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Fixed linker script to allow growing stack+heap.

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This commit is contained in:
Cristian Maglie
2012-08-13 14:44:30 +02:00
parent 00e029209d
commit cf28ccfb06
1 changed files with 13 additions and 7 deletions
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20
hardware/arduino/sam/variants/arduino_due_x/linker_scripts/gcc/flash.ld
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@ -40,8 +40,6 @@ MEMORY
ram (rwx) : ORIGIN = 0x20070000, LENGTH = 0x00018000 /* sram, 96K */ ram (rwx) : ORIGIN = 0x20070000, LENGTH = 0x00018000 /* sram, 96K */
} }
RAM_END = 0x20088000 ; /* There is a way to define this as ram.ORIGIN + ram.LENGTH ? */
/* Section Definitions */ /* Section Definitions */
SECTIONS SECTIONS
{ {
@ -116,7 +114,7 @@ SECTIONS
} > ram } > ram
/* .bss section which is used for uninitialized data */ /* .bss section which is used for uninitialized data */
.bss (NOLOAD) : .bss ALIGN(4) (NOLOAD) :
{ {
. = ALIGN(4); . = ALIGN(4);
_sbss = . ; _sbss = . ;
@ -131,10 +129,18 @@ SECTIONS
. = ALIGN(4); . = ALIGN(4);
_end = . ; _end = . ;
/* put stack section at the bottom of ram space */ /* .stack_dummy section doesn't contains any symbols. It is only
.stack RAM_END (NOLOAD): used for linker to calculate size of stack sections, and assign
values to stack symbols later */
.stack_dummy :
{ {
_sstack = .; *(.stack*)
_estack = .;
} > ram } > ram
/* Set stack top to end of ram, and stack limit move down by
* size of stack_dummy section */
__StackTop = ORIGIN(ram) + LENGTH(ram);
__StackLimit = __StackTop - SIZEOF(.stack_dummy);
PROVIDE(_sstack = __StackLimit);
PROVIDE(_estack = __StackTop);
} }