SEA-base-modules/vectors.s at master · hexanom/SEA-base-modules · GitHub

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.extern timer_irq_handler

;@-------------------------------------------------------------------------
;@-------------------------------------------------------------------------

.globl _start
_start:
    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 undefined
swi_handler:        .word swi
prefetch_handler:   .word prefetch
data_handler:       .word data
unused_handler:     .word unused
irq_handler:        .word irq
fiq_handler:        .word fiq

reset:
    mov r0,#0x8000
    mov r1,#0x0000
    ldmia r0!,{r2,r3,r4,r5,r6,r7,r8,r9}
    stmia r1!,{r2,r3,r4,r5,r6,r7,r8,r9}
    ldmia r0!,{r2,r3,r4,r5,r6,r7,r8,r9}
    stmia r1!,{r2,r3,r4,r5,r6,r7,r8,r9}

    ;@ FIQ
    ;@ (PSR_FIQ_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
    mov r0,#0xD1
    msr cpsr_c,r0
    mov sp,#0x38000

    ;@ IRQ
    ;@ (PSR_IRQ_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
    mov r0,#0xD2
    msr cpsr_c,r0
    mov sp,#0x40000

    ;@ (PSR_SVC_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
    mov r0,#0xD3
    msr cpsr_c,r0
    mov sp,#0x48000

    bl kmain

hang: b hang
undefined:	 b undefined
swi:	 b swi
prefetch:	b prefetch
data:	 b data
unused:	b unused
fiq:	b fiq

.globl PUT32
PUT32:
    str r1,[r0]
    bx lr

.globl PUT16
PUT16:
    strh r1,[r0]
    bx lr

.globl PUT8
PUT8:
    strb r1,[r0]
    bx lr

.globl GET32
GET32:
    ldr r0,[r0]
    bx lr

.globl GETPC
GETPC:
    mov r0,lr
    bx lr

.globl BRANCHTO
BRANCHTO:
    bx r0

.globl dummy
dummy:
    bx lr
irq:
    b ctx_switch_from_irq


;@-------------------------------------------------------------------------
;@-------------------------------------------------------------------------


;@-------------------------------------------------------------------------
;@
;@ Copyright (c) 2012 David Welch dwelch@dwelch.com
;@
;@ Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
;@
;@ The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
;@
;@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
;@
;@-------------------------------------------------------------------------