Remove CALL_THREAD_FCT macro

This patch removes CALL_THREAD_FCT macro usage and its defition for
x86.  For 32 bits it usage is only for force 16 stack alignment,
however stack is already explicit aligned in clone syscall.  For
64 bits and x32 it just a function call and there is no need to
code it with inline assembly.

Checked on i686-linux-gnu, x86_64-linux-gnu, and x86_64-linux-gnu-x32.

	* nptl/pthread_create.c (START_THREAD_DEFN): Remove
	CALL_THREAD_FCT macro usage.
	* sysdeps/i386/nptl/tls.h (CALL_THREAD_FCT): Remove definition.
	* sysdeps/x86_64/nptl/tls.h (CALL_THREAD_FCT): Likewise.
	* sysdeps/x86_64/32/nptl/tls.h: Remove file.

diff --git a/ChangeLog b/ChangeLog
index 13ee0255324b672ca3202bcdcae31f8518aa5c34..37a7625a8386d2c2eb344ee9200fa64cde82fe4e 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2017-04-04  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+       * nptl/pthread_create.c (START_THREAD_DEFN): Remove
+       CALL_THREAD_FCT macro usage.
+       * sysdeps/i386/nptl/tls.h (CALL_THREAD_FCT): Remove definition.
+       * sysdeps/x86_64/nptl/tls.h (CALL_THREAD_FCT): Likewise.
+       * sysdeps/x86_64/32/nptl/tls.h: Remove file.
+
        * nptl/pthreadP.h (USE_REQUEUE_PI): Remove ununsed macro.
        * sysdeps/unix/sysv/linux/arm/kernel-features.h
        (__ASSUME_REQUEUE_PI): Likewise.

diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c
index 2ef2bcb18401901a4d1b17f723ba9d89576e6481..d0d74149d327241c85b3a3929ba2587a2065499a 100644 (file)
--- a/nptl/pthread_create.c
+++ b/nptl/pthread_create.c
@@ -452,11 +452,7 @@ START_THREAD_DEFN
       LIBC_PROBE (pthread_start, 3, (pthread_t) pd, pd->start_routine, pd->arg);
 
       /* Run the code the user provided.  */
-#ifdef CALL_THREAD_FCT
-      THREAD_SETMEM (pd, result, CALL_THREAD_FCT (pd));
-#else
       THREAD_SETMEM (pd, result, pd->start_routine (pd->arg));
-#endif
     }
 
   /* Call destructors for the thread_local TLS variables.  */

diff --git a/sysdeps/i386/nptl/tls.h b/sysdeps/i386/nptl/tls.h
index 04dc6aef9151ae4acb81a4956baa459b366922a0..f9a6b11ecf3df941593d79b9d0822bdbdeb6dbf8 100644 (file)
--- a/sysdeps/i386/nptl/tls.h
+++ b/sysdeps/i386/nptl/tls.h
@@ -394,22 +394,6 @@ tls_fill_user_desc (union user_desc_init *desc,
              abort (); })
 
 
-/* Call the user-provided thread function.  */
-#define CALL_THREAD_FCT(descr) \
-  ({ void *__res;                                                            \
-     int __ignore1, __ignore2;                                               \
-     asm volatile ("pushl %%eax\n\t"                                         \
-                  "pushl %%eax\n\t"                                          \
-                  "pushl %%eax\n\t"                                          \
-                  "pushl %%gs:%P4\n\t"                                       \
-                  "call *%%gs:%P3\n\t"                                       \
-                  "addl $16, %%esp"                                          \
-                  : "=a" (__res), "=c" (__ignore1), "=d" (__ignore2)         \
-                  : "i" (offsetof (struct pthread, start_routine)),          \
-                    "i" (offsetof (struct pthread, arg)));                   \
-     __res; })
-
-
 /* Set the stack guard field in TCB head.  */
 #define THREAD_SET_STACK_GUARD(value) \
   THREAD_SETMEM (THREAD_SELF, header.stack_guard, value)

diff --git a/sysdeps/x86_64/nptl/tls.h b/sysdeps/x86_64/nptl/tls.h
index 53b41bc84f85611a1c8fd0a2c874417d386f9a40..9b8ad82550f9ed719a5a18cf16c5b9fc346cdd28 100644 (file)
--- a/sysdeps/x86_64/nptl/tls.h
+++ b/sysdeps/x86_64/nptl/tls.h
@@ -326,18 +326,6 @@ typedef struct
              abort (); })
 
 
-# define CALL_THREAD_FCT(descr) \
-  ({ void *__res;                                                            \
-     asm volatile ("movq %%fs:%P2, %%rdi\n\t"                                \
-                  "callq *%%fs:%P1"                                          \
-                  : "=a" (__res)                                             \
-                  : "i" (offsetof (struct pthread, start_routine)),          \
-                    "i" (offsetof (struct pthread, arg))                     \
-                  : "di", "si", "cx", "dx", "r8", "r9", "r10", "r11",        \
-                    "memory", "cc");                                         \
-     __res; })
-
-
 /* Set the stack guard field in TCB head.  */
 # define THREAD_SET_STACK_GUARD(value) \
     THREAD_SETMEM (THREAD_SELF, header.stack_guard, value)

diff --git a/sysdeps/x86_64/x32/nptl/tls.h b/sysdeps/x86_64/x32/nptl/tls.h
deleted file mode 100644 (file)
index 68f65a6..0000000
--- a/sysdeps/x86_64/x32/nptl/tls.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/* Definition for thread-local data handling.  nptl/x32 version.
-   Copyright (C) 2012-2017 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
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _X32_TLS_H
-#define _X32_TLS_H     1
-
-#include_next <tls.h>
-
-#ifndef __ASSEMBLER__
-
-/* X32 doesn't support 32-bit indirect calls via memory.  Instead, we
-   load the 32-bit address from memory into the lower 32 bits of the
-   return-value register, which will automatically zero-extend the upper
-   32 bits of the return-value register.  We then do the indirect call
-   via the 64-bit return-value register.  */
-# undef CALL_THREAD_FCT
-# define CALL_THREAD_FCT(descr) \
-  ({ void *__res;                                                            \
-     asm volatile ("movl %%fs:%P2, %%edi\n\t"                                \
-                  "movl %%fs:%P1, %k0\n\t"                                   \
-                  "callq *%q0"                                               \
-                  : "=a" (__res)                                             \
-                  : "i" (offsetof (struct pthread, start_routine)),          \
-                    "i" (offsetof (struct pthread, arg))                     \
-                  : "di", "si", "cx", "dx", "r8", "r9", "r10", "r11",        \
-                    "memory", "cc");                                         \
-     __res; })
-
-#endif /* __ASSEMBLER__ */
-
-#endif /* x32/tls.h */