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Diffstat (limited to 'ldso/include/dl-defs.h')
-rw-r--r--ldso/include/dl-defs.h51
1 files changed, 50 insertions, 1 deletions
diff --git a/ldso/include/dl-defs.h b/ldso/include/dl-defs.h
index 3de7f5230..2c4402929 100644
--- a/ldso/include/dl-defs.h
+++ b/ldso/include/dl-defs.h
@@ -110,7 +110,7 @@ typedef struct {
#endif
/* Initialize a LOADADDR representing the loader itself. It's only
- * called from DL_BOOT, so additional arguments passed to it may be
+ * called from DL_START, so additional arguments passed to it may be
* referenced.
*/
#ifndef DL_INIT_LOADADDR_BOOT
@@ -144,6 +144,12 @@ typedef struct {
((LOADADDR) = (DL_LOADADDR_TYPE)(BASEADDR))
#endif
+/* Update LOADADDR with information about PHDR, just mapped to the
+ given ADDR. */
+#ifndef DL_INIT_LOADADDR_HDR
+# define DL_INIT_LOADADDR_HDR(LOADADDR, ADDR, PHDR) /* Do nothing. */
+#endif
+
/* Convert a DL_LOADADDR_TYPE to an identifying pointer. Used mostly
* for debugging.
*/
@@ -166,6 +172,13 @@ typedef struct {
&& (!(TFROM) || (TFROM)->loadaddr < (TPNT)->loadaddr))
#endif
+/* This is called from dladdr() to give targets that use function descriptors
+ * a chance to map a function descriptor's address to the function's entry
+ * point before trying to find in which library it's defined. */
+#ifndef DL_LOOKUP_ADDRESS
+#define DL_LOOKUP_ADDRESS(ADDRESS) (ADDRESS)
+#endif
+
/* Use this macro to convert a pointer to a function's entry point to
* a pointer to function. The pointer is assumed to have already been
* relocated. LOADADDR is passed because it may contain additional
@@ -202,4 +215,40 @@ typedef struct {
# define DL_FIND_HASH_VALUE(TPNT, TYPE, SYM) (DL_RELOC_ADDR ((SYM)->st_value, (TPNT)->loadaddr))
#endif
+/* Unmap all previously-mapped segments accumulated in LOADADDR.
+ Generally used when an error occurs during loading. */
+#ifndef DL_LOADADDR_UNMAP
+# define DL_LOADADDR_UNMAP(LOADADDR, LEN) \
+ _dl_munmap((char *) (LOADADDR), (LEN))
+#endif
+
+/* Similar to DL_LOADADDR_UNMAP, but used for libraries that have been
+ dlopen()ed successfully, when they're dlclose()d. */
+#ifndef DL_LIB_UNMAP
+# define DL_LIB_UNMAP(LIB, LEN) (DL_LOADADDR_UNMAP ((LIB)->loadaddr, (LEN)))
+#endif
+
+/* Define this to verify that a library named LIBNAME, whose ELF
+ headers are pointed to by EPNT, is suitable for dynamic linking.
+ If it is not, print an error message (optional) and return NULL.
+ If the library can have its segments relocated independently,
+ arrange for PICLIB to be set to 2. If all segments have to be
+ relocated by the same amount, set it to 1. If it has to be loaded
+ at physical addresses as specified in the program headers, set it
+ to 0. A reasonable (?) guess for PICLIB will already be in place,
+ so it is safe to do nothing here. */
+#ifndef DL_CHECK_LIB_TYPE
+# define DL_CHECK_LIB_TYPE(EPNT, PICLIB, PROGNAME, LIBNAME) (void)0
+#endif
+
+/* Define this if you have special segment. */
+#ifndef DL_IS_SPECIAL_SEGMENT
+# define DL_IS_SPECIAL_SEGMENT(EPNT, PPNT) 0
+#endif
+
+/* Define this if you want to use special method to map the segment. */
+#ifndef DL_MAP_SEGMENT
+# define DL_MAP_SEGMENT(EPNT, PPNT, INFILE, FLAGS) 0
+#endif
+
#endif /* _LD_DEFS_H */