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package runtime
foreign import kernel32 "system:Kernel32.lib"
@(private)
foreign kernel32 {
RaiseException :: proc "stdcall" (dwExceptionCode, dwExceptionFlags, nNumberOfArguments: u32, lpArguments: ^uint) -> ! ---
}
windows_trap_array_bounds :: proc "contextless" () -> ! {
EXCEPTION_ARRAY_BOUNDS_EXCEEDED :: 0xC000008C;
RaiseException(EXCEPTION_ARRAY_BOUNDS_EXCEEDED, 0, 0, nil);
}
windows_trap_type_assertion :: proc "contextless" () -> ! {
windows_trap_array_bounds();
}
// @private
// @(link_name="_tls_index")
// _tls_index: u32;
// @private
// @(link_name="_fltused")
// _fltused: i32 = 0x9875;
// @(link_name="memcpy")
memcpy :: proc "c" (dst, src: rawptr, len: int) -> rawptr {
foreign kernel32 {
RtlCopyMemory :: proc "c" (dst, src: rawptr, len: int) ---
}
if dst == nil || src == nil || len == 0 {
return dst;
}
RtlCopyMemory(dst, src, len);
return dst;
}
// @(link_name="memmove")
memmove :: proc "c" (dst, src: rawptr, len: int) -> rawptr {
foreign kernel32 {
RtlMoveMemory :: proc "c" (dst, src: rawptr, len: int) ---
}
if dst == nil || src == nil || len == 0 {
return dst;
}
RtlMoveMemory(dst, src, len);
return dst;
}
// @(link_name="memset")
memset :: proc "c" (ptr: rawptr, val: i32, len: int) -> rawptr {
if ptr == nil || len == 0 {
return ptr;
}
b := byte(val);
p_start := uintptr(ptr);
p_end := p_start + uintptr(max(len, 0));
for p := p_start; p < p_end; p += 1 {
(^byte)(p)^ = b;
}
return ptr;
}
// @(link_name="memcmp")
// memcmp :: proc "c" (dst, src: rawptr, len: int) -> i32 {
// if dst == nil || src == nil {
// return 0;
// }
// if dst == src {
// return 0;
// }
// d, s := uintptr(dst), uintptr(src);
// n := uintptr(len);
// for i := uintptr(0); i < n; i += 1 {
// x, y := (^byte)(d+i)^, (^byte)(s+i)^;
// if x != y {
// return x < y ? -1 : +1;
// }
// }
// return 0;
// }
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