# The Lord of the Rings: War in the North - Legacy Edition 1.0.1
# BID: B18F4EAC4D5148A1
# INFO: RenderThreadWaitOnGPU blocks game to 59 FPS and causes CPU cores to rampage if not adjusted, but if adjusted to allow perfect 60 FPS image starts tearing, so i decided to not change it

DECLARATIONS:
  -
    type: variable
    name: frametime
    value_type: uint32
    default_value: 33333
    evaluate: 1000000 / FPS_LOCK_TARGET
  -
    type: variable
    name: half_frametime
    value_type: float
    default_value: 0.01665
    evaluate: 0.999 * (1 / FPS_TARGET)
  -
    type: code
    name: sleep
    instructions: [
      [adrp, x26, $frametime],
      [ldr, w26, [x26, $frametime]],
      [sub, w24, w26, 1],
      [cmp, x0, x24],
      [b, 0x1B6DD8]
    ]
  -
    type: code
    name: sleep2
    instructions: [
      [adrp, x26, $frametime],
      [ldr, w26, [x26, $frametime]],
      [sub, w24, w26, 1],
      [cmp, x0, x24],
      [b, 0x1B6D30]
    ]
  -
    type: code
    name: gpuSleep
    instructions: [
      [mov, x0, -2],
      [svc, 0xB],
      [mov, x0, 10000],
      [svc, 0xB],
      [ret]
    ]
MASTER_WRITE:
  # RenderThreadWaitOnMainThread, main FPS lock
  # REF: 98 46 90 52 BA 46 90 52, search for CMP X0, X24
  -
    type: asm_a64
    main_offset: 0x1B6DD4
    instructions: [
      [b, _sleep()]
    ]
  -
    type: asm_a64
    main_offset: 0x1B6D2C
    instructions: [
      [b, _sleep2()]
    ]
  # RenderThreadWaitOnGPU
  # REF: A8 B2 8C 52 08 91 A7 72
  -
    type: asm_a64
    main_offset: 0x25C998
    instructions: [
      [adrp, x8, $half_frametime],
      [ldr, w8, [x8, $half_frametime]]
    ]
  # Stabilize CPU usage
  -
    type: asm_a64
    main_offset: 0x25C9B0
    instructions: [
      [bl, _gpuSleep()]
    ]
ALL_FPS:
  -
    type: block
    what: timing