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aducrf101: Rearrange stack and heap to maximize available stack space

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Stack now starts at the top of RAM, heap starts after BSS, and
they grow towards each other.
This commit is contained in:
Jim Paris 2014-07-29 18:06:43 -04:00
parent 62b8aafb03
commit 3e193cca2c
2 changed files with 5 additions and 13 deletions
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7
cpu/arm/aducrf101/Common/GCC/ADuCRF101.ld
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@ -91,10 +91,8 @@ SECTIONS
} > ram AT > flash } > ram AT > flash
.bss : { .bss : {
/* Stack is in BSS */
. = ALIGN(8); . = ALIGN(8);
__bss_start = .; __bss_start = .;
*(.bss.stack)
*(.bss) *(.bss)
*(.bss.*) *(.bss.*)
*(COMMON) *(COMMON)
@ -102,4 +100,9 @@ SECTIONS
__bss_end = .; __bss_end = .;
end = .; end = .;
} > ram } > ram
/* Heap grows up from "end" (after bss), and stack grows down from
the end of RAM. */
. = ORIGIN(ram) + LENGTH(ram);
stack_end = .;
} }

11
cpu/arm/aducrf101/Common/GCC/crt0.S
View file

@ -32,19 +32,8 @@
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ */
#ifndef __STACK_SIZE
#define __STACK_SIZE 1024
#endif
.equ SCB_VTOR, 0xE000ED08 .equ SCB_VTOR, 0xE000ED08
/* Stack */
.section .bss.stack
stack_start:
.space __STACK_SIZE, 0
stack_end:
.global stack_end
/* Vector table */ /* Vector table */
.macro handler name .macro handler name
.long \name\() .long \name\()