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| author | Dave Watson <davejwatson@fb.com> | 2018-02-14 18:38:35 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-02-22 15:16:43 +0100 |
| commit | 6c2c86b3e05822abec2fc0d7a5c31637b57cb126 (patch) | |
| tree | 71c92b826a31b2ae14dbca458a521d6adfa2cd5b | |
| parent | crypto: aesni - Merge INITIAL_BLOCKS_ENC/DEC (diff) | |
| download | linux-6c2c86b3e05822abec2fc0d7a5c31637b57cb126.tar.xz linux-6c2c86b3e05822abec2fc0d7a5c31637b57cb126.zip | |
crypto: aesni - Macro-ify func save/restore
Macro-ify function save and restore. These will be used in new functions
added for scatter/gather update operations.
Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | arch/x86/crypto/aesni-intel_asm.S | 53 |
1 files changed, 24 insertions, 29 deletions
diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S index 251a65f84198..d2645f62720e 100644 --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -171,6 +171,26 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff #define TKEYP T1 #endif +.macro FUNC_SAVE + push %r12 + push %r13 + push %r14 + mov %rsp, %r14 +# +# states of %xmm registers %xmm6:%xmm15 not saved +# all %xmm registers are clobbered +# + sub $VARIABLE_OFFSET, %rsp + and $~63, %rsp +.endm + + +.macro FUNC_RESTORE + mov %r14, %rsp + pop %r14 + pop %r13 + pop %r12 +.endm #ifdef __x86_64__ /* GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0) @@ -1131,16 +1151,7 @@ _esb_loop_\@: * *****************************************************************************/ ENTRY(aesni_gcm_dec) - push %r12 - push %r13 - push %r14 - mov %rsp, %r14 -/* -* states of %xmm registers %xmm6:%xmm15 not saved -* all %xmm registers are clobbered -*/ - sub $VARIABLE_OFFSET, %rsp - and $~63, %rsp # align rsp to 64 bytes + FUNC_SAVE mov %arg6, %r12 movdqu (%r12), %xmm13 # %xmm13 = HashKey movdqa SHUF_MASK(%rip), %xmm2 @@ -1310,10 +1321,7 @@ _T_1_decrypt: _T_16_decrypt: movdqu %xmm0, (%r10) _return_T_done_decrypt: - mov %r14, %rsp - pop %r14 - pop %r13 - pop %r12 + FUNC_RESTORE ret ENDPROC(aesni_gcm_dec) @@ -1394,22 +1402,12 @@ ENDPROC(aesni_gcm_dec) * poly = x^128 + x^127 + x^126 + x^121 + 1 ***************************************************************************/ ENTRY(aesni_gcm_enc) - push %r12 - push %r13 - push %r14 - mov %rsp, %r14 -# -# states of %xmm registers %xmm6:%xmm15 not saved -# all %xmm registers are clobbered -# - sub $VARIABLE_OFFSET, %rsp - and $~63, %rsp + FUNC_SAVE mov %arg6, %r12 movdqu (%r12), %xmm13 movdqa SHUF_MASK(%rip), %xmm2 PSHUFB_XMM %xmm2, %xmm13 - # precompute HashKey<<1 mod poly from the HashKey (required for GHASH) movdqa %xmm13, %xmm2 @@ -1577,10 +1575,7 @@ _T_1_encrypt: _T_16_encrypt: movdqu %xmm0, (%r10) _return_T_done_encrypt: - mov %r14, %rsp - pop %r14 - pop %r13 - pop %r12 + FUNC_RESTORE ret ENDPROC(aesni_gcm_enc) |