diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/shared/startup/bsp-start-copy-sections.c')
-rw-r--r-- | c/src/lib/libbsp/arm/shared/startup/bsp-start-copy-sections.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/shared/startup/bsp-start-copy-sections.c b/c/src/lib/libbsp/arm/shared/startup/bsp-start-copy-sections.c new file mode 100644 index 0000000000..b7eb1f99a5 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/startup/bsp-start-copy-sections.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + */ + +#include <bsp/start.h> +#include <bsp/linker-symbols.h> + +static void BSP_START_TEXT_SECTION bsp_start_clear_bss(void) +{ + const int *end = (const int *) bsp_section_bss_end; + int *out = (int *) bsp_section_bss_begin; + + /* Clear BSS */ + while (out != end) { + *out = 0; + ++out; + } +} + +void BSP_START_TEXT_SECTION bsp_start_copy_sections(void) +{ + /* Copy .text section */ + bsp_start_memcpy( + (int *) bsp_section_text_begin, + (const int *) bsp_section_text_load_begin, + (size_t) bsp_section_text_size + ); + + /* Copy .rodata section */ + bsp_start_memcpy( + (int *) bsp_section_rodata_begin, + (const int *) bsp_section_rodata_load_begin, + (size_t) bsp_section_rodata_size + ); + + /* Copy .data section */ + bsp_start_memcpy( + (int *) bsp_section_data_begin, + (const int *) bsp_section_data_load_begin, + (size_t) bsp_section_data_size + ); + + /* Copy .fast_text section */ + bsp_start_memcpy( + (int *) bsp_section_fast_text_begin, + (const int *) bsp_section_fast_text_load_begin, + (size_t) bsp_section_fast_text_size + ); + + /* Copy .fast_data section */ + bsp_start_memcpy( + (int *) bsp_section_fast_data_begin, + (const int *) bsp_section_fast_data_load_begin, + (size_t) bsp_section_fast_data_size + ); + + bsp_start_clear_bss(); +} |