4 files changed, 0 insertions, 155 deletions
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 7f63807..0000000
--- a/Makefile
+++ /dev/null
@@ -1,14 +0,0 @@
-BINS = day01
-
-all: $(BINS)
-
-%: %.o
-	ld -o $@ $<
-
-%.o: %.asm sys.asm lib.asm
-	nasm -f elf64 -o $@ $<
-
-clean:
-	rm -f $(BINS)
-
-.PHONY: clean
diff --git a/day01.asm b/day01.asm
deleted file mode 100644
index 083f971..0000000
--- a/day01.asm
+++ /dev/null
@@ -1,76 +0,0 @@
-%include "sys.asm"
-%include "lib.asm"
-
-%define rPosX r8
-%define rPosY r9
-%define rDirX r10
-%define rDirY r11
-
-global _start
-_start:
-  sub rsp, 4096
-  syscall SYS_READ, FD_STDIN, rsp, 4096
-  mov rdi, rax ;; Length.
-  xor rcx, rcx ;; Index.
-
-  xor rPosX, rPosX
-  xor rPosY, rPosY
-  xor rDirX, rDirX
-  mov rDirY, -1 ;; North.
-
-  .loopTurn:
-    cmp byte [rsp + rcx], 'L'
-    jne .right
-    .left: ;; L(dx, dy) = (dy, -dx)
-      neg rDirX
-      jmp .swap
-    .right: ;; R(dx, dy) = (-dy, dx)
-      neg rDirY
-    .swap:
-    xchg rDirX, rDirY
-
-    xor rax, rax
-    .loopDigit:
-      inc rcx
-      movzx rdx, byte [rsp + rcx]
-      cmp dl, '0'
-      jb .breakDigit
-
-      ;; rax = rax * 10 + rdx - '0'
-      shl rax, 1
-      lea rax, [rax + rax * 4 - '0']
-      add rax, rdx
-    jmp .loopDigit
-    .breakDigit:
-    add rcx, 2 ;; Discard comma and space.
-
-    mov rdx, rax
-    imul rdx, rDirX
-    add rPosX, rdx
-
-    mov rdx, rax
-    imul rdx, rDirY
-    add rPosY, rdx
-
-  cmp rcx, rdi
-  jb .loopTurn
-
-  ;; abs(x) = (x ^ (x >> 63)) - (x >> 63)
-  mov rax, rPosX
-  sar rax, 63
-  xor rPosX, rax
-  sub rPosX, rax
-
-  mov rax, rPosY
-  sar rax, 63
-  xor rPosY, rax
-  sub rPosY, rax
-
-  push `\n`
-  lea rdi, [rPosX + rPosY]
-  call hex32
-  push rax
-  syscall SYS_WRITE, FD_STDOUT, rsp, 9
-
-  xor rax, rax
-syscall SYS_EXIT, rax
diff --git a/lib.asm b/lib.asm
deleted file mode 100644
index 22bf196..0000000
--- a/lib.asm
+++ /dev/null
@@ -1,19 +0,0 @@
-section .rodata
-hexDigits: db '0123456789abcdef'
-
-section .text
-hex32:
-  push rbx
-  mov rbx, hexDigits
-  xor rax, rax
-
-%rep 8
-  shl rax, 8
-  mov al, dil
-  and al, 0x0f
-  xlatb
-  shr rdi, 4
-%endrep
-
-  pop rbx
-ret
diff --git a/sys.asm b/sys.asm
deleted file mode 100644
index 8f03f5f..0000000
--- a/sys.asm
+++ /dev/null
@@ -1,46 +0,0 @@
-%macro syscall 0
-  syscall
-%endmacro
-
-%macro syscall 1
-  mov rax, %1
-  syscall
-%endmacro
-
-%macro syscall 2
-  mov rdi, %2
-  syscall %1
-%endmacro
-
-%macro syscall 3
-  mov rsi, %3
-  syscall %1, %2
-%endmacro
-
-%macro syscall 4
-  mov rdx, %4
-  syscall %1, %2, %3
-%endmacro
-
-%macro syscall 5
-  mov r10, %5
-  syscall %1, %2, %3, %4
-%endmacro
-
-%macro syscall 6
-  mov r8, %6
-  syscall %1, %2, %3, %4, %5
-%endmacro
-
-%macro syscall 7
-  mov r9, %7
-  syscall %1, %2, %3, %4, %5, %6
-%endmacro
-
-SYS_READ   equ 0
-SYS_WRITE  equ 1
-SYS_EXIT   equ 60
-
-FD_STDIN  equ 0
-FD_STDOUT equ 1
-FD_STDERR equ 2