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7d69d983c4522784860c781a0d7b80408fdc0cd1
sys/unix/bpxsvc_zos.go
dustin-ward 7d69d983c4 unix: extend support for z/OS 
This change syncs the IBM internal version of sys/unix with the public
repository.

There are a variety of new syscalls and const definitions that have been
accumulated over the past few years to support developers using Go on
the platform. Old simulations of calls like 'epoll' and 'fstatfs' have
been replaced with their real counterparts. The zos/s390x syscalls also
have extensive trampolining to handle zos systems that might not have
support for some of these new system calls.

Closes golang/go#67071

Change-Id: I973d9e0abca2b05365308cf2b890438e50ae5957
Reviewed-on: https://go-review.googlesource.com/c/sys/+/582035
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Bill O'Farrell <billotosyr@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-03 20:28:26 +00:00

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// 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 zos
package unix
import (
"bytes"
"fmt"
"unsafe"
)
//go:noescape
func bpxcall(plist []unsafe.Pointer, bpx_offset int64)
//go:noescape
func A2e([]byte)
//go:noescape
func E2a([]byte)
const (
BPX4STA = 192 // stat
BPX4FST = 104 // fstat
BPX4LST = 132 // lstat
BPX4OPN = 156 // open
BPX4CLO = 72 // close
BPX4CHR = 500 // chattr
BPX4FCR = 504 // fchattr
BPX4LCR = 1180 // lchattr
BPX4CTW = 492 // cond_timed_wait
BPX4GTH = 1056 // __getthent
BPX4PTQ = 412 // pthread_quiesc
BPX4PTR = 320 // ptrace
)
const (
//options
//byte1
BPX_OPNFHIGH = 0x80
//byte2
BPX_OPNFEXEC = 0x80
//byte3
BPX_O_NOLARGEFILE = 0x08
BPX_O_LARGEFILE = 0x04
BPX_O_ASYNCSIG = 0x02
BPX_O_SYNC = 0x01
//byte4
BPX_O_CREXCL = 0xc0
BPX_O_CREAT = 0x80
BPX_O_EXCL = 0x40
BPX_O_NOCTTY = 0x20
BPX_O_TRUNC = 0x10
BPX_O_APPEND = 0x08
BPX_O_NONBLOCK = 0x04
BPX_FNDELAY = 0x04
BPX_O_RDWR = 0x03
BPX_O_RDONLY = 0x02
BPX_O_WRONLY = 0x01
BPX_O_ACCMODE = 0x03
BPX_O_GETFL = 0x0f
//mode
// byte1 (file type)
BPX_FT_DIR = 1
BPX_FT_CHARSPEC = 2
BPX_FT_REGFILE = 3
BPX_FT_FIFO = 4
BPX_FT_SYMLINK = 5
BPX_FT_SOCKET = 6
//byte3
BPX_S_ISUID = 0x08
BPX_S_ISGID = 0x04
BPX_S_ISVTX = 0x02
BPX_S_IRWXU1 = 0x01
BPX_S_IRUSR = 0x01
//byte4
BPX_S_IRWXU2 = 0xc0
BPX_S_IWUSR = 0x80
BPX_S_IXUSR = 0x40
BPX_S_IRWXG = 0x38
BPX_S_IRGRP = 0x20
BPX_S_IWGRP = 0x10
BPX_S_IXGRP = 0x08
BPX_S_IRWXOX = 0x07
BPX_S_IROTH = 0x04
BPX_S_IWOTH = 0x02
BPX_S_IXOTH = 0x01
CW_INTRPT = 1
CW_CONDVAR = 32
CW_TIMEOUT = 64
PGTHA_NEXT = 2
PGTHA_CURRENT = 1
PGTHA_FIRST = 0
PGTHA_LAST = 3
PGTHA_PROCESS = 0x80
PGTHA_CONTTY = 0x40
PGTHA_PATH = 0x20
PGTHA_COMMAND = 0x10
PGTHA_FILEDATA = 0x08
PGTHA_THREAD = 0x04
PGTHA_PTAG = 0x02
PGTHA_COMMANDLONG = 0x01
PGTHA_THREADFAST = 0x80
PGTHA_FILEPATH = 0x40
PGTHA_THDSIGMASK = 0x20
// thread quiece mode
QUIESCE_TERM int32 = 1
QUIESCE_FORCE int32 = 2
QUIESCE_QUERY int32 = 3
QUIESCE_FREEZE int32 = 4
QUIESCE_UNFREEZE int32 = 5
FREEZE_THIS_THREAD int32 = 6
FREEZE_EXIT int32 = 8
QUIESCE_SRB int32 = 9
)
type Pgtha struct {
Pid uint32 // 0
Tid0 uint32 // 4
Tid1 uint32
Accesspid byte // C
Accesstid byte // D
Accessasid uint16 // E
Loginname [8]byte // 10
Flag1 byte // 18
Flag1b2 byte // 19
}
type Bpxystat_t struct { // DSECT BPXYSTAT
St_id [4]uint8 // 0
St_length uint16 // 0x4
St_version uint16 // 0x6
St_mode uint32 // 0x8
St_ino uint32 // 0xc
St_dev uint32 // 0x10
St_nlink uint32 // 0x14
St_uid uint32 // 0x18
St_gid uint32 // 0x1c
St_size uint64 // 0x20
St_atime uint32 // 0x28
St_mtime uint32 // 0x2c
St_ctime uint32 // 0x30
St_rdev uint32 // 0x34
St_auditoraudit uint32 // 0x38
St_useraudit uint32 // 0x3c
St_blksize uint32 // 0x40
St_createtime uint32 // 0x44
St_auditid [4]uint32 // 0x48
St_res01 uint32 // 0x58
Ft_ccsid uint16 // 0x5c
Ft_flags uint16 // 0x5e
St_res01a [2]uint32 // 0x60
St_res02 uint32 // 0x68
St_blocks uint32 // 0x6c
St_opaque [3]uint8 // 0x70
St_visible uint8 // 0x73
St_reftime uint32 // 0x74
St_fid uint64 // 0x78
St_filefmt uint8 // 0x80
St_fspflag2 uint8 // 0x81
St_res03 [2]uint8 // 0x82
St_ctimemsec uint32 // 0x84
St_seclabel [8]uint8 // 0x88
St_res04 [4]uint8 // 0x90
// end of version 1
_ uint32 // 0x94
St_atime64 uint64 // 0x98
St_mtime64 uint64 // 0xa0
St_ctime64 uint64 // 0xa8
St_createtime64 uint64 // 0xb0
St_reftime64 uint64 // 0xb8
_ uint64 // 0xc0
St_res05 [16]uint8 // 0xc8
// end of version 2
}
type BpxFilestatus struct {
Oflag1 byte
Oflag2 byte
Oflag3 byte
Oflag4 byte
}
type BpxMode struct {
Ftype byte
Mode1 byte
Mode2 byte
Mode3 byte
}
// Thr attribute structure for extended attributes
type Bpxyatt_t struct { // DSECT BPXYATT
Att_id [4]uint8
Att_version uint16
Att_res01 [2]uint8
Att_setflags1 uint8
Att_setflags2 uint8
Att_setflags3 uint8
Att_setflags4 uint8
Att_mode uint32
Att_uid uint32
Att_gid uint32
Att_opaquemask [3]uint8
Att_visblmaskres uint8
Att_opaque [3]uint8
Att_visibleres uint8
Att_size_h uint32
Att_size_l uint32
Att_atime uint32
Att_mtime uint32
Att_auditoraudit uint32
Att_useraudit uint32
Att_ctime uint32
Att_reftime uint32
// end of version 1
Att_filefmt uint8
Att_res02 [3]uint8
Att_filetag uint32
Att_res03 [8]uint8
// end of version 2
Att_atime64 uint64
Att_mtime64 uint64
Att_ctime64 uint64
Att_reftime64 uint64
Att_seclabel [8]uint8
Att_ver3res02 [8]uint8
// end of version 3
}
func BpxOpen(name string, options *BpxFilestatus, mode *BpxMode) (rv int32, rc int32, rn int32) {
if len(name) < 1024 {
var namebuf [1024]byte
sz := int32(copy(namebuf[:], name))
A2e(namebuf[:sz])
var parms [7]unsafe.Pointer
parms[0] = unsafe.Pointer(&sz)
parms[1] = unsafe.Pointer(&namebuf[0])
parms[2] = unsafe.Pointer(options)
parms[3] = unsafe.Pointer(mode)
parms[4] = unsafe.Pointer(&rv)
parms[5] = unsafe.Pointer(&rc)
parms[6] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4OPN)
return rv, rc, rn
}
return -1, -1, -1
}
func BpxClose(fd int32) (rv int32, rc int32, rn int32) {
var parms [4]unsafe.Pointer
parms[0] = unsafe.Pointer(&fd)
parms[1] = unsafe.Pointer(&rv)
parms[2] = unsafe.Pointer(&rc)
parms[3] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4CLO)
return rv, rc, rn
}
func BpxFileFStat(fd int32, st *Bpxystat_t) (rv int32, rc int32, rn int32) {
st.St_id = [4]uint8{0xe2, 0xe3, 0xc1, 0xe3}
st.St_version = 2
stat_sz := uint32(unsafe.Sizeof(*st))
var parms [6]unsafe.Pointer
parms[0] = unsafe.Pointer(&fd)
parms[1] = unsafe.Pointer(&stat_sz)
parms[2] = unsafe.Pointer(st)
parms[3] = unsafe.Pointer(&rv)
parms[4] = unsafe.Pointer(&rc)
parms[5] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4FST)
return rv, rc, rn
}
func BpxFileStat(name string, st *Bpxystat_t) (rv int32, rc int32, rn int32) {
if len(name) < 1024 {
var namebuf [1024]byte
sz := int32(copy(namebuf[:], name))
A2e(namebuf[:sz])
st.St_id = [4]uint8{0xe2, 0xe3, 0xc1, 0xe3}
st.St_version = 2
stat_sz := uint32(unsafe.Sizeof(*st))
var parms [7]unsafe.Pointer
parms[0] = unsafe.Pointer(&sz)
parms[1] = unsafe.Pointer(&namebuf[0])
parms[2] = unsafe.Pointer(&stat_sz)
parms[3] = unsafe.Pointer(st)
parms[4] = unsafe.Pointer(&rv)
parms[5] = unsafe.Pointer(&rc)
parms[6] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4STA)
return rv, rc, rn
}
return -1, -1, -1
}
func BpxFileLStat(name string, st *Bpxystat_t) (rv int32, rc int32, rn int32) {
if len(name) < 1024 {
var namebuf [1024]byte
sz := int32(copy(namebuf[:], name))
A2e(namebuf[:sz])
st.St_id = [4]uint8{0xe2, 0xe3, 0xc1, 0xe3}
st.St_version = 2
stat_sz := uint32(unsafe.Sizeof(*st))
var parms [7]unsafe.Pointer
parms[0] = unsafe.Pointer(&sz)
parms[1] = unsafe.Pointer(&namebuf[0])
parms[2] = unsafe.Pointer(&stat_sz)
parms[3] = unsafe.Pointer(st)
parms[4] = unsafe.Pointer(&rv)
parms[5] = unsafe.Pointer(&rc)
parms[6] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4LST)
return rv, rc, rn
}
return -1, -1, -1
}
func BpxChattr(path string, attr *Bpxyatt_t) (rv int32, rc int32, rn int32) {
if len(path) >= 1024 {
return -1, -1, -1
}
var namebuf [1024]byte
sz := int32(copy(namebuf[:], path))
A2e(namebuf[:sz])
attr_sz := uint32(unsafe.Sizeof(*attr))
var parms [7]unsafe.Pointer
parms[0] = unsafe.Pointer(&sz)
parms[1] = unsafe.Pointer(&namebuf[0])
parms[2] = unsafe.Pointer(&attr_sz)
parms[3] = unsafe.Pointer(attr)
parms[4] = unsafe.Pointer(&rv)
parms[5] = unsafe.Pointer(&rc)
parms[6] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4CHR)
return rv, rc, rn
}
func BpxLchattr(path string, attr *Bpxyatt_t) (rv int32, rc int32, rn int32) {
if len(path) >= 1024 {
return -1, -1, -1
}
var namebuf [1024]byte
sz := int32(copy(namebuf[:], path))
A2e(namebuf[:sz])
attr_sz := uint32(unsafe.Sizeof(*attr))
var parms [7]unsafe.Pointer
parms[0] = unsafe.Pointer(&sz)
parms[1] = unsafe.Pointer(&namebuf[0])
parms[2] = unsafe.Pointer(&attr_sz)
parms[3] = unsafe.Pointer(attr)
parms[4] = unsafe.Pointer(&rv)
parms[5] = unsafe.Pointer(&rc)
parms[6] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4LCR)
return rv, rc, rn
}
func BpxFchattr(fd int32, attr *Bpxyatt_t) (rv int32, rc int32, rn int32) {
attr_sz := uint32(unsafe.Sizeof(*attr))
var parms [6]unsafe.Pointer
parms[0] = unsafe.Pointer(&fd)
parms[1] = unsafe.Pointer(&attr_sz)
parms[2] = unsafe.Pointer(attr)
parms[3] = unsafe.Pointer(&rv)
parms[4] = unsafe.Pointer(&rc)
parms[5] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4FCR)
return rv, rc, rn
}
func BpxCondTimedWait(sec uint32, nsec uint32, events uint32, secrem *uint32, nsecrem *uint32) (rv int32, rc int32, rn int32) {
var parms [8]unsafe.Pointer
parms[0] = unsafe.Pointer(&sec)
parms[1] = unsafe.Pointer(&nsec)
parms[2] = unsafe.Pointer(&events)
parms[3] = unsafe.Pointer(secrem)
parms[4] = unsafe.Pointer(nsecrem)
parms[5] = unsafe.Pointer(&rv)
parms[6] = unsafe.Pointer(&rc)
parms[7] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4CTW)
return rv, rc, rn
}
func BpxGetthent(in *Pgtha, outlen *uint32, out unsafe.Pointer) (rv int32, rc int32, rn int32) {
var parms [7]unsafe.Pointer
inlen := uint32(26) // nothing else will work. Go says Pgtha is 28-byte because of alignment, but Pgtha is "packed" and must be 26-byte
parms[0] = unsafe.Pointer(&inlen)
parms[1] = unsafe.Pointer(&in)
parms[2] = unsafe.Pointer(outlen)
parms[3] = unsafe.Pointer(&out)
parms[4] = unsafe.Pointer(&rv)
parms[5] = unsafe.Pointer(&rc)
parms[6] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4GTH)
return rv, rc, rn
}
func ZosJobname() (jobname string, err error) {
var pgtha Pgtha
pgtha.Pid = uint32(Getpid())
pgtha.Accesspid = PGTHA_CURRENT
pgtha.Flag1 = PGTHA_PROCESS
var out [256]byte
var outlen uint32
outlen = 256
rv, rc, rn := BpxGetthent(&pgtha, &outlen, unsafe.Pointer(&out[0]))
if rv == 0 {
gthc := []byte{0x87, 0xa3, 0x88, 0x83} // 'gthc' in ebcdic
ix := bytes.Index(out[:], gthc)
if ix == -1 {
err = fmt.Errorf("BPX4GTH: gthc return data not found")
return
}
jn := out[ix+80 : ix+88] // we didn't declare Pgthc, but jobname is 8-byte at offset 80
E2a(jn)
jobname = string(bytes.TrimRight(jn, " "))
} else {
err = fmt.Errorf("BPX4GTH: rc=%d errno=%d reason=code=0x%x", rv, rc, rn)
}
return
}
func Bpx4ptq(code int32, data string) (rv int32, rc int32, rn int32) {
var userdata [8]byte
var parms [5]unsafe.Pointer
copy(userdata[:], data+" ")
A2e(userdata[:])
parms[0] = unsafe.Pointer(&code)
parms[1] = unsafe.Pointer(&userdata[0])
parms[2] = unsafe.Pointer(&rv)
parms[3] = unsafe.Pointer(&rc)
parms[4] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4PTQ)
return rv, rc, rn
}
const (
PT_TRACE_ME = 0 // Debug this process
PT_READ_I = 1 // Read a full word
PT_READ_D = 2 // Read a full word
PT_READ_U = 3 // Read control info
PT_WRITE_I = 4 //Write a full word
PT_WRITE_D = 5 //Write a full word
PT_CONTINUE = 7 //Continue the process
PT_KILL = 8 //Terminate the process
PT_READ_GPR = 11 // Read GPR, CR, PSW
PT_READ_FPR = 12 // Read FPR
PT_READ_VR = 13 // Read VR
PT_WRITE_GPR = 14 // Write GPR, CR, PSW
PT_WRITE_FPR = 15 // Write FPR
PT_WRITE_VR = 16 // Write VR
PT_READ_BLOCK = 17 // Read storage
PT_WRITE_BLOCK = 19 // Write storage
PT_READ_GPRH = 20 // Read GPRH
PT_WRITE_GPRH = 21 // Write GPRH
PT_REGHSET = 22 // Read all GPRHs
PT_ATTACH = 30 // Attach to a process
PT_DETACH = 31 // Detach from a process
PT_REGSET = 32 // Read all GPRs
PT_REATTACH = 33 // Reattach to a process
PT_LDINFO = 34 // Read loader info
PT_MULTI = 35 // Multi process mode
PT_LD64INFO = 36 // RMODE64 Info Area
PT_BLOCKREQ = 40 // Block request
PT_THREAD_INFO = 60 // Read thread info
PT_THREAD_MODIFY = 61
PT_THREAD_READ_FOCUS = 62
PT_THREAD_WRITE_FOCUS = 63
PT_THREAD_HOLD = 64
PT_THREAD_SIGNAL = 65
PT_EXPLAIN = 66
PT_EVENTS = 67
PT_THREAD_INFO_EXTENDED = 68
PT_REATTACH2 = 71
PT_CAPTURE = 72
PT_UNCAPTURE = 73
PT_GET_THREAD_TCB = 74
PT_GET_ALET = 75
PT_SWAPIN = 76
PT_EXTENDED_EVENT = 98
PT_RECOVER = 99 // Debug a program check
PT_GPR0 = 0 // General purpose register 0
PT_GPR1 = 1 // General purpose register 1
PT_GPR2 = 2 // General purpose register 2
PT_GPR3 = 3 // General purpose register 3
PT_GPR4 = 4 // General purpose register 4
PT_GPR5 = 5 // General purpose register 5
PT_GPR6 = 6 // General purpose register 6
PT_GPR7 = 7 // General purpose register 7
PT_GPR8 = 8 // General purpose register 8
PT_GPR9 = 9 // General purpose register 9
PT_GPR10 = 10 // General purpose register 10
PT_GPR11 = 11 // General purpose register 11
PT_GPR12 = 12 // General purpose register 12
PT_GPR13 = 13 // General purpose register 13
PT_GPR14 = 14 // General purpose register 14
PT_GPR15 = 15 // General purpose register 15
PT_FPR0 = 16 // Floating point register 0
PT_FPR1 = 17 // Floating point register 1
PT_FPR2 = 18 // Floating point register 2
PT_FPR3 = 19 // Floating point register 3
PT_FPR4 = 20 // Floating point register 4
PT_FPR5 = 21 // Floating point register 5
PT_FPR6 = 22 // Floating point register 6
PT_FPR7 = 23 // Floating point register 7
PT_FPR8 = 24 // Floating point register 8
PT_FPR9 = 25 // Floating point register 9
PT_FPR10 = 26 // Floating point register 10
PT_FPR11 = 27 // Floating point register 11
PT_FPR12 = 28 // Floating point register 12
PT_FPR13 = 29 // Floating point register 13
PT_FPR14 = 30 // Floating point register 14
PT_FPR15 = 31 // Floating point register 15
PT_FPC = 32 // Floating point control register
PT_PSW = 40 // PSW
PT_PSW0 = 40 // Left half of the PSW
PT_PSW1 = 41 // Right half of the PSW
PT_CR0 = 42 // Control register 0
PT_CR1 = 43 // Control register 1
PT_CR2 = 44 // Control register 2
PT_CR3 = 45 // Control register 3
PT_CR4 = 46 // Control register 4
PT_CR5 = 47 // Control register 5
PT_CR6 = 48 // Control register 6
PT_CR7 = 49 // Control register 7
PT_CR8 = 50 // Control register 8
PT_CR9 = 51 // Control register 9
PT_CR10 = 52 // Control register 10
PT_CR11 = 53 // Control register 11
PT_CR12 = 54 // Control register 12
PT_CR13 = 55 // Control register 13
PT_CR14 = 56 // Control register 14
PT_CR15 = 57 // Control register 15
PT_GPRH0 = 58 // GP High register 0
PT_GPRH1 = 59 // GP High register 1
PT_GPRH2 = 60 // GP High register 2
PT_GPRH3 = 61 // GP High register 3
PT_GPRH4 = 62 // GP High register 4
PT_GPRH5 = 63 // GP High register 5
PT_GPRH6 = 64 // GP High register 6
PT_GPRH7 = 65 // GP High register 7
PT_GPRH8 = 66 // GP High register 8
PT_GPRH9 = 67 // GP High register 9
PT_GPRH10 = 68 // GP High register 10
PT_GPRH11 = 69 // GP High register 11
PT_GPRH12 = 70 // GP High register 12
PT_GPRH13 = 71 // GP High register 13
PT_GPRH14 = 72 // GP High register 14
PT_GPRH15 = 73 // GP High register 15
PT_VR0 = 74 // Vector register 0
PT_VR1 = 75 // Vector register 1
PT_VR2 = 76 // Vector register 2
PT_VR3 = 77 // Vector register 3
PT_VR4 = 78 // Vector register 4
PT_VR5 = 79 // Vector register 5
PT_VR6 = 80 // Vector register 6
PT_VR7 = 81 // Vector register 7
PT_VR8 = 82 // Vector register 8
PT_VR9 = 83 // Vector register 9
PT_VR10 = 84 // Vector register 10
PT_VR11 = 85 // Vector register 11
PT_VR12 = 86 // Vector register 12
PT_VR13 = 87 // Vector register 13
PT_VR14 = 88 // Vector register 14
PT_VR15 = 89 // Vector register 15
PT_VR16 = 90 // Vector register 16
PT_VR17 = 91 // Vector register 17
PT_VR18 = 92 // Vector register 18
PT_VR19 = 93 // Vector register 19
PT_VR20 = 94 // Vector register 20
PT_VR21 = 95 // Vector register 21
PT_VR22 = 96 // Vector register 22
PT_VR23 = 97 // Vector register 23
PT_VR24 = 98 // Vector register 24
PT_VR25 = 99 // Vector register 25
PT_VR26 = 100 // Vector register 26
PT_VR27 = 101 // Vector register 27
PT_VR28 = 102 // Vector register 28
PT_VR29 = 103 // Vector register 29
PT_VR30 = 104 // Vector register 30
PT_VR31 = 105 // Vector register 31
PT_PSWG = 106 // PSWG
PT_PSWG0 = 106 // Bytes 0-3
PT_PSWG1 = 107 // Bytes 4-7
PT_PSWG2 = 108 // Bytes 8-11 (IA high word)
PT_PSWG3 = 109 // Bytes 12-15 (IA low word)
)
func Bpx4ptr(request int32, pid int32, addr unsafe.Pointer, data unsafe.Pointer, buffer unsafe.Pointer) (rv int32, rc int32, rn int32) {
var parms [8]unsafe.Pointer
parms[0] = unsafe.Pointer(&request)
parms[1] = unsafe.Pointer(&pid)
parms[2] = unsafe.Pointer(&addr)
parms[3] = unsafe.Pointer(&data)
parms[4] = unsafe.Pointer(&buffer)
parms[5] = unsafe.Pointer(&rv)
parms[6] = unsafe.Pointer(&rc)
parms[7] = unsafe.Pointer(&rn)
bpxcall(parms[:], BPX4PTR)
return rv, rc, rn
}
func copyU8(val uint8, dest []uint8) int {
if len(dest) < 1 {
return 0
}
dest[0] = val
return 1
}
func copyU8Arr(src, dest []uint8) int {
if len(dest) < len(src) {
return 0
}
for i, v := range src {
dest[i] = v
}
return len(src)
}
func copyU16(val uint16, dest []uint16) int {
if len(dest) < 1 {
return 0
}
dest[0] = val
return 1
}
func copyU32(val uint32, dest []uint32) int {
if len(dest) < 1 {
return 0
}
dest[0] = val
return 1
}
func copyU32Arr(src, dest []uint32) int {
if len(dest) < len(src) {
return 0
}
for i, v := range src {
dest[i] = v
}
return len(src)
}
func copyU64(val uint64, dest []uint64) int {
if len(dest) < 1 {
return 0
}
dest[0] = val
return 1
}
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