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eliminated hadrcoded %rcx

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orignal 2014-05-13 11:03:33 -04:00
parent e9fc2492dd
commit 6bf57cc4ae
1 changed files with 11 additions and 14 deletions
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25
aes.cpp
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@ -16,7 +16,7 @@ namespace crypto
m_KeySchedule += (16 - rem); m_KeySchedule += (16 - rem);
} }
#define KeyExpansion256 \ #define KeyExpansion256(round0,round1) \
"pshufd $0xff, %%xmm2, %%xmm2 \n" \ "pshufd $0xff, %%xmm2, %%xmm2 \n" \
"movaps %%xmm1, %%xmm4 \n" \ "movaps %%xmm1, %%xmm4 \n" \
"pslldq $4, %%xmm4 \n" \ "pslldq $4, %%xmm4 \n" \
@ -26,7 +26,7 @@ namespace crypto
"pslldq $4, %%xmm4 \n" \ "pslldq $4, %%xmm4 \n" \
"pxor %%xmm4, %%xmm1 \n" \ "pxor %%xmm4, %%xmm1 \n" \
"pxor %%xmm2, %%xmm1 \n" \ "pxor %%xmm2, %%xmm1 \n" \
"movaps %%xmm1, (%%rcx) \n" \ "movaps %%xmm1, "#round0"(%[sched]) \n" \
"aeskeygenassist $0, %%xmm1, %%xmm4 \n" \ "aeskeygenassist $0, %%xmm1, %%xmm4 \n" \
"pshufd $0xaa, %%xmm4, %%xmm2 \n" \ "pshufd $0xaa, %%xmm4, %%xmm2 \n" \
"movaps %%xmm3, %%xmm4 \n" \ "movaps %%xmm3, %%xmm4 \n" \
@ -37,9 +37,7 @@ namespace crypto
"pslldq $4, %%xmm4 \n" \ "pslldq $4, %%xmm4 \n" \
"pxor %%xmm4, %%xmm3 \n" \ "pxor %%xmm4, %%xmm3 \n" \
"pxor %%xmm2, %%xmm3 \n" \ "pxor %%xmm2, %%xmm3 \n" \
"movaps %%xmm3, 16(%%rcx) \n" \ "movaps %%xmm3, "#round1"(%[sched]) \n"
"add $32, %%rcx \n"
void ECBCryptoAESNI::ExpandKey (const uint8_t * key) void ECBCryptoAESNI::ExpandKey (const uint8_t * key)
{ {
@ -49,19 +47,18 @@ namespace crypto
"movups 16(%[key]), %%xmm3 \n" "movups 16(%[key]), %%xmm3 \n"
"movaps %%xmm1, (%[sched]) \n" "movaps %%xmm1, (%[sched]) \n"
"movaps %%xmm3, 16(%[sched]) \n" "movaps %%xmm3, 16(%[sched]) \n"
"lea 32(%[sched]), %%rcx \n"
"aeskeygenassist $1, %%xmm3, %%xmm2 \n" "aeskeygenassist $1, %%xmm3, %%xmm2 \n"
KeyExpansion256 KeyExpansion256(32,48)
"aeskeygenassist $2, %%xmm3, %%xmm2 \n" "aeskeygenassist $2, %%xmm3, %%xmm2 \n"
KeyExpansion256 KeyExpansion256(64,80)
"aeskeygenassist $4, %%xmm3, %%xmm2 \n" "aeskeygenassist $4, %%xmm3, %%xmm2 \n"
KeyExpansion256 KeyExpansion256(96,112)
"aeskeygenassist $8, %%xmm3, %%xmm2 \n" "aeskeygenassist $8, %%xmm3, %%xmm2 \n"
KeyExpansion256 KeyExpansion256(128,144)
"aeskeygenassist $16, %%xmm3, %%xmm2 \n" "aeskeygenassist $16, %%xmm3, %%xmm2 \n"
KeyExpansion256 KeyExpansion256(160,176)
"aeskeygenassist $32, %%xmm3, %%xmm2 \n" "aeskeygenassist $32, %%xmm3, %%xmm2 \n"
KeyExpansion256 KeyExpansion256(192,208)
"aeskeygenassist $64, %%xmm3, %%xmm2 \n" "aeskeygenassist $64, %%xmm3, %%xmm2 \n"
// key expansion final // key expansion final
"pshufd $0xff, %%xmm2, %%xmm2 \n" "pshufd $0xff, %%xmm2, %%xmm2 \n"
@ -73,10 +70,10 @@ namespace crypto
"pslldq $4, %%xmm4 \n" "pslldq $4, %%xmm4 \n"
"pxor %%xmm4, %%xmm1 \n" "pxor %%xmm4, %%xmm1 \n"
"pxor %%xmm2, %%xmm1 \n" "pxor %%xmm2, %%xmm1 \n"
"movups %%xmm1, (%%rcx) \n" "movups %%xmm1, 224(%[sched]) \n"
: // output : // output
: [key]"r"(key), [sched]"r"(m_KeySchedule) // input : [key]"r"(key), [sched]"r"(m_KeySchedule) // input
: "%rcx", "%xmm1", "%xmm2", "%xmm3", "%xmm4" // clogged : "%xmm1", "%xmm2", "%xmm3", "%xmm4" // clogged
); );
} }