Commit ff5796b6 authored by Josh Poimboeuf's avatar Josh Poimboeuf
Browse files

x86/crypto/aesni-intel_avx: Fix register usage comments 



Fix register usage comments to match reality.

Signed-off-by: default avatarJosh Poimboeuf <jpoimboe@redhat.com>
Tested-by: default avatarArd Biesheuvel <ardb@kernel.org>
Acked-by: default avatarArd Biesheuvel <ardb@kernel.org>
Tested-by: default avatarSami Tolvanen <samitolvanen@google.com>
Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/8655d4513a0ed1eddec609165064153973010aa2.1614182415.git.jpoimboe@redhat.com
parent 4f083009

arch/x86/crypto/aesni-intel_avx-x86_64.S

+5 −5
Original line number Diff line number Diff line
@@ -286,7 +286,7 @@ VARIABLE_OFFSET = 16*8 


# combined for GCM encrypt and decrypt functions

# clobbering all xmm registers

# clobbering r10, r11, r12, r13, r14, r15

# clobbering r10, r11, r12, r13, r15, rax

.macro  GCM_ENC_DEC INITIAL_BLOCKS GHASH_8_ENCRYPT_8_PARALLEL GHASH_LAST_8 GHASH_MUL ENC_DEC REP

        vmovdqu AadHash(arg2), %xmm8

        vmovdqu  HashKey(arg2), %xmm13      # xmm13 = HashKey
@@ -988,7 +988,7 @@ _partial_block_done_\@: 
## num_initial_blocks = b mod 4#

## encrypt the initial num_initial_blocks blocks and apply ghash on the ciphertext

## r10, r11, r12, rax are clobbered

## arg1, arg3, arg4, r14 are used as a pointer only, not modified

## arg1, arg2, arg3, arg4 are used as pointers only, not modified



.macro INITIAL_BLOCKS_AVX REP num_initial_blocks T1 T2 T3 T4 T5 CTR XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 T6 T_key ENC_DEC

	i = (8-\num_initial_blocks)
@@ -1223,7 +1223,7 @@ _initial_blocks_done\@: 


# encrypt 8 blocks at a time

# ghash the 8 previously encrypted ciphertext blocks

# arg1, arg3, arg4 are used as pointers only, not modified

# arg1, arg2, arg3, arg4 are used as pointers only, not modified

# r11 is the data offset value

.macro GHASH_8_ENCRYPT_8_PARALLEL_AVX REP T1 T2 T3 T4 T5 T6 CTR XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 T7 loop_idx ENC_DEC
@@ -1936,7 +1936,7 @@ SYM_FUNC_END(aesni_gcm_finalize_avx_gen2) 
## num_initial_blocks = b mod 4#

## encrypt the initial num_initial_blocks blocks and apply ghash on the ciphertext

## r10, r11, r12, rax are clobbered

## arg1, arg3, arg4, r14 are used as a pointer only, not modified

## arg1, arg2, arg3, arg4 are used as pointers only, not modified



.macro INITIAL_BLOCKS_AVX2 REP num_initial_blocks T1 T2 T3 T4 T5 CTR XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 T6 T_key ENC_DEC VER

	i = (8-\num_initial_blocks)
@@ -2178,7 +2178,7 @@ _initial_blocks_done\@: 


# encrypt 8 blocks at a time

# ghash the 8 previously encrypted ciphertext blocks

# arg1, arg3, arg4 are used as pointers only, not modified

# arg1, arg2, arg3, arg4 are used as pointers only, not modified

# r11 is the data offset value

.macro GHASH_8_ENCRYPT_8_PARALLEL_AVX2 REP T1 T2 T3 T4 T5 T6 CTR XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 T7 loop_idx ENC_DEC