Prevent .noinit section from incorrect placement for AVR.

When .data and .bss sections are empty .noinit section is placed at data
region's start. This will be incorrect for devices that has different
data start address than data region start in linker script.
The patch updates .noinit section's VMA to end of .bss section. So, .noinit
section will be placed at .data section address (-Tdata=<address>) when .data
and .bss sections are empty.

ld/

	* scripttempl/avr.sc (.noinit): Force .noinit VMA to end of .bss VMA.
	* scripttempl/avrtiny.sc (.noinit): Likewise.

diff --git a/ld/ChangeLog b/ld/ChangeLog
index c13a202..2462b30 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,8 @@
+2016-01-22  Pitchumani Sivanupandi  <pitchumani.s@atmel.com>
+
+       * scripttempl/avr.sc (.noinit): Force .noinit VMA to end of .bss VMA.
+       * scripttempl/avrtiny.sc (.noinit): Likewise.
+
 2016-01-21  Nick Clifton  <nickc@redhat.com>
 
        PR ld/19453

diff --git a/ld/scripttempl/avr.sc b/ld/scripttempl/avr.sc
index de81987..c26f4ea 100644 (file)
--- a/ld/scripttempl/avr.sc
+++ b/ld/scripttempl/avr.sc
@@ -210,7 +210,7 @@ SECTIONS
   ${RELOCATING+ __data_load_end = __data_load_start + SIZEOF(.data); }
 
   /* Global data not cleared after reset.  */
-  .noinit ${RELOCATING-0}:
+  .noinit ${RELOCATING+ ADDR(.bss) + SIZEOF (.bss)} ${RELOCATING-0}: ${RELOCATING+ AT (ADDR (.noinit))}
   {
     ${RELOCATING+ PROVIDE (__noinit_start = .) ; }
     *(.noinit*)

diff --git a/ld/scripttempl/avrtiny.sc b/ld/scripttempl/avrtiny.sc
index 00daf11..045bc4b 100644 (file)
--- a/ld/scripttempl/avrtiny.sc
+++ b/ld/scripttempl/avrtiny.sc
@@ -210,7 +210,7 @@ SECTIONS
   ${RELOCATING+ __data_load_end = __data_load_start + SIZEOF(.data); }
 
   /* Global data not cleared after reset.  */
-  .noinit ${RELOCATING-0}:
+  .noinit ${RELOCATING+ ADDR(.bss) + SIZEOF (.bss)} ${RELOCATING-0} : ${RELOCATING+ AT (ADDR (.noinit))}
   {
     ${RELOCATING+ PROVIDE (__noinit_start = .) ; }
     *(.noinit*)