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comment "subroutine prologue"
.macro gdbasm_enter
push %rbp
mov %rsp,%rbp
.endm
comment "subroutine epilogue"
.macro gdbasm_leave
pop %rbp
ret
.endm
.macro gdbasm_call subr
call \subr
.endm
.macro gdbasm_several_nops
nop
nop
nop
nop
.endm
comment "exit (0)"
.macro gdbasm_exit0
hlt
.endm
comment "crt0 startup"
.macro gdbasm_startup
xor %rbp, %rbp
.endm
comment "Declare a data variable"
.purgem gdbasm_datavar
.macro gdbasm_datavar name value
.data
\name:
.long \value
.endm