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These will be used in new functions added for scatter/gather update operations. Signed-off-by: Dave Watson --- arch/x86/crypto/aesni-intel_asm.S | 53 ++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 29 deletions(-) diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S index 48911fe..39b42b1 100644 --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -170,6 +170,26 @@ 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) @@ -1130,16 +1150,7 @@ _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 @@ -1309,10 +1320,7 @@ _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) @@ -1393,22 +1401,12 @@ 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 @@ -1576,10 +1574,7 @@ _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) -- 2.9.5