diff options
Diffstat (limited to 'arch/x86/crypto/aesni-intel_asm.S')
| -rw-r--r-- | arch/x86/crypto/aesni-intel_asm.S | 280 |
1 files changed, 232 insertions, 48 deletions
diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S index 84d8a156cdcd..4e3972570916 100644 --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -43,10 +43,6 @@ #ifdef __x86_64__ # constants in mergeable sections, linker can reorder and merge -.section .rodata.cst16.gf128mul_x_ble_mask, "aM", @progbits, 16 -.align 16 -.Lgf128mul_x_ble_mask: - .octa 0x00000000000000010000000000000087 .section .rodata.cst16.POLY, "aM", @progbits, 16 .align 16 POLY: .octa 0xC2000000000000000000000000000001 @@ -146,7 +142,7 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff #define CTR %xmm11 #define INC %xmm12 -#define GF128MUL_MASK %xmm10 +#define GF128MUL_MASK %xmm7 #ifdef __x86_64__ #define AREG %rax @@ -2823,6 +2819,14 @@ SYM_FUNC_START(aesni_ctr_enc) ret SYM_FUNC_END(aesni_ctr_enc) +#endif + +.section .rodata.cst16.gf128mul_x_ble_mask, "aM", @progbits, 16 +.align 16 +.Lgf128mul_x_ble_mask: + .octa 0x00000000000000010000000000000087 +.previous + /* * _aesni_gf128mul_x_ble: internal ABI * Multiply in GF(2^128) for XTS IVs @@ -2835,11 +2839,11 @@ SYM_FUNC_END(aesni_ctr_enc) * CTR: == temporary value */ #define _aesni_gf128mul_x_ble() \ - pshufd $0x13, IV, CTR; \ + pshufd $0x13, IV, KEY; \ paddq IV, IV; \ - psrad $31, CTR; \ - pand GF128MUL_MASK, CTR; \ - pxor CTR, IV; + psrad $31, KEY; \ + pand GF128MUL_MASK, KEY; \ + pxor KEY, IV; /* * void aesni_xts_encrypt(const struct crypto_aes_ctx *ctx, u8 *dst, @@ -2847,65 +2851,153 @@ SYM_FUNC_END(aesni_ctr_enc) */ SYM_FUNC_START(aesni_xts_encrypt) FRAME_BEGIN - +#ifndef __x86_64__ + pushl IVP + pushl LEN + pushl KEYP + pushl KLEN + movl (FRAME_OFFSET+20)(%esp), KEYP # ctx + movl (FRAME_OFFSET+24)(%esp), OUTP # dst + movl (FRAME_OFFSET+28)(%esp), INP # src + movl (FRAME_OFFSET+32)(%esp), LEN # len + movl (FRAME_OFFSET+36)(%esp), IVP # iv movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK +#else + movdqa .Lgf128mul_x_ble_mask(%rip), GF128MUL_MASK +#endif movups (IVP), IV mov 480(KEYP), KLEN .Lxts_enc_loop4: + sub $64, LEN + jl .Lxts_enc_1x + movdqa IV, STATE1 - movdqu 0x00(INP), INC - pxor INC, STATE1 + movdqu 0x00(INP), IN + pxor IN, STATE1 movdqu IV, 0x00(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE2 - movdqu 0x10(INP), INC - pxor INC, STATE2 + movdqu 0x10(INP), IN + pxor IN, STATE2 movdqu IV, 0x10(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE3 - movdqu 0x20(INP), INC - pxor INC, STATE3 + movdqu 0x20(INP), IN + pxor IN, STATE3 movdqu IV, 0x20(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE4 - movdqu 0x30(INP), INC - pxor INC, STATE4 + movdqu 0x30(INP), IN + pxor IN, STATE4 movdqu IV, 0x30(OUTP) call _aesni_enc4 - movdqu 0x00(OUTP), INC - pxor INC, STATE1 + movdqu 0x00(OUTP), IN + pxor IN, STATE1 movdqu STATE1, 0x00(OUTP) - movdqu 0x10(OUTP), INC - pxor INC, STATE2 + movdqu 0x10(OUTP), IN + pxor IN, STATE2 movdqu STATE2, 0x10(OUTP) - movdqu 0x20(OUTP), INC - pxor INC, STATE3 + movdqu 0x20(OUTP), IN + pxor IN, STATE3 movdqu STATE3, 0x20(OUTP) - movdqu 0x30(OUTP), INC - pxor INC, STATE4 + movdqu 0x30(OUTP), IN + pxor IN, STATE4 movdqu STATE4, 0x30(OUTP) _aesni_gf128mul_x_ble() add $64, INP add $64, OUTP - sub $64, LEN - ja .Lxts_enc_loop4 + test LEN, LEN + jnz .Lxts_enc_loop4 +.Lxts_enc_ret_iv: movups IV, (IVP) +.Lxts_enc_ret: +#ifndef __x86_64__ + popl KLEN + popl KEYP + popl LEN + popl IVP +#endif FRAME_END ret + +.Lxts_enc_1x: + add $64, LEN + jz .Lxts_enc_ret_iv + sub $16, LEN + jl .Lxts_enc_cts4 + +.Lxts_enc_loop1: + movdqu (INP), STATE + pxor IV, STATE + call _aesni_enc1 + pxor IV, STATE + _aesni_gf128mul_x_ble() + + test LEN, LEN + jz .Lxts_enc_out + + add $16, INP + sub $16, LEN + jl .Lxts_enc_cts1 + + movdqu STATE, (OUTP) + add $16, OUTP + jmp .Lxts_enc_loop1 + +.Lxts_enc_out: + movdqu STATE, (OUTP) + jmp .Lxts_enc_ret_iv + +.Lxts_enc_cts4: + movdqa STATE4, STATE + sub $16, OUTP + +.Lxts_enc_cts1: +#ifndef __x86_64__ + lea .Lcts_permute_table, T1 +#else + lea .Lcts_permute_table(%rip), T1 +#endif + add LEN, INP /* rewind input pointer */ + add $16, LEN /* # bytes in final block */ + movups (INP), IN1 + + mov T1, IVP + add $32, IVP + add LEN, T1 + sub LEN, IVP + add OUTP, LEN + + movups (T1), %xmm4 + movaps STATE, IN2 + pshufb %xmm4, STATE + movups STATE, (LEN) + + movups (IVP), %xmm0 + pshufb %xmm0, IN1 + pblendvb IN2, IN1 + movaps IN1, STATE + + pxor IV, STATE + call _aesni_enc1 + pxor IV, STATE + + movups STATE, (OUTP) + jmp .Lxts_enc_ret SYM_FUNC_END(aesni_xts_encrypt) /* @@ -2914,66 +3006,158 @@ SYM_FUNC_END(aesni_xts_encrypt) */ SYM_FUNC_START(aesni_xts_decrypt) FRAME_BEGIN - +#ifndef __x86_64__ + pushl IVP + pushl LEN + pushl KEYP + pushl KLEN + movl (FRAME_OFFSET+20)(%esp), KEYP # ctx + movl (FRAME_OFFSET+24)(%esp), OUTP # dst + movl (FRAME_OFFSET+28)(%esp), INP # src + movl (FRAME_OFFSET+32)(%esp), LEN # len + movl (FRAME_OFFSET+36)(%esp), IVP # iv movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK +#else + movdqa .Lgf128mul_x_ble_mask(%rip), GF128MUL_MASK +#endif movups (IVP), IV mov 480(KEYP), KLEN add $240, KEYP + test $15, LEN + jz .Lxts_dec_loop4 + sub $16, LEN + .Lxts_dec_loop4: + sub $64, LEN + jl .Lxts_dec_1x + movdqa IV, STATE1 - movdqu 0x00(INP), INC - pxor INC, STATE1 + movdqu 0x00(INP), IN + pxor IN, STATE1 movdqu IV, 0x00(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE2 - movdqu 0x10(INP), INC - pxor INC, STATE2 + movdqu 0x10(INP), IN + pxor IN, STATE2 movdqu IV, 0x10(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE3 - movdqu 0x20(INP), INC - pxor INC, STATE3 + movdqu 0x20(INP), IN + pxor IN, STATE3 movdqu IV, 0x20(OUTP) _aesni_gf128mul_x_ble() movdqa IV, STATE4 - movdqu 0x30(INP), INC - pxor INC, STATE4 + movdqu 0x30(INP), IN + pxor IN, STATE4 movdqu IV, 0x30(OUTP) call _aesni_dec4 - movdqu 0x00(OUTP), INC - pxor INC, STATE1 + movdqu 0x00(OUTP), IN + pxor IN, STATE1 movdqu STATE1, 0x00(OUTP) - movdqu 0x10(OUTP), INC - pxor INC, STATE2 + movdqu 0x10(OUTP), IN + pxor IN, STATE2 movdqu STATE2, 0x10(OUTP) - movdqu 0x20(OUTP), INC - pxor INC, STATE3 + movdqu 0x20(OUTP), IN + pxor IN, STATE3 movdqu STATE3, 0x20(OUTP) - movdqu 0x30(OUTP), INC - pxor INC, STATE4 + movdqu 0x30(OUTP), IN + pxor IN, STATE4 movdqu STATE4, 0x30(OUTP) _aesni_gf128mul_x_ble() add $64, INP add $64, OUTP - sub $64, LEN - ja .Lxts_dec_loop4 + test LEN, LEN + jnz .Lxts_dec_loop4 +.Lxts_dec_ret_iv: movups IV, (IVP) +.Lxts_dec_ret: +#ifndef __x86_64__ + popl KLEN + popl KEYP + popl LEN + popl IVP +#endif FRAME_END ret -SYM_FUNC_END(aesni_xts_decrypt) +.Lxts_dec_1x: + add $64, LEN + jz .Lxts_dec_ret_iv + +.Lxts_dec_loop1: + movdqu (INP), STATE + + add $16, INP + sub $16, LEN + jl .Lxts_dec_cts1 + + pxor IV, STATE + call _aesni_dec1 + pxor IV, STATE + _aesni_gf128mul_x_ble() + + test LEN, LEN + jz .Lxts_dec_out + + movdqu STATE, (OUTP) + add $16, OUTP + jmp .Lxts_dec_loop1 + +.Lxts_dec_out: + movdqu STATE, (OUTP) + jmp .Lxts_dec_ret_iv + +.Lxts_dec_cts1: + movdqa IV, STATE4 + _aesni_gf128mul_x_ble() + + pxor IV, STATE + call _aesni_dec1 + pxor IV, STATE + +#ifndef __x86_64__ + lea .Lcts_permute_table, T1 +#else + lea .Lcts_permute_table(%rip), T1 #endif + add LEN, INP /* rewind input pointer */ + add $16, LEN /* # bytes in final block */ + movups (INP), IN1 + + mov T1, IVP + add $32, IVP + add LEN, T1 + sub LEN, IVP + add OUTP, LEN + + movups (T1), %xmm4 + movaps STATE, IN2 + pshufb %xmm4, STATE + movups STATE, (LEN) + + movups (IVP), %xmm0 + pshufb %xmm0, IN1 + pblendvb IN2, IN1 + movaps IN1, STATE + + pxor STATE4, STATE + call _aesni_dec1 + pxor STATE4, STATE + + movups STATE, (OUTP) + jmp .Lxts_dec_ret +SYM_FUNC_END(aesni_xts_decrypt) |