[uClibc-cvs] uClibc/ldso/ldso/sh64 dl-startup.h, 1.3, 1.4 dl-sysdep.h, 1.2, 1.3

Erik Andersen andersen at uclibc.org
Tue Feb 17 10:56:01 UTC 2004


Update of /var/cvs/uClibc/ldso/ldso/sh64
In directory nail:/tmp/cvs-serv25724/sh64

Modified Files:
	dl-startup.h dl-sysdep.h 
Log Message:
Seperate out the startup stuff from the non-startup stuff.
Begin converting some big ugly macros to inline functions
instead


Index: dl-sysdep.h
===================================================================
RCS file: /var/cvs/uClibc/ldso/ldso/sh64/dl-sysdep.h,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- dl-sysdep.h	14 Feb 2004 11:30:37 -0000	1.2
+++ dl-sysdep.h	17 Feb 2004 10:55:58 -0000	1.3
@@ -4,19 +4,10 @@
  * so that we can minimize the amount of platform specific code.
  */
 
-/* 
- * Define this if the system uses RELOCA.
- */
+/* Define this if the system uses RELOCA.  */
 #define ELF_USES_RELOCA
 
 /*
- * 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.
- */
-#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *)ARGS)
-
-/*
  * Initialization sequence for a GOT.
  */
 #define INIT_GOT(GOT_BASE,MODULE)				\
@@ -25,133 +16,6 @@
 	GOT_BASE[1] = (unsigned long)(MODULE);			\
 }
 
-/*
- * Here is a macro to perform a relocation.  This is only used when
- * bootstrapping the dynamic loader.  RELP is the relocation that we
- * are performing, REL is the pointer to the address we are relocating.
- * SYMBOL is the symbol involved in the relocation, and LOAD is the
- * load address.
- */
-
-/* 
- * We need to do this stupidity here as the preprocessor will choke when
- * SYMTAB is NULL if we do this in PERFORM_BOOTSTRAP_RELOC().
- */
-
-#include <elf.h>
-
-static inline int __extract_lsb_from_symtab(Elf32_Sym *symtab)
-{
-	static int lsb = 0;
-
-	/* Check for SHmedia/SHcompact */
-	if (symtab)
-		lsb = symtab->st_other & 4;
-	
-	return lsb;
-}
-
-/*
- * While on the subject of stupidity, there appear to be some conflicts with
- * regards to several relocation types as far as binutils is concerned
- * (Barcelona and Madrid both appear to use an out of date elf.h, whereas
- * native Catalonia has all of the necessary definitions. As a workaround,
- * we'll just define them here for sanity..
- */
-#ifndef R_SH_RELATIVE_LOW16
-#  define R_SH_RELATIVE_LOW16		197
-#  define R_SH_RELATIVE_MEDLOW16	198
-#  define R_SH_IMM_LOW16		246
-#  define R_SH_IMM_LOW16_PCREL		247
-#  define R_SH_IMM_MEDLOW16		248
-#  define R_SH_IMM_MEDLOW16_PCREL	249
-#endif
-
-#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB)		\
-	const unsigned int r_type = ELF32_R_TYPE((RELP)->r_info);	\
-	int lsb = __extract_lsb_from_symtab(SYMTAB);			\
-									\
-	switch (r_type)	{						\
-	case R_SH_REL32:						\
-		*(REL)  = (SYMBOL) + (RELP)->r_addend			\
-			    - (unsigned long)(REL);			\
-		break;							\
-	case R_SH_DIR32:						\
-	case R_SH_GLOB_DAT:						\
-	case R_SH_JMP_SLOT:						\
-		*(REL)  = ((SYMBOL) + (RELP)->r_addend) | lsb;		\
-		break;							\
-	case R_SH_RELATIVE:						\
-		*(REL)  = (LOAD) + (RELP)->r_addend;			\
-		break;							\
-	case R_SH_RELATIVE_LOW16:					\
-	case R_SH_RELATIVE_MEDLOW16:					\
-	{								\
-		unsigned long word, value;				\
-									\
-		word = (unsigned long)(REL) & ~0x3fffc00;		\
-		value = (LOAD) + (RELP)->r_addend;			\
-									\
-		if (r_type == R_SH_RELATIVE_MEDLOW16)			\
-			value >>= 16;					\
-									\
-		word |= (value & 0xffff) << 10;				\
-		*(REL)	= word;						\
-		break;							\
-	}								\
-	case R_SH_IMM_LOW16:						\
-	case R_SH_IMM_MEDLOW16:						\
-	{								\
-		unsigned long word, value;				\
-									\
-		word = (unsigned long)(REL) & ~0x3fffc00;		\
-		value = ((SYMBOL) + (RELP)->r_addend) | lsb;		\
-									\
-		if (r_type == R_SH_IMM_MEDLOW16)			\
-			value >>= 16;					\
-									\
-		word |= (value & 0xffff) << 10;				\
-		*(REL)	= word;						\
-		break;							\
-	}								\
-	case R_SH_IMM_LOW16_PCREL:					\
-	case R_SH_IMM_MEDLOW16_PCREL:					\
-	{								\
-		unsigned long word, value;				\
-									\
-		word = (unsigned long)(REL) & ~0x3fffc00;		\
-		value = (SYMBOL) + (RELP)->r_addend			\
-			  - (unsigned long)(REL);			\
-									\
-		if (r_type == R_SH_IMM_MEDLOW16_PCREL)			\
-			value >>= 16;					\
-									\
-		word |= (value & 0xffff) << 10;				\
-		*(REL)	= word;						\
-		break;							\
-	}								\
-	case R_SH_NONE:							\
-		break;							\
-	default:							\
-		SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc type ");	\
-		SEND_NUMBER_STDERR(ELF32_R_TYPE((RELP)->r_info), 1);	\
-		SEND_STDERR("REL, SYMBOL, LOAD: ");			\
-		SEND_ADDRESS_STDERR(REL, 0);				\
-		SEND_STDERR(", ");					\
-		SEND_ADDRESS_STDERR(SYMBOL, 0);				\
-		SEND_STDERR(", ");					\
-		SEND_ADDRESS_STDERR(LOAD, 1);				\
-		_dl_exit(1);						\
-	}
-
-/*
- * Transfer control to the user's application, once the dynamic loader
- * is done.  This routine has to exit the current function, then 
- * call the _dl_elf_main function.
- */
-
-#define START()   return _dl_elf_main;
-
 /* Here we define the magic numbers that this dynamic loader should accept */
 #define MAGIC1 EM_SH
 #undef  MAGIC2

Index: dl-startup.h
===================================================================
RCS file: /var/cvs/uClibc/ldso/ldso/sh64/dl-startup.h,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -d -r1.3 -r1.4
--- dl-startup.h	7 Feb 2004 12:26:33 -0000	1.3
+++ dl-startup.h	17 Feb 2004 10:55:58 -0000	1.4
@@ -23,3 +23,138 @@
 
 #define DL_BOOT(X)   static void __attribute__ ((unused)) _dl_boot2 (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.
+ */
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *)ARGS)
+
+/*
+ * Here is a macro to perform a relocation.  This is only used when
+ * bootstrapping the dynamic loader.  RELP is the relocation that we
+ * are performing, REL is the pointer to the address we are relocating.
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
+ * load address.
+ */
+
+/*
+ * We need to do this stupidity here as the preprocessor will choke when
+ * SYMTAB is NULL if we do this in PERFORM_BOOTSTRAP_RELOC().
+ */
+
+#include <elf.h>
+
+static inline int __extract_lsb_from_symtab(Elf32_Sym *symtab)
+{
+	static int lsb = 0;
+
+	/* Check for SHmedia/SHcompact */
+	if (symtab)
+		lsb = symtab->st_other & 4;
+
+	return lsb;
+}
+
+/*
+ * While on the subject of stupidity, there appear to be some conflicts with
+ * regards to several relocation types as far as binutils is concerned
+ * (Barcelona and Madrid both appear to use an out of date elf.h, whereas
+ * native Catalonia has all of the necessary definitions. As a workaround,
+ * we'll just define them here for sanity..
+ */
+#ifndef R_SH_RELATIVE_LOW16
+#  define R_SH_RELATIVE_LOW16		197
+#  define R_SH_RELATIVE_MEDLOW16	198
+#  define R_SH_IMM_LOW16		246
+#  define R_SH_IMM_LOW16_PCREL		247
+#  define R_SH_IMM_MEDLOW16		248
+#  define R_SH_IMM_MEDLOW16_PCREL	249
+#endif
+
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB)		\
+	const unsigned int r_type = ELF32_R_TYPE((RELP)->r_info);	\
+	int lsb = __extract_lsb_from_symtab(SYMTAB);			\
+									\
+	switch (r_type)	{						\
+	case R_SH_REL32:						\
+		*(REL)  = (SYMBOL) + (RELP)->r_addend			\
+			    - (unsigned long)(REL);			\
+		break;							\
+	case R_SH_DIR32:						\
+	case R_SH_GLOB_DAT:						\
+	case R_SH_JMP_SLOT:						\
+		*(REL)  = ((SYMBOL) + (RELP)->r_addend) | lsb;		\
+		break;							\
+	case R_SH_RELATIVE:						\
+		*(REL)  = (LOAD) + (RELP)->r_addend;			\
+		break;							\
+	case R_SH_RELATIVE_LOW16:					\
+	case R_SH_RELATIVE_MEDLOW16:					\
+	{								\
+		unsigned long word, value;				\
+									\
+		word = (unsigned long)(REL) & ~0x3fffc00;		\
+		value = (LOAD) + (RELP)->r_addend;			\
+									\
+		if (r_type == R_SH_RELATIVE_MEDLOW16)			\
+			value >>= 16;					\
+									\
+		word |= (value & 0xffff) << 10;				\
+		*(REL)	= word;						\
+		break;							\
+	}								\
+	case R_SH_IMM_LOW16:						\
+	case R_SH_IMM_MEDLOW16:						\
+	{								\
+		unsigned long word, value;				\
+									\
+		word = (unsigned long)(REL) & ~0x3fffc00;		\
+		value = ((SYMBOL) + (RELP)->r_addend) | lsb;		\
+									\
+		if (r_type == R_SH_IMM_MEDLOW16)			\
+			value >>= 16;					\
+									\
+		word |= (value & 0xffff) << 10;				\
+		*(REL)	= word;						\
+		break;							\
+	}								\
+	case R_SH_IMM_LOW16_PCREL:					\
+	case R_SH_IMM_MEDLOW16_PCREL:					\
+	{								\
+		unsigned long word, value;				\
+									\
+		word = (unsigned long)(REL) & ~0x3fffc00;		\
+		value = (SYMBOL) + (RELP)->r_addend			\
+			  - (unsigned long)(REL);			\
+									\
+		if (r_type == R_SH_IMM_MEDLOW16_PCREL)			\
+			value >>= 16;					\
+									\
+		word |= (value & 0xffff) << 10;				\
+		*(REL)	= word;						\
+		break;							\
+	}								\
+	case R_SH_NONE:							\
+		break;							\
+	default:							\
+		SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc type ");	\
+		SEND_NUMBER_STDERR(ELF32_R_TYPE((RELP)->r_info), 1);	\
+		SEND_STDERR("REL, SYMBOL, LOAD: ");			\
+		SEND_ADDRESS_STDERR(REL, 0);				\
+		SEND_STDERR(", ");					\
+		SEND_ADDRESS_STDERR(SYMBOL, 0);				\
+		SEND_STDERR(", ");					\
+		SEND_ADDRESS_STDERR(LOAD, 1);				\
+		_dl_exit(1);						\
+	}
+
+/*
+ * Transfer control to the user's application, once the dynamic loader
+ * is done.  This routine has to exit the current function, then
+ * call the _dl_elf_main function.
+ */
+
+#define START()   return _dl_elf_main;
+
+




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