From 0ec2016f80ffb5971362559b98b10744bb5bf893 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Tue, 31 Dec 2019 18:54:28 +0100 Subject: split stack into irq, fiq and supervisor stacks; add proper handling of those in interrupt handlers (asm code) --- memory.h | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'memory.h') diff --git a/memory.h b/memory.h index c7952f0..bdeba52 100644 --- a/memory.h +++ b/memory.h @@ -28,7 +28,13 @@ extern char _translation_table_end; extern char _sections_list_start; extern char _sections_list_end; extern char _stack_start; -extern char _stack_top; +extern char _fiq_stack_start; +extern char _fiq_stack_top; +extern char _irq_stack_start; +extern char _irq_stack_top; +extern char _supervisor_stack_start; +extern char _supervisor_stack_top; +extern char _stack_end; #define KERNEL_START ((size_t) &__start) // this is 0x0 #define KERNEL_END ((size_t) &__end) @@ -43,8 +49,14 @@ extern char _stack_top; // first section after the translation table is left unused; // the next section is used as the stack -#define STACK_START ((size_t) &_stack_start) -#define STACK_END ((size_t) &_stack_top) +#define STACK_START ((size_t) &_stack_start) +#define FIQ_STACK_START ((size_t) &_fiq_stack_start) +#define FIQ_STACK_END ((size_t) &_fiq_stack_top) +#define IRQ_STACK_START ((size_t) &_irq_stack_start) +#define IRQ_STACK_END ((size_t) &_irq_stack_top) +#define SUPERVISOR_STACK_START ((size_t) &_supervisor_stack_start) +#define SUPERVISOR_STACK_END ((size_t) &_supervisor_stack_top) +#define STACK_END ((size_t) &_stack_end) #define PRIVILEGED_MEMORY_END STACK_END -- cgit v1.2.3