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GNU C Library master sources branch master updated. glibc-2.16-ports-merge-232-g348363b
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 20 Aug 2012 14:37:47 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.16-ports-merge-232-g348363b
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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=348363b2c3ee93252a971ead851085739d8d04fb
commit 348363b2c3ee93252a971ead851085739d8d04fb
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Aug 20 14:37:27 2012 +0000
Remove __ASSUME_MMAP2_SYSCALL.
diff --git a/ChangeLog b/ChangeLog
index 60a7a6d..ab7a87d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,25 @@
+2012-08-20 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/kernel-features.h
+ (__ASSUME_MMAP2_SYSCALL): Remove all definitions.
+ * sysdeps/unix/sysv/linux/mmap64.c [__NR_mmap2]: Make code
+ unconditional.
+ [!__ASSUME_MMAP2_SYSCALL]: Remove conditional code.
+ * sysdeps/unix/sysv/linux/i386/mmap.S (__mmap)
+ [__ASSUME_MMAP2_SYSCALL]: Make code unconditional.
+ (__mmap) [!__ASSUME_MMAP2_SYSCALL]: Remove conditional code.
+ * sysdeps/unix/sysv/linux/i386/mmap64.S (__mmap64) [__NR_mmap2]:
+ Make code unconditional.
+ (__mmap64) [!__ASSUME_MMAP2_SYSCALL]: Remove conditional code.
+ (__mmap64) [!__NR_mmap2]: Likewise.
+ * sysdeps/unix/sysv/linux/s390/s390-32/mmap.S (__mmap)
+ [__ASSUME_MMAP2_SYSCALL]: Make code unconditional.
+ (__mmap) [!__ASSUME_MMAP2_SYSCALL]: Remove conditional code.
+ * sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S (__mmap64)
+ [__NR_mmap2]: Make code unconditional.
+ (__mmap64) [!__ASSUME_MMAP2_SYSCALL]: Remove conditional code.
+ (__mmap64) [!__NR_mmap2]: Likewise.
+
2012-08-20 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-32/getrlimit.c: Remove.
diff --git a/ports/ChangeLog.arm b/ports/ChangeLog.arm
index 359bd0d..4acc473 100644
--- a/ports/ChangeLog.arm
+++ b/ports/ChangeLog.arm
@@ -1,3 +1,8 @@
+2012-08-20 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/arm/kernel-features.h
+ (__ASSUME_MMAP2_SYSCALL): Remove.
+
2012-08-15 Maxim Kuvyrkov <maxim@codesourcery.com>
* sysdeps/arm/nptl/pthread_spin_lock.c: Use generic code.
diff --git a/ports/ChangeLog.hppa b/ports/ChangeLog.hppa
index a28fbce..97b6c57 100644
--- a/ports/ChangeLog.hppa
+++ b/ports/ChangeLog.hppa
@@ -1,3 +1,8 @@
+2012-08-20 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/hppa/kernel-features.h
+ (__ASSUME_MMAP2_SYSCALL): Remove.
+
2012-08-15 Maxim Kuvyrkov <maxim@codesourcery.com>
* sysdeps/hppa/nptl/pthread_spin_lock.c: Use generic code.
diff --git a/ports/ChangeLog.m68k b/ports/ChangeLog.m68k
index 62a8eb3..5cdbe37 100644
--- a/ports/ChangeLog.m68k
+++ b/ports/ChangeLog.m68k
@@ -1,3 +1,8 @@
+2012-08-20 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/m68k/kernel-features.h
+ (__ASSUME_MMAP2_SYSCALL): Remove.
+
2012-08-15 Maxim Kuvyrkov <maxim@codesourcery.com>
* sysdeps/m68k/nptl/pthread_spin_lock.c: Use generic code.
diff --git a/ports/ChangeLog.tile b/ports/ChangeLog.tile
index 53afc69..7e5cc6f 100644
--- a/ports/ChangeLog.tile
+++ b/ports/ChangeLog.tile
@@ -1,3 +1,8 @@
+2012-08-20 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/tile/kernel-features.h
+ (__ASSUME_MMAP2_SYSCALL): Remove.
+
2012-08-14 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/tile/kernel-features.h
diff --git a/ports/sysdeps/unix/sysv/linux/arm/kernel-features.h b/ports/sysdeps/unix/sysv/linux/arm/kernel-features.h
index b003b17..34ed474 100644
--- a/ports/sysdeps/unix/sysv/linux/arm/kernel-features.h
+++ b/ports/sysdeps/unix/sysv/linux/arm/kernel-features.h
@@ -20,9 +20,8 @@
/* The utimes syscall was added before 2.6.1. */
#define __ASSUME_UTIMES 1
-/* On ARM the mmap2/stat64/lstat64/fstat64 syscalls were introduced in
+/* On ARM the stat64/lstat64/fstat64 syscalls were introduced in
2.3.35. */
-#define __ASSUME_MMAP2_SYSCALL 1
#define __ASSUME_STAT64_SYSCALL 1
/* The signal frame layout changed in 2.6.18. */
diff --git a/ports/sysdeps/unix/sysv/linux/hppa/kernel-features.h b/ports/sysdeps/unix/sysv/linux/hppa/kernel-features.h
index 49ba55f..d5bec07 100644
--- a/ports/sysdeps/unix/sysv/linux/hppa/kernel-features.h
+++ b/ports/sysdeps/unix/sysv/linux/hppa/kernel-features.h
@@ -23,7 +23,6 @@
and expect the final version here. */
#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
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/kernel-features.h b/ports/sysdeps/unix/sysv/linux/m68k/kernel-features.h
index 4a8b585..701600e 100644
--- a/ports/sysdeps/unix/sysv/linux/m68k/kernel-features.h
+++ b/ports/sysdeps/unix/sysv/linux/m68k/kernel-features.h
@@ -18,7 +18,6 @@
<http://www.gnu.org/licenses/>. */
/* These features were surely available with 2.4.12. */
-#define __ASSUME_MMAP2_SYSCALL 1
#define __ASSUME_STAT64_SYSCALL 1
/* Many syscalls were added in 2.6.10 for m68k. */
diff --git a/ports/sysdeps/unix/sysv/linux/tile/kernel-features.h b/ports/sysdeps/unix/sysv/linux/tile/kernel-features.h
index 956f14c..0463448 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/kernel-features.h
+++ b/ports/sysdeps/unix/sysv/linux/tile/kernel-features.h
@@ -18,7 +18,6 @@
/* TILE glibc support starts with 2.6.36, guaranteeing many kernel features. */
-#define __ASSUME_MMAP2_SYSCALL 1
#define __ASSUME_STAT64_SYSCALL 1
#define __ASSUME_UTIMES 1
#define __ASSUME_FADVISE64_64_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/i386/mmap.S b/sysdeps/unix/sysv/linux/i386/mmap.S
index c8bf3e1..1f79bde 100644
--- a/sysdeps/unix/sysv/linux/i386/mmap.S
+++ b/sysdeps/unix/sysv/linux/i386/mmap.S
@@ -25,10 +25,6 @@
ENTRY (__mmap)
-/* I don't think it is worthwhile trying to use mmap2 whenever it
- is available. Only use it when we are sure the syscall exists. */
-#ifdef __ASSUME_MMAP2_SYSCALL
-
/* Save registers. */
pushl %ebp
cfi_adjust_cfa_offset (4)
@@ -73,25 +69,6 @@ L(skip):
cfi_adjust_cfa_offset (-4)
cfi_restore (ebp)
-#else
-
- /* Save registers. */
- movl %ebx, %edx
- cfi_register (ebx, edx)
-
- movl $SYS_ify(mmap), %eax /* System call number in %eax. */
-
- lea 4(%esp), %ebx /* Address of args is 1st arg. */
-
- /* Do the system call trap. */
- int $0x80
-
- /* Restore registers. */
- movl %edx, %ebx
- cfi_restore (ebx)
-
-#endif
-
/* If 0 > %eax > -4096 there was an error. */
cmpl $-4096, %eax
ja SYSCALL_ERROR_LABEL
diff --git a/sysdeps/unix/sysv/linux/i386/mmap64.S b/sysdeps/unix/sysv/linux/i386/mmap64.S
index 7599b85..8855109 100644
--- a/sysdeps/unix/sysv/linux/i386/mmap64.S
+++ b/sysdeps/unix/sysv/linux/i386/mmap64.S
@@ -37,8 +37,6 @@
.text
ENTRY (BP_SYM (__mmap64))
-#ifdef __NR_mmap2
-
/* Save registers. */
pushl %ebp
cfi_adjust_cfa_offset (4)
@@ -88,12 +86,6 @@ L(do_syscall):
cfi_adjust_cfa_offset (-4)
cfi_restore (ebp)
-#ifndef __ASSUME_MMAP2_SYSCALL
-2:
- cmp $-ENOSYS, %eax
- je 3f
-#endif
-
/* If 0 > %eax > -4096 there was an error. */
cmpl $-4096, %eax
ja SYSCALL_ERROR_LABEL
@@ -122,42 +114,6 @@ L(einval):
cfi_restore (ebp)
movl $-EINVAL, %eax
jmp SYSCALL_ERROR_LABEL
-#endif
-
-#if !defined __ASSUME_MMAP2_SYSCALL || !defined __NR_mmap2
-3:
- /* Save registers. */
- movl %ebx, %edx
- cfi_register (ebx, edx)
-
- cmpl $0, OFFHI-SVRSP(%esp)
- jne L(einval2)
-
- movl $SYS_ify(mmap), %eax /* System call number in %eax. */
-
- lea ADDR-SVRSP(%esp), %ebx /* Address of args is 1st arg. */
-
- /* Do the system call trap. */
- ENTER_KERNEL
-
- /* Restore registers. */
- movl %edx, %ebx
- cfi_restore (ebx)
-
- /* If 0 > %eax > -4096 there was an error. */
- cmpl $-4096, %eax
- ja SYSCALL_ERROR_LABEL
-
- /* Successful; return the syscall's value. */
- ret
-
- cfi_register (ebx, edx)
-L(einval2):
- movl %edx, %ebx
- cfi_restore (ebx)
- movl $-EINVAL, %eax
- jmp SYSCALL_ERROR_LABEL
-#endif
PSEUDO_END (BP_SYM (__mmap64))
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 6b0eb95..06e1511 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -40,20 +40,14 @@
/* The sendfile syscall was introduced in 2.2.0. */
#define __ASSUME_SENDFILE 1
-/* On x86 the mmap2 syscall was introduced in 2.3.31. */
-#ifdef __i386__
-# define __ASSUME_MMAP2_SYSCALL 1
-#endif
-
/* On x86 the stat64/lstat64/fstat64 syscalls were introduced in 2.3.34. */
#ifdef __i386__
# define __ASSUME_STAT64_SYSCALL 1
#endif
-/* On sparc the mmap2/stat64/lstat64/fstat64 syscalls were introduced
- in 2.3.35. */
+/* On sparc the stat64/lstat64/fstat64 syscalls were introduced in
+ 2.3.35. */
#if defined __sparc__ && !defined __arch64__
-# define __ASSUME_MMAP2_SYSCALL 1
# define __ASSUME_STAT64_SYSCALL 1
#endif
@@ -70,9 +64,8 @@
# define __ASSUME_IPC64 1
#endif
-/* SH kernels got stat64 and mmap2 during 2.4.0-test. */
+/* SH kernels got stat64 during 2.4.0-test. */
#ifdef __sh__
-# define __ASSUME_MMAP2_SYSCALL 1
# define __ASSUME_STAT64_SYSCALL 1
#endif
@@ -86,12 +79,6 @@
MIPS n32). */
#define __ASSUME_GETDENTS64_SYSCALL 1
-/* 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 defined __powerpc__ && !defined __powerpc64__
-# define __ASSUME_MMAP2_SYSCALL 1
-#endif
-
/* Beginning with 2.6.12 the clock and timer supports CPU clocks. */
#define __ASSUME_POSIX_CPU_TIMERS 1
diff --git a/sysdeps/unix/sysv/linux/mmap64.c b/sysdeps/unix/sysv/linux/mmap64.c
index 495d777..bca15f9 100644
--- a/sysdeps/unix/sysv/linux/mmap64.c
+++ b/sysdeps/unix/sysv/linux/mmap64.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999,2000,2001,2002,2006,2010 Free Software Foundation, Inc.
+/* Copyright (C) 1999-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 1999.
@@ -26,76 +26,42 @@
#include <kernel-features.h>
-#ifdef __NR_mmap2
-
/* This is always 12, even on architectures where PAGE_SHIFT != 12. */
-# if MMAP2_PAGE_SHIFT == -1
+#if MMAP2_PAGE_SHIFT == -1
static int page_shift;
-# else
-# ifndef MMAP2_PAGE_SHIFT
-# define MMAP2_PAGE_SHIFT 12
-# endif
-# define page_shift MMAP2_PAGE_SHIFT
-# endif
-
-# ifndef __ASSUME_MMAP2_SYSCALL
-static int have_no_mmap2;
+#else
+# ifndef MMAP2_PAGE_SHIFT
+# define MMAP2_PAGE_SHIFT 12
# endif
+#define page_shift MMAP2_PAGE_SHIFT
#endif
void *
__mmap64 (void *addr, size_t len, int prot, int flags, int fd, off64_t offset)
{
-#ifdef __NR_mmap2
-# if MMAP2_PAGE_SHIFT == -1
+#if MMAP2_PAGE_SHIFT == -1
if (page_shift == 0)
{
int page_size = getpagesize ();
while ((1 << ++page_shift) != page_size)
;
}
-# endif
- if (offset & ((1 << page_shift) - 1))
- {
- __set_errno (EINVAL);
- return MAP_FAILED;
- }
-# ifndef __ASSUME_MMAP2_SYSCALL
- if (! have_no_mmap2)
-# endif
- {
-# ifndef __ASSUME_MMAP2_SYSCALL
- int saved_errno = errno;
-# endif
- void *result;
- __ptrvalue (result) = (void *__unbounded)
- INLINE_SYSCALL (mmap2, 6, __ptrvalue (addr),
- len, prot, flags, fd,
- (off_t) (offset >> MMAP2_PAGE_SHIFT));
-# if __BOUNDED_POINTERS__
- __ptrlow (result) = __ptrvalue (result);
- __ptrhigh (result) = __ptrvalue (result) + len;
-# endif
-# ifndef __ASSUME_MMAP2_SYSCALL
- if (result != MAP_FAILED || errno != ENOSYS)
-# endif
- return result;
-
-# ifndef __ASSUME_MMAP2_SYSCALL
- __set_errno (saved_errno);
- have_no_mmap2 = 1;
-# endif
- }
#endif
-#ifndef __ASSUME_MMAP2_SYSCALL
- if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len))
+ if (offset & ((1 << page_shift) - 1))
{
__set_errno (EINVAL);
return MAP_FAILED;
}
-
- return __mmap (addr, len, prot, flags, fd, (off_t) offset);
+ void *result;
+ __ptrvalue (result) = (void *__unbounded)
+ INLINE_SYSCALL (mmap2, 6, __ptrvalue (addr),
+ len, prot, flags, fd,
+ (off_t) (offset >> MMAP2_PAGE_SHIFT));
+#if __BOUNDED_POINTERS__
+ __ptrlow (result) = __ptrvalue (result);
+ __ptrhigh (result) = __ptrvalue (result) + len;
#endif
+ return result;
}
weak_alias (__mmap64, mmap64)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S b/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S
index 6e5ba94..0357ab4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2001, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2000-2012 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
@@ -40,8 +40,8 @@ ENTRY(__mmap)
cfi_adjust_cfa_offset (120)
st %r1,0(%r15) /* store back chain */
- /* Store parameters on stack, because old_mmap/mmap2
- * take only one parameter: a pointer to the parameter area
+ /* Store parameters on stack, because mmap2
+ * takes only one parameter: a pointer to the parameter area
*/
st %r6,0x70(%r15) /* Store 'fd'. */
st %r5,0x6C(%r15) /* Store 'flags'. */
@@ -50,10 +50,6 @@ ENTRY(__mmap)
st %r2,0x60(%r15) /* Store 'start'. */
l %r1,216(%r15) /* Load offset. */
-#ifdef __ASSUME_MMAP2_SYSCALL
- /* I don't think it is worthwhile trying to use mmap2 whenever
- * it is available. Only use it when we are sure the syscall
- * exists. */
tml %r1,0x0fff /* Offset page aligned ? */
lhi %r2,-EINVAL
jnz 1f /* No -> EINVAL. */
@@ -61,11 +57,6 @@ ENTRY(__mmap)
st %r1,0x74(%r15) /* Store page offset. */
la %r2,0x60(%r15) /* Load address of parameter list. */
svc SYS_ify(mmap2) /* Do the system call trap. */
-#else
- st %r1,0x74(%r15) /* Store offset unmodified. */
- la %r2,0x60(%r15) /* Load address of parameter list. */
- svc SYS_ify(mmap) /* Do the system call trap. */
-#endif
1: l %r15,0(%r15) /* Load back chain. */
cfi_adjust_cfa_offset (-120)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S b/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S
index ad6d254..8b4bd45 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2001, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2000-2012 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
@@ -41,15 +41,14 @@ ENTRY(__mmap64)
cfi_adjust_cfa_offset (120)
st %r1,0(%r15) /* Store back chain. */
- /* Store parameters on stack, because mmap2 and old_mmap
- * take only one parameter: a pointer to the parameter area. */
+ /* Store parameters on stack, because mmap2
+ * takes only one parameter: a pointer to the parameter area. */
st %r6,0x70(%r15) /* Store 'fd'. */
st %r5,0x6C(%r15) /* Store 'flags'. */
st %r4,0x68(%r15) /* Store 'prot'. */
st %r3,0x64(%r15) /* Store 'length'. */
st %r2,0x60(%r15) /* Store 'start'. */
-#ifdef __NR_mmap2
lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
tml %r1,0x0fff /* Offset page aligned ? */
jnz 2f /* No -> EINVAL. */
@@ -61,11 +60,6 @@ ENTRY(__mmap64)
la %r2,0x60(%r15) /* Load address of parameter list. */
svc SYS_ify(mmap2) /* Do the system call trap. */
-#ifndef __ASSUME_MMAP2_SYSCALL
- chi %r2,-ENOSYS
- je 1f
-#endif
-
l %r15,0(%r15) /* Load back chain. */
cfi_adjust_cfa_offset (-120)
lm %r6,%r15,24(%r15) /* Load registers. */
@@ -78,31 +72,6 @@ ENTRY(__mmap64)
/* Successful; return the syscall's value. */
br %r14
-#endif
-
-#if !defined __ASSUME_MMAP2_SYSCALL || !defined __NR_mmap2
-1: lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
- st %r1,0x74(%r15) /* Store lower word of offset. */
- ltr %r0,%r0 /* Offset > 2^32 ? */
- jnz 2f
- alr %r1,%r3 /* Add length to offset. */
- brc 3,2f /* Carry -> EINVAL. */
-
- la %r2,0x60(%r15) /* Load address of parameter list. */
- svc SYS_ify(mmap) /* Do the system call trap. */
-
- l %r15,0(%r15) /* Load back chain. */
- lm %r6,%r15,24(%r15) /* Load registers. */
-
- /* Check gpr 2 for error. */
- lhi %r0,-4096
- clr %r2,%r0
- jnl SYSCALL_ERROR_LABEL
-
- /* Successful; return the syscall's value. */
- br %r14
-#endif
-
2: lhi %r2,-EINVAL
l %r15,0(%r15) /* Load back chain. */
lm %r6,%r15,24(%r15) /* Load registers. */
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 22 ++++++
ports/ChangeLog.arm | 5 ++
ports/ChangeLog.hppa | 5 ++
ports/ChangeLog.m68k | 5 ++
ports/ChangeLog.tile | 5 ++
.../sysdeps/unix/sysv/linux/arm/kernel-features.h | 3 +-
.../sysdeps/unix/sysv/linux/hppa/kernel-features.h | 1 -
.../sysdeps/unix/sysv/linux/m68k/kernel-features.h | 1 -
.../sysdeps/unix/sysv/linux/tile/kernel-features.h | 1 -
sysdeps/unix/sysv/linux/i386/mmap.S | 23 -------
sysdeps/unix/sysv/linux/i386/mmap64.S | 44 -------------
sysdeps/unix/sysv/linux/kernel-features.h | 19 +-----
sysdeps/unix/sysv/linux/mmap64.c | 68 +++++---------------
sysdeps/unix/sysv/linux/s390/s390-32/mmap.S | 15 +----
sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S | 37 +----------
15 files changed, 69 insertions(+), 185 deletions(-)
hooks/post-receive
--
GNU C Library master sources