From 95107b7c028806919630bf02c653aa8f4f867c94 Mon Sep 17 00:00:00 2001
From: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Date: Mon, 19 May 2008 11:27:37 +0200
Subject: [PATCH] avr32: Do stricter stack checking in the exception handler
Don't do a stack dump if the stack pointer is outside the memory area
reserved for stack.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
---
cpu/at32ap/exception.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/cpu/at32ap/exception.c b/cpu/at32ap/exception.c
index 0672685cd0..dc9c3002a4 100644
--- a/cpu/at32ap/exception.c
+++ b/cpu/at32ap/exception.c
@@ -111,7 +111,8 @@ void do_unknown_exception(unsigned int ecr, struct pt_regs *regs)
printf("CPU Mode: %s\n", cpu_modes[mode]);
/* Avoid exception loops */
- if (regs->sp < CFG_SDRAM_BASE || regs->sp >= gd->stack_end)
+ if (regs->sp < (gd->stack_end - CONFIG_STACKSIZE)
+ || regs->sp >= gd->stack_end)
printf("\nStack pointer seems bogus, won't do stack dump\n");
else
dump_mem("\nStack: ", regs->sp, gd->stack_end);
--
2.39.5