*
*/
+#include <linux/init.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/mmu.h>
*
* This is all going to change RSN when we add bi_recs....... -- Dan
*/
- .section .text.head, "ax"
+ __HEAD
_ENTRY(_stext);
_ENTRY(_start);
.space 4
_ENTRY(crit_r11)
.space 4
+_ENTRY(crit_srr0)
+ .space 4
+_ENTRY(crit_srr1)
+ .space 4
+_ENTRY(saved_ksp_limit)
+ .space 4
/*
* Exception vector entry code. This code runs with address translation
mfcr r10; /* save CR in r10 for now */\
mfspr r11,SPRN_SRR3; /* check whether user or kernel */\
andi. r11,r11,MSR_PR; \
- lis r11,critical_stack_top@h; \
- ori r11,r11,critical_stack_top@l; \
+ lis r11,critirq_ctx@ha; \
+ tophys(r11,r11); \
+ lwz r11,critirq_ctx@l(r11); \
beq 1f; \
/* COMING FROM USER MODE */ \
mfspr r11,SPRN_SPRG3; /* if from user, start at top of */\
lwz r11,THREAD_INFO-THREAD(r11); /* this thread's kernel stack */\
- addi r11,r11,THREAD_SIZE; \
-1: subi r11,r11,INT_FRAME_SIZE; /* Allocate an exception frame */\
+1: addi r11,r11,THREAD_SIZE-INT_FRAME_SIZE; /* Alloc an excpt frm */\
tophys(r11,r11); \
stw r10,_CCR(r11); /* save various registers */\
stw r12,GPR12(r11); \
.space 4096
.globl swapper_pg_dir
swapper_pg_dir:
- .space 4096
-
-
-/* Stack for handling critical exceptions from kernel mode */
- .section .bss
- .align 12
-exception_stack_bottom:
- .space 4096
-critical_stack_top:
- .globl exception_stack_top
-exception_stack_top:
+ .space PGD_TABLE_SIZE
/* Room for two PTE pointers, usually the kernel and current user pointers
* to their respective root page table.