135 lines
3.0 KiB
ArmAsm
135 lines
3.0 KiB
ArmAsm
|
|
;@-------------------------------------------------------------------------
|
|
;@-------------------------------------------------------------------------
|
|
|
|
|
|
.globl _start
|
|
_start:
|
|
b reset
|
|
b undef
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
bl other
|
|
|
|
reset:
|
|
|
|
;@ enable fpu
|
|
mrc p15, 0, r0, c1, c0, 2
|
|
orr r0,r0,#0x300000 ;@ single precision
|
|
orr r0,r0,#0xC00000 ;@ double precision
|
|
mcr p15, 0, r0, c1, c0, 2
|
|
mov r0,#0x40000000
|
|
fmxr fpexc,r0
|
|
|
|
;@ (PSR_UND_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
|
|
mov r0,#0xDB
|
|
msr cpsr_c,r0
|
|
mov sp,#0x00100000
|
|
|
|
;@ (PSR_SVC_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
|
|
mov r0,#0xD3
|
|
msr cpsr_c,r0
|
|
|
|
mov sp,#0x00200000
|
|
bl notmain
|
|
hang: b hang
|
|
|
|
other:
|
|
mov sp,#0x00100000
|
|
push {lr}
|
|
ldr r0,=0xBADBAD
|
|
bl hexstring
|
|
pop {r0}
|
|
bl hexstring
|
|
b hang
|
|
|
|
undef:
|
|
push {r0}
|
|
mov r0,#0x40000000
|
|
fmxr fpexc,r0
|
|
pop {r0}
|
|
subs pc,lr,#4
|
|
|
|
|
|
;@undef:
|
|
mov sp,#0x00100000
|
|
ldr r1,[lr,#-4]
|
|
push {r1}
|
|
ldr r0,=0xBAD
|
|
bl hexstring
|
|
pop {r0}
|
|
bl hexstring
|
|
b hang
|
|
|
|
.globl PUT32
|
|
PUT32:
|
|
str r1,[r0]
|
|
bx lr
|
|
|
|
.globl GET32
|
|
GET32:
|
|
ldr r0,[r0]
|
|
bx lr
|
|
|
|
.globl dummy
|
|
dummy:
|
|
bx lr
|
|
|
|
|
|
.globl m4add
|
|
m4add:
|
|
vmov s0,r0
|
|
vmov s1,r1
|
|
vmov s2,r2
|
|
vmov s3,r3
|
|
vadd.f32 s4,s0,s1
|
|
vadd.f32 s5,s2,s3
|
|
vmov r0,s5
|
|
bx lr
|
|
|
|
.globl m4add2
|
|
m4add2:
|
|
vmov s0,r0
|
|
vmov s1,r1
|
|
vmov s2,r2
|
|
vmov s3,r3
|
|
vadd.f32 s4,s0,s1
|
|
vadd.f32 s5,s2,s3
|
|
vmov r0,s4
|
|
bx lr
|
|
|
|
.globl m4vmov
|
|
m4vmov:
|
|
vmov s4,r0
|
|
vmov s5,r0
|
|
bx lr
|
|
|
|
|
|
|
|
;@-------------------------------------------------------------------------
|
|
;@-------------------------------------------------------------------------
|
|
|
|
|
|
;@-------------------------------------------------------------------------
|
|
;@
|
|
;@ 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.
|
|
;@
|
|
;@-------------------------------------------------------------------------
|