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-rw-r--r--cpukit/include/rtems/rtl/rtl-obj.h211
1 files changed, 122 insertions, 89 deletions
diff --git a/cpukit/include/rtems/rtl/rtl-obj.h b/cpukit/include/rtems/rtl/rtl-obj.h
index 33951e10d1..3523958bfd 100644
--- a/cpukit/include/rtems/rtl/rtl-obj.h
+++ b/cpukit/include/rtems/rtl/rtl-obj.h
@@ -198,65 +198,66 @@ typedef bool (*rtems_rtl_obj_depends_iterator) (rtems_rtl_obj* obj,
*/
struct rtems_rtl_obj
{
- rtems_chain_node link; /**< The node's link in the chain. */
- uint32_t flags; /**< The status of the object file. */
- size_t users; /**< Users of this object file, number of loads. */
- size_t refs; /**< 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. */
- const char* aname; /**< The archive name containing the
- * object. NULL means the object is not
- * in a lib */
- off_t ooffset; /**< The object offset in the archive. */
- size_t fsize; /**< Size of the object file. */
- rtems_chain_control sections; /**< The sections of interest in the object
- * file. */
- rtems_chain_control dependents; /**< The dependent object files. */
- rtems_rtl_obj_sym* local_table; /**< Local symbol table. */
- size_t local_syms; /**< Local symbol count. */
- size_t local_size; /**< Local symbol memory usage. */
- rtems_rtl_obj_sym* global_table; /**< Global symbol table. */
- size_t global_syms; /**< Global symbol count. */
- size_t global_size; /**< Global symbol memory usage. */
- size_t unresolved; /**< The number of unresolved relocations. */
- void* text_base; /**< The base address of the text section
- * in memory. */
- size_t text_size; /**< The size of the text section. */
- void* const_base; /**< The base address of the const section
- * in memory. */
- size_t const_size; /**< The size of the const section. */
- 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. */
- size_t data_size; /**< The size of the data section. */
- void* bss_base; /**< The base address of the bss section in
- * memory. */
- size_t bss_size; /**< The size of the bss section. */
- size_t exec_size; /**< The amount of executable memory
- * allocated */
- void* entry; /**< The entry point of the module. */
- uint32_t checksum; /**< The checksum of the text sections. A
- * 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. */
- void* trampoline; /**< Trampoline memory. Used for fixups or
- * veneers */
- size_t tramp_size; /**< Size of a tramopline slot. */
- size_t tramps_size; /**< Size of the trampoline memory. */
- void* tramp_brk; /**< Trampoline memory allocator. MD
- * relocators can take memory from the
- * break upto the size. */
- size_t tramp_relocs; /**< Number of slots reserved for
- * relocs. The remainder are for
- * unresolved symbols. */
- struct link_map* linkmap; /**< For GDB. */
- void* loader; /**< The file details specific to a
- * loader. */
+ rtems_chain_node link; /**< The node's link in the chain. */
+ uint32_t flags; /**< The status of the object file. */
+ size_t users; /**< Users of this object file, number of loads. */
+ size_t refs; /**< 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. */
+ const char* aname; /**< The archive name containing the
+ * object. NULL means the object is not
+ * in a lib */
+ off_t ooffset; /**< The object offset in the archive. */
+ size_t fsize; /**< Size of the object file. */
+ rtems_chain_control sections; /**< The sections of interest in the object
+ * file. */
+ rtems_chain_control dependents; /**< The dependent object files. */
+ rtems_rtl_obj_sym* local_table; /**< Local symbol table. */
+ size_t local_syms; /**< Local symbol count. */
+ size_t local_size; /**< Local symbol memory usage. */
+ rtems_rtl_obj_sym* global_table; /**< Global symbol table. */
+ size_t global_syms; /**< Global symbol count. */
+ size_t global_size; /**< Global symbol memory usage. */
+ size_t unresolved; /**< The number of unresolved relocations. */
+ void* text_base; /**< The base address of the text section
+ * in memory. */
+ size_t text_size; /**< The size of the text section. */
+ void* const_base; /**< The base address of the const section
+ * in memory. */
+ size_t const_size; /**< The size of the const section. */
+ 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. */
+ size_t data_size; /**< The size of the data section. */
+ void* bss_base; /**< The base address of the bss section in
+ * memory. */
+ size_t bss_size; /**< The size of the bss section. */
+ size_t exec_size; /**< The amount of executable memory
+ * allocated */
+ void* entry; /**< The entry point of the module. */
+ uint32_t checksum; /**< The checksum of the text sections. A
+ * 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. */
+ void* tramp_base; /**< Trampoline memory. Used for fixups or
+ * veneers */
+ size_t tramp_size; /**< Size of a trampoline memory. */
+ size_t tramp_slots; /**< The number of tampoline slots. */
+ size_t tramp_slot_size; /**< The number of tampoline slots. */
+ void* tramp_brk; /**< Trampoline memory allocator. MD
+ * relocators can take memory from the
+ * break up to the size. */
+ size_t tramp_relocs; /**< Number of slots reserved for
+ * relocs. The remainder are for
+ * unresolved symbols. */
+ struct link_map* linkmap; /**< For GDB. */
+ void* loader; /**< The file details specific to a
+ * loader. */
};
/**
@@ -352,7 +353,7 @@ static inline bool rtems_rtl_obj_text_inside (const rtems_rtl_obj* obj,
{
return
(address >= obj->text_base) &&
- (address < (obj->text_base + obj->text_size));
+ ((char*) address < ((char*) obj->text_base + obj->text_size));
}
/**
@@ -387,6 +388,29 @@ static inline bool rtems_rtl_obj_has_symbol (const rtems_rtl_obj* obj,
}
/**
+ * Does the object file have any trampolines?
+ *
+ * @param obj The object file's descriptor to check for available space.
+ * @retval bool Returns @true if the object file has trampolines
+ */
+static inline size_t rtems_rtl_obj_has_trampolines (const rtems_rtl_obj* obj)
+{
+ return obj->tramp_slot_size != 0 && obj->tramp_slots != 0;
+}
+
+/**
+ * Is there space in the trampoline memory for a trapoline.
+ *
+ * @param obj The object file's descriptor to check for available space.
+ * @param size The size to be allocated.
+ * @retval bool Returns @true if the space is available.
+ */
+static inline size_t rtems_rtl_obj_tramp_avail_space (const rtems_rtl_obj* obj)
+{
+ return (char*) obj->tramp_brk - (char*) obj->tramp_base;
+}
+
+/**
* Is there space in the trampoline memory for a trapoline.
*
* @param obj The object file's descriptor to check for available space.
@@ -396,8 +420,8 @@ static inline bool rtems_rtl_obj_has_symbol (const rtems_rtl_obj* obj,
static inline bool rtems_rtl_obj_has_tramp_space (const rtems_rtl_obj* obj,
const size_t size)
{
- return (obj->trampoline != NULL &&
- ((obj->tramp_brk - obj->trampoline) + size) <= obj->tramps_size);
+ return (obj->tramp_base != NULL &&
+ (rtems_rtl_obj_tramp_avail_space (obj) + size) <= obj->tramp_size);
}
/**
@@ -408,20 +432,19 @@ static inline bool rtems_rtl_obj_has_tramp_space (const rtems_rtl_obj* obj,
*/
static inline size_t rtems_rtl_obj_trampoline_slots (const rtems_rtl_obj* obj)
{
- return obj->trampoline == NULL || obj->tramp_size == 0 ?
- 0 : obj->tramps_size / obj->tramp_size;
+ return obj->tramp_slots;
}
/**
- * Number of trampolines.
+ * Number of trampoline slot available.
*
* @param obj The object file's descriptor.
- * @retval size_t The number of trampolines.
+ * @retval size_t The number of trampoline slots available.
*/
static inline size_t rtems_rtl_obj_trampolines (const rtems_rtl_obj* obj)
{
- return obj->trampoline == NULL || obj->tramp_size == 0 ?
- 0 : (obj->tramp_brk - obj->trampoline) / obj->tramp_size;
+ return obj->tramp_base == NULL || obj->tramp_slots == 0 ?
+ 0 : rtems_rtl_obj_tramp_avail_space (obj) / obj->tramp_slot_size;
}
/**
@@ -560,22 +583,6 @@ rtems_rtl_obj_sect* rtems_rtl_obj_find_section_by_mask (const rtems_rtl_obj* obj
uint32_t mask);
/**
- * Allocate a table for trampoline fixup calls.
- *
- * @param obj The object file's descriptor.
- * @retval true The table was allocated.
- * @retval false The alloction failed.
- */
-bool rtems_rtl_obj_alloc_trampoline (rtems_rtl_obj* obj);
-
-/**
- * Erase the object file descriptor's trampoline table..
- *
- * @param obj The object file's descriptor.
- */
-void rtems_rtl_obj_erase_trampoline (rtems_rtl_obj* obj);
-
-/**
* Allocate a table for dependent objects.
*
* @param obj The object file's descriptor.
@@ -738,6 +745,24 @@ size_t rtems_rtl_obj_bss_size (const rtems_rtl_obj* obj);
uint32_t rtems_rtl_obj_bss_alignment (const rtems_rtl_obj* obj);
/**
+ * The trampoline size.
+ *
+ * @param obj The object file's descriptor.
+ * @return size_t The size of the trampoline memory of the object file.
+ */
+size_t rtems_rtl_obj_tramp_size (const rtems_rtl_obj* obj);
+
+/**
+ * The trampolinme alignment for the architecture.
+ *
+ * This is implemented and set in the architecture backend.
+ *
+ * @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_tramp_alignment (const rtems_rtl_obj* obj);
+
+/**
* Relocate the object file. The object file's section are parsed for any
* relocation type sections.
*
@@ -798,11 +823,19 @@ bool rtems_rtl_obj_load_symbols (rtems_rtl_obj* obj,
* @retval true The object has been sucessfully loaded.
* @retval false The load failed. The RTL error has been set.
*/
-bool
-rtems_rtl_obj_alloc_sections (rtems_rtl_obj* obj,
- int fd,
- rtems_rtl_obj_sect_handler handler,
- void* data);
+bool rtems_rtl_obj_alloc_sections (rtems_rtl_obj* obj,
+ int fd,
+ rtems_rtl_obj_sect_handler handler,
+ void* data);
+
+/**
+ * Resize the sections.
+ *
+ * @param obj The object file's descriptor.
+ * @retval true The object has been sucessfully loaded.
+ * @retval false The load failed. The RTL error has been set.
+ */
+bool rtems_rtl_obj_resize_sections (rtems_rtl_obj* obj);
/**
* Load the sections that have been allocated memory in the target. The bss