Tidy the code affected by the floating point fixes.
A bunch of unused stuff is gone, including two sigcontext.c files,
which turned out to be entirely unneeded.
There are the usual fixes -
whitespace and style cleanups
copyright updates
emacs formatting comments gone
include cleanups
adding severities to printks
Signed-off-by: Jeff Dike <[EMAIL PROTECTED]>
--
arch/um/include/sysdep-i386/sigcontext.h | 13 ---
arch/um/include/sysdep-x86_64/sigcontext.h | 28 --------
arch/um/kernel/ptrace.c | 2
arch/um/os-Linux/sys-i386/registers.c | 26 ++++---
arch/um/sys-i386/Makefile | 6 -
arch/um/sys-i386/sigcontext.c | 71 ---------------------
arch/um/sys-x86_64/Makefile | 6 -
arch/um/sys-x86_64/ptrace.c | 97 +++++++++++------------------
arch/um/sys-x86_64/sigcontext.c | 39 -----------
arch/um/sys-x86_64/signal.c | 23 ++++--
include/asm-um/elf-x86_64.h | 12 ---
11 files changed, 76 insertions(+), 247 deletions(-)
Index: linux-2.6.22/arch/um/sys-x86_64/ptrace.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/ptrace.c 2007-08-23
12:42:18.000000000 -0400
+++ linux-2.6.22/arch/um/sys-x86_64/ptrace.c 2007-08-23 12:42:43.000000000
-0400
@@ -1,5 +1,6 @@
/*
* Copyright 2003 PathScale, Inc.
+ * Copyright (C) 2003 - 2007 Jeff Dike ([EMAIL PROTECTED],linux.intel}.com)
*
* Licensed under the GPL
*/
@@ -12,17 +13,10 @@
#include <asm/uaccess.h>
#include <asm/elf.h>
-/* XXX x86_64 */
-unsigned long not_ss;
-unsigned long not_ds;
-unsigned long not_es;
-
-#define SC_SS(r) (not_ss)
-#define SC_DS(r) (not_ds)
-#define SC_ES(r) (not_es)
-
-/* determines which flags the user has access to. */
-/* 1 = access 0 = no access */
+/*
+ * determines which flags the user has access to.
+ * 1 = access 0 = no access
+ */
#define FLAG_MASK 0x44dd5UL
int putreg(struct task_struct *child, int regno, unsigned long value)
@@ -66,20 +60,21 @@ int putreg(struct task_struct *child, in
int poke_user(struct task_struct *child, long addr, long data)
{
- if ((addr & 3) || addr < 0)
- return -EIO;
+ if ((addr & 3) || addr < 0)
+ return -EIO;
- if (addr < MAX_REG_OFFSET)
- return putreg(child, addr, data);
- else if((addr >= offsetof(struct user, u_debugreg[0])) &&
- (addr <= offsetof(struct user, u_debugreg[7]))){
- addr -= offsetof(struct user, u_debugreg[0]);
- addr = addr >> 2;
- if((addr == 4) || (addr == 5)) return -EIO;
- child->thread.arch.debugregs[addr] = data;
- return 0;
- }
- return -EIO;
+ if (addr < MAX_REG_OFFSET)
+ return putreg(child, addr, data);
+ else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
+ (addr <= offsetof(struct user, u_debugreg[7]))){
+ addr -= offsetof(struct user, u_debugreg[0]);
+ addr = addr >> 2;
+ if ((addr == 4) || (addr == 5))
+ return -EIO;
+ child->thread.arch.debugregs[addr] = data;
+ return 0;
+ }
+ return -EIO;
}
unsigned long getreg(struct task_struct *child, int regno)
@@ -107,29 +102,22 @@ unsigned long getreg(struct task_struct
int peek_user(struct task_struct *child, long addr, long data)
{
/* read the word at location addr in the USER area. */
- unsigned long tmp;
+ unsigned long tmp;
- if ((addr & 3) || addr < 0)
- return -EIO;
+ if ((addr & 3) || addr < 0)
+ return -EIO;
- tmp = 0; /* Default return condition */
- if(addr < MAX_REG_OFFSET){
- tmp = getreg(child, addr);
- }
- else if((addr >= offsetof(struct user, u_debugreg[0])) &&
- (addr <= offsetof(struct user, u_debugreg[7]))){
- addr -= offsetof(struct user, u_debugreg[0]);
- addr = addr >> 2;
- tmp = child->thread.arch.debugregs[addr];
- }
- return put_user(tmp, (unsigned long *) data);
-}
-
-void arch_switch(void)
-{
-/* XXX
- printk("arch_switch\n");
-*/
+ tmp = 0; /* Default return condition */
+ if (addr < MAX_REG_OFFSET){
+ tmp = getreg(child, addr);
+ }
+ else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
+ (addr <= offsetof(struct user, u_debugreg[7]))){
+ addr -= offsetof(struct user, u_debugreg[0]);
+ addr = addr >> 2;
+ tmp = child->thread.arch.debugregs[addr];
+ }
+ return put_user(tmp, (unsigned long *) data);
}
/* XXX Mostly copied from sys-i386 */
@@ -139,21 +127,21 @@ int is_syscall(unsigned long addr)
int n;
n = copy_from_user(&instr, (void __user *) addr, sizeof(instr));
- if(n){
+ if (n){
/* access_process_vm() grants access to vsyscall and stub,
* while copy_from_user doesn't. Maybe access_process_vm is
* slow, but that doesn't matter, since it will be called only
* in case of singlestepping, if copy_from_user failed.
*/
n = access_process_vm(current, addr, &instr, sizeof(instr), 0);
- if(n != sizeof(instr)) {
+ if (n != sizeof(instr)) {
printk("is_syscall : failed to read instruction from "
"0x%lx\n", addr);
- return(1);
+ return 1;
}
}
/* sysenter */
- return(instr == 0x050f);
+ return instr == 0x050f;
}
int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
@@ -204,14 +192,3 @@ long subarch_ptrace(struct task_struct *
return ret;
}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
Index: linux-2.6.22/include/asm-um/elf-x86_64.h
===================================================================
--- linux-2.6.22.orig/include/asm-um/elf-x86_64.h 2007-08-23
12:42:19.000000000 -0400
+++ linux-2.6.22/include/asm-um/elf-x86_64.h 2007-08-23 12:42:43.000000000
-0400
@@ -1,5 +1,6 @@
/*
* Copyright 2003 PathScale, Inc.
+ * Copyright (C) 2003 - 2007 Jeff Dike ([EMAIL PROTECTED],linux.intel}.com)
*
* Licensed under the GPL
*/
@@ -122,14 +123,3 @@ extern long elf_aux_hwcap;
#define SET_PERSONALITY(ex, ibcs2) do ; while(0)
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
Index: linux-2.6.22/arch/um/os-Linux/sys-i386/registers.c
===================================================================
--- linux-2.6.22.orig/arch/um/os-Linux/sys-i386/registers.c 2007-08-23
10:35:21.000000000 -0400
+++ linux-2.6.22/arch/um/os-Linux/sys-i386/registers.c 2007-08-23
12:42:43.000000000 -0400
@@ -1,49 +1,55 @@
/*
* Copyright (C) 2004 PathScale, Inc
+ * Copyright (C) 2004 - 2007 Jeff Dike ([EMAIL PROTECTED],linux.intel}.com)
* Licensed under the GPL
*/
#include <errno.h>
-#include <sysdep/ptrace_user.h>
+#include "kern_constants.h"
#include "longjmp.h"
#include "user.h"
+#include "sysdep/ptrace_user.h"
int save_fp_registers(int pid, unsigned long *fp_regs)
{
- if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
+ if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
int restore_fp_registers(int pid, unsigned long *fp_regs)
{
- if(ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
+ if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
int save_fpx_registers(int pid, unsigned long *fp_regs)
{
- if(ptrace(PTRACE_GETFPXREGS, pid, 0, fp_regs) < 0)
+ if (ptrace(PTRACE_GETFPXREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
int restore_fpx_registers(int pid, unsigned long *fp_regs)
{
- if(ptrace(PTRACE_SETFPXREGS, pid, 0, fp_regs) < 0)
+ if (ptrace(PTRACE_SETFPXREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
unsigned long get_thread_reg(int reg, jmp_buf *buf)
{
- switch(reg){
- case EIP: return buf[0]->__eip;
- case UESP: return buf[0]->__esp;
- case EBP: return buf[0]->__ebp;
+ switch (reg) {
+ case EIP:
+ return buf[0]->__eip;
+ case UESP:
+ return buf[0]->__esp;
+ case EBP:
+ return buf[0]->__ebp;
default:
- printk("get_thread_regs - unknown register %d\n", reg);
+ printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
+ reg);
return 0;
}
}
Index: linux-2.6.22/arch/um/kernel/ptrace.c
===================================================================
--- linux-2.6.22.orig/arch/um/kernel/ptrace.c 2007-08-23 12:42:18.000000000
-0400
+++ linux-2.6.22/arch/um/kernel/ptrace.c 2007-08-23 12:42:43.000000000
-0400
@@ -171,8 +171,6 @@ long arch_ptrace(struct task_struct *chi
*/
ret = copy_to_user(p, &child->thread.arch.faultinfo,
sizeof(struct ptrace_faultinfo));
- if (ret)
- break;
break;
}
Index: linux-2.6.22/arch/um/include/sysdep-i386/sigcontext.h
===================================================================
--- linux-2.6.22.orig/arch/um/include/sysdep-i386/sigcontext.h 2007-08-22
17:57:09.000000000 -0400
+++ linux-2.6.22/arch/um/include/sysdep-i386/sigcontext.h 2007-08-23
12:42:43.000000000 -0400
@@ -6,15 +6,10 @@
#ifndef __SYS_SIGCONTEXT_I386_H
#define __SYS_SIGCONTEXT_I386_H
-#include "uml-config.h"
-#include "skas.h"
#include "sysdep/sc.h"
#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
-#define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
-#define SC_SET_SYSCALL_RETURN(sc, result) SC_EAX(sc) = (result)
-
#define GET_FAULTINFO_FROM_SC(fi,sc) \
{ \
(fi).cr2 = SC_CR2(sc); \
@@ -22,18 +17,10 @@
(fi).trap_no = SC_TRAPNO(sc); \
}
-/* ptrace expects that, at the start of a system call, %eax contains
- * -ENOSYS, so this makes it so.
- */
-#define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0)
-
/* This is Page Fault */
#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
/* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */
#define SEGV_MAYBE_FIXABLE(fi) ((fi)->trap_no == 0 && ptrace_faultinfo)
-extern unsigned long *sc_sigmask(void *sc_ptr);
-extern int sc_get_fpregs(unsigned long buf, void *sc_ptr);
-
#endif
Index: linux-2.6.22/arch/um/include/sysdep-x86_64/sigcontext.h
===================================================================
--- linux-2.6.22.orig/arch/um/include/sysdep-x86_64/sigcontext.h
2007-08-22 17:57:09.000000000 -0400
+++ linux-2.6.22/arch/um/include/sysdep-x86_64/sigcontext.h 2007-08-23
12:42:43.000000000 -0400
@@ -11,43 +11,17 @@
#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
-#define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
-#define SC_SET_SYSCALL_RETURN(sc, result) SC_RAX(sc) = (result)
-
-#define SC_FAULT_ADDR(sc) SC_CR2(sc)
-#define SC_FAULT_TYPE(sc) SC_ERR(sc)
-
-#define GET_FAULTINFO_FROM_SC(fi,sc) \
+#define GET_FAULTINFO_FROM_SC(fi, sc) \
{ \
(fi).cr2 = SC_CR2(sc); \
(fi).error_code = SC_ERR(sc); \
(fi).trap_no = SC_TRAPNO(sc); \
}
-/* ptrace expects that, at the start of a system call, %eax contains
- * -ENOSYS, so this makes it so.
- */
-
-#define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0)
-
/* This is Page Fault */
#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
/* No broken SKAS API, which doesn't pass trap_no, here. */
#define SEGV_MAYBE_FIXABLE(fi) 0
-extern unsigned long *sc_sigmask(void *sc_ptr);
-
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
-
Index: linux-2.6.22/arch/um/sys-i386/Makefile
===================================================================
--- linux-2.6.22.orig/arch/um/sys-i386/Makefile 2007-08-22 17:57:09.000000000
-0400
+++ linux-2.6.22/arch/um/sys-i386/Makefile 2007-08-23 12:42:43.000000000
-0400
@@ -3,14 +3,14 @@
#
obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
- ptrace_user.o setjmp.o signal.o sigcontext.o stub.o stub_segv.o \
- syscalls.o sysrq.o sys_call_table.o tls.o
+ ptrace_user.o setjmp.o signal.o stub.o stub_segv.o syscalls.o sysrq.o \
+ sys_call_table.o tls.o
subarch-obj-y = lib/bitops.o lib/semaphore.o lib/string.o
subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem.o
subarch-obj-$(CONFIG_MODULES) += kernel/module.o
-USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o
+USER_OBJS := bugs.o ptrace_user.o fault.o
USER_OBJS += user-offsets.s
extra-y += user-offsets.s
Index: linux-2.6.22/arch/um/sys-i386/sigcontext.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-i386/sigcontext.c 2007-08-22
17:57:09.000000000 -0400
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,71 +0,0 @@
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike ([EMAIL PROTECTED])
- * Licensed under the GPL
- */
-
-#include <stddef.h>
-#include <string.h>
-#include <asm/ptrace.h>
-#include <asm/sigcontext.h>
-#include "sysdep/ptrace.h"
-#include "kern_util.h"
-
-void sc_to_sc(void *to_ptr, void *from_ptr)
-{
- struct sigcontext *to = to_ptr, *from = from_ptr;
-
- memcpy(to, from, sizeof(*to) + sizeof(struct _fpstate));
- if(from->fpstate != NULL)
- to->fpstate = (struct _fpstate *) (to + 1);
-}
-
-unsigned long *sc_sigmask(void *sc_ptr)
-{
- struct sigcontext *sc = sc_ptr;
- return &sc->oldmask;
-}
-
-int sc_get_fpregs(unsigned long buf, void *sc_ptr)
-{
- struct sigcontext *sc = sc_ptr;
- struct _fpstate *from = sc->fpstate, *to = (struct _fpstate *) buf;
- int err = 0;
-
- if(from == NULL){
- err |= clear_user_proc(&to->cw, sizeof(to->cw));
- err |= clear_user_proc(&to->sw, sizeof(to->sw));
- err |= clear_user_proc(&to->tag, sizeof(to->tag));
- err |= clear_user_proc(&to->ipoff, sizeof(to->ipoff));
- err |= clear_user_proc(&to->cssel, sizeof(to->cssel));
- err |= clear_user_proc(&to->dataoff, sizeof(to->dataoff));
- err |= clear_user_proc(&to->datasel, sizeof(to->datasel));
- err |= clear_user_proc(&to->_st, sizeof(to->_st));
- }
- else {
- err |= copy_to_user_proc(&to->cw, &from->cw, sizeof(to->cw));
- err |= copy_to_user_proc(&to->sw, &from->sw, sizeof(to->sw));
- err |= copy_to_user_proc(&to->tag, &from->tag,
- sizeof(to->tag));
- err |= copy_to_user_proc(&to->ipoff, &from->ipoff,
- sizeof(to->ipoff));
- err |= copy_to_user_proc(&to->cssel,& from->cssel,
- sizeof(to->cssel));
- err |= copy_to_user_proc(&to->dataoff, &from->dataoff,
- sizeof(to->dataoff));
- err |= copy_to_user_proc(&to->datasel, &from->datasel,
- sizeof(to->datasel));
- err |= copy_to_user_proc(to->_st, from->_st, sizeof(to->_st));
- }
- return(err);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
Index: linux-2.6.22/arch/um/sys-x86_64/Makefile
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/Makefile 2007-08-22
17:57:09.000000000 -0400
+++ linux-2.6.22/arch/um/sys-x86_64/Makefile 2007-08-23 12:42:43.000000000
-0400
@@ -5,8 +5,8 @@
#
obj-y = bug.o bugs.o delay.o fault.o ldt.o mem.o ptrace.o ptrace_user.o \
- setjmp.o sigcontext.o signal.o stub.o stub_segv.o syscalls.o \
- syscall_table.o sysrq.o ksyms.o tls.o
+ setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \
+ sysrq.o ksyms.o tls.o
obj-$(CONFIG_MODULES) += um_module.o
@@ -15,7 +15,7 @@ subarch-obj-$(CONFIG_MODULES) += kernel/
ldt-y = ../sys-i386/ldt.o
-USER_OBJS := ptrace_user.o sigcontext.o
+USER_OBJS := ptrace_user.o
USER_OBJS += user-offsets.s
extra-y += user-offsets.s
Index: linux-2.6.22/arch/um/sys-x86_64/sigcontext.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/sigcontext.c 2007-08-22
17:57:09.000000000 -0400
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,39 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <signal.h>
-#include "user.h"
-
-void sc_to_sc(void *to_ptr, void *from_ptr)
-{
- struct sigcontext *to = to_ptr, *from = from_ptr;
- int size = sizeof(*to); /* + sizeof(struct _fpstate); */
-
- memcpy(to, from, size);
- if(from->fpstate != NULL)
- to->fpstate = (struct _fpstate *) (to + 1);
-
- to->fpstate = NULL;
-}
-
-unsigned long *sc_sigmask(void *sc_ptr)
-{
- struct sigcontext *sc = sc_ptr;
-
- return(&sc->oldmask);
-}
-
-/* Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
Index: linux-2.6.22/arch/um/sys-x86_64/signal.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/signal.c 2007-08-23
12:18:22.000000000 -0400
+++ linux-2.6.22/arch/um/sys-x86_64/signal.c 2007-08-23 12:42:43.000000000
-0400
@@ -1,5 +1,6 @@
/*
* Copyright (C) 2003 PathScale, Inc.
+ * Copyright (C) 2003 - 2007 Jeff Dike ([EMAIL PROTECTED],linux.intel}.com)
* Licensed under the GPL
*/
@@ -110,7 +111,8 @@ static int copy_sc_to_user(struct sigcon
err |= PUTREG(regs, RDI, to, rdi);
err |= PUTREG(regs, RSI, to, rsi);
err |= PUTREG(regs, RBP, to, rbp);
- /* Must use orignal RSP, which is passed in, rather than what's in
+ /*
+ * Must use orignal RSP, which is passed in, rather than what's in
* the pt_regs, because that's already been updated to point at the
* signal frame.
*/
@@ -152,7 +154,7 @@ static int copy_sc_to_user(struct sigcon
if (copy_to_user(to_fp, &fp, sizeof(struct user_i387_struct)))
return 1;
- return(err);
+ return err;
}
struct rt_sigframe
@@ -188,7 +190,8 @@ int setup_signal_stack_si(unsigned long
goto out;
}
- /* Update SP now because the page fault handler refuses to extend
+ /*
+ * Update SP now because the page fault handler refuses to extend
* the stack if the faulting address is too far below the current
* SP, which frame now certainly is. If there's an error, the original
* value is restored on the way out.
@@ -216,8 +219,10 @@ int setup_signal_stack_si(unsigned long
err |= __copy_to_user(&frame->uc.uc_sigmask, set,
sizeof(*set));
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
+ /*
+ * Set up to return from userspace. If provided, use a stub
+ * already in userspace.
+ */
/* x86-64 should always use SA_RESTORER. */
if (ka->sa.sa_flags & SA_RESTORER)
err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
@@ -239,8 +244,10 @@ int setup_signal_stack_si(unsigned long
/* In case the signal handler was declared without prototypes */
PT_REGS_RAX(regs) = 0;
- /* This also works for non SA_SIGINFO handlers because they expect the
- next argument after the signal number on the stack. */
+ /*
+ * This also works for non SA_SIGINFO handlers because they expect the
+ * next argument after the signal number on the stack.
+ */
PT_REGS_RSI(regs) = (unsigned long) &frame->info;
PT_REGS_RDX(regs) = (unsigned long) &frame->uc;
PT_REGS_RIP(regs) = (unsigned long) ka->sa.sa_handler;
@@ -276,7 +283,7 @@ long sys_rt_sigreturn(struct pt_regs *re
/* Avoid ERESTART handling */
PT_REGS_SYSCALL_NR(¤t->thread.regs) = -1;
- return(PT_REGS_SYSCALL_RET(¤t->thread.regs));
+ return PT_REGS_SYSCALL_RET(¤t->thread.regs);
segfault:
force_sig(SIGSEGV, current);
-------------------------------------------------------------------------
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