required files for ELF share library support. this version is

somewhat skeletal.

3 files changed, 236 insertions, 0 deletions

diff --git a/sys/arch/powerpc/include/dlfcn.h b/sys/arch/powerpc/include/dlfcn.h
new file mode 100644
index 00000000000..f9dd62c5ef3
--- /dev/null
+++ b/sys/arch/powerpc/include/dlfcn.h
@@ -0,0 +1,63 @@
+/*	$OpenBSD: dlfcn.h,v 1.1 2000/01/24 04:03:23 rahnds Exp $	*/
+/*	$NetBSD: dlfcn.h,v 1.2 1995/06/05 19:38:00 pk Exp $	*/
+
+/*
+ * Copyright (c) 1995 Paul Kranenburg
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Paul Kranenburg.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _DLFCN_H_
+#define _DLFCN_H_
+
+#include <sys/cdefs.h>
+
+/*
+ * User interface to the run-time linker.
+ */
+__BEGIN_DECLS
+extern void	*dlopen __P((const char *, int));
+extern int	dlclose __P((void *));
+extern void	*dlsym __P((void *, const char *));
+extern int	dlctl __P((void *, int, void *));
+extern const char	*dlerror __P((void));
+__END_DECLS
+
+/* Values for dlopen `mode'. */
+#define DL_LAZY		1
+#define RTLD_LAZY	DL_LAZY		/* SunOS Compat */
+
+/*
+ * dlctl() commands
+ */
+#define DL_GETERRNO	1
+#define DL_SETSRCHPATH	x
+#define DL_GETLIST	x
+#define DL_GETREFCNT	x
+#define DL_GETLOADADDR	x
+
+#endif /* _DLFCN_H_ */
diff --git a/sys/arch/powerpc/include/elf_abi.h b/sys/arch/powerpc/include/elf_abi.h
new file mode 100644
index 00000000000..6628778bae3
--- /dev/null
+++ b/sys/arch/powerpc/include/elf_abi.h
@@ -0,0 +1,48 @@
+/*	$OpenBSD: elf_abi.h,v 1.1 2000/01/24 04:03:23 rahnds Exp $ */
+
+/*
+ * Copyright (c) 1996 Per Fogelstrom
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed under OpenBSD by
+ *	Per Fogelstrom.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#ifndef _POWERPC_ELF_ABI_H
+#define _POWERPC_ELF_ABI_H
+
+/* From MIPS ABI supplemental */
+
+/* Architecture dependent Segment types - p_type */ 
+/* ??NONE?? */
+
+/* Architecture dependent d_tag field for Elf32_Dyn.  */
+/* ??NONE?? */
+
+#define DT_PROCNUM 0
+
+#endif /* _POWERPC_ELF_ABI_H */
diff --git a/sys/arch/powerpc/include/link.h b/sys/arch/powerpc/include/link.h
new file mode 100644
index 00000000000..817e9d2434b
--- /dev/null
+++ b/sys/arch/powerpc/include/link.h
@@ -0,0 +1,125 @@
+/*	$OpenBSD: link.h,v 1.1 2000/01/24 04:03:23 rahnds Exp $ */
+
+/*
+ * Copyright (c) 1996 Per Fogelstrom
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed under OpenBSD by
+ *	Per Fogelstrom.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#ifndef _POWERPC_LINK_H
+#define _POWERPC_LINK_H
+ 
+#include <elf_abi.h>
+#include <machine/elf_abi.h>
+
+/*
+ *	Debug rendezvous struct. Pointer to this is set up in the
+ *	target code pointed by the DT_MIPS_RLD_MAP tag. If it is
+ *	defined.
+ */
+
+struct r_debug {
+	int	r_version;		/* Protocol version.	*/
+    	struct link_map *r_map;		/* Head of list of loaded objects.  */
+
+    /* This is the address of a function internal to the run-time linker,
+       that will always be called when the linker begins to map in a
+       library or unmap it, and again when the mapping change is complete.
+       The debugger can set a breakpoint at this address if it wants to
+       notice shared object mapping changes.  */              
+	Elf32_Addr r_brk;                                            
+	enum {
+        /* This state value describes the mapping change taking place when
+           the `r_brk' address is called.  */                      
+		RT_CONSISTENT,          /* Mapping change is complete.  */
+		RT_ADD,                 /* Adding a new object.  */
+		RT_DELETE,              /* Removing an object mapping.  */
+	} r_state;
+
+	Elf32_Addr r_ldbase;        /* Base address the linker is loaded at.  */
+  };            
+
+/* This symbol refers to the "dynamic structure" in the `.dynamic' section
+   of whatever module refers to `_DYNAMIC'.  So, to find its own
+   `struct r_debug', a program could do:
+     for (dyn = _DYNAMIC; dyn->d_tag != DT_NULL)
+       if (dyn->d_tag == DT_MIPS_RLD_MAP) r_debug = (struct r_debug) dyn->d_un.d_ptr;
+   */
+
+extern Elf32_Dyn _DYNAMIC[];
+
+
+/* Structure describing a loaded shared object.  The `l_next' and `l_prev'
+   members form a chain of all the shared objects loaded at startup.
+
+   These data structures exist in space used by the run-time dynamic linker;
+   modifying them may have disastrous results.  */
+
+struct link_map
+  {
+    /* These first few members are part of the protocol with the debugger.
+       This is the same format used in SVR4.  */
+
+    Elf32_Addr l_addr;		/* Base address shared object is loaded at.  */
+    Elf32_Addr l_offs;		/* Offset */
+    char *l_name;		/* Absolute file name object was found in.  */
+    Elf32_Dyn *l_ld;		/* Dynamic section of the shared object.  */
+    struct link_map *l_next, *l_prev; /* Chain of loaded objects.  */
+
+    /* All following members are internal to the dynamic linker.
+       They may change without notice.  */
+
+    const char *l_libname;	/* Name requested (before search).  */
+
+    /* Indexed pointers to dynamic section.  */
+    Elf32_Dyn *l_info[DT_NUM + DT_PROCNUM];
+
+    const Elf32_Phdr *l_phdr;	/* Pointer to program header table in core.  */
+    Elf32_Word l_phnum;		/* Number of program header entries.  */
+    Elf32_Addr l_entry;		/* Entry point location.  */
+
+    /* Symbol hash table.  */
+    Elf32_Word l_nbuckets;
+    const Elf32_Word *l_buckets, *l_chain;
+
+    unsigned int l_opencount;	/* Reference count for dlopen/dlclose.  */
+    enum			/* Where this object came from.  */
+      {
+	lt_executable,		/* The main executable program.  */
+	lt_interpreter,		/* The interpreter: the dynamic linker.  */
+	lt_library,		/* Library needed by main executable.  */
+	lt_loaded,		/* Extra run-time loaded shared object.  */
+      } l_type:2;
+    unsigned int l_deps_loaded:1; /* Nonzero if DT_NEEDED items loaded.  */
+    unsigned int l_relocated:1;	/* Nonzero if object's relocations done.  */
+    unsigned int l_init_called:1; /* Nonzero if DT_INIT function called.  */
+    unsigned int l_init_running:1; /* Nonzero while DT_INIT function runs.  */
+  };
+
+#endif /* !_POWERPC_LINK_H */