IMA_EXT_0. The syscall will set the value field to the appropriate value.
// If the kernel does not recognise a key it will set the key field to -1 and the value field to 0.
pairs := []riscvHWProbePairs{
{riscv_HWPROBE_KEY_IMA_EXT_0, 0},
{riscv_HWPROBE_KEY_CPUPERF_0, 0},
}
// This call only indicates that extensions are supported if they are implemented on all cores.
if riscvHWProbe(pairs, 0) {
if pairs[0].key != -1 {
v := uint(pairs[0].value)
RISCV64.HasC = isSet(v, riscv_HWPROBE_IMA_C)
RISCV64.HasV = isSet(v, riscv_HWPROBE_IMA_V)
RISCV64.HasZba = isSet(v, riscv_HWPROBE_EXT_ZBA)
RISCV64.HasZbb = isSet(v, riscv_HWPROBE_EXT_ZBB)
RISCV64.HasZbs = isSet(v, riscv_HWPROBE_EXT_ZBS)
}
if pairs[1].key != -1 {
v := pairs[1].value & riscv_HWPROBE_MISALIGNED_MASK
RISCV64.HasFastMisaligned = v == riscv_HWPROBE_MISALIGNED_FAST
}
}
// Let's double check with HWCAP if the C extension does not appear to be supported.
// This may happen if we're running on a kernel older than 6.4.
if !RISCV64.HasC {
RISCV64.HasC = isSet(hwCap, hwcap_RISCV_ISA_C)
}
}
func isSet(hwc uint, value uint) bool {
return hwc&value != 0
}
// riscvHWProbe is a simplified version of the generated wrapper function found in
// golang.org/x/sys/unix/zsyscall_linux_riscv64.go. We simplify it by removing the
// cpuCount and cpus parameters which we do not need. We always want to pass 0 for
// these parameters here so the kernel only reports the extensions that are present
// on all cores.
func riscvHWProbe(pairs []riscvHWProbePairs, flags uint) bool {
var _zero uintptr
var p0 unsafe.Pointer
if len(pairs) > 0 {
p0 = unsafe.Pointer(&pairs[0])
} else {
p0 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall.Syscall6(sys_RISCV_HWPROBE, uintptr(p0), uintptr(len(pairs)), uintptr(0), uintptr(0), uintptr(flags), 0)
return e1 == 0
}
// Copyright 2024 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.
//go:build 386 || amd64p32 || (amd64 && (!darwin || !gc))
package cpu
func darwinSupportsAVX512() bool {
panic("only implemented for gc && amd64 && darwin")
}
......@@ -92,10 +92,8 @@ func archInit() {
osSupportsAVX = isSet(1, eax) && isSet(2, eax)
if runtime.GOOS == "darwin" {
// Darwin doesn't save/restore AVX-512 mask registers correctly across signal handlers.
// Since users can't rely on mask register contents, let's not advertise AVX-512 support.
// See issue 49233.
osSupportsAVX512 = false
// Darwin requires special AVX512 checks, see cpu_darwin_x86.go
osSupportsAVX512 = osSupportsAVX && darwinSupportsAVX512()
} else {
// Check if OPMASK and ZMM registers have OS support.
osSupportsAVX512 = osSupportsAVX && isSet(5, eax) && isSet(6, eax) && isSet(7, eax)
......
// Copyright 2024 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.
// Minimal copy of x/sys/unix so the cpu package can make a
// system call on Darwin without depending on x/sys/unix.
//go:build darwin && amd64 && gc
package cpu
import (
"syscall"
"unsafe"
)
type _C_int int32
// adapted from unix.Uname() at x/sys/unix/syscall_darwin.go L419
func darwinOSRelease(release *[256]byte) error {
// from x/sys/unix/zerrors_openbsd_amd64.go
const (
CTL_KERN = 0x1
KERN_OSRELEASE = 0x2
)
mib := []_C_int{CTL_KERN, KERN_OSRELEASE}
n := unsafe.Sizeof(*release)
return sysctl(mib, &release[0], &n, nil, 0)
}
type Errno = syscall.Errno
var _zero uintptr // Single-word zero for use when we need a valid pointer to 0 bytes.
// from x/sys/unix/zsyscall_darwin_amd64.go L791-807
func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) error {
var _p0 unsafe.Pointer
if len(mib) > 0 {
_p0 = unsafe.Pointer(&mib[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
if _, _, err := syscall_syscall6(
libc_sysctl_trampoline_addr,
uintptr(_p0),
uintptr(len(mib)),
uintptr(unsafe.Pointer(old)),
uintptr(unsafe.Pointer(oldlen)),
uintptr(unsafe.Pointer(new)),
uintptr(newlen),
); err != 0 {
return err
}
return nil
}
var libc_sysctl_trampoline_addr uintptr
// adapted from internal/cpu/cpu_arm64_darwin.go
func darwinSysctlEnabled(name []byte) bool {
out := int32(0)
nout := unsafe.Sizeof(out)
if ret := sysctlbyname(&name[0], (*byte)(unsafe.Pointer(&out)), &nout, nil, 0); ret != nil {
return false
}
return out > 0
}
//go:cgo_import_dynamic libc_sysctl sysctl "/usr/lib/libSystem.B.dylib"
var libc_sysctlbyname_trampoline_addr uintptr
// adapted from runtime/sys_darwin.go in the pattern of sysctl() above, as defined in x/sys/unix
func sysctlbyname(name *byte, old *byte, oldlen *uintptr, new *byte, newlen uintptr) error {
if _, _, err := syscall_syscall6(
libc_sysctlbyname_trampoline_addr,
uintptr(unsafe.Pointer(name)),
uintptr(unsafe.Pointer(old)),
uintptr(unsafe.Pointer(oldlen)),
uintptr(unsafe.Pointer(new)),
uintptr(newlen),
0,
); err != 0 {
return err
}
return nil
}
//go:cgo_import_dynamic libc_sysctlbyname sysctlbyname "/usr/lib/libSystem.B.dylib"
// Implemented in the runtime package (runtime/sys_darwin.go)
func syscall_syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
//go:linkname syscall_syscall6 syscall.syscall6
......@@ -156,7 +156,7 @@ from the generated architecture-specific files listed below, and merge these
into a common file for each OS.
The merge is performed in the following steps:
1. Construct the set of common code that is idential in all architecture-specific files.
1. Construct the set of common code that is identical in all architecture-specific files.
2. Write this common code to the merged file.
3. Remove the common code from all architecture-specific files.
......
......@@ -58,6 +58,102 @@ func IoctlGetEthtoolDrvinfo(fd int, ifname string) (*EthtoolDrvinfo, error) {
return &value, err
}
// IoctlGetEthtoolTsInfo fetches ethtool timestamping and PHC
// association for the network device specified by ifname.
func IoctlGetEthtoolTsInfo(fd int, ifname string) (*EthtoolTsInfo, error) {
ifr, err := NewIfreq(ifname)
if err != nil {
return nil, err
}
value := EthtoolTsInfo{Cmd: ETHTOOL_GET_TS_INFO}
ifrd := ifr.withData(unsafe.Pointer(&value))
err = ioctlIfreqData(fd, SIOCETHTOOL, &ifrd)
return &value, err
}
// IoctlGetHwTstamp retrieves the hardware timestamping configuration
// for the network device specified by ifname.
func IoctlGetHwTstamp(fd int, ifname string) (*HwTstampConfig, error) {
ifr, err := NewIfreq(ifname)
if err != nil {
return nil, err
}
value := HwTstampConfig{}
ifrd := ifr.withData(unsafe.Pointer(&value))
err = ioctlIfreqData(fd, SIOCGHWTSTAMP, &ifrd)
return &value, err
}
// IoctlSetHwTstamp updates the hardware timestamping configuration for
// the network device specified by ifname.
func IoctlSetHwTstamp(fd int, ifname string, cfg *HwTstampConfig) error {
ifr, err := NewIfreq(ifname)
if err != nil {
return err
}
ifrd := ifr.withData(unsafe.Pointer(cfg))
return ioctlIfreqData(fd, SIOCSHWTSTAMP, &ifrd)
}
// FdToClockID derives the clock ID from the file descriptor number
// - see clock_gettime(3), FD_TO_CLOCKID macros. The resulting ID is
// suitable for system calls like ClockGettime.
func FdToClockID(fd int) int32 { return int32((int(^fd) << 3) | 3) }
// IoctlPtpClockGetcaps returns the description of a given PTP device.
func IoctlPtpClockGetcaps(fd int) (*PtpClockCaps, error) {
var value PtpClockCaps
err := ioctlPtr(fd, PTP_CLOCK_GETCAPS2, unsafe.Pointer(&value))
return &value, err
}
// IoctlPtpSysOffsetPrecise returns a description of the clock
// offset compared to the system clock.
func IoctlPtpSysOffsetPrecise(fd int) (*PtpSysOffsetPrecise, error) {
var value PtpSysOffsetPrecise
err := ioctlPtr(fd, PTP_SYS_OFFSET_PRECISE2, unsafe.Pointer(&value))
return &value, err
}
// IoctlPtpSysOffsetExtended returns an extended description of the
// clock offset compared to the system clock. The samples parameter
// specifies the desired number of measurements.
func IoctlPtpSysOffsetExtended(fd int, samples uint) (*PtpSysOffsetExtended, error) {
value := PtpSysOffsetExtended{Samples: uint32(samples)}
err := ioctlPtr(fd, PTP_SYS_OFFSET_EXTENDED2, unsafe.Pointer(&value))
return &value, err
}
// IoctlPtpPinGetfunc returns the configuration of the specified
// I/O pin on given PTP device.
func IoctlPtpPinGetfunc(fd int, index uint) (*PtpPinDesc, error) {
value := PtpPinDesc{Index: uint32(index)}
err := ioctlPtr(fd, PTP_PIN_GETFUNC2, unsafe.Pointer(&value))
return &value, err
}
// IoctlPtpPinSetfunc updates configuration of the specified PTP
// I/O pin.
func IoctlPtpPinSetfunc(fd int, pd *PtpPinDesc) error {
return ioctlPtr(fd, PTP_PIN_SETFUNC2, unsafe.Pointer(pd))
}
// IoctlPtpPeroutRequest configures the periodic output mode of the
// PTP I/O pins.
func IoctlPtpPeroutRequest(fd int, r *PtpPeroutRequest) error {
return ioctlPtr(fd, PTP_PEROUT_REQUEST2, unsafe.Pointer(r))
}
// IoctlPtpExttsRequest configures the external timestamping mode
// of the PTP I/O pins.
func IoctlPtpExttsRequest(fd int, r *PtpExttsRequest) error {
return ioctlPtr(fd, PTP_EXTTS_REQUEST2, unsafe.Pointer(r))
}
// IoctlGetWatchdogInfo fetches information about a watchdog device from the
// Linux watchdog API. For more information, see:
// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html.
......
......@@ -158,6 +158,16 @@ includes_Linux='
#endif
#define _GNU_SOURCE
// See the description in unix/linux/types.go
#if defined(__ARM_EABI__) || \
(defined(__mips__) && (_MIPS_SIM == _ABIO32)) || \
(defined(__powerpc__) && (!defined(__powerpc64__)))
# ifdef _TIME_BITS
# undef _TIME_BITS
# endif
# define _TIME_BITS 32
#endif
// <sys/ioctl.h> is broken on powerpc64, as it fails to include definitions of
// these structures. We just include them copied from <bits/termios.h>.
#if defined(__powerpc__)
......@@ -256,6 +266,7 @@ struct ltchars {
#include <linux/nsfs.h>
#include <linux/perf_event.h>
#include <linux/pps.h>
#include <linux/ptp_clock.h>
#include <linux/ptrace.h>
#include <linux/random.h>
#include <linux/reboot.h>
......@@ -527,6 +538,7 @@ ccflags="$@"
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|MCAST|EVFILT|NOTE|SHUT|PROT|MAP|MREMAP|MFD|T?PACKET|MSG|SCM|MCL|DT|MADV|PR|LOCAL|TCPOPT|UDP)_/ ||
$2 ~ /^NFC_(GENL|PROTO|COMM|RF|SE|DIRECTION|LLCP|SOCKPROTO)_/ ||
$2 ~ /^NFC_.*_(MAX)?SIZE$/ ||
$2 ~ /^PTP_/ ||
$2 ~ /^RAW_PAYLOAD_/ ||
$2 ~ /^[US]F_/ ||
$2 ~ /^TP_STATUS_/ ||
......@@ -656,7 +668,7 @@ errors=$(
signals=$(
echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
grep -E -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
sort
)
......@@ -666,7 +678,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
sort >_error.grep
echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
grep -E -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
sort >_signal.grep
echo '// mkerrors.sh' "$@"
......
......@@ -360,7 +360,7 @@ func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int,
var status _C_int
var r Pid_t
err = ERESTART
// AIX wait4 may return with ERESTART errno, while the processus is still
// AIX wait4 may return with ERESTART errno, while the process is still
// active.
for err == ERESTART {
r, err = wait4(Pid_t(pid), &status, options, rusage)
......