36 lines
505 B
PHP
36 lines
505 B
PHP
|
comment "subroutine prologue"
|
||
|
|
.macro gdbasm_enter
|
||
|
|
push fp -> push lr
|
||
|
|
addi sp,#-4 -> mv fp,sp
|
||
|
|
.endm
|
||
|
|
|
||
|
|
comment "subroutine epilogue"
|
||
|
|
.macro gdbasm_leave
|
||
|
|
addi sp,#4 -> pop lr
|
||
|
|
pop fp -> jmp lr
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro gdbasm_call subr
|
||
|
|
bl \subr -> nop
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro gdbasm_several_nops
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
.endm
|
||
|
|
|
||
|
|
comment "exit (0)"
|
||
|
|
.macro gdbasm_exit0
|
||
|
|
ldi r0,#1 -> ldi r1,#0
|
||
|
|
ldi r2,#0 -> ldi r3,#0
|
||
|
|
trap #0 -> nop
|
||
|
|
.endm
|
||
|
|
|
||
|
|
comment "crt0 startup"
|
||
|
|
.macro gdbasm_startup
|
||
|
|
ld24 sp,_stack
|
||
|
|
ldi fp,#0
|
||
|
|
.endm
|