diff options
Diffstat (limited to 'cpukit/score/src/tlsallocsize.c')
| -rw-r--r-- | cpukit/score/src/tlsallocsize.c | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/cpukit/score/src/tlsallocsize.c b/cpukit/score/src/tlsallocsize.c index f78239192c..fa28391b83 100644 --- a/cpukit/score/src/tlsallocsize.c +++ b/cpukit/score/src/tlsallocsize.c @@ -10,7 +10,7 @@ */ /* - * Copyright (C) 2014, 2022 embedded brains GmbH & Co. KG + * Copyright (C) 2014, 2023 embedded brains GmbH & Co. KG * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -42,14 +42,47 @@ #include <rtems/score/interr.h> #include <rtems/score/thread.h> +extern char _TLS_Data_begin[]; + +extern char _TLS_Data_size[]; + +extern char _TLS_BSS_begin[]; + +extern char _TLS_BSS_size[]; + +extern char _TLS_Size[]; + +/** + * @brief The TLS section alignment. + * + * This symbol is provided by the linker command file as the maximum alignment + * of the .tdata and .tbss sections. The linker ensures that the first TLS + * output section is aligned to the maximum alignment of all TLS output + * sections, see function _bfd_elf_tls_setup() in bfd/elflink.c of the GNU + * Binutils sources. The linker command file must take into account the case + * that the .tdata section is empty and the .tbss section is non-empty. + */ +extern char _TLS_Alignment[]; + +const volatile TLS_Configuration _TLS_Configuration = { + .data_begin = _TLS_Data_begin, + .data_size = _TLS_Data_size, + .bss_begin = _TLS_BSS_begin, + .bss_size = _TLS_BSS_size, + .size = _TLS_Size, + .alignment = _TLS_Alignment +}; + static uintptr_t _TLS_Allocation_size; uintptr_t _TLS_Get_allocation_size( void ) { - uintptr_t size; - uintptr_t allocation_size; + const volatile TLS_Configuration *config; + uintptr_t size; + uintptr_t allocation_size; - size = _TLS_Get_size(); + config = &_TLS_Configuration; + size = (uintptr_t) config->size; if ( size == 0 ) { return 0; @@ -66,7 +99,7 @@ uintptr_t _TLS_Get_allocation_size( void ) * shall meet the stack alignment requirement. */ stack_align = CPU_STACK_ALIGNMENT; - tls_align = RTEMS_ALIGN_UP( (uintptr_t) _TLS_Alignment, stack_align ); + tls_align = RTEMS_ALIGN_UP( (uintptr_t) config->alignment, stack_align ); #ifndef __i386__ /* Reserve space for the dynamic thread vector */ |