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; AesOpt.asm -- Intel's AES.↩
; 2009-12-12 : Igor Pavlov : Public domain↩
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include 7zAsm.asm↩
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MY_ASM_START↩
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ifndef x64↩
.xmm↩
endif↩
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ifdef x64↩
num equ r8↩
else↩
num equ [r4 + REG_SIZE * 4]↩
endif↩
↩
rD equ r2↩
rN equ r0↩
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MY_PROLOG macro reg:req↩
ifdef x64↩
movdqa [r4 + 8], xmm6↩
movdqa [r4 + 8 + 16], xmm7↩
endif↩
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push r3↩
push r5↩
push r6↩
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mov rN, num↩
mov x6, [r1 + 16]↩
shl x6, 5↩
↩
movdqa reg, [r1]↩
add r1, 32↩
endm↩
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MY_EPILOG macro↩
pop r6↩
pop r5↩
pop r3↩
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ifdef x64↩
movdqa xmm6, [r4 + 8]↩
movdqa xmm7, [r4 + 8 + 16]↩
endif↩
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MY_ENDP↩
endm↩
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ways equ 4↩
ways16 equ (ways * 16)↩
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OP_W macro op, op2↩
i = 0↩
rept ways↩
op @CatStr(xmm,%i), op2↩
i = i + 1↩
endm↩
endm↩
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LOAD_OP macro op:req, offs:req↩
op xmm0, [r1 + r3 offs]↩
endm↩
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LOAD_OP_W macro op:req, offs:req↩
movdqa xmm7, [r1 + r3 offs]↩
OP_W op, xmm7↩
endm↩
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; ---------- AES-CBC Decode ----------↩
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CBC_DEC_UPDATE macro reg, offs↩
pxor reg, xmm6↩
movdqa xmm6, [rD + offs]↩
movdqa [rD + offs], reg↩
endm↩
↩
DECODE macro op:req↩
op aesdec, +16↩
@@:↩
op aesdec, +0↩
op aesdec, -16↩
sub x3, 32↩
jnz @B↩
op aesdeclast, +0↩
endm↩
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MY_PROC AesCbc_Decode_Intel, 3↩
MY_PROLOG xmm6↩
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sub x6, 32↩
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jmp check2↩
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align 16↩
nextBlocks2:↩
mov x3, x6↩
OP_W movdqa, [rD + i * 16]↩
LOAD_OP_W pxor, +32↩
DECODE LOAD_OP_W↩
OP_W CBC_DEC_UPDATE, i * 16↩
add rD, ways16↩
check2:↩
sub rN, ways↩
jnc nextBlocks2↩
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add rN, ways↩
jmp check↩
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nextBlock:↩
mov x3, x6↩
movdqa xmm1, [rD]↩
LOAD_OP movdqa, +32↩
pxor xmm0, xmm1↩
DECODE LOAD_OP↩
pxor xmm0, xmm6↩
movdqa [rD], xmm0↩
movdqa xmm6, xmm1↩
add rD, 16↩
check:↩
sub rN, 1↩
jnc nextBlock↩
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movdqa [r1 - 32], xmm6↩
MY_EPILOG↩
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; ---------- AES-CBC Encode ----------↩
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ENCODE macro op:req↩
op aesenc, -16↩
@@:↩
op aesenc, +0↩
op aesenc, +16↩
add r3, 32↩
jnz @B↩
op aesenclast, +0↩
endm↩
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MY_PROC AesCbc_Encode_Intel, 3↩
MY_PROLOG xmm0↩
↩
add r1, r6↩
neg r6↩
add r6, 32↩
↩
jmp check_e↩
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align 16↩
nextBlock_e:↩
mov r3, r6↩
pxor xmm0, [rD]↩
pxor xmm0, [r1 + r3 - 32]↩
ENCODE LOAD_OP↩
movdqa [rD], xmm0↩
add rD, 16↩
check_e:↩
sub rN, 1↩
jnc nextBlock_e↩
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movdqa [r1 + r6 - 64], xmm0↩
MY_EPILOG↩
↩
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; ---------- AES-CTR ----------↩
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XOR_UPD_1 macro reg, offs↩
pxor reg, [rD + offs]↩
endm↩
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XOR_UPD_2 macro reg, offs↩
movdqa [rD + offs], reg↩
endm↩
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MY_PROC AesCtr_Code_Intel, 3↩
MY_PROLOG xmm6↩
↩
mov r5, r4↩
shr r5, 4↩
dec r5↩
shl r5, 4↩
↩
mov DWORD PTR [r5], 1↩
mov DWORD PTR [r5 + 4], 0↩
mov DWORD PTR [r5 + 8], 0↩
mov DWORD PTR [r5 + 12], 0↩
↩
add r1, r6↩
neg r6↩
add r6, 32↩
↩
jmp check2_c↩
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align 16↩
nextBlocks2_c:↩
movdqa xmm7, [r5]↩
↩
i = 0↩
rept ways↩
paddq xmm6, xmm7↩
movdqa @CatStr(xmm,%i), xmm6↩
i = i + 1↩
endm↩
↩
mov r3, r6↩
LOAD_OP_W pxor, -32↩
ENCODE LOAD_OP_W↩
OP_W XOR_UPD_1, i * 16↩
OP_W XOR_UPD_2, i * 16↩
add rD, ways16↩
check2_c:↩
sub rN, ways↩
jnc nextBlocks2_c↩
↩
add rN, ways↩
jmp check_c↩
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nextBlock_c:↩
paddq xmm6, [r5]↩
mov r3, r6↩
movdqa xmm0, [r1 + r3 - 32]↩
pxor xmm0, xmm6↩
ENCODE LOAD_OP↩
XOR_UPD_1 xmm0, 0↩
XOR_UPD_2 xmm0, 0↩
add rD, 16↩
check_c:↩
sub rN, 1↩
jnc nextBlock_c↩
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movdqa [r1 + r6 - 64], xmm6↩
MY_EPILOG↩
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end↩