Patch from Stefan Allius and Edie C. Dost to add SuperH

shared library support.  This also adds some cleaner error
handling, which I (Erik) then ported over to x86 and arm.
In addition Stefan added the following fixes:

- in hash.c was the lvalue handling of global library functions wrong.
   To fix this I had to change the prototype of _dl_find_hash. (==> TIS and
   ELF spec. Vers. 1.2)

- in ldso.c was the order of the .init sections calls wrong. Before we call
  the initialization code of a library we have to check that all dependend
  libraries are already initialized. This can easily made by calling it in the
  revers loading order. For this I added a previous pointer chain.

- in ldso.c the ELF magics wasn't checked fo PPC, MIPS and SH architecture

1 files changed, 15 insertions, 11 deletions

diff --git a/ldso/ldso/ld_hash.h b/ldso/ldso/ld_hash.h
index 639ae4510..b19d680a2 100644
--- a/ldso/ldso/ld_hash.h
+++ b/ldso/ldso/ld_hash.h
@@ -43,6 +43,7 @@ struct dyn_elf{
   struct elf_resolve * dyn;
   struct dyn_elf * next_handle;  /* Used by dlopen et al. */
   struct dyn_elf * next;
+  struct dyn_elf * prev;
 };
  
 struct elf_resolve{
@@ -113,8 +114,11 @@ extern struct elf_resolve * _dl_check_hashed_files(char * libname);
 extern struct elf_resolve * _dl_add_elf_hash_table(char * libname, 
 	char * loadaddr, unsigned long * dynamic_info, 
 	unsigned long dynamic_addr, unsigned long dynamic_size);
+
+enum caller_type{symbolrel=0,copyrel=1,resolver=2};
 extern char * _dl_find_hash(char * name, struct dyn_elf * rpnt1, 
-	struct elf_resolve * f_tpnt, int copyrel);
+	struct elf_resolve * f_tpnt, enum caller_type);
+
 extern int _dl_linux_dynamic_link(void);
 
 extern char * _dl_library_path;
@@ -129,16 +133,16 @@ static inline int _dl_symbol(char * name)
 }
 
 
-#define DL_ERROR_NOFILE 1
-#define DL_ERROR_NOZERO 2
-#define DL_ERROR_NOTELF 3
-#define DL_ERROR_NOTMAGIC 4
-#define DL_ERROR_NOTDYN 5
-#define DL_ERROR_MMAP_FAILED 6
-#define DL_ERROR_NODYNAMIC 7
-#define DL_WRONG_RELOCS 8
-#define DL_BAD_HANDLE 9
-#define DL_NO_SYMBOL 10
+#define LD_ERROR_NOFILE 1
+#define LD_ERROR_NOZERO 2
+#define LD_ERROR_NOTELF 3
+#define LD_ERROR_NOTMAGIC 4
+#define LD_ERROR_NOTDYN 5
+#define LD_ERROR_MMAP_FAILED 6
+#define LD_ERROR_NODYNAMIC 7
+#define LD_WRONG_RELOCS 8
+#define LD_BAD_HANDLE 9
+#define LD_NO_SYMBOL 10