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%ifndef ALLOC_INC
%define ALLOC_INC
%ifndef SYS_INC
%include "sys.inc"
%endif
_alloc:
xor rdi, rdi ; Let Kernel give Address
mov rdx, 3 ; PROT_READ | PROT_WRITE
mov r10, 0x1002 ; MAP_PRIVATE | MAP_ANONYMOUS
xor r8, r8 ; fd = -1, Not backed by a file
xor r9, r9 ; offset = 0
mov rax, SYS_MMAP
syscall
ret
%macro alloc 0-1 rax
%if "%1" != "%rsi"
mov rsi, %1 ; Size to allocate
%endif
call _alloc
%endm
_free:
mov rax, SYS_MUNMAP
syscall
ret
%macro free 1-2 rax
%if "%1" != "%rdi"
mov rdi, %1 ; Address to free
%endif
%if "%1" != "%rsi"
mov rsi, %2 ; Size allocated
%endif
call _free
%endm
%endif
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