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# Must be included at the top of the file
asm "extern malloc, realloc, free, printf, open, close, read, write"
{}uint8 _alert = "Alert!\n\0"
{}uint8 _dec = "%d\n\0"
{}uint8 _ptr = "%p\n\0"
~void NULL = 0
/; _alloc (uint size) [~void]
~void out
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# Mov size into proper register, and set all extras to zero
asm "mov rdi, r10"
asm "mov rsi, 0"
asm "xor rax, rax"
# Do call
asm "call malloc wrt ..plt"
# Set out to the returned value
# (The compiler assignes spaces sequentially, and we have a uint in r10)
asm "mov r11, rax"
return out
;/
/; _realloc (~void ptr, uint new_size) [~void]
~void out
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# Mov ptr and new size into proper registers, and set all extras to zero
asm "mov rdi, r10"
asm "mov rsi, r11"
asm "xor rax, rax"
# Do call
asm "call realloc wrt ..plt"
# Set out to the returned value
# (The compiler assignes spaces sequentially. We have a ptr in r10, and a uint in r11)
asm "mov r12, rax"
return out
;/
/; _delete (~void ptr)
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# setup call by clearing most values
asm "mov rdi, r10"
asm "mov rsi, 0"
asm "xor rax, rax"
# do call
asm "call free wrt ..plt"
# there's no more to do 'cause free returns nothing
;/
/; _printf (~void str)
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# setup call by clearing most values
asm "mov rdi, r10"
asm "xor rsi, rsi"
asm "xor rax, rax"
# do call
asm "call printf wrt ..plt"
# there's no more to do 'cause printf returns nothing
;/
/; _print_num (~void str, int num)
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# setup call by clearing most values
asm "mov rdi, r10"
asm "mov rsi, r11"
asm "xor rax, rax"
# do call
asm "call printf wrt ..plt"
# there's no more to do 'cause printf returns nothing
;/
# Create file for writing (overwrite)
/; _create_file (~void name) [~void]
~void out
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# Do call
asm "mov rdi, r10"
asm "mov rsi, 0q1102"
asm "mov rdx, 0q700"
asm "call open wrt ..plt"
# Set out to the returned value
# (The compiler assignes spaces sequentially. We have a ptr in r8)
asm "mov r11, rax"
return out
;/
# Open file for reading or writing (no overwrite)
/; _open_file (~void name) [~void]
~void out
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# Do syscall
asm "mov rdi, r10"
asm "mov rsi, 2"
asm "mov rdx, 0q700"
asm "call open wrt ..plt"
# Set out to the returned value
# (The compiler assignes spaces sequentially. We have a ptr in r8, and a uint in r9)
asm "mov r11, rax"
return out
;/
/; _close_file (~void handle)
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# Do syscall
asm "mov rdi, r10"
asm "call close wrt ..plt"
;/
/; _read_byte (~void handle, ~uint8 byte) [int]
int out
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# Do syscall
asm "mov rdi, r10" # handle
asm "mov rsi, r11" # buffer
asm "mov rdx, 1" # one byte
asm "call read wrt ..plt"
# return number of bytes read
asm "mov r12, rax"
return out
;/
/; _write_byte (~void handle, ~uint8 byte) [int]
int out
asm "mov rax, rsp"
asm "xor rdx, rdx"
asm "mov rcx, 16"
asm "div rcx"
asm "sub rsp, rdx"
asm "sub rsp, 128"
# Do syscall
asm "mov rdi, r10" # handle
asm "mov rsi, r11" # buffer
asm "mov rdx, 1" # one byte
asm "call write wrt ..plt"
asm "mov r12, rax"
return out
;/
/; print_alert
_printf(~_alert{0})
;/
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