AVR linker script minor changes

[Marek Michalkiewicz]

These AVR linker script changes make it possible to change start address
of the data section from the default 0x60 (currently hardcoded in gcrt1.S
but will be changed to __data_start), and define the stack at link time
instead of main() compile time ("avr-gcc -minit-stack=__stack" can then
be made the default).

Thanks,
Marek


2000-05-23  Marek Michalkiewicz  <marekm@linux.org.pl>

	* emulparams/avr1200.sh (STACK): Define as 0.
	* emulparams/avr23xx.sh (STACK): Define as last internal SRAM address.
	* emulparams/avr4433.sh (STACK): Likewise.
	* emulparams/avr44x4.sh (STACK): Likewise.
	* emulparams/avr85xx.sh (STACK): Likewise.
	* emulparams/avrmega103.sh (STACK): Likewise.
	* emulparams/avrmega161.sh (STACK): Likewise.
	* emulparams/avrmega603.sh (STACK): Likewise.
	* scripttempl/elf32avr.sc (__data_start): Define for gcrt1.
	(__stack): Define from ${STACK} for main().

Index: ld/emulparams/avr1200.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avr1200.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avr1200.sh
*** avr1200.sh	2000/03/27 08:39:14	1.1
--- avr1200.sh	2000/05/23 09:39:47
*************** TEMPLATE_NAME=generic
*** 9,11 ****
--- 9,12 ----
  TEXT_LENGTH=1K
  DATA_LENGTH=0
  EEPROM_LENGTH=64
+ STACK=0
Index: ld/emulparams/avr23xx.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avr23xx.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avr23xx.sh
*** avr23xx.sh	2000/03/27 08:39:14	1.1
--- avr23xx.sh	2000/05/23 09:39:47
*************** TEMPLATE_NAME=generic
*** 9,12 ****
--- 9,13 ----
  TEXT_LENGTH=2K
  DATA_LENGTH=128
  EEPROM_LENGTH=128
+ STACK=0x0DF
  
Index: ld/emulparams/avr4433.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avr4433.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avr4433.sh
*** avr4433.sh	2000/03/27 08:39:14	1.1
--- avr4433.sh	2000/05/23 09:39:47
*************** TEMPLATE_NAME=generic
*** 9,12 ****
--- 9,13 ----
  TEXT_LENGTH=4K
  DATA_LENGTH=128
  EEPROM_LENGTH=256
+ STACK=0x0DF
  
Index: ld/emulparams/avr44x4.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avr44x4.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avr44x4.sh
*** avr44x4.sh	2000/03/27 08:39:14	1.1
--- avr44x4.sh	2000/05/23 09:39:47
*************** TEMPLATE_NAME=generic
*** 9,12 ****
--- 9,13 ----
  TEXT_LENGTH=4K
  DATA_LENGTH=256
  EEPROM_LENGTH=256
+ STACK=0x15F
  
Index: ld/emulparams/avr85xx.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avr85xx.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avr85xx.sh
*** avr85xx.sh	2000/03/27 08:39:14	1.1
--- avr85xx.sh	2000/05/23 09:39:47
*************** TEMPLATE_NAME=generic
*** 9,12 ****
--- 9,13 ----
  TEXT_LENGTH=8K
  DATA_LENGTH=512
  EEPROM_LENGTH=512
+ STACK=0x25F
  
Index: ld/emulparams/avrmega103.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avrmega103.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avrmega103.sh
*** avrmega103.sh	2000/03/27 08:39:14	1.1
--- avrmega103.sh	2000/05/23 09:39:47
*************** TEMPLATE_NAME=generic
*** 9,12 ****
--- 9,13 ----
  TEXT_LENGTH=128K
  DATA_LENGTH=4K
  EEPROM_LENGTH=4K
+ STACK=0x0FFF
  
Index: ld/emulparams/avrmega161.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avrmega161.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avrmega161.sh
*** avrmega161.sh	2000/03/27 08:39:14	1.1
--- avrmega161.sh	2000/05/23 09:39:47
*************** TEMPLATE_NAME=generic
*** 9,12 ****
--- 9,13 ----
  TEXT_LENGTH=16K
  DATA_LENGTH=1K
  EEPROM_LENGTH=512
+ STACK=0x45F
  
Index: ld/emulparams/avrmega603.sh
===================================================================
RCS file: /cvs/src/src/ld/emulparams/avrmega603.sh,v
retrieving revision 1.1
diff -c -3 -p -r1.1 avrmega603.sh
*** avrmega603.sh	2000/03/27 08:39:14	1.1
--- avrmega603.sh	2000/05/23 09:39:48
*************** TEMPLATE_NAME=generic
*** 9,12 ****
--- 9,13 ----
  TEXT_LENGTH=64K
  DATA_LENGTH=4K
  EEPROM_LENGTH=2K
+ STACK=0x0FFF
  
Index: ld/scripttempl/elf32avr.sc
===================================================================
RCS file: /cvs/src/src/ld/scripttempl/elf32avr.sc,v
retrieving revision 1.1
diff -c -3 -p -r1.1 elf32avr.sc
*** elf32avr.sc	2000/03/27 08:39:14	1.1
--- elf32avr.sc	2000/05/23 09:39:48
*************** SECTIONS
*** 88,93 ****
--- 88,94 ----
  
    .data	${RELOCATING-0} : ${RELOCATING+AT (ADDR (.text) + SIZEOF (.text))}
    {
+     ${RELOCATING+ PROVIDE (__data_start = .) ; }
      *(.data)
      *(.gnu.linkonce.d*)
      ${RELOCATING+. = ALIGN(2);}
*************** SECTIONS
*** 144,149 ****
--- 145,151 ----
    .debug_loc      0 : { *(.debug_loc) }
    .debug_macinfo  0 : { *(.debug_macinfo) }
  
+   PROVIDE (__stack = ${STACK}) ;
  }
  EOF