diff options
Diffstat (limited to 'linuxthreads/sysdeps/i386/tls.h')
| -rw-r--r-- | linuxthreads/sysdeps/i386/tls.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/i386/tls.h b/linuxthreads/sysdeps/i386/tls.h index c244801bf4..761a8ca943 100644 --- a/linuxthreads/sysdeps/i386/tls.h +++ b/linuxthreads/sysdeps/i386/tls.h @@ -20,10 +20,12 @@ #ifndef _TLS_H #define _TLS_H +# include <dl-sysdep.h> # include <pt-machine.h> #ifndef __ASSEMBLER__ # include <stddef.h> +# include <stdint.h> /* Type for the dtv. */ typedef union dtv @@ -39,9 +41,17 @@ typedef struct thread descriptor used by libpthread. */ dtv_t *dtv; void *self; /* Pointer to the thread descriptor. */ + int multiple_threads; +#ifdef NEED_DL_SYSINFO + uintptr_t sysinfo; +#endif } tcbhead_t; #endif +#ifdef NEED_DL_SYSINFO +/* Offset of the SYSINFO element in tcbhead_t. */ +# define SYSINFO_OFFSET 24 +#endif /* We can support TLS only if the floating-stack support is available. However, we want to compile in the support and test at runtime whether @@ -174,6 +184,12 @@ TLS_DO_MODIFY_LDT_KERNEL_CHECK( \ TLS_DO_MODIFY_LDT ((descr), 0) # endif +#if defined NEED_DL_SYSINFO && defined SHARED +# define INIT_SYSINFO \ + head->sysinfo = GL(dl_sysinfo) +#else +# define INIT_SYSINFO +#endif /* Code to initially initialize the thread pointer. This might need special attention since 'errno' is not yet available and if the @@ -189,9 +205,14 @@ TLS_DO_MODIFY_LDT_KERNEL_CHECK( \ /* For now the thread descriptor is at the same address. */ \ head->self = _descr; \ \ + INIT_SYSINFO; \ TLS_SETUP_GS_SEGMENT (_descr, secondcall); \ }) +/* Indicate that dynamic linker shouldn't try to initialize TLS even + when no PT_TLS segments are found in the program and libraries + it is linked against. */ +# define TLS_INIT_TP_EXPENSIVE 1 /* Return the address of the dtv for the current thread. */ # define THREAD_DTV() \ |