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-rw-r--r--src/boot.S122
1 files changed, 61 insertions, 61 deletions
diff --git a/src/boot.S b/src/boot.S
index 0662f70..7aa21fc 100644
--- a/src/boot.S
+++ b/src/boot.S
@@ -6,100 +6,100 @@
_start:
reset:
- // disable core0,1,2.
- mrc p15, #0, r1, c0, c0, #5
- and r1, r1, #3
- cmp r1, #0
- bne io_halt
+ // disable core0,1,2.
+ mrc p15, #0, r1, c0, c0, #5
+ and r1, r1, #3
+ cmp r1, #0
+ bne io_halt
- // set vector address.
- ldr r0, =vector
- mcr p15, 0, r0, c12, c0, 0
+ // set vector address.
+ ldr r0, =vector
+ mcr p15, 0, r0, c12, c0, 0
- // save cpsr.
- mrs r0, cpsr
+ // save cpsr.
+ mrs r0, cpsr
- // setup sp in IRQ mode.
- bic r1, r0, #0x1f
- orr r1, r1, #0x12
- msr cpsr_c,r1
- mov sp,#0x4000
+ // setup sp in IRQ mode.
+ bic r1, r0, #0x1f
+ orr r1, r1, #0x12
+ msr cpsr_c,r1
+ mov sp,#0x4000
- // restore cpsr.
- msr cpsr_c, r0
+ // restore cpsr.
+ msr cpsr_c, r0
- // setup the stack in SVC mode.
- mov sp, #0x8000
+ // setup the stack in SVC mode.
+ mov sp, #0x8000
- // Clear out bss.
- ldr r4, =__bss_start
- ldr r9, =__bss_end
- mov r5, #0
- mov r6, #0
- mov r7, #0
- mov r8, #0
- b 2f
+ // Clear out bss.
+ ldr r4, =__bss_start
+ ldr r9, =__bss_end
+ mov r5, #0
+ mov r6, #0
+ mov r7, #0
+ mov r8, #0
+ b 2f
1:
- // store multiple at r4.
- stmia r4!, {r5-r8}
+ // store multiple at r4.
+ stmia r4!, {r5-r8}
- // If we are still below bss_end, loop.
+ // If we are still below bss_end, loop.
2:
- cmp r4, r9
- blo 1b
+ cmp r4, r9
+ blo 1b
- // Call kernel_main
- ldr r3, =kernel_main
- blx r3
+ // Call kernel_main
+ ldr r3, =kernel_main
+ blx r3
irq:
- push {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
- bl a_irq_handler
- pop {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
- subs pc, lr, #4
+ push {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
+ bl a_irq_handler
+ pop {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
+ subs pc, lr, #4
fiq:
- push {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
- bl a_fiq_handler
- pop {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
- subs pc, lr, #4
+ push {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
+ bl a_fiq_handler
+ pop {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,lr}
+ subs pc, lr, #4
.globl io_halt
io_halt:
- wfi
- b io_halt
+ wfi
+ b io_halt
.globl enable_irq
enable_irq:
- cpsie i
- bx lr
+ cpsie i
+ bx lr
.globl disable_irq
disable_irq:
- cpsid i
- bx lr
+ cpsid i
+ bx lr
.globl enable_fiq
enable_fiq:
- cpsie f
- bx lr
+ cpsie f
+ bx lr
.globl disable_fiq
disable_fiq:
- cpsid f
- bx lr
+ cpsid f
+ bx lr
.align 5
vector:
- ldr pc, reset_handler
- ldr pc, undefined_handler
- ldr pc, swi_handler
- ldr pc, prefetch_handler
- ldr pc, data_handler
- ldr pc, unused_handler
- ldr pc, irq_handler
- ldr pc, fiq_handler
+ ldr pc, reset_handler
+ ldr pc, undefined_handler
+ ldr pc, swi_handler
+ ldr pc, prefetch_handler
+ ldr pc, data_handler
+ ldr pc, unused_handler
+ ldr pc, irq_handler
+ ldr pc, fiq_handler
reset_handler: .word reset
undefined_handler: .word io_halt