1 files changed, 131 insertions, 0 deletions
diff --git a/ldso/ldso/sparc/ld_sysdep.h b/ldso/ldso/sparc/ld_sysdep.h
new file mode 100644
index 000000000..1d4c0354f
--- /dev/null
+++ b/ldso/ldso/sparc/ld_sysdep.h
@@ -0,0 +1,131 @@
+
+/*
+ * Various assmbly language/system dependent  hacks that are required
+ * so that we can minimize the amount of platform specific code.
+ */
+#define LINUXBIN
+
+/*
+ * Define this if the system uses RELOCA.
+ */
+#define ELF_USES_RELOCA
+
+/*
+ * Get the address of the Global offset table.  This must be absolute, not
+ * relative.
+ */
+#define GET_GOT(X)     __asm__("\tmov %%l7,%0\n\t" : "=r" (X))
+
+/*
+ * Get a pointer to the argv array.  On many platforms this can be just
+ * the address if the first argument, on other platforms we need to
+ * do something a little more subtle here.  We assume that argc is stored
+ * at the word just below the argvp that we return here.
+ */
+#define GET_ARGV(ARGVP, ARGS) __asm__("\tadd %%fp,68,%0\n" : "=r" (ARGVP));
+
+/*
+ * Initialization sequence for a GOT.  For the Sparc, this points to the
+ * PLT, and we need to initialize a couple of the slots.  The PLT should
+ * look like:
+ *
+ *		save %sp, -64, %sp
+ *		call _dl_linux_resolve
+ *		nop
+ *		.word implementation_dependent
+ */
+#define INIT_GOT(GOT_BASE,MODULE) \
+{				\
+   GOT_BASE[0] = 0x9de3bfc0;  /* save %sp, -64, %sp */	\
+   GOT_BASE[1] = 0x40000000 | (((unsigned int) _dl_linux_resolve - (unsigned int) GOT_BASE - 4) >> 2);	\
+   GOT_BASE[2] = 0x01000000; /* nop */ 			\
+   GOT_BASE[3] = (int) MODULE;					\
+}
+
+/*
+ * Here is a macro to perform a relocation.  This is only used when
+ * bootstrapping the dynamic loader.
+ */
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
+	switch(ELF32_R_TYPE((RELP)->r_info)) {		\
+	case R_SPARC_32:				\
+	  *REL = SYMBOL + (RELP)->r_addend;		\
+	  break;					\
+	case R_SPARC_GLOB_DAT:				\
+	  *REL = SYMBOL + (RELP)->r_addend;		\
+	  break;					\
+	case R_SPARC_JMP_SLOT:				\
+	  REL[1] = 0x03000000 | ((SYMBOL >> 10) & 0x3fffff);	\
+	  REL[2] = 0x81c06000 | (SYMBOL & 0x3ff);	\
+	  break;					\
+	case R_SPARC_NONE:				\
+	  break;					\
+        case R_SPARC_WDISP30:				\
+          break;                                        \
+	case R_SPARC_RELATIVE:				\
+	  *REL += (unsigned int) LOAD + (RELP)->r_addend; \
+	  break;					\
+	default:					\
+	  _dl_exit(1);					\
+	}
+
+
+/*
+ * Transfer control to the user's application, once the dynamic loader
+ * is done.  The crt calls atexit with $g1 if not null, so we need to
+ * ensure that it contains NULL.
+ */
+
+#define START()		\
+	__asm__ volatile ( \
+	                   "add %%g0,%%g0,%%g1\n\t" \
+			   "jmpl %0, %%o7\n\t"	\
+			   "restore %%g0,%%g0,%%g0\n\t" \
+		    	: /*"=r" (status) */ :	\
+		    	  "r" (_dl_elf_main): "g1", "o0", "o1")
+
+
+
+/* Here we define the magic numbers that this dynamic loader should accept */
+
+#define MAGIC1 EM_SPARC
+#undef  MAGIC2
+/* Used for error messages */
+#define ELF_TARGET "Sparc"
+
+#ifndef COMPILE_ASM
+extern unsigned int _dl_linux_resolver(unsigned int reloc_entry,
+					unsigned int * i);
+#endif
+
+/*
+ * Define this if you want a dynamic loader that works on Solaris.
+ */
+#define SOLARIS_COMPATIBLE
+
+/*
+ * Define this because we do not want to call .udiv in the library.
+ * Change on the plans -miguel:
+ * We just statically link against .udiv.  This is required
+ * if we want to be able to run on Sun4c machines.
+ */
+
+/* We now link .urem against this one */
+#ifdef USE_V8
+#define do_rem(result,n,base) ({ \
+volatile int __res; \
+__asm__("mov %%g0,%%Y\n\t" \
+	"sdiv %2,%3,%%l6\n\t" \
+	 "smul %%l6,%3,%%l6\n\t" \
+	 "sub  %2,%%l6,%0\n\t" \
+	 :"=r" (result),"=r" (__res):"r" (n),"r"(base) : "l6" ); __res; })
+#else
+#define do_rem(a,b,c) a = _dl_urem (b,c);
+#endif
+/*
+ * dbx wants the binder to have a specific name.  Mustn't disappoint it.
+ */
+#ifdef SOLARIS_COMPATIBLE
+#define _dl_linux_resolve _elf_rtbndr
+#endif
+