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-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S18
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S230
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S284
3 files changed, 448 insertions, 84 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S
index 71e96d2228..e66db146ec 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -20,6 +20,7 @@
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
+#include <structsem.h>
#ifndef UP
# define LOCK lock
@@ -40,19 +41,26 @@ __new_sem_post:
pushl %ebx
movl 8(%esp), %ebx
- movl $1, %edx
+
LOCK
- xaddl %edx, (%ebx)
+#if VALUE == 0
+ addl $1, (%ebx)
+#else
+ addl $1, VALUE(%ebx)
+#endif
+
+ cmpl $0, NWAITERS(%ebx)
+ je 2f
movl $SYS_futex, %eax
movl $FUTEX_WAKE, %ecx
- addl $1, %edx
+ movl $1, %edx
ENTER_KERNEL
testl %eax, %eax
js 1f
- xorl %eax, %eax
+2: xorl %eax, %eax
popl %ebx
ret
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
index bf70e17fca..3677ab3bf9 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
@@ -20,6 +20,7 @@
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
+#include <structsem.h>
#ifndef UP
# define LOCK lock
@@ -32,19 +33,18 @@
#define FUTEX_WAKE 1
+#if VALUE != 0
+# error "code needs to be rewritten for VALUE != 0"
+#endif
+
+
.text
.globl sem_timedwait
.type sem_timedwait,@function
.align 16
- cfi_startproc
sem_timedwait:
- /* First check for cancellation. */
- movl %gs:CANCELHANDLING, %eax
- andl $0xfffffff9, %eax
- cmpl $8, %eax
- je 10f
-
+.LSTARTCODE:
movl 4(%esp), %ecx
movl (%ecx), %eax
@@ -61,24 +61,24 @@ sem_timedwait:
/* Check whether the timeout value is valid. */
1: pushl %esi
- cfi_adjust_cfa_offset(4)
+.Lpush_esi:
pushl %edi
- cfi_adjust_cfa_offset(4)
+.Lpush_edi:
pushl %ebx
- cfi_adjust_cfa_offset(4)
+.Lpush_ebx:
subl $12, %esp
- cfi_adjust_cfa_offset(12)
+.Lsub_esp:
movl 32(%esp), %edi
- cfi_offset(7, -12) /* %edi */
/* Check for invalid nanosecond field. */
cmpl $1000000000, 4(%edi)
movl $EINVAL, %esi
- cfi_offset(6, -8) /* %esi */
jae 6f
- cfi_offset(3, -16) /* %ebx */
+ LOCK
+ incl NWAITERS(%ecx)
+
7: xorl %ecx, %ecx
movl %esp, %ebx
movl %ecx, %edx
@@ -103,10 +103,11 @@ sem_timedwait:
movl %ecx, (%esp) /* Store relative timeout. */
movl %edx, 4(%esp)
+.LcleanupSTART:
call __pthread_enable_asynccancel
movl %eax, 8(%esp)
- movl 28(%esp), %ebx
+ movl 28(%esp), %ebx /* Load semaphore address. */
xorl %ecx, %ecx
movl %esp, %esi
movl $SYS_futex, %eax
@@ -116,6 +117,7 @@ sem_timedwait:
movl 8(%esp), %eax
call __pthread_disable_asynccancel
+.LcleanupEND:
testl %esi, %esi
je 9f
@@ -131,24 +133,22 @@ sem_timedwait:
cmpxchgl %ecx, (%ebx)
jne 8b
- addl $12, %esp
- cfi_adjust_cfa_offset(-12)
xorl %eax, %eax
+
+10: LOCK
+ decl NWAITERS(%ebx)
+
+ addl $12, %esp
+.Ladd_esp:
popl %ebx
- cfi_adjust_cfa_offset(-4)
- cfi_restore(3)
+.Lpop_ebx:
popl %edi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(7)
+.Lpop_edi:
popl %esi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(6)
+.Lpop_esi:
ret
- cfi_adjust_cfa_offset(24)
- cfi_offset(6, -8) /* %esi */
- cfi_offset(7, -12) /* %edi */
- cfi_offset(3, -16) /* %ebx */
+.Lafter_ret:
3: negl %esi
6:
#ifdef PIC
@@ -172,25 +172,163 @@ sem_timedwait:
movl %esi, (%eax)
#endif
- addl $12, %esp
- cfi_adjust_cfa_offset(-12)
+ movl 28(%esp), %ebx /* Load semaphore address. */
orl $-1, %eax
- popl %ebx
- cfi_adjust_cfa_offset(-4)
- cfi_restore(3)
- popl %edi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(7)
- popl %esi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(6)
- ret
+ jmp 10b
+ .size sem_timedwait,.-sem_timedwait
-10: /* Canceled. */
- movl $0xffffffff, %gs:RESULT
+
+ .type sem_wait_cleanup,@function
+sem_wait_cleanup:
LOCK
- orl $0x10, %gs:CANCELHANDLING
- movl %gs:CLEANUP_JMP_BUF, %eax
- jmp HIDDEN_JUMPTARGET (__pthread_unwind)
- cfi_endproc
- .size sem_timedwait,.-sem_timedwait
+ decl NWAITERS(%ebx)
+ movl %eax, (%esp)
+.LcallUR:
+ call _Unwind_Resume@PLT
+ hlt
+.LENDCODE:
+ .size sem_wait_cleanup,.-sem_wait_cleanup
+
+
+ .section .gcc_except_table,"a",@progbits
+.LexceptSTART:
+ .byte 0xff # @LPStart format (omit)
+ .byte 0xff # @TType format (omit)
+ .byte 0x01 # call-site format
+ # DW_EH_PE_uleb128
+ .uleb128 .Lcstend-.Lcstbegin
+.Lcstbegin:
+ .uleb128 .LcleanupSTART-.LSTARTCODE
+ .uleb128 .LcleanupEND-.LcleanupSTART
+ .uleb128 sem_wait_cleanup-.LSTARTCODE
+ .uleb128 0
+ .uleb128 .LcallUR-.LSTARTCODE
+ .uleb128 .LENDCODE-.LcallUR
+ .uleb128 0
+ .uleb128 0
+.Lcstend:
+
+
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAME:
+ .long .LENDCIE-.LSTARTCIE # Length of the CIE.
+.LSTARTCIE:
+ .long 0 # CIE ID.
+ .byte 1 # Version number.
+#ifdef SHARED
+ .string "zPLR" # NUL-terminated augmentation
+ # string.
+#else
+ .string "zPL" # NUL-terminated augmentation
+ # string.
+#endif
+ .uleb128 1 # Code alignment factor.
+ .sleb128 -4 # Data alignment factor.
+ .byte 8 # Return address register
+ # column.
+#ifdef SHARED
+ .uleb128 7 # Augmentation value length.
+ .byte 0x9b # Personality: DW_EH_PE_pcrel
+ # + DW_EH_PE_sdata4
+ # + DW_EH_PE_indirect
+ .long DW.ref.__gcc_personality_v0-.
+ .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel
+ # + DW_EH_PE_sdata4.
+ .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel
+ # + DW_EH_PE_sdata4.
+#else
+ .uleb128 6 # Augmentation value length.
+ .byte 0x0 # Personality: absolute
+ .long __gcc_personality_v0
+ .byte 0x0 # LSDA Encoding: absolute
+#endif
+ .byte 0x0c # DW_CFA_def_cfa
+ .uleb128 4
+ .uleb128 4
+ .byte 0x88 # DW_CFA_offset, column 0x10
+ .uleb128 1
+ .align 4
+.LENDCIE:
+
+ .long .LENDFDE-.LSTARTFDE # Length of the FDE.
+.LSTARTFDE:
+ .long .LSTARTFDE-.LSTARTFRAME # CIE pointer.
+#ifdef SHARED
+ .long .LSTARTCODE-. # PC-relative start address
+ # of the code.
+#else
+ .long .LSTARTCODE # Start address of the code.
+#endif
+ .long .LENDCODE-.LSTARTCODE # Length of the code.
+ .uleb128 4 # Augmentation size
+#ifdef SHARED
+ .long .LexceptSTART-.
+#else
+ .long .LexceptSTART
+#endif
+
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_esi-.LSTARTCODE
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 8
+ .byte 0x86 # DW_CFA_offset %esi
+ .uleb128 2
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_edi-.Lpush_esi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 12
+ .byte 0x87 # DW_CFA_offset %edi
+ .uleb128 3
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_ebx-.Lpush_edi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 16
+ .byte 0x83 # DW_CFA_offset %ebx
+ .uleb128 4
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lsub_esp-.Lpush_ebx
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 28
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Ladd_esp-.Lsub_esp
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 16
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpop_ebx-.Ladd_esp
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 12
+ .byte 0xc3 # DW_CFA_restore %ebx
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpop_edi-.Lpop_ebx
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 8
+ .byte 0xc7 # DW_CFA_restore %edi
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpop_esi-.Lpop_edi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 4
+ .byte 0xc6 # DW_CFA_restore %esi
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lafter_ret-.Lpop_esi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 28
+ .byte 0x86 # DW_CFA_offset %esi
+ .uleb128 2
+ .byte 0x87 # DW_CFA_offset %edi
+ .uleb128 3
+ .byte 0x83 # DW_CFA_offset %ebx
+ .uleb128 4
+ .align 4
+.LENDFDE:
+
+
+#ifdef SHARED
+ .hidden DW.ref.__gcc_personality_v0
+ .weak DW.ref.__gcc_personality_v0
+ .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
+ .align 4
+ .type DW.ref.__gcc_personality_v0, @object
+ .size DW.ref.__gcc_personality_v0, 4
+DW.ref.__gcc_personality_v0:
+ .long __gcc_personality_v0
+#endif
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S
index b1296275d0..bb4d6443e9 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -20,6 +20,7 @@
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
+#include <structsem.h>
#ifndef UP
# define LOCK lock
@@ -31,19 +32,253 @@
#define FUTEX_WAKE 1
+#if VALUE != 0
+# error "code needs to be rewritten for VALUE != 0"
+#endif
+
.text
.globl __new_sem_wait
.type __new_sem_wait,@function
.align 16
- cfi_startproc
__new_sem_wait:
- /* First check for cancellation. */
- movl %gs:CANCELHANDLING, %eax
- andl $0xfffffff9, %eax
- cmpl $8, %eax
- je 5f
+.LSTARTCODE:
+ pushl %ebx
+.Lpush_ebx:
+ pushl %esi
+.Lpush_esi:
+ subl $4, %esp
+.Lsub_esp:
+
+ movl 16(%esp), %ebx
+
+ movl (%ebx), %eax
+2: testl %eax, %eax
+ je 1f
+
+ leal -1(%eax), %edx
+ LOCK
+ cmpxchgl %edx, (%ebx)
+ jne 2b
+7: xorl %eax, %eax
+
+9: movl 4(%esp), %esi
+ movl 8(%esp), %ebx
+ addl $12, %esp
+.Ladd_esp:
+ ret
+
+.Lafter_ret:
+1: LOCK
+ incl NWAITERS(%ebx)
+
+.LcleanupSTART:
+6: call __pthread_enable_asynccancel
+ movl %eax, (%esp)
+
+ xorl %esi, %esi
+ movl $SYS_futex, %eax
+ movl %esi, %ecx
+ movl %esi, %edx
+ ENTER_KERNEL
+ movl %eax, %esi
+
+ movl (%esp), %eax
+ call __pthread_disable_asynccancel
+.LcleanupEND:
+
+ testl %esi, %esi
+ je 3f
+ cmpl $-EWOULDBLOCK, %esi
+ jne 4f
+
+3:
+ movl (%ebx), %eax
+5: testl %eax, %eax
+ je 6b
+
+ leal -1(%eax), %edx
+ LOCK
+ cmpxchgl %edx, (%ebx)
+ jne 5b
+
+ LOCK
+ decl NWAITERS(%ebx)
+ jmp 7b
+
+4: LOCK
+ decl NWAITERS(%ebx)
+
+ negl %esi
+#ifdef PIC
+ call __i686.get_pc_thunk.bx
+#else
+ movl $8f, %ebx
+8:
+#endif
+ addl $_GLOBAL_OFFSET_TABLE_, %ebx
+#if USE___THREAD
+# ifdef NO_TLS_DIRECT_SEG_REFS
+ movl errno@gotntpoff(%ebx), %edx
+ addl %gs:0, %edx
+ movl %esi, (%edx)
+# else
+ movl errno@gotntpoff(%ebx), %edx
+ movl %esi, %gs:(%edx)
+# endif
+#else
+ call __errno_location@plt
+ movl %esi, (%eax)
+#endif
+ orl $-1, %eax
+
+ jmp 9b
+ .size __new_sem_wait,.-__new_sem_wait
+ versioned_symbol(libpthread, __new_sem_wait, sem_wait, GLIBC_2_1)
+
+
+ .type sem_wait_cleanup,@function
+sem_wait_cleanup:
+ LOCK
+ decl NWAITERS(%ebx)
+ movl %eax, (%esp)
+.LcallUR:
+ call _Unwind_Resume@PLT
+ hlt
+.LENDCODE:
+ .size sem_wait_cleanup,.-sem_wait_cleanup
+
+
+ .section .gcc_except_table,"a",@progbits
+.LexceptSTART:
+ .byte 0xff # @LPStart format (omit)
+ .byte 0xff # @TType format (omit)
+ .byte 0x01 # call-site format
+ # DW_EH_PE_uleb128
+ .uleb128 .Lcstend-.Lcstbegin
+.Lcstbegin:
+ .uleb128 .LcleanupSTART-.LSTARTCODE
+ .uleb128 .LcleanupEND-.LcleanupSTART
+ .uleb128 sem_wait_cleanup-.LSTARTCODE
+ .uleb128 0
+ .uleb128 .LcallUR-.LSTARTCODE
+ .uleb128 .LENDCODE-.LcallUR
+ .uleb128 0
+ .uleb128 0
+.Lcstend:
+
+
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAME:
+ .long .LENDCIE-.LSTARTCIE # Length of the CIE.
+.LSTARTCIE:
+ .long 0 # CIE ID.
+ .byte 1 # Version number.
+#ifdef SHARED
+ .string "zPLR" # NUL-terminated augmentation
+ # string.
+#else
+ .string "zPL" # NUL-terminated augmentation
+ # string.
+#endif
+ .uleb128 1 # Code alignment factor.
+ .sleb128 -4 # Data alignment factor.
+ .byte 8 # Return address register
+ # column.
+#ifdef SHARED
+ .uleb128 7 # Augmentation value length.
+ .byte 0x9b # Personality: DW_EH_PE_pcrel
+ # + DW_EH_PE_sdata4
+ # + DW_EH_PE_indirect
+ .long DW.ref.__gcc_personality_v0-.
+ .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel
+ # + DW_EH_PE_sdata4.
+ .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel
+ # + DW_EH_PE_sdata4.
+#else
+ .uleb128 6 # Augmentation value length.
+ .byte 0x0 # Personality: absolute
+ .long __gcc_personality_v0
+ .byte 0x0 # LSDA Encoding: absolute
+#endif
+ .byte 0x0c # DW_CFA_def_cfa
+ .uleb128 4
+ .uleb128 4
+ .byte 0x88 # DW_CFA_offset, column 0x10
+ .uleb128 1
+ .align 4
+.LENDCIE:
+
+ .long .LENDFDE-.LSTARTFDE # Length of the FDE.
+.LSTARTFDE:
+ .long .LSTARTFDE-.LSTARTFRAME # CIE pointer.
+#ifdef SHARED
+ .long .LSTARTCODE-. # PC-relative start address
+ # of the code.
+#else
+ .long .LSTARTCODE # Start address of the code.
+#endif
+ .long .LENDCODE-.LSTARTCODE # Length of the code.
+ .uleb128 4 # Augmentation size
+#ifdef SHARED
+ .long .LexceptSTART-.
+#else
+ .long .LexceptSTART
+#endif
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_ebx-.LSTARTCODE
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 8
+ .byte 0x83 # DW_CFA_offset %ebx
+ .uleb128 2
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_esi-.Lpush_ebx
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 12
+ .byte 0x86 # DW_CFA_offset %esi
+ .uleb128 3
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lsub_esp-.Lpush_esi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 16
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Ladd_esp-.Lsub_esp
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 4
+ .byte 0xc3 # DW_CFA_restore %ebx
+ .byte 0xc6 # DW_CFA_restore %esi
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lafter_ret-.Ladd_esp
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 16
+ .byte 0x83 # DW_CFA_offset %ebx
+ .uleb128 2
+ .byte 0x86 # DW_CFA_offset %esi
+ .uleb128 3
+ .align 4
+.LENDFDE:
+
+
+#ifdef SHARED
+ .hidden DW.ref.__gcc_personality_v0
+ .weak DW.ref.__gcc_personality_v0
+ .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
+ .align 4
+ .type DW.ref.__gcc_personality_v0, @object
+ .size DW.ref.__gcc_personality_v0, 4
+DW.ref.__gcc_personality_v0:
+ .long __gcc_personality_v0
+#endif
+
+
+#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
+ .section ".text.compat", "ax"
+ .global __old_sem_wait
+ .type __old_sem_wait,@function
+ .align 16
+ cfi_startproc
+__old_sem_wait:
pushl %ebx
cfi_adjust_cfa_offset(4)
pushl %esi
@@ -52,9 +287,9 @@ __new_sem_wait:
cfi_adjust_cfa_offset(4)
movl 16(%esp), %ebx
- cfi_offset(3, -8) /* %ebx */
+ cfi_offset(ebx, -8)
- cfi_offset(6, -12) /* %esi */
+ cfi_offset(esi, -12)
3: movl (%ebx), %eax
2: testl %eax, %eax
je 1f
@@ -65,17 +300,17 @@ __new_sem_wait:
jne 2b
xorl %eax, %eax
- movl 4(%esp), %esi
- cfi_restore(6)
+5: movl 4(%esp), %esi
movl 8(%esp), %ebx
- cfi_restore(3)
addl $12, %esp
+ cfi_restore(ebx)
+ cfi_restore(esi)
cfi_adjust_cfa_offset(-12)
ret
cfi_adjust_cfa_offset(12)
- cfi_offset(3, -8) /* %ebx */
- cfi_offset(6, -12) /* %esi */
+ cfi_offset(ebx, -8)
+ cfi_offset(esi, -12)
1: call __pthread_enable_asynccancel
movl %eax, (%esp)
@@ -115,25 +350,8 @@ __new_sem_wait:
movl %esi, (%eax)
#endif
orl $-1, %eax
- movl 4(%esp), %esi
- cfi_restore(6)
- movl 8(%esp), %ebx
- cfi_restore(3)
- addl $12, %esp
- cfi_adjust_cfa_offset(-12)
- ret
-
-5: /* Canceled. */
- movl $0xffffffff, %gs:RESULT
- LOCK
- orl $0x10, %gs:CANCELHANDLING
- movl %gs:CLEANUP_JMP_BUF, %eax
- jmp HIDDEN_JUMPTARGET (__pthread_unwind)
+ jmp 5b
cfi_endproc
- .size __new_sem_wait,.-__new_sem_wait
- versioned_symbol(libpthread, __new_sem_wait, sem_wait, GLIBC_2_1)
-#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
- .global __old_sem_wait
-__old_sem_wait = __new_sem_wait
+ .size __old_sem_wait,.-__old_sem_wait
compat_symbol(libpthread, __old_sem_wait, sem_wait, GLIBC_2_0)
#endif
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