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Subject[PATCH] Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
Date
Disintegrate asm/system.h for Unicore32. (Compilation successful)
The implementation details are not changed, but only splitted.
BTW, some codestyles are adjusted.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
---
arch/unicore32/include/asm/Kbuild | 1 -
arch/unicore32/include/asm/barrier.h | 28 +++++
arch/unicore32/include/asm/bug.h | 27 +++++
arch/unicore32/include/asm/cmpxchg.h | 58 +++++++++++
arch/unicore32/include/asm/exec.h | 15 +++
arch/unicore32/include/asm/hwdef-copro.h | 48 +++++++++
arch/unicore32/include/asm/io.h | 1 -
arch/unicore32/include/asm/switch_to.h | 30 ++++++
arch/unicore32/include/asm/system.h | 166 +-----------------------------
arch/unicore32/include/asm/uaccess.h | 1 -
arch/unicore32/kernel/dma.c | 1 -
arch/unicore32/kernel/head.S | 2 +-
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/setup.h | 3 +
arch/unicore32/kernel/traps.c | 1 -
arch/unicore32/mm/alignment.c | 2 +
arch/unicore32/mm/fault.c | 1 -
arch/unicore32/mm/flush.c | 1 -
arch/unicore32/mm/mm.h | 5 +
22 files changed, 222 insertions(+), 173 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/exec.h
create mode 100644 arch/unicore32/include/asm/hwdef-copro.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..34b789b 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
diff --git a/arch/unicore32/include/asm/barrier.h b/arch/unicore32/include/asm/barrier.h
new file mode 100644
index 0000000..a6620e5
--- /dev/null
+++ b/arch/unicore32/include/asm/barrier.h
@@ -0,0 +1,28 @@
+/*
+ * Memory barrier implementations for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2012 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..b1ff8ca
--- /dev/null
+++ b/arch/unicore32/include/asm/bug.h
@@ -0,0 +1,27 @@
+/*
+ * Bug handling for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2012 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 <asm-generic/bug.h>
+
+struct pt_regs;
+struct siginfo;
+
+extern void die(const char *msg, struct pt_regs *regs, int err);
+extern void uc32_notify_die(const char *str, struct pt_regs *regs,
+ struct siginfo *info, unsigned long err, unsigned long trap);
+
+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..37c431d
--- /dev/null
+++ b/arch/unicore32/include/asm/cmpxchg.h
@@ -0,0 +1,58 @@
+/*
+ * Atomics xchg/cmpxchg for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2012 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__
+
+extern void panic(const char *fmt, ...);
+
+static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
+ int size)
+{
+ unsigned long ret;
+
+ switch (size) {
+ case 1:
+ asm volatile("swapb %0, %1, [%2]"
+ : "=&r" (ret)
+ : "r" (x), "r" (ptr)
+ : "memory", "cc");
+ break;
+ case 4:
+ asm volatile("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/exec.h b/arch/unicore32/include/asm/exec.h
new file mode 100644
index 0000000..06d1f0f
--- /dev/null
+++ b/arch/unicore32/include/asm/exec.h
@@ -0,0 +1,15 @@
+/*
+ * Process execution bits for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2012 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/hwdef-copro.h b/arch/unicore32/include/asm/hwdef-copro.h
new file mode 100644
index 0000000..a3292f0
--- /dev/null
+++ b/arch/unicore32/include/asm/hwdef-copro.h
@@ -0,0 +1,48 @@
+/*
+ * Co-processor register definitions for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2012 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_HWDEF_COPRO_H__
+#define __UNICORE_HWDEF_COPRO_H__
+
+/*
+ * Control Register 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.S */
+extern unsigned long cr_alignment; /* defined in entry.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" : : "r" (val) : "cc");
+ isb();
+}
+
+extern void adjust_cr(unsigned long mask, unsigned long set);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __UNICORE_HWDEF_COPRO_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/switch_to.h b/arch/unicore32/include/asm/switch_to.h
new file mode 100644
index 0000000..39572d2
--- /dev/null
+++ b/arch/unicore32/include/asm/switch_to.h
@@ -0,0 +1,30 @@
+/*
+ * Task switching for PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2012 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..a7f4057 100644
--- a/arch/unicore32/include/asm/system.h
+++ b/arch/unicore32/include/asm/system.h
@@ -1,161 +1,5 @@
-/*
- * 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/exec.h>
+#include <asm/switch_to.h>
diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h
index 2acda50..897e11a 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..e8f0b98 100644
--- a/arch/unicore32/kernel/head.S
+++ b/arch/unicore32/kernel/head.S
@@ -17,7 +17,7 @@
#include <generated/asm-offsets.h>
#include <asm/memory.h>
#include <asm/thread_info.h>
-#include <asm/system.h>
+#include <asm/hwdef-copro.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/setup.h b/arch/unicore32/kernel/setup.h
index dcd1306..f239550 100644
--- a/arch/unicore32/kernel/setup.h
+++ b/arch/unicore32/kernel/setup.h
@@ -12,8 +12,11 @@
#ifndef __UNICORE_KERNEL_SETUP_H__
#define __UNICORE_KERNEL_SETUP_H__

+#include <asm/hwdef-copro.h>
+
extern void paging_init(void);
extern void puv3_core_init(void);
+extern void cpu_init(void);

extern void puv3_ps2_init(void);
extern void pci_puv3_preinit(void);
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/alignment.c b/arch/unicore32/mm/alignment.c
index 28f576d..de7dc5f 100644
--- a/arch/unicore32/mm/alignment.c
+++ b/arch/unicore32/mm/alignment.c
@@ -24,6 +24,8 @@
#include <asm/tlbflush.h>
#include <asm/unaligned.h>

+#include "mm.h"
+
#define CODING_BITS(i) (i & 0xe0000120)

#define LDST_P_BIT(i) (i & (1 << 28)) /* Preindex */
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)
diff --git a/arch/unicore32/mm/mm.h b/arch/unicore32/mm/mm.h
index 3296bca..05c7f53 100644
--- a/arch/unicore32/mm/mm.h
+++ b/arch/unicore32/mm/mm.h
@@ -9,6 +9,8 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#include <asm/hwdef-copro.h>
+
/* the upper-most page table pointer */
extern pmd_t *top_pmd;
extern int sysctl_overcommit_memory;
@@ -34,6 +36,9 @@ struct mem_type {
const struct mem_type *get_mem_type(unsigned int type);

extern void __flush_dcache_page(struct address_space *, struct page *);
+extern void hook_fault_code(int nr, int (*fn)
+ (unsigned long, unsigned int, struct pt_regs *),
+ int sig, int code, const char *name);

void __init bootmem_init(void);
void uc32_mm_memblock_reserve(void);
--
1.7.0.4


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