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authorthestig@chromium.org <thestig@chromium.org@4c0a9323-5329-0410-9bdc-e9ce6186880e>2010-09-15 22:31:57 +0000
committerthestig@chromium.org <thestig@chromium.org@4c0a9323-5329-0410-9bdc-e9ce6186880e>2010-09-15 22:31:57 +0000
commit0e3b7020b8f679259acfcfdbea4d39e1c13e6f19 (patch)
tree8b2737cd0fdbb541a8f38f7175894a7dd1d7b436 /src/common/linux
parentRevert revision 658 ('Add glog style logging to symupload'). (diff)
downloadbreakpad-0e3b7020b8f679259acfcfdbea4d39e1c13e6f19.tar.xz
Import linux_syscall_support.h from linux-syscall-support.googlecode.com instead of using our own copy.
Review URL: http://breakpad.appspot.com/192001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@686 4c0a9323-5329-0410-9bdc-e9ce6186880e
Diffstat (limited to 'src/common/linux')
-rw-r--r--src/common/linux/file_id.cc2
-rw-r--r--src/common/linux/linux_syscall_support.h2949
-rw-r--r--src/common/linux/memory.h2
3 files changed, 2 insertions, 2951 deletions
diff --git a/src/common/linux/file_id.cc b/src/common/linux/file_id.cc
index a4e3a6e3..b04c831e 100644
--- a/src/common/linux/file_id.cc
+++ b/src/common/linux/file_id.cc
@@ -48,7 +48,7 @@
#include <algorithm>
#include "common/linux/linux_libc_support.h"
-#include "common/linux/linux_syscall_support.h"
+#include "third_party/lss/linux_syscall_support.h"
namespace google_breakpad {
diff --git a/src/common/linux/linux_syscall_support.h b/src/common/linux/linux_syscall_support.h
deleted file mode 100644
index 0b6e3183..00000000
--- a/src/common/linux/linux_syscall_support.h
+++ /dev/null
@@ -1,2949 +0,0 @@
-/* Copyright (c) 2005-2008, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * ---
- * Author: Markus Gutschke
- */
-
-/* This file includes Linux-specific support functions common to the
- * coredumper and the thread lister; primarily, this is a collection
- * of direct system calls, and a couple of symbols missing from
- * standard header files.
- * There are a few options that the including file can set to control
- * the behavior of this file:
- *
- * SYS_CPLUSPLUS:
- * The entire header file will normally be wrapped in 'extern "C" { }",
- * making it suitable for compilation as both C and C++ source. If you
- * do not want to do this, you can set the SYS_CPLUSPLUS macro to inhibit
- * the wrapping. N.B. doing so will suppress inclusion of all prerequisite
- * system header files, too. It is the caller's responsibility to provide
- * the necessary definitions.
- *
- * SYS_ERRNO:
- * All system calls will update "errno" unless overriden by setting the
- * SYS_ERRNO macro prior to including this file. SYS_ERRNO should be
- * an l-value.
- *
- * SYS_INLINE:
- * New symbols will be defined "static inline", unless overridden by
- * the SYS_INLINE macro.
- *
- * SYS_LINUX_SYSCALL_SUPPORT_H
- * This macro is used to avoid multiple inclusions of this header file.
- * If you need to include this file more than once, make sure to
- * unset SYS_LINUX_SYSCALL_SUPPORT_H before each inclusion.
- *
- * SYS_PREFIX:
- * New system calls will have a prefix of "sys_" unless overridden by
- * the SYS_PREFIX macro. Valid values for this macro are [0..9] which
- * results in prefixes "sys[0..9]_". It is also possible to set this
- * macro to -1, which avoids all prefixes.
- *
- * This file defines a few internal symbols that all start with "LSS_".
- * Do not access these symbols from outside this file. They are not part
- * of the supported API.
- */
-#ifndef SYS_LINUX_SYSCALL_SUPPORT_H
-#define SYS_LINUX_SYSCALL_SUPPORT_H
-
-/* We currently only support x86-32, x86-64, ARM, MIPS, and PPC on Linux.
- * Porting to other related platforms should not be difficult.
- */
-#if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) || \
- defined(__mips__) || defined(__PPC__) || defined(__ARM_EABI__)) \
- && defined(__linux)
-
-#ifndef SYS_CPLUSPLUS
-#ifdef __cplusplus
-/* Some system header files in older versions of gcc neglect to properly
- * handle being included from C++. As it appears to be harmless to have
- * multiple nested 'extern "C"' blocks, just add another one here.
- */
-extern "C" {
-#endif
-
-#include <errno.h>
-#include <signal.h>
-#include <stdarg.h>
-#include <string.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <syscall.h>
-#include <unistd.h>
-#include <linux/unistd.h>
-#include <endian.h>
-
-#ifdef __mips__
-/* Include definitions of the ABI currently in use. */
-#include <sgidefs.h>
-#endif
-#endif
-
-/* As glibc often provides subtly incompatible data structures (and implicit
- * wrapper functions that convert them), we provide our own kernel data
- * structures for use by the system calls.
- * These structures have been developed by using Linux 2.6.23 headers for
- * reference. Note though, we do not care about exact API compatibility
- * with the kernel, and in fact the kernel often does not have a single
- * API that works across architectures. Instead, we try to mimic the glibc
- * API where reasonable, and only guarantee ABI compatibility with the
- * kernel headers.
- * Most notably, here are a few changes that were made to the structures
- * defined by kernel headers:
- *
- * - we only define structures, but not symbolic names for kernel data
- * types. For the latter, we directly use the native C datatype
- * (i.e. "unsigned" instead of "mode_t").
- * - in a few cases, it is possible to define identical structures for
- * both 32bit (e.g. i386) and 64bit (e.g. x86-64) platforms by
- * standardizing on the 64bit version of the data types. In particular,
- * this means that we use "unsigned" where the 32bit headers say
- * "unsigned long".
- * - overall, we try to minimize the number of cases where we need to
- * conditionally define different structures.
- * - the "struct kernel_sigaction" class of structures have been
- * modified to more closely mimic glibc's API by introducing an
- * anonymous union for the function pointer.
- * - a small number of field names had to have an underscore appended to
- * them, because glibc defines a global macro by the same name.
- */
-
-/* include/linux/dirent.h */
-struct kernel_dirent64 {
- unsigned long long d_ino;
- long long d_off;
- unsigned short d_reclen;
- unsigned char d_type;
- char d_name[256];
-};
-
-/* include/linux/dirent.h */
-struct kernel_dirent {
- long d_ino;
- long d_off;
- unsigned short d_reclen;
- char d_name[256];
-};
-
-/* include/linux/uio.h */
-struct kernel_iovec {
- void *iov_base;
- unsigned long iov_len;
-};
-
-/* include/linux/socket.h */
-struct kernel_msghdr {
- void *msg_name;
- int msg_namelen;
- struct kernel_iovec*msg_iov;
- unsigned long msg_iovlen;
- void *msg_control;
- unsigned long msg_controllen;
- unsigned msg_flags;
-};
-
-/* include/asm-generic/poll.h */
-struct kernel_pollfd {
- int fd;
- short events;
- short revents;
-};
-
-/* include/linux/resource.h */
-struct kernel_rlimit {
- unsigned long rlim_cur;
- unsigned long rlim_max;
-};
-
-/* include/linux/time.h */
-struct kernel_timespec {
- long tv_sec;
- long tv_nsec;
-};
-
-/* include/linux/time.h */
-struct kernel_timeval {
- long tv_sec;
- long tv_usec;
-};
-
-/* include/linux/resource.h */
-struct kernel_rusage {
- struct kernel_timeval ru_utime;
- struct kernel_timeval ru_stime;
- long ru_maxrss;
- long ru_ixrss;
- long ru_idrss;
- long ru_isrss;
- long ru_minflt;
- long ru_majflt;
- long ru_nswap;
- long ru_inblock;
- long ru_oublock;
- long ru_msgsnd;
- long ru_msgrcv;
- long ru_nsignals;
- long ru_nvcsw;
- long ru_nivcsw;
-};
-
-struct siginfo;
-#if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \
- || defined(__PPC__)
-
-/* include/asm-{arm,i386,mips,ppc}/signal.h */
-struct kernel_old_sigaction {
- union {
- void (*sa_handler_)(int);
- void (*sa_sigaction_)(int, struct siginfo *, void *);
- };
- unsigned long sa_mask;
- unsigned long sa_flags;
- void (*sa_restorer)(void);
-} __attribute__((packed,aligned(4)));
-#elif (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
- #define kernel_old_sigaction kernel_sigaction
-#endif
-
-/* Some kernel functions (e.g. sigaction() in 2.6.23) require that the
- * exactly match the size of the signal set, even though the API was
- * intended to be extensible. We define our own KERNEL_NSIG to deal with
- * this.
- * Please note that glibc provides signals [1.._NSIG-1], whereas the
- * kernel (and this header) provides the range [1..KERNEL_NSIG]. The
- * actual number of signals is obviously the same, but the constants
- * differ by one.
- */
-#ifdef __mips__
-#define KERNEL_NSIG 128
-#else
-#define KERNEL_NSIG 64
-#endif
-
-/* include/asm-{arm,i386,mips,x86_64}/signal.h */
-struct kernel_sigset_t {
- unsigned long sig[(KERNEL_NSIG + 8*sizeof(unsigned long) - 1)/
- (8*sizeof(unsigned long))];
-};
-
-/* include/asm-{arm,i386,mips,x86_64,ppc}/signal.h */
-struct kernel_sigaction {
-#ifdef __mips__
- unsigned long sa_flags;
- union {
- void (*sa_handler_)(int);
- void (*sa_sigaction_)(int, struct siginfo *, void *);
- };
- struct kernel_sigset_t sa_mask;
-#else
- union {
- void (*sa_handler_)(int);
- void (*sa_sigaction_)(int, struct siginfo *, void *);
- };
- unsigned long sa_flags;
- void (*sa_restorer)(void);
- struct kernel_sigset_t sa_mask;
-#endif
-};
-
-/* include/linux/socket.h */
-struct kernel_sockaddr {
- unsigned short sa_family;
- char sa_data[14];
-};
-
-/* include/asm-{arm,i386,mips,ppc}/stat.h */
-#ifdef __mips__
-#if _MIPS_SIM == _MIPS_SIM_ABI64
-struct kernel_stat {
-#else
-struct kernel_stat64 {
-#endif
- unsigned st_dev;
- unsigned __pad0[3];
- unsigned long long st_ino;
- unsigned st_mode;
- unsigned st_nlink;
- unsigned st_uid;
- unsigned st_gid;
- unsigned st_rdev;
- unsigned __pad1[3];
- long long st_size;
- unsigned st_atime_;
- unsigned st_atime_nsec_;
- unsigned st_mtime_;
- unsigned st_mtime_nsec_;
- unsigned st_ctime_;
- unsigned st_ctime_nsec_;
- unsigned st_blksize;
- unsigned __pad2;
- unsigned long long st_blocks;
-};
-#elif defined __PPC__
-struct kernel_stat64 {
- unsigned long long st_dev;
- unsigned long long st_ino;
- unsigned st_mode;
- unsigned st_nlink;
- unsigned st_uid;
- unsigned st_gid;
- unsigned long long st_rdev;
- unsigned short int __pad2;
- long long st_size;
- long st_blksize;
- long long st_blocks;
- long st_atime_;
- unsigned long st_atime_nsec_;
- long st_mtime_;
- unsigned long st_mtime_nsec_;
- long st_ctime_;
- unsigned long st_ctime_nsec_;
- unsigned long __unused4;
- unsigned long __unused5;
-};
-#else
-struct kernel_stat64 {
- unsigned long long st_dev;
- unsigned char __pad0[4];
- unsigned __st_ino;
- unsigned st_mode;
- unsigned st_nlink;
- unsigned st_uid;
- unsigned st_gid;
- unsigned long long st_rdev;
- unsigned char __pad3[4];
- long long st_size;
- unsigned st_blksize;
- unsigned long long st_blocks;
- unsigned st_atime_;
- unsigned st_atime_nsec_;
- unsigned st_mtime_;
- unsigned st_mtime_nsec_;
- unsigned st_ctime_;
- unsigned st_ctime_nsec_;
- unsigned long long st_ino;
-};
-#endif
-
-/* include/asm-{arm,i386,mips,x86_64,ppc}/stat.h */
-#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
-struct kernel_stat {
- /* The kernel headers suggest that st_dev and st_rdev should be 32bit
- * quantities encoding 12bit major and 20bit minor numbers in an interleaved
- * format. In reality, we do not see useful data in the top bits. So,
- * we'll leave the padding in here, until we find a better solution.
- */
- unsigned short st_dev;
- short pad1;
- unsigned st_ino;
- unsigned short st_mode;
- unsigned short st_nlink;
- unsigned short st_uid;
- unsigned short st_gid;
- unsigned short st_rdev;
- short pad2;
- unsigned st_size;
- unsigned st_blksize;
- unsigned st_blocks;
- unsigned st_atime_;
- unsigned st_atime_nsec_;
- unsigned st_mtime_;
- unsigned st_mtime_nsec_;
- unsigned st_ctime_;
- unsigned st_ctime_nsec_;
- unsigned __unused4;
- unsigned __unused5;
-};
-#elif defined(__x86_64__)
-struct kernel_stat {
- unsigned long st_dev;
- unsigned long st_ino;
- unsigned long st_nlink;
- unsigned st_mode;
- unsigned st_uid;
- unsigned st_gid;
- unsigned __pad0;
- unsigned long st_rdev;
- long st_size;
- long st_blksize;
- long st_blocks;
- unsigned long st_atime_;
- unsigned long st_atime_nsec_;
- unsigned long st_mtime_;
- unsigned long st_mtime_nsec_;
- unsigned long st_ctime_;
- unsigned long st_ctime_nsec_;
- long __unused[3];
-};
-#elif defined(__PPC__)
-struct kernel_stat {
- unsigned st_dev;
- unsigned long st_ino; // ino_t
- unsigned long st_mode; // mode_t
- unsigned short st_nlink; // nlink_t
- unsigned st_uid; // uid_t
- unsigned st_gid; // gid_t
- unsigned st_rdev;
- long st_size; // off_t
- unsigned long st_blksize;
- unsigned long st_blocks;
- unsigned long st_atime_;
- unsigned long st_atime_nsec_;
- unsigned long st_mtime_;
- unsigned long st_mtime_nsec_;
- unsigned long st_ctime_;
- unsigned long st_ctime_nsec_;
- unsigned long __unused4;
- unsigned long __unused5;
-};
-#elif (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64)
-struct kernel_stat {
- unsigned st_dev;
- int st_pad1[3];
- unsigned st_ino;
- unsigned st_mode;
- unsigned st_nlink;
- unsigned st_uid;
- unsigned st_gid;
- unsigned st_rdev;
- int st_pad2[2];
- long st_size;
- int st_pad3;
- long st_atime_;
- long st_atime_nsec_;
- long st_mtime_;
- long st_mtime_nsec_;
- long st_ctime_;
- long st_ctime_nsec_;
- int st_blksize;
- int st_blocks;
- int st_pad4[14];
-};
-#endif
-
-/* include/asm-{arm,i386,mips,x86_64,ppc}/statfs.h */
-#ifdef __mips__
-#if _MIPS_SIM != _MIPS_SIM_ABI64
-struct kernel_statfs64 {
- unsigned long f_type;
- unsigned long f_bsize;
- unsigned long f_frsize;
- unsigned long __pad;
- unsigned long long f_blocks;
- unsigned long long f_bfree;
- unsigned long long f_files;
- unsigned long long f_ffree;
- unsigned long long f_bavail;
- struct { int val[2]; } f_fsid;
- unsigned long f_namelen;
- unsigned long f_spare[6];
-};
-#endif
-#elif !defined(__x86_64__)
-struct kernel_statfs64 {
- unsigned long f_type;
- unsigned long f_bsize;
- unsigned long long f_blocks;
- unsigned long long f_bfree;
- unsigned long long f_bavail;
- unsigned long long f_files;
- unsigned long long f_ffree;
- struct { int val[2]; } f_fsid;
- unsigned long f_namelen;
- unsigned long f_frsize;
- unsigned long f_spare[5];
-};
-#endif
-
-/* include/asm-{arm,i386,mips,x86_64,ppc,generic}/statfs.h */
-#ifdef __mips__
-struct kernel_statfs {
- long f_type;
- long f_bsize;
- long f_frsize;
- long f_blocks;
- long f_bfree;
- long f_files;
- long f_ffree;
- long f_bavail;
- struct { int val[2]; } f_fsid;
- long f_namelen;
- long f_spare[6];
-};
-#else
-struct kernel_statfs {
- /* x86_64 actually defines all these fields as signed, whereas all other */
- /* platforms define them as unsigned. Leaving them at unsigned should not */
- /* cause any problems. */
- unsigned long f_type;
- unsigned long f_bsize;
- unsigned long f_blocks;
- unsigned long f_bfree;
- unsigned long f_bavail;
- unsigned long f_files;
- unsigned long f_ffree;
- struct { int val[2]; } f_fsid;
- unsigned long f_namelen;
- unsigned long f_frsize;
- unsigned long f_spare[5];
-};
-#endif
-
-
-/* Definitions missing from the standard header files */
-#ifndef O_DIRECTORY
-#if defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
-#define O_DIRECTORY 0040000
-#else
-#define O_DIRECTORY 0200000
-#endif
-#endif
-#ifndef NT_PRXFPREG
-#define NT_PRXFPREG 0x46e62b7f
-#endif
-#ifndef PTRACE_GETFPXREGS
-#define PTRACE_GETFPXREGS ((enum __ptrace_request)18)
-#endif
-#ifndef PR_GET_DUMPABLE
-#define PR_GET_DUMPABLE 3
-#endif
-#ifndef PR_SET_DUMPABLE
-#define PR_SET_DUMPABLE 4
-#endif
-#ifndef AT_FDCWD
-#define AT_FDCWD (-100)
-#endif
-#ifndef AT_SYMLINK_NOFOLLOW
-#define AT_SYMLINK_NOFOLLOW 0x100
-#endif
-#ifndef AT_REMOVEDIR
-#define AT_REMOVEDIR 0x200
-#endif
-#ifndef MREMAP_FIXED
-#define MREMAP_FIXED 2
-#endif
-#ifndef SA_RESTORER
-#define SA_RESTORER 0x04000000
-#endif
-
-#if defined(__i386__)
-#ifndef __NR_setresuid
-#define __NR_setresuid 164
-#define __NR_setresgid 170
-#endif
-#ifndef __NR_rt_sigaction
-#define __NR_rt_sigaction 174
-#define __NR_rt_sigprocmask 175
-#define __NR_rt_sigpending 176
-#define __NR_rt_sigsuspend 179
-#endif
-#ifndef __NR_pread64
-#define __NR_pread64 180
-#endif
-#ifndef __NR_pwrite64
-#define __NR_pwrite64 181
-#endif
-#ifndef __NR_ugetrlimit
-#define __NR_ugetrlimit 191
-#endif
-#ifndef __NR_stat64
-#define __NR_stat64 195
-#endif
-#ifndef __NR_fstat64
-#define __NR_fstat64 197
-#endif
-#ifndef __NR_setresuid32
-#define __NR_setresuid32 208
-#define __NR_setresgid32 210
-#endif
-#ifndef __NR_setfsuid32
-#define __NR_setfsuid32 215
-#define __NR_setfsgid32 216
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 220
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid 224
-#endif
-#ifndef __NR_readahead
-#define __NR_readahead 225
-#endif
-#ifndef __NR_setxattr
-#define __NR_setxattr 226
-#endif
-#ifndef __NR_lsetxattr
-#define __NR_lsetxattr 227
-#endif
-#ifndef __NR_getxattr
-#define __NR_getxattr 229
-#endif
-#ifndef __NR_lgetxattr
-#define __NR_lgetxattr 230
-#endif
-#ifndef __NR_futex
-#define __NR_futex 240
-#endif
-#ifndef __NR_sched_setaffinity
-#define __NR_sched_setaffinity 241
-#define __NR_sched_getaffinity 242
-#endif
-#ifndef __NR_set_tid_address
-#define __NR_set_tid_address 258
-#endif
-#ifndef __NR_statfs64
-#define __NR_statfs64 268
-#endif
-#ifndef __NR_fstatfs64
-#define __NR_fstatfs64 269
-#endif
-#ifndef __NR_fadvise64_64
-#define __NR_fadvise64_64 272
-#endif
-#ifndef __NR_openat
-#define __NR_openat 295
-#endif
-#ifndef __NR_fstatat64
-#define __NR_fstatat64 300
-#endif
-#ifndef __NR_unlinkat
-#define __NR_unlinkat 301
-#endif
-#ifndef __NR_move_pages
-#define __NR_move_pages 317
-#endif
-/* End of i386 definitions */
-#elif defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
-#ifndef __NR_setresuid
-#define __NR_setresuid (__NR_SYSCALL_BASE + 164)
-#define __NR_setresgid (__NR_SYSCALL_BASE + 170)
-#endif
-#ifndef __NR_rt_sigaction
-#define __NR_rt_sigaction (__NR_SYSCALL_BASE + 174)
-#define __NR_rt_sigprocmask (__NR_SYSCALL_BASE + 175)
-#define __NR_rt_sigpending (__NR_SYSCALL_BASE + 176)
-#define __NR_rt_sigsuspend (__NR_SYSCALL_BASE + 179)
-#endif
-#ifndef __NR_pread64
-#define __NR_pread64 (__NR_SYSCALL_BASE + 180)
-#endif
-#ifndef __NR_pwrite64
-#define __NR_pwrite64 (__NR_SYSCALL_BASE + 181)
-#endif
-#ifndef __NR_ugetrlimit
-#define __NR_ugetrlimit (__NR_SYSCALL_BASE + 191)
-#endif
-#ifndef __NR_stat64
-#define __NR_stat64 (__NR_SYSCALL_BASE + 195)
-#endif
-#ifndef __NR_fstat64
-#define __NR_fstat64 (__NR_SYSCALL_BASE + 197)
-#endif
-#ifndef __NR_setresuid32
-#define __NR_setresuid32 (__NR_SYSCALL_BASE + 208)
-#define __NR_setresgid32 (__NR_SYSCALL_BASE + 210)
-#endif
-#ifndef __NR_setfsuid32
-#define __NR_setfsuid32 (__NR_SYSCALL_BASE + 215)
-#define __NR_setfsgid32 (__NR_SYSCALL_BASE + 216)
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 (__NR_SYSCALL_BASE + 217)
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid (__NR_SYSCALL_BASE + 224)
-#endif
-#ifndef __NR_readahead
-#define __NR_readahead (__NR_SYSCALL_BASE + 225)
-#endif
-#ifndef __NR_setxattr
-#define __NR_setxattr (__NR_SYSCALL_BASE + 226)
-#endif
-#ifndef __NR_lsetxattr
-#define __NR_lsetxattr (__NR_SYSCALL_BASE + 227)
-#endif
-#ifndef __NR_getxattr
-#define __NR_getxattr (__NR_SYSCALL_BASE + 229)
-#endif
-#ifndef __NR_lgetxattr
-#define __NR_lgetxattr (__NR_SYSCALL_BASE + 230)
-#endif
-#ifndef __NR_futex
-#define __NR_futex (__NR_SYSCALL_BASE + 240)
-#endif
-#ifndef __NR_sched_setaffinity
-#define __NR_sched_setaffinity (__NR_SYSCALL_BASE + 241)
-#define __NR_sched_getaffinity (__NR_SYSCALL_BASE + 242)
-#endif
-#ifndef __NR_set_tid_address
-#define __NR_set_tid_address (__NR_SYSCALL_BASE + 256)
-#endif
-#ifndef __NR_statfs64
-#define __NR_statfs64 (__NR_SYSCALL_BASE + 266)
-#endif
-#ifndef __NR_fstatfs64
-#define __NR_fstatfs64 (__NR_SYSCALL_BASE + 267)
-#endif
-#ifndef __NR_move_pages
-#define __NR_move_pages (__NR_SYSCALL_BASE + 344)
-#endif
-/* End of ARM 3/EABI definitions */
-#elif defined(__x86_64__)
-#ifndef __NR_setresuid
-#define __NR_setresuid 117
-#define __NR_setresgid 119
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid 186
-#endif
-#ifndef __NR_readahead
-#define __NR_readahead 187
-#endif
-#ifndef __NR_setxattr
-#define __NR_setxattr 188
-#endif
-#ifndef __NR_lsetxattr
-#define __NR_lsetxattr 189
-#endif
-#ifndef __NR_getxattr
-#define __NR_getxattr 191
-#endif
-#ifndef __NR_lgetxattr
-#define __NR_lgetxattr 192
-#endif
-#ifndef __NR_futex
-#define __NR_futex 202
-#endif
-#ifndef __NR_sched_setaffinity
-#define __NR_sched_setaffinity 203
-#define __NR_sched_getaffinity 204
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 217
-#endif
-#ifndef __NR_set_tid_address
-#define __NR_set_tid_address 218
-#endif
-#ifndef __NR_fadvise64
-#define __NR_fadvise64 221
-#endif
-#ifndef __NR_openat
-#define __NR_openat 257
-#endif
-#ifndef __NR_newfstatat
-#define __NR_newfstatat 262
-#endif
-#ifndef __NR_unlinkat
-#define __NR_unlinkat 263
-#endif
-#ifndef __NR_move_pages
-#define __NR_move_pages 279
-#endif
-/* End of x86-64 definitions */
-#elif defined(__mips__)
-#if _MIPS_SIM == _MIPS_SIM_ABI32
-#ifndef __NR_setresuid
-#define __NR_setresuid (__NR_Linux + 185)
-#define __NR_setresgid (__NR_Linux + 190)
-#endif
-#ifndef __NR_rt_sigaction
-#define __NR_rt_sigaction (__NR_Linux + 194)
-#define __NR_rt_sigprocmask (__NR_Linux + 195)
-#define __NR_rt_sigpending (__NR_Linux + 196)
-#define __NR_rt_sigsuspend (__NR_Linux + 199)
-#endif
-#ifndef __NR_pread64
-#define __NR_pread64 (__NR_Linux + 200)
-#endif
-#ifndef __NR_pwrite64
-#define __NR_pwrite64 (__NR_Linux + 201)
-#endif
-#ifndef __NR_stat64
-#define __NR_stat64 (__NR_Linux + 213)
-#endif
-#ifndef __NR_fstat64
-#define __NR_fstat64 (__NR_Linux + 215)
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 (__NR_Linux + 219)
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid (__NR_Linux + 222)
-#endif
-#ifndef __NR_readahead
-#define __NR_readahead (__NR_Linux + 223)
-#endif
-#ifndef __NR_setxattr
-#define __NR_setxattr (__NR_Linux + 224)
-#endif
-#ifndef __NR_lsetxattr
-#define __NR_lsetxattr (__NR_Linux + 225)
-#endif
-#ifndef __NR_getxattr
-#define __NR_getxattr (__NR_Linux + 227)
-#endif
-#ifndef __NR_lgetxattr
-#define __NR_lgetxattr (__NR_Linux + 228)
-#endif
-#ifndef __NR_futex
-#define __NR_futex (__NR_Linux + 238)
-#endif
-#ifndef __NR_sched_setaffinity
-#define __NR_sched_setaffinity (__NR_Linux + 239)
-#define __NR_sched_getaffinity (__NR_Linux + 240)
-#endif
-#ifndef __NR_set_tid_address
-#define __NR_set_tid_address (__NR_Linux + 252)
-#endif
-#ifndef __NR_statfs64
-#define __NR_statfs64 (__NR_Linux + 255)
-#endif
-#ifndef __NR_fstatfs64
-#define __NR_fstatfs64 (__NR_Linux + 256)
-#endif
-#ifndef __NR_openat
-#define __NR_openat (__NR_Linux + 288)
-#endif
-#ifndef __NR_fstatat
-#define __NR_fstatat (__NR_Linux + 293)
-#endif
-#ifndef __NR_unlinkat
-#define __NR_unlinkat (__NR_Linux + 294)
-#endif
-#ifndef __NR_move_pages
-#define __NR_move_pages (__NR_Linux + 308)
-#endif
-/* End of MIPS (old 32bit API) definitions */
-#elif _MIPS_SIM == _MIPS_SIM_ABI64
-#ifndef __NR_setresuid
-#define __NR_setresuid (__NR_Linux + 115)
-#define __NR_setresgid (__NR_Linux + 117)
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid (__NR_Linux + 178)
-#endif
-#ifndef __NR_readahead
-#define __NR_readahead (__NR_Linux + 179)
-#endif
-#ifndef __NR_setxattr
-#define __NR_setxattr (__NR_Linux + 180)
-#endif
-#ifndef __NR_lsetxattr
-#define __NR_lsetxattr (__NR_Linux + 181)
-#endif
-#ifndef __NR_getxattr
-#define __NR_getxattr (__NR_Linux + 183)
-#endif
-#ifndef __NR_lgetxattr
-#define __NR_lgetxattr (__NR_Linux + 184)
-#endif
-#ifndef __NR_futex
-#define __NR_futex (__NR_Linux + 194)
-#endif
-#ifndef __NR_sched_setaffinity
-#define __NR_sched_setaffinity (__NR_Linux + 195)
-#define __NR_sched_getaffinity (__NR_Linux + 196)
-#endif
-#ifndef __NR_set_tid_address
-#define __NR_set_tid_address (__NR_Linux + 212)
-#endif
-#ifndef __NR_openat
-#define __NR_openat (__NR_Linux + 247)
-#endif
-#ifndef __NR_fstatat
-#define __NR_fstatat (__NR_Linux + 252)
-#endif
-#ifndef __NR_unlinkat
-#define __NR_unlinkat (__NR_Linux + 253)
-#endif
-#ifndef __NR_move_pages
-#define __NR_move_pages (__NR_Linux + 267)
-#endif
-/* End of MIPS (64bit API) definitions */
-#else
-#ifndef __NR_setresuid
-#define __NR_setresuid (__NR_Linux + 115)
-#define __NR_setresgid (__NR_Linux + 117)
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid (__NR_Linux + 178)
-#endif
-#ifndef __NR_readahead
-#define __NR_readahead (__NR_Linux + 179)
-#endif
-#ifndef __NR_setxattr
-#define __NR_setxattr (__NR_Linux + 180)
-#endif
-#ifndef __NR_lsetxattr
-#define __NR_lsetxattr (__NR_Linux + 181)
-#endif
-#ifndef __NR_getxattr
-#define __NR_getxattr (__NR_Linux + 183)
-#endif
-#ifndef __NR_lgetxattr
-#define __NR_lgetxattr (__NR_Linux + 184)
-#endif
-#ifndef __NR_futex
-#define __NR_futex (__NR_Linux + 194)
-#endif
-#ifndef __NR_sched_setaffinity
-#define __NR_sched_setaffinity (__NR_Linux + 195)
-#define __NR_sched_getaffinity (__NR_Linux + 196)
-#endif
-#ifndef __NR_set_tid_address
-#define __NR_set_tid_address (__NR_Linux + 213)
-#endif
-#ifndef __NR_statfs64
-#define __NR_statfs64 (__NR_Linux + 217)
-#endif
-#ifndef __NR_fstatfs64
-#define __NR_fstatfs64 (__NR_Linux + 218)
-#endif
-#ifndef __NR_openat
-#define __NR_openat (__NR_Linux + 251)
-#endif
-#ifndef __NR_fstatat
-#define __NR_fstatat (__NR_Linux + 256)
-#endif
-#ifndef __NR_unlinkat
-#define __NR_unlinkat (__NR_Linux + 257)
-#endif
-#ifndef __NR_move_pages
-#define __NR_move_pages (__NR_Linux + 271)
-#endif
-/* End of MIPS (new 32bit API) definitions */
-#endif
-/* End of MIPS definitions */
-#elif defined(__PPC__)
-#ifndef __NR_setfsuid
-#define __NR_setfsuid 138
-#define __NR_setfsgid 139
-#endif
-#ifndef __NR_setresuid
-#define __NR_setresuid 164
-#define __NR_setresgid 169
-#endif
-#ifndef __NR_rt_sigaction
-#define __NR_rt_sigaction 173
-#define __NR_rt_sigprocmask 174
-#define __NR_rt_sigpending 175
-#define __NR_rt_sigsuspend 178
-#endif
-#ifndef __NR_pread64
-#define __NR_pread64 179
-#endif
-#ifndef __NR_pwrite64
-#define __NR_pwrite64 180
-#endif
-#ifndef __NR_ugetrlimit
-#define __NR_ugetrlimit 190
-#endif
-#ifndef __NR_readahead
-#define __NR_readahead 191
-#endif
-#ifndef __NR_stat64
-#define __NR_stat64 195
-#endif
-#ifndef __NR_fstat64
-#define __NR_fstat64 197
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 202
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid 207
-#endif
-#ifndef __NR_setxattr
-#define __NR_setxattr 209
-#endif
-#ifndef __NR_lsetxattr
-#define __NR_lsetxattr 210
-#endif
-#ifndef __NR_getxattr
-#define __NR_getxattr 212
-#endif
-#ifndef __NR_lgetxattr
-#define __NR_lgetxattr 213
-#endif
-#ifndef __NR_futex
-#define __NR_futex 221
-#endif
-#ifndef __NR_sched_setaffinity
-#define __NR_sched_setaffinity 222
-#define __NR_sched_getaffinity 223
-#endif
-#ifndef __NR_set_tid_address
-#define __NR_set_tid_address 232
-#endif
-#ifndef __NR_statfs64
-#define __NR_statfs64 252
-#endif
-#ifndef __NR_fstatfs64
-#define __NR_fstatfs64 253
-#endif
-#ifndef __NR_fadvise64_64
-#define __NR_fadvise64_64 254
-#endif
-#ifndef __NR_openat
-#define __NR_openat 286
-#endif
-#ifndef __NR_fstatat64
-#define __NR_fstatat64 291
-#endif
-#ifndef __NR_unlinkat
-#define __NR_unlinkat 292
-#endif
-#ifndef __NR_move_pages
-#define __NR_move_pages 301
-#endif
-/* End of powerpc defininitions */
-#endif
-
-
-/* After forking, we must make sure to only call system calls. */
-#if __BOUNDED_POINTERS__
- #error "Need to port invocations of syscalls for bounded ptrs"
-#else
- /* The core dumper and the thread lister get executed after threads
- * have been suspended. As a consequence, we cannot call any functions
- * that acquire locks. Unfortunately, libc wraps most system calls
- * (e.g. in order to implement pthread_atfork, and to make calls
- * cancellable), which means we cannot call these functions. Instead,
- * we have to call syscall() directly.
- */
- #undef LSS_ERRNO
- #ifdef SYS_ERRNO
- /* Allow the including file to override the location of errno. This can
- * be useful when using clone() with the CLONE_VM option.
- */
- #define LSS_ERRNO SYS_ERRNO
- #else
- #define LSS_ERRNO errno
- #endif
-
- #undef LSS_INLINE
- #ifdef SYS_INLINE
- #define LSS_INLINE SYS_INLINE
- #else
- #define LSS_INLINE static inline
- #endif
-
- /* Allow the including file to override the prefix used for all new
- * system calls. By default, it will be set to "sys_".
- */
- #undef LSS_NAME
- #ifndef SYS_PREFIX
- #define LSS_NAME(name) sys_##name
- #elif SYS_PREFIX < 0
- #define LSS_NAME(name) name
- #elif SYS_PREFIX == 0
- #define LSS_NAME(name) sys0_##name
- #elif SYS_PREFIX == 1
- #define LSS_NAME(name) sys1_##name
- #elif SYS_PREFIX == 2
- #define LSS_NAME(name) sys2_##name
- #elif SYS_PREFIX == 3
- #define LSS_NAME(name) sys3_##name
- #elif SYS_PREFIX == 4
- #define LSS_NAME(name) sys4_##name
- #elif SYS_PREFIX == 5
- #define LSS_NAME(name) sys5_##name
- #elif SYS_PREFIX == 6
- #define LSS_NAME(name) sys6_##name
- #elif SYS_PREFIX == 7
- #define LSS_NAME(name) sys7_##name
- #elif SYS_PREFIX == 8
- #define LSS_NAME(name) sys8_##name
- #elif SYS_PREFIX == 9
- #define LSS_NAME(name) sys9_##name
- #endif
-
- #undef LSS_RETURN
- #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) \
- || defined(__ARM_EABI__))
- /* Failing system calls return a negative result in the range of
- * -1..-4095. These are "errno" values with the sign inverted.
- */
- #define LSS_RETURN(type, res) \
- do { \
- if ((unsigned long)(res) >= (unsigned long)(-4095)) { \
- LSS_ERRNO = -(res); \
- res = -1; \
- } \
- return (type) (res); \
- } while (0)
- #elif defined(__mips__)
- /* On MIPS, failing system calls return -1, and set errno in a
- * separate CPU register.
- */
- #define LSS_RETURN(type, res, err) \
- do { \
- if (err) { \
- LSS_ERRNO = (res); \
- res = -1; \
- } \
- return (type) (res); \
- } while (0)
- #elif defined(__PPC__)
- /* On PPC, failing system calls return -1, and set errno in a
- * separate CPU register. See linux/unistd.h.
- */
- #define LSS_RETURN(type, res, err) \
- do { \
- if (err & 0x10000000 ) { \
- LSS_ERRNO = (res); \
- res = -1; \
- } \
- return (type) (res); \
- } while (0)
- #endif
- #if defined(__i386__)
- /* In PIC mode (e.g. when building shared libraries), gcc for i386
- * reserves ebx. Unfortunately, most distribution ship with implementations
- * of _syscallX() which clobber ebx.
- * Also, most definitions of _syscallX() neglect to mark "memory" as being
- * clobbered. This causes problems with compilers, that do a better job
- * at optimizing across __asm__ calls.
- * So, we just have to redefine all of the _syscallX() macros.
- */
- #undef LSS_BODY
- #define LSS_BODY(type,args...) \
- long __res; \
- __asm__ __volatile__("push %%ebx\n" \
- "movl %2,%%ebx\n" \
- "int $0x80\n" \
- "pop %%ebx" \
- args \
- : "memory"); \
- LSS_RETURN(type,__res)
- #undef _syscall0
- #define _syscall0(type,name) \
- type LSS_NAME(name)(void) { \
- long __res; \
- __asm__ volatile("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name) \
- : "memory"); \
- LSS_RETURN(type,__res); \
- }
- #undef _syscall1
- #define _syscall1(type,name,type1,arg1) \
- type LSS_NAME(name)(type1 arg1) { \
- LSS_BODY(type, \
- : "=a" (__res) \
- : "0" (__NR_##name), "ri" ((long)(arg1))); \
- }
- #undef _syscall2
- #define _syscall2(type,name,type1,arg1,type2,arg2) \
- type LSS_NAME(name)(type1 arg1,type2 arg2) { \
- LSS_BODY(type, \
- : "=a" (__res) \
- : "0" (__NR_##name),"ri" ((long)(arg1)), "c" ((long)(arg2))); \
- }
- #undef _syscall3
- #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
- type LSS_NAME(name)(type1 arg1,type2 arg2,type3 arg3) { \
- LSS_BODY(type, \
- : "=a" (__res) \
- : "0" (__NR_##name), "ri" ((long)(arg1)), "c" ((long)(arg2)), \
- "d" ((long)(arg3))); \
- }
- #undef _syscall4
- #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- LSS_BODY(type, \
- : "=a" (__res) \
- : "0" (__NR_##name), "ri" ((long)(arg1)), "c" ((long)(arg2)), \
- "d" ((long)(arg3)),"S" ((long)(arg4))); \
- }
- #undef _syscall5
- #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- long __res; \
- __asm__ __volatile__("push %%ebx\n" \
- "movl %2,%%ebx\n" \
- "movl %1,%%eax\n" \
- "int $0x80\n" \
- "pop %%ebx" \
- : "=a" (__res) \
- : "i" (__NR_##name), "ri" ((long)(arg1)), \
- "c" ((long)(arg2)), "d" ((long)(arg3)), \
- "S" ((long)(arg4)), "D" ((long)(arg5)) \
- : "memory"); \
- LSS_RETURN(type,__res); \
- }
- #undef _syscall6
- #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5,type6,arg6) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5, type6 arg6) { \
- long __res; \
- struct { long __a1; long __a6; } __s = { (long)arg1, (long) arg6 }; \
- __asm__ __volatile__("push %%ebp\n" \
- "push %%ebx\n" \
- "movl 4(%2),%%ebp\n" \
- "movl 0(%2), %%ebx\n" \
- "movl %1,%%eax\n" \
- "int $0x80\n" \
- "pop %%ebx\n" \
- "pop %%ebp" \
- : "=a" (__res) \
- : "i" (__NR_##name), "0" ((long)(&__s)), \
- "c" ((long)(arg2)), "d" ((long)(arg3)), \
- "S" ((long)(arg4)), "D" ((long)(arg5)) \
- : "memory"); \
- LSS_RETURN(type,__res); \
- }
- LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
- int flags, void *arg, int *parent_tidptr,
- void *newtls, int *child_tidptr) {
- long __res;
- __asm__ __volatile__(/* if (fn == NULL)
- * return -EINVAL;
- */
- "movl %3,%%ecx\n"
- "jecxz 1f\n"
-
- /* if (child_stack == NULL)
- * return -EINVAL;
- */
- "movl %4,%%ecx\n"
- "jecxz 1f\n"
-
- /* Set up alignment of the child stack:
- * child_stack = (child_stack & ~0xF) - 20;
- */
- "andl $-16,%%ecx\n"
- "subl $20,%%ecx\n"
-
- /* Push "arg" and "fn" onto the stack that will be
- * used by the child.
- */
- "movl %6,%%eax\n"
- "movl %%eax,4(%%ecx)\n"
- "movl %3,%%eax\n"
- "movl %%eax,(%%ecx)\n"
-
- /* %eax = syscall(%eax = __NR_clone,
- * %ebx = flags,
- * %ecx = child_stack,
- * %edx = parent_tidptr,
- * %esi = newtls,
- * %edi = child_tidptr)
- * Also, make sure that %ebx gets preserved as it is
- * used in PIC mode.
- */
- "movl %8,%%esi\n"
- "movl %7,%%edx\n"
- "movl %5,%%eax\n"
- "movl %9,%%edi\n"
- "pushl %%ebx\n"
- "movl %%eax,%%ebx\n"
- "movl %2,%%eax\n"
- "int $0x80\n"
-
- /* In the parent: restore %ebx
- * In the child: move "fn" into %ebx
- */
- "popl %%ebx\n"
-
- /* if (%eax != 0)
- * return %eax;
- */
- "test %%eax,%%eax\n"
- "jnz 1f\n"
-
- /* In the child, now. Terminate frame pointer chain.
- */
- "movl $0,%%ebp\n"
-
- /* Call "fn". "arg" is already on the stack.
- */
- "call *%%ebx\n"
-
- /* Call _exit(%ebx). Unfortunately older versions
- * of gcc restrict the number of arguments that can
- * be passed to asm(). So, we need to hard-code the
- * system call number.
- */
- "movl %%eax,%%ebx\n"
- "movl $1,%%eax\n"
- "int $0x80\n"
-
- /* Return to parent.
- */
- "1:\n"
- : "=a" (__res)
- : "0"(-EINVAL), "i"(__NR_clone),
- "m"(fn), "m"(child_stack), "m"(flags), "m"(arg),
- "m"(parent_tidptr), "m"(newtls), "m"(child_tidptr)
- : "memory", "ecx", "edx", "esi", "edi");
- LSS_RETURN(int, __res);
- }
-
- #define __NR__fadvise64_64 __NR_fadvise64_64
- LSS_INLINE _syscall6(int, _fadvise64_64, int, fd,
- unsigned, offset_lo, unsigned, offset_hi,
- unsigned, len_lo, unsigned, len_hi,
- int, advice)
-
- LSS_INLINE int LSS_NAME(fadvise64)(int fd, loff_t offset,
- loff_t len, int advice) {
- return LSS_NAME(_fadvise64_64)(fd,
- (unsigned)offset, (unsigned)(offset >>32),
- (unsigned)len, (unsigned)(len >> 32),
- advice);
- }
-
- LSS_INLINE void (*LSS_NAME(restore_rt)(void))(void) {
- /* On i386, the kernel does not know how to return from a signal
- * handler. Instead, it relies on user space to provide a
- * restorer function that calls the {rt_,}sigreturn() system call.
- * Unfortunately, we cannot just reference the glibc version of this
- * function, as glibc goes out of its way to make it inaccessible.
- */
- void (*res)(void);
- __asm__ __volatile__("call 2f\n"
- "0:.align 16\n"
- "1:movl %1,%%eax\n"
- "int $0x80\n"
- "2:popl %0\n"
- "addl $(1b-0b),%0\n"
- : "=a" (res)
- : "i" (__NR_rt_sigreturn));
- return res;
- }
- LSS_INLINE void (*LSS_NAME(restore)(void))(void) {
- /* On i386, the kernel does not know how to return from a signal
- * handler. Instead, it relies on user space to provide a
- * restorer function that calls the {rt_,}sigreturn() system call.
- * Unfortunately, we cannot just reference the glibc version of this
- * function, as glibc goes out of its way to make it inaccessible.
- */
- void (*res)(void);
- __asm__ __volatile__("call 2f\n"
- "0:.align 16\n"
- "1:pop %%eax\n"
- "movl %1,%%eax\n"
- "int $0x80\n"
- "2:popl %0\n"
- "addl $(1b-0b),%0\n"
- : "=a" (res)
- : "i" (__NR_sigreturn));
- return res;
- }
- #elif defined(__x86_64__)
- /* There are no known problems with any of the _syscallX() macros
- * currently shipping for x86_64, but we still need to be able to define
- * our own version so that we can override the location of the errno
- * location (e.g. when using the clone() system call with the CLONE_VM
- * option).
- */
- #undef LSS_BODY
- #define LSS_BODY(type,name, ...) \
- long __res; \
- __asm__ __volatile__("syscall" : "=a" (__res) : "0" (__NR_##name), \
- ##__VA_ARGS__ : "r11", "rcx", "memory"); \
- LSS_RETURN(type, __res)
- #undef _syscall0
- #define _syscall0(type,name) \
- type LSS_NAME(name)() { \
- LSS_BODY(type, name); \
- }
- #undef _syscall1
- #define _syscall1(type,name,type1,arg1) \
- type LSS_NAME(name)(type1 arg1) { \
- LSS_BODY(type, name, "D" ((long)(arg1))); \
- }
- #undef _syscall2
- #define _syscall2(type,name,type1,arg1,type2,arg2) \
- type LSS_NAME(name)(type1 arg1, type2 arg2) { \
- LSS_BODY(type, name, "D" ((long)(arg1)), "S" ((long)(arg2))); \
- }
- #undef _syscall3
- #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
- LSS_BODY(type, name, "D" ((long)(arg1)), "S" ((long)(arg2)), \
- "d" ((long)(arg3))); \
- }
- #undef _syscall4
- #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- long __res; \
- __asm__ __volatile__("movq %5,%%r10; syscall" : \
- "=a" (__res) : "0" (__NR_##name), \
- "D" ((long)(arg1)), "S" ((long)(arg2)), "d" ((long)(arg3)), \
- "g" ((long)(arg4)) : "r10", "r11", "rcx", "memory"); \
- LSS_RETURN(type, __res); \
- }
- #undef _syscall5
- #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- long __res; \
- __asm__ __volatile__("movq %5,%%r10; movq %6,%%r8; syscall" : \
- "=a" (__res) : "0" (__NR_##name), \
- "D" ((long)(arg1)), "S" ((long)(arg2)), "d" ((long)(arg3)), \
- "g" ((long)(arg4)), "g" ((long)(arg5)) : \
- "r8", "r10", "r11", "rcx", "memory"); \
- LSS_RETURN(type, __res); \
- }
- #undef _syscall6
- #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5,type6,arg6) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5, type6 arg6) { \
- long __res; \
- __asm__ __volatile__("movq %5,%%r10; movq %6,%%r8; movq %7,%%r9;" \
- "syscall" : \
- "=a" (__res) : "0" (__NR_##name), \
- "D" ((long)(arg1)), "S" ((long)(arg2)), "d" ((long)(arg3)), \
- "g" ((long)(arg4)), "g" ((long)(arg5)), "g" ((long)(arg6)) : \
- "r8", "r9", "r10", "r11", "rcx", "memory"); \
- LSS_RETURN(type, __res); \
- }
- LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
- int flags, void *arg, int *parent_tidptr,
- void *newtls, int *child_tidptr) {
- long __res;
- {
- register void *__tls __asm__("r8") = newtls;
- register int *__ctid __asm__("r10") = child_tidptr;
- __asm__ __volatile__(/* if (fn == NULL)
- * return -EINVAL;
- */
- "testq %4,%4\n"
- "jz 1f\n"
-
- /* if (child_stack == NULL)
- * return -EINVAL;
- */
- "testq %5,%5\n"
- "jz 1f\n"
-
- /* childstack -= 2*sizeof(void *);
- */
- "subq $16,%5\n"
-
- /* Push "arg" and "fn" onto the stack that will be
- * used by the child.
- */
- "movq %7,8(%5)\n"
- "movq %4,0(%5)\n"
-
- /* %rax = syscall(%rax = __NR_clone,
- * %rdi = flags,
- * %rsi = child_stack,
- * %rdx = parent_tidptr,
- * %r8 = new_tls,
- * %r10 = child_tidptr)
- */
- "movq %2,%%rax\n"
- "syscall\n"
-
- /* if (%rax != 0)
- * return;
- */
- "testq %%rax,%%rax\n"
- "jnz 1f\n"
-
- /* In the child. Terminate frame pointer chain.
- */
- "xorq %%rbp,%%rbp\n"
-
- /* Call "fn(arg)".
- */
- "popq %%rax\n"
- "popq %%rdi\n"
- "call *%%rax\n"
-
- /* Call _exit(%ebx).
- */
- "movq %%rax,%%rdi\n"
- "movq %3,%%rax\n"
- "syscall\n"
-
- /* Return to parent.
- */
- "1:\n"
- : "=a" (__res)
- : "0"(-EINVAL), "i"(__NR_clone), "i"(__NR_exit),
- "r"(fn), "S"(child_stack), "D"(flags), "r"(arg),
- "d"(parent_tidptr), "r"(__tls), "r"(__ctid)
- : "memory", "r11", "rcx");
- }
- LSS_RETURN(int, __res);
- }
- LSS_INLINE _syscall4(int, fadvise64, int, fd, loff_t, offset, loff_t, len,
- int, advice)
-
- LSS_INLINE void (*LSS_NAME(restore_rt)(void))(void) {
- /* On x86-64, the kernel does not know how to return from
- * a signal handler. Instead, it relies on user space to provide a
- * restorer function that calls the rt_sigreturn() system call.
- * Unfortunately, we cannot just reference the glibc version of this
- * function, as glibc goes out of its way to make it inaccessible.
- */
- void (*res)(void);
- __asm__ __volatile__("call 2f\n"
- "0:.align 16\n"
- "1:movq %1,%%rax\n"
- "syscall\n"
- "2:popq %0\n"
- "addq $(1b-0b),%0\n"
- : "=a" (res)
- : "i" (__NR_rt_sigreturn));
- return res;
- }
- #elif defined(__ARM_ARCH_3__)
- #undef LSS_REG
- #define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
- #undef LSS_BODY
- #define LSS_BODY(type,name,args...) \
- register long __res_r0 __asm__("r0"); \
- long __res; \
- __asm__ __volatile__ (__syscall(name) \
- : "=r"(__res_r0) : args : "lr", "memory"); \
- __res = __res_r0; \
- LSS_RETURN(type, __res)
- #undef _syscall0
- #define _syscall0(type, name) \
- type LSS_NAME(name)() { \
- LSS_BODY(type, name); \
- }
- #undef _syscall1
- #define _syscall1(type, name, type1, arg1) \
- type LSS_NAME(name)(type1 arg1) { \
- LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0)); \
- }
- #undef _syscall2
- #define _syscall2(type, name, type1, arg1, type2, arg2) \
- type LSS_NAME(name)(type1 arg1, type2 arg2) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1)); \
- }
- #undef _syscall3
- #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2)); \
- }
- #undef _syscall4
- #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_REG(3, arg4); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3)); \
- }
- #undef _syscall5
- #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_REG(3, arg4); LSS_REG(4, arg5); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \
- "r"(__r4)); \
- }
- #undef _syscall6
- #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5,type6,arg6) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5, type6 arg6) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \
- "r"(__r4), "r"(__r5)); \
- }
- LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
- int flags, void *arg, int *parent_tidptr,
- void *newtls, int *child_tidptr) {
- long __res;
- {
- register int __flags __asm__("r0") = flags;
- register void *__stack __asm__("r1") = child_stack;
- register void *__ptid __asm__("r2") = parent_tidptr;
- register void *__tls __asm__("r3") = newtls;
- register int *__ctid __asm__("r4") = child_tidptr;
- __asm__ __volatile__(/* if (fn == NULL || child_stack == NULL)
- * return -EINVAL;
- */
- "cmp %2,#0\n"
- "cmpne %3,#0\n"
- "moveq %0,%1\n"
- "beq 1f\n"
-
- /* Push "arg" and "fn" onto the stack that will be
- * used by the child.
- */
- "str %5,[%3,#-4]!\n"
- "str %2,[%3,#-4]!\n"
-
- /* %r0 = syscall(%r0 = flags,
- * %r1 = child_stack,
- * %r2 = parent_tidptr,
- * %r3 = newtls,
- * %r4 = child_tidptr)
- */
- __syscall(clone)"\n"
-
- /* if (%r0 != 0)
- * return %r0;
- */
- "movs %0,r0\n"
- "bne 1f\n"
-
- /* In the child, now. Call "fn(arg)".
- */
- "ldr r0,[sp, #4]\n"
- "mov lr,pc\n"
- "ldr pc,[sp]\n"
-
- /* Call _exit(%r0).
- */
- __syscall(exit)"\n"
- "1:\n"
- : "=r" (__res)
- : "i"(-EINVAL),
- "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
- "r"(__ptid), "r"(__tls), "r"(__ctid)
- : "cc", "lr", "memory");
- }
- LSS_RETURN(int, __res);
- }
- #elif defined(__ARM_EABI__)
- /* Most definitions of _syscallX() neglect to mark "memory" as being
- * clobbered. This causes problems with compilers, that do a better job
- * at optimizing across __asm__ calls.
- * So, we just have to redefine all fo the _syscallX() macros.
- */
- #undef LSS_REG
- #define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
- #undef LSS_BODY
- #define LSS_BODY(type,name,args...) \
- register long __res_r0 __asm__("r0"); \
- long __res; \
- __asm__ __volatile__ ("push {r7}\n" \
- "mov r7, %1\n" \
- "swi 0x0\n" \
- "pop {r7}\n" \
- : "=r"(__res_r0) \
- : "i"(__NR_##name) , ## args \
- : "lr", "memory"); \
- __res = __res_r0; \
- LSS_RETURN(type, __res)
- #undef _syscall0
- #define _syscall0(type, name) \
- type LSS_NAME(name)() { \
- LSS_BODY(type, name); \
- }
- #undef _syscall1
- #define _syscall1(type, name, type1, arg1) \
- type LSS_NAME(name)(type1 arg1) { \
- LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0)); \
- }
- #undef _syscall2
- #define _syscall2(type, name, type1, arg1, type2, arg2) \
- type LSS_NAME(name)(type1 arg1, type2 arg2) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1)); \
- }
- #undef _syscall3
- #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2)); \
- }
- #undef _syscall4
- #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_REG(3, arg4); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3)); \
- }
- #undef _syscall5
- #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_REG(3, arg4); LSS_REG(4, arg5); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \
- "r"(__r4)); \
- }
- #undef _syscall6
- #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5,type6,arg6) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5, type6 arg6) { \
- LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
- LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6); \
- LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \
- "r"(__r4), "r"(__r5)); \
- }
- LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
- int flags, void *arg, int *parent_tidptr,
- void *newtls, int *child_tidptr) {
- long __res;
- {
- register int __flags __asm__("r0") = flags;
- register void *__stack __asm__("r1") = child_stack;
- register void *__ptid __asm__("r2") = parent_tidptr;
- register void *__tls __asm__("r3") = newtls;
- register int *__ctid __asm__("r4") = child_tidptr;
- __asm__ __volatile__(/* if (fn == NULL || child_stack == NULL)
- * return -EINVAL;
- */
- "cmp %2,#0\n"
- "cmpne %3,#0\n"
- "moveq %0,%1\n"
- "beq 1f\n"
-
- /* Push "arg" and "fn" onto the stack that will be
- * used by the child.
- */
- "str %5,[%3,#-4]!\n"
- "str %2,[%3,#-4]!\n"
-
- /* %r0 = syscall(%r0 = flags,
- * %r1 = child_stack,
- * %r2 = parent_tidptr,
- * %r3 = newtls,
- * %r4 = child_tidptr)
- */
- "mov r7, %9\n"
- "swi 0x0\n"
-
- /* if (%r0 != 0)
- * return %r0;
- */
- "movs %0,r0\n"
- "bne 1f\n"
-
- /* In the child, now. Call "fn(arg)".
- */
- "ldr r0,[sp, #4]\n"
- "mov lr,pc\n"
- "ldr pc,[sp]\n"
-
- /* Call _exit(%r0).
- */
- "mov r7, %10\n"
- "swi 0x0\n"
- "1:\n"
- : "=r" (__res)
- : "i"(-EINVAL),
- "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
- "r"(__ptid), "r"(__tls), "r"(__ctid),
- "i"(__NR_clone), "i"(__NR_exit)
- : "cc", "r7", "lr", "memory");
- }
- LSS_RETURN(int, __res);
- }
- #elif defined(__mips__)
- #undef LSS_REG
- #define LSS_REG(r,a) register unsigned long __r##r __asm__("$"#r) = \
- (unsigned long)(a)
- #undef LSS_BODY
- #define LSS_BODY(type,name,r7,...) \
- register unsigned long __v0 __asm__("$2") = __NR_##name; \
- __asm__ __volatile__ ("syscall\n" \
- : "=&r"(__v0), r7 (__r7) \
- : "0"(__v0), ##__VA_ARGS__ \
- : "$8", "$9", "$10", "$11", "$12", \
- "$13", "$14", "$15", "$24", "memory"); \
- LSS_RETURN(type, __v0, __r7)
- #undef _syscall0
- #define _syscall0(type, name) \
- type LSS_NAME(name)() { \
- register unsigned long __r7 __asm__("$7"); \
- LSS_BODY(type, name, "=r"); \
- }
- #undef _syscall1
- #define _syscall1(type, name, type1, arg1) \
- type LSS_NAME(name)(type1 arg1) { \
- register unsigned long __r7 __asm__("$7"); \
- LSS_REG(4, arg1); LSS_BODY(type, name, "=r", "r"(__r4)); \
- }
- #undef _syscall2
- #define _syscall2(type, name, type1, arg1, type2, arg2) \
- type LSS_NAME(name)(type1 arg1, type2 arg2) { \
- register unsigned long __r7 __asm__("$7"); \
- LSS_REG(4, arg1); LSS_REG(5, arg2); \
- LSS_BODY(type, name, "=r", "r"(__r4), "r"(__r5)); \
- }
- #undef _syscall3
- #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
- register unsigned long __r7 __asm__("$7"); \
- LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \
- LSS_BODY(type, name, "=r", "r"(__r4), "r"(__r5), "r"(__r6)); \
- }
- #undef _syscall4
- #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \
- LSS_REG(7, arg4); \
- LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6)); \
- }
- #undef _syscall5
- #if _MIPS_SIM == _MIPS_SIM_ABI32
- /* The old 32bit MIPS system call API passes the fifth and sixth argument
- * on the stack, whereas the new APIs use registers "r8" and "r9".
- */
- #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \
- LSS_REG(7, arg4); \
- register unsigned long __v0 __asm__("$2"); \
- __asm__ __volatile__ (".set noreorder\n" \
- "lw $2, %6\n" \
- "subu $29, 32\n" \
- "sw $2, 16($29)\n" \
- "li $2, %2\n" \
- "syscall\n" \
- "addiu $29, 32\n" \
- ".set reorder\n" \
- : "=&r"(__v0), "+r" (__r7) \
- : "i" (__NR_##name), "r"(__r4), "r"(__r5), \
- "r"(__r6), "m" ((unsigned long)arg5) \
- : "$8", "$9", "$10", "$11", "$12", \
- "$13", "$14", "$15", "$24", "memory"); \
- LSS_RETURN(type, __v0, __r7); \
- }
- #else
- #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \
- LSS_REG(7, arg4); LSS_REG(8, arg5); \
- LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6), \
- "r"(__r8)); \
- }
- #endif
- #undef _syscall6
- #if _MIPS_SIM == _MIPS_SIM_ABI32
- /* The old 32bit MIPS system call API passes the fifth and sixth argument
- * on the stack, whereas the new APIs use registers "r8" and "r9".
- */
- #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5,type6,arg6) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5, type6 arg6) { \
- LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \
- LSS_REG(7, arg4); \
- register unsigned long __v0 __asm__("$2"); \
- __asm__ __volatile__ (".set noreorder\n" \
- "lw $2, %6\n" \
- "lw $8, %7\n" \
- "subu $29, 32\n" \
- "sw $2, 16($29)\n" \
- "sw $8, 20($29)\n" \
- "li $2, %2\n" \
- "syscall\n" \
- "addiu $29, 32\n" \
- ".set reorder\n" \
- : "=&r"(__v0), "+r" (__r7) \
- : "i" (__NR_##name), "r"(__r4), "r"(__r5), \
- "r"(__r6), "r" ((unsigned long)arg5), \
- "r" ((unsigned long)arg6) \
- : "$8", "$9", "$10", "$11", "$12", \
- "$13", "$14", "$15", "$24", "memory"); \
- LSS_RETURN(type, __v0, __r7); \
- }
- #else
- #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
- type5,arg5,type6,arg6) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5,type6 arg6) { \
- LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \
- LSS_REG(7, arg4); LSS_REG(8, arg5); LSS_REG(9, arg6); \
- LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6), \
- "r"(__r8), "r"(__r9)); \
- }
- #endif
- LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
- int flags, void *arg, int *parent_tidptr,
- void *newtls, int *child_tidptr) {
- register unsigned long __v0 __asm__("$2");
- register unsigned long __r7 __asm__("$7") = (unsigned long)newtls;
- {
- register int __flags __asm__("$4") = flags;
- register void *__stack __asm__("$5") = child_stack;
- register void *__ptid __asm__("$6") = parent_tidptr;
- register int *__ctid __asm__("$8") = child_tidptr;
- __asm__ __volatile__(
- #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
- "subu $29,24\n"
- #elif _MIPS_SIM == _MIPS_SIM_NABI32
- "sub $29,16\n"
- #else
- "dsubu $29,16\n"
- #endif
-
- /* if (fn == NULL || child_stack == NULL)
- * return -EINVAL;
- */
- "li %0,%2\n"
- "beqz %5,1f\n"
- "beqz %6,1f\n"
-
- /* Push "arg" and "fn" onto the stack that will be
- * used by the child.
- */
- #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
- "subu %6,32\n"
- "sw %5,0(%6)\n"
- "sw %8,4(%6)\n"
- #elif _MIPS_SIM == _MIPS_SIM_NABI32
- "sub %6,32\n"
- "sw %5,0(%6)\n"
- "sw %8,8(%6)\n"
- #else
- "dsubu %6,32\n"
- "sd %5,0(%6)\n"
- "sd %8,8(%6)\n"
- #endif
-
- /* $7 = syscall($4 = flags,
- * $5 = child_stack,
- * $6 = parent_tidptr,
- * $7 = newtls,
- * $8 = child_tidptr)
- */
- "li $2,%3\n"
- "syscall\n"
-
- /* if ($7 != 0)
- * return $2;
- */
- "bnez $7,1f\n"
- "bnez $2,1f\n"
-
- /* In the child, now. Call "fn(arg)".
- */
- #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
- "lw $25,0($29)\n"
- "lw $4,4($29)\n"
- #elif _MIPS_SIM == _MIPS_SIM_NABI32
- "lw $25,0($29)\n"
- "lw $4,8($29)\n"
- #else
- "ld $25,0($29)\n"
- "ld $4,8($29)\n"
- #endif
- "jalr $25\n"
-
- /* Call _exit($2)
- */
- "move $4,$2\n"
- "li $2,%4\n"
- "syscall\n"
-
- "1:\n"
- #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
- "addu $29, 24\n"
- #elif _MIPS_SIM == _MIPS_SIM_NABI32
- "add $29, 16\n"
- #else
- "daddu $29,16\n"
- #endif
- : "=&r" (__v0), "=r" (__r7)
- : "i"(-EINVAL), "i"(__NR_clone), "i"(__NR_exit),
- "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
- "r"(__ptid), "r"(__r7), "r"(__ctid)
- : "$9", "$10", "$11", "$12", "$13", "$14", "$15",
- "$24", "memory");
- }
- LSS_RETURN(int, __v0, __r7);
- }
- #elif defined (__PPC__)
- #undef LSS_LOADARGS_0
- #define LSS_LOADARGS_0(name, dummy...) \
- __sc_0 = __NR_##name
- #undef LSS_LOADARGS_1
- #define LSS_LOADARGS_1(name, arg1) \
- LSS_LOADARGS_0(name); \
- __sc_3 = (unsigned long) (arg1)
- #undef LSS_LOADARGS_2
- #define LSS_LOADARGS_2(name, arg1, arg2) \
- LSS_LOADARGS_1(name, arg1); \
- __sc_4 = (unsigned long) (arg2)
- #undef LSS_LOADARGS_3
- #define LSS_LOADARGS_3(name, arg1, arg2, arg3) \
- LSS_LOADARGS_2(name, arg1, arg2); \
- __sc_5 = (unsigned long) (arg3)
- #undef LSS_LOADARGS_4
- #define LSS_LOADARGS_4(name, arg1, arg2, arg3, arg4) \
- LSS_LOADARGS_3(name, arg1, arg2, arg3); \
- __sc_6 = (unsigned long) (arg4)
- #undef LSS_LOADARGS_5
- #define LSS_LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5) \
- LSS_LOADARGS_4(name, arg1, arg2, arg3, arg4); \
- __sc_7 = (unsigned long) (arg5)
- #undef LSS_LOADARGS_6
- #define LSS_LOADARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6) \
- LSS_LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5); \
- __sc_8 = (unsigned long) (arg6)
- #undef LSS_ASMINPUT_0
- #define LSS_ASMINPUT_0 "0" (__sc_0)
- #undef LSS_ASMINPUT_1
- #define LSS_ASMINPUT_1 LSS_ASMINPUT_0, "1" (__sc_3)
- #undef LSS_ASMINPUT_2
- #define LSS_ASMINPUT_2 LSS_ASMINPUT_1, "2" (__sc_4)
- #undef LSS_ASMINPUT_3
- #define LSS_ASMINPUT_3 LSS_ASMINPUT_2, "3" (__sc_5)
- #undef LSS_ASMINPUT_4
- #define LSS_ASMINPUT_4 LSS_ASMINPUT_3, "4" (__sc_6)
- #undef LSS_ASMINPUT_5
- #define LSS_ASMINPUT_5 LSS_ASMINPUT_4, "5" (__sc_7)
- #undef LSS_ASMINPUT_6
- #define LSS_ASMINPUT_6 LSS_ASMINPUT_5, "6" (__sc_8)
- #undef LSS_BODY
- #define LSS_BODY(nr, type, name, args...) \
- long __sc_ret, __sc_err; \
- { \
- register unsigned long __sc_0 __asm__ ("r0"); \
- register unsigned long __sc_3 __asm__ ("r3"); \
- register unsigned long __sc_4 __asm__ ("r4"); \
- register unsigned long __sc_5 __asm__ ("r5"); \
- register unsigned long __sc_6 __asm__ ("r6"); \
- register unsigned long __sc_7 __asm__ ("r7"); \
- register unsigned long __sc_8 __asm__ ("r8"); \
- \
- LSS_LOADARGS_##nr(name, args); \
- __asm__ __volatile__ \
- ("sc\n\t" \
- "mfcr %0" \
- : "=&r" (__sc_0), \
- "=&r" (__sc_3), "=&r" (__sc_4), \
- "=&r" (__sc_5), "=&r" (__sc_6), \
- "=&r" (__sc_7), "=&r" (__sc_8) \
- : LSS_ASMINPUT_##nr \
- : "cr0", "ctr", "memory", \
- "r9", "r10", "r11", "r12"); \
- __sc_ret = __sc_3; \
- __sc_err = __sc_0; \
- } \
- LSS_RETURN(type, __sc_ret, __sc_err)
- #undef _syscall0
- #define _syscall0(type, name) \
- type LSS_NAME(name)(void) { \
- LSS_BODY(0, type, name); \
- }
- #undef _syscall1
- #define _syscall1(type, name, type1, arg1) \
- type LSS_NAME(name)(type1 arg1) { \
- LSS_BODY(1, type, name, arg1); \
- }
- #undef _syscall2
- #define _syscall2(type, name, type1, arg1, type2, arg2) \
- type LSS_NAME(name)(type1 arg1, type2 arg2) { \
- LSS_BODY(2, type, name, arg1, arg2); \
- }
- #undef _syscall3
- #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
- LSS_BODY(3, type, name, arg1, arg2, arg3); \
- }
- #undef _syscall4
- #define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- LSS_BODY(4, type, name, arg1, arg2, arg3, arg4); \
- }
- #undef _syscall5
- #define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- LSS_BODY(5, type, name, arg1, arg2, arg3, arg4, arg5); \
- }
- #undef _syscall6
- #define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
- type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5, type6 arg6) { \
- LSS_BODY(6, type, name, arg1, arg2, arg3, arg4, arg5, arg6); \
- }
- /* clone function adapted from glibc 2.3.6 clone.S */
- /* TODO(csilvers): consider wrapping some args up in a struct, like we
- * do for i386's _syscall6, so we can compile successfully on gcc 2.95
- */
- LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
- int flags, void *arg, int *parent_tidptr,
- void *newtls, int *child_tidptr) {
- long __ret, __err;
- {
- register int (*__fn)(void *) __asm__ ("r8") = fn;
- register void *__cstack __asm__ ("r4") = child_stack;
- register int __flags __asm__ ("r3") = flags;
- register void * __arg __asm__ ("r9") = arg;
- register int * __ptidptr __asm__ ("r5") = parent_tidptr;
- register void * __newtls __asm__ ("r6") = newtls;
- register int * __ctidptr __asm__ ("r7") = child_tidptr;
- __asm__ __volatile__(
- /* check for fn == NULL
- * and child_stack == NULL
- */
- "cmpwi cr0, %6, 0\n\t"
- "cmpwi cr1, %7, 0\n\t"
- "cror cr0*4+eq, cr1*4+eq, cr0*4+eq\n\t"
- "beq- cr0, 1f\n\t"
-
- /* set up stack frame for child */
- "clrrwi %7, %7, 4\n\t"
- "li 0, 0\n\t"
- "stwu 0, -16(%7)\n\t"
-
- /* fn, arg, child_stack are saved across the syscall: r28-30 */
- "mr 28, %6\n\t"
- "mr 29, %7\n\t"
- "mr 27, %9\n\t"
-
- /* syscall */
- "li 0, %4\n\t"
- /* flags already in r3
- * child_stack already in r4
- * ptidptr already in r5
- * newtls already in r6
- * ctidptr already in r7
- */
- "sc\n\t"
-
- /* Test if syscall was successful */
- "cmpwi cr1, 3, 0\n\t"
- "crandc cr1*4+eq, cr1*4+eq, cr0*4+so\n\t"
- "bne- cr1, 1f\n\t"
-
- /* Do the function call */
- "mtctr 28\n\t"
- "mr 3, 27\n\t"
- "bctrl\n\t"
-
- /* Call _exit(r3) */
- "li 0, %5\n\t"
- "sc\n\t"
-
- /* Return to parent */
- "1:\n"
- "mfcr %1\n\t"
- "mr %0, 3\n\t"
- : "=r" (__ret), "=r" (__err)
- : "0" (-1), "1" (EINVAL),
- "i" (__NR_clone), "i" (__NR_exit),
- "r" (__fn), "r" (__cstack), "r" (__flags),
- "r" (__arg), "r" (__ptidptr), "r" (__newtls),
- "r" (__ctidptr)
- : "cr0", "cr1", "memory", "ctr",
- "r0", "r29", "r27", "r28");
- }
- LSS_RETURN(int, __ret, __err);
- }
- #endif
- #define __NR__exit __NR_exit
- #define __NR__gettid __NR_gettid
- #define __NR__mremap __NR_mremap
- LSS_INLINE _syscall1(int, chdir, const char *,p)
- LSS_INLINE _syscall1(int, close, int, f)
- LSS_INLINE _syscall1(int, dup, int, f)
- LSS_INLINE _syscall2(int, dup2, int, s,
- int, d)
- LSS_INLINE _syscall3(int, execve, const char*, f,
- const char*const*,a,const char*const*, e)
- LSS_INLINE _syscall1(int, _exit, int, e)
- LSS_INLINE _syscall3(int, fcntl, int, f,
- int, c, long, a)
- LSS_INLINE _syscall0(pid_t, fork)
- LSS_INLINE _syscall2(int, fstat, int, f,
- struct kernel_stat*, b)
- LSS_INLINE _syscall2(int, fstatfs, int, f,
- struct kernel_statfs*, b)
- LSS_INLINE _syscall4(int, futex, int*, a,
- int, o, int, v,
- struct kernel_timespec*, t)
- LSS_INLINE _syscall3(int, getdents, int, f,
- struct kernel_dirent*, d, int, c)
- LSS_INLINE _syscall3(int, getdents64, int, f,
- struct kernel_dirent64*, d, int, c)
- LSS_INLINE _syscall0(gid_t, getegid)
- LSS_INLINE _syscall0(uid_t, geteuid)
- LSS_INLINE _syscall0(pid_t, getpgrp)
- LSS_INLINE _syscall0(pid_t, getpid)
- LSS_INLINE _syscall0(pid_t, getppid)
- LSS_INLINE _syscall2(int, getpriority, int, a,
- int, b)
-#if !defined(__ARM_EABI__)
- LSS_INLINE _syscall2(int, getrlimit, int, r,
- struct kernel_rlimit*, l)
-#endif
- LSS_INLINE _syscall1(pid_t, getsid, pid_t, p)
- LSS_INLINE _syscall0(pid_t, _gettid)
- LSS_INLINE _syscall2(pid_t, gettimeofday, struct kernel_timeval*, t,
- void*, tz)
- LSS_INLINE _syscall5(int, setxattr, const char *,p,
- const char *, n, const void *,v,
- size_t, s, int, f)
- LSS_INLINE _syscall5(int, lsetxattr, const char *,p,
- const char *, n, const void *,v,
- size_t, s, int, f)
- LSS_INLINE _syscall4(ssize_t, getxattr, const char *,p,
- const char *, n, void *, v, size_t, s)
- LSS_INLINE _syscall4(ssize_t, lgetxattr, const char *,p,
- const char *, n, void *, v, size_t, s)
- LSS_INLINE _syscall2(int, kill, pid_t, p,
- int, s)
- LSS_INLINE _syscall3(off_t, lseek, int, f,
- off_t, o, int, w)
- LSS_INLINE _syscall2(int, munmap, void*, s,
- size_t, l)
- LSS_INLINE _syscall6(long, move_pages, pid_t, p,
- unsigned long, n, void **,g, int *, d,
- int *, s, int, f)
- LSS_INLINE _syscall5(void*, _mremap, void*, o,
- size_t, os, size_t, ns,
- unsigned long, f, void *, a)
- LSS_INLINE _syscall3(int, open, const char*, p,
- int, f, int, m)
- LSS_INLINE _syscall3(int, poll, struct kernel_pollfd*, u,
- unsigned int, n, int, t)
- LSS_INLINE _syscall2(int, prctl, int, o,
- long, a)
- LSS_INLINE _syscall4(long, ptrace, int, r,
- pid_t, p, void *, a, void *, d)
- LSS_INLINE _syscall3(ssize_t, read, int, f,
- void *, b, size_t, c)
- LSS_INLINE _syscall3(int, readlink, const char*, p,
- char*, b, size_t, s)
- LSS_INLINE _syscall4(int, rt_sigaction, int, s,
- const struct kernel_sigaction*, a,
- struct kernel_sigaction*, o, size_t, c)
- LSS_INLINE _syscall2(int, rt_sigpending, struct kernel_sigset_t *, s,
- size_t, c)
- LSS_INLINE _syscall4(int, rt_sigprocmask, int, h,
- const struct kernel_sigset_t*, s,
- struct kernel_sigset_t*, o, size_t, c)
- LSS_INLINE _syscall2(int, rt_sigsuspend,
- const struct kernel_sigset_t*, s, size_t, c)
- LSS_INLINE _syscall3(int, sched_getaffinity,pid_t, p,
- unsigned int, l, unsigned long *, m)
- LSS_INLINE _syscall3(int, sched_setaffinity,pid_t, p,
- unsigned int, l, unsigned long *, m)
- LSS_INLINE _syscall0(int, sched_yield)
- LSS_INLINE _syscall1(long, set_tid_address, int *, t)
- LSS_INLINE _syscall1(int, setfsgid, gid_t, g)
- LSS_INLINE _syscall1(int, setfsuid, uid_t, u)
- LSS_INLINE _syscall2(int, setpgid, pid_t, p,
- pid_t, g)
- LSS_INLINE _syscall3(int, setpriority, int, a,
- int, b, int, p)
- LSS_INLINE _syscall3(int, setresgid, gid_t, r,
- gid_t, e, gid_t, s)
- LSS_INLINE _syscall3(int, setresuid, uid_t, r,
- uid_t, e, uid_t, s)
- LSS_INLINE _syscall2(int, setrlimit, int, r,
- const struct kernel_rlimit*, l)
- LSS_INLINE _syscall0(pid_t, setsid)
- LSS_INLINE _syscall2(int, sigaltstack, const stack_t*, s,
- const stack_t*, o)
- LSS_INLINE _syscall2(int, stat, const char*, f,
- struct kernel_stat*, b)
- LSS_INLINE _syscall2(int, statfs, const char*, f,
- struct kernel_statfs*, b)
- LSS_INLINE _syscall1(int, unlink, const char*, f)
- LSS_INLINE _syscall3(ssize_t, write, int, f,
- const void *, b, size_t, c)
- LSS_INLINE _syscall3(ssize_t, writev, int, f,
- const struct kernel_iovec*, v, size_t, c)
- #if defined(__x86_64__) || \
- (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32)
- LSS_INLINE _syscall3(int, recvmsg, int, s,
- struct kernel_msghdr*, m, int, f)
- LSS_INLINE _syscall3(int, sendmsg, int, s,
- const struct kernel_msghdr*, m, int, f)
- LSS_INLINE _syscall6(int, sendto, int, s,
- const void*, m, size_t, l,
- int, f,
- const struct kernel_sockaddr*, a, int, t)
- LSS_INLINE _syscall2(int, shutdown, int, s,
- int, h)
- LSS_INLINE _syscall3(int, socket, int, d,
- int, t, int, p)
- LSS_INLINE _syscall4(int, socketpair, int, d,
- int, t, int, p, int*, s)
- #endif
- #if defined(__x86_64__)
- LSS_INLINE _syscall6(void*, mmap, void*, s,
- size_t, l, int, p,
- int, f, int, d,
- __off64_t, o)
- LSS_INLINE _syscall4(int, newfstatat, int, d,
- const char *, p,
- struct kernel_stat*, b, int, f)
-
- LSS_INLINE int LSS_NAME(setfsgid32)(gid_t gid) {
- return LSS_NAME(setfsgid)(gid);
- }
-
- LSS_INLINE int LSS_NAME(setfsuid32)(uid_t uid) {
- return LSS_NAME(setfsuid)(uid);
- }
-
- LSS_INLINE int LSS_NAME(setresgid32)(gid_t rgid, gid_t egid, gid_t sgid) {
- return LSS_NAME(setresgid)(rgid, egid, sgid);
- }
-
- LSS_INLINE int LSS_NAME(setresuid32)(uid_t ruid, uid_t euid, uid_t suid) {
- return LSS_NAME(setresuid)(ruid, euid, suid);
- }
-
- LSS_INLINE int LSS_NAME(sigaction)(int signum,
- const struct kernel_sigaction *act,
- struct kernel_sigaction *oldact) {
- /* On x86_64, the kernel requires us to always set our own
- * SA_RESTORER in order to be able to return from a signal handler.
- * This function must have a "magic" signature that the "gdb"
- * (and maybe the kernel?) can recognize.
- */
- if (act != NULL && !(act->sa_flags & SA_RESTORER)) {
- struct kernel_sigaction a = *act;
- a.sa_flags |= SA_RESTORER;
- a.sa_restorer = LSS_NAME(restore_rt)();
- return LSS_NAME(rt_sigaction)(signum, &a, oldact,
- (KERNEL_NSIG+7)/8);
- } else {
- return LSS_NAME(rt_sigaction)(signum, act, oldact,
- (KERNEL_NSIG+7)/8);
- }
- }
-
- LSS_INLINE int LSS_NAME(sigpending)(struct kernel_sigset_t *set) {
- return LSS_NAME(rt_sigpending)(set, (KERNEL_NSIG+7)/8);
- }
-
- LSS_INLINE int LSS_NAME(sigprocmask)(int how,
- const struct kernel_sigset_t *set,
- struct kernel_sigset_t *oldset) {
- return LSS_NAME(rt_sigprocmask)(how, set, oldset, (KERNEL_NSIG+7)/8);
- }
-
- LSS_INLINE int LSS_NAME(sigsuspend)(const struct kernel_sigset_t *set) {
- return LSS_NAME(rt_sigsuspend)(set, (KERNEL_NSIG+7)/8);
- }
- #endif
- #if defined(__x86_64__) || defined(__ARM_ARCH_3__) || \
- defined(__ARM_EABI__) || \
- (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32)
- LSS_INLINE _syscall4(pid_t, wait4, pid_t, p,
- int*, s, int, o,
- struct kernel_rusage*, r)
-
- LSS_INLINE pid_t LSS_NAME(waitpid)(pid_t pid, int *status, int options){
- return LSS_NAME(wait4)(pid, status, options, 0);
- }
- #endif
- #if defined(__i386__) || defined(__x86_64__)
- LSS_INLINE _syscall4(int, openat, int, d, const char *, p, int, f, int, m)
- LSS_INLINE _syscall3(int, unlinkat, int, d, const char *, p, int, f)
- #endif
- #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
- #define __NR__setfsgid32 __NR_setfsgid32
- #define __NR__setfsuid32 __NR_setfsuid32
- #define __NR__setresgid32 __NR_setresgid32
- #define __NR__setresuid32 __NR_setresuid32
-#if defined(__ARM_EABI__)
- LSS_INLINE _syscall2(int, ugetrlimit, int, r,
- struct kernel_rlimit*, l)
-#endif
- LSS_INLINE _syscall1(int, _setfsgid32, gid_t, f)
- LSS_INLINE _syscall1(int, _setfsuid32, uid_t, f)
- LSS_INLINE _syscall3(int, _setresgid32, gid_t, r,
- gid_t, e, gid_t, s)
- LSS_INLINE _syscall3(int, _setresuid32, uid_t, r,
- uid_t, e, uid_t, s)
-
- LSS_INLINE int LSS_NAME(setfsgid32)(gid_t gid) {
- int rc;
- if ((rc = LSS_NAME(_setfsgid32)(gid)) < 0 &&
- LSS_ERRNO == ENOSYS) {
- if ((unsigned int)gid & ~0xFFFFu) {
- rc = EINVAL;
- } else {
- rc = LSS_NAME(setfsgid)(gid);
- }
- }
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(setfsuid32)(uid_t uid) {
- int rc;
- if ((rc = LSS_NAME(_setfsuid32)(uid)) < 0 &&
- LSS_ERRNO == ENOSYS) {
- if ((unsigned int)uid & ~0xFFFFu) {
- rc = EINVAL;
- } else {
- rc = LSS_NAME(setfsuid)(uid);
- }
- }
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(setresgid32)(gid_t rgid, gid_t egid, gid_t sgid) {
- int rc;
- if ((rc = LSS_NAME(_setresgid32)(rgid, egid, sgid)) < 0 &&
- LSS_ERRNO == ENOSYS) {
- if ((unsigned int)rgid & ~0xFFFFu ||
- (unsigned int)egid & ~0xFFFFu ||
- (unsigned int)sgid & ~0xFFFFu) {
- rc = EINVAL;
- } else {
- rc = LSS_NAME(setresgid)(rgid, egid, sgid);
- }
- }
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(setresuid32)(uid_t ruid, uid_t euid, uid_t suid) {
- int rc;
- if ((rc = LSS_NAME(_setresuid32)(ruid, euid, suid)) < 0 &&
- LSS_ERRNO == ENOSYS) {
- if ((unsigned int)ruid & ~0xFFFFu ||
- (unsigned int)euid & ~0xFFFFu ||
- (unsigned int)suid & ~0xFFFFu) {
- rc = EINVAL;
- } else {
- rc = LSS_NAME(setresuid)(ruid, euid, suid);
- }
- }
- return rc;
- }
- #endif
- LSS_INLINE int LSS_NAME(sigemptyset)(struct kernel_sigset_t *set) {
- memset(&set->sig, 0, sizeof(set->sig));
- return 0;
- }
-
- LSS_INLINE int LSS_NAME(sigfillset)(struct kernel_sigset_t *set) {
- memset(&set->sig, -1, sizeof(set->sig));
- return 0;
- }
-
- LSS_INLINE int LSS_NAME(sigaddset)(struct kernel_sigset_t *set,
- int signum) {
- if (signum < 1 || signum > (int)(8*sizeof(set->sig))) {
- LSS_ERRNO = EINVAL;
- return -1;
- } else {
- set->sig[(signum - 1)/(8*sizeof(set->sig[0]))]
- |= 1UL << ((signum - 1) % (8*sizeof(set->sig[0])));
- return 0;
- }
- }
-
- LSS_INLINE int LSS_NAME(sigdelset)(struct kernel_sigset_t *set,
- int signum) {
- if (signum < 1 || signum > (int)(8*sizeof(set->sig))) {
- LSS_ERRNO = EINVAL;
- return -1;
- } else {
- set->sig[(signum - 1)/(8*sizeof(set->sig[0]))]
- &= ~(1UL << ((signum - 1) % (8*sizeof(set->sig[0]))));
- return 0;
- }
- }
-
- LSS_INLINE int LSS_NAME(sigismember)(struct kernel_sigset_t *set,
- int signum) {
- if (signum < 1 || signum > (int)(8*sizeof(set->sig))) {
- LSS_ERRNO = EINVAL;
- return -1;
- } else {
- return !!(set->sig[(signum - 1)/(8*sizeof(set->sig[0]))] &
- (1UL << ((signum - 1) % (8*sizeof(set->sig[0])))));
- }
- }
- #if defined(__i386__) || defined(__ARM_ARCH_3__) || \
- defined(__ARM_EABI__) || \
- (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) || defined(__PPC__)
- #define __NR__sigaction __NR_sigaction
- #define __NR__sigpending __NR_sigpending
- #define __NR__sigprocmask __NR_sigprocmask
- #define __NR__sigsuspend __NR_sigsuspend
- #define __NR__socketcall __NR_socketcall
- LSS_INLINE _syscall2(int, fstat64, int, f,
- struct kernel_stat64 *, b)
- LSS_INLINE _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
- loff_t *, res, uint, wh)
-#if !defined(__ARM_EABI__)
- LSS_INLINE _syscall1(void*, mmap, void*, a)
-#endif
- LSS_INLINE _syscall6(void*, mmap2, void*, s,
- size_t, l, int, p,
- int, f, int, d,
- __off64_t, o)
- LSS_INLINE _syscall3(int, _sigaction, int, s,
- const struct kernel_old_sigaction*, a,
- struct kernel_old_sigaction*, o)
- LSS_INLINE _syscall1(int, _sigpending, unsigned long*, s)
- LSS_INLINE _syscall3(int, _sigprocmask, int, h,
- const unsigned long*, s,
- unsigned long*, o)
- #ifdef __PPC__
- LSS_INLINE _syscall1(int, _sigsuspend, unsigned long, s)
- #else
- LSS_INLINE _syscall3(int, _sigsuspend, const void*, a,
- int, b,
- unsigned long, s)
- #endif
- LSS_INLINE _syscall2(int, stat64, const char *, p,
- struct kernel_stat64 *, b)
-
- LSS_INLINE int LSS_NAME(sigaction)(int signum,
- const struct kernel_sigaction *act,
- struct kernel_sigaction *oldact) {
- int old_errno = LSS_ERRNO;
- int rc;
- struct kernel_sigaction a;
- if (act != NULL) {
- a = *act;
- #ifdef __i386__
- /* On i386, the kernel requires us to always set our own
- * SA_RESTORER when using realtime signals. Otherwise, it does not
- * know how to return from a signal handler. This function must have
- * a "magic" signature that the "gdb" (and maybe the kernel?) can
- * recognize.
- * Apparently, a SA_RESTORER is implicitly set by the kernel, when
- * using non-realtime signals.
- *
- * TODO: Test whether ARM needs a restorer
- */
- if (!(a.sa_flags & SA_RESTORER)) {
- a.sa_flags |= SA_RESTORER;
- a.sa_restorer = (a.sa_flags & SA_SIGINFO)
- ? LSS_NAME(restore_rt)() : LSS_NAME(restore)();
- }
- #endif
- }
- rc = LSS_NAME(rt_sigaction)(signum, act ? &a : act, oldact,
- (KERNEL_NSIG+7)/8);
- if (rc < 0 && LSS_ERRNO == ENOSYS) {
- struct kernel_old_sigaction oa, ooa, *ptr_a = &oa, *ptr_oa = &ooa;
- if (!act) {
- ptr_a = NULL;
- } else {
- oa.sa_handler_ = act->sa_handler_;
- memcpy(&oa.sa_mask, &act->sa_mask, sizeof(oa.sa_mask));
- #ifndef __mips__
- oa.sa_restorer = act->sa_restorer;
- #endif
- oa.sa_flags = act->sa_flags;
- }
- if (!oldact) {
- ptr_oa = NULL;
- }
- LSS_ERRNO = old_errno;
- rc = LSS_NAME(_sigaction)(signum, ptr_a, ptr_oa);
- if (rc == 0 && oldact) {
- if (act) {
- memcpy(oldact, act, sizeof(*act));
- } else {
- memset(oldact, 0, sizeof(*oldact));
- }
- oldact->sa_handler_ = ptr_oa->sa_handler_;
- oldact->sa_flags = ptr_oa->sa_flags;
- memcpy(&oldact->sa_mask, &ptr_oa->sa_mask, sizeof(ptr_oa->sa_mask));
- #ifndef __mips__
- oldact->sa_restorer = ptr_oa->sa_restorer;
- #endif
- }
- }
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(sigpending)(struct kernel_sigset_t *set) {
- int old_errno = LSS_ERRNO;
- int rc = LSS_NAME(rt_sigpending)(set, (KERNEL_NSIG+7)/8);
- if (rc < 0 && LSS_ERRNO == ENOSYS) {
- LSS_ERRNO = old_errno;
- LSS_NAME(sigemptyset)(set);
- rc = LSS_NAME(_sigpending)(&set->sig[0]);
- }
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(sigprocmask)(int how,
- const struct kernel_sigset_t *set,
- struct kernel_sigset_t *oldset) {
- int olderrno = LSS_ERRNO;
- int rc = LSS_NAME(rt_sigprocmask)(how, set, oldset, (KERNEL_NSIG+7)/8);
- if (rc < 0 && LSS_ERRNO == ENOSYS) {
- LSS_ERRNO = olderrno;
- if (oldset) {
- LSS_NAME(sigemptyset)(oldset);
- }
- rc = LSS_NAME(_sigprocmask)(how,
- set ? &set->sig[0] : NULL,
- oldset ? &oldset->sig[0] : NULL);
- }
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(sigsuspend)(const struct kernel_sigset_t *set) {
- int olderrno = LSS_ERRNO;
- int rc = LSS_NAME(rt_sigsuspend)(set, (KERNEL_NSIG+7)/8);
- if (rc < 0 && LSS_ERRNO == ENOSYS) {
- LSS_ERRNO = olderrno;
- rc = LSS_NAME(_sigsuspend)(
- #ifndef __PPC__
- set, 0,
- #endif
- set->sig[0]);
- }
- return rc;
- }
- #endif
- #if defined(__PPC__)
- #undef LSS_SC_LOADARGS_0
- #define LSS_SC_LOADARGS_0(dummy...)
- #undef LSS_SC_LOADARGS_1
- #define LSS_SC_LOADARGS_1(arg1) \
- __sc_4 = (unsigned long) (arg1)
- #undef LSS_SC_LOADARGS_2
- #define LSS_SC_LOADARGS_2(arg1, arg2) \
- LSS_SC_LOADARGS_1(arg1); \
- __sc_5 = (unsigned long) (arg2)
- #undef LSS_SC_LOADARGS_3
- #define LSS_SC_LOADARGS_3(arg1, arg2, arg3) \
- LSS_SC_LOADARGS_2(arg1, arg2); \
- __sc_6 = (unsigned long) (arg3)
- #undef LSS_SC_LOADARGS_4
- #define LSS_SC_LOADARGS_4(arg1, arg2, arg3, arg4) \
- LSS_SC_LOADARGS_3(arg1, arg2, arg3); \
- __sc_7 = (unsigned long) (arg4)
- #undef LSS_SC_LOADARGS_5
- #define LSS_SC_LOADARGS_5(arg1, arg2, arg3, arg4, arg5) \
- LSS_SC_LOADARGS_4(arg1, arg2, arg3, arg4); \
- __sc_8 = (unsigned long) (arg5)
- #undef LSS_SC_BODY
- #define LSS_SC_BODY(nr, type, opt, args...) \
- long __sc_ret, __sc_err; \
- { \
- register unsigned long __sc_0 __asm__ ("r0") = __NR_socketcall; \
- register unsigned long __sc_3 __asm__ ("r3") = opt; \
- register unsigned long __sc_4 __asm__ ("r4"); \
- register unsigned long __sc_5 __asm__ ("r5"); \
- register unsigned long __sc_6 __asm__ ("r6"); \
- register unsigned long __sc_7 __asm__ ("r7"); \
- register unsigned long __sc_8 __asm__ ("r8"); \
- LSS_SC_LOADARGS_##nr(args); \
- __asm__ __volatile__ \
- ("stwu 1, -48(1)\n\t" \
- "stw 4, 20(1)\n\t" \
- "stw 5, 24(1)\n\t" \
- "stw 6, 28(1)\n\t" \
- "stw 7, 32(1)\n\t" \
- "stw 8, 36(1)\n\t" \
- "addi 4, 1, 20\n\t" \
- "sc\n\t" \
- "mfcr %0" \
- : "=&r" (__sc_0), \
- "=&r" (__sc_3), "=&r" (__sc_4), \
- "=&r" (__sc_5), "=&r" (__sc_6), \
- "=&r" (__sc_7), "=&r" (__sc_8) \
- : LSS_ASMINPUT_##nr \
- : "cr0", "ctr", "memory"); \
- __sc_ret = __sc_3; \
- __sc_err = __sc_0; \
- } \
- LSS_RETURN(type, __sc_ret, __sc_err)
-
- LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg,
- int flags){
- LSS_SC_BODY(3, ssize_t, 17, s, msg, flags);
- }
-
- LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s,
- const struct kernel_msghdr *msg,
- int flags) {
- LSS_SC_BODY(3, ssize_t, 16, s, msg, flags);
- }
-
- // TODO(csilvers): why is this ifdef'ed out?
-#if 0
- LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len,
- int flags,
- const struct kernel_sockaddr *to,
- unsigned int tolen) {
- LSS_BODY(6, ssize_t, 11, s, buf, len, flags, to, tolen);
- }
-#endif
-
- LSS_INLINE int LSS_NAME(shutdown)(int s, int how) {
- LSS_SC_BODY(2, int, 13, s, how);
- }
-
- LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) {
- LSS_SC_BODY(3, int, 1, domain, type, protocol);
- }
-
- LSS_INLINE int LSS_NAME(socketpair)(int d, int type, int protocol,
- int sv[2]) {
- LSS_SC_BODY(4, int, 8, d, type, protocol, sv);
- }
- #endif
- #if defined(__ARM_EABI__)
- LSS_INLINE _syscall3(ssize_t, recvmsg, int, s, struct kernel_msghdr*, msg,
- int, flags)
- LSS_INLINE _syscall3(ssize_t, sendmsg, int, s, const struct kernel_msghdr*,
- msg, int, flags)
- LSS_INLINE _syscall6(ssize_t, sendto, int, s, const void*, buf, size_t, len,
- int, falgs, const struct kernel_sockaddr*, to,
- unsigned int, tolen)
- LSS_INLINE _syscall2(int, shutdown, int, s, int, how)
- LSS_INLINE _syscall3(int, socket, int, domain, int, type, int, protocol)
- LSS_INLINE _syscall4(int, socketpair, int, d, int, type, int, protocol,
- int*, sv)
- #endif
- #if defined(__i386__) || defined(__ARM_ARCH_3__) || \
- (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
- #define __NR__socketcall __NR_socketcall
- LSS_INLINE _syscall2(int, _socketcall, int, c,
- va_list, a)
- LSS_INLINE int LSS_NAME(socketcall)(int op, ...) {
- int rc;
- va_list ap;
- va_start(ap, op);
- rc = LSS_NAME(_socketcall)(op, ap);
- va_end(ap);
- return rc;
- }
- LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg,
- int flags){
- return (ssize_t)LSS_NAME(socketcall)(17, s, msg, flags);
- }
- LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s,
- const struct kernel_msghdr *msg,
- int flags) {
- return (ssize_t)LSS_NAME(socketcall)(16, s, msg, flags);
- }
- LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len,
- int flags,
- const struct kernel_sockaddr *to,
- unsigned int tolen) {
- return (ssize_t)LSS_NAME(socketcall)(11, s, buf, len, flags, to, tolen);
- }
- LSS_INLINE int LSS_NAME(shutdown)(int s, int how) {
- return LSS_NAME(socketcall)(13, s, how);
- }
- LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) {
- return LSS_NAME(socketcall)(1, domain, type, protocol);
- }
-
- LSS_INLINE int LSS_NAME(socketpair)(int d, int type, int protocol,
- int sv[2]) {
- return LSS_NAME(socketcall)(8, d, type, protocol, sv);
- }
- #endif
- #if defined(__i386__) || defined(__PPC__)
- LSS_INLINE _syscall4(int, fstatat64, int, d,
- const char *, p,
- struct kernel_stat64 *, b, int, f)
- #endif
- #if defined(__i386__) || defined(__PPC__) || \
- (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
- LSS_INLINE _syscall3(pid_t, waitpid, pid_t, p,
- int*, s, int, o)
- #endif
- #if defined(__mips__)
- /* sys_pipe() on MIPS has non-standard calling conventions, as it returns
- * both file handles through CPU registers.
- */
- LSS_INLINE int LSS_NAME(pipe)(int *p) {
- register unsigned long __v0 __asm__("$2") = __NR_pipe;
- register unsigned long __v1 __asm__("$3");
- register unsigned long __r7 __asm__("$7");
- __asm__ __volatile__ ("syscall\n"
- : "=&r"(__v0), "=&r"(__v1), "+r" (__r7)
- : "0"(__v0)
- : "$8", "$9", "$10", "$11", "$12",
- "$13", "$14", "$15", "$24", "memory");
- if (__r7) {
- LSS_ERRNO = __v0;
- return -1;
- } else {
- p[0] = __v0;
- p[1] = __v1;
- return 0;
- }
- }
- #else
- LSS_INLINE _syscall1(int, pipe, int *, p)
- #endif
- /* TODO(csilvers): see if ppc can/should support this as well */
- #if defined(__i386__) || defined(__ARM_ARCH_3__) || \
- defined(__ARM_EABI__) || \
- (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64)
- #define __NR__statfs64 __NR_statfs64
- #define __NR__fstatfs64 __NR_fstatfs64
- LSS_INLINE _syscall3(int, _statfs64, const char*, p,
- size_t, s,struct kernel_statfs64*, b)
- LSS_INLINE _syscall3(int, _fstatfs64, int, f,
- size_t, s,struct kernel_statfs64*, b)
- LSS_INLINE int LSS_NAME(statfs64)(const char *p,
- struct kernel_statfs64 *b) {
- return LSS_NAME(_statfs64)(p, sizeof(*b), b);
- }
- LSS_INLINE int LSS_NAME(fstatfs64)(int f,struct kernel_statfs64 *b) {
- return LSS_NAME(_fstatfs64)(f, sizeof(*b), b);
- }
- #endif
-
- LSS_INLINE int LSS_NAME(execv)(const char *path, const char *const argv[]) {
- extern char **environ;
- return LSS_NAME(execve)(path, argv, (const char *const *)environ);
- }
-
- LSS_INLINE pid_t LSS_NAME(gettid)() {
- pid_t tid = LSS_NAME(_gettid)();
- if (tid != -1) {
- return tid;
- }
- return LSS_NAME(getpid)();
- }
-
- LSS_INLINE void *LSS_NAME(mremap)(void *old_address, size_t old_size,
- size_t new_size, int flags, ...) {
- va_list ap;
- void *new_address, *rc;
- va_start(ap, flags);
- new_address = va_arg(ap, void *);
- rc = LSS_NAME(_mremap)(old_address, old_size, new_size,
- flags, new_address);
- va_end(ap);
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(ptrace_detach)(pid_t pid) {
- /* PTRACE_DETACH can sometimes forget to wake up the tracee and it
- * then sends job control signals to the real parent, rather than to
- * the tracer. We reduce the risk of this happening by starting a
- * whole new time slice, and then quickly sending a SIGCONT signal
- * right after detaching from the tracee.
- */
- int rc, err;
- LSS_NAME(sched_yield)();
- rc = LSS_NAME(ptrace)(PTRACE_DETACH, pid, (void *)0, (void *)0);
- err = LSS_ERRNO;
- LSS_NAME(kill)(pid, SIGCONT);
- LSS_ERRNO = err;
- return rc;
- }
-
- LSS_INLINE int LSS_NAME(raise)(int sig) {
- return LSS_NAME(kill)(LSS_NAME(getpid)(), sig);
- }
-
- LSS_INLINE int LSS_NAME(setpgrp)() {
- return LSS_NAME(setpgid)(0, 0);
- }
-
- LSS_INLINE int LSS_NAME(sysconf)(int name) {
- extern int __getpagesize(void);
- switch (name) {
- case _SC_OPEN_MAX: {
- struct kernel_rlimit limit;
-#if defined(__ARM_EABI__)
- return LSS_NAME(ugetrlimit)(RLIMIT_NOFILE, &limit) < 0
- ? 8192 : limit.rlim_cur;
-#else
- return LSS_NAME(getrlimit)(RLIMIT_NOFILE, &limit) < 0
- ? 8192 : limit.rlim_cur;
-#endif
- }
- case _SC_PAGESIZE:
- return __getpagesize();
- default:
- errno = ENOSYS;
- return -1;
- }
- }
- #if defined(__x86_64__) || \
- (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI64)
- /* pread64() and pwrite64() do not exist on 64-bit systems... */
- LSS_INLINE _syscall3(int, readahead, int, f,
- loff_t, o, unsigned, c)
- #else
- #define __NR__pread64 __NR_pread64
- #define __NR__pwrite64 __NR_pwrite64
- #define __NR__readahead __NR_readahead
- LSS_INLINE _syscall5(ssize_t, _pread64, int, f,
- void *, b, size_t, c, unsigned, o1,
- unsigned, o2)
- LSS_INLINE _syscall5(ssize_t, _pwrite64, int, f,
- const void *, b, size_t, c, unsigned, o1,
- long, o2)
- LSS_INLINE _syscall4(int, _readahead, int, f,
- unsigned, o1, unsigned, o2, size_t, c)
- /* We force 64bit-wide parameters onto the stack, then access each
- * 32-bit component individually. This guarantees that we build the
- * correct parameters independent of the native byte-order of the
- * underlying architecture.
- */
- LSS_INLINE ssize_t LSS_NAME(pread64)(int fd, void *buf, size_t count,
- loff_t off) {
- union { loff_t off; unsigned arg[2]; } o = { off };
- return LSS_NAME(_pread64)(fd, buf, count, o.arg[0], o.arg[1]);
- }
- LSS_INLINE ssize_t LSS_NAME(pwrite64)(int fd, const void *buf,
- size_t count, loff_t off) {
- union { loff_t off; unsigned arg[2]; } o = { off };
- return LSS_NAME(_pwrite64)(fd, buf, count, o.arg[0], o.arg[1]);
- }
- LSS_INLINE int LSS_NAME(readahead)(int fd, loff_t off, int len) {
- union { loff_t off; unsigned arg[2]; } o = { off };
- return LSS_NAME(_readahead)(fd, o.arg[0], o.arg[1], len);
- }
- #endif
-#endif
-
-#if defined(__cplusplus) && !defined(SYS_CPLUSPLUS)
-}
-#endif
-
-#endif
-#endif
diff --git a/src/common/linux/memory.h b/src/common/linux/memory.h
index 725ed8b3..868c9cc0 100644
--- a/src/common/linux/memory.h
+++ b/src/common/linux/memory.h
@@ -35,7 +35,7 @@
#include <unistd.h>
#include <sys/mman.h>
-#include "common/linux/linux_syscall_support.h"
+#include "third_party/lss/linux_syscall_support.h"
namespace google_breakpad {
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-18 12:43:58 +0000