Fix #304

Replace inline assembly with GAS.

arch/x64/linux/memory/copy.S

@@ -0,0 +1,67 @@
+	.text
+
+/*
+ * copyMemory.
+ *
+ * rdi - source length
+ * rsi - source data.
+ * rdx - target length.
+ * rcx - target data.
+ */
+	.globl _D5tanya6memory2op10copyMemoryFNaNbNixAvAvZv
+	.type _D5tanya6memory2op10copyMemoryFNaNbNixAvAvZv, @function
+
+_D5tanya6memory2op10copyMemoryFNaNbNixAvAvZv:
+		mov %rdi, %rdx
+		mov %rcx, %rdi
+
+		cmp  $0x08, %rdx
+		jc aligned_1
+		test $0x07, %edi
+		jz aligned_8
+
+	naligned:
+		movsb
+		dec  %rdx
+		test $0x07, %edi
+		jnz naligned
+
+	aligned_8:
+		mov %rdx,  %rcx
+		shr $0x03, %rcx
+		rep movsq
+		and $0x07, %edx
+		jz end
+
+	aligned_1:
+		// Write the remaining bytes
+		mov %rdx, %rcx
+		rep movsb
+
+	end:
+		ret
+
+/*
+ * moveMemory.
+ *
+ * rdi - source length
+ * rsi - source data.
+ * rdx - target length.
+ * rcx - target data.
+ */
+	.globl _D5tanya6memory2op10moveMemoryFNaNbNixAvAvZv
+	.type _D5tanya6memory2op10moveMemoryFNaNbNixAvAvZv, @function
+
+_D5tanya6memory2op10moveMemoryFNaNbNixAvAvZv:
+		mov %rdi, %rdx
+
+		lea -1(%rdx, %rsi), %rsi
+		lea -1(%rdx, %rcx), %rdi
+		mov %rdx, %rcx
+
+		std // Set the direction flag
+
+		rep movsb
+
+		cld // Clear the direction flag
+		ret