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Scratchpad size increased to 1 MiB

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New AES-based scratchpad hashing function
This commit is contained in:
tevador
2019-01-18 23:51:18 +01:00
parent 93c324709b
commit 16db607025
12 changed files with 923 additions and 925 deletions
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src/JitCompilerX86.cpp
+35 -26
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@@ -182,11 +182,16 @@ namespace RandomX {
emitByte(0xe8); //xor rbp, rax
}
emitByte(0x25); //and eax,
if (instr.loca & 3) {
emit(ScratchpadL1 - 1); //first 16 KiB of scratchpad
if (instr.loca & 15) {
if (instr.loca & 3) {
emit(ScratchpadL1 - 1); //first 16 KiB of scratchpad
}
else {
emit(ScratchpadL2 - 1); //first 256 KiB of scratchpad
}
}
else {
emit(ScratchpadL2 - 1); //whole scratchpad
emit(ScratchpadL3 - 1); //whole scratchpad
}
}
@@ -266,27 +271,27 @@ namespace RandomX {
}
void JitCompilerX86::gencr(Instruction& instr, bool rax = true) {
switch (instr.locc & 7)
{
case 0:
scratchpadStoreR(instr, ScratchpadL2, rax);
break;
case 1:
case 2:
case 3:
scratchpadStoreR(instr, ScratchpadL1, rax);
break;
default:
emit(uint16_t(0x8b4c)); //mov
if (rax) {
emitByte(0xc0 + 8 * (instr.regc % RegistersCount)); //regc, rax
if (instr.locc & 16) { //write to register
emit(uint16_t(0x8b4c)); //mov
if (rax) {
emitByte(0xc0 + 8 * (instr.regc % RegistersCount)); //regc, rax
}
else {
emitByte(0xc1 + 8 * (instr.regc % RegistersCount)); //regc, rcx
}
}
else {
if (instr.locc & 15) {
if (instr.locc & 3) {
scratchpadStoreR(instr, ScratchpadL1, rax);
}
else {
emitByte(0xc1 + 8 * (instr.regc % RegistersCount)); //regc, rcx
scratchpadStoreR(instr, ScratchpadL2, rax);
}
break;
}
else {
scratchpadStoreR(instr, ScratchpadL3, rax);
}
}
}
@@ -314,13 +319,17 @@ namespace RandomX {
}
emit(uint16_t(0x280f)); //movaps
emitByte(0xc0 + 8 * regc); // regc, xmm0
if (instr.locc & 4) //C.LOC.R
{
if (instr.locc & 3) { //C.LOC.W
scratchpadStoreF(instr, regc, ScratchpadL1, (instr.locc & 128)); //first 16 KiB of scratchpad
if (instr.locc & 16) { //write to scratchpad
if (instr.locc & 15) {
if (instr.locc & 3) { //C.LOC.W
scratchpadStoreF(instr, regc, ScratchpadL1, (instr.locc & 128)); //first 16 KiB of scratchpad
}
else {
scratchpadStoreF(instr, regc, ScratchpadL2, (instr.locc & 128)); //first 256 KiB of scratchpad
}
}
else {
scratchpadStoreF(instr, regc, ScratchpadL2, (instr.locc & 128)); //whole scratchpad
scratchpadStoreF(instr, regc, ScratchpadL3, (instr.locc & 128)); //whole scratchpad
}
}
}