mirror of
https://github.com/fail0verflow/mini.git
synced 2024-11-30 23:24:19 +01:00
131 lines
1.8 KiB
ArmAsm
131 lines
1.8 KiB
ArmAsm
.globl v_undf
|
|
.globl v_swi
|
|
.globl v_instr_abrt
|
|
.globl v_data_abrt
|
|
.globl v_reserved
|
|
.globl v_fiq
|
|
|
|
.globl exc_setup_stack
|
|
.extern __excstack_addr
|
|
.extern exc_handler
|
|
|
|
exc_setup_stack:
|
|
mrs r0, cpsr
|
|
|
|
@ Switch to FIQ mode
|
|
msr cpsr_c, #0xd1
|
|
@ Setup exception stack
|
|
ldr sp, =__excstack_addr
|
|
|
|
@ Switch to SVC mode
|
|
msr cpsr_c, #0xd3
|
|
@ Setup exception stack
|
|
ldr sp, =__excstack_addr
|
|
|
|
@ Switch to ABORT mode
|
|
msr cpsr_c, #0xd7
|
|
@ Setup exception stack
|
|
ldr sp, =__excstack_addr
|
|
|
|
@ Switch to UNDF mode
|
|
msr cpsr_c, #0xdb
|
|
@ Setup exception stack
|
|
ldr sp, =__excstack_addr
|
|
|
|
@ Restore mode
|
|
msr cpsr_c, r0
|
|
bx lr
|
|
|
|
.pool
|
|
|
|
v_undf:
|
|
stmfd sp!, {lr}
|
|
stmfd sp, {r0-lr}^
|
|
sub sp, sp, #0x3c
|
|
mov r2, sp
|
|
mrs r1, spsr
|
|
mov r0, #1
|
|
|
|
blx exc_handler
|
|
|
|
ldmfd sp!, {r0-r12}
|
|
add sp, sp, #8
|
|
ldmfd sp!, {lr}
|
|
movs pc, lr
|
|
|
|
v_swi:
|
|
stmfd sp!, {lr}
|
|
stmfd sp, {r0-lr}^
|
|
sub sp, sp, #0x3c
|
|
mov r2, sp
|
|
mrs r1, spsr
|
|
mov r0, #2
|
|
|
|
blx exc_handler
|
|
|
|
ldmfd sp!, {r0-r12}
|
|
add sp, sp, #8
|
|
ldmfd sp!, {lr}
|
|
movs pc, lr
|
|
|
|
v_instr_abrt:
|
|
stmfd sp!, {lr}
|
|
stmfd sp, {r0-lr}^
|
|
sub sp, sp, #0x3c
|
|
mov r2, sp
|
|
mrs r1, spsr
|
|
mov r0, #3
|
|
|
|
blx exc_handler
|
|
|
|
ldmfd sp!, {r0-r12}
|
|
add sp, sp, #8
|
|
ldmfd sp!, {lr}
|
|
subs pc, lr, #4
|
|
|
|
v_data_abrt:
|
|
stmfd sp!, {lr}
|
|
stmfd sp, {r0-lr}^
|
|
sub sp, sp, #0x3c
|
|
mov r2, sp
|
|
mrs r1, spsr
|
|
mov r0, #4
|
|
|
|
blx exc_handler
|
|
|
|
ldmfd sp!, {r0-r12}
|
|
add sp, sp, #8
|
|
ldmfd sp!, {lr}
|
|
subs pc, lr, #8
|
|
|
|
v_reserved:
|
|
stmfd sp!, {lr}
|
|
stmfd sp, {r0-lr}^
|
|
sub sp, sp, #0x3c
|
|
mov r2, sp
|
|
mrs r1, spsr
|
|
mov r0, #5
|
|
|
|
blx exc_handler
|
|
|
|
ldmfd sp!, {r0-r12}
|
|
add sp, sp, #8
|
|
ldmfd sp!, {lr}
|
|
movs pc, lr
|
|
|
|
v_fiq:
|
|
stmfd sp!, {lr}
|
|
stmfd sp, {r0-lr}^
|
|
sub sp, sp, #0x3c
|
|
mov r2, sp
|
|
mrs r1, spsr
|
|
mov r0, #7
|
|
|
|
blx exc_handler
|
|
|
|
ldmfd sp!, {r0-r12}
|
|
add sp, sp, #8
|
|
ldmfd sp!, {lr}
|
|
subs pc, lr, #4
|
|
|