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stadtx.py
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stadtx.py
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import peachpy.x86_64
k0U64 = 0xb89b0f8e1655514f
k1U64 = 0x8c6f736011bd5127
k2U64 = 0x8f29bd94edce7b39
k3U64 = 0x9c1b8e1e9628323f
k2U32 = 0x802910e3
k3U32 = 0x819b13af
k4U32 = 0x91cb27e5
k5U32 = 0xc1a269c1
def imul(r,k):
t = GeneralPurposeRegister64()
MOV(t, k)
IMUL(r, t)
def split(labels,v,l,h):
if l == h:
JMP(labels[l])
return
m = int((l+h)/2)
after = Label()
CMP(v, m)
JG(after)
split(labels,v, l,m)
LABEL(after)
split(labels,v,m+1,h)
state = Argument(ptr())
key_base = Argument(ptr())
key_len = Argument(int64_t)
key_cap = Argument(int64_t)
with Function("Hash", (state, key_base, key_len, key_cap), uint64_t) as function:
reg_state_ptr = GeneralPurposeRegister64()
LOAD.ARGUMENT(reg_state_ptr, state)
reg_ptr = GeneralPurposeRegister64()
reg_ptr_len = GeneralPurposeRegister64()
LOAD.ARGUMENT(reg_ptr, key_base)
LOAD.ARGUMENT(reg_ptr_len, key_len)
reg_v0 = GeneralPurposeRegister64()
reg_v1 = GeneralPurposeRegister64()
MOV(reg_v0, [reg_state_ptr])
MOV(reg_v1, [reg_state_ptr+8])
t = GeneralPurposeRegister64()
MOV(t, reg_ptr_len)
ADD(t, 1)
imul(t, k0U64)
XOR(reg_v0, t)
MOV(t, reg_ptr_len)
ADD(t, 2)
imul(t, k1U64)
XOR(reg_v1, t)
coreLong = Label("coreLong")
CMP(reg_ptr_len, 32)
JGE(coreLong)
reg_u64s = GeneralPurposeRegister64()
MOV(reg_u64s, reg_ptr_len)
SHR(reg_u64s, 3)
labels = [Label("shortCore%d" % i) for i in range(4)]
for i in range(4):
CMP(reg_u64s, i)
JE(labels[i])
for i in range(3, 0, -1):
LABEL(labels[i])
r = GeneralPurposeRegister64()
MOV(r, [reg_ptr])
imul(r, k3U64)
ADD(reg_v0, r)
ROR(reg_v0, 17)
XOR(reg_v0, reg_v1)
ROR(reg_v1, 53)
ADD(reg_v1, reg_v0)
ADD(reg_ptr,8)
SUB(reg_ptr_len,8)
LABEL(labels[0])
labels = [Label("shortTail%d" % i) for i in range(8)]
split(labels, reg_ptr_len,0,7)
after = Label("shortAfter")
reg_ch = GeneralPurposeRegister64()
LABEL(labels[7])
MOVZX(reg_ch, byte[reg_ptr+6])
SHL(reg_ch, 32)
ADD(reg_v0, reg_ch)
LABEL(labels[6])
MOVZX(reg_ch, byte[reg_ptr+5])
SHL(reg_ch, 48)
ADD(reg_v1, reg_ch)
LABEL(labels[5])
MOVZX(reg_ch, byte[reg_ptr+4])
SHL(reg_ch, 16)
ADD(reg_v0, reg_ch)
LABEL(labels[4])
XOR(reg_ch, reg_ch)
MOV(reg_ch.as_dword, dword[reg_ptr])
ADD(reg_v1, reg_ch)
JMP(after)
LABEL(labels[3])
MOVZX(reg_ch, byte[reg_ptr+2])
SHL(reg_ch, 48)
ADD(reg_v0, reg_ch)
LABEL(labels[2])
XOR(reg_ch, reg_ch)
MOV(reg_ch.as_word, word[reg_ptr])
ADD(reg_v1, reg_ch)
JMP(after)
LABEL(labels[1])
MOVZX(reg_ch, byte[reg_ptr])
ADD(reg_v0, reg_ch)
LABEL(labels[0])
ROR(reg_v1, 32)
XOR(reg_v1, 0xFF)
LABEL(after)
XOR(reg_v1, reg_v0)
ROR(reg_v0, 33)
ADD(reg_v0, reg_v1)
ROL(reg_v1, 17)
XOR(reg_v1, reg_v0)
ROL(reg_v0, 43)
ADD(reg_v0, reg_v1)
ROL(reg_v1, 31)
SUB(reg_v1, reg_v0)
ROL(reg_v0, 13)
XOR(reg_v0, reg_v1)
SUB(reg_v1, reg_v0)
ROL(reg_v0, 41)
ADD(reg_v0, reg_v1)
ROL(reg_v1, 37)
XOR(reg_v1, reg_v0)
ROR(reg_v0, 39)
ADD(reg_v0, reg_v1)
ROR(reg_v1, 15)
ADD(reg_v1, reg_v0)
ROL(reg_v0, 15)
XOR(reg_v0, reg_v1)
ROR(reg_v1, 5)
XOR(reg_v0, reg_v1)
RETURN(reg_v0)
LABEL(coreLong)
reg_v2 = GeneralPurposeRegister64()
reg_v3 = GeneralPurposeRegister64()
MOV(reg_v2, [reg_state_ptr+16])
MOV(reg_v3, [reg_state_ptr+24])
t = GeneralPurposeRegister64()
MOV(t, reg_ptr_len)
ADD(t, 3)
imul(t, k2U64)
XOR(reg_v2, t)
MOV(t, reg_ptr_len)
ADD(t, 4)
imul(t, k3U64)
XOR(reg_v3, t)
r = GeneralPurposeRegister64()
with Loop() as loop:
MOV(r, [reg_ptr])
imul(r, k2U32)
ADD(reg_v0, r)
ROL(reg_v0, 57)
XOR(reg_v0, reg_v3)
MOV(r, [reg_ptr + 8])
imul(r, k3U32)
ADD(reg_v1, r)
ROL(reg_v1, 63)
XOR(reg_v1, reg_v2)
MOV(r, [reg_ptr + 16])
imul(r, k4U32)
ADD(reg_v2, r)
ROR(reg_v2, 47)
ADD(reg_v2, reg_v0)
MOV(r, [reg_ptr + 24])
imul(r, k5U32)
ADD(reg_v3, r)
ROR(reg_v3, 11)
SUB(reg_v3, reg_v1)
ADD(reg_ptr, 32)
SUB(reg_ptr_len, 32)
CMP(reg_ptr_len, 32)
JGE(loop.begin)
reg_ptr_len_saved = GeneralPurposeRegister64()
MOV(reg_ptr_len_saved, reg_ptr_len)
reg_u64s = GeneralPurposeRegister64()
MOV(reg_u64s, reg_ptr_len)
SHR(reg_u64s, 3)
labels = [Label("longCore%d" % i) for i in range(4)]
for i in range(4):
CMP(reg_u64s, i)
JE(labels[i])
LABEL(labels[3])
MOV(r, [reg_ptr])
imul(r, k2U32)
ADD(reg_v0, r)
ROL(reg_v0, 57)
XOR(reg_v0, reg_v3)
ADD(reg_ptr, 8)
SUB(reg_ptr_len, 8)
LABEL(labels[2])
MOV(r, [reg_ptr])
imul(r, k3U32)
ADD(reg_v1, r)
ROL(reg_v1, 63)
XOR(reg_v1, reg_v2)
ADD(reg_ptr, 8)
SUB(reg_ptr_len, 8)
LABEL(labels[1])
MOV(r, [reg_ptr])
imul(r, k4U32)
ADD(reg_v2, r)
ROR(reg_v2, 47)
ADD(reg_v2, reg_v0)
ADD(reg_ptr, 8)
SUB(reg_ptr_len, 8)
LABEL(labels[0])
ROR(reg_v3, 11)
SUB(reg_v3, reg_v1)
ADD(reg_ptr_len_saved, 1)
imul(reg_ptr_len_saved, k3U64)
XOR(reg_v0, reg_ptr_len_saved)
labels = [Label("longTail%d" % i) for i in range(8)]
split(labels, reg_ptr_len, 0, 7)
after = Label("longAfter")
reg_ch = GeneralPurposeRegister64()
LABEL(labels[7])
MOVZX(reg_ch, byte[reg_ptr+6])
ADD(reg_v1, reg_ch)
LABEL(labels[6])
XOR(reg_ch, reg_ch)
MOV(reg_ch.as_word, word[reg_ptr + 4])
ADD(reg_v2, reg_ch)
MOV(reg_ch.as_dword, dword[reg_ptr])
ADD(reg_v3, reg_ch)
JMP(after)
LABEL(labels[5])
MOVZX(reg_ch, byte[reg_ptr+4])
ADD(reg_v1, reg_ch)
LABEL(labels[4])
XOR(reg_ch, reg_ch)
MOV(reg_ch.as_dword, dword[reg_ptr])
ADD(reg_v2, reg_ch)
JMP(after)
LABEL(labels[3])
MOVZX(reg_ch, byte[reg_ptr+2])
ADD(reg_v3, reg_ch)
LABEL(labels[2])
XOR(reg_ch, reg_ch)
MOV(reg_ch.as_word, word[reg_ptr])
ADD(reg_v1, reg_ch)
JMP(after)
LABEL(labels[1])
MOVZX(reg_ch, byte[reg_ptr])
ADD(reg_v2, reg_ch)
LABEL(labels[0])
ROL(reg_v3, 32)
XOR(reg_v3, 0xFF)
LABEL(after)
## finalize
SUB(reg_v1, reg_v2)
ROR(reg_v0, 19)
SUB(reg_v1, reg_v0)
ROR(reg_v1, 53)
XOR(reg_v3, reg_v1)
SUB(reg_v0, reg_v3)
ROL(reg_v3, 43)
ADD(reg_v0, reg_v3)
ROR(reg_v0, 3)
SUB(reg_v3, reg_v0)
ROR(reg_v2, 43)
SUB(reg_v2, reg_v3)
ROL(reg_v2, 55)
XOR(reg_v2, reg_v0)
SUB(reg_v1, reg_v2)
ROR(reg_v3, 7)
SUB(reg_v3, reg_v2)
ROR(reg_v2, 31)
ADD(reg_v3, reg_v2)
SUB(reg_v2, reg_v1)
ROR(reg_v3, 39)
XOR(reg_v2, reg_v3)
ROR(reg_v3, 17)
XOR(reg_v3, reg_v2)
ADD(reg_v1, reg_v3)
ROR(reg_v1, 9)
XOR(reg_v2, reg_v1)
ROL(reg_v2, 24)
XOR(reg_v3, reg_v2)
ROR(reg_v3, 59)
ROR(reg_v0, 1)
SUB(reg_v0, reg_v1)
XOR(reg_v0, reg_v1)
XOR(reg_v2, reg_v3)
XOR(reg_v0, reg_v2)
RETURN(reg_v0)