Big fricking merge from trunk, but an easy one.

9 files changed, 95 insertions, 19 deletions

diff --git a/libc/sysdeps/linux/x86_64/bits/fcntl.h b/libc/sysdeps/linux/x86_64/bits/fcntl.h
index 712007c36..f69bcf60e 100644
--- a/libc/sysdeps/linux/x86_64/bits/fcntl.h
+++ b/libc/sysdeps/linux/x86_64/bits/fcntl.h
@@ -21,9 +21,12 @@
 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
 #endif
 
-
 #include <sys/types.h>
 #include <bits/wordsize.h>
+#ifdef __USE_GNU
+# include <bits/uio.h>
+#endif
+
 
 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
    located on an ext2 file system */
@@ -194,16 +197,45 @@ struct flock64
 # define POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
 #endif
 
-/* Linux-specific operations for posix_fadvise.  */
+
 #ifdef __USE_GNU
-# define LINUX_FADV_ASYNC_WRITE	32 /* Start writeout on range.  */
-# define LINUX_FADV_WRITE_WAIT	33 /* Wait upon writeout to range.  */
+# define SYNC_FILE_RANGE_WAIT_BEFORE	1 /* Wait upon writeout of all pages
+					     in the range before performing the
+					     write.  */
+# define SYNC_FILE_RANGE_WRITE		2 /* Initiate writeout of all those
+					     dirty pages in the range which are
+					     not presently under writeback.  */
+# define SYNC_FILE_RANGE_WAIT_AFTER	4 /* Wait upon writeout of all pages in
+					     the range after performing the
+					     write.  */
 #endif
 
 __BEGIN_DECLS
 
+#if 0 /*def __USE_GNU*/
+
 /* Provide kernel hint to read ahead.  */
 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
     __THROW;
 
+
+/* Selective file content synch'ing.  */
+extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
+			    unsigned int __flags);
+
+
+/* Splice address range into a pipe.  */
+extern int vmsplice (int __fdout, const struct iovec *__iov, size_t __count,
+		     unsigned int __flags);
+
+/* Splice two files together.  */
+extern int splice (int __fdin, int __fdout, size_t __len, unsigned int __flags)
+    __THROW;
+
+/* In-kernel implementation of tee for pipe buffers.  */
+extern int tee (int __fdin, int __fdout, size_t __len, unsigned int __flags)
+    __THROW;
+
+#endif
+
 __END_DECLS
diff --git a/libc/sysdeps/linux/x86_64/bits/mathdef.h b/libc/sysdeps/linux/x86_64/bits/mathdef.h
index 37665c209..b0567e4d4 100644
--- a/libc/sysdeps/linux/x86_64/bits/mathdef.h
+++ b/libc/sysdeps/linux/x86_64/bits/mathdef.h
@@ -23,14 +23,30 @@
 #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
 # define _MATH_H_MATHDEF	1
 
+# include <bits/wordsize.h>
+
+# if __WORDSIZE == 64 || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0)
 /* The x86-64 architecture computes values with the precission of the
-   used type.  */
+   used type.  Similarly for -m32 -mfpmath=sse.  */
 typedef float float_t;		/* `float' expressions are evaluated as `float'.  */
 typedef double double_t;	/* `double' expressions are evaluated
 				   as `double'.  */
+# else
+/* The ix87 FPUs evaluate all values in the 80 bit floating-point format
+   which is also available for the user as `long double'.  Therefore we
+   define:  */
+typedef long double float_t;	/* `float' expressions are evaluated as
+				   `long double'.  */
+typedef long double double_t;	/* `double' expressions are evaluated as
+				   `long double'.  */
+# endif
 
 /* The values returned by `ilogb' for 0 and NaN respectively.  */
 # define FP_ILOGB0	(-2147483647 - 1)
 # define FP_ILOGBNAN	(-2147483647 - 1)
 
 #endif	/* ISO C99 */
+
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
+# define __NO_LONG_DOUBLE_MATH	1
+#endif
diff --git a/libc/sysdeps/linux/x86_64/bits/mman.h b/libc/sysdeps/linux/x86_64/bits/mman.h
index 880390055..535c9edcf 100644
--- a/libc/sysdeps/linux/x86_64/bits/mman.h
+++ b/libc/sysdeps/linux/x86_64/bits/mman.h
@@ -89,7 +89,7 @@
 # define MADV_SEQUENTIAL 2	/* Expect sequential page references.  */
 # define MADV_WILLNEED	 3	/* Will need these pages.  */
 # define MADV_DONTNEED	 4	/* Don't need these pages.  */
-# define MADV_REMOVE	 5	/* Remove these pages and resources.  */
+# define MADV_REMOVE	 9	/* Remove these pages and resources.  */
 # define MADV_DONTFORK	 10	/* Do not inherit across fork.  */
 # define MADV_DOFORK	 11	/* Do inherit across fork.  */
 #endif
diff --git a/libc/sysdeps/linux/x86_64/bits/stat.h b/libc/sysdeps/linux/x86_64/bits/stat.h
index ddc292a34..3a9c7740a 100644
--- a/libc/sysdeps/linux/x86_64/bits/stat.h
+++ b/libc/sysdeps/linux/x86_64/bits/stat.h
@@ -78,12 +78,27 @@ struct stat
 #else
     __blkcnt64_t st_blocks;		/* Number 512-byte blocks allocated. */
 #endif
+#if 0 /*def __USE_MISC*/
+    /* Nanosecond resolution timestamps are stored in a format
+       equivalent to 'struct timespec'.  This is the type used
+       whenever possible but the Unix namespace rules do not allow the
+       identifier 'timespec' to appear in the <sys/stat.h> header.
+       Therefore we have to handle the use of this header in strictly
+       standard-compliant sources special.  */
+    struct timespec st_atim;		/* Time of last access.  */
+    struct timespec st_mtim;		/* Time of last modification.  */
+    struct timespec st_ctim;		/* Time of last status change.  */
+# define st_atime st_atim.tv_sec	/* Backward compatibility.  */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
     __time_t st_atime;			/* Time of last access.  */
     unsigned long int st_atimensec;	/* Nscecs of last access.  */
     __time_t st_mtime;			/* Time of last modification.  */
     unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
     __time_t st_ctime;			/* Time of last status change.  */
     unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+#endif
 #if __WORDSIZE == 64
     long int __unused[3];
 #else
@@ -124,12 +139,27 @@ struct stat64
 #endif
     __blksize_t st_blksize;	/* Optimal block size for I/O.  */
     __blkcnt64_t st_blocks;	/* Nr. 512-byte blocks allocated.  */
+#if 0 /*def __USE_MISC*/
+    /* Nanosecond resolution timestamps are stored in a format
+       equivalent to 'struct timespec'.  This is the type used
+       whenever possible but the Unix namespace rules do not allow the
+       identifier 'timespec' to appear in the <sys/stat.h> header.
+       Therefore we have to handle the use of this header in strictly
+       standard-compliant sources special.  */
+    struct timespec st_atim;		/* Time of last access.  */
+    struct timespec st_mtim;		/* Time of last modification.  */
+    struct timespec st_ctim;		/* Time of last status change.  */
+# define st_atime st_atim.tv_sec	/* Backward compatibility.  */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
     __time_t st_atime;			/* Time of last access.  */
     unsigned long int st_atimensec;	/* Nscecs of last access.  */
     __time_t st_mtime;			/* Time of last modification.  */
     unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
     __time_t st_ctime;			/* Time of last status change.  */
     unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+#endif
 #if __WORDSIZE == 64
     long int __unused[3];
 #else
diff --git a/libc/sysdeps/linux/x86_64/bits/syscalls.h b/libc/sysdeps/linux/x86_64/bits/syscalls.h
index d44f637ac..afd97c0b0 100644
--- a/libc/sysdeps/linux/x86_64/bits/syscalls.h
+++ b/libc/sysdeps/linux/x86_64/bits/syscalls.h
@@ -9,10 +9,6 @@
  * programs.  */
 #include <bits/sysnum.h>
 
-#ifndef __set_errno
-# define __set_errno(val) (*__errno_location ()) = (val)
-#endif
-
 /*
    Some of the sneaky macros in the code were taken from 
    glibc-2.2.5/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -20,6 +16,10 @@
 
 #ifndef __ASSEMBLER__
 
+#include <errno.h>
+
+#define SYS_ify(syscall_name)  (__NR_##syscall_name)
+
 #undef _syscall0
 #define _syscall0(type,name) \
 type name(void) \
diff --git a/libc/sysdeps/linux/x86_64/brk.c b/libc/sysdeps/linux/x86_64/brk.c
index 09d911066..22f006d7e 100644
--- a/libc/sysdeps/linux/x86_64/brk.c
+++ b/libc/sysdeps/linux/x86_64/brk.c
@@ -21,11 +21,10 @@
 #include <unistd.h>
 #include <sys/syscall.h>
 
-libc_hidden_proto(brk)
-
 /* This must be initialized data because commons can't have aliases.  */
-void *__curbrk = 0;
+void *__curbrk attribute_hidden = 0;
 
+libc_hidden_proto(brk)
 int brk (void *addr)
 {
 	void *__unbounded newbrk;
diff --git a/libc/sysdeps/linux/x86_64/bsd-_setjmp.S b/libc/sysdeps/linux/x86_64/bsd-_setjmp.S
index 91c587988..d5f9ae1b8 100644
--- a/libc/sysdeps/linux/x86_64/bsd-_setjmp.S
+++ b/libc/sysdeps/linux/x86_64/bsd-_setjmp.S
@@ -21,10 +21,6 @@
    We cannot do it in C because it must be a tail-call, so frame-unwinding
    in setjmp doesn't clobber the state restored by longjmp.  */
 
-#define _ASM
-#define _SETJMP_H
-#include <bits/setjmp.h>
-
 .global _setjmp
 .type   _setjmp,%function
 .align  16
diff --git a/libc/sysdeps/linux/x86_64/clone.S b/libc/sysdeps/linux/x86_64/clone.S
index 2dc9a502c..b93c2d9a4 100644
--- a/libc/sysdeps/linux/x86_64/clone.S
+++ b/libc/sysdeps/linux/x86_64/clone.S
@@ -23,8 +23,9 @@
 #define _ERRNO_H 1
 #include <bits/errno.h>
 #include <sys/syscall.h>
-#define _SCHED_H
-#include <bits/sched.h>
+
+#define CLONE_VM	0x00000100
+#define CLONE_THREAD	0x00010000
 
 /* The userland implementation is:
    int clone (int (*fn)(void *arg), void *child_stack, int flags, void *arg),
diff --git a/libc/sysdeps/linux/x86_64/fpu_control.h b/libc/sysdeps/linux/x86_64/fpu_control.h
index 3eae48e0d..6e9b3b362 100644
--- a/libc/sysdeps/linux/x86_64/fpu_control.h
+++ b/libc/sysdeps/linux/x86_64/fpu_control.h
@@ -95,7 +95,9 @@ typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
 #define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
 #define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
 
+#if 0
 /* Default control word set at startup.  */
 extern fpu_control_t __fpu_control;
+#endif
 
 #endif	/* fpu_control.h */