Patch replaces 'movb' instructions with 'movzbl' to break false register dependencies, interleaves instructions better for out-of-order scheduling and merges constant 16-bit rotation with round-key variable rotation.
Tested on Core i5-2450M. Cc: Johannes Goetzfried <[email protected]> Signed-off-by: Jussi Kivilinna <[email protected]> --- arch/x86/crypto/cast5-avx-x86_64-asm_64.S | 273 ++++++++++++++++------------- 1 file changed, 151 insertions(+), 122 deletions(-) diff --git a/arch/x86/crypto/cast5-avx-x86_64-asm_64.S b/arch/x86/crypto/cast5-avx-x86_64-asm_64.S index 94693c8..6d064d0 100644 --- a/arch/x86/crypto/cast5-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/cast5-avx-x86_64-asm_64.S @@ -56,18 +56,20 @@ #define RX %xmm8 -#define RKM %xmm9 -#define RKRF %xmm10 -#define RKRR %xmm11 +#define RKM0 %xmm9 +#define RKRL0 %xmm10 +#define RKRR0 %xmm11 -#define RTMP %xmm12 -#define RMASK %xmm13 -#define R32 %xmm14 +#define RKM1 %xmm12 +#define RKRL1 %xmm13 +#define RKRR1 %xmm14 + +#define RTMP %xmm15 #define RID1 %rax -#define RID1b %al +#define RID1d %eax #define RID2 %rbx -#define RID2b %bl +#define RID2d %ebx #define RGI1 %rdx #define RGI1bl %dl @@ -84,60 +86,76 @@ #define RFS3d %r10d -#define lookup_32bit(src, dst, op1, op2, op3) \ - movb src ## bl, RID1b; \ - movb src ## bh, RID2b; \ +#define lookup_32bit(src, dst, op1, op2, op3, interleave_op, il_reg) \ + movzbl src ## bh, RID1d; \ + movzbl src ## bl, RID2d; \ + shrq $16, src; \ movl s1(, RID1, 4), dst ## d; \ op1 s2(, RID2, 4), dst ## d; \ - shrq $16, src; \ - movb src ## bl, RID1b; \ - movb src ## bh, RID2b; \ + movzbl src ## bh, RID1d; \ + movzbl src ## bl, RID2d; \ + interleave_op(il_reg); \ op2 s3(, RID1, 4), dst ## d; \ op3 s4(, RID2, 4), dst ## d; -#define F(a, x, op0, op1, op2, op3) \ - op0 a, RKM, x; \ - vpslld RKRF, x, RTMP; \ - vpsrld RKRR, x, x; \ +#define dummy(d) /* do nothing */ + +#define shr_next(reg) \ + shrq $16, reg; + +#define F(a, x, op0, op1, op2, op3, rkm, rkrl, rkrr) \ + op0 a, rkm, x; \ + vpslld rkrl, x, RTMP; \ + vpsrld rkrr, x, x; \ vpor RTMP, x, x; \ \ - vpshufb RMASK, x, x; \ vmovq x, RGI1; \ - vpsrldq $8, x, x; \ - vmovq x, RGI2; \ - \ - lookup_32bit(RGI1, RFS1, op1, op2, op3); \ - shrq $16, RGI1; \ - lookup_32bit(RGI1, RFS2, op1, op2, op3); \ - shlq $32, RFS2; \ - orq RFS1, RFS2; \ + vpextrq $1, x, RGI2; \ \ - lookup_32bit(RGI2, RFS1, op1, op2, op3); \ - shrq $16, RGI2; \ - lookup_32bit(RGI2, RFS3, op1, op2, op3); \ - shlq $32, RFS3; \ - orq RFS1, RFS3; \ + lookup_32bit(RGI1, RFS1, op1, op2, op3, shr_next, RGI1); \ + vmovd RFS1d, x; \ + lookup_32bit(RGI1, RFS2, op1, op2, op3, dummy, none); \ + vpinsrd $1, RFS2d, x, x; \ \ - vmovq RFS2, x; \ - vpinsrq $1, RFS3, x, x; - -#define F1(b, x) F(b, x, vpaddd, xorl, subl, addl) -#define F2(b, x) F(b, x, vpxor, subl, addl, xorl) -#define F3(b, x) F(b, x, vpsubd, addl, xorl, subl) - -#define subround(a, b, x, n, f) \ - F ## f(b, x); \ + lookup_32bit(RGI2, RFS1, op1, op2, op3, shr_next, RGI2); \ + vpinsrd $2, RFS1d, x, x; \ + lookup_32bit(RGI2, RFS3, op1, op2, op3, dummy, none); \ + vpinsrd $3, RFS3d, x, x; + +#define F1(b, x, rkm, rkrl, rkrr) \ + F(b, x, vpaddd, xorl, subl, addl, rkm, rkrl, rkrr) +#define F2(b, x, rkm, rkrl, rkrr) \ + F(b, x, vpxor, subl, addl, xorl, rkm, rkrl, rkrr) +#define F3(b, x, rkm, rkrl, rkrr) \ + F(b, x, vpsubd, addl, xorl, subl, rkm, rkrl, rkrr) + +#define subround(a, b, x, f, rkm, rkrl, rkrr) \ + F ## f(b, x, rkm, rkrl, rkrr); \ vpxor a, x, a; -#define round(l, r, n, f) \ - vbroadcastss (km+(4*n))(CTX), RKM; \ - vpinsrb $0, (kr+n)(CTX), RKRF, RKRF; \ - vpsubq RKRF, R32, RKRR; \ - subround(l ## 1, r ## 1, RX, n, f); \ - subround(l ## 2, r ## 2, RX, n, f); \ - subround(l ## 3, r ## 3, RX, n, f); \ - subround(l ## 4, r ## 4, RX, n, f); - +#define load_round_key(n, rkm, rkrl, rkrr) \ + vbroadcastss (km+(4*n))(CTX), rkm; \ + movzbl (kr+n)(CTX), RID1d; \ + movl $32, RID2d; \ + /* merge (kr)-bit and 16-bit rotates */ \ + xorl $16, RID1d; \ + vmovd RID1d, rkrl; \ + subl RID1d, RID2d; \ + vmovd RID2d, rkrr; + +#define enc_load_keys(n) \ + load_round_key((n + 0), RKM0, RKRL0, RKRR0); \ + load_round_key((n + 1), RKM1, RKRL1, RKRR1); + +#define dec_load_keys(n) \ + load_round_key((n - 0), RKM0, RKRL0, RKRR0); \ + load_round_key((n - 1), RKM1, RKRL1, RKRR1); + +#define round(l, r, f, rkm, rkrl, rkrr) \ + subround(l ## 1, r ## 1, RX, f, rkm, rkrl, rkrr); \ + subround(l ## 2, r ## 2, RX, f, rkm, rkrl, rkrr); \ + subround(l ## 3, r ## 3, RX, f, rkm, rkrl, rkrr); \ + subround(l ## 4, r ## 4, RX, f, rkm, rkrl, rkrr); #define transpose_2x4(x0, x1, t0, t1) \ vpunpckldq x1, x0, t0; \ @@ -146,27 +164,27 @@ vpunpcklqdq t1, t0, x0; \ vpunpckhqdq t1, t0, x1; -#define inpack_blocks(in, x0, x1, t0, t1) \ +#define inpack_blocks(in, x0, x1, t0, t1, rmask) \ vmovdqu (0*4*4)(in), x0; \ vmovdqu (1*4*4)(in), x1; \ - vpshufb RMASK, x0, x0; \ - vpshufb RMASK, x1, x1; \ + vpshufb rmask, x0, x0; \ + vpshufb rmask, x1, x1; \ \ transpose_2x4(x0, x1, t0, t1) -#define outunpack_blocks(out, x0, x1, t0, t1) \ +#define outunpack_blocks(out, x0, x1, t0, t1, rmask) \ transpose_2x4(x0, x1, t0, t1) \ \ - vpshufb RMASK, x0, x0; \ - vpshufb RMASK, x1, x1; \ + vpshufb rmask, x0, x0; \ + vpshufb rmask, x1, x1; \ vmovdqu x0, (0*4*4)(out); \ vmovdqu x1, (1*4*4)(out); -#define outunpack_xor_blocks(out, x0, x1, t0, t1) \ +#define outunpack_xor_blocks(out, x0, x1, t0, t1, rmask) \ transpose_2x4(x0, x1, t0, t1) \ \ - vpshufb RMASK, x0, x0; \ - vpshufb RMASK, x1, x1; \ + vpshufb rmask, x0, x0; \ + vpshufb rmask, x1, x1; \ vpxor (0*4*4)(out), x0, x0; \ vmovdqu x0, (0*4*4)(out); \ vpxor (1*4*4)(out), x1, x1; \ @@ -175,8 +193,6 @@ .align 16 .Lbswap_mask: .byte 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12 -.L32_mask: - .byte 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ,0, 0, 0, 0, 0 .align 16 .global __cast5_enc_blk_16way @@ -193,68 +209,75 @@ __cast5_enc_blk_16way: pushq %rbx; pushq %rcx; - vmovdqu .Lbswap_mask, RMASK; - vmovdqu .L32_mask, R32; - vpxor RKRF, RKRF, RKRF; - - inpack_blocks(%rdx, RL1, RR1, RTMP, RX); + vmovdqa .Lbswap_mask, RKM0; + inpack_blocks(%rdx, RL1, RR1, RTMP, RX, RKM0); leaq (2*4*4)(%rdx), %rax; - inpack_blocks(%rax, RL2, RR2, RTMP, RX); + inpack_blocks(%rax, RL2, RR2, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - inpack_blocks(%rax, RL3, RR3, RTMP, RX); + inpack_blocks(%rax, RL3, RR3, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - inpack_blocks(%rax, RL4, RR4, RTMP, RX); + inpack_blocks(%rax, RL4, RR4, RTMP, RX, RKM0); xorq RID1, RID1; xorq RID2, RID2; - round(RL, RR, 0, 1); - round(RR, RL, 1, 2); - round(RL, RR, 2, 3); - round(RR, RL, 3, 1); - round(RL, RR, 4, 2); - round(RR, RL, 5, 3); - round(RL, RR, 6, 1); - round(RR, RL, 7, 2); - round(RL, RR, 8, 3); - round(RR, RL, 9, 1); - round(RL, RR, 10, 2); - round(RR, RL, 11, 3); + enc_load_keys(0); + round(RL, RR, 1, RKM0, RKRL0, RKRR0); + round(RR, RL, 2, RKM1, RKRL1, RKRR1); + enc_load_keys(2); + round(RL, RR, 3, RKM0, RKRL0, RKRR0); + round(RR, RL, 1, RKM1, RKRL1, RKRR1); + enc_load_keys(4); + round(RL, RR, 2, RKM0, RKRL0, RKRR0); + round(RR, RL, 3, RKM1, RKRL1, RKRR1); + enc_load_keys(6); + round(RL, RR, 1, RKM0, RKRL0, RKRR0); + round(RR, RL, 2, RKM1, RKRL1, RKRR1); + enc_load_keys(8); + round(RL, RR, 3, RKM0, RKRL0, RKRR0); + round(RR, RL, 1, RKM1, RKRL1, RKRR1); + enc_load_keys(10); + round(RL, RR, 2, RKM0, RKRL0, RKRR0); + round(RR, RL, 3, RKM1, RKRL1, RKRR1); movb rr(CTX), %al; testb %al, %al; jnz __skip_enc; - round(RL, RR, 12, 1); - round(RR, RL, 13, 2); - round(RL, RR, 14, 3); - round(RR, RL, 15, 1); + enc_load_keys(12); + round(RL, RR, 1, RKM0, RKRL0, RKRR0); + round(RR, RL, 2, RKM1, RKRL1, RKRR1); + enc_load_keys(14); + round(RL, RR, 3, RKM0, RKRL0, RKRR0); + round(RR, RL, 1, RKM1, RKRL1, RKRR1); __skip_enc: popq %rcx; popq %rbx; + vmovdqa .Lbswap_mask, RKM0; + testb %cl, %cl; jnz __enc_xor16; - outunpack_blocks(%rsi, RR1, RL1, RTMP, RX); + outunpack_blocks(%rsi, RR1, RL1, RTMP, RX, RKM0); leaq (2*4*4)(%rsi), %rax; - outunpack_blocks(%rax, RR2, RL2, RTMP, RX); + outunpack_blocks(%rax, RR2, RL2, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - outunpack_blocks(%rax, RR3, RL3, RTMP, RX); + outunpack_blocks(%rax, RR3, RL3, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - outunpack_blocks(%rax, RR4, RL4, RTMP, RX); + outunpack_blocks(%rax, RR4, RL4, RTMP, RX, RKM0); ret; __enc_xor16: - outunpack_xor_blocks(%rsi, RR1, RL1, RTMP, RX); + outunpack_xor_blocks(%rsi, RR1, RL1, RTMP, RX, RKM0); leaq (2*4*4)(%rsi), %rax; - outunpack_xor_blocks(%rax, RR2, RL2, RTMP, RX); + outunpack_xor_blocks(%rax, RR2, RL2, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - outunpack_xor_blocks(%rax, RR3, RL3, RTMP, RX); + outunpack_xor_blocks(%rax, RR3, RL3, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - outunpack_xor_blocks(%rax, RR4, RL4, RTMP, RX); + outunpack_xor_blocks(%rax, RR4, RL4, RTMP, RX, RKM0); ret; @@ -271,17 +294,14 @@ cast5_dec_blk_16way: pushq %rbx; - vmovdqu .Lbswap_mask, RMASK; - vmovdqu .L32_mask, R32; - vpxor RKRF, RKRF, RKRF; - - inpack_blocks(%rdx, RL1, RR1, RTMP, RX); + vmovdqa .Lbswap_mask, RKM0; + inpack_blocks(%rdx, RL1, RR1, RTMP, RX, RKM0); leaq (2*4*4)(%rdx), %rax; - inpack_blocks(%rax, RL2, RR2, RTMP, RX); + inpack_blocks(%rax, RL2, RR2, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - inpack_blocks(%rax, RL3, RR3, RTMP, RX); + inpack_blocks(%rax, RL3, RR3, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - inpack_blocks(%rax, RL4, RR4, RTMP, RX); + inpack_blocks(%rax, RL4, RR4, RTMP, RX, RKM0); xorq RID1, RID1; xorq RID2, RID2; @@ -290,33 +310,42 @@ cast5_dec_blk_16way: testb %al, %al; jnz __skip_dec; - round(RL, RR, 15, 1); - round(RR, RL, 14, 3); - round(RL, RR, 13, 2); - round(RR, RL, 12, 1); + dec_load_keys(15); + round(RL, RR, 1, RKM0, RKRL0, RKRR0); + round(RR, RL, 3, RKM1, RKRL1, RKRR1); + dec_load_keys(13); + round(RL, RR, 2, RKM0, RKRL0, RKRR0); + round(RR, RL, 1, RKM1, RKRL1, RKRR1); __skip_dec: - round(RL, RR, 11, 3); - round(RR, RL, 10, 2); - round(RL, RR, 9, 1); - round(RR, RL, 8, 3); - round(RL, RR, 7, 2); - round(RR, RL, 6, 1); - round(RL, RR, 5, 3); - round(RR, RL, 4, 2); - round(RL, RR, 3, 1); - round(RR, RL, 2, 3); - round(RL, RR, 1, 2); - round(RR, RL, 0, 1); - + dec_load_keys(11); + round(RL, RR, 3, RKM0, RKRL0, RKRR0); + round(RR, RL, 2, RKM1, RKRL1, RKRR1); + dec_load_keys(9); + round(RL, RR, 1, RKM0, RKRL0, RKRR0); + round(RR, RL, 3, RKM1, RKRL1, RKRR1); + dec_load_keys(7); + round(RL, RR, 2, RKM0, RKRL0, RKRR0); + round(RR, RL, 1, RKM1, RKRL1, RKRR1); + dec_load_keys(5); + round(RL, RR, 3, RKM0, RKRL0, RKRR0); + round(RR, RL, 2, RKM1, RKRL1, RKRR1); + dec_load_keys(3); + round(RL, RR, 1, RKM0, RKRL0, RKRR0); + round(RR, RL, 3, RKM1, RKRL1, RKRR1); + dec_load_keys(1); + round(RL, RR, 2, RKM0, RKRL0, RKRR0); + round(RR, RL, 1, RKM1, RKRL1, RKRR1); + + vmovdqa .Lbswap_mask, RKM0; popq %rbx; - outunpack_blocks(%rsi, RR1, RL1, RTMP, RX); + outunpack_blocks(%rsi, RR1, RL1, RTMP, RX, RKM0); leaq (2*4*4)(%rsi), %rax; - outunpack_blocks(%rax, RR2, RL2, RTMP, RX); + outunpack_blocks(%rax, RR2, RL2, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - outunpack_blocks(%rax, RR3, RL3, RTMP, RX); + outunpack_blocks(%rax, RR3, RL3, RTMP, RX, RKM0); leaq (2*4*4)(%rax), %rax; - outunpack_blocks(%rax, RR4, RL4, RTMP, RX); + outunpack_blocks(%rax, RR4, RL4, RTMP, RX, RKM0); ret; -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
