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Mix dataset cacheline with registers r0-r7

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tevador
2019-01-13 21:14:59 +01:00
parent 48d85643de
commit a7ffe8c19a
8 changed files with 691 additions and 767 deletions
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src/asm/program_read.inc
+8 -20
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@@ -1,4 +1,3 @@
push rax ;# preserve eax
db 0, 0, 0, 0 ;# TransformAddress placeholder
mov rcx, qword ptr [rdi] ;# load the dataset address
xor rbp, rax ;# modify "mx"
@@ -9,24 +8,13 @@
;# read cacheline "ma"
ror rbp, 32 ;# swap "ma" and "mx"
mov edx, ebp ;# edx = ma
scratchpad_mask ;# limit address to the specified scratchpad size aligned to multiple of 8
lea rax, [rsi+rax*8] ;# scratchpad cache line
lea rcx, [rcx+rdx] ;# dataset cache line
mov rdx, qword ptr [rcx+0] ;# load first dataset quadword (prefetched into the cache by now)
xor qword ptr [rax+0], rdx ;# XOR the dataset item with a scratchpad item, repeat for the rest of the cacheline
mov rdx, qword ptr [rcx+8]
xor qword ptr [rax+8], rdx
mov rdx, qword ptr [rcx+16]
xor qword ptr [rax+16], rdx
mov rdx, qword ptr [rcx+24]
xor qword ptr [rax+24], rdx
mov rdx, qword ptr [rcx+32]
xor qword ptr [rax+32], rdx
mov rdx, qword ptr [rcx+40]
xor qword ptr [rax+40], rdx
mov rdx, qword ptr [rcx+48]
xor qword ptr [rax+48], rdx
mov rdx, qword ptr [rcx+56]
xor qword ptr [rax+56], rdx
pop rax ;# restore eax
xor r8, qword ptr [rcx+0]
xor r9, qword ptr [rcx+8]
xor r10, qword ptr [rcx+16]
xor r11, qword ptr [rcx+24]
xor r12, qword ptr [rcx+32]
xor r13, qword ptr [rcx+40]
xor r14, qword ptr [rcx+48]
xor r15, qword ptr [rcx+56]
ret