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author | Elliott Hughes <enh@google.com> | 2013-10-09 20:49:09 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2013-10-09 20:49:10 +0000 |
commit | 0c17099a71cb5d1b36b7aab66fd7341b3fc9106d (patch) | |
tree | 4753b74b87e713379965bb051482036e6726afb1 /libc | |
parent | 777a4ee6771e6fe3362ef4f24244a44fcd0aabe4 (diff) | |
parent | 2a0b873065edb304fa2d1c54f8de663ea638b8ab (diff) | |
download | bionic-0c17099a71cb5d1b36b7aab66fd7341b3fc9106d.zip bionic-0c17099a71cb5d1b36b7aab66fd7341b3fc9106d.tar.gz bionic-0c17099a71cb5d1b36b7aab66fd7341b3fc9106d.tar.bz2 |
Merge "Fix __errno for LP64 and clean up __get_tls."
Diffstat (limited to 'libc')
-rw-r--r-- | libc/Android.mk | 3 | ||||
-rw-r--r-- | libc/arch-mips/mips.mk | 1 | ||||
-rw-r--r-- | libc/arch-x86/bionic/__get_tls.c | 37 | ||||
-rw-r--r-- | libc/arch-x86/x86.mk | 1 | ||||
-rw-r--r-- | libc/arch-x86_64/x86_64.mk | 1 | ||||
-rw-r--r-- | libc/bionic/__errno.cpp (renamed from libc/bionic/__errno.c) | 7 | ||||
-rw-r--r-- | libc/bionic/__get_tls.cpp (renamed from libc/arch-x86_64/bionic/__get_tls.c) | 9 | ||||
-rw-r--r-- | libc/bionic/libc_init_dynamic.cpp | 2 | ||||
-rw-r--r-- | libc/bionic/pthread_create.cpp | 2 | ||||
-rw-r--r-- | libc/bionic/pthread_internals.cpp | 3 | ||||
-rw-r--r-- | libc/bionic/pthread_key.cpp | 7 | ||||
-rw-r--r-- | libc/private/__get_tls.h (renamed from libc/arch-mips/bionic/__get_tls.c) | 43 | ||||
-rw-r--r-- | libc/private/bionic_tls.h | 41 |
13 files changed, 55 insertions, 102 deletions
diff --git a/libc/Android.mk b/libc/Android.mk index f4fdb4c..72a655c 100644 --- a/libc/Android.mk +++ b/libc/Android.mk @@ -185,6 +185,7 @@ ifeq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),arm mips x86)) libc_common_src_files += \ bionic/fcntl.c \ bionic/fstatfs.c \ + bionic/__get_tls.cpp \ bionic/lseek64.c \ bionic/sigsuspend.c \ bionic/statfs.c \ @@ -217,7 +218,7 @@ libc_bionic_src_files := \ bionic/assert.cpp \ bionic/brk.cpp \ bionic/dirent.cpp \ - bionic/__errno.c \ + bionic/__errno.cpp \ bionic/eventfd_read.cpp \ bionic/eventfd_write.cpp \ bionic/futimens.cpp \ diff --git a/libc/arch-mips/mips.mk b/libc/arch-mips/mips.mk index fe57ee7..7a3c978 100644 --- a/libc/arch-mips/mips.mk +++ b/libc/arch-mips/mips.mk @@ -1,6 +1,5 @@ _LIBC_ARCH_COMMON_SRC_FILES := \ arch-mips/bionic/__get_sp.S \ - arch-mips/bionic/__get_tls.c \ arch-mips/bionic/__set_tls.c \ arch-mips/bionic/_exit_with_stack_teardown.S \ arch-mips/bionic/_setjmp.S \ diff --git a/libc/arch-x86/bionic/__get_tls.c b/libc/arch-x86/bionic/__get_tls.c deleted file mode 100644 index 5ac6e44..0000000 --- a/libc/arch-x86/bionic/__get_tls.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -/* see the implementation of __set_tls and pthread.c to understand this - * code. Basically, the content of gs:[0] always is a pointer to the base - * address of the tls region - */ -void* __get_tls(void) -{ - void* tls; - asm ( " movl %%gs:0, %0" : "=r"(tls) ); - return tls; -} diff --git a/libc/arch-x86/x86.mk b/libc/arch-x86/x86.mk index 395f0d4..4a63f5e 100644 --- a/libc/arch-x86/x86.mk +++ b/libc/arch-x86/x86.mk @@ -3,7 +3,6 @@ _LIBC_ARCH_COMMON_SRC_FILES := \ arch-x86/bionic/_exit_with_stack_teardown.S \ arch-x86/bionic/futex_x86.S \ arch-x86/bionic/__get_sp.S \ - arch-x86/bionic/__get_tls.c \ arch-x86/bionic/_setjmp.S \ arch-x86/bionic/setjmp.S \ arch-x86/bionic/__set_tls.c \ diff --git a/libc/arch-x86_64/x86_64.mk b/libc/arch-x86_64/x86_64.mk index d9c8f12..a1c1705 100644 --- a/libc/arch-x86_64/x86_64.mk +++ b/libc/arch-x86_64/x86_64.mk @@ -3,7 +3,6 @@ _LIBC_ARCH_COMMON_SRC_FILES := \ arch-x86_64/bionic/_exit_with_stack_teardown.S \ arch-x86_64/bionic/futex_x86_64.S \ arch-x86_64/bionic/__get_sp.S \ - arch-x86_64/bionic/__get_tls.c \ arch-x86_64/bionic/__rt_sigreturn.S \ arch-x86_64/bionic/_setjmp.S \ arch-x86_64/bionic/setjmp.S \ diff --git a/libc/bionic/__errno.c b/libc/bionic/__errno.cpp index 8f33cce..9caa618 100644 --- a/libc/bionic/__errno.c +++ b/libc/bionic/__errno.cpp @@ -25,10 +25,11 @@ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ + #include <errno.h> #include <bionic_tls.h> +#include <stdint.h> -volatile int* __errno( void ) -{ - return &((volatile int*)__get_tls())[TLS_SLOT_ERRNO]; +volatile int* __errno() { + return reinterpret_cast<int*>(&(__get_tls()[TLS_SLOT_ERRNO])); } diff --git a/libc/arch-x86_64/bionic/__get_tls.c b/libc/bionic/__get_tls.cpp index f21b6b8..d01e2aa 100644 --- a/libc/arch-x86_64/bionic/__get_tls.c +++ b/libc/bionic/__get_tls.cpp @@ -1,5 +1,5 @@ /* - * Copyright (C) 2013 The Android Open Source Project + * Copyright (C) 2008 The Android Open Source Project * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -26,8 +26,7 @@ * SUCH DAMAGE. */ -void* __get_tls(void) { - void* tls; - asm ("mov %%fs:0, %0" : "=r"(tls)); - return tls; +extern "C" void** __get_tls() { +#include "private/__get_tls.h" + return __get_tls(); } diff --git a/libc/bionic/libc_init_dynamic.cpp b/libc/bionic/libc_init_dynamic.cpp index 88e87a7..4e1374e 100644 --- a/libc/bionic/libc_init_dynamic.cpp +++ b/libc/bionic/libc_init_dynamic.cpp @@ -65,7 +65,7 @@ extern "C" { // as soon as the shared library is loaded. __attribute__((constructor)) static void __libc_preinit() { // Read the kernel argument block pointer from TLS. - void* tls = const_cast<void*>(__get_tls()); + void** tls = __get_tls(); KernelArgumentBlock** args_slot = &reinterpret_cast<KernelArgumentBlock**>(tls)[TLS_SLOT_BIONIC_PREINIT]; KernelArgumentBlock* args = *args_slot; diff --git a/libc/bionic/pthread_create.cpp b/libc/bionic/pthread_create.cpp index 63695d3..9e06afc 100644 --- a/libc/bionic/pthread_create.cpp +++ b/libc/bionic/pthread_create.cpp @@ -50,6 +50,8 @@ extern "C" int __pthread_clone(void* (*fn)(void*), void* child_stack, int flags, extern "C" void ATTRIBUTES _thread_created_hook(pid_t thread_id); +extern "C" int __set_tls(void* ptr); + static const int kPthreadInitFailed = 1; static pthread_mutex_t gPthreadStackCreationLock = PTHREAD_MUTEX_INITIALIZER; diff --git a/libc/bionic/pthread_internals.cpp b/libc/bionic/pthread_internals.cpp index 66bc5b7..59c6e48 100644 --- a/libc/bionic/pthread_internals.cpp +++ b/libc/bionic/pthread_internals.cpp @@ -64,6 +64,5 @@ __LIBC_ABI_PRIVATE__ void _pthread_internal_add(pthread_internal_t* thread) { } __LIBC_ABI_PRIVATE__ pthread_internal_t* __get_thread(void) { - void** tls = reinterpret_cast<void**>(const_cast<void*>(__get_tls())); - return reinterpret_cast<pthread_internal_t*>(tls[TLS_SLOT_THREAD_ID]); + return reinterpret_cast<pthread_internal_t*>(__get_tls()[TLS_SLOT_THREAD_ID]); } diff --git a/libc/bionic/pthread_key.cpp b/libc/bionic/pthread_key.cpp index 7e8b4cd..706758b 100644 --- a/libc/bionic/pthread_key.cpp +++ b/libc/bionic/pthread_key.cpp @@ -133,7 +133,7 @@ class ScopedTlsMapAccess { // from this thread's TLS area. This must call the destructor of all keys // that have a non-NULL data value and a non-NULL destructor. void CleanAll() { - void** tls = (void**)__get_tls(); + void** tls = __get_tls(); // Because destructors can do funky things like deleting/creating other // keys, we need to implement this in a loop. @@ -239,8 +239,7 @@ void* pthread_getspecific(pthread_key_t key) { // to check that the key is properly allocated. If the key was not // allocated, the value read from the TLS should always be NULL // due to pthread_key_delete() clearing the values for all threads. - uintptr_t address = reinterpret_cast<volatile uintptr_t*>(__get_tls())[key]; - return reinterpret_cast<void*>(address); + return __get_tls()[key]; } int pthread_setspecific(pthread_key_t key, const void* ptr) { @@ -250,6 +249,6 @@ int pthread_setspecific(pthread_key_t key, const void* ptr) { return EINVAL; } - reinterpret_cast<volatile uintptr_t*>(__get_tls())[key] = reinterpret_cast<uintptr_t>(ptr); + __get_tls()[key] = const_cast<void*>(ptr); return 0; } diff --git a/libc/arch-mips/bionic/__get_tls.c b/libc/private/__get_tls.h index d1cdf0e..5f9451d 100644 --- a/libc/arch-mips/bionic/__get_tls.c +++ b/libc/private/__get_tls.h @@ -25,13 +25,36 @@ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ -void* __get_tls(void) -{ - register void *tls asm("v1"); - asm (".set push\n\t" - ".set mips32r2\n\t" - "rdhwr %0,$29\n\t" - ".set pop" - : "=r"(tls)); - return tls; -} + +#ifndef __BIONIC_PRIVATE_GET_TLS_H_ +#define __BIONIC_PRIVATE_GET_TLS_H_ + +#if defined(__arm__) +# define __get_tls() \ + ({ void** __val; \ + __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r"(__val)); \ + __val; }) +#elif defined(__mips__) +# define __get_tls() \ + /* On mips32r1, this goes via a kernel illegal instruction trap that's optimized for v1. */ \ + ({ register void** __val asm("v1"); \ + __asm__(".set push\n" \ + ".set mips32r2\n" \ + "rdhwr %0,$29\n" \ + ".set pop\n" : "=r"(__val)); \ + __val; }) +#elif defined(__i386__) +# define __get_tls() \ + ({ void** __val; \ + __asm__("movl %%gs:0, %0" : "=r"(__val)); \ + __val; }) +#elif defined(__x86_64__) +# define __get_tls() \ + ({ void** __val; \ + __asm__("mov %%fs:0, %0" : "=r"(__val)); \ + __val; }) +#else +#error unsupported architecture +#endif + +#endif /* __BIONIC_PRIVATE_GET_TLS_H_ */ diff --git a/libc/private/bionic_tls.h b/libc/private/bionic_tls.h index 2e20364..a14bd3c 100644 --- a/libc/private/bionic_tls.h +++ b/libc/private/bionic_tls.h @@ -25,10 +25,12 @@ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ -#ifndef _SYS_TLS_H -#define _SYS_TLS_H + +#ifndef __BIONIC_PRIVATE_BIONIC_TLS_H_ +#define __BIONIC_PRIVATE_BIONIC_TLS_H_ #include <sys/cdefs.h> +#include "__get_tls.h" __BEGIN_DECLS @@ -83,39 +85,6 @@ enum { #define BIONIC_ALIGN(x, a) (((x) + (a - 1)) & ~(a - 1)) #define BIONIC_TLS_SLOTS BIONIC_ALIGN(128 + TLS_SLOT_FIRST_USER_SLOT + GLOBAL_INIT_THREAD_LOCAL_BUFFER_COUNT, 4) -/* syscall only, do not call directly */ -extern int __set_tls(void* ptr); - -/* get the TLS */ -#if defined(__arm__) -# define __get_tls() \ - ({ unsigned int __val; \ - asm ("mrc p15, 0, %0, c13, c0, 3" : "=r"(__val)); \ - (volatile void*) __val; }) -#elif defined(__mips__) -# define __get_tls() \ - /* On mips32r1, this goes via a kernel illegal instruction trap that's optimized for v1. */ \ - ({ register unsigned int __val asm("v1"); \ - asm (" .set push\n" \ - " .set mips32r2\n" \ - " rdhwr %0,$29\n" \ - " .set pop\n" : "=r"(__val)); \ - (volatile void*) __val; }) -#elif defined(__i386__) -# define __get_tls() \ - ({ void* __val; \ - asm ("movl %%gs:0, %0" : "=r"(__val)); \ - (volatile void*) __val; }) - -#elif defined(__x86_64__) -# define __get_tls() \ - ({ void* __val; \ - asm ("mov %%fs:0, %0" : "=r"(__val)); \ - (volatile void*) __val; }) -#else -#error unsupported architecture -#endif - __END_DECLS #if defined(__cplusplus) @@ -123,4 +92,4 @@ class KernelArgumentBlock; extern __LIBC_HIDDEN__ void __libc_init_tls(KernelArgumentBlock& args); #endif -#endif /* _SYS_TLS_H */ +#endif /* __BIONIC_PRIVATE_BIONIC_TLS_H_ */ |