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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
.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
ldi fp,#0
.endm