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-rw-r--r--sysdeps/i386/nptl/tcb-access.h123
-rw-r--r--sysdeps/i386/nptl/tls.h108
2 files changed, 124 insertions, 107 deletions
diff --git a/sysdeps/i386/nptl/tcb-access.h b/sysdeps/i386/nptl/tcb-access.h
new file mode 100644
index 0000000000..6c6d561e39
--- /dev/null
+++ b/sysdeps/i386/nptl/tcb-access.h
@@ -0,0 +1,123 @@
+/* THREAD_* accessors. i386 version.
+ Copyright (C) 2002-2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* Read member of the thread descriptor directly. */
+#define THREAD_GETMEM(descr, member) \
+ ({ __typeof (descr->member) __value; \
+ _Static_assert (sizeof (__value) == 1 \
+ || sizeof (__value) == 4 \
+ || sizeof (__value) == 8, \
+ "size of per-thread data"); \
+ if (sizeof (__value) == 1) \
+ asm volatile ("movb %%gs:%P2,%b0" \
+ : "=q" (__value) \
+ : "0" (0), "i" (offsetof (struct pthread, member))); \
+ else if (sizeof (__value) == 4) \
+ asm volatile ("movl %%gs:%P1,%0" \
+ : "=r" (__value) \
+ : "i" (offsetof (struct pthread, member))); \
+ else /* 8 */ \
+ { \
+ asm volatile ("movl %%gs:%P1,%%eax\n\t" \
+ "movl %%gs:%P2,%%edx" \
+ : "=A" (__value) \
+ : "i" (offsetof (struct pthread, member)), \
+ "i" (offsetof (struct pthread, member) + 4)); \
+ } \
+ __value; })
+
+
+/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
+#define THREAD_GETMEM_NC(descr, member, idx) \
+ ({ __typeof (descr->member[0]) __value; \
+ _Static_assert (sizeof (__value) == 1 \
+ || sizeof (__value) == 4 \
+ || sizeof (__value) == 8, \
+ "size of per-thread data"); \
+ if (sizeof (__value) == 1) \
+ asm volatile ("movb %%gs:%P2(%3),%b0" \
+ : "=q" (__value) \
+ : "0" (0), "i" (offsetof (struct pthread, member[0])), \
+ "r" (idx)); \
+ else if (sizeof (__value) == 4) \
+ asm volatile ("movl %%gs:%P1(,%2,4),%0" \
+ : "=r" (__value) \
+ : "i" (offsetof (struct pthread, member[0])), \
+ "r" (idx)); \
+ else /* 8 */ \
+ { \
+ asm volatile ("movl %%gs:%P1(,%2,8),%%eax\n\t" \
+ "movl %%gs:4+%P1(,%2,8),%%edx" \
+ : "=&A" (__value) \
+ : "i" (offsetof (struct pthread, member[0])), \
+ "r" (idx)); \
+ } \
+ __value; })
+
+
+
+/* Set member of the thread descriptor directly. */
+#define THREAD_SETMEM(descr, member, value) \
+ ({ \
+ _Static_assert (sizeof (descr->member) == 1 \
+ || sizeof (descr->member) == 4 \
+ || sizeof (descr->member) == 8, \
+ "size of per-thread data"); \
+ if (sizeof (descr->member) == 1) \
+ asm volatile ("movb %b0,%%gs:%P1" : \
+ : "iq" (value), \
+ "i" (offsetof (struct pthread, member))); \
+ else if (sizeof (descr->member) == 4) \
+ asm volatile ("movl %0,%%gs:%P1" : \
+ : "ir" (value), \
+ "i" (offsetof (struct pthread, member))); \
+ else /* 8 */ \
+ { \
+ asm volatile ("movl %%eax,%%gs:%P1\n\t" \
+ "movl %%edx,%%gs:%P2" : \
+ : "A" ((uint64_t) cast_to_integer (value)), \
+ "i" (offsetof (struct pthread, member)), \
+ "i" (offsetof (struct pthread, member) + 4)); \
+ }})
+
+
+/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
+#define THREAD_SETMEM_NC(descr, member, idx, value) \
+ ({ \
+ _Static_assert (sizeof (descr->member[0]) == 1 \
+ || sizeof (descr->member[0]) == 4 \
+ || sizeof (descr->member[0]) == 8, \
+ "size of per-thread data"); \
+ if (sizeof (descr->member[0]) == 1) \
+ asm volatile ("movb %b0,%%gs:%P1(%2)" : \
+ : "iq" (value), \
+ "i" (offsetof (struct pthread, member)), \
+ "r" (idx)); \
+ else if (sizeof (descr->member[0]) == 4) \
+ asm volatile ("movl %0,%%gs:%P1(,%2,4)" : \
+ : "ir" (value), \
+ "i" (offsetof (struct pthread, member)), \
+ "r" (idx)); \
+ else /* 8 */ \
+ { \
+ asm volatile ("movl %%eax,%%gs:%P1(,%2,8)\n\t" \
+ "movl %%edx,%%gs:4+%P1(,%2,8)" : \
+ : "A" ((uint64_t) cast_to_integer (value)), \
+ "i" (offsetof (struct pthread, member)), \
+ "r" (idx)); \
+ }})
diff --git a/sysdeps/i386/nptl/tls.h b/sysdeps/i386/nptl/tls.h
index cfb27f5ccd..d010e14920 100644
--- a/sysdeps/i386/nptl/tls.h
+++ b/sysdeps/i386/nptl/tls.h
@@ -250,113 +250,7 @@ tls_fill_user_desc (union user_desc_init *desc,
REGISTER_THREAD_AREA (32, offsetof (struct user_regs_struct, xgs), 3) \
REGISTER_THREAD_AREA (64, 26 * 8, 3) /* x86-64's user_regs_struct->gs */
-
-/* Read member of the thread descriptor directly. */
-# define THREAD_GETMEM(descr, member) \
- ({ __typeof (descr->member) __value; \
- _Static_assert (sizeof (__value) == 1 \
- || sizeof (__value) == 4 \
- || sizeof (__value) == 8, \
- "size of per-thread data"); \
- if (sizeof (__value) == 1) \
- asm volatile ("movb %%gs:%P2,%b0" \
- : "=q" (__value) \
- : "0" (0), "i" (offsetof (struct pthread, member))); \
- else if (sizeof (__value) == 4) \
- asm volatile ("movl %%gs:%P1,%0" \
- : "=r" (__value) \
- : "i" (offsetof (struct pthread, member))); \
- else /* 8 */ \
- { \
- asm volatile ("movl %%gs:%P1,%%eax\n\t" \
- "movl %%gs:%P2,%%edx" \
- : "=A" (__value) \
- : "i" (offsetof (struct pthread, member)), \
- "i" (offsetof (struct pthread, member) + 4)); \
- } \
- __value; })
-
-
-/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
-# define THREAD_GETMEM_NC(descr, member, idx) \
- ({ __typeof (descr->member[0]) __value; \
- _Static_assert (sizeof (__value) == 1 \
- || sizeof (__value) == 4 \
- || sizeof (__value) == 8, \
- "size of per-thread data"); \
- if (sizeof (__value) == 1) \
- asm volatile ("movb %%gs:%P2(%3),%b0" \
- : "=q" (__value) \
- : "0" (0), "i" (offsetof (struct pthread, member[0])), \
- "r" (idx)); \
- else if (sizeof (__value) == 4) \
- asm volatile ("movl %%gs:%P1(,%2,4),%0" \
- : "=r" (__value) \
- : "i" (offsetof (struct pthread, member[0])), \
- "r" (idx)); \
- else /* 8 */ \
- { \
- asm volatile ("movl %%gs:%P1(,%2,8),%%eax\n\t" \
- "movl %%gs:4+%P1(,%2,8),%%edx" \
- : "=&A" (__value) \
- : "i" (offsetof (struct pthread, member[0])), \
- "r" (idx)); \
- } \
- __value; })
-
-
-
-/* Set member of the thread descriptor directly. */
-# define THREAD_SETMEM(descr, member, value) \
- ({ \
- _Static_assert (sizeof (descr->member) == 1 \
- || sizeof (descr->member) == 4 \
- || sizeof (descr->member) == 8, \
- "size of per-thread data"); \
- if (sizeof (descr->member) == 1) \
- asm volatile ("movb %b0,%%gs:%P1" : \
- : "iq" (value), \
- "i" (offsetof (struct pthread, member))); \
- else if (sizeof (descr->member) == 4) \
- asm volatile ("movl %0,%%gs:%P1" : \
- : "ir" (value), \
- "i" (offsetof (struct pthread, member))); \
- else /* 8 */ \
- { \
- asm volatile ("movl %%eax,%%gs:%P1\n\t" \
- "movl %%edx,%%gs:%P2" : \
- : "A" ((uint64_t) cast_to_integer (value)), \
- "i" (offsetof (struct pthread, member)), \
- "i" (offsetof (struct pthread, member) + 4)); \
- }})
-
-
-/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
-# define THREAD_SETMEM_NC(descr, member, idx, value) \
- ({ \
- _Static_assert (sizeof (descr->member[0]) == 1 \
- || sizeof (descr->member[0]) == 4 \
- || sizeof (descr->member[0]) == 8, \
- "size of per-thread data"); \
- if (sizeof (descr->member[0]) == 1) \
- asm volatile ("movb %b0,%%gs:%P1(%2)" : \
- : "iq" (value), \
- "i" (offsetof (struct pthread, member)), \
- "r" (idx)); \
- else if (sizeof (descr->member[0]) == 4) \
- asm volatile ("movl %0,%%gs:%P1(,%2,4)" : \
- : "ir" (value), \
- "i" (offsetof (struct pthread, member)), \
- "r" (idx)); \
- else /* 8 */ \
- { \
- asm volatile ("movl %%eax,%%gs:%P1(,%2,8)\n\t" \
- "movl %%edx,%%gs:4+%P1(,%2,8)" : \
- : "A" ((uint64_t) cast_to_integer (value)), \
- "i" (offsetof (struct pthread, member)), \
- "r" (idx)); \
- }})
-
+# include <tcb-access.h>
/* Set the stack guard field in TCB head. */
#define THREAD_SET_STACK_GUARD(value) \
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 19:14:16 +0000