From: Keith Packard <keithp@keithp.com>
Date: Sat, 14 Jul 2012 08:24:14 +0000 (-0700)
Subject: altos/stm: Force STM stack to start at the top of RAM
X-Git-Tag: 1.1~98
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=09633cac697e37d770b2b666ab20cab30628484f

altos/stm: Force STM stack to start at the top of RAM

Using a fixed size means crashing if there's not enough space for
that, or wasting memory if there's too much.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/stm/altos-ram.ld b/src/stm/altos-ram.ld
index b8fffedc..1143a08b 100644
--- a/src/stm/altos-ram.ld
+++ b/src/stm/altos-ram.ld
@@ -19,8 +19,6 @@ MEMORY {
 	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 16K
 }
 
-C_STACK_SIZE = 512;
-
 INCLUDE registers.ld
 
 SECTIONS {
@@ -59,7 +57,7 @@ SECTIONS {
 		__bss_end__ = .;
 	} >ram
 
-	PROVIDE(__stack__ = . + C_STACK_SIZE);
+	PROVIDE(__stack__ = ORIGIN(ram) + LENGTH(ram));
 	PROVIDE(end = .);
 
 }
diff --git a/src/stm/altos.ld b/src/stm/altos.ld
index 7fede558..f5a84f4c 100644
--- a/src/stm/altos.ld
+++ b/src/stm/altos.ld
@@ -23,7 +23,6 @@ MEMORY {
 INCLUDE registers.ld
 
 EXTERN (stm_interrupt_vector)
-C_STACK_SIZE = 512;
 
 SECTIONS {
 	. = ORIGIN(rom);
@@ -62,7 +61,7 @@ SECTIONS {
 		__bss_end__ = .;
 	} >ram
 
-	PROVIDE(__stack__ = . + C_STACK_SIZE);
+	PROVIDE(__stack__ = ORIGIN(ram) + LENGTH(ram));
 	PROVIDE(end = .);
 
 }