rtld support for PowerPC. Mostly obtained from NetBSD, with mods

for binutils 2.13

Reviewed by:  benno

Approved by:  re (blanket)

1 files changed, 67 insertions, 0 deletions

diff --git a/libexec/rtld-elf/powerpc/rtld_machdep.h b/libexec/rtld-elf/powerpc/rtld_machdep.h
new file mode 100644
index 0000000..7e5e719
--- /dev/null
+++ b/libexec/rtld-elf/powerpc/rtld_machdep.h
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1999, 2000 John D. Polstra.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef RTLD_MACHDEP_H
+#define RTLD_MACHDEP_H	1
+
+#include <machine/atomic.h>
+
+#define	atomic_incr_int(p)	atomic_add_int((p), 1)
+#define	atomic_decr_int(p)	atomic_subtract_int((p), 1)
+
+#define CACHE_LINE_SIZE	  32
+
+struct Struct_Obj_Entry;
+
+/* Return the address of the .dynamic section in the dynamic linker. */
+#define rtld_dynamic(obj)    (&_DYNAMIC)
+
+Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
+		       const struct Struct_Obj_Entry *defobj,
+		       const struct Struct_Obj_Entry *obj,
+		       const Elf_Rel *rel);
+
+#define make_function_pointer(def, defobj) \
+	((defobj)->relocbase + (def)->st_value)
+
+#define call_initfini_pointer(obj, target) \
+	(((InitFunc)(target))())
+
+/*
+ * Lazy binding entry point, called via PLT. 
+ */
+void _rtld_bind_start(void);
+
+/*
+ * PLT functions. Not really correct prototypes, but the
+ * symbol values are needed.
+ */
+void _rtld_powerpc_pltresolve(void);
+void _rtld_powerpc_pltcall(void);
+
+#endif