split stack into irq, fiq and supervisor stacks; add proper handling of those in interrupt handlers (asm code)

1 files changed, 19 insertions, 3 deletions

diff --git a/kernel_stage2.ld b/kernel_stage2.ld
index a3df063..15b61ec 100644
--- a/kernel_stage2.ld
+++ b/kernel_stage2.ld
@@ -56,8 +56,24 @@ SECTIONS
 	{
 		_stack_start = .;
 		
-		. = . + MMU_SECTION_SIZE;
-
-		_stack_top = .;
+		_fiq_stack_start = .;
+		
+		. = . + (1 << 18);
+		
+		_fiq_stack_top = .;
+		
+		_irq_stack_start = .;
+		
+		. = . + (1 << 18);
+		
+		_irq_stack_top = .;
+		
+		_supervisor_stack_start = .;
+		
+		. = . + (1 << 19);
+		
+		_supervisor_stack_top = .;
+		
+		_stack_end = .;
 	}
 }