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mn10300 linker script update




Modern versions of the toolchain have added several new sections that need to appear in the linker script. Most notable are a few .bss sections for the C++ runtime. Failure to include these sections leads to memory corruption as the _end symbol incorrectly appears before the end of the .bss sections. Needless to say this causes a variety of fun and interesting problems as the C++ runtime clobbers the heap and vice-versa.

I resync'd all the mn103 libgloss linker scripts with the standard mn10300 linker script. I've tested the simulator linker script thoroughly, but since I don't have eval boards, I can't actually test the others.

Given I haven't contributed to this code in nearly a decade, I thought it best to wait for approval/feedback rather than just check in the changes :-)

OK to apply?


* libgloss/mn10300/sim.ld: Sync with standard mn10300 elf linker script. * libgloss/mn10300/{asb2303.ld,asb2305.ld,eval.ld}: Likewise.


? .j.ld.swp
? j.ld
Index: asb2303.ld
===================================================================
RCS file: /cvs/src/src/libgloss/mn10300/asb2303.ld,v
retrieving revision 1.2
diff -c -r1.2 asb2303.ld
*** asb2303.ld	20 May 2005 15:45:43 -0000	1.2
--- asb2303.ld	2 Sep 2008 15:25:00 -0000
***************
*** 6,122 ****
  OUTPUT_ARCH(mn10300)
  ENTRY(_start)
  GROUP(-lc -lcygmon -lgcc)
!  SEARCH_DIR(.);
  STARTUP(crt0_cygmon.o)
- 
- /* Do we need any of these for elf?
-    __DYNAMIC = 0;    */
  SECTIONS
  {
    /* Read-only sections, merged into text segment: */
!   /* Start of RAM (leaving room for Cygmon data) */
!   . = 0x90080000;
! 
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!   _edata  =  .;
!   PROVIDE (edata = .);
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    /* DWARF debug sections.
       Symbols in the DWARF debugging sections are relative to the beginning
       of the section so we begin them at 0.  */
--- 6,199 ----
  OUTPUT_ARCH(mn10300)
  ENTRY(_start)
  GROUP(-lc -lcygmon -lgcc)
! SEARCH_DIR(.);
  STARTUP(crt0_cygmon.o)
  SECTIONS
  {
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***************
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! 
!   /* These must appear regardless of  .  */
  }
--- 207,234 ----
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Index: asb2305.ld
===================================================================
RCS file: /cvs/src/src/libgloss/mn10300/asb2305.ld,v
retrieving revision 1.2
diff -c -r1.2 asb2305.ld
*** asb2305.ld	20 May 2005 15:45:43 -0000	1.2
--- asb2305.ld	2 Sep 2008 15:25:00 -0000
***************
*** 6,122 ****
  OUTPUT_ARCH(am33-2)
  ENTRY(_start)
  GROUP(-lc -lcygmon -lgcc)
-  SEARCH_DIR(.);
  STARTUP(crt0_redboot.o)
! 
! /* Do we need any of these for elf?
!    __DYNAMIC = 0;    */
  SECTIONS
  {
    /* Read-only sections, merged into text segment: */
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--- 6,199 ----
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Index: eval.ld
===================================================================
RCS file: /cvs/src/src/libgloss/mn10300/eval.ld,v
retrieving revision 1.2
diff -c -r1.2 eval.ld
*** eval.ld	20 May 2005 15:45:43 -0000	1.2
--- eval.ld	2 Sep 2008 15:25:00 -0000
***************
*** 8,122 ****
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Index: sim.ld
===================================================================
RCS file: /cvs/src/src/libgloss/mn10300/sim.ld,v
retrieving revision 1.3
diff -c -r1.3 sim.ld
*** sim.ld	20 May 2005 15:45:43 -0000	1.3
--- sim.ld	2 Sep 2008 15:25:00 -0000
***************
*** 6,120 ****
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