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Posted to commits@quickstep.apache.org by ji...@apache.org on 2017/01/29 21:23:06 UTC
[08/55] [partial] incubator-quickstep git commit: Make the third
party directory leaner.
http://git-wip-us.apache.org/repos/asf/incubator-quickstep/blob/9661f956/third_party/gperftools/src/base/linux_syscall_support.h
----------------------------------------------------------------------
diff --git a/third_party/gperftools/src/base/linux_syscall_support.h b/third_party/gperftools/src/base/linux_syscall_support.h
deleted file mode 100644
index 9b6c35d..0000000
--- a/third_party/gperftools/src/base/linux_syscall_support.h
+++ /dev/null
@@ -1,2483 +0,0 @@
-// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
-/* 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.
- *
- * NOTE: This is a stripped down version of the official opensource
- * version of linux_syscall_support.h, which lives at
- * http://code.google.com/p/linux-syscall-support/
- * It includes only the syscalls that are used in perftools, plus a
- * few extra. Here's the breakdown:
- * 1) Perftools uses these: grep -rho 'sys_[a-z0-9_A-Z]* *(' src | sort -u
- * sys__exit(
- * sys_clone(
- * sys_close(
- * sys_fcntl(
- * sys_fstat(
- * sys_futex(
- * sys_futex1(
- * sys_getcpu(
- * sys_getdents64(
- * sys_getppid(
- * sys_gettid(
- * sys_lseek(
- * sys_mmap(
- * sys_mremap(
- * sys_munmap(
- * sys_open(
- * sys_pipe(
- * sys_prctl(
- * sys_ptrace(
- * sys_ptrace_detach(
- * sys_read(
- * sys_sched_yield(
- * sys_sigaction(
- * sys_sigaltstack(
- * sys_sigdelset(
- * sys_sigfillset(
- * sys_sigprocmask(
- * sys_socket(
- * sys_stat(
- * sys_waitpid(
- * 2) These are used as subroutines of the above:
- * sys_getpid -- gettid
- * sys_kill -- ptrace_detach
- * sys_restore -- sigaction
- * sys_restore_rt -- sigaction
- * sys_socketcall -- socket
- * sys_wait4 -- waitpid
- * 3) I left these in even though they're not used. They either
- * complement the above (write vs read) or are variants (rt_sigaction):
- * sys_fstat64
- * sys_llseek
- * sys_mmap2
- * sys_openat
- * sys_getdents
- * sys_rt_sigaction
- * sys_rt_sigprocmask
- * sys_sigaddset
- * sys_sigemptyset
- * sys_stat64
- * sys_write
- */
-#ifndef SYS_LINUX_SYSCALL_SUPPORT_H
-#define SYS_LINUX_SYSCALL_SUPPORT_H
-
-/* We currently only support x86-32, x86-64, ARM, MIPS, PPC/PPC64 and Aarch64 on Linux.
- * Porting to other related platforms should not be difficult.
- */
-#if (defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
- defined(__mips__) || defined(__PPC__) || defined(__aarch64__)) && 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 <stddef.h>
-#include <stdint.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/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;
-};
-
-#if defined(__i386__) || defined(__arm__) || defined(__PPC__)
-
-/* include/asm-{arm,i386,mips,ppc}/signal.h */
-struct kernel_old_sigaction {
- union {
- void (*sa_handler_)(int);
- void (*sa_sigaction_)(int, siginfo_t *, 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,generic,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, siginfo_t *, void *);
- };
- struct kernel_sigset_t sa_mask;
-#else
- union {
- void (*sa_handler_)(int);
- void (*sa_sigaction_)(int, siginfo_t *, void *);
- };
- unsigned long sa_flags;
- void (*sa_restorer)(void);
- struct kernel_sigset_t sa_mask;
-#endif
-};
-
-/* 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_nlink;
- unsigned st_mode;
- unsigned st_uid;
- unsigned st_gid;
- int __pad2;
- unsigned long long st_rdev;
- long long st_size;
- long long st_blksize;
- long long st_blocks;
- kernel_timespec st_atim;
- kernel_timespec st_mtim;
- kernel_timespec st_ctim;
- unsigned long __unused4;
- unsigned long __unused5;
- unsigned long __unused6;
-};
-#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,generic,i386,mips,x86_64,ppc}/stat.h */
-#if defined(__i386__) || defined(__arm__)
-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 {
- uint64_t st_dev;
- uint64_t st_ino;
- uint64_t st_nlink;
- unsigned st_mode;
- unsigned st_uid;
- unsigned st_gid;
- unsigned __pad0;
- uint64_t st_rdev;
- int64_t st_size;
- int64_t st_blksize;
- int64_t st_blocks;
- uint64_t st_atime_;
- uint64_t st_atime_nsec_;
- uint64_t st_mtime_;
- uint64_t st_mtime_nsec_;
- uint64_t st_ctime_;
- uint64_t st_ctime_nsec_;
- int64_t __unused[3];
-};
-#elif defined(__PPC__)
-struct kernel_stat {
- unsigned long long st_dev;
- unsigned long st_ino;
- unsigned long st_nlink;
- unsigned long st_mode;
- unsigned st_uid;
- unsigned st_gid;
- int __pad2;
- unsigned long long st_rdev;
- long st_size;
- unsigned long st_blksize;
- unsigned long st_blocks;
- kernel_timespec st_atim;
- kernel_timespec st_mtim;
- kernel_timespec st_ctim;
- unsigned long __unused4;
- unsigned long __unused5;
- unsigned long __unused6;
-};
-#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];
-};
-#elif defined(__aarch64__)
-struct kernel_stat {
- unsigned long st_dev;
- unsigned long st_ino;
- unsigned int st_mode;
- unsigned int st_nlink;
- unsigned int st_uid;
- unsigned int st_gid;
- unsigned long st_rdev;
- unsigned long __pad1;
- long st_size;
- int st_blksize;
- int __pad2;
- 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 int __unused4;
- unsigned int __unused5;
-};
-#endif
-
-
-/* Definitions missing from the standard header files */
-#ifndef O_DIRECTORY
-#if defined(__arm__)
-#define O_DIRECTORY 0040000
-#else
-#define O_DIRECTORY 0200000
-#endif
-#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_rt_sigaction
-#define __NR_rt_sigaction 174
-#define __NR_rt_sigprocmask 175
-#endif
-#ifndef __NR_stat64
-#define __NR_stat64 195
-#endif
-#ifndef __NR_fstat64
-#define __NR_fstat64 197
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 220
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid 224
-#endif
-#ifndef __NR_futex
-#define __NR_futex 240
-#endif
-#ifndef __NR_openat
-#define __NR_openat 295
-#endif
-#ifndef __NR_getcpu
-#define __NR_getcpu 318
-#endif
-/* End of i386 definitions */
-#elif defined(__arm__)
-#ifndef __syscall
-#if defined(__thumb__) || defined(__ARM_EABI__)
-#define __SYS_REG(name) register long __sysreg __asm__("r6") = __NR_##name;
-#define __SYS_REG_LIST(regs...) [sysreg] "r" (__sysreg) , ##regs
-#define __syscall(name) "swi\t0"
-#define __syscall_safe(name) \
- "push {r7}\n" \
- "mov r7,%[sysreg]\n" \
- __syscall(name)"\n" \
- "pop {r7}"
-#else
-#define __SYS_REG(name)
-#define __SYS_REG_LIST(regs...) regs
-#define __syscall(name) "swi\t" __sys1(__NR_##name) ""
-#define __syscall_safe(name) __syscall(name)
-#endif
-#endif
-#ifndef __NR_rt_sigaction
-#define __NR_rt_sigaction (__NR_SYSCALL_BASE + 174)
-#define __NR_rt_sigprocmask (__NR_SYSCALL_BASE + 175)
-#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_getdents64
-#define __NR_getdents64 (__NR_SYSCALL_BASE + 217)
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid (__NR_SYSCALL_BASE + 224)
-#endif
-#ifndef __NR_futex
-#define __NR_futex (__NR_SYSCALL_BASE + 240)
-#endif
-/* End of ARM definitions */
-#elif defined(__x86_64__)
-#ifndef __NR_gettid
-#define __NR_gettid 186
-#endif
-#ifndef __NR_futex
-#define __NR_futex 202
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 217
-#endif
-#ifndef __NR_openat
-#define __NR_openat 257
-#endif
-/* End of x86-64 definitions */
-#elif defined(__mips__)
-#if _MIPS_SIM == _MIPS_SIM_ABI32
-#ifndef __NR_rt_sigaction
-#define __NR_rt_sigaction (__NR_Linux + 194)
-#define __NR_rt_sigprocmask (__NR_Linux + 195)
-#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_futex
-#define __NR_futex (__NR_Linux + 238)
-#endif
-#ifndef __NR_openat
-#define __NR_openat (__NR_Linux + 288)
-#endif
-#ifndef __NR_fstatat
-#define __NR_fstatat (__NR_Linux + 293)
-#endif
-#ifndef __NR_getcpu
-#define __NR_getcpu (__NR_Linux + 312)
-#endif
-/* End of MIPS (old 32bit API) definitions */
-#elif _MIPS_SIM == _MIPS_SIM_ABI64
-#ifndef __NR_gettid
-#define __NR_gettid (__NR_Linux + 178)
-#endif
-#ifndef __NR_futex
-#define __NR_futex (__NR_Linux + 194)
-#endif
-#ifndef __NR_openat
-#define __NR_openat (__NR_Linux + 247)
-#endif
-#ifndef __NR_fstatat
-#define __NR_fstatat (__NR_Linux + 252)
-#endif
-#ifndef __NR_getcpu
-#define __NR_getcpu (__NR_Linux + 271)
-#endif
-/* End of MIPS (64bit API) definitions */
-#else
-#ifndef __NR_gettid
-#define __NR_gettid (__NR_Linux + 178)
-#endif
-#ifndef __NR_futex
-#define __NR_futex (__NR_Linux + 194)
-#endif
-#ifndef __NR_openat
-#define __NR_openat (__NR_Linux + 251)
-#endif
-#ifndef __NR_fstatat
-#define __NR_fstatat (__NR_Linux + 256)
-#endif
-#ifndef __NR_getcpu
-#define __NR_getcpu (__NR_Linux + 275)
-#endif
-/* End of MIPS (new 32bit API) definitions */
-#endif
-/* End of MIPS definitions */
-#elif defined(__PPC__)
-#ifndef __NR_rt_sigaction
-#define __NR_rt_sigaction 173
-#define __NR_rt_sigprocmask 174
-#endif
-#ifndef __NR_stat64
-#define __NR_stat64 195
-#endif
-#ifndef __NR_fstat64
-#define __NR_fstat64 197
-#endif
-#ifndef __NR_socket
-#define __NR_socket 198
-#endif
-#ifndef __NR_getdents64
-#define __NR_getdents64 202
-#endif
-#ifndef __NR_gettid
-#define __NR_gettid 207
-#endif
-#ifndef __NR_futex
-#define __NR_futex 221
-#endif
-#ifndef __NR_openat
-#define __NR_openat 286
-#endif
-#ifndef __NR_getcpu
-#define __NR_getcpu 302
-#endif
-/* End of powerpc defininitions */
-#elif defined(__aarch64__)
-#ifndef __NR_fstatat
-#define __NR_fstatat 79
-#endif
-/* End of aarch64 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__) || \
- defined(__aarch64__))
- /* 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__)
- #if defined(NO_FRAME_POINTER) && (100 * __GNUC__ + __GNUC_MINOR__ >= 404)
- /* This only works for GCC-4.4 and above -- the first version to use
- .cfi directives for dwarf unwind info. */
- #define CFI_ADJUST_CFA_OFFSET(adjust) \
- ".cfi_adjust_cfa_offset " #adjust "\n"
- #else
- #define CFI_ADJUST_CFA_OFFSET(adjust) /**/
- #endif
-
- /* 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" \
- CFI_ADJUST_CFA_OFFSET(4) \
- "movl %2,%%ebx\n" \
- "int $0x80\n" \
- "pop %%ebx\n" \
- CFI_ADJUST_CFA_OFFSET(-4) \
- args \
- : "esp", "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)) \
- : "esp", "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)) \
- : "esp", "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)
- : "esp", "memory", "ecx", "edx", "esi", "edi");
- LSS_RETURN(int, __res);
- }
-
- 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_ENTRYPOINT
- #define LSS_ENTRYPOINT "syscall\n"
-
- /* The x32 ABI has 32 bit longs, but the syscall interface is 64 bit.
- * We need to explicitly cast to an unsigned 64 bit type to avoid implicit
- * sign extension. We can't cast pointers directly because those are
- * 32 bits, and gcc will dump ugly warnings about casting from a pointer
- * to an integer of a different size.
- */
- #undef LSS_SYSCALL_ARG
- #define LSS_SYSCALL_ARG(a) ((uint64_t)(uintptr_t)(a))
- #undef _LSS_RETURN
- #define _LSS_RETURN(type, res, cast) \
- do { \
- if ((uint64_t)(res) >= (uint64_t)(-4095)) { \
- LSS_ERRNO = -(res); \
- res = -1; \
- } \
- return (type)(cast)(res); \
- } while (0)
- #undef LSS_RETURN
- #define LSS_RETURN(type, res) _LSS_RETURN(type, res, uintptr_t)
-
- #undef _LSS_BODY
- #define _LSS_BODY(nr, type, name, cast, ...) \
- long long __res; \
- __asm__ __volatile__(LSS_BODY_ASM##nr LSS_ENTRYPOINT \
- : "=a" (__res) \
- : "0" (__NR_##name) LSS_BODY_ARG##nr(__VA_ARGS__) \
- : LSS_BODY_CLOBBER##nr "r11", "rcx", "memory"); \
- _LSS_RETURN(type, __res, cast)
- #undef LSS_BODY
- #define LSS_BODY(nr, type, name, args...) \
- _LSS_BODY(nr, type, name, uintptr_t, ## args)
-
- #undef LSS_BODY_ASM0
- #undef LSS_BODY_ASM1
- #undef LSS_BODY_ASM2
- #undef LSS_BODY_ASM3
- #undef LSS_BODY_ASM4
- #undef LSS_BODY_ASM5
- #undef LSS_BODY_ASM6
- #define LSS_BODY_ASM0
- #define LSS_BODY_ASM1 LSS_BODY_ASM0
- #define LSS_BODY_ASM2 LSS_BODY_ASM1
- #define LSS_BODY_ASM3 LSS_BODY_ASM2
- #define LSS_BODY_ASM4 LSS_BODY_ASM3 "movq %5,%%r10;"
- #define LSS_BODY_ASM5 LSS_BODY_ASM4 "movq %6,%%r8;"
- #define LSS_BODY_ASM6 LSS_BODY_ASM5 "movq %7,%%r9;"
-
- #undef LSS_BODY_CLOBBER0
- #undef LSS_BODY_CLOBBER1
- #undef LSS_BODY_CLOBBER2
- #undef LSS_BODY_CLOBBER3
- #undef LSS_BODY_CLOBBER4
- #undef LSS_BODY_CLOBBER5
- #undef LSS_BODY_CLOBBER6
- #define LSS_BODY_CLOBBER0
- #define LSS_BODY_CLOBBER1 LSS_BODY_CLOBBER0
- #define LSS_BODY_CLOBBER2 LSS_BODY_CLOBBER1
- #define LSS_BODY_CLOBBER3 LSS_BODY_CLOBBER2
- #define LSS_BODY_CLOBBER4 LSS_BODY_CLOBBER3 "r10",
- #define LSS_BODY_CLOBBER5 LSS_BODY_CLOBBER4 "r8",
- #define LSS_BODY_CLOBBER6 LSS_BODY_CLOBBER5 "r9",
-
- #undef LSS_BODY_ARG0
- #undef LSS_BODY_ARG1
- #undef LSS_BODY_ARG2
- #undef LSS_BODY_ARG3
- #undef LSS_BODY_ARG4
- #undef LSS_BODY_ARG5
- #undef LSS_BODY_ARG6
- #define LSS_BODY_ARG0()
- #define LSS_BODY_ARG1(arg1) \
- LSS_BODY_ARG0(), "D" (arg1)
- #define LSS_BODY_ARG2(arg1, arg2) \
- LSS_BODY_ARG1(arg1), "S" (arg2)
- #define LSS_BODY_ARG3(arg1, arg2, arg3) \
- LSS_BODY_ARG2(arg1, arg2), "d" (arg3)
- #define LSS_BODY_ARG4(arg1, arg2, arg3, arg4) \
- LSS_BODY_ARG3(arg1, arg2, arg3), "r" (arg4)
- #define LSS_BODY_ARG5(arg1, arg2, arg3, arg4, arg5) \
- LSS_BODY_ARG4(arg1, arg2, arg3, arg4), "r" (arg5)
- #define LSS_BODY_ARG6(arg1, arg2, arg3, arg4, arg5, arg6) \
- LSS_BODY_ARG5(arg1, arg2, arg3, arg4, arg5), "r" (arg6)
-
- #undef _syscall0
- #define _syscall0(type,name) \
- type LSS_NAME(name)() { \
- LSS_BODY(0, type, name); \
- }
- #undef _syscall1
- #define _syscall1(type,name,type1,arg1) \
- type LSS_NAME(name)(type1 arg1) { \
- LSS_BODY(1, type, name, LSS_SYSCALL_ARG(arg1)); \
- }
- #undef _syscall2
- #define _syscall2(type,name,type1,arg1,type2,arg2) \
- type LSS_NAME(name)(type1 arg1, type2 arg2) { \
- LSS_BODY(2, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(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, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
- LSS_SYSCALL_ARG(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, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
- LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(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, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
- LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4), \
- LSS_SYSCALL_ARG(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, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
- LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4), \
- LSS_SYSCALL_ARG(arg5), LSS_SYSCALL_ARG(arg6));\
- }
- 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 long __res;
- {
- __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"
-
- /* Set up alignment of the child stack:
- * child_stack = (child_stack & ~0xF) - 16;
- */
- "andq $-16,%5\n"
- "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"
- "movq %9,%%r8\n"
- "movq %10,%%r10\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"(LSS_SYSCALL_ARG(fn)),
- "S"(LSS_SYSCALL_ARG(child_stack)),
- "D"(LSS_SYSCALL_ARG(flags)),
- "r"(LSS_SYSCALL_ARG(arg)),
- "d"(LSS_SYSCALL_ARG(parent_tidptr)),
- "r"(LSS_SYSCALL_ARG(newtls)),
- "r"(LSS_SYSCALL_ARG(child_tidptr))
- : "rsp", "memory", "r8", "r10", "r11", "rcx");
- }
- LSS_RETURN(int, __res);
- }
-
- 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.
- */
- long long res;
- __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 (void (*)(void))(uintptr_t)res;
- }
- #elif defined(__arm__)
- /* 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
-
- /* r0..r3 are scratch registers and not preserved across function
- * calls. We need to first evaluate the first 4 syscall arguments
- * and store them on stack. They must be loaded into r0..r3 after
- * all function calls to avoid r0..r3 being clobbered.
- */
- #undef LSS_SAVE_ARG
- #define LSS_SAVE_ARG(r,a) long __tmp##r = (long)a
- #undef LSS_LOAD_ARG
- #define LSS_LOAD_ARG(r) register long __r##r __asm__("r"#r) = __tmp##r
-
- #undef LSS_BODY
- #define LSS_BODY(type, name, args...) \
- register long __res_r0 __asm__("r0"); \
- long __res; \
- __SYS_REG(name) \
- __asm__ __volatile__ (__syscall_safe(name) \
- : "=r"(__res_r0) \
- : __SYS_REG_LIST(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) { \
- /* There is no need for using a volatile temp. */ \
- 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_SAVE_ARG(0, arg1); \
- LSS_SAVE_ARG(1, arg2); \
- LSS_LOAD_ARG(0); \
- LSS_LOAD_ARG(1); \
- 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_SAVE_ARG(0, arg1); \
- LSS_SAVE_ARG(1, arg2); \
- LSS_SAVE_ARG(2, arg3); \
- LSS_LOAD_ARG(0); \
- LSS_LOAD_ARG(1); \
- LSS_LOAD_ARG(2); \
- 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_SAVE_ARG(0, arg1); \
- LSS_SAVE_ARG(1, arg2); \
- LSS_SAVE_ARG(2, arg3); \
- LSS_SAVE_ARG(3, arg4); \
- LSS_LOAD_ARG(0); \
- LSS_LOAD_ARG(1); \
- LSS_LOAD_ARG(2); \
- LSS_LOAD_ARG(3); \
- 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_SAVE_ARG(0, arg1); \
- LSS_SAVE_ARG(1, arg2); \
- LSS_SAVE_ARG(2, arg3); \
- LSS_SAVE_ARG(3, arg4); \
- LSS_REG(4, arg5); \
- LSS_LOAD_ARG(0); \
- LSS_LOAD_ARG(1); \
- LSS_LOAD_ARG(2); \
- LSS_LOAD_ARG(3); \
- 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_SAVE_ARG(0, arg1); \
- LSS_SAVE_ARG(1, arg2); \
- LSS_SAVE_ARG(2, arg3); \
- LSS_SAVE_ARG(3, arg4); \
- LSS_REG(4, arg5); \
- LSS_REG(5, arg6); \
- LSS_LOAD_ARG(0); \
- LSS_LOAD_ARG(1); \
- LSS_LOAD_ARG(2); \
- LSS_LOAD_ARG(3); \
- 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) {
- register long __res __asm__("r5");
- {
- if (fn == NULL || child_stack == NULL) {
- __res = -EINVAL;
- goto clone_exit;
- }
-
- /* stash first 4 arguments on stack first because we can only load
- * them after all function calls.
- */
- int tmp_flags = flags;
- int * tmp_stack = (int*) child_stack;
- void * tmp_ptid = parent_tidptr;
- void * tmp_tls = newtls;
-
- register int *__ctid __asm__("r4") = child_tidptr;
-
- /* Push "arg" and "fn" onto the stack that will be
- * used by the child.
- */
- *(--tmp_stack) = (int) arg;
- *(--tmp_stack) = (int) fn;
-
- /* We must load r0..r3 last after all possible function calls. */
- register int __flags __asm__("r0") = tmp_flags;
- register void *__stack __asm__("r1") = tmp_stack;
- register void *__ptid __asm__("r2") = tmp_ptid;
- register void *__tls __asm__("r3") = tmp_tls;
-
- /* %r0 = syscall(%r0 = flags,
- * %r1 = child_stack,
- * %r2 = parent_tidptr,
- * %r3 = newtls,
- * %r4 = child_tidptr)
- */
- __SYS_REG(clone)
- __asm__ __volatile__(/* %r0 = syscall(%r0 = flags,
- * %r1 = child_stack,
- * %r2 = parent_tidptr,
- * %r3 = newtls,
- * %r4 = child_tidptr)
- */
- "push {r7}\n"
- "mov r7,%1\n"
- __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), which never returns. We only
- * need to set r7 for EABI syscall ABI but we do
- * this always to simplify code sharing between
- * old and new syscall ABIs.
- */
- "mov r7,%2\n"
- __syscall(exit)"\n"
-
- /* Pop r7 from the stack only in the parent.
- */
- "1: pop {r7}\n"
- : "=r" (__res)
- : "r"(__sysreg),
- "i"(__NR_exit), "r"(__stack), "r"(__flags),
- "r"(__ptid), "r"(__tls), "r"(__ctid)
- : "cc", "lr", "memory");
- }
- clone_exit:
- 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)
-
- #if _MIPS_SIM == _MIPS_SIM_ABI32
- // See http://sources.redhat.com/ml/libc-alpha/2004-10/msg00050.html
- // or http://www.linux-mips.org/archives/linux-mips/2004-10/msg00142.html
- #define MIPS_SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12",\
- "$13", "$14", "$15", "$24", "$25", "memory"
- #else
- #define MIPS_SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \
- "$14", "$15", "$24", "$25", "memory"
- #endif
-
- #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__ \
- : MIPS_SYSCALL_CLOBBERS); \
- 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) \
- : MIPS_SYSCALL_CLOBBERS); \
- 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) \
- : MIPS_SYSCALL_CLOBBERS); \
- 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 2.18 clone.S */
- 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;
- {
-#if defined(__PPC64__)
-
-/* Stack frame offsets. */
-#if _CALL_ELF != 2
-#define FRAME_MIN_SIZE 112
-#define FRAME_TOC_SAVE 40
-#else
-#define FRAME_MIN_SIZE 32
-#define FRAME_TOC_SAVE 24
-#endif
-
-
- register int (*__fn)(void *) __asm__ ("r3") = fn;
- register void *__cstack __asm__ ("r4") = child_stack;
- register int __flags __asm__ ("r5") = flags;
- register void * __arg __asm__ ("r6") = arg;
- register int * __ptidptr __asm__ ("r7") = parent_tidptr;
- register void * __newtls __asm__ ("r8") = newtls;
- register int * __ctidptr __asm__ ("r9") = child_tidptr;
- __asm__ __volatile__(
- /* check for fn == NULL
- * and child_stack == NULL
- */
- "cmpdi cr0, %6, 0\n\t"
- "cmpdi 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 */
- "clrrdi %7, %7, 4\n\t"
- "li 0, 0\n\t"
- "stdu 0, -%13(%7)\n\t"
-
- /* fn, arg, child_stack are saved acrVoss the syscall */
- "mr 28, %6\n\t"
- "mr 29, %7\n\t"
- "mr 27, %9\n\t"
-
- /* syscall
- r3 == flags
- r4 == child_stack
- r5 == parent_tidptr
- r6 == newtls
- r7 == child_tidptr */
- "mr 3, %8\n\t"
- "mr 5, %10\n\t"
- "mr 6, %11\n\t"
- "mr 7, %12\n\t"
- "li 0, %4\n\t"
- "sc\n\t"
-
- /* Test if syscall was successful */
- "cmpdi 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 */
- "std 2, %14(1)\n\t"
-#if _CALL_ELF != 2
- "ld 0, 0(28)\n\t"
- "ld 2, 8(28)\n\t"
- "mtctr 0\n\t"
-#else
- "mr 12, 28\n\t"
- "mtctr 12\n\t"
-#endif
- "mr 3, 27\n\t"
- "bctrl\n\t"
- "ld 2, %14(1)\n\t"
-
- /* Call _exit(r3) */
- "li 0, %5\n\t"
- "sc\n\t"
-
- /* Return to parent */
- "1:\n\t"
- "mr %0, 3\n\t"
- : "=r" (__ret), "=r" (__err)
- : "0" (-1), "i" (EINVAL),
- "i" (__NR_clone), "i" (__NR_exit),
- "r" (__fn), "r" (__cstack), "r" (__flags),
- "r" (__arg), "r" (__ptidptr), "r" (__newtls),
- "r" (__ctidptr), "i" (FRAME_MIN_SIZE), "i" (FRAME_TOC_SAVE)
- : "cr0", "cr1", "memory", "ctr",
- "r0", "r29", "r27", "r28");
-#else
- 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");
-
-#endif
- }
- LSS_RETURN(int, __ret, __err);
- }
- #elif defined(__aarch64__)
- #undef LSS_REG
- #define LSS_REG(r,a) register long __x##r __asm__("x"#r) = (long)a
- #undef LSS_BODY
- #define LSS_BODY(type,name,args...) \
- register long __res_x0 __asm__("x0"); \
- long __res; \
- __asm__ __volatile__ ("mov x8, %1\n" \
- "svc 0x0\n" \
- : "=r"(__res_x0) \
- : "i"(__NR_##name) , ## args \
- : "memory"); \
- __res = __res_x0; \
- LSS_RETURN(type, __res)
- #undef _syscall0
- #define _syscall0(type, name) \
- type LSS_NAME(name)(void) { \
- LSS_BODY(type, name); \
-
<TRUNCATED>