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Date: Thu, 15 Mar 2012 20:59:31 +0000
From: David Howells <dhowells@...hat.com>
To: paul.gortmaker@...driver.com
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
arnd@...db.de, David Howells <dhowells@...hat.com>,
Guan Xuetao <gxt@...c.pku.edu.cn>
Subject: [PATCH 27/38] Disintegrate asm/system.h for Unicore32 [ver #3]
Disintegrate asm/system.h for Unicore32. Not Compiled.
Signed-off-by: David Howells <dhowells@...hat.com>
cc: Guan Xuetao <gxt@...c.pku.edu.cn>
---
arch/unicore32/include/asm/Kbuild | 2
arch/unicore32/include/asm/barrier.h | 28 +++++
arch/unicore32/include/asm/bug.h | 33 ++++++
arch/unicore32/include/asm/cmpxchg.h | 58 +++++++++++
arch/unicore32/include/asm/cr.h | 49 +++++++++
arch/unicore32/include/asm/exec.h | 15 +++
arch/unicore32/include/asm/io.h | 1
arch/unicore32/include/asm/pgtable.h | 3 +
arch/unicore32/include/asm/setup.h | 18 +++
arch/unicore32/include/asm/switch_to.h | 30 ++++++
arch/unicore32/include/asm/system.h | 168 +-------------------------------
arch/unicore32/include/asm/uaccess.h | 1
arch/unicore32/kernel/dma.c | 1
arch/unicore32/kernel/head.S | 1
arch/unicore32/kernel/hibernate.c | 1
arch/unicore32/kernel/irq.c | 1
arch/unicore32/kernel/ksyms.c | 1
arch/unicore32/kernel/process.c | 1
arch/unicore32/kernel/traps.c | 1
arch/unicore32/mm/fault.c | 1
arch/unicore32/mm/flush.c | 1
21 files changed, 241 insertions(+), 174 deletions(-)
create mode 100644 arch/unicore32/include/asm/barrier.h
create mode 100644 arch/unicore32/include/asm/bug.h
create mode 100644 arch/unicore32/include/asm/cmpxchg.h
create mode 100644 arch/unicore32/include/asm/cr.h
create mode 100644 arch/unicore32/include/asm/exec.h
create mode 100644 arch/unicore32/include/asm/setup.h
create mode 100644 arch/unicore32/include/asm/switch_to.h
diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild
index ca113d6..24c686f 100644
--- a/arch/unicore32/include/asm/Kbuild
+++ b/arch/unicore32/include/asm/Kbuild
@@ -3,7 +3,6 @@ include include/asm-generic/Kbuild.asm
generic-y += atomic.h
generic-y += auxvec.h
generic-y += bitsperlong.h
-generic-y += bug.h
generic-y += bugs.h
generic-y += cputime.h
generic-y += current.h
@@ -38,7 +37,6 @@ generic-y += sections.h
generic-y += segment.h
generic-y += sembuf.h
generic-y += serial.h
-generic-y += setup.h
generic-y += shmbuf.h
generic-y += shmparam.h
generic-y += siginfo.h
diff --git a/arch/unicore32/include/asm/barrier.h b/arch/unicore32/include/asm/barrier.h
new file mode 100644
index 0000000..b7e5f82
--- /dev/null
+++ b/arch/unicore32/include/asm/barrier.h
@@ -0,0 +1,28 @@
+/*
+ * Memory barrier implementations for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UNICORE_BARRIER_H__
+#define __UNICORE_BARRIER_H__
+
+#define isb() __asm__ __volatile__ ("" : : : "memory")
+#define dsb() __asm__ __volatile__ ("" : : : "memory")
+#define dmb() __asm__ __volatile__ ("" : : : "memory")
+
+#define mb() barrier()
+#define rmb() barrier()
+#define wmb() barrier()
+#define smp_mb() barrier()
+#define smp_rmb() barrier()
+#define smp_wmb() barrier()
+#define read_barrier_depends() do { } while (0)
+#define smp_read_barrier_depends() do { } while (0)
+
+#define set_mb(var, value) do { var = value; smp_mb(); } while (0)
+
+#endif /* __UNICORE_BARRIER_H__ */
diff --git a/arch/unicore32/include/asm/bug.h b/arch/unicore32/include/asm/bug.h
new file mode 100644
index 0000000..8304b64
--- /dev/null
+++ b/arch/unicore32/include/asm/bug.h
@@ -0,0 +1,33 @@
+/*
+ * Bug handling for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UNICORE_BUG_H__
+#define __UNICORE_BUG_H__
+
+#include <linux/linkage.h>
+#include <asm/bug.h>
+
+struct pt_regs;
+struct siginfo;
+
+void die(const char *msg, struct pt_regs *regs, int err);
+
+void uc32_notify_die(const char *str, struct pt_regs *regs,
+ struct siginfo *info, unsigned long err, unsigned long trap);
+
+void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int,
+ struct pt_regs *),
+ int sig, int code, const char *name);
+
+extern asmlinkage void __backtrace(void);
+extern asmlinkage void c_backtrace(unsigned long fp, int pmode);
+
+extern void __show_regs(struct pt_regs *);
+
+#endif /* __UNICORE_BUG_H__ */
diff --git a/arch/unicore32/include/asm/cmpxchg.h b/arch/unicore32/include/asm/cmpxchg.h
new file mode 100644
index 0000000..2c36450
--- /dev/null
+++ b/arch/unicore32/include/asm/cmpxchg.h
@@ -0,0 +1,58 @@
+/*
+ * Atomics for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UNICORE_CMPXCHG_H__
+#define __UNICORE_CMPXCHG_H__
+
+static inline unsigned long
+__xchg(unsigned long x, volatile void *ptr, int size)
+{
+ unsigned long ret;
+
+ switch (size) {
+ case 1:
+ asm volatile("@ __xchg1\n"
+ " swapb %0, %1, [%2]"
+ : "=&r" (ret)
+ : "r" (x), "r" (ptr)
+ : "memory", "cc");
+ break;
+ case 4:
+ asm volatile("@ __xchg4\n"
+ " swapw %0, %1, [%2]"
+ : "=&r" (ret)
+ : "r" (x), "r" (ptr)
+ : "memory", "cc");
+ break;
+ default:
+ panic("xchg: bad data size: ptr 0x%p, size %d\n",
+ ptr, size);
+ }
+
+ return ret;
+}
+
+#define xchg(ptr, x) \
+ ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+
+#include <asm-generic/cmpxchg-local.h>
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+#define cmpxchg_local(ptr, o, n) \
+ ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \
+ (unsigned long)(o), (unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg64_local(ptr, o, n) \
+ __cmpxchg64_local_generic((ptr), (o), (n))
+
+#include <asm-generic/cmpxchg.h>
+
+#endif /* __UNICORE_CMPXCHG_H__ */
diff --git a/arch/unicore32/include/asm/cr.h b/arch/unicore32/include/asm/cr.h
new file mode 100644
index 0000000..96510a1
--- /dev/null
+++ b/arch/unicore32/include/asm/cr.h
@@ -0,0 +1,49 @@
+/*
+ * CR registed bits for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UNICORE_CR_H__
+#define __UNICORE_CR_H__
+
+/*
+ * CR1 bits (CP#0 CR1)
+ */
+#define CR_M (1 << 0) /* MMU enable */
+#define CR_A (1 << 1) /* Alignment abort enable */
+#define CR_D (1 << 2) /* Dcache enable */
+#define CR_I (1 << 3) /* Icache enable */
+#define CR_B (1 << 4) /* Dcache write mechanism: write back */
+#define CR_T (1 << 5) /* Burst enable */
+#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */
+
+#ifndef __ASSEMBLY__
+
+#define vectors_high() (cr_alignment & CR_V)
+
+extern unsigned long cr_no_alignment; /* defined in entry-unicore.S */
+extern unsigned long cr_alignment; /* defined in entry-unicore.S */
+
+static inline unsigned int get_cr(void)
+{
+ unsigned int val;
+ asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc");
+ return val;
+}
+
+static inline void set_cr(unsigned int val)
+{
+ asm volatile("movc p0.c1, %0, #0 @set CR"
+ : : "r" (val) : "cc");
+ isb();
+}
+
+extern void adjust_cr(unsigned long mask, unsigned long set);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __UNICORE_CR_H__ */
diff --git a/arch/unicore32/include/asm/exec.h b/arch/unicore32/include/asm/exec.h
new file mode 100644
index 0000000..ae707b3
--- /dev/null
+++ b/arch/unicore32/include/asm/exec.h
@@ -0,0 +1,15 @@
+/*
+ * Process execution bits for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UNICORE_EXEC_H__
+#define __UNICORE_EXEC_H__
+
+#define arch_align_stack(x) (x)
+
+#endif /* __UNICORE_EXEC_H__ */
diff --git a/arch/unicore32/include/asm/io.h b/arch/unicore32/include/asm/io.h
index adddf6d..39decb6 100644
--- a/arch/unicore32/include/asm/io.h
+++ b/arch/unicore32/include/asm/io.h
@@ -16,7 +16,6 @@
#include <asm/byteorder.h>
#include <asm/memory.h>
-#include <asm/system.h>
#define PCI_IOBASE PKUNITY_PCILIO_BASE
#include <asm-generic/io.h>
diff --git a/arch/unicore32/include/asm/pgtable.h b/arch/unicore32/include/asm/pgtable.h
index 68b2f29..71b5520 100644
--- a/arch/unicore32/include/asm/pgtable.h
+++ b/arch/unicore32/include/asm/pgtable.h
@@ -312,6 +312,9 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
#define pgtable_cache_init() do { } while (0)
+struct mm_struct;
+extern void show_pte(struct mm_struct *mm, unsigned long addr);
+
#endif /* !__ASSEMBLY__ */
#endif /* __UNICORE_PGTABLE_H__ */
diff --git a/arch/unicore32/include/asm/setup.h b/arch/unicore32/include/asm/setup.h
new file mode 100644
index 0000000..30d1e7a
--- /dev/null
+++ b/arch/unicore32/include/asm/setup.h
@@ -0,0 +1,18 @@
+/*
+ * Setup code for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UNICORE_SETUP_H__
+#define __UNICORE_SETUP_H__
+
+#include <asm-generic/setup.h>
+
+extern int cpu_architecture(void);
+extern void cpu_init(void);
+
+#endif /* __UNICORE_SETUP_H__ */
diff --git a/arch/unicore32/include/asm/switch_to.h b/arch/unicore32/include/asm/switch_to.h
new file mode 100644
index 0000000..db7a40c
--- /dev/null
+++ b/arch/unicore32/include/asm/switch_to.h
@@ -0,0 +1,30 @@
+/*
+ * Task switching for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UNICORE_SWITCH_TO_H__
+#define __UNICORE_SWITCH_TO_H__
+
+struct task_struct;
+struct thread_info;
+
+/*
+ * switch_to(prev, next) should switch from task `prev' to `next'
+ * `prev' will never be the same as `next'. schedule() itself
+ * contains the memory barrier to tell GCC not to cache `current'.
+ */
+extern struct task_struct *__switch_to(struct task_struct *,
+ struct thread_info *, struct thread_info *);
+
+#define switch_to(prev, next, last) \
+do { \
+ last = __switch_to(prev, \
+ task_thread_info(prev), task_thread_info(next)); \
+} while (0)
+
+#endif /* __UNICORE_SWITCH_TO_H__ */
diff --git a/arch/unicore32/include/asm/system.h b/arch/unicore32/include/asm/system.h
index 246b71c..cfc1498 100644
--- a/arch/unicore32/include/asm/system.h
+++ b/arch/unicore32/include/asm/system.h
@@ -1,161 +1,7 @@
-/*
- * linux/arch/unicore32/include/asm/system.h
- *
- * Code specific to PKUnity SoC and UniCore ISA
- *
- * Copyright (C) 2001-2010 GUAN Xue-tao
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __UNICORE_SYSTEM_H__
-#define __UNICORE_SYSTEM_H__
-
-#ifdef __KERNEL__
-
-/*
- * CR1 bits (CP#0 CR1)
- */
-#define CR_M (1 << 0) /* MMU enable */
-#define CR_A (1 << 1) /* Alignment abort enable */
-#define CR_D (1 << 2) /* Dcache enable */
-#define CR_I (1 << 3) /* Icache enable */
-#define CR_B (1 << 4) /* Dcache write mechanism: write back */
-#define CR_T (1 << 5) /* Burst enable */
-#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */
-
-#ifndef __ASSEMBLY__
-
-#include <linux/linkage.h>
-#include <linux/irqflags.h>
-
-struct thread_info;
-struct task_struct;
-
-struct pt_regs;
-
-void die(const char *msg, struct pt_regs *regs, int err);
-
-struct siginfo;
-void uc32_notify_die(const char *str, struct pt_regs *regs,
- struct siginfo *info, unsigned long err, unsigned long trap);
-
-void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int,
- struct pt_regs *),
- int sig, int code, const char *name);
-
-#define xchg(ptr, x) \
- ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
-
-extern asmlinkage void __backtrace(void);
-extern asmlinkage void c_backtrace(unsigned long fp, int pmode);
-
-struct mm_struct;
-extern void show_pte(struct mm_struct *mm, unsigned long addr);
-extern void __show_regs(struct pt_regs *);
-
-extern int cpu_architecture(void);
-extern void cpu_init(void);
-
-#define vectors_high() (cr_alignment & CR_V)
-
-#define isb() __asm__ __volatile__ ("" : : : "memory")
-#define dsb() __asm__ __volatile__ ("" : : : "memory")
-#define dmb() __asm__ __volatile__ ("" : : : "memory")
-
-#define mb() barrier()
-#define rmb() barrier()
-#define wmb() barrier()
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#define read_barrier_depends() do { } while (0)
-#define smp_read_barrier_depends() do { } while (0)
-
-#define set_mb(var, value) do { var = value; smp_mb(); } while (0)
-#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
-
-extern unsigned long cr_no_alignment; /* defined in entry-unicore.S */
-extern unsigned long cr_alignment; /* defined in entry-unicore.S */
-
-static inline unsigned int get_cr(void)
-{
- unsigned int val;
- asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc");
- return val;
-}
-
-static inline void set_cr(unsigned int val)
-{
- asm volatile("movc p0.c1, %0, #0 @set CR"
- : : "r" (val) : "cc");
- isb();
-}
-
-extern void adjust_cr(unsigned long mask, unsigned long set);
-
-/*
- * switch_to(prev, next) should switch from task `prev' to `next'
- * `prev' will never be the same as `next'. schedule() itself
- * contains the memory barrier to tell GCC not to cache `current'.
- */
-extern struct task_struct *__switch_to(struct task_struct *,
- struct thread_info *, struct thread_info *);
-extern void panic(const char *fmt, ...);
-
-#define switch_to(prev, next, last) \
-do { \
- last = __switch_to(prev, \
- task_thread_info(prev), task_thread_info(next)); \
-} while (0)
-
-static inline unsigned long
-__xchg(unsigned long x, volatile void *ptr, int size)
-{
- unsigned long ret;
-
- switch (size) {
- case 1:
- asm volatile("@ __xchg1\n"
- " swapb %0, %1, [%2]"
- : "=&r" (ret)
- : "r" (x), "r" (ptr)
- : "memory", "cc");
- break;
- case 4:
- asm volatile("@ __xchg4\n"
- " swapw %0, %1, [%2]"
- : "=&r" (ret)
- : "r" (x), "r" (ptr)
- : "memory", "cc");
- break;
- default:
- panic("xchg: bad data size: ptr 0x%p, size %d\n",
- ptr, size);
- }
-
- return ret;
-}
-
-#include <asm-generic/cmpxchg-local.h>
-
-/*
- * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
- * them available.
- */
-#define cmpxchg_local(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \
- (unsigned long)(o), (unsigned long)(n), sizeof(*(ptr))))
-#define cmpxchg64_local(ptr, o, n) \
- __cmpxchg64_local_generic((ptr), (o), (n))
-
-#include <asm-generic/cmpxchg.h>
-
-#endif /* __ASSEMBLY__ */
-
-#define arch_align_stack(x) (x)
-
-#endif /* __KERNEL__ */
-
-#endif
+/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */
+#include <asm/barrier.h>
+#include <asm/cmpxchg.h>
+#include <asm/cr.h>
+#include <asm/exec.h>
+#include <asm/setup.h>
+#include <asm/switch_to.h>
diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h
index 2acda50..897e11ad 100644
--- a/arch/unicore32/include/asm/uaccess.h
+++ b/arch/unicore32/include/asm/uaccess.h
@@ -16,7 +16,6 @@
#include <linux/errno.h>
#include <asm/memory.h>
-#include <asm/system.h>
#define __copy_from_user __copy_from_user
#define __copy_to_user __copy_to_user
diff --git a/arch/unicore32/kernel/dma.c b/arch/unicore32/kernel/dma.c
index ae441bc..ed2d4d7 100644
--- a/arch/unicore32/kernel/dma.c
+++ b/arch/unicore32/kernel/dma.c
@@ -18,7 +18,6 @@
#include <linux/errno.h>
#include <linux/io.h>
-#include <asm/system.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <mach/dma.h>
diff --git a/arch/unicore32/kernel/head.S b/arch/unicore32/kernel/head.S
index 8caf322..fb1eb5c 100644
--- a/arch/unicore32/kernel/head.S
+++ b/arch/unicore32/kernel/head.S
@@ -17,7 +17,6 @@
#include <generated/asm-offsets.h>
#include <asm/memory.h>
#include <asm/thread_info.h>
-#include <asm/system.h>
#include <asm/pgtable-hwdef.h>
#if (PHYS_OFFSET & 0x003fffff)
diff --git a/arch/unicore32/kernel/hibernate.c b/arch/unicore32/kernel/hibernate.c
index 7d0f0b7..d75ef8b 100644
--- a/arch/unicore32/kernel/hibernate.c
+++ b/arch/unicore32/kernel/hibernate.c
@@ -15,7 +15,6 @@
#include <linux/suspend.h>
#include <linux/bootmem.h>
-#include <asm/system.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
diff --git a/arch/unicore32/kernel/irq.c b/arch/unicore32/kernel/irq.c
index d4efa7d..0be5ccd 100644
--- a/arch/unicore32/kernel/irq.c
+++ b/arch/unicore32/kernel/irq.c
@@ -26,7 +26,6 @@
#include <linux/syscore_ops.h>
#include <linux/gpio.h>
-#include <asm/system.h>
#include <mach/hardware.h>
#include "setup.h"
diff --git a/arch/unicore32/kernel/ksyms.c b/arch/unicore32/kernel/ksyms.c
index d98bd81..d285d71 100644
--- a/arch/unicore32/kernel/ksyms.c
+++ b/arch/unicore32/kernel/ksyms.c
@@ -20,7 +20,6 @@
#include <linux/io.h>
#include <asm/checksum.h>
-#include <asm/system.h>
#include "ksyms.h"
diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c
index 52edc2b..1b3f152 100644
--- a/arch/unicore32/kernel/process.c
+++ b/arch/unicore32/kernel/process.c
@@ -34,7 +34,6 @@
#include <asm/cacheflush.h>
#include <asm/processor.h>
-#include <asm/system.h>
#include <asm/stacktrace.h>
#include "setup.h"
diff --git a/arch/unicore32/kernel/traps.c b/arch/unicore32/kernel/traps.c
index b9a2646..2054f0d 100644
--- a/arch/unicore32/kernel/traps.c
+++ b/arch/unicore32/kernel/traps.c
@@ -26,7 +26,6 @@
#include <linux/unistd.h>
#include <asm/cacheflush.h>
-#include <asm/system.h>
#include <asm/traps.h>
#include "setup.h"
diff --git a/arch/unicore32/mm/fault.c b/arch/unicore32/mm/fault.c
index 283aa4b..2eeb9c0 100644
--- a/arch/unicore32/mm/fault.c
+++ b/arch/unicore32/mm/fault.c
@@ -20,7 +20,6 @@
#include <linux/sched.h>
#include <linux/io.h>
-#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
diff --git a/arch/unicore32/mm/flush.c b/arch/unicore32/mm/flush.c
index 93478cc..6d4c096 100644
--- a/arch/unicore32/mm/flush.c
+++ b/arch/unicore32/mm/flush.c
@@ -14,7 +14,6 @@
#include <linux/pagemap.h>
#include <asm/cacheflush.h>
-#include <asm/system.h>
#include <asm/tlbflush.h>
void flush_cache_mm(struct mm_struct *mm)
--
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