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syscall: add Mmap, Munmap on Linux, FreeBSD, OS X

Browse Source 
* tweak mksyscall*.pl to be more gofmt-compatible.
* add mkall.sh -syscalls option.
* add sys/mman.h constants on OS X

R=r, eds, niemeyer
CC=golang-dev
https://golang.org/cl/4369044
This commit is contained in:
Russ Cox 2011-04-06 17:52:02 -04:00
parent c45a08e5ba
commit 48ae1f2d9b
22 changed files with 343 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.hgignore
View File

@ -21,6 +21,8 @@ _cgo_*
_obj
_test
_testmain.go
build.out
test.out
y.tab.[ch]
doc/htmlgen
doc/codelab/wiki/*.bin

30
src/pkg/syscall/asm_darwin_386.s
View File

@ -61,6 +61,36 @@ ok6:
CALL runtime·exitsyscall(SB)
RET
TEXT ·Syscall9(SB),7,$0
CALL runtime·entersyscall(SB)
MOVL 4(SP), AX // syscall entry
// slide args down on top of system call number
LEAL 8(SP), SI
LEAL 4(SP), DI
CLD
MOVSL
MOVSL
MOVSL
MOVSL
MOVSL
MOVSL
MOVSL
MOVSL
MOVSL
INT $0x80
JAE ok9
MOVL $-1, 44(SP) // r1
MOVL $-1, 48(SP) // r2
MOVL AX, 52(SP) // errno
CALL runtime·exitsyscall(SB)
RET
ok9:
MOVL AX, 44(SP) // r1
MOVL DX, 48(SP) // r2
MOVL $0, 52(SP) // errno
CALL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),7,$0
MOVL 4(SP), AX // syscall entry
// slide args down on top of system call number

7
src/pkg/syscall/mkall.sh
View File

@ -81,6 +81,13 @@ mkerrors="./mkerrors.sh"
run="sh"
case "$1" in
-syscalls)
for i in zsyscall*go
do
sed 1q $i | sed 's;^// ;;' | sh | gofmt >_$i && mv _$i $i
done
exit 0
;;
-n)
run="cat"
shift

1
src/pkg/syscall/mkerrors.sh
View File

@ -45,6 +45,7 @@ includes_Darwin='
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <net/if.h>
#include <net/route.h>

5
src/pkg/syscall/mksyscall.pl
View File

@ -143,6 +143,11 @@ while(<>) {
while(@args < 6) {
push @args, "0";
}
} elsif(@args <= 9) {
$asm .= "9";
while(@args < 9) {
push @args, "0";
}
} else {
print STDERR "$ARGV:$.: too many arguments to system call\n";
}

12
src/pkg/syscall/mksyscall_windows.pl
View File

@ -119,7 +119,14 @@ while(<>) {
$vars .= sprintf "\t%s = getSysProcAddr(%s, \"%s\")\n", $sysvarname, $modvname, $sysname;
# Go function header.
$text .= sprintf "func %s(%s) (%s) {\n", $func, join(', ', @in), join(', ', @out);
my $out = join(', ', @out);
if($out ne "") {
$out = " ($out)";
}
if($text ne "") {
$text .= "\n"
}
$text .= sprintf "func %s(%s)%s {\n", $func, join(', ', @in), $out;
# Prepare arguments to Syscall.
my @args = ();
@ -232,6 +239,7 @@ while(<>) {
$failexpr = "$name $failcond";
}
}
$failexpr =~ s/(=)([0-9A-Za-z\-+])/\1 \2/; # gofmt compatible
if($name eq "errno") {
# Set errno to "last error" only if returned value indicate failure
$body .= "\tif $failexpr {\n";
@ -259,7 +267,7 @@ while(<>) {
}
$text .= "\treturn\n";
$text .= "}\n\n";
$text .= "}\n";
}
if($errors) {

65
src/pkg/syscall/syscall.go
View File

@ -13,6 +13,11 @@
// errno is an operating system error number describing the failure.
package syscall
import (
"sync"
"unsafe"
)
// StringByteSlice returns a NUL-terminated slice of bytes
// containing the text of s.
func StringByteSlice(s string) []byte {
@ -28,3 +33,63 @@ func StringBytePtr(s string) *byte { return &StringByteSlice(s)[0] }
// Single-word zero for use when we need a valid pointer to 0 bytes.
// See mksyscall.sh.
var _zero uintptr
// Mmap manager, for use by operating system-specific implementations.
type mmapper struct {
sync.Mutex
active map[*byte][]byte // active mappings; key is last byte in mapping
mmap func(addr, length uintptr, prot, flags, fd int, offset int64) (uintptr, int)
munmap func(addr uintptr, length uintptr) int
}
func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, errno int) {
if length <= 0 {
return nil, EINVAL
}
// Map the requested memory.
addr, errno := m.mmap(0, uintptr(length), prot, flags, fd, offset)
if errno != 0 {
return nil, errno
}
// Slice memory layout
var sl = struct {
addr uintptr
len int
cap int
}{addr, length, length}
// Use unsafe to turn sl into a []byte.
b := *(*[]byte)(unsafe.Pointer(&sl))
// Register mapping in m and return it.
p := &b[cap(b)-1]
m.Lock()
defer m.Unlock()
m.active[p] = b
return b, 0
}
func (m *mmapper) Munmap(data []byte) (errno int) {
if len(data) == 0 || len(data) != cap(data) {
return EINVAL
}
// Find the base of the mapping.
p := &data[cap(data)-1]
m.Lock()
defer m.Unlock()
b := m.active[p]
if b == nil || &b[0] != &data[0] {
return EINVAL
}
// Unmap the memory and update m.
if errno := m.munmap(uintptr(unsafe.Pointer(&b[0])), uintptr(len(b))); errno != 0 {
return errno
}
m.active[p] = nil, false
return 0
}

18
src/pkg/syscall/syscall_bsd.go
View File

@ -598,5 +598,21 @@ func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (errno int) {
// Madvise(addr *byte, len int, behav int) (errno int)
// Mprotect(addr *byte, len int, prot int) (errno int)
// Msync(addr *byte, len int, flags int) (errno int)
// Munmap(addr *byte, len int) (errno int)
// Ptrace(req int, pid int, addr uintptr, data int) (ret uintptr, errno int)
//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, errno int)
//sys munmap(addr uintptr, length uintptr) (errno int)
var mapper = &mmapper{
active: make(map[*byte][]byte),
mmap: mmap,
munmap: munmap,
}
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, errno int) {
return mapper.Mmap(fd, offset, length, prot, flags)
}
func Munmap(b []byte) (errno int) {
return mapper.Munmap(b)
}

2
src/pkg/syscall/syscall_darwin_386.go
View File

@ -39,3 +39,5 @@ func SetKevent(k *Kevent_t, fd, mode, flags int) {
k.Filter = int16(mode)
k.Flags = uint16(flags)
}
func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr) // sic

17
src/pkg/syscall/syscall_linux.go
View File

@ -797,6 +797,23 @@ func ParseDirent(buf []byte, max int, names []string) (consumed int, count int,
//sys read(fd int, p *byte, np int) (n int, errno int)
//sys write(fd int, p *byte, np int) (n int, errno int)
// mmap varies by architecutre; see syscall_linux_*.go.
//sys munmap(addr uintptr, length uintptr) (errno int)
var mapper = &mmapper{
active: make(map[*byte][]byte),
mmap: mmap,
munmap: munmap,
}
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, errno int) {
return mapper.Mmap(fd, offset, length, prot, flags)
}
func Munmap(b []byte) (errno int) {
return mapper.Munmap(b)
}
/*
* Unimplemented
*/

10
src/pkg/syscall/syscall_linux_386.go
View File

@ -56,6 +56,16 @@ func NsecToTimeval(nsec int64) (tv Timeval) {
//sysnb setgroups(n int, list *_Gid_t) (errno int) = SYS_SETGROUPS32
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, errno int) = SYS__NEWSELECT
//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, errno int)
func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int) {
page := uintptr(offset / 4096)
if offset != int64(page)*4096 {
return 0, EINVAL
}
return mmap2(addr, length, prot, flags, fd, page)
}
// Underlying system call writes to newoffset via pointer.
// Implemented in assembly to avoid allocation.
func Seek(fd int, offset int64, whence int) (newoffset int64, errno int)

1
src/pkg/syscall/syscall_linux_amd64.go
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@ -50,6 +50,7 @@ package syscall
//sys sendto(s int, buf []byte, flags int, to uintptr, addrlen _Socklen) (errno int)
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, errno int)
//sys sendmsg(s int, msg *Msghdr, flags int) (errno int)
//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int)
func Getpagesize() int { return 4096 }

10
src/pkg/syscall/syscall_linux_arm.go
View File

@ -98,6 +98,16 @@ func Seek(fd int, offset int64, whence int) (newoffset int64, errno int)
//sysnb Gettimeofday(tv *Timeval) (errno int)
//sysnb Time(t *Time_t) (tt Time_t, errno int)
//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, errno int)
func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int) {
page := uintptr(offset / 4096)
if offset != int64(page)*4096 {
return 0, EINVAL
}
return mmap2(addr, length, prot, flags, fd, page)
}
// TODO(kaib): add support for tracing
func (r *PtraceRegs) PC() uint64 { return 0 }

29
src/pkg/syscall/zerrors_darwin_386.go
View File

@ -196,7 +196,6 @@ const (
F_GETLK = 0x7
F_GETOWN = 0x5
F_GETPATH = 0x32
F_GETPROTECTIONCLASS = 0x3e
F_GLOBAL_NOCACHE = 0x37
F_LOG2PHYS = 0x31
F_MARKDEPENDENCY = 0x3c
@ -213,7 +212,6 @@ const (
F_SETLK = 0x8
F_SETLKW = 0x9
F_SETOWN = 0x6
F_SETPROTECTIONCLASS = 0x3f
F_SETSIZE = 0x2b
F_THAW_FS = 0x36
F_UNLCK = 0x2
@ -461,6 +459,20 @@ const (
IP_TOS = 0x3
IP_TRAFFIC_MGT_BACKGROUND = 0x41
IP_TTL = 0x4
MAP_ANON = 0x1000
MAP_COPY = 0x2
MAP_FILE = 0
MAP_FIXED = 0x10
MAP_HASSEMAPHORE = 0x200
MAP_NOCACHE = 0x400
MAP_NOEXTEND = 0x100
MAP_NORESERVE = 0x40
MAP_PRIVATE = 0x2
MAP_RENAME = 0x20
MAP_RESERVED0080 = 0x80
MAP_SHARED = 0x1
MCL_CURRENT = 0x1
MCL_FUTURE = 0x2
MSG_CTRUNC = 0x20
MSG_DONTROUTE = 0x4
MSG_DONTWAIT = 0x80
@ -477,6 +489,11 @@ const (
MSG_TRUNC = 0x10
MSG_WAITALL = 0x40
MSG_WAITSTREAM = 0x200
MS_ASYNC = 0x1
MS_DEACTIVATE = 0x8
MS_INVALIDATE = 0x2
MS_KILLPAGES = 0x4
MS_SYNC = 0x10
NAME_MAX = 0xff
NET_RT_DUMP = 0x1
NET_RT_DUMP2 = 0x7
@ -509,6 +526,10 @@ const (
O_SYNC = 0x80
O_TRUNC = 0x400
O_WRONLY = 0x1
PROT_EXEC = 0x4
PROT_NONE = 0
PROT_READ = 0x1
PROT_WRITE = 0x2
RTAX_AUTHOR = 0x6
RTAX_BRD = 0x7
RTAX_DST = 0
@ -535,7 +556,6 @@ const (
RTF_DYNAMIC = 0x10
RTF_GATEWAY = 0x2
RTF_HOST = 0x4
RTF_IFREF = 0x4000000
RTF_IFSCOPE = 0x1000000
RTF_LLINFO = 0x400
RTF_LOCAL = 0x200000
@ -629,7 +649,6 @@ const (
SIOCDIFADDR = 0x80206919
SIOCDIFPHYADDR = 0x80206941
SIOCDLIFADDR = 0x8118691f
SIOCGDRVSPEC = 0xc01c697b
SIOCGETSGCNT = 0xc014721c
SIOCGETVIFCNT = 0xc014721b
SIOCGETVLAN = 0xc020697f
@ -661,10 +680,8 @@ const (
SIOCGLOWAT = 0x40047303
SIOCGPGRP = 0x40047309
SIOCIFCREATE = 0xc0206978
SIOCIFCREATE2 = 0xc020697a
SIOCIFDESTROY = 0x80206979
SIOCRSLVMULTI = 0xc008693b
SIOCSDRVSPEC = 0x801c697b
SIOCSETVLAN = 0x8020697e
SIOCSHIWAT = 0x80047300
SIOCSIFADDR = 0x8020690c

29
src/pkg/syscall/zerrors_darwin_amd64.go
View File

@ -196,7 +196,6 @@ const (
F_GETLK = 0x7
F_GETOWN = 0x5
F_GETPATH = 0x32
F_GETPROTECTIONCLASS = 0x3e
F_GLOBAL_NOCACHE = 0x37
F_LOG2PHYS = 0x31
F_MARKDEPENDENCY = 0x3c
@ -213,7 +212,6 @@ const (
F_SETLK = 0x8
F_SETLKW = 0x9
F_SETOWN = 0x6
F_SETPROTECTIONCLASS = 0x3f
F_SETSIZE = 0x2b
F_THAW_FS = 0x36
F_UNLCK = 0x2
@ -461,6 +459,20 @@ const (
IP_TOS = 0x3
IP_TRAFFIC_MGT_BACKGROUND = 0x41
IP_TTL = 0x4
MAP_ANON = 0x1000
MAP_COPY = 0x2
MAP_FILE = 0
MAP_FIXED = 0x10
MAP_HASSEMAPHORE = 0x200
MAP_NOCACHE = 0x400
MAP_NOEXTEND = 0x100
MAP_NORESERVE = 0x40
MAP_PRIVATE = 0x2
MAP_RENAME = 0x20
MAP_RESERVED0080 = 0x80
MAP_SHARED = 0x1
MCL_CURRENT = 0x1
MCL_FUTURE = 0x2
MSG_CTRUNC = 0x20
MSG_DONTROUTE = 0x4
MSG_DONTWAIT = 0x80
@ -477,6 +489,11 @@ const (
MSG_TRUNC = 0x10
MSG_WAITALL = 0x40
MSG_WAITSTREAM = 0x200
MS_ASYNC = 0x1
MS_DEACTIVATE = 0x8
MS_INVALIDATE = 0x2
MS_KILLPAGES = 0x4
MS_SYNC = 0x10
NAME_MAX = 0xff
NET_RT_DUMP = 0x1
NET_RT_DUMP2 = 0x7
@ -509,6 +526,10 @@ const (
O_SYNC = 0x80
O_TRUNC = 0x400
O_WRONLY = 0x1
PROT_EXEC = 0x4
PROT_NONE = 0
PROT_READ = 0x1
PROT_WRITE = 0x2
RTAX_AUTHOR = 0x6
RTAX_BRD = 0x7
RTAX_DST = 0
@ -535,7 +556,6 @@ const (
RTF_DYNAMIC = 0x10
RTF_GATEWAY = 0x2
RTF_HOST = 0x4
RTF_IFREF = 0x4000000
RTF_IFSCOPE = 0x1000000
RTF_LLINFO = 0x400
RTF_LOCAL = 0x200000
@ -629,7 +649,6 @@ const (
SIOCDIFADDR = 0x80206919
SIOCDIFPHYADDR = 0x80206941
SIOCDLIFADDR = 0x8118691f
SIOCGDRVSPEC = 0xc028697b
SIOCGETSGCNT = 0xc014721c
SIOCGETVIFCNT = 0xc014721b
SIOCGETVLAN = 0xc020697f
@ -661,10 +680,8 @@ const (
SIOCGLOWAT = 0x40047303
SIOCGPGRP = 0x40047309
SIOCIFCREATE = 0xc0206978
SIOCIFCREATE2 = 0xc020697a
SIOCIFDESTROY = 0x80206979
SIOCRSLVMULTI = 0xc010693b
SIOCSDRVSPEC = 0x8028697b
SIOCSETVLAN = 0x8020697e
SIOCSHIWAT = 0x80047300
SIOCSIFADDR = 0x8020690c

17
src/pkg/syscall/zsyscall_darwin_386.go
View File

@ -202,6 +202,23 @@ func fcntl(fd int, cmd int, arg int) (val int, errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, errno int) {
r0, _, e1 := Syscall9(SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos), uintptr(pos>>32), 0, 0)
ret = uintptr(r0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func munmap(addr uintptr, length uintptr) (errno int) {
_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func kill(pid int, signum int, posix int) (errno int) {
_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), uintptr(posix))
errno = int(e1)

17
src/pkg/syscall/zsyscall_darwin_amd64.go
View File

@ -202,6 +202,23 @@ func fcntl(fd int, cmd int, arg int) (val int, errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, errno int) {
r0, _, e1 := Syscall6(SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos))
ret = uintptr(r0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func munmap(addr uintptr, length uintptr) (errno int) {
_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func kill(pid int, signum int, posix int) (errno int) {
_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), uintptr(posix))
errno = int(e1)

17
src/pkg/syscall/zsyscall_freebsd_386.go
View File

@ -202,6 +202,23 @@ func fcntl(fd int, cmd int, arg int) (val int, errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, errno int) {
r0, _, e1 := Syscall9(SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos), uintptr(pos>>32), 0, 0)
ret = uintptr(r0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func munmap(addr uintptr, length uintptr) (errno int) {
_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Access(path string, mode uint32) (errno int) {
_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(mode), 0)
errno = int(e1)

17
src/pkg/syscall/zsyscall_freebsd_amd64.go
View File

@ -202,6 +202,23 @@ func fcntl(fd int, cmd int, arg int) (val int, errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, errno int) {
r0, _, e1 := Syscall6(SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos))
ret = uintptr(r0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func munmap(addr uintptr, length uintptr) (errno int) {
_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Access(path string, mode uint32) (errno int) {
_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(mode), 0)
errno = int(e1)

17
src/pkg/syscall/zsyscall_linux_386.go
View File

@ -765,6 +765,14 @@ func write(fd int, p *byte, np int) (n int, errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func munmap(addr uintptr, length uintptr) (errno int) {
_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Chown(path string, uid int, gid int) (errno int) {
_, _, e1 := Syscall(SYS_CHOWN32, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(uid), uintptr(gid))
errno = int(e1)
@ -1006,6 +1014,15 @@ func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, errno int) {
r0, _, e1 := Syscall6(SYS_MMAP2, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(pageOffset))
xaddr = uintptr(r0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Gettimeofday(tv *Timeval) (errno int) {
_, _, e1 := RawSyscall(SYS_GETTIMEOFDAY, uintptr(unsafe.Pointer(tv)), 0, 0)
errno = int(e1)

17
src/pkg/syscall/zsyscall_linux_amd64.go
View File

@ -765,6 +765,14 @@ func write(fd int, p *byte, np int) (n int, errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func munmap(addr uintptr, length uintptr) (errno int) {
_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Chown(path string, uid int, gid int) (errno int) {
_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(uid), uintptr(gid))
errno = int(e1)
@ -1164,3 +1172,12 @@ func sendmsg(s int, msg *Msghdr, flags int) (errno int) {
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int) {
r0, _, e1 := Syscall6(SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset))
xaddr = uintptr(r0)
errno = int(e1)
return
}

17
src/pkg/syscall/zsyscall_linux_arm.go
View File

@ -765,6 +765,14 @@ func write(fd int, p *byte, np int) (n int, errno int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func munmap(addr uintptr, length uintptr) (errno int) {
_, _, e1 := Syscall(SYS_MUNMAP, uintptr(addr), uintptr(length), 0)
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int) {
r0, _, e1 := Syscall(SYS_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)))
fd = int(r0)
@ -1118,3 +1126,12 @@ func Time(t *Time_t) (tt Time_t, errno int) {
errno = int(e1)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, errno int) {
r0, _, e1 := Syscall6(SYS_MMAP2, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(pageOffset))
xaddr = uintptr(r0)
errno = int(e1)
return
}