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authorUlrich Drepper <drepper@redhat.com>2002-07-20 01:14:41 +0000
committerUlrich Drepper <drepper@redhat.com>2002-07-20 01:14:41 +0000
commit739d440d2a748be4b0139d4e5e0a566098abfcec (patch)
tree395d06a998290892d7d92568471adee8e1e4824f /linuxthreads/sysdeps
parent9df63767d4078fdaf90307f5aa153422f7ec0722 (diff)
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Update.
2002-07-19 Ulrich Drepper <drepper@redhat.com> * configure.in: Add test for __thread support in compiler. * config.h.in: Add HAVE___THREAD. * Makefile (headers): Remove errno.h, sys/errno.h, and bits/errno.h. * include/sys/errno.h: Moved to... * stdlib/sys/errno.h: ...here. New file. * stdlib/errno.h: New file. Moved from... * include/errno.h: ...here. Changed into an internal header defining libc-local things like __set_errno. * stdlib/Makefile (headers): Add errno.h, sys/errno.h, and bits/errno.h. * elf/dl-minimal.c: Include <tls.h>. Define errno as thread-local variable if USE_TLS && HAVE___THREAD. Don't define __errno_location either. * elf/rtld.c (_dl_start): Add code to initialize TLS for ld.so from... (_dl_start_final): ...here. Add code to initialize tls elements from bootstrap_map. * sysdeps/generic/errno-loc.c: Define errno as thread-local variable if USE_TLS && HAVE___THREAD. * sysdeps/generic/bits/errno.h: Remove __set_errno definition. * sysdeps/mach/hurd/bits/errno.h: Likewise. * sysdeps/standalone/arm/bits/errno.h: Likewise. * sysdeps/standalone/bits/errno.h: Likewise. * sysdeps/unix/bsd/bsd4.4/bits/errno.h: Likewise. * sysdeps/unix/sysv/aix/bits/errno.h: Likewise. * sysdeps/unix/sysv/hpux/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/hppa/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/errno.h: Likewise. * sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h: Likewise. * sysdeps/i386/dl-machine.c (elf_machine_rel) [RTLD_BOOTSTRAP]: Don't use GL(dl_rtld_map), use map parameter. * sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.S: Define errno in .tbss if USE_TLS && HAVE___THREAD. * sysdeps/unix/sysv/linux/i386/sysdep.h: Unify SETUP_PIC_REG definitions. If USE_TLS && HAVE___THREAD store errooor value using TLS code sequence. * sysdeps/unix/sysv/linux/i386/i686/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/getcwd.c: No real need to restore errno. * sysdeps/unix/sysv/linux/grantpt.c: Likewise. * sysdeps/unix/sysv/linux/internal_statvfs.c: Likewise. * sysdeps/unix/sysv/linux/msgctl.c: Likewise. * sysdeps/unix/sysv/linux/readv.c: Likewise. * sysdeps/unix/sysv/linux/writev.c: Likewise.
Diffstat (limited to 'linuxthreads/sysdeps')
-rw-r--r--linuxthreads/sysdeps/i386/i686/pt-machine.h2
-rw-r--r--linuxthreads/sysdeps/i386/pt-machine.h2
-rw-r--r--linuxthreads/sysdeps/i386/tls.h38
-rw-r--r--linuxthreads/sysdeps/i386/useldt.h4
4 files changed, 28 insertions, 18 deletions
diff --git a/linuxthreads/sysdeps/i386/i686/pt-machine.h b/linuxthreads/sysdeps/i386/i686/pt-machine.h
index 6b5b7afeee..4f3541cfb6 100644
--- a/linuxthreads/sysdeps/i386/i686/pt-machine.h
+++ b/linuxthreads/sysdeps/i386/i686/pt-machine.h
@@ -27,6 +27,7 @@
#endif
#include "kernel-features.h"
+#ifndef ASSEMBLER
extern long int testandset (int *spinlock);
extern int __compare_and_swap (long int *p, long int oldval, long int newval);
@@ -66,6 +67,7 @@ __compare_and_swap (long int *p, long int oldval, long int newval)
: "memory");
return ret;
}
+#endif
#if __ASSUME_LDT_WORKS > 0
#include "../useldt.h"
diff --git a/linuxthreads/sysdeps/i386/pt-machine.h b/linuxthreads/sysdeps/i386/pt-machine.h
index 5a758584da..ec92ce2418 100644
--- a/linuxthreads/sysdeps/i386/pt-machine.h
+++ b/linuxthreads/sysdeps/i386/pt-machine.h
@@ -22,6 +22,7 @@
#ifndef _PT_MACHINE_H
#define _PT_MACHINE_H 1
+#ifndef ASSEMBLER
#ifndef PT_EI
# define PT_EI extern inline
#endif
@@ -102,5 +103,6 @@ compare_and_swap_is_available (void)
Otherwise, it's a 486 or above and it has cmpxchg. */
return changed != 0;
}
+#endif /* ASSEMBLER */
#endif /* pt-machine.h */
diff --git a/linuxthreads/sysdeps/i386/tls.h b/linuxthreads/sysdeps/i386/tls.h
index c1bfd1bca8..44f947c9c6 100644
--- a/linuxthreads/sysdeps/i386/tls.h
+++ b/linuxthreads/sysdeps/i386/tls.h
@@ -20,9 +20,10 @@
#ifndef _TLS_H
#define _TLS_H
-#include <stddef.h>
+# include <pt-machine.h>
-#include <pt-machine.h>
+#ifndef ASSEMBLER
+# include <stddef.h>
/* Type for the dtv. */
typedef union dtv
@@ -39,56 +40,58 @@ typedef struct
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
} tcbhead_t;
+#endif
/* We can support TLS only if the floating-stack support is available. */
#if defined FLOATING_STACKS && defined HAVE_TLS_SUPPORT
-/* Get system call information. */
-# include <sysdep.h>
-
/* Signal that TLS support is available. */
# define USE_TLS 1
+# ifndef ASSEMBLER
+/* Get system call information. */
+# include <sysdep.h>
+
/* Get the thread descriptor definition. */
-# include <linuxthreads/descr.h>
+# include <linuxthreads/descr.h>
/* This is the size of the initial TCB. */
-# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
+# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
/* Alignment requirements for the initial TCB. */
-# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
+# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
/* This is the size of the TCB. */
-# define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct)
+# define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct)
/* Alignment requirements for the TCB. */
-# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
+# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
/* The TCB can have any size and the memory following the address the
thread pointer points to is unspecified. Allocate the TCB there. */
-# define TLS_TCB_AT_TP 1
+# define TLS_TCB_AT_TP 1
/* Install the dtv pointer. The pointer passed is to the element with
index -1 which contain the length. */
-# define INSTALL_DTV(descr, dtvp) \
+# define INSTALL_DTV(descr, dtvp) \
((tcbhead_t *) descr)->dtv = dtvp + 1
/* Install new dtv for current thread. */
-# define INSTALL_NEW_DTV(dtv) \
+# define INSTALL_NEW_DTV(dtv) \
({ struct _pthread_descr_struct *__descr; \
THREAD_SETMEM (__descr, p_header.data.dtvp, dtv); })
/* Return dtv of given thread descriptor. */
-# define GET_DTV(descr) \
+# define GET_DTV(descr) \
(((tcbhead_t *) descr)->dtv)
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(descr) \
+# define TLS_INIT_TP(descr) \
do { \
void *_descr = (descr); \
struct modify_ldt_ldt_s ldt_entry = \
@@ -116,10 +119,11 @@ typedef struct
/* Return the address of the dtv for the current thread. */
-# define THREAD_DTV() \
+# define THREAD_DTV() \
({ struct _pthread_descr_struct *__descr; \
THREAD_GETMEM (__descr, p_header.data.dtvp); })
-#endif /* FLOATING_STACKS && HAVE_TLS_SUPPORT */
+# endif /* FLOATING_STACKS && HAVE_TLS_SUPPORT */
+#endif /* __ASSEMBLER__ */
#endif /* tls.h */
diff --git a/linuxthreads/sysdeps/i386/useldt.h b/linuxthreads/sysdeps/i386/useldt.h
index 116e95d042..64a3b52123 100644
--- a/linuxthreads/sysdeps/i386/useldt.h
+++ b/linuxthreads/sysdeps/i386/useldt.h
@@ -1,6 +1,6 @@
/* Special definitions for ix86 machine using segment register based
thread descriptor.
- Copyright (C) 1998, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1998, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>.
@@ -19,6 +19,7 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#ifndef ASSEMBLER
#include <stddef.h> /* For offsetof. */
#include <stdlib.h> /* For abort(). */
@@ -198,6 +199,7 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
member))); \
} \
})
+#endif
/* We want the OS to assign stack addresses. */
#define FLOATING_STACKS 1