diff options
Diffstat (limited to 'cpukit/libdl/rtl-obj.h')
| -rw-r--r-- | cpukit/libdl/rtl-obj.h | 181 |
1 files changed, 113 insertions, 68 deletions
diff --git a/cpukit/libdl/rtl-obj.h b/cpukit/libdl/rtl-obj.h index 80fc60fb05..6a35a72822 100644 --- a/cpukit/libdl/rtl-obj.h +++ b/cpukit/libdl/rtl-obj.h @@ -56,14 +56,20 @@ typedef struct rtems_rtl_loader_format_s typedef bool (*rtems_rtl_loader_check) (rtems_rtl_obj_t* obj, int fd); /** - * The type of the format loader handler. This handler loads the specific + * The type of the format loader load handler. This handler loads the specific * format. */ typedef bool (*rtems_rtl_loader_load) (rtems_rtl_obj_t* obj, int fd); /** - * The type of the format loader handler. This handler loads the specific - * format. + * The type of the format loader unload handler. This handler unloads the + * specific format. + */ +typedef bool (*rtems_rtl_loader_unload) (rtems_rtl_obj_t* obj); + +/** + * The type of the format loader signature handler. This handler checks the + * format signature. */ typedef rtems_rtl_loader_format_t* (*rtems_rtl_loader_sig) (void); @@ -72,9 +78,10 @@ typedef rtems_rtl_loader_format_t* (*rtems_rtl_loader_sig) (void); */ typedef struct rtems_rtl_loader_table_s { - rtems_rtl_loader_check check; /**< The check handler. */ - rtems_rtl_loader_load load; /**< The loader. */ - rtems_rtl_loader_sig signature; /**< The loader's signature. */ + rtems_rtl_loader_check check; /**< The check handler. */ + rtems_rtl_loader_load load; /**< The loader. */ + rtems_rtl_loader_unload unload; /**< The unloader. */ + rtems_rtl_loader_sig signature; /**< The loader's signature. */ } rtems_rtl_loader_table_t; /** @@ -84,18 +91,30 @@ typedef struct rtems_rtl_loader_table_s #define RTEMS_RTL_OBJ_SECT_CONST (1 << 1) /**< Section holds program text. */ #define RTEMS_RTL_OBJ_SECT_DATA (1 << 2) /**< Section holds program data. */ #define RTEMS_RTL_OBJ_SECT_BSS (1 << 3) /**< Section holds program bss. */ -#define RTEMS_RTL_OBJ_SECT_REL (1 << 4) /**< Section holds relocation records. */ -#define RTEMS_RTL_OBJ_SECT_RELA (1 << 5) /**< Section holds relocation addend +#define RTEMS_RTL_OBJ_SECT_EH (1 << 4) /**< Section holds exception data. */ +#define RTEMS_RTL_OBJ_SECT_REL (1 << 5) /**< Section holds relocation records. */ +#define RTEMS_RTL_OBJ_SECT_RELA (1 << 6) /**< Section holds relocation addend * records. */ -#define RTEMS_RTL_OBJ_SECT_SYM (1 << 6) /**< Section holds symbols. */ -#define RTEMS_RTL_OBJ_SECT_STR (1 << 7) /**< Section holds strings. */ -#define RTEMS_RTL_OBJ_SECT_ALLOC (1 << 8) /**< Section allocates runtime memory. */ -#define RTEMS_RTL_OBJ_SECT_LOAD (1 << 9) /**< Section is loaded from object file. */ -#define RTEMS_RTL_OBJ_SECT_WRITE (1 << 10) /**< Section is writable, ie data. */ -#define RTEMS_RTL_OBJ_SECT_EXEC (1 << 11) /**< Section is executable. */ -#define RTEMS_RTL_OBJ_SECT_ZERO (1 << 12) /**< Section is preset to zero. */ -#define RTEMS_RTL_OBJ_SECT_CTOR (1 << 13) /**< Section contains constructors. */ -#define RTEMS_RTL_OBJ_SECT_DTOR (1 << 14) /**< Section contains destructors. */ +#define RTEMS_RTL_OBJ_SECT_SYM (1 << 7) /**< Section holds symbols. */ +#define RTEMS_RTL_OBJ_SECT_STR (1 << 8) /**< Section holds strings. */ +#define RTEMS_RTL_OBJ_SECT_ALLOC (1 << 9) /**< Section allocates runtime memory. */ +#define RTEMS_RTL_OBJ_SECT_LOAD (1 << 10) /**< Section is loaded from object file. */ +#define RTEMS_RTL_OBJ_SECT_WRITE (1 << 11) /**< Section is writable, ie data. */ +#define RTEMS_RTL_OBJ_SECT_EXEC (1 << 12) /**< Section is executable. */ +#define RTEMS_RTL_OBJ_SECT_ZERO (1 << 13) /**< Section is preset to zero. */ +#define RTEMS_RTL_OBJ_SECT_LINK (1 << 14) /**< Section is link-ordered. */ +#define RTEMS_RTL_OBJ_SECT_CTOR (1 << 15) /**< Section contains constructors. */ +#define RTEMS_RTL_OBJ_SECT_DTOR (1 << 16) /**< Section contains destructors. */ +#define RTEMS_RTL_OBJ_SECT_LOCD (1 << 17) /**< Section has been located. */ + +/** + * Section types mask. + */ +#define RTEMS_RTL_OBJ_SECT_TYPES (RTEMS_RTL_OBJ_SECT_TEXT | \ + RTEMS_RTL_OBJ_SECT_CONST | \ + RTEMS_RTL_OBJ_SECT_DATA | \ + RTEMS_RTL_OBJ_SECT_BSS | \ + RTEMS_RTL_OBJ_SECT_EH) /** * An object file is made up of sections and the can be more than @@ -109,13 +128,14 @@ struct rtems_rtl_obj_sect_s const char* name; /**< The section's name. */ size_t size; /**< The size of the section in memory. */ off_t offset; /**< Offset into the object file. Relative to - * the start of the object file. */ + * the start of the object file. */ uint32_t alignment; /**< Alignment of this section. */ int link; /**< Section link field. */ int info; /**< Secfion info field. */ uint32_t flags; /**< The section's flags. */ void* base; /**< The base address of the section in * memory. */ + int load_order; /**< Order we load sections. */ }; /** @@ -135,6 +155,7 @@ struct rtems_rtl_obj_s rtems_chain_node link; /**< The node's link in the chain. */ uint32_t flags; /**< The status of the object file. */ uint32_t users; /**< References to the object file. */ + int format; /**< The format of the object file. */ const char* fname; /**< The file name for the object. */ const char* oname; /**< The object file name. Can be * relative. */ @@ -153,26 +174,27 @@ struct rtems_rtl_obj_s size_t global_size; /**< Global symbol memory usage. */ uint32_t unresolved; /**< The number of unresolved relocations. */ void* text_base; /**< The base address of the text section - * in memory. */ + * in memory. */ + size_t text_size; /**< The size of the text section. */ void* const_base; /**< The base address of the const section - * in memory. */ + * in memory. */ + void* eh_base; /**< The base address of the eh section + * in memory. */ + size_t eh_size; /**< The size of the eh section. */ void* data_base; /**< The base address of the data section - * in memory. */ + * in memory. */ void* bss_base; /**< The base address of the bss section - * in memory. */ + * in memory. */ size_t bss_size; /**< The size of the bss section. */ size_t exec_size; /**< The amount of executable memory - * allocated */ + * allocated */ void* entry; /**< The entry point of the module. */ uint32_t checksum; /**< The checksum of the text sections. A - * zero means do not checksum. */ - void* detail; /**< The file details. It contains the elf file - * detail, mainly including elf file name, - * section offset, section size, which - * elf this section belongs to.*/ + * zero means do not checksum. */ uint32_t* sec_num; /**< The sec nums of each obj. */ uint32_t obj_num; /**< The count of elf files in an rtl obj. */ struct link_map* linkmap; /**< For GDB. */ + void* loader; /**< The file details specific to a loader. */ }; /** @@ -258,6 +280,20 @@ static inline bool rtems_rtl_obj_aname_valid (const rtems_rtl_obj_t* obj) } /** + * Is the address inside the text section? + * + * @param obj The object file. + * @return bool There is an archive name + */ +static inline bool rtems_rtl_obj_text_inside (const rtems_rtl_obj_t* obj, + const void* address) +{ + return + (address >= obj->text_base) && + (address < (obj->text_base + obj->text_size)); +} + +/** * Allocate an object structure on the heap. * * @retval NULL No memory for the object. @@ -300,18 +336,6 @@ bool rtems_rtl_parse_name (const char* name, off_t* ooffset); /** - * Load the object file. - * - * @param obj The object file's descriptor. - * @param fd The file descriptor. - * @param load_syms Load symbols. - * @param load_dep Load dependent object files. - * @retval true The load was successful. - * @retval false The load failed. The RTL error has been set. - */ -bool rtems_rtl_obj_file_load (rtems_rtl_obj_t* obj, int fd); - -/** * Check of the name matches the object file's object name. * * @param obj The object file's descriptor. @@ -371,8 +395,8 @@ void rtems_rtl_obj_erase_sections (rtems_rtl_obj_t* obj); * @retval NULL The section was not found. * @return rtems_rtl_obj_sect_t* The named section. */ -rtems_rtl_obj_sect_t* rtems_rtl_obj_find_section (rtems_rtl_obj_t* obj, - const char* name); +rtems_rtl_obj_sect_t* rtems_rtl_obj_find_section (const rtems_rtl_obj_t* obj, + const char* name); /** * Find a section given a section's index number. @@ -382,21 +406,21 @@ rtems_rtl_obj_sect_t* rtems_rtl_obj_find_section (rtems_rtl_obj_t* obj, * @retval NULL The section was not found. * @return rtems_rtl_obj_sect_t* The found section. */ -rtems_rtl_obj_sect_t* rtems_rtl_obj_find_section_by_index (rtems_rtl_obj_t* obj, - int index); +rtems_rtl_obj_sect_t* rtems_rtl_obj_find_section_by_index (const rtems_rtl_obj_t* obj, + int index); /** - * The text size of the object file. Only use once all the sections has been - * added. It includes alignments between sections that are part of the object's - * text area. The consts sections are included in this section. + * The text section size. Only use once all the sections has been added. It + * includes alignments between sections that are part of the object's text + * area. The consts sections are included in this section. * * @param obj The object file's descriptor. * @return size_t The size of the text area of the object file. */ -size_t rtems_rtl_obj_text_size (rtems_rtl_obj_t* obj); +size_t rtems_rtl_obj_text_size (const rtems_rtl_obj_t* obj); /** - * The text section alignment of the object file. Only use once all the + * The text section alignment for the object file. Only use once all the * sections has been added. The section alignment is the alignment of the first * text type section loaded the text section. * @@ -406,20 +430,20 @@ size_t rtems_rtl_obj_text_size (rtems_rtl_obj_t* obj); * @param obj The object file's descriptor. * @return uint32_t The alignment. Can be 0 or 1 for not aligned or the alignment. */ -uint32_t rtems_rtl_obj_text_alignment (rtems_rtl_obj_t* obj); +uint32_t rtems_rtl_obj_text_alignment (const rtems_rtl_obj_t* obj); /** - * The const size of the object file. Only use once all the sections has been - * added. It includes alignments between sections that are part of the object's - * const area. The consts sections are included in this section. + * The const section size. Only use once all the sections has been added. It + * includes alignments between sections that are part of the object's const + * area. The consts sections are included in this section. * * @param obj The object file's descriptor. * @return size_t The size of the const area of the object file. */ -size_t rtems_rtl_obj_const_size (rtems_rtl_obj_t* obj); +size_t rtems_rtl_obj_const_size (const rtems_rtl_obj_t* obj); /** - * The const section alignment of the object file. Only use once all the + * The const section alignment for the object file. Only use once all the * sections has been added. The section alignment is the alignment of the first * const type section loaded the const section. * @@ -429,20 +453,42 @@ size_t rtems_rtl_obj_const_size (rtems_rtl_obj_t* obj); * @param obj The object file's descriptor. * @return uint32_t The alignment. Can be 0 or 1 for not aligned or the alignment. */ -uint32_t rtems_rtl_obj_const_alignment (rtems_rtl_obj_t* obj); +uint32_t rtems_rtl_obj_const_alignment (const rtems_rtl_obj_t* obj); + +/** + * The eh section size. Only use once all the sections has been added. It + * includes alignments between sections that are part of the object's bss area. + * + * @param obj The object file's descriptor. + * @return size_t The size of the bss area of the object file. + */ +size_t rtems_rtl_obj_eh_size (const rtems_rtl_obj_t* obj); + +/** + * The eh section alignment for the object file. Only use once all the sections + * has been added. The section alignment is the alignment of the first bss type + * section loaded the bss section. + * + * You can assume the alignment is a positive integral power of 2 if not 0 or + * 1. If 0 or 1 then there is no alignment. + * + * @param obj The object file's descriptor. + * @return uint32_t The alignment. Can be 0 or 1 for not aligned or the alignment. + */ +uint32_t rtems_rtl_obj_eh_alignment (const rtems_rtl_obj_t* obj); /** - * The data size of the object file. Only use once all the sections has been - * added. It includes alignments between sections that are part of the object's - * data area. + * The data section size. Only use once all the sections has been added. It + * includes alignments between sections that are part of the object's data + * area. * * @param obj The object file's descriptor. * @return size_t The size of the data area of the object file. */ -size_t rtems_rtl_obj_data_size (rtems_rtl_obj_t* obj); +size_t rtems_rtl_obj_data_size (const rtems_rtl_obj_t* obj); /** - * The data section alignment of the object file. Only use once all the + * The data section alignment for the object file. Only use once all the * sections has been added. The section alignment is the alignment of the first * data type section loaded the data section. * @@ -452,20 +498,19 @@ size_t rtems_rtl_obj_data_size (rtems_rtl_obj_t* obj); * @param obj The object file's descriptor. * @return uint32_t The alignment. Can be 0 or 1 for not aligned or the alignment. */ -uint32_t rtems_rtl_obj_data_alignment (rtems_rtl_obj_t* obj); +uint32_t rtems_rtl_obj_data_alignment (const rtems_rtl_obj_t* obj); /** - * The bss size of the object file. Only use once all the sections has been - * added. It includes alignments between sections that are part of the object's - * bss area. + * The bss section size. Only use once all the sections has been added. It + * includes alignments between sections that are part of the object's bss area. * * @param obj The object file's descriptor. * @return size_t The size of the bss area of the object file. */ -size_t rtems_rtl_obj_bss_size (rtems_rtl_obj_t* obj); +size_t rtems_rtl_obj_bss_size (const rtems_rtl_obj_t* obj); /** - * The bss section alignment of the object file. Only use once all the + * The bss section alignment for the object file. Only use once all the * sections has been added. The section alignment is the alignment of the first * bss type section loaded the bss section. * @@ -475,7 +520,7 @@ size_t rtems_rtl_obj_bss_size (rtems_rtl_obj_t* obj); * @param obj The object file's descriptor. * @return uint32_t The alignment. Can be 0 or 1 for not aligned or the alignment. */ -uint32_t rtems_rtl_obj_bss_alignment (rtems_rtl_obj_t* obj); +uint32_t rtems_rtl_obj_bss_alignment (const rtems_rtl_obj_t* obj); /** * Relocate the object file. The object file's section are parsed for any |