1 files changed, 99 insertions, 0 deletions
diff --git a/ldso/ldso/nds32/dl-sysdep.h b/ldso/ldso/nds32/dl-sysdep.h
new file mode 100644
index 000000000..c4a32ca71
--- /dev/null
+++ b/ldso/ldso/nds32/dl-sysdep.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2016 Andes Technology, Inc.
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+/* Define this if the system uses RELOCA.  */
+#define ELF_USES_RELOCA
+#include <elf.h>
+/* Initialization sequence for the GOT.  */
+#define INIT_GOT(GOT_BASE,MODULE) \
+{				\
+  GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
+  GOT_BASE[1] = (unsigned long) MODULE; \
+}
+
+static __inline__ unsigned long nds32_modulus(unsigned long m, unsigned long p)
+{
+	unsigned long i,t,inc;
+	i=p; t=0;
+	while (!(i&(1<<31))) {
+		i<<=1;
+		t++;
+	}
+	t--;
+	for (inc=t;inc>2;inc--) {
+		i=p<<inc;
+		if (i&(1<<31))
+			break;
+		while (m>=i) {
+			m-=i;
+			i<<=1;
+			if (i&(1<<31))
+				break;
+			if (i<p)
+				break;
+		}
+	}
+	while (m>=p) {
+		m-=p;
+	}
+	return m;
+}
+#define do_rem(result, n, base) ((result) = nds32_modulus(n, base))
+
+/* Here we define the magic numbers that this dynamic loader should accept */
+#define MAGIC1 EM_NDS32
+#undef  MAGIC2
+
+/* Used for error messages */
+#define ELF_TARGET "NDS32"
+
+struct elf_resolve;
+unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
+
+/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
+   PLT entries should not be allowed to define the value.
+   ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
+   of the main executable's symbols, as for a COPY reloc.  */
+#define elf_machine_type_class(type) \
+  ((((type) == R_NDS32_JMP_SLOT) * ELF_RTYPE_CLASS_PLT)	\
+   | (((type) == R_NDS32_COPY) * ELF_RTYPE_CLASS_COPY))
+
+/* Return the link-time address of _DYNAMIC.  Conveniently, this is the
+   first element of the GOT.  We used to use the PIC register to do this
+   without a constant pool reference, but GCC 4.2 will use a pseudo-register
+   for the PIC base, so it may not be in r10.  */
+static __inline__ Elf32_Addr __attribute__ ((unused))
+elf_machine_dynamic (void)
+{
+	Elf32_Addr link_addr;
+	__asm__ ( "l.w %0, _GLOBAL_OFFSET_TABLE_@GOTOFF": "=r" (link_addr) );
+	return link_addr;
+}
+
+/* Return the run-time load address of the shared object.  */
+static __inline__ Elf32_Addr __attribute__ ((unused))
+elf_machine_load_address (void)
+{
+  /* It doesn't matter what variable this is, the reference never makes
+     it to assembly.  We need a dummy reference to some global variable
+     via the GOT to make sure the compiler initialized %ebx in time.  */
+
+	Elf32_Addr addr;
+	__asm__ ("la	%0, _dl_start@GOTOFF\n" : "=r" (addr) );
+	return addr - elf_machine_dynamic();
+}
+
+static __inline__ void
+elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr,
+		      Elf32_Word relative_count)
+{
+	 Elf32_Rela * rpnt = (void *) rel_addr;
+	--rpnt;
+	do {
+		Elf32_Addr *const reloc_addr = (void *) (load_off + (++rpnt)->r_offset);
+
+		*reloc_addr = load_off + rpnt->r_addend;
+	} while (--relative_count);
+}