1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
#!/usr/bin/env bash
# Copyright 2009 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.
# The syscall package provides access to the raw system call
# interface of the underlying operating system. Porting Go to
# a new architecture/operating system combination requires
# some manual effort, though there are tools that automate
# much of the process. The auto-generated files have names
# beginning with z.
#
# This script runs or (given -n) prints suggested commands to generate z files
# for the current system. Running those commands is not automatic.
# This script is documentation more than anything else.
#
# * asm_${GOOS}_${GOARCH}.s
#
# This hand-written assembly file implements system call dispatch.
# There are three entry points:
#
# func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
# func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);
# func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
#
# The first and second are the standard ones; they differ only in
# how many arguments can be passed to the kernel.
# The third is for low-level use by the ForkExec wrapper;
# unlike the first two, it does not call into the scheduler to
# let it know that a system call is running.
#
# * syscall_${GOOS}.go
#
# This hand-written Go file implements system calls that need
# special handling and lists "//sys" comments giving prototypes
# for ones that can be auto-generated. Mksyscall reads those
# comments to generate the stubs.
#
# * syscall_${GOOS}_${GOARCH}.go
#
# Same as syscall_${GOOS}.go except that it contains code specific
# to ${GOOS} on one particular architecture.
#
# * types_${GOOS}.c
#
# This hand-written C file includes standard C headers and then
# creates typedef or enum names beginning with a dollar sign
# (use of $ in variable names is a gcc extension). The hardest
# part about preparing this file is figuring out which headers to
# include and which symbols need to be #defined to get the
# actual data structures that pass through to the kernel system calls.
# Some C libraries present alternate versions for binary compatibility
# and translate them on the way in and out of system calls, but
# there is almost always a #define that can get the real ones.
# See types_darwin.c and types_linux.c for examples.
#
# * zerror_${GOOS}_${GOARCH}.go
#
# This machine-generated file defines the system's error numbers,
# error strings, and signal numbers. The generator is "mkerrors.sh".
# Usually no arguments are needed, but mkerrors.sh will pass its
# arguments on to godefs.
#
# * zsyscall_${GOOS}_${GOARCH}.go
#
# Generated by mksyscall.sh; see syscall_${GOOS}.go above.
#
# * zsysnum_${GOOS}_${GOARCH}.go
#
# Generated by mksysnum_${GOOS}.
#
# * ztypes_${GOOS}_${GOARCH}.go
#
# Generated by godefs; see types_${GOOS}.c above.
GOOSARCH="${GOOS}_${GOARCH}"
# defaults
mksyscall="mksyscall.sh"
mkerrors="mkerrors.sh"
run="sh"
case "$1" in
-n)
run="cat"
shift
esac
case "$#" in
0)
;;
*)
echo 'usage: mkall.sh [-n]' 1>&2
exit 2
esac
case "$GOOSARCH" in
_* | *_ | _)
echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2
exit 1
;;
freebsd_amd64)
mksysnum="mksysnum_freebsd.sh /usr/src/sys/kern/syscalls.master"
mktypes="godefs -gsyscall -f-m64"
;;
darwin_386)
mksyscall="mksyscall.sh -l32"
mksysnum="mksysnum_darwin.sh /home/rsc/pub/xnu-1228/bsd/kern/syscalls.master"
mktypes="godefs -gsyscall -f-m32"
;;
darwin_amd64)
mksysnum="mksysnum_darwin.sh /home/rsc/pub/xnu-1228/bsd/kern/syscalls.master"
mktypes="godefs -gsyscall -f-m64"
mkerrors="mkerrors.sh"
;;
linux_386)
mksyscall="mksyscall.sh -l32"
mksysnum="mksysnum_linux.sh /usr/include/asm/unistd_32.h"
mktypes="godefs -gsyscall -f-m32"
;;
linux_amd64)
mksysnum="mksysnum_linux.sh /usr/include/asm/unistd_64.h"
mktypes="godefs -gsyscall -f-m64"
;;
nacl_386)
NACL="/home/rsc/pub/nacl/native_client"
NACLRUN="$NACL/src/trusted/service_runtime"
NACLSDK="$NACL/src/third_party/nacl_sdk/linux/sdk/nacl-sdk/nacl"
mksyscall="mksyscall.sh -l32"
mksysnum="mksysnum_nacl.sh $NACLRUN/include/bits/nacl_syscalls.h"
mktypes="godefs -gsyscall -f-m32 -f-I$NACLSDK/include -f-I$NACL"
mkerrors="mkerrors_nacl.sh $NACLRUN/include/sys/errno.h"
;;
linux_arm)
ARM="/home/kaib/public/linux-2.6.28"
mksyscall="mksyscall.sh -l32"
mksysnum="mksysnum_linux.sh $ARM/arch/arm/include/asm/unistd.h"
// mktypes="godefs -gsyscall -carm-gcc -f-I$ARM/arch/arm/include -f-I$ARM/include -f-D__deprecated='' -f-I$ARM/arch/arm/mach-at91/include -f-DCONFIG_ARCH_AT91SAM9260 "
mktypes="godefs -gsyscall -carm-gcc"
mkerrors="mkerrors.sh"
;;
*)
echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2
exit 1
;;
esac
(
echo "$mkerrors |gofmt >zerrors_$GOOSARCH.go"
echo "$mksyscall syscall_$GOOS.go syscall_$GOOSARCH.go |gofmt >zsyscall_$GOOSARCH.go"
echo "$mksysnum |gofmt >zsysnum_$GOOSARCH.go"
echo "$mktypes types_$GOOS.c |gofmt >ztypes_$GOOSARCH.go"
) | $run
|
