From e5649e61768bfd26d48aa44076d2c1e801a3e8cb Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Tue, 17 Feb 2004 10:55:59 +0000
Subject: Seperate out the startup stuff from the non-startup stuff. Begin
 converting some big ugly macros to inline functions instead

---
 ldso/ldso/sparc/dl-startup.h | 57 +++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 56 insertions(+), 1 deletion(-)

(limited to 'ldso/ldso/sparc/dl-startup.h')

diff --git a/ldso/ldso/sparc/dl-startup.h b/ldso/ldso/sparc/dl-startup.h
index 42c96a6f5..dd502f39c 100644
--- a/ldso/ldso/sparc/dl-startup.h
+++ b/ldso/ldso/sparc/dl-startup.h
@@ -4,4 +4,59 @@
  * can be done.
  */
 
-#define DL_BOOT(X) void __attribute__ ((unused)) _dl_boot (X)
+#define DL_BOOT(X) __attribute__ ((unused)) void _dl_boot (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));
+
+/*
+ * 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,SYMTAB) \
+	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")
+
+
+
+
-- 
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