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-rw-r--r--libc/sysdeps/linux/common/Makefile.in21
-rw-r--r--libc/sysdeps/linux/common/__rt_sigwaitinfo.c103
-rw-r--r--libc/sysdeps/linux/common/_exit.c10
-rw-r--r--libc/sysdeps/linux/common/bits/kernel-features.h387
4 files changed, 506 insertions, 15 deletions
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index ec889ca0d..535a57369 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -33,6 +33,15 @@ CSRC := $(filter-out capget.c capset.c inotify.c ioperm.c iopl.c madvise.c \
splice.c vmsplice.c tee.c signalfd.c swapoff.c swapon.c \
sync_file_range.c sysctl.c sysinfo.c timerfd.c uselib.c vhangup.c,$(CSRC))
endif
+
+ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
+CSRC := $(filter-out fork.c getpid.c raise.c open.c close.c read.c write.c, $(CSRC))
+ifneq ($(TARGET_ARCH),arm)
+CSRC := $(filter-out waitpid.c, $(CSRC))
+else
+CSRC := $(filter-out vfork.c, $(CSRC))
+endif
+endif
ifneq ($(UCLIBC_BSD_SPECIFIC),y)
# we need these internally: getdomainname.c
@@ -75,6 +84,18 @@ ifneq ($(UCLIBC_SV4_DEPRECATED),y)
CSRC := $(filter-out ustat.c,$(CSRC))
endif
+ifeq ($(TARGET_ARCH),sh)
+CSRC := $(filter-out longjmp.c vfork.c,$(CSRC))
+endif
+
+ifeq ($(TARGET_ARCH),sparc)
+CSRC := $(filter-out vfork.c,$(CSRC))
+endif
+
+ifeq ($(TARGET_ARCH),i386)
+CSRC := $(filter-out vfork.c,$(CSRC))
+endif
+
# fails for some reason
ifneq ($(strip $(ARCH_OBJS)),)
CSRC := $(filter-out $(notdir $(ARCH_OBJS:.o=.c)) $(ARCH_OBJ_FILTEROUT),$(CSRC))
diff --git a/libc/sysdeps/linux/common/__rt_sigwaitinfo.c b/libc/sysdeps/linux/common/__rt_sigwaitinfo.c
new file mode 100644
index 000000000..1adc0fd73
--- /dev/null
+++ b/libc/sysdeps/linux/common/__rt_sigwaitinfo.c
@@ -0,0 +1,103 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * __rt_sigwaitinfo() for uClibc
+ *
+ * Copyright (C) 2006 by Steven Hill <sjhill@realitydiluted.com>
+ * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * GNU Library General Public License (LGPL) version 2 or later.
+ */
+
+#include <sys/syscall.h>
+#include <signal.h>
+#include <string.h>
+
+libc_hidden_proto(memcpy)
+
+#ifdef __NR_rt_sigtimedwait
+
+#include <string.h>
+
+# ifdef __UCLIBC_HAS_THREADS_NATIVE__
+# include <sysdep-cancel.h>
+
+static int do_sigwaitinfo(const sigset_t *set, siginfo_t *info)
+{
+# ifdef SIGCANCEL
+ sigset_t tmpset;
+
+ if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+ || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+ ))
+ {
+ /* Create a temporary mask without the bit for SIGCANCEL set. */
+ // We are not copying more than we have to.
+ memcpy (&tmpset, set, _NSIG / 8);
+ __sigdelset (&tmpset, SIGCANCEL);
+# ifdef SIGSETXID
+ __sigdelset (&tmpset, SIGSETXID);
+# endif
+ set = &tmpset;
+ }
+# endif
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+ int result = INLINE_SYSCALL (rt_sigtimedwait, 4, set, info,
+ NULL, _NSIG / 8);
+
+ /* The kernel generates a SI_TKILL code in si_code in case tkill is
+ used. tkill is transparently used in raise(). Since having
+ SI_TKILL as a code is useful in general we fold the results
+ here. */
+ if (result != -1 && info != NULL && info->si_code == SI_TKILL)
+ info->si_code = SI_USER;
+
+ return result;
+}
+
+/* Return any pending signal or wait for one for the given time. */
+int __sigwaitinfo(const sigset_t *set, siginfo_t *info)
+{
+ if(SINGLE_THREAD_P)
+ return do_sigwaitinfo(set, info);
+
+ int oldtype = LIBC_CANCEL_ASYNC();
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+ int result = do_sigwaitinfo(set, info);
+
+ LIBC_CANCEL_RESET(oldtype);
+
+ return result;
+}
+# else
+# define __need_NULL
+# include <stddef.h>
+# define __NR___rt_sigwaitinfo __NR_rt_sigtimedwait
+static _syscall4(int, __rt_sigwaitinfo, const sigset_t *, set,
+ siginfo_t *, info, const struct timespec *, timeout,
+ size_t, setsize);
+
+int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info)
+{
+ return __rt_sigwaitinfo(set, info, NULL, _NSIG / 8);
+}
+# endif
+#else
+int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info)
+{
+ if (set == NULL)
+ __set_errno(EINVAL);
+ else
+ __set_errno(ENOSYS);
+ return -1;
+}
+#endif
+libc_hidden_proto(sigwaitinfo)
+weak_alias (__sigwaitinfo, sigwaitinfo)
+libc_hidden_weak(sigwaitinfo)
+
diff --git a/libc/sysdeps/linux/common/_exit.c b/libc/sysdeps/linux/common/_exit.c
index fbeed0d8a..a36927d0c 100644
--- a/libc/sysdeps/linux/common/_exit.c
+++ b/libc/sysdeps/linux/common/_exit.c
@@ -12,12 +12,22 @@
#include <unistd.h>
#include <sys/types.h>
#include <sys/syscall.h>
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+#include <sysdep.h>
+#endif
void attribute_noreturn _exit(int status)
{
/* The loop is added only to keep gcc happy. */
while(1)
+ {
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+# ifdef __NR_exit_group
+ INLINE_SYSCALL(exit_group, 1, status);
+# endif
+#endif
INLINE_SYSCALL(exit, 1, status);
+ }
}
libc_hidden_def(_exit)
diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h
index 88297349a..923341b35 100644
--- a/libc/sysdeps/linux/common/bits/kernel-features.h
+++ b/libc/sysdeps/linux/common/bits/kernel-features.h
@@ -26,23 +26,126 @@
#endif
#include <linux/version.h>
-#define __LINUX_KERNEL_VERSION LINUX_VERSION_CODE
+#define __LINUX_KERNEL_VERSION LINUX_VERSION_CODE
+
+/* We assume for __LINUX_KERNEL_VERSION the same encoding used in
+ linux/version.h. I.e., the major, minor, and subminor all get a
+ byte with the major number being in the highest byte. This means
+ we can do numeric comparisons.
+
+ In the following we will define certain symbols depending on
+ whether the describes kernel feature is available in the kernel
+ version given by __LINUX_KERNEL_VERSION. We are not always exactly
+ recording the correct versions in which the features were
+ introduced. If somebody cares these values can afterwards be
+ corrected. Most of the numbers here are set corresponding to
+ 2.2.0. */
+
+/* `getcwd' system call. */
+#if __LINUX_KERNEL_VERSION >= 131584
+# define __ASSUME_GETCWD_SYSCALL 1
+#endif
/* Real-time signal became usable in 2.1.70. */
#if __LINUX_KERNEL_VERSION >= 131398
# define __ASSUME_REALTIME_SIGNALS 1
#endif
-/* Beginning with 2.5.63 support for realtime and monotonic clocks and
- timers based on them is available. */
-#if __LINUX_KERNEL_VERSION >= 132415
-# define __ASSUME_POSIX_TIMERS 1
+/* When were the `pread'/`pwrite' syscalls introduced? */
+#if __LINUX_KERNEL_VERSION >= 131584
+# define __ASSUME_PREAD_SYSCALL 1
+# define __ASSUME_PWRITE_SYSCALL 1
#endif
-/* On x86, the set_thread_area syscall was introduced in 2.5.29, but its
- semantics was changed in 2.5.30, and again after 2.5.31. */
-#if __LINUX_KERNEL_VERSION >= 132384 && defined __i386__
-# define __ASSUME_SET_THREAD_AREA_SYSCALL 1
+/* When was `poll' introduced? */
+#if __LINUX_KERNEL_VERSION >= 131584
+# define __ASSUME_POLL_SYSCALL 1
+#endif
+
+/* The `lchown' syscall was introduced in 2.1.80. */
+#if __LINUX_KERNEL_VERSION >= 131408
+# define __ASSUME_LCHOWN_SYSCALL 1
+#endif
+
+/* When did the `setresuid' sysall became available? */
+#if __LINUX_KERNEL_VERSION >= 131584 && !defined __sparc__
+# define __ASSUME_SETRESUID_SYSCALL 1
+#endif
+
+/* The SIOCGIFNAME ioctl is available starting with 2.1.50. */
+#if __LINUX_KERNEL_VERSION >= 131408
+# define __ASSUME_SIOCGIFNAME 1
+#endif
+
+/* MSG_NOSIGNAL was at least available with Linux 2.2.0. */
+#if __LINUX_KERNEL_VERSION >= 131584
+# define __ASSUME_MSG_NOSIGNAL 1
+#endif
+
+/* On x86 another `getrlimit' syscall was added in 2.3.25. */
+#if __LINUX_KERNEL_VERSION >= 131865 && defined __i386__
+# define __ASSUME_NEW_GETRLIMIT_SYSCALL 1
+#endif
+
+/* On x86 the truncate64/ftruncate64 syscalls were introduced in 2.3.31. */
+#if __LINUX_KERNEL_VERSION >= 131871 && defined __i386__
+# define __ASSUME_TRUNCATE64_SYSCALL 1
+#endif
+
+/* On x86 the mmap2 syscall was introduced in 2.3.31. */
+#if __LINUX_KERNEL_VERSION >= 131871 && defined __i386__
+# define __ASSUME_MMAP2_SYSCALL 1
+#endif
+
+/* On x86 the stat64/lstat64/fstat64 syscalls were introduced in 2.3.34. */
+#if __LINUX_KERNEL_VERSION >= 131874 && defined __i386__
+# define __ASSUME_STAT64_SYSCALL 1
+#endif
+
+/* On sparc and ARM the truncate64/ftruncate64/mmap2/stat64/lstat64/fstat64
+ syscalls were introduced in 2.3.35. */
+#if __LINUX_KERNEL_VERSION >= 131875 && (defined __sparc__ || defined __arm__)
+# define __ASSUME_TRUNCATE64_SYSCALL 1
+# define __ASSUME_MMAP2_SYSCALL 1
+# define __ASSUME_STAT64_SYSCALL 1
+#endif
+
+/* I know for sure that getrlimit are in 2.3.35 on powerpc. */
+#if __LINUX_KERNEL_VERSION >= 131875 && defined __powerpc__
+# define __ASSUME_NEW_GETRLIMIT_SYSCALL 1
+#endif
+
+/* I know for sure that these are in 2.3.35 on powerpc. But PowerPC64 does not
+ support separate 64-bit syscalls, already 64-bit */
+#if __LINUX_KERNEL_VERSION >= 131875 && defined __powerpc__ \
+ && !defined __powerpc64__
+# define __ASSUME_TRUNCATE64_SYSCALL 1
+# define __ASSUME_STAT64_SYSCALL 1
+#endif
+
+/* Linux 2.3.39 introduced 32bit UID/GIDs. Some platforms had 32
+ bit type all along. */
+#if __LINUX_KERNEL_VERSION >= 131879 || defined __powerpc__ || defined __mips__
+# define __ASSUME_32BITUIDS 1
+#endif
+
+/* Linux 2.3.39 sparc added setresuid. */
+#if __LINUX_KERNEL_VERSION >= 131879 && defined __sparc__
+# define __ASSUME_SETRESUID_SYSCALL 1
+#endif
+
+#if __LINUX_KERNEL_VERSION >= 131879
+# define __ASSUME_SETRESGID_SYSCALL 1
+#endif
+
+/* Linux 2.3.39 introduced IPC64. Except for powerpc. */
+#if __LINUX_KERNEL_VERSION >= 131879 && !defined __powerpc__
+# define __ASSUME_IPC64 1
+#endif
+
+/* MIPS platforms had IPC64 all along. */
+#if defined __mips__
+# define __ASSUME_IPC64 1
#endif
/* We can use the LDTs for threading with Linux 2.3.99 and newer. */
@@ -50,6 +153,74 @@
# define __ASSUME_LDT_WORKS 1
#endif
+/* Linux 2.4.0 on PPC introduced a correct IPC64. But PowerPC64 does not
+ support a separate 64-bit sys call, already 64-bit */
+#if __LINUX_KERNEL_VERSION >= 132096 && defined __powerpc__ \
+ && !defined __powerpc64__
+# define __ASSUME_IPC64 1
+#endif
+
+/* SH kernels got stat64, mmap2, and truncate64 during 2.4.0-test. */
+#if __LINUX_KERNEL_VERSION >= 132096 && defined __sh__
+# define __ASSUME_TRUNCATE64_SYSCALL 1
+# define __ASSUME_MMAP2_SYSCALL 1
+# define __ASSUME_STAT64_SYSCALL 1
+#endif
+
+/* The changed st_ino field appeared in 2.4.0-test6. But we cannot
+ distinguish this version from other 2.4.0 releases. Therefore play
+ save and assume it available is for 2.4.1 and up. However, SH is lame,
+ and still does not have a 64-bit inode field. */
+#if __LINUX_KERNEL_VERSION >= 132097 && !defined __alpha__ && !defined __sh__
+# define __ASSUME_ST_INO_64_BIT 1
+#endif
+
+/* To support locking of large files a new fcntl() syscall was introduced
+ in 2.4.0-test7. We test for 2.4.1 for the earliest version we know
+ the syscall is available. */
+#if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __sparc__)
+# define __ASSUME_FCNTL64 1
+#endif
+
+/* The AT_CLKTCK auxiliary vector entry was introduction in the 2.4.0
+ series. */
+#if __LINUX_KERNEL_VERSION >= 132097
+# define __ASSUME_AT_CLKTCK 1
+#endif
+
+/* Arm got fcntl64 in 2.4.4, PowerPC and SH have it also in 2.4.4 (I
+ don't know when it got introduced). But PowerPC64 does not support
+ separate FCNTL64 call, FCNTL is already 64-bit */
+#if __LINUX_KERNEL_VERSION >= 132100 \
+ && (defined __arm__ || defined __powerpc__ || defined __sh__) \
+ && !defined __powerpc64__
+# define __ASSUME_FCNTL64 1
+#endif
+
+/* The getdents64 syscall was introduced in 2.4.0-test7. We test for
+ 2.4.1 for the earliest version we know the syscall is available. */
+#if __LINUX_KERNEL_VERSION >= 132097
+# define __ASSUME_GETDENTS64_SYSCALL 1
+#endif
+
+/* When did O_DIRECTORY became available? Early in 2.3 but when?
+ Be safe, use 2.3.99. */
+#if __LINUX_KERNEL_VERSION >= 131939
+# define __ASSUME_O_DIRECTORY 1
+#endif
+
+/* Starting with one of the 2.4.0 pre-releases the Linux kernel passes
+ up the page size information. */
+#if __LINUX_KERNEL_VERSION >= 132097
+# define __ASSUME_AT_PAGESIZE 1
+#endif
+
+/* Starting with at least 2.4.0 the kernel passes the uid/gid unconditionally
+ up to the child. */
+#if __LINUX_KERNEL_VERSION >= 132097
+# define __ASSUME_AT_XID 1
+#endif
+
/* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way
and the vfork syscall made it into the official kernel. */
#if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__
@@ -57,17 +228,72 @@
# define __ASSUME_VFORK_SYSCALL 1
#endif
+/* Starting with 2.4.5 kernels the mmap2 syscall made it into the official
+ kernel. But PowerPC64 does not support a separate MMAP2 call. */
+#if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__ \
+ && !defined __powerpc64__
+# define __ASSUME_MMAP2_SYSCALL 1
+#endif
+
+/* Starting with 2.4.21 PowerPC implements the new prctl syscall.
+ This allows applications to get/set the Floating Point Exception Mode. */
+#if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc__
+# define __ASSUME_NEW_PRCTL_SYSCALL 1
+#endif
+
+/* Starting with 2.4.21 the PowerPC32 clone syscall works as expected. */
+#if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc__ \
+ && !defined __powerpc64__
+# define __ASSUME_FIXED_CLONE_SYSCALL 1
+#endif
+
+/* Starting with 2.4.21 PowerPC64 implements the new rt_sigreturn syscall.
+ The new rt_sigreturn takes an ucontext pointer allowing rt_sigreturn
+ to be used in the set/swapcontext implementation. */
+#if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc64__
+# define __ASSUME_NEW_RT_SIGRETURN_SYSCALL 1
+#endif
+
+/* On x86, the set_thread_area syscall was introduced in 2.5.29, but its
+ semantics was changed in 2.5.30, and again after 2.5.31. */
+#if __LINUX_KERNEL_VERSION >= 132384 && defined __i386__
+# define __ASSUME_SET_THREAD_AREA_SYSCALL 1
+#endif
+
/* The vfork syscall on x86 and arm was definitely available in 2.4. */
#if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __arm__)
# define __ASSUME_VFORK_SYSCALL 1
#endif
-/* Starting with version 2.6.4-rc1 the getdents syscall returns d_type
- * information as well and in between 2.6.5 and 2.6.8 most compat wrappers
- * were fixed too. Except s390{,x} which was fixed in 2.6.11. */
-#if (__LINUX_KERNEL_VERSION >= 0x020608 && !defined __s390__) \
- || (__LINUX_KERNEL_VERSION >= 0x02060b && defined __s390__)
-# define __ASSUME_GETDENTS32_D_TYPE 1
+/* There are an infinite number of PA-RISC kernel versions numbered
+ 2.4.0. But they've not really been released as such. We require
+ and expect the final version here. */
+#ifdef __hppa__
+# define __ASSUME_32BITUIDS 1
+# define __ASSUME_TRUNCATE64_SYSCALL 1
+# define __ASSUME_MMAP2_SYSCALL 1
+# define __ASSUME_STAT64_SYSCALL 1
+# define __ASSUME_IPC64 1
+# define __ASSUME_ST_INO_64_BIT 1
+# define __ASSUME_FCNTL64 1
+# define __ASSUME_GETDENTS64_SYSCALL 1
+#endif
+
+/* Alpha switched to a 64-bit timeval sometime before 2.2.0. */
+#if __LINUX_KERNEL_VERSION >= 131584 && defined __alpha__
+# define __ASSUME_TIMEVAL64 1
+#endif
+
+#if defined __mips__ && _MIPS_SIM == _ABIN32
+# define __ASSUME_FCNTL64 1
+#endif
+
+/* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize
+ their availability with one define. The changes were made first
+ for i386 and the have to be done separately for the other archs.
+ For i386 we pick 2.5.50 as the first version with support. */
+#if __LINUX_KERNEL_VERSION >= 132402 && defined __i386__
+# define __ASSUME_CLONE_THREAD_FLAGS 1
#endif
/* Support for various CLOEXEC and NONBLOCK flags was added for x86,
@@ -87,6 +313,137 @@
# define __ASSUME_VFORK_SYSCALL 1
#endif
+/* Beginning with 2.5.63 support for realtime and monotonic clocks and
+ timers based on them is available. */
+#if __LINUX_KERNEL_VERSION >= 132415
+# define __ASSUME_POSIX_TIMERS 1
+#endif
+
+/* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize
+ their availability with one define. The changes were made first
+ for i386 and the have to be done separately for the other archs.
+ For ia64, s390*, PPC, x86-64 we pick 2.5.64 as the first version
+ with support. */
+#if __LINUX_KERNEL_VERSION >= 132416 \
+ && (defined __ia64__ || defined __s390__ || defined __powerpc__ \
+ || defined __x86_64__ || defined __sh__)
+# define __ASSUME_CLONE_THREAD_FLAGS 1
+#endif
+
+/* With kernel 2.4.17 we always have netlink support. */
+#if __LINUX_KERNEL_VERSION >= (132096+17)
+# define __ASSUME_NETLINK_SUPPORT 1
+#endif
+
+/* The requeue futex functionality was introduced in 2.5.70. */
+#if __LINUX_KERNEL_VERSION >= 132422
+# define __ASSUME_FUTEX_REQUEUE 1
+#endif
+
+/* The statfs64 syscalls are available in 2.5.74. */
+#if __LINUX_KERNEL_VERSION >= 132426
+# define __ASSUME_STATFS64 1
+#endif
+
+/* Starting with at least 2.5.74 the kernel passes the setuid-like exec
+ flag unconditionally up to the child. */
+#if __LINUX_KERNEL_VERSION >= 132426
+# define __ASSUME_AT_SECURE 1
+#endif
+
+/* Starting with the 2.5.75 kernel the kernel fills in the correct value
+ in the si_pid field passed as part of the siginfo_t struct to signal
+ handlers. */
+#if __LINUX_KERNEL_VERSION >= 132427
+# define __ASSUME_CORRECT_SI_PID 1
+#endif
+
+/* The tgkill syscall was instroduced for i386 in 2.5.75. For Alpha
+ it was introduced in 2.6.0-test1 which unfortunately cannot be
+ distinguished from 2.6.0. On x86-64, ppc, and ppc64 it was
+ introduced in 2.6.0-test3. */
+#if (__LINUX_KERNEL_VERSION >= 132427 && defined __i386__) \
+ || (__LINUX_KERNEL_VERSION >= 132609 && defined __alpha__) \
+ || (__LINUX_KERNEL_VERSION >= 132609 && defined __x86_64__) \
+ || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \
+ || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__)
+# define __ASSUME_TGKILL 1
+#endif
+
+/* The utimes syscall has been available for some architectures
+ forever. For x86 it was introduced after 2.5.75, for x86-64,
+ ppc, and ppc64 it was introduced in 2.6.0-test3. */
+#if defined __alpha__ || defined __ia64__ || defined __hppa__ \
+ || defined __sparc__ \
+ || (__LINUX_KERNEL_VERSION > 132427 && defined __i386__) \
+ || (__LINUX_KERNEL_VERSION > 132609 && defined __x86_64__) \
+ || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \
+ || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__)
+# define __ASSUME_UTIMES 1
+#endif
+
+// XXX Disabled for now since the semantics we want is not achieved.
+#if 0
+/* The CLONE_STOPPED flag was introduced in the 2.6.0-test1 series. */
+#if __LINUX_KERNEL_VERSION >= 132609
+# define __ASSUME_CLONE_STOPPED 1
+#endif
+#endif
+
+/* The fixed version of the posix_fadvise64 syscall appeared in
+ 2.6.0-test3. At least for x86. Powerpc support appeared in
+ 2.6.2, but for 32-bit userspace only. */
+#if (__LINUX_KERNEL_VERSION >= 132609 && defined __i386__) \
+ || (__LINUX_KERNEL_VERSION >= 132610 && defined __powerpc__ \
+ && !defined __powerpc64__)
+# define __ASSUME_FADVISE64_64_SYSCALL 1
+#endif
+
+/* The PROT_GROWSDOWN/PROT_GROWSUP flags were introduced in the 2.6.0-test
+ series. */
+#if __LINUX_KERNEL_VERSION >= 132609
+# define __ASSUME_PROT_GROWSUPDOWN 1
+#endif
+
+/* Starting with 2.6.0 PowerPC adds signal/swapcontext support for Vector
+ SIMD (AKA Altivec, VMX) instructions and register state. This changes
+ the overall size of the sigcontext and adds the swapcontext syscall. */
+#if __LINUX_KERNEL_VERSION >= 132608 && defined __powerpc__
+# define __ASSUME_SWAPCONTEXT_SYSCALL 1
+#endif
+
+/* The CLONE_DETACHED flag is not necessary in 2.6.2 kernels, it is
+ implied. */
+#if __LINUX_KERNEL_VERSION >= 132610
+# define __ASSUME_NO_CLONE_DETACHED 1
+#endif
+
+/* Starting with version 2.6.4-rc1 the getdents syscall returns d_type
+ information as well and in between 2.6.5 and 2.6.8 most compat wrappers
+ were fixed too. Except s390{,x} which was fixed in 2.6.11. */
+#if (__LINUX_KERNEL_VERSION >= 0x020608 && !defined __s390__) \
+ || (__LINUX_KERNEL_VERSION >= 0x02060b && defined __s390__)
+# define __ASSUME_GETDENTS32_D_TYPE 1
+#endif
+
+/* Starting with version 2.5.3, the initial location returned by `brk'
+ after exec is always rounded up to the next page. */
+#if __LINUX_KERNEL_VERSION >= 132355
+# define __ASSUME_BRK_PAGE_ROUNDED 1
+#endif
+
+/* Starting with version 2.6.9, the waitid system call is available.
+ Except for powerpc and powerpc64, where it is available in 2.6.12. */
+#if (__LINUX_KERNEL_VERSION >= 0x020609 && !defined __powerpc__) \
+ || (__LINUX_KERNEL_VERSION >= 0x02060c && defined __powerpc__)
+# define __ASSUME_WAITID_SYSCALL 1
+#endif
+
+/* Starting with version 2.6.9, SSI_IEEE_RAISE_EXCEPTION exists. */
+#if __LINUX_KERNEL_VERSION >= 0x020609 && defined __alpha__
+#define __ASSUME_IEEE_RAISE_EXCEPTION 1
+#endif
+
/* This header was added somewhere around 2.6.13 */
#if __LINUX_KERNEL_VERSION >= 132621
# define HAVE_LINUX_CPUMASK_H 1
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 07:03:01 +0000