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commit 23c77f60181eb549f11ec2f913b4270af29eee38
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Fri Dec 3 16:28:07 2021 +0100
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nptl: Increase default TCB alignment to 32
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rseq support will use a 32-byte aligned field in struct pthread,
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so the whole struct needs to have at least that alignment.
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nptl/tst-tls3mod.c uses TCB_ALIGNMENT, therefore include <descr.h>
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to obtain the fallback definition.
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Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
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diff --git a/nptl/descr.h b/nptl/descr.h
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index 4de84138fb960fa4..57be5b4fef564b36 100644
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--- a/nptl/descr.h
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+++ b/nptl/descr.h
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@@ -37,7 +37,9 @@
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#include <tls-internal-struct.h>
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#ifndef TCB_ALIGNMENT
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-# define TCB_ALIGNMENT sizeof (double)
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+# define TCB_ALIGNMENT 32
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+#elif TCB_ALIGNMENT < 32
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+# error TCB_ALIGNMENT must be at least 32
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#endif
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diff --git a/nptl/tst-tls3mod.c b/nptl/tst-tls3mod.c
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index cfd13aace1affcd5..77dcc550fc3b5017 100644
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--- a/nptl/tst-tls3mod.c
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+++ b/nptl/tst-tls3mod.c
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@@ -24,6 +24,7 @@
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#include <stdlib.h>
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#include <unistd.h>
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#include <pthreaddef.h>
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+#include <descr.h>
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extern pthread_barrier_t b;
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diff --git a/sysdeps/aarch64/nptl/pthreaddef.h b/sysdeps/aarch64/nptl/pthreaddef.h
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index 4d5ecf6661fd0fe6..8d9a10622d132a7a 100644
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--- a/sysdeps/aarch64/nptl/pthreaddef.h
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+++ b/sysdeps/aarch64/nptl/pthreaddef.h
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@@ -28,8 +28,5 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/alpha/nptl/pthreaddef.h b/sysdeps/alpha/nptl/pthreaddef.h
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index 25edb5093e095548..660e5694a25ec60f 100644
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--- a/sysdeps/alpha/nptl/pthreaddef.h
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+++ b/sysdeps/alpha/nptl/pthreaddef.h
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@@ -27,8 +27,5 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 4096
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/arc/nptl/pthreaddef.h b/sysdeps/arc/nptl/pthreaddef.h
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index 873b9d149ac46a62..d4dbe9e079445353 100644
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--- a/sysdeps/arc/nptl/pthreaddef.h
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+++ b/sysdeps/arc/nptl/pthreaddef.h
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@@ -28,8 +28,5 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 4
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/arm/nptl/pthreaddef.h b/sysdeps/arm/nptl/pthreaddef.h
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index 332f4079c4c3f2bf..13769f5ae270b0ca 100644
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--- a/sysdeps/arm/nptl/pthreaddef.h
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+++ b/sysdeps/arm/nptl/pthreaddef.h
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@@ -28,9 +28,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame.
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diff --git a/sysdeps/csky/nptl/pthreaddef.h b/sysdeps/csky/nptl/pthreaddef.h
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index e78bc0016b43b450..7dde9131b9b1a6b0 100644
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--- a/sysdeps/csky/nptl/pthreaddef.h
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+++ b/sysdeps/csky/nptl/pthreaddef.h
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@@ -28,8 +28,5 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 8
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/ia64/nptl/pthreaddef.h b/sysdeps/ia64/nptl/pthreaddef.h
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index 3a0f6daf9ad871aa..c7420fd1e4ee6081 100644
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--- a/sysdeps/ia64/nptl/pthreaddef.h
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+++ b/sysdeps/ia64/nptl/pthreaddef.h
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@@ -30,9 +30,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 16384
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __stack_pointer
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diff --git a/sysdeps/m68k/nptl/pthreaddef.h b/sysdeps/m68k/nptl/pthreaddef.h
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index 13e785a86bbf47b4..ce9511cb02da69fd 100644
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--- a/sysdeps/m68k/nptl/pthreaddef.h
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+++ b/sysdeps/m68k/nptl/pthreaddef.h
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@@ -28,9 +28,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/microblaze/nptl/pthreaddef.h b/sysdeps/microblaze/nptl/pthreaddef.h
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index 517157444da556ad..19d7235782afde53 100644
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--- a/sysdeps/microblaze/nptl/pthreaddef.h
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+++ b/sysdeps/microblaze/nptl/pthreaddef.h
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@@ -31,8 +31,5 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/mips/nptl/pthreaddef.h b/sysdeps/mips/nptl/pthreaddef.h
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index a7bccef6e512438f..322591c293ce5e15 100644
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--- a/sysdeps/mips/nptl/pthreaddef.h
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+++ b/sysdeps/mips/nptl/pthreaddef.h
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@@ -27,9 +27,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/nios2/nptl/pthreaddef.h b/sysdeps/nios2/nptl/pthreaddef.h
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index e01a0e6df72c089a..aa0709d0dc69f251 100644
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--- a/sysdeps/nios2/nptl/pthreaddef.h
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+++ b/sysdeps/nios2/nptl/pthreaddef.h
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@@ -28,8 +28,5 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 4
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/powerpc/nptl/pthreaddef.h b/sysdeps/powerpc/nptl/pthreaddef.h
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index ef5310e6315fde2c..117c35229ea68f48 100644
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--- a/sysdeps/powerpc/nptl/pthreaddef.h
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+++ b/sysdeps/powerpc/nptl/pthreaddef.h
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@@ -28,9 +28,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 4096
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/riscv/nptl/pthreaddef.h b/sysdeps/riscv/nptl/pthreaddef.h
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index 7bf93d6a63fdecd2..0f33cc48fe4fc728 100644
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--- a/sysdeps/riscv/nptl/pthreaddef.h
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+++ b/sysdeps/riscv/nptl/pthreaddef.h
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@@ -28,8 +28,5 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/s390/nptl/pthreaddef.h b/sysdeps/s390/nptl/pthreaddef.h
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index 091f82df24a4024c..0e32bd862f7fea48 100644
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--- a/sysdeps/s390/nptl/pthreaddef.h
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+++ b/sysdeps/s390/nptl/pthreaddef.h
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@@ -28,9 +28,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/sh/nptl/pthreaddef.h b/sysdeps/sh/nptl/pthreaddef.h
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index 3fa3d189ef969c90..f4e3a290df4ee6e6 100644
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--- a/sysdeps/sh/nptl/pthreaddef.h
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+++ b/sysdeps/sh/nptl/pthreaddef.h
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@@ -29,9 +29,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 8
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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diff --git a/sysdeps/sparc/sparc32/pthreaddef.h b/sysdeps/sparc/sparc32/pthreaddef.h
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index 6526fb3d6e7e1448..7a0a04789dac478e 100644
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--- a/sysdeps/sparc/sparc32/pthreaddef.h
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+++ b/sysdeps/sparc/sparc32/pthreaddef.h
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@@ -27,9 +27,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME (stack_pointer + (2 * 64))
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diff --git a/sysdeps/sparc/sparc64/pthreaddef.h b/sysdeps/sparc/sparc64/pthreaddef.h
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index 3da9d7afc8054598..103842856d40432b 100644
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--- a/sysdeps/sparc/sparc64/pthreaddef.h
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+++ b/sysdeps/sparc/sparc64/pthreaddef.h
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@@ -27,10 +27,6 @@
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 4096
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-/* Alignment requirement for TCB. */
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-#define TCB_ALIGNMENT 16
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-
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-
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME (stack_pointer + (2 * 128))
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register char *stack_pointer __asm__("%sp");
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