freebsd-skq/sys/kern/makesyscalls.sh

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#! /bin/sh -
# @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93
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# $FreeBSD$
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set -e
# name of compat options:
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compat=COMPAT_43
compat4=COMPAT_FREEBSD4
compat6=COMPAT_FREEBSD6
compat7=COMPAT_FREEBSD7
compat10=COMPAT_FREEBSD10
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# output files:
sysnames="syscalls.c"
sysproto="../sys/sysproto.h"
sysproto_h=_SYS_SYSPROTO_H_
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syshdr="../sys/syscall.h"
sysmk="../sys/syscall.mk"
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syssw="init_sysent.c"
syscallprefix="SYS_"
switchname="sysent"
namesname="syscallnames"
systrace="systrace_args.c"
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# tmp files:
sysaue="sysent.aue.$$"
sysdcl="sysent.dcl.$$"
syscompat="sysent.compat.$$"
syscompatdcl="sysent.compatdcl.$$"
syscompat4="sysent.compat4.$$"
syscompat4dcl="sysent.compat4dcl.$$"
syscompat6="sysent.compat6.$$"
syscompat6dcl="sysent.compat6dcl.$$"
syscompat7="sysent.compat7.$$"
syscompat7dcl="sysent.compat7dcl.$$"
syscompat10="sysent.compat10.$$"
syscompat10dcl="sysent.compat10dcl.$$"
sysent="sysent.switch.$$"
sysinc="sysinc.switch.$$"
sysarg="sysarg.switch.$$"
sysprotoend="sysprotoend.$$"
systracetmp="systrace.$$"
systraceret="systraceret.$$"
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if [ -r capabilities.conf ]; then
capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
capenabled=`echo $capenabled | sed 's/ /,/g'`
else
capenabled=""
fi
trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret" 0
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touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret
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case $# in
0) echo "usage: $0 input-file <config-file>" 1>&2
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exit 1
;;
esac
if [ -n "$2" ]; then
. $2
fi
sed -e '
s/\$//g
:join
/\\$/{a\
N
s/\\\n//
b join
}
2,${
/^#/!s/\([{}()*,]\)/ \1 /g
}
' < $1 | awk "
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BEGIN {
sysaue = \"$sysaue\"
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sysdcl = \"$sysdcl\"
sysproto = \"$sysproto\"
sysprotoend = \"$sysprotoend\"
sysproto_h = \"$sysproto_h\"
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syscompat = \"$syscompat\"
syscompatdcl = \"$syscompatdcl\"
syscompat4 = \"$syscompat4\"
syscompat4dcl = \"$syscompat4dcl\"
syscompat6 = \"$syscompat6\"
syscompat6dcl = \"$syscompat6dcl\"
syscompat7 = \"$syscompat7\"
syscompat7dcl = \"$syscompat7dcl\"
syscompat10 = \"$syscompat10\"
syscompat10dcl = \"$syscompat10dcl\"
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sysent = \"$sysent\"
syssw = \"$syssw\"
sysinc = \"$sysinc\"
sysarg = \"$sysarg\"
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sysnames = \"$sysnames\"
syshdr = \"$syshdr\"
sysmk = \"$sysmk\"
systrace = \"$systrace\"
systracetmp = \"$systracetmp\"
systraceret = \"$systraceret\"
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compat = \"$compat\"
compat4 = \"$compat4\"
compat6 = \"$compat6\"
compat7 = \"$compat7\"
compat10 = \"$compat10\"
syscallprefix = \"$syscallprefix\"
switchname = \"$switchname\"
namesname = \"$namesname\"
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infile = \"$1\"
capenabled_string = \"$capenabled\"
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"'
split(capenabled_string, capenabled, ",");
printf "/*\n * System call switch table.\n *\n" > syssw
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
printf " * $%s$\n", "FreeBSD" > syssw
printf "/*\n * System call prototypes.\n *\n" > sysarg
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
printf " * $%s$\n", "FreeBSD" > sysarg
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printf "\n#ifdef %s\n\n", compat > syscompat
printf "\n#ifdef %s\n\n", compat4 > syscompat4
printf "\n#ifdef %s\n\n", compat6 > syscompat6
printf "\n#ifdef %s\n\n", compat7 > syscompat7
printf "\n#ifdef %s\n\n", compat10 > syscompat10
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printf "/*\n * System call names.\n *\n" > sysnames
printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
printf " * $%s$\n", "FreeBSD" > sysnames
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printf "/*\n * System call numbers.\n *\n" > syshdr
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
printf " * $%s$\n", "FreeBSD" > syshdr
printf "# FreeBSD system call object files.\n" > sysmk
printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
printf "# $%s$\n", "FreeBSD" > sysmk
printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
printf " * $%s$\n", "FreeBSD" > systrace
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}
NR == 1 {
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gsub("[$]FreeBSD: ", "", $0)
gsub(" [$]", "", $0)
printf " * created from%s\n */\n\n", $0 > syssw
printf "\n/* The casts are bogus but will do for now. */\n" > sysent
printf "struct sysent %s[] = {\n",switchname > sysent
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printf " * created from%s\n */\n\n", $0 > sysarg
printf "#ifndef %s\n", sysproto_h > sysarg
printf "#define\t%s\n\n", sysproto_h > sysarg
printf "#include <sys/signal.h>\n" > sysarg
printf "#include <sys/acl.h>\n" > sysarg
printf "#include <sys/cpuset.h>\n" > sysarg
printf "#include <sys/_ffcounter.h>\n" > sysarg
printf "#include <sys/_semaphore.h>\n" > sysarg
printf "#include <sys/ucontext.h>\n" > sysarg
printf "#include <sys/wait.h>\n\n" > sysarg
printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
printf "struct proc;\n\n" > sysarg
printf "struct thread;\n\n" > sysarg
printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
printf "#define\tPADL_(t)\t0\n" > sysarg
printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
printf "#else\n" > sysarg
printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
printf "#define\tPADR_(t)\t0\n" > sysarg
printf "#endif\n\n" > sysarg
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printf " * created from%s\n */\n\n", $0 > sysnames
printf "const char *%s[] = {\n", namesname > sysnames
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printf " * created from%s\n */\n\n", $0 > syshdr
printf "# created from%s\nMIASM = ", $0 > sysmk
printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
printf "\tint64_t *iarg = (int64_t *) uarg;\n" > systrace
printf "\tswitch (sysnum) {\n" > systrace
printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
printf "\tswitch (sysnum) {\n" > systracetmp
printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
printf "\tswitch (sysnum) {\n" > systraceret
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next
}
NF == 0 || $1 ~ /^;/ {
next
}
$1 ~ /^#[ ]*include/ {
print > sysinc
next
}
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$1 ~ /^#[ ]*if/ {
print > sysent
print > sysdcl
print > sysarg
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print > syscompat
print > syscompat4
print > syscompat6
print > syscompat7
print > syscompat10
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print > sysnames
print > systrace
print > systracetmp
print > systraceret
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savesyscall = syscall
next
}
$1 ~ /^#[ ]*else/ {
print > sysent
print > sysdcl
print > sysarg
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print > syscompat
print > syscompat4
print > syscompat6
print > syscompat7
print > syscompat10
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print > sysnames
print > systrace
print > systracetmp
print > systraceret
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syscall = savesyscall
next
}
$1 ~ /^#/ {
print > sysent
print > sysdcl
print > sysarg
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print > syscompat
print > syscompat4
print > syscompat6
print > syscompat7
print > syscompat10
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print > sysnames
print > systrace
print > systracetmp
print > systraceret
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next
}
syscall != $1 {
printf "%s: line %d: syscall number out of sync at %d\n",
infile, NR, syscall
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printf "line is:\n"
print
exit 1
}
# Returns true if the type "name" is the first flag in the type field
function type(name, flags, n) {
n = split($3, flags, /\|/)
return (n > 0 && flags[1] == name)
}
# Returns true if the flag "name" is set in the type field
function flag(name, flags, i, n) {
n = split($3, flags, /\|/)
for (i = 1; i <= n; i++)
if (flags[i] == name)
return 1
return 0
}
function align_sysent_comment(column) {
printf("\t") > sysent
column = column + 8 - column % 8
while (column < 56) {
printf("\t") > sysent
column = column + 8
}
}
function parserr(was, wanted) {
printf "%s: line %d: unexpected %s (expected %s)\n",
infile, NR, was, wanted
exit 1
}
function parseline() {
f=4 # toss number, type, audit event
argc= 0;
argssize = "0"
thr_flag = "SY_THR_STATIC"
if (flag("NOTSTATIC")) {
thr_flag = "SY_THR_ABSENT"
}
if ($NF != "}") {
funcalias=$(NF-2)
argalias=$(NF-1)
rettype=$NF
end=NF-3
} else {
funcalias=""
argalias=""
rettype="int"
end=NF
}
if (flag("NODEF")) {
auditev="AUE_NULL"
funcname=$4
argssize = "AS(" $6 ")"
return
}
if ($f != "{")
parserr($f, "{")
f++
if ($end != "}")
parserr($end, "}")
end--
if ($end != ";")
parserr($end, ";")
end--
if ($end != ")")
parserr($end, ")")
end--
syscallret=$f
f++
funcname=$f
#
# We now know the func name, so define a flags field for it.
# Do this before any other processing as we may return early
# from it.
#
for (cap in capenabled) {
if (funcname == capenabled[cap]) {
flags = "SYF_CAPENABLED";
break;
}
}
if (funcalias == "")
funcalias = funcname
if (argalias == "") {
argalias = funcname "_args"
if (flag("COMPAT"))
argalias = "o" argalias
if (flag("COMPAT4"))
argalias = "freebsd4_" argalias
if (flag("COMPAT6"))
argalias = "freebsd6_" argalias
if (flag("COMPAT7"))
argalias = "freebsd7_" argalias
if (flag("COMPAT10"))
argalias = "freebsd10_" argalias
}
f++
if ($f != "(")
parserr($f, ")")
f++
if (f == end) {
if ($f != "void")
parserr($f, "argument definition")
return
}
while (f <= end) {
argc++
argtype[argc]=""
oldf=""
while (f < end && $(f+1) != ",") {
if (argtype[argc] != "" && oldf != "*")
argtype[argc] = argtype[argc]" ";
argtype[argc] = argtype[argc]$f;
oldf = $f;
f++
}
if (argtype[argc] == "")
parserr($f, "argument definition")
argname[argc]=$f;
f += 2; # skip name, and any comma
}
if (argc != 0)
argssize = "AS(" argalias ")"
}
{ comment = $4
if (NF < 7)
for (i = 5; i <= NF; i++)
comment = comment " " $i
}
#
# The AUE_ audit event identifier.
#
{
auditev = $2;
}
#
# The flags, if any.
#
{
flags = "0";
}
type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
|| type("NOSTD") {
parseline()
printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
if (argc > 0) {
printf("\t\tswitch(ndx) {\n") > systracetmp
printf("\t\tstruct %s *p = params;\n", argalias) > systrace
for (i = 1; i <= argc; i++) {
arg = argtype[i]
sub("__restrict$", "", arg)
printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
if (index(arg, "*") > 0 || arg == "caddr_t")
printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
i - 1, \
argname[i], arg) > systrace
else if (arg == "union l_semun")
printf("\t\tuarg[%d] = p->%s.buf; /* %s */\n", \
i - 1, \
argname[i], arg) > systrace
else if (substr(arg, 1, 1) == "u" || arg == "size_t")
printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
i - 1, \
argname[i], arg) > systrace
else
printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
i - 1, \
argname[i], arg) > systrace
}
printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
printf("\t\tbreak;\n") > systraceret
}
printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
printf("\t\tbreak;\n") > systracetmp
if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
!flag("NODEF")) {
printf("struct %s {\n", argalias) > sysarg
for (i = 1; i <= argc; i++)
printf("\tchar %s_l_[PADL_(%s)]; " \
"%s %s; char %s_r_[PADR_(%s)];\n",
argname[i], argtype[i],
argtype[i], argname[i],
argname[i], argtype[i]) > sysarg
printf("};\n") > sysarg
}
else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
printf("struct %s {\n\tregister_t dummy;\n};\n",
argalias) > sysarg
if (!flag("NOPROTO") && !flag("NODEF")) {
if (funcname == "nosys" || funcname == "lkmnosys" ||
funcname == "sysarch" || funcname ~ /^freebsd/ ||
funcname ~ /^linux/ || funcname ~ /^svr4/ ||
Import the CloudABI datatypes and create a system call table. CloudABI is a pure capability-based runtime environment for UNIX. It works similar to Capsicum, except that processes already run in capabilities mode on startup. All functionality that conflicts with this model has been omitted, making it a compact binary interface that can be supported by other operating systems without too much effort. CloudABI is 'secure by default'; the idea is that it should be safe to run arbitrary third-party binaries without requiring any explicit hardware virtualization (Bhyve) or namespace virtualization (Jails). The rights of an application are purely determined by the set of file descriptors that you grant it on startup. The datatypes and constants used by CloudABI's C library (cloudlibc) are defined in separate files called syscalldefs_mi.h (pointer size independent) and syscalldefs_md.h (pointer size dependent). We import these files in sys/contrib/cloudabi and wrap around them in cloudabi*_syscalldefs.h. We then add stubs for all of the system calls in sys/compat/cloudabi or sys/compat/cloudabi64, depending on whether the system call depends on the pointer size. We only have nine system calls that depend on the pointer size. If we ever want to support 32-bit binaries, we can simply add sys/compat/cloudabi32 and implement these nine system calls again. The next step is to send in code reviews for the individual system call implementations, but also add a sysentvec, to allow CloudABI executabled to be started through execve(). More information about CloudABI: - GitHub: https://github.com/NuxiNL/cloudlibc - Talk at BSDCan: https://www.youtube.com/watch?v=SVdF84x1EdA Differential Revision: https://reviews.freebsd.org/D2848 Reviewed by: emaste, brooks Obtained from: https://github.com/NuxiNL/freebsd
2015-07-09 07:20:15 +00:00
funcname ~ /^ibcs2/ || funcname ~ /^xenix/ ||
funcname ~ /^cloudabi/) {
printf("%s\t%s(struct thread *, struct %s *)",
rettype, funcname, argalias) > sysdcl
} else {
printf("%s\tsys_%s(struct thread *, struct %s *)",
rettype, funcname, argalias) > sysdcl
}
printf(";\n") > sysdcl
printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
funcalias, auditev) > sysaue
}
printf("\t{ %s, (sy_call_t *)", argssize) > sysent
column = 8 + 2 + length(argssize) + 15
if (flag("NOSTD")) {
printf("lkmressys, AUE_NULL, NULL, 0, 0, %s, SY_THR_ABSENT },", flags) > sysent
column = column + length("lkmressys") + length("AUE_NULL") + 3
} else {
if (funcname == "nosys" || funcname == "sysarch" ||
funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
funcname ~ /^linux/ || funcname ~ /^svr4/ ||
Import the CloudABI datatypes and create a system call table. CloudABI is a pure capability-based runtime environment for UNIX. It works similar to Capsicum, except that processes already run in capabilities mode on startup. All functionality that conflicts with this model has been omitted, making it a compact binary interface that can be supported by other operating systems without too much effort. CloudABI is 'secure by default'; the idea is that it should be safe to run arbitrary third-party binaries without requiring any explicit hardware virtualization (Bhyve) or namespace virtualization (Jails). The rights of an application are purely determined by the set of file descriptors that you grant it on startup. The datatypes and constants used by CloudABI's C library (cloudlibc) are defined in separate files called syscalldefs_mi.h (pointer size independent) and syscalldefs_md.h (pointer size dependent). We import these files in sys/contrib/cloudabi and wrap around them in cloudabi*_syscalldefs.h. We then add stubs for all of the system calls in sys/compat/cloudabi or sys/compat/cloudabi64, depending on whether the system call depends on the pointer size. We only have nine system calls that depend on the pointer size. If we ever want to support 32-bit binaries, we can simply add sys/compat/cloudabi32 and implement these nine system calls again. The next step is to send in code reviews for the individual system call implementations, but also add a sysentvec, to allow CloudABI executabled to be started through execve(). More information about CloudABI: - GitHub: https://github.com/NuxiNL/cloudlibc - Talk at BSDCan: https://www.youtube.com/watch?v=SVdF84x1EdA Differential Revision: https://reviews.freebsd.org/D2848 Reviewed by: emaste, brooks Obtained from: https://github.com/NuxiNL/freebsd
2015-07-09 07:20:15 +00:00
funcname ~ /^ibcs2/ || funcname ~ /^xenix/ ||
funcname ~ /^cloudabi/) {
printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
column = column + length(funcname) + length(auditev) + length(flags) + 3
} else {
printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
}
}
align_sysent_comment(column)
printf("/* %d = %s */\n", syscall, funcalias) > sysent
printf("\t\"%s\",\t\t\t/* %d = %s */\n",
funcalias, syscall, funcalias) > sysnames
if (!flag("NODEF")) {
printf("#define\t%s%s\t%d\n", syscallprefix,
funcalias, syscall) > syshdr
printf(" \\\n\t%s.o", funcalias) > sysmk
}
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syscall++
next
}
type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
type("COMPAT7") || type("COMPAT10") {
if (flag("COMPAT")) {
ncompat++
out = syscompat
outdcl = syscompatdcl
wrap = "compat"
prefix = "o"
descr = "old"
} else if (flag("COMPAT4")) {
ncompat4++
out = syscompat4
outdcl = syscompat4dcl
wrap = "compat4"
prefix = "freebsd4_"
descr = "freebsd4"
} else if (flag("COMPAT6")) {
ncompat6++
out = syscompat6
outdcl = syscompat6dcl
wrap = "compat6"
prefix = "freebsd6_"
descr = "freebsd6"
} else if (flag("COMPAT7")) {
ncompat7++
out = syscompat7
outdcl = syscompat7dcl
wrap = "compat7"
prefix = "freebsd7_"
descr = "freebsd7"
} else if (flag("COMPAT10")) {
ncompat10++
out = syscompat10
outdcl = syscompat10dcl
wrap = "compat10"
prefix = "freebsd10_"
descr = "freebsd10"
}
parseline()
if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
!flag("NODEF")) {
printf("struct %s {\n", argalias) > out
for (i = 1; i <= argc; i++)
printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
"char %s_r_[PADR_(%s)];\n",
argname[i], argtype[i],
argtype[i], argname[i],
argname[i], argtype[i]) > out
printf("};\n") > out
}
else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
printf("struct %s {\n\tregister_t dummy;\n};\n",
argalias) > sysarg
if (!flag("NOPROTO") && !flag("NODEF")) {
printf("%s\t%s%s(struct thread *, struct %s *);\n",
rettype, prefix, funcname, argalias) > outdcl
printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
prefix, funcname, auditev) > sysaue
}
if (flag("NOSTD")) {
printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
"0", "lkmressys", "AUE_NULL") > sysent
align_sysent_comment(8 + 2 + length("0") + 15 + \
length("lkmressys") + length("AUE_NULL") + 3)
} else {
printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
align_sysent_comment(8 + 9 + length(argssize) + 1 + \
length(funcname) + length(auditev) + \
length(flags) + 4)
}
printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
wrap, funcalias, syscall, descr, funcalias) > sysnames
# Do not provide freebsdN_* symbols in libc for < FreeBSD 7
if (flag("COMPAT") || flag("COMPAT4") || flag("COMPAT6")) {
printf("\t\t\t\t/* %d is %s %s */\n",
syscall, descr, funcalias) > syshdr
} else if (!flag("NODEF")) {
printf("#define\t%s%s%s\t%d\n", syscallprefix,
prefix, funcalias, syscall) > syshdr
printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
}
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syscall++
next
}
type("OBSOL") {
printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
align_sysent_comment(34)
printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
$4, syscall, comment) > sysnames
printf("\t\t\t\t/* %d is obsolete %s */\n",
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syscall, comment) > syshdr
syscall++
next
}
type("UNIMPL") {
printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
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syscall, comment) > sysent
printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
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syscall, syscall, comment) > sysnames
syscall++
next
}
{
printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
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exit 1
}
END {
printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0 || ncompat10 != 0)
printf "#include \"opt_compat.h\"\n\n" > syssw
if (ncompat != 0) {
printf "\n#ifdef %s\n", compat > sysinc
printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
printf "#else\n" > sysinc
printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
printf "#endif\n" > sysinc
}
if (ncompat4 != 0) {
printf "\n#ifdef %s\n", compat4 > sysinc
printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
printf "#else\n" > sysinc
printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
printf "#endif\n" > sysinc
}
if (ncompat6 != 0) {
printf "\n#ifdef %s\n", compat6 > sysinc
printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
printf "#else\n" > sysinc
printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
printf "#endif\n" > sysinc
}
if (ncompat7 != 0) {
printf "\n#ifdef %s\n", compat7 > sysinc
printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
printf "#else\n" > sysinc
printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
printf "#endif\n" > sysinc
}
if (ncompat10 != 0) {
printf "\n#ifdef %s\n", compat10 > sysinc
printf "#define compat10(n, name) n, (sy_call_t *)__CONCAT(freebsd10_,name)\n" > sysinc
printf "#else\n" > sysinc
printf "#define compat10(n, name) 0, (sy_call_t *)nosys\n" > sysinc
printf "#endif\n" > sysinc
}
printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
printf("\n#endif /* %s */\n\n", compat10) > syscompat10dcl
printf("\n#undef PAD_\n") > sysprotoend
printf("#undef PADL_\n") > sysprotoend
printf("#undef PADR_\n") > sysprotoend
printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
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printf("\n") > sysmk
Mega-commit for Linux emulator update.. This has been stress tested under netscape-2.0 for Linux running all the Java stuff. The scrollbars are now working, at least on my machine. (whew! :-) I'm uncomfortable with the size of this commit, but it's too inter-dependant to easily seperate out. The main changes: COMPAT_LINUX is *GONE*. Most of the code has been moved out of the i386 machine dependent section into the linux emulator itself. The int 0x80 syscall code was almost identical to the lcall 7,0 code and a minor tweak allows them to both be used with the same C code. All kernels can now just modload the lkm and it'll DTRT without having to rebuild the kernel first. Like IBCS2, you can statically compile it in with "options LINUX". A pile of new syscalls implemented, including getdents(), llseek(), readv(), writev(), msync(), personality(). The Linux-ELF libraries want to use some of these. linux_select() now obeys Linux semantics, ie: returns the time remaining of the timeout value rather than leaving it the original value. Quite a few bugs removed, including incorrect arguments being used in syscalls.. eg: mixups between passing the sigset as an int, vs passing it as a pointer and doing a copyin(), missing return values, unhandled cases, SIOC* ioctls, etc. The build for the code has changed. i386/conf/files now knows how to build linux_genassym and generate linux_assym.h on the fly. Supporting changes elsewhere in the kernel: The user-mode signal trampoline has moved from the U area to immediately below the top of the stack (below PS_STRINGS). This allows the different binary emulations to have their own signal trampoline code (which gets rid of the hardwired syscall 103 (sigreturn on BSD, syslog on Linux)) and so that the emulator can provide the exact "struct sigcontext *" argument to the program's signal handlers. The sigstack's "ss_flags" now uses SS_DISABLE and SS_ONSTACK flags, which have the same values as the re-used SA_DISABLE and SA_ONSTACK which are intended for sigaction only. This enables the support of a SA_RESETHAND flag to sigaction to implement the gross SYSV and Linux SA_ONESHOT signal semantics where the signal handler is reset when it's triggered. makesyscalls.sh no longer appends the struct sysentvec on the end of the generated init_sysent.c code. It's a lot saner to have it in a seperate file rather than trying to update the structure inside the awk script. :-) At exec time, the dozen bytes or so of signal trampoline code are copied to the top of the user's stack, rather than obtaining the trampoline code the old way by getting a clone of the parent's user area. This allows Linux and native binaries to freely exec each other without getting trampolines mixed up.
1996-03-02 19:38:20 +00:00
printf("};\n") > sysent
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printf("};\n") > sysnames
printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
> syshdr
printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
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} '
cat $sysinc $sysent >> $syssw
cat $sysarg $sysdcl \
$syscompat $syscompatdcl \
$syscompat4 $syscompat4dcl \
$syscompat6 $syscompat6dcl \
$syscompat7 $syscompat7dcl \
$syscompat10 $syscompat10dcl \
$sysaue $sysprotoend > $sysproto
cat $systracetmp >> $systrace
cat $systraceret >> $systrace