* [RFA] Make the prec support signal better[3/4] -- i386-linux
@ 2009-09-09 13:29 Hui Zhu
2009-09-09 13:45 ` Mark Kettenis
0 siblings, 1 reply; 3+ messages in thread
From: Hui Zhu @ 2009-09-09 13:29 UTC (permalink / raw)
To: gdb-patches ml; +Cc: Michael Snyder
[-- Attachment #1: Type: text/plain, Size: 3754 bytes --]
This patch make i386-linux support signal record.
When signal happen, i386_linux_record_signal will record the change.
When the signal handler want return, new code in
"i386_linux_intx80_sysenter_record" will record the change.
2009-09-09 Michael Snyder <msnyder@vmware.com>
Hui Zhu <teawater@gmail.com>
* i386-linux-tdep.c (i386_all_but_ip_registers_record): New
function.
(i386_linux_intx80_sysenter_record): Call
i386_all_but_ip_registers_record if syscall is sys_sigreturn
or sys_rt_sigreturn.
(i386_linux_signal_stack): New enum.
(i386_linux_record_signal): New function.
(i386_linux_init_abi): Call set_gdbarch_process_record_signal.
---
i386-linux-tdep.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
--- a/i386-linux-tdep.c
+++ b/i386-linux-tdep.c
@@ -354,6 +354,33 @@ i386_linux_write_pc (struct regcache *re
regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
}
+/* Record all registers for process-record. */
+
+static int
+i386_all_but_ip_registers_record (struct regcache *regcache)
+{
+ if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ECX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EFLAGS_REGNUM))
+ return -1;
+
+ return 0;
+}
+
static struct linux_record_tdep i386_linux_record_tdep;
/* i386_canonicalize_syscall maps from the native i386 Linux set
@@ -388,6 +415,14 @@ i386_linux_intx80_sysenter_record (struc
regcache_raw_read_signed (regcache, I386_EAX_REGNUM, &syscall_native);
+ if (syscall_native == 119 || syscall_native == 173)
+ {
+ /* sys_sigreturn sys_rt_sigreturn */
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+ return 0;
+ }
+
syscall_gdb = i386_canonicalize_syscall (syscall_native);
if (syscall_gdb < 0)
@@ -409,6 +444,41 @@ i386_linux_intx80_sysenter_record (struc
return 0;
}
+
+enum i386_linux_signal_stack {
+ xstate = 270,
+ frame_size = 732,
+};
+
+int
+i386_linux_record_signal (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ enum target_signal signal)
+{
+ ULONGEST esp;
+
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+
+ if (record_arch_list_add_reg (regcache, I386_EIP_REGNUM))
+ return -1;
+
+ /* Record the change in the stack. */
+ regcache_raw_read_unsigned (regcache, I386_ESP_REGNUM, &esp);
+ /* This is for xstate.
+ sp -= sizeof (struct _fpstate); */
+ esp -= xstate;
+ /* This is for frame_size.
+ sp -= sizeof (struct rt_sigframe); */
+ esp -= frame_size;
+ if (record_arch_list_add_mem (esp, xstate + frame_size))
+ return -1;
+
+ if (record_arch_list_add_end ())
+ return -1;
+
+ return 0;
+}
/* The register sets used in GNU/Linux ELF core-dumps are identical to
@@ -504,6 +574,7 @@ i386_linux_init_abi (struct gdbarch_info
tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
set_gdbarch_process_record (gdbarch, i386_process_record);
+ set_gdbarch_process_record_signal (gdbarch, i386_linux_record_signal);
/* Initialize the i386_linux_record_tdep. */
/* These values are the size of the type that will be used in a system
[-- Attachment #2: prec-support-signal-i386-linux.txt --]
[-- Type: text/plain, Size: 3106 bytes --]
---
i386-linux-tdep.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
--- a/i386-linux-tdep.c
+++ b/i386-linux-tdep.c
@@ -354,6 +354,33 @@ i386_linux_write_pc (struct regcache *re
regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
}
+/* Record all registers for process-record. */
+
+static int
+i386_all_but_ip_registers_record (struct regcache *regcache)
+{
+ if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ECX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EFLAGS_REGNUM))
+ return -1;
+
+ return 0;
+}
+
static struct linux_record_tdep i386_linux_record_tdep;
/* i386_canonicalize_syscall maps from the native i386 Linux set
@@ -388,6 +415,14 @@ i386_linux_intx80_sysenter_record (struc
regcache_raw_read_signed (regcache, I386_EAX_REGNUM, &syscall_native);
+ if (syscall_native == 119 || syscall_native == 173)
+ {
+ /* sys_sigreturn sys_rt_sigreturn */
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+ return 0;
+ }
+
syscall_gdb = i386_canonicalize_syscall (syscall_native);
if (syscall_gdb < 0)
@@ -409,6 +444,41 @@ i386_linux_intx80_sysenter_record (struc
return 0;
}
+
+enum i386_linux_signal_stack {
+ xstate = 270,
+ frame_size = 732,
+};
+
+int
+i386_linux_record_signal (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ enum target_signal signal)
+{
+ ULONGEST esp;
+
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+
+ if (record_arch_list_add_reg (regcache, I386_EIP_REGNUM))
+ return -1;
+
+ /* Record the change in the stack. */
+ regcache_raw_read_unsigned (regcache, I386_ESP_REGNUM, &esp);
+ /* This is for xstate.
+ sp -= sizeof (struct _fpstate); */
+ esp -= xstate;
+ /* This is for frame_size.
+ sp -= sizeof (struct rt_sigframe); */
+ esp -= frame_size;
+ if (record_arch_list_add_mem (esp, xstate + frame_size))
+ return -1;
+
+ if (record_arch_list_add_end ())
+ return -1;
+
+ return 0;
+}
\f
/* The register sets used in GNU/Linux ELF core-dumps are identical to
@@ -504,6 +574,7 @@ i386_linux_init_abi (struct gdbarch_info
tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
set_gdbarch_process_record (gdbarch, i386_process_record);
+ set_gdbarch_process_record_signal (gdbarch, i386_linux_record_signal);
/* Initialize the i386_linux_record_tdep. */
/* These values are the size of the type that will be used in a system
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFA] Make the prec support signal better[3/4] -- i386-linux
2009-09-09 13:29 [RFA] Make the prec support signal better[3/4] -- i386-linux Hui Zhu
@ 2009-09-09 13:45 ` Mark Kettenis
2009-09-10 1:51 ` Hui Zhu
0 siblings, 1 reply; 3+ messages in thread
From: Mark Kettenis @ 2009-09-09 13:45 UTC (permalink / raw)
To: teawater; +Cc: gdb-patches, msnyder
> From: Hui Zhu <teawater@gmail.com>
> Date: Wed, 9 Sep 2009 21:29:07 +0800
>
> This patch make i386-linux support signal record.
> When signal happen, i386_linux_record_signal will record the change.
> When the signal handler want return, new code in
> "i386_linux_intx80_sysenter_record" will record the change.
>
> i386-linux-tdep.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 71 insertions(+)
>
> --- a/i386-linux-tdep.c
> +++ b/i386-linux-tdep.c
> @@ -354,6 +354,33 @@ i386_linux_write_pc (struct regcache *re
> regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
> }
>
> +/* Record all registers for process-record. */
Not quite true isn't it?
> +static int
> +i386_all_but_ip_registers_record (struct regcache *regcache)
> +{
> + if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_ECX_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_EDX_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_EBX_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_ESP_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_EBP_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_ESI_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_EDI_REGNUM))
> + return -1;
> + if (record_arch_list_add_reg (regcache, I386_EFLAGS_REGNUM))
> + return -1;
> +
> + return 0;
> +}
Why exactly is it that you're not recording the instruction pointer?
> static struct linux_record_tdep i386_linux_record_tdep;
>
> /* i386_canonicalize_syscall maps from the native i386 Linux set
> @@ -388,6 +415,14 @@ i386_linux_intx80_sysenter_record (struc
>
> regcache_raw_read_signed (regcache, I386_EAX_REGNUM, &syscall_native);
>
> + if (syscall_native == 119 || syscall_native == 173)
> + {
Ugh, magic numbers. We have symbolic constants for them isn't it?
Any reason not to use them?
> +enum i386_linux_signal_stack {
> + xstate = 270,
> + frame_size = 732,
> +};
IMHO, these should be #define's, spelled with all capitals and have
I386_LINUX_ prefixes.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFA] Make the prec support signal better[3/4] -- i386-linux
2009-09-09 13:45 ` Mark Kettenis
@ 2009-09-10 1:51 ` Hui Zhu
0 siblings, 0 replies; 3+ messages in thread
From: Hui Zhu @ 2009-09-10 1:51 UTC (permalink / raw)
To: Mark Kettenis; +Cc: gdb-patches, msnyder
[-- Attachment #1: Type: text/plain, Size: 6884 bytes --]
Thanks Mark.
On Wed, Sep 9, 2009 at 21:45, Mark Kettenis<mark.kettenis@xs4all.nl> wrote:
>> From: Hui Zhu <teawater@gmail.com>
>> Date: Wed, 9 Sep 2009 21:29:07 +0800
>>
>> This patch make i386-linux support signal record.
>> When signal happen, i386_linux_record_signal will record the change.
>> When the signal handler want return, new code in
>> "i386_linux_intx80_sysenter_record" will record the change.
>>
>> i386-linux-tdep.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> 1 file changed, 71 insertions(+)
>>
>> --- a/i386-linux-tdep.c
>> +++ b/i386-linux-tdep.c
>> @@ -354,6 +354,33 @@ i386_linux_write_pc (struct regcache *re
>> regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
>> }
>>
>> +/* Record all registers for process-record. */
>
> Not quite true isn't it?
I will update it.
>
>> +static int
>> +i386_all_but_ip_registers_record (struct regcache *regcache)
>> +{
>> + if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_ECX_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_EDX_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_EBX_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_ESP_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_EBP_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_ESI_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_EDI_REGNUM))
>> + return -1;
>> + if (record_arch_list_add_reg (regcache, I386_EFLAGS_REGNUM))
>> + return -1;
>> +
>> + return 0;
>> +}
>
> Why exactly is it that you're not recording the instruction pointer?
This is because this function will be called by
"i386_linux_intx80_sysenter_record", this function will be called by
i386_process_record, i386_process_record will record the ip when
return, so i386_linux_intx80_sysenter_record don't need record ip.
>
>> static struct linux_record_tdep i386_linux_record_tdep;
>>
>> /* i386_canonicalize_syscall maps from the native i386 Linux set
>> @@ -388,6 +415,14 @@ i386_linux_intx80_sysenter_record (struc
>>
>> regcache_raw_read_signed (regcache, I386_EAX_REGNUM, &syscall_native);
>>
>> + if (syscall_native == 119 || syscall_native == 173)
>> + {
>
> Ugh, magic numbers. We have symbolic constants for them isn't it?
> Any reason not to use them?
I will fix them.
>
>> +enum i386_linux_signal_stack {
>> + xstate = 270,
>> + frame_size = 732,
>> +};
>
> IMHO, these should be #define's, spelled with all capitals and have
> I386_LINUX_ prefixes.
>
I will fix them.
I make a new patch for it. Please help me with it.
Hui
2009-09-10 Michael Snyder <msnyder@vmware.com>
Hui Zhu <teawater@gmail.com>
* i386-linux-tdep.c (i386_all_but_ip_registers_record): New
function.
(i386_linux_intx80_sysenter_record): Call
i386_all_but_ip_registers_record if syscall is sys_sigreturn
or sys_rt_sigreturn.
(I386_LINUX_xstate, I386_LINUX_frame_size): New macros.
(i386_linux_record_signal): New function.
(i386_linux_init_abi): Call set_gdbarch_process_record_signal.
---
i386-linux-tdep.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 71 insertions(+), 1 deletion(-)
--- a/i386-linux-tdep.c
+++ b/i386-linux-tdep.c
@@ -354,7 +354,32 @@ i386_linux_write_pc (struct regcache *re
regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
}
-static struct linux_record_tdep i386_linux_record_tdep;
+/* Record all registers but IP register for process-record. */
+
+static int
+i386_all_but_ip_registers_record (struct regcache *regcache)
+{
+ if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ECX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EFLAGS_REGNUM))
+ return -1;
+
+ return 0;
+}
/* i386_canonicalize_syscall maps from the native i386 Linux set
of syscall ids into a canonical set of syscall ids used by
@@ -379,6 +404,8 @@ i386_canonicalize_syscall (int syscall)
Return -1 if something wrong. */
+static struct linux_record_tdep i386_linux_record_tdep;
+
static int
i386_linux_intx80_sysenter_record (struct regcache *regcache)
{
@@ -398,6 +425,14 @@ i386_linux_intx80_sysenter_record (struc
return -1;
}
+ if (syscall_gdb == gdb_sys_sigreturn
+ || syscall_gdb == gdb_sys_rt_sigreturn)
+ {
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+ return 0;
+ }
+
ret = record_linux_system_call (syscall_gdb, regcache,
&i386_linux_record_tdep);
if (ret)
@@ -409,6 +444,40 @@ i386_linux_intx80_sysenter_record (struc
return 0;
}
+
+#define I386_LINUX_xstate 270
+#define I386_LINUX_frame_size 732
+
+int
+i386_linux_record_signal (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ enum target_signal signal)
+{
+ ULONGEST esp;
+
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+
+ if (record_arch_list_add_reg (regcache, I386_EIP_REGNUM))
+ return -1;
+
+ /* Record the change in the stack. */
+ regcache_raw_read_unsigned (regcache, I386_ESP_REGNUM, &esp);
+ /* This is for xstate.
+ sp -= sizeof (struct _fpstate); */
+ esp -= I386_LINUX_xstate;
+ /* This is for frame_size.
+ sp -= sizeof (struct rt_sigframe); */
+ esp -= I386_LINUX_frame_size;
+ if (record_arch_list_add_mem (esp,
+ I386_LINUX_xstate + I386_LINUX_frame_size))
+ return -1;
+
+ if (record_arch_list_add_end ())
+ return -1;
+
+ return 0;
+}
/* The register sets used in GNU/Linux ELF core-dumps are identical to
@@ -504,6 +573,7 @@ i386_linux_init_abi (struct gdbarch_info
tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
set_gdbarch_process_record (gdbarch, i386_process_record);
+ set_gdbarch_process_record_signal (gdbarch, i386_linux_record_signal);
/* Initialize the i386_linux_record_tdep. */
/* These values are the size of the type that will be used in a system
[-- Attachment #2: prec-support-signal-i386-linux.txt --]
[-- Type: text/plain, Size: 3460 bytes --]
---
i386-linux-tdep.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 71 insertions(+), 1 deletion(-)
--- a/i386-linux-tdep.c
+++ b/i386-linux-tdep.c
@@ -354,7 +354,32 @@ i386_linux_write_pc (struct regcache *re
regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
}
-static struct linux_record_tdep i386_linux_record_tdep;
+/* Record all registers but IP register for process-record. */
+
+static int
+i386_all_but_ip_registers_record (struct regcache *regcache)
+{
+ if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ECX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBX_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EBP_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_ESI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EDI_REGNUM))
+ return -1;
+ if (record_arch_list_add_reg (regcache, I386_EFLAGS_REGNUM))
+ return -1;
+
+ return 0;
+}
/* i386_canonicalize_syscall maps from the native i386 Linux set
of syscall ids into a canonical set of syscall ids used by
@@ -379,6 +404,8 @@ i386_canonicalize_syscall (int syscall)
Return -1 if something wrong. */
+static struct linux_record_tdep i386_linux_record_tdep;
+
static int
i386_linux_intx80_sysenter_record (struct regcache *regcache)
{
@@ -398,6 +425,14 @@ i386_linux_intx80_sysenter_record (struc
return -1;
}
+ if (syscall_gdb == gdb_sys_sigreturn
+ || syscall_gdb == gdb_sys_rt_sigreturn)
+ {
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+ return 0;
+ }
+
ret = record_linux_system_call (syscall_gdb, regcache,
&i386_linux_record_tdep);
if (ret)
@@ -409,6 +444,40 @@ i386_linux_intx80_sysenter_record (struc
return 0;
}
+
+#define I386_LINUX_xstate 270
+#define I386_LINUX_frame_size 732
+
+int
+i386_linux_record_signal (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ enum target_signal signal)
+{
+ ULONGEST esp;
+
+ if (i386_all_but_ip_registers_record (regcache))
+ return -1;
+
+ if (record_arch_list_add_reg (regcache, I386_EIP_REGNUM))
+ return -1;
+
+ /* Record the change in the stack. */
+ regcache_raw_read_unsigned (regcache, I386_ESP_REGNUM, &esp);
+ /* This is for xstate.
+ sp -= sizeof (struct _fpstate); */
+ esp -= I386_LINUX_xstate;
+ /* This is for frame_size.
+ sp -= sizeof (struct rt_sigframe); */
+ esp -= I386_LINUX_frame_size;
+ if (record_arch_list_add_mem (esp,
+ I386_LINUX_xstate + I386_LINUX_frame_size))
+ return -1;
+
+ if (record_arch_list_add_end ())
+ return -1;
+
+ return 0;
+}
\f
/* The register sets used in GNU/Linux ELF core-dumps are identical to
@@ -504,6 +573,7 @@ i386_linux_init_abi (struct gdbarch_info
tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
set_gdbarch_process_record (gdbarch, i386_process_record);
+ set_gdbarch_process_record_signal (gdbarch, i386_linux_record_signal);
/* Initialize the i386_linux_record_tdep. */
/* These values are the size of the type that will be used in a system
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-09-09 13:29 [RFA] Make the prec support signal better[3/4] -- i386-linux Hui Zhu
2009-09-09 13:45 ` Mark Kettenis
2009-09-10 1:51 ` Hui Zhu
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