OoT - Power Crouch Stab explained

At Link's Instance + 0x4EC, there is a 4-byte bit field which determines the type of attack Link has most recently used, for the sword, stick, and hammer items. Slashing or jumpslashing with one of those items writes different values to the bitfield.

-When you load a new scene, that bit field gets set to the default value of 00000100 (Kokiri Sword Slash / Broken Giant's Knife Slash).
-Performing any of the attacks listed below will set this bit field to the corresponding value. Quickspins set the same value as a slash.
-Performing a crouch stab attack will not change the value of the bit field. Crouch stabs will use the last value stored in that bit field to calculate its damage.

00000001
00000002	Deku Stick Slash
00000004
00000008
00000010
00000020
00000040	Hammer Swing
00000080
00000100	Kokiri Sword Slash / Broken Giant's Knife Slash
00000200	Master Sword Slash
00000400	Biggoron Sword Slash / Giant's Knife Slash
00000800
00001000
00002000
00004000
00008000
00010000
00020000
00040000
00080000
00100000
00200000
00400000
00800000
01000000
02000000	Kokiri Sword Jump Attack / Broken Giant's Knife Jump Attack
04000000	Biggoron Sword Jump Attack / Giant's Knife Jump Attack
08000000	Master Sword Jump Attack / Deku Stick Jump Attack
10000000
20000000
40000000	Hammer Jump Attack
80000000

For more information on enemy damage, check this page: https://wiki.cloudmodding.com/oot/Damage_Charts#Damage_Chart