[compiler-rt] r325206 - Add NetBSD syscall hooks skeleton in sanitizers
Kamil Rytarowski via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 14 18:43:02 PST 2018
Author: kamil
Date: Wed Feb 14 18:43:02 2018
New Revision: 325206
URL: http://llvm.org/viewvc/llvm-project?rev=325206&view=rev
Log:
Add NetBSD syscall hooks skeleton in sanitizers
Summary:
Implement the skeleton of NetBSD syscall hooks for use with sanitizers.
Add a script that generates the rules to handle syscalls
on NetBSD: generate_netbsd_syscalls.awk. It has been written
in NetBSD awk(1) (patched nawk) and is compatible with gawk.
Generate lib/sanitizer_common/sanitizer_platform_limits_netbsd.h
that is a public header for applications, and included as:
<sanitizer_common/sanitizer_platform_limits_netbsd.h>.
Generate sanitizer_syscalls_netbsd.inc that defines all the
syscall rules for NetBSD. This file is modeled after the Linux
specific file: sanitizer_common_syscalls.inc.
Start recognizing NetBSD syscalls with existing sanitizers:
ASan, ESan, HWASan, TSan, MSan.
Sponsored by <The NetBSD Foundation>
Reviewers: joerg, vitalybuka, kcc, dvyukov, eugenis
Reviewed By: vitalybuka
Subscribers: hintonda, kubamracek, mgorny, llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D42048
Added:
compiler-rt/trunk/include/sanitizer/netbsd_syscall_hooks.h
compiler-rt/trunk/lib/sanitizer_common/sanitizer_syscalls_netbsd.inc
compiler-rt/trunk/utils/
compiler-rt/trunk/utils/generate_netbsd_syscalls.awk (with props)
Modified:
compiler-rt/trunk/include/CMakeLists.txt
compiler-rt/trunk/lib/asan/asan_interceptors.cc
compiler-rt/trunk/lib/esan/esan_interceptors.cpp
compiler-rt/trunk/lib/hwasan/hwasan_interceptors.cc
compiler-rt/trunk/lib/msan/msan_interceptors.cc
compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc
Modified: compiler-rt/trunk/include/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/include/CMakeLists.txt?rev=325206&r1=325205&r2=325206&view=diff
==============================================================================
--- compiler-rt/trunk/include/CMakeLists.txt (original)
+++ compiler-rt/trunk/include/CMakeLists.txt Wed Feb 14 18:43:02 2018
@@ -10,6 +10,7 @@ if (COMPILER_RT_BUILD_SANITIZERS)
sanitizer/linux_syscall_hooks.h
sanitizer/lsan_interface.h
sanitizer/msan_interface.h
+ sanitizer/netbsd_syscall_hooks.h
sanitizer/scudo_interface.h
sanitizer/tsan_interface.h
sanitizer/tsan_interface_atomic.h)
Added: compiler-rt/trunk/include/sanitizer/netbsd_syscall_hooks.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/include/sanitizer/netbsd_syscall_hooks.h?rev=325206&view=auto
==============================================================================
--- compiler-rt/trunk/include/sanitizer/netbsd_syscall_hooks.h (added)
+++ compiler-rt/trunk/include/sanitizer/netbsd_syscall_hooks.h Wed Feb 14 18:43:02 2018
@@ -0,0 +1,45 @@
+//===-- netbsd_syscall_hooks.h --------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of public sanitizer interface.
+//
+// System call handlers.
+//
+// Interface methods declared in this header implement pre- and post- syscall
+// actions for the active sanitizer.
+// Usage:
+// __sanitizer_syscall_pre_getfoo(...args...);
+// long long res = syscall(SYS_getfoo, ...args...);
+// __sanitizer_syscall_post_getfoo(res, ...args...);
+//
+// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!
+//
+// Generated with: generate_netbsd_syscalls.awk
+// Generated date: 2018-02-15
+// Generated from: syscalls.master,v 1.291 2018/01/06 16:41:23 kamil Exp
+//
+//===----------------------------------------------------------------------===//
+#ifndef SANITIZER_NETBSD_SYSCALL_HOOKS_H
+#define SANITIZER_NETBSD_SYSCALL_HOOKS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Private declarations. Do not call directly from user code. Use macros above.
+
+// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!
+
+#endif // SANITIZER_NETBSD_SYSCALL_HOOKS_H
Modified: compiler-rt/trunk/lib/asan/asan_interceptors.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/asan/asan_interceptors.cc?rev=325206&r1=325205&r2=325206&view=diff
==============================================================================
--- compiler-rt/trunk/lib/asan/asan_interceptors.cc (original)
+++ compiler-rt/trunk/lib/asan/asan_interceptors.cc Wed Feb 14 18:43:02 2018
@@ -178,6 +178,7 @@ DECLARE_REAL_AND_INTERCEPTOR(void, free,
(void)(s); \
} while (false)
#include "sanitizer_common/sanitizer_common_syscalls.inc"
+#include "sanitizer_common/sanitizer_syscalls_netbsd.inc"
struct ThreadStartParam {
atomic_uintptr_t t;
Modified: compiler-rt/trunk/lib/esan/esan_interceptors.cpp
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/esan/esan_interceptors.cpp?rev=325206&r1=325205&r2=325206&view=diff
==============================================================================
--- compiler-rt/trunk/lib/esan/esan_interceptors.cpp (original)
+++ compiler-rt/trunk/lib/esan/esan_interceptors.cpp Wed Feb 14 18:43:02 2018
@@ -232,6 +232,7 @@ DECLARE_REAL_AND_INTERCEPTOR(void *, mal
} while (false)
#include "sanitizer_common/sanitizer_common_syscalls.inc"
+#include "sanitizer_common/sanitizer_syscalls_netbsd.inc"
//===----------------------------------------------------------------------===//
// Custom interceptors
Modified: compiler-rt/trunk/lib/hwasan/hwasan_interceptors.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/hwasan/hwasan_interceptors.cc?rev=325206&r1=325205&r2=325206&view=diff
==============================================================================
--- compiler-rt/trunk/lib/hwasan/hwasan_interceptors.cc (original)
+++ compiler-rt/trunk/lib/hwasan/hwasan_interceptors.cc Wed Feb 14 18:43:02 2018
@@ -457,6 +457,7 @@ int OnExit() {
(void)(s); \
} while (false)
#include "sanitizer_common/sanitizer_common_syscalls.inc"
+#include "sanitizer_common/sanitizer_syscalls_netbsd.inc"
Modified: compiler-rt/trunk/lib/msan/msan_interceptors.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/msan/msan_interceptors.cc?rev=325206&r1=325205&r2=325206&view=diff
==============================================================================
--- compiler-rt/trunk/lib/msan/msan_interceptors.cc (original)
+++ compiler-rt/trunk/lib/msan/msan_interceptors.cc Wed Feb 14 18:43:02 2018
@@ -1392,6 +1392,7 @@ static uptr signal_impl(int signo, uptr
} while (false)
#define COMMON_SYSCALL_POST_WRITE_RANGE(p, s) __msan_unpoison(p, s)
#include "sanitizer_common/sanitizer_common_syscalls.inc"
+#include "sanitizer_common/sanitizer_syscalls_netbsd.inc"
struct dlinfo {
char *dli_fname;
Modified: compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt?rev=325206&r1=325205&r2=325206&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt (original)
+++ compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt Wed Feb 14 18:43:02 2018
@@ -143,6 +143,7 @@ set(SANITIZER_HEADERS
sanitizer_syscall_generic.inc
sanitizer_syscall_linux_x86_64.inc
sanitizer_syscall_linux_aarch64.inc
+ sanitizer_syscalls_netbsd.inc
sanitizer_thread_registry.h
sanitizer_vector.h
sanitizer_win.h)
Added: compiler-rt/trunk/lib/sanitizer_common/sanitizer_syscalls_netbsd.inc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_syscalls_netbsd.inc?rev=325206&view=auto
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_syscalls_netbsd.inc (added)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_syscalls_netbsd.inc Wed Feb 14 18:43:02 2018
@@ -0,0 +1,107 @@
+//===-- sanitizer_syscalls_netbsd.inc ---------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Common syscalls handlers for tools like AddressSanitizer,
+// ThreadSanitizer, MemorySanitizer, etc.
+//
+// This file should be included into the tool's interceptor file,
+// which has to define it's own macros:
+// COMMON_SYSCALL_PRE_READ_RANGE
+// Called in prehook for regions that will be read by the kernel and
+// must be initialized.
+// COMMON_SYSCALL_PRE_WRITE_RANGE
+// Called in prehook for regions that will be written to by the kernel
+// and must be addressable. The actual write range may be smaller than
+// reported in the prehook. See POST_WRITE_RANGE.
+// COMMON_SYSCALL_POST_READ_RANGE
+// Called in posthook for regions that were read by the kernel. Does
+// not make much sense.
+// COMMON_SYSCALL_POST_WRITE_RANGE
+// Called in posthook for regions that were written to by the kernel
+// and are now initialized.
+// COMMON_SYSCALL_ACQUIRE(addr)
+// Acquire memory visibility from addr.
+// COMMON_SYSCALL_RELEASE(addr)
+// Release memory visibility to addr.
+// COMMON_SYSCALL_FD_CLOSE(fd)
+// Called before closing file descriptor fd.
+// COMMON_SYSCALL_FD_ACQUIRE(fd)
+// Acquire memory visibility from fd.
+// COMMON_SYSCALL_FD_RELEASE(fd)
+// Release memory visibility to fd.
+// COMMON_SYSCALL_PRE_FORK()
+// Called before fork syscall.
+// COMMON_SYSCALL_POST_FORK(long long res)
+// Called after fork syscall.
+//
+// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!
+//
+// Generated with: generate_netbsd_syscalls.awk
+// Generated date: 2018-02-15
+// Generated from: syscalls.master,v 1.291 2018/01/06 16:41:23 kamil Exp
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_platform.h"
+#if SANITIZER_NETBSD
+
+#include "sanitizer_libc.h"
+
+#define PRE_SYSCALL(name) \
+ SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_syscall_pre_impl_##name
+#define PRE_READ(p, s) COMMON_SYSCALL_PRE_READ_RANGE(p, s)
+#define PRE_WRITE(p, s) COMMON_SYSCALL_PRE_WRITE_RANGE(p, s)
+
+#define POST_SYSCALL(name) \
+ SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_syscall_post_impl_##name
+#define POST_READ(p, s) COMMON_SYSCALL_POST_READ_RANGE(p, s)
+#define POST_WRITE(p, s) COMMON_SYSCALL_POST_WRITE_RANGE(p, s)
+
+#ifndef COMMON_SYSCALL_ACQUIRE
+#define COMMON_SYSCALL_ACQUIRE(addr) ((void)(addr))
+#endif
+
+#ifndef COMMON_SYSCALL_RELEASE
+#define COMMON_SYSCALL_RELEASE(addr) ((void)(addr))
+#endif
+
+#ifndef COMMON_SYSCALL_FD_CLOSE
+#define COMMON_SYSCALL_FD_CLOSE(fd) ((void)(fd))
+#endif
+
+#ifndef COMMON_SYSCALL_FD_ACQUIRE
+#define COMMON_SYSCALL_FD_ACQUIRE(fd) ((void)(fd))
+#endif
+
+#ifndef COMMON_SYSCALL_FD_RELEASE
+#define COMMON_SYSCALL_FD_RELEASE(fd) ((void)(fd))
+#endif
+
+#ifndef COMMON_SYSCALL_PRE_FORK
+#define COMMON_SYSCALL_PRE_FORK() \
+ {}
+#endif
+
+#ifndef COMMON_SYSCALL_POST_FORK
+#define COMMON_SYSCALL_POST_FORK(res) \
+ {}
+#endif
+
+// FIXME: do some kind of PRE_READ for all syscall arguments (int(s) and such).
+
+extern "C" {} // extern "C"
+
+#undef PRE_SYSCALL
+#undef PRE_READ
+#undef PRE_WRITE
+#undef POST_SYSCALL
+#undef POST_READ
+#undef POST_WRITE
+
+#endif // SANITIZER_NETBSD
Modified: compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc?rev=325206&r1=325205&r2=325206&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc (original)
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc Wed Feb 14 18:43:02 2018
@@ -2517,6 +2517,7 @@ static void syscall_post_fork(uptr pc, i
syscall_post_fork(GET_CALLER_PC(), res)
#include "sanitizer_common/sanitizer_common_syscalls.inc"
+#include "sanitizer_common/sanitizer_syscalls_netbsd.inc"
#ifdef NEED_TLS_GET_ADDR
// Define own interceptor instead of sanitizer_common's for three reasons:
Added: compiler-rt/trunk/utils/generate_netbsd_syscalls.awk
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/utils/generate_netbsd_syscalls.awk?rev=325206&view=auto
==============================================================================
--- compiler-rt/trunk/utils/generate_netbsd_syscalls.awk (added)
+++ compiler-rt/trunk/utils/generate_netbsd_syscalls.awk Wed Feb 14 18:43:02 2018
@@ -0,0 +1,416 @@
+#!/usr/bin/awk -f
+
+#===-- generate_netbsd_syscalls.awk ----------------------------------------===#
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===------------------------------------------------------------------------===#
+#
+# This file is a generator of:
+# - include/sanitizer/netbsd_syscall_hooks.h
+# - lib/sanitizer_common/sanitizer_syscalls_netbsd.inc
+#
+# This script accepts on the input syscalls.master by default located in the
+# /usr/src/sys/kern/syscalls.master path in the NetBSD distribution.
+#
+# NetBSD version 8.0.
+#
+#===------------------------------------------------------------------------===#
+
+BEGIN {
+ # harcode the script name
+ script_name = "generate_netbsd_syscalls.awk"
+ outputh = "../include/sanitizer/netbsd_syscall_hooks.h"
+ outputinc = "../lib/sanitizer_common/sanitizer_syscalls_netbsd.inc"
+
+ # assert that we are in the directory with scripts
+ in_utils = system("test -f " script_name " && exit 1 || exit 0")
+ if (in_utils == 0) {
+ usage()
+ }
+
+ # assert 1 argument passed
+ if (ARGC != 2) {
+ usage()
+ }
+
+ # assert argument is a valid file path to syscall.master
+ if (system("test -f " ARGV[1]) != 0) {
+ usage()
+ }
+
+ # sanity check that the path ends with "syscall.master"
+ if (ARGV[1] !~ /syscalls\.master$/) {
+ usage()
+ }
+
+ # accept overloading CLANGFORMAT from environment
+ clangformat = "clang-format"
+ if ("CLANGFORMAT" in ENVIRON) {
+ clangformat = ENVIRON["CLANGFORMAT"]
+ }
+
+ # parsing specific symbols
+ parsingheader=1
+
+ parsedsyscalls=0
+
+ # Hardcoded in algorithm
+ SYS_MAXSYSARGS=8
+}
+
+# Parse the RCS ID from syscall.master
+parsingheader == 1 && NR == 1 {
+ if (match($0, /\$[^$]+\$/)) {
+ # trim initial 'NetBSD: ' and trailing ' $'
+ syscallmasterversion = substr($0, RSTART + 9, RLENGTH - 11)
+ } else {
+ # wrong file?
+ usage()
+ }
+}
+
+# skip the following lines
+# - empty
+NF == 0 {
+ next
+}
+# - comment
+$1 == ";" {
+ next
+}
+
+# separator between the header and table with syscalls
+$0 == "%%" {
+ parsingheader = 0
+ next
+}
+
+# preserve 'if/elif/else/endif' C preprocessor as-is
+parsingheader == 0 && $0 ~ /^#/ {
+ if (parsedsyscalls in ifelifelseendif) {
+ ifelifelseendif[parsedsyscalls] = ifelifelseendif[parsedsyscalls] "\n" $0
+ } else {
+ ifelifelseendif[parsedsyscalls] = $0
+ }
+ next
+}
+
+# parsing of syscall definitions
+parsingheader == 0 && $1 ~ /^[0-9]+$/ {
+ # first join multiple lines into single one
+ while (sub(/\\$/, "")) {
+ getline line
+ $0 = $0 "" line
+ }
+
+ # Skip unwanted syscalls
+ skip=0
+ if ($0 ~ /OBSOL/ || $0 ~ /EXCL/ || $0 ~ /UNIMPL/) {
+ skip=1
+ }
+
+ # Compose the syscall name
+ # - compat?
+ compat=""
+ if (match($0, /COMPAT_[0-9]+/)) {
+ compat = tolower(substr($0, RSTART, RLENGTH))
+ }
+ # - alias name?
+ alias=""
+ if ($(NF) != "}" && !skip) {
+ alias = alias "" $(NF)
+ }
+ # - compat version?
+ compatver=""
+ if (match($0, /\|[0-9]+\|/)) {
+ compatver = tolower(substr($0, RSTART + 1, RLENGTH - 2))
+ }
+ # - basename?
+ basename=""
+ if (skip) {
+ basename = $1
+ } else {
+ if (match($0, /\|[_a-z0-9]+\(/)) {
+ basename = tolower(substr($0, RSTART + 1, RLENGTH - 2))
+ }
+ }
+
+ syscallname=""
+
+ if (skip) {
+ syscallname= syscallname "$"
+ }
+
+ if (length(compat) > 0) {
+ syscallname = syscallname "" compat "_"
+ }
+ if (length(alias) > 0) {
+ syscallname = syscallname "" alias
+ } else {
+ if (length(compatver) > 0) {
+ syscallname = syscallname "__" basename "" compatver
+ } else {
+ syscallname = syscallname "" basename
+ }
+ }
+
+ # Store the syscallname
+ syscalls[parsedsyscalls]=syscallname
+
+ # Extract syscall arguments
+ if (match($0, /\([^)]+\)/)) {
+ args = substr($0, RSTART + 1, RLENGTH - 2)
+
+ if (args == "void") {
+ syscallargs[parsedsyscalls] = "void"
+ syscallfullargs[parsedsyscalls] = "void"
+ } else {
+ # Normalize 'type * argument' to 'type *argument'
+ gsub("\\*[ \t]+", "*", args)
+
+ n = split(args, a, ",")
+
+ # Handle the first argument
+ match(a[1], /[*_a-z0-9\[\]]+$/)
+ syscallfullargs[parsedsyscalls] = substr(a[1], RSTART) "_"
+
+ gsub(".+[ *]", "", a[1])
+ syscallargs[parsedsyscalls] = a[1]
+
+ # Handle the rest of arguments
+ for (i = 2; i <= n; i++) {
+ match(a[i], /[*_a-zA-Z0-9\[\]]+$/)
+ fs = substr(a[i], RSTART)
+ if (fs ~ /\[/) {
+ sub(/\[/, "_[", fs)
+ } else {
+ fs = fs "_"
+ }
+ syscallfullargs[parsedsyscalls] = syscallfullargs[parsedsyscalls] "$" fs
+ gsub(".+[ *]", "", a[i])
+ syscallargs[parsedsyscalls] = syscallargs[parsedsyscalls] "$" a[i]
+ }
+
+ # Handle array arguments for syscall(2) and __syscall(2)
+ nargs = "arg0$arg1$arg2$arg3$arg4$arg5$arg6$arg7"
+ gsub(/args\[SYS_MAXSYSARGS\]/, nargs, syscallargs[parsedsyscalls])
+ }
+ }
+
+ parsedsyscalls++
+
+ # Done with this line
+ next
+}
+
+
+END {
+ # empty file?
+ if (NR < 1 && !abnormal_exit) {
+ usage()
+ }
+
+ # Handle abnormal exit
+ if (abnormal_exit) {
+ exit(abnormal_exit)
+ }
+
+ # Generate sanitizer_syscalls_netbsd.inc
+
+ # open pipe
+ cmd = clangformat " > " outputh
+
+ pcmd("//===-- netbsd_syscall_hooks.h --------------------------------------------===//")
+ pcmd("//")
+ pcmd("// The LLVM Compiler Infrastructure")
+ pcmd("//")
+ pcmd("// This file is distributed under the University of Illinois Open Source")
+ pcmd("// License. See LICENSE.TXT for details.")
+ pcmd("//")
+ pcmd("//===----------------------------------------------------------------------===//")
+ pcmd("//")
+ pcmd("// This file is a part of public sanitizer interface.")
+ pcmd("//")
+ pcmd("// System call handlers.")
+ pcmd("//")
+ pcmd("// Interface methods declared in this header implement pre- and post- syscall")
+ pcmd("// actions for the active sanitizer.")
+ pcmd("// Usage:")
+ pcmd("// __sanitizer_syscall_pre_getfoo(...args...);")
+ pcmd("// long long res = syscall(SYS_getfoo, ...args...);")
+ pcmd("// __sanitizer_syscall_post_getfoo(res, ...args...);")
+ pcmd("//")
+ pcmd("// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!")
+ pcmd("//")
+ pcmd("// Generated with: " script_name)
+ pcmd("// Generated date: " strftime("%F"))
+ pcmd("// Generated from: " syscallmasterversion)
+ pcmd("//")
+ pcmd("//===----------------------------------------------------------------------===//")
+ pcmd("#ifndef SANITIZER_NETBSD_SYSCALL_HOOKS_H")
+ pcmd("#define SANITIZER_NETBSD_SYSCALL_HOOKS_H")
+ pcmd("")
+
+ # TODO
+
+ pcmd("")
+ pcmd("#ifdef __cplusplus")
+ pcmd("extern \"C\" {")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("// Private declarations. Do not call directly from user code. Use macros above.")
+ pcmd("")
+ pcmd("// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!")
+ pcmd("")
+
+ # TODO
+
+ pcmd("")
+ pcmd("#ifdef __cplusplus")
+ pcmd("} // extern \"C\"")
+ pcmd("#endif")
+
+ pcmd("")
+ pcmd("// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!")
+ pcmd("")
+
+ pcmd("#endif // SANITIZER_NETBSD_SYSCALL_HOOKS_H")
+
+ close(cmd)
+
+ # Generate sanitizer_syscalls_netbsd.inc
+
+ # open pipe
+ cmd = clangformat " > " outputinc
+
+ pcmd("//===-- sanitizer_syscalls_netbsd.inc ---------------------------*- C++ -*-===//")
+ pcmd("//")
+ pcmd("// The LLVM Compiler Infrastructure")
+ pcmd("//")
+ pcmd("// This file is distributed under the University of Illinois Open Source")
+ pcmd("// License. See LICENSE.TXT for details.")
+ pcmd("//")
+ pcmd("//===----------------------------------------------------------------------===//")
+ pcmd("//")
+ pcmd("// Common syscalls handlers for tools like AddressSanitizer,")
+ pcmd("// ThreadSanitizer, MemorySanitizer, etc.")
+ pcmd("//")
+ pcmd("// This file should be included into the tool's interceptor file,")
+ pcmd("// which has to define it's own macros:")
+ pcmd("// COMMON_SYSCALL_PRE_READ_RANGE")
+ pcmd("// Called in prehook for regions that will be read by the kernel and")
+ pcmd("// must be initialized.")
+ pcmd("// COMMON_SYSCALL_PRE_WRITE_RANGE")
+ pcmd("// Called in prehook for regions that will be written to by the kernel")
+ pcmd("// and must be addressable. The actual write range may be smaller than")
+ pcmd("// reported in the prehook. See POST_WRITE_RANGE.")
+ pcmd("// COMMON_SYSCALL_POST_READ_RANGE")
+ pcmd("// Called in posthook for regions that were read by the kernel. Does")
+ pcmd("// not make much sense.")
+ pcmd("// COMMON_SYSCALL_POST_WRITE_RANGE")
+ pcmd("// Called in posthook for regions that were written to by the kernel")
+ pcmd("// and are now initialized.")
+ pcmd("// COMMON_SYSCALL_ACQUIRE(addr)")
+ pcmd("// Acquire memory visibility from addr.")
+ pcmd("// COMMON_SYSCALL_RELEASE(addr)")
+ pcmd("// Release memory visibility to addr.")
+ pcmd("// COMMON_SYSCALL_FD_CLOSE(fd)")
+ pcmd("// Called before closing file descriptor fd.")
+ pcmd("// COMMON_SYSCALL_FD_ACQUIRE(fd)")
+ pcmd("// Acquire memory visibility from fd.")
+ pcmd("// COMMON_SYSCALL_FD_RELEASE(fd)")
+ pcmd("// Release memory visibility to fd.")
+ pcmd("// COMMON_SYSCALL_PRE_FORK()")
+ pcmd("// Called before fork syscall.")
+ pcmd("// COMMON_SYSCALL_POST_FORK(long long res)")
+ pcmd("// Called after fork syscall.")
+ pcmd("//")
+ pcmd("// DO NOT EDIT! THIS FILE HAS BEEN GENERATED!")
+ pcmd("//")
+ pcmd("// Generated with: " script_name)
+ pcmd("// Generated date: " strftime("%F"))
+ pcmd("// Generated from: " syscallmasterversion)
+ pcmd("//")
+ pcmd("//===----------------------------------------------------------------------===//")
+ pcmd("")
+ pcmd("#include \"sanitizer_platform.h\"")
+ pcmd("#if SANITIZER_NETBSD")
+ pcmd("")
+ pcmd("#include \"sanitizer_libc.h\"")
+ pcmd("")
+ pcmd("#define PRE_SYSCALL(name) \\")
+ pcmd(" SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_syscall_pre_impl_##name")
+ pcmd("#define PRE_READ(p, s) COMMON_SYSCALL_PRE_READ_RANGE(p, s)")
+ pcmd("#define PRE_WRITE(p, s) COMMON_SYSCALL_PRE_WRITE_RANGE(p, s)")
+ pcmd("")
+ pcmd("#define POST_SYSCALL(name) \\")
+ pcmd(" SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_syscall_post_impl_##name")
+ pcmd("#define POST_READ(p, s) COMMON_SYSCALL_POST_READ_RANGE(p, s)")
+ pcmd("#define POST_WRITE(p, s) COMMON_SYSCALL_POST_WRITE_RANGE(p, s)")
+ pcmd("")
+ pcmd("#ifndef COMMON_SYSCALL_ACQUIRE")
+ pcmd("# define COMMON_SYSCALL_ACQUIRE(addr) ((void)(addr))")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("#ifndef COMMON_SYSCALL_RELEASE")
+ pcmd("# define COMMON_SYSCALL_RELEASE(addr) ((void)(addr))")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("#ifndef COMMON_SYSCALL_FD_CLOSE")
+ pcmd("# define COMMON_SYSCALL_FD_CLOSE(fd) ((void)(fd))")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("#ifndef COMMON_SYSCALL_FD_ACQUIRE")
+ pcmd("# define COMMON_SYSCALL_FD_ACQUIRE(fd) ((void)(fd))")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("#ifndef COMMON_SYSCALL_FD_RELEASE")
+ pcmd("# define COMMON_SYSCALL_FD_RELEASE(fd) ((void)(fd))")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("#ifndef COMMON_SYSCALL_PRE_FORK")
+ pcmd("# define COMMON_SYSCALL_PRE_FORK() {}")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("#ifndef COMMON_SYSCALL_POST_FORK")
+ pcmd("# define COMMON_SYSCALL_POST_FORK(res) {}")
+ pcmd("#endif")
+ pcmd("")
+ pcmd("// FIXME: do some kind of PRE_READ for all syscall arguments (int(s) and such).")
+ pcmd("")
+ pcmd("extern \"C\" {")
+
+ # TODO
+
+ pcmd("} // extern \"C\"")
+ pcmd("")
+ pcmd("#undef PRE_SYSCALL")
+ pcmd("#undef PRE_READ")
+ pcmd("#undef PRE_WRITE")
+ pcmd("#undef POST_SYSCALL")
+ pcmd("#undef POST_READ")
+ pcmd("#undef POST_WRITE")
+ pcmd("")
+ pcmd("#endif // SANITIZER_NETBSD")
+
+ close(cmd)
+
+ # Hack for preprocessed code
+ system("sed -i 's,^ \\([^ ]\\), \\1,' " outputinc)
+}
+
+function usage()
+{
+ print "Usage: " script_name " syscalls.master"
+ abnormal_exit = 1
+ exit 1
+}
+
+function pcmd(string)
+{
+ print string | cmd
+}
Propchange: compiler-rt/trunk/utils/generate_netbsd_syscalls.awk
------------------------------------------------------------------------------
svn:executable = *
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