kmemset and kmemcpy cdecl16 versions
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@@ -17,37 +17,35 @@
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; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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; SOFTWARE.
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%include 'cdecl16.inc'
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; uint8_t* kmemset(void* dest, uint8_t val, size_t len);
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; uint8_t* kmemset(void* dest, uint8_t val, uint8_t len);
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kmemset:
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push di ; function uses di, so save it.
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mov cx, [bp - 2] ; size_t len
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mov al, [bp - 4] ; uint8_t val
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mov di, [bp - 6] ; void * ptr
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__CDECL16_ENTRY
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.func:
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mov cx, [bp + 8] ; size_t len
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mov al, [bp + 6] ; uint8_t val
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mov di, [bp + 4] ; void * ptr
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cld
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rep stosb
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.endf:
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mov ax, [bp - 6] ; return pointer to dest
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pop di ; restore di
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mov ax, di ; return pointer to dest
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.endp:
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__CDECL16_EXIT
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ret
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; uint8_t* kmemset(uint8_t* dest, uint8_t* src, size_t len);
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; uint8_t* kmemset(uint8_t* dest, uint8_t* src, uint8_t len);
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; not overlap safe
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kmemcpy:
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push di
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push si ; di, si are callee save
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mov cx, [bp - 2] ; length
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mov si, [bp - 4] ; source
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mov di, [bp - 6] ; dest
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__CDECL16_ENTRY
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.func:
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mov cx, [bp + 8] ; len
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mov si, [bp + 6] ; src
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mov di, [bp + 4] ; dest
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cld ; ensure we are incrementing
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rep movsb
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mov ax, di ; return pointer to dest
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.endf:
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mov ax, [bp - 6] ; return pointer to dest
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pop si
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pop di
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__CDECL16_EXIT
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ret
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