libgloss/arm fixes

[Mark Salter]

Just checked this in.

--Mark

2002-02-05  Mark Salter  <msalter@redhat.com>

	* arm/elf-iq80310.specs: Ditto.
	* arm/elf-redboot.specs: Ditto.
	* arm/elf-redboot.ld: Fix eh_frame sections. Add .jcr section.
	* arm/redboot-crt0.S: Add support for __USES_INITFINI__.

Index: arm/elf-iq80310.specs
===================================================================
RCS file: /cvs/src/src/libgloss/arm/elf-iq80310.specs,v
retrieving revision 1.1
diff -u -p -5 -r1.1 elf-iq80310.specs
--- elf-iq80310.specs	2002/01/07 18:12:32	1.1
+++ elf-iq80310.specs	2002/02/05 17:44:21
@@ -2,7 +2,7 @@
 
 *link:
 -T redboot.ld%s -Ttext 0xA0020000 %(old_link)
 
 *startfile:
-crtbegin%O%s redboot-crt0%O%s redboot-syscalls%O%s
+crti%O%s crtbegin%O%s redboot-crt0%O%s redboot-syscalls%O%s
 
Index: arm/elf-redboot.ld
===================================================================
RCS file: /cvs/src/src/libgloss/arm/elf-redboot.ld,v
retrieving revision 1.1
diff -u -p -5 -r1.1 elf-redboot.ld
--- elf-redboot.ld	2002/01/07 18:12:32	1.1
+++ elf-redboot.ld	2002/02/05 17:44:21
@@ -100,10 +100,11 @@ SECTIONS
   {
     KEEP (*(.fini))
   } =0
   .rodata   : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r*) }
   .rodata1   : { *(.rodata1) }
+  .eh_frame_hdr : { *(.eh_frame_hdr) }
   /* Adjust the address for the data segment.  We want to adjust up to
      the same address within the page on the next page up.  */
   . = ALIGN(256) + (. & (256 - 1));
   .data    :
   {
@@ -111,11 +112,11 @@ SECTIONS
     *(.data.*)
     *(.gnu.linkonce.d*)
     SORT(CONSTRUCTORS)
   }
   .data1   : { *(.data1) }
-  .eh_frame : { *(.eh_frame) }
+  .eh_frame : { KEEP (*(.eh_frame)) }
   .gcc_except_table : { *(.gcc_except_table) }
   .ctors   : 
   {
     /* gcc uses crtbegin.o to find the start of
        the constructors, so we make sure it is
@@ -140,10 +141,11 @@ SECTIONS
     KEEP (*crtbegin.o(.dtors))
     KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
     KEEP (*(SORT(.dtors.*)))
     KEEP (*(.dtors))
   }
+  .jcr            : { KEEP (*(.jcr)) }
   .got           : { *(.got.plt) *(.got) }
   .dynamic       : { *(.dynamic) }
   /* We want the small data sections together, so single-instruction offsets
      can access them all, and initialized data all before uninitialized, so
      we can shorten the on-disk segment size.  */
Index: arm/elf-redboot.specs
===================================================================
RCS file: /cvs/src/src/libgloss/arm/elf-redboot.specs,v
retrieving revision 1.1
diff -u -p -5 -r1.1 elf-redboot.specs
--- elf-redboot.specs	2002/01/07 18:12:32	1.1
+++ elf-redboot.specs	2002/02/05 17:44:21
@@ -2,7 +2,7 @@
 
 *link:
 -T redboot.ld%s -Ttext 0x20000 %(old_link)
 
 *startfile:
-crtbegin%O%s redboot-crt0%O%s redboot-syscalls%O%s
+crti%O%s crtbegin%O%s redboot-crt0%O%s redboot-syscalls%O%s
 
Index: arm/redboot-crt0.S
===================================================================
RCS file: /cvs/src/src/libgloss/arm/redboot-crt0.S,v
retrieving revision 1.2
diff -u -p -5 -r1.2 redboot-crt0.S
--- redboot-crt0.S	2002/01/24 13:33:55	1.2
+++ redboot-crt0.S	2002/02/05 17:44:21
@@ -47,22 +47,37 @@ __change_mode:	
 	
 	bl	SYM_NAME(__get_memtop)
 	sub	r0, r0, #32
 	mov	sp, r0
 
+#ifdef __USES_INITFINI__
+	/* Some arm/elf targets use the .init and .fini sections
+	   to create constructors and destructors, and for these
+	   targets we need to call the _init function and arrange
+	   for _fini to be called at program exit.  */
+	ldr	r0, .Lfini
+	bl	SYM_NAME (atexit)
+	bl	SYM_NAME (_init)
+#endif	
+
 	mov 	a1, #0
 	ldr	a2, .LC3
 	mov	a3, a2
 	bl	SYM_NAME(main)
     1:	bl	SYM_NAME(exit)
 	b	1b
+	.align	2
 .LC1:
 	.word	__bss_start__
 .LC2:
 	.word	__bss_end__
 .LC3:
 	.word	0
+#ifdef __USES_INITFINI__
+.Lfini:
+	.word	SYM_NAME(_fini)
+#endif
 	
 #if 0
 #ifdef __thumb__
 	.code 16
 #endif