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sha2: Add inline-asm backend for LoongArch64 targets (#507)
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Original file line number | Diff line number | Diff line change |
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//! LoongArch64 assembly backend | ||
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macro_rules! c { | ||
($($l:expr)*) => { | ||
concat!($($l ,)*) | ||
}; | ||
} | ||
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macro_rules! rounda { | ||
($i:literal, $a:literal, $b:literal, $c:literal, $d:literal, $e:literal, $f:literal, $g:literal, $h:literal) => { | ||
c!( | ||
"ld.w $a5, $a1, (" $i " * 4);" | ||
"revb.2h $a5, $a5;" | ||
"rotri.w $a5, $a5, 16;" | ||
roundtail!($i, $a, $b, $c, $d, $e, $f, $g, $h) | ||
) | ||
}; | ||
} | ||
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macro_rules! roundb { | ||
($i:literal, $a:literal, $b:literal, $c:literal, $d:literal, $e:literal, $f:literal, $g:literal, $h:literal) => { | ||
c!( | ||
"ld.w $a4, $sp, (((" $i " - 15) & 0xF) * 4);" | ||
"ld.w $a5, $sp, (((" $i " - 16) & 0xF) * 4);" | ||
"ld.w $a6, $sp, (((" $i " - 7) & 0xF) * 4);" | ||
"add.w $a5, $a5, $a6;" | ||
"rotri.w $a6, $a4, 18;" | ||
"srli.w $a7, $a4, 3;" | ||
"rotri.w $a4, $a4, 7;" | ||
"xor $a6, $a6, $a7;" | ||
"xor $a4, $a4, $a6;" | ||
"add.w $a5, $a5, $a4;" | ||
"ld.w $a4, $sp, (((" $i " - 2) & 0xF) * 4);" | ||
"rotri.w $a6, $a4, 19;" | ||
"srli.w $a7, $a4, 10;" | ||
"rotri.w $a4, $a4, 17;" | ||
"xor $a6, $a6, $a7;" | ||
"xor $a4, $a4, $a6;" | ||
"add.w $a5, $a5, $a4;" | ||
roundtail!($i, $a, $b, $c, $d, $e, $f, $g, $h) | ||
) | ||
}; | ||
} | ||
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macro_rules! roundtail { | ||
($i:literal, $a:literal, $b:literal, $c:literal, $d:literal, $e:literal, $f:literal, $g:literal, $h:literal) => { | ||
c!( | ||
// Part 0 | ||
"rotri.w $a6, " $e ", 11;" | ||
"rotri.w $a7, " $e ", 25;" | ||
"rotri.w $a4, " $e ", 6;" | ||
"xor $a6, $a6, $a7;" | ||
"xor $a4, $a4, $a6;" | ||
"xor $a6, " $g ", " $f ";" | ||
"ld.w $a7, $a3, " $i " * 4;" | ||
"and $a6, $a6, " $e ";" | ||
"xor $a6, $a6, " $g ";" | ||
"add.w $a4, $a4, $a6;" | ||
"add.w $a4, $a4, $a7;" | ||
"add.w " $h ", " $h ", $a5;" | ||
"add.w " $h ", " $h ", $a4;" | ||
// Part 1 | ||
"add.w " $d ", " $d ", " $h ";" | ||
// Part 2 | ||
"rotri.w $a6, " $a ", 13;" | ||
"rotri.w $a7, " $a ", 22;" | ||
"rotri.w $a4, " $a ", 2;" | ||
"xor $a6, $a6, $a7;" | ||
"xor $a4, $a4, $a6;" | ||
"add.w " $h ", " $h ", $a4;" | ||
"or $a4, " $c ", " $b ";" | ||
"and $a6, " $c ", " $b ";" | ||
"and $a4, $a4, " $a ";" | ||
"or $a4, $a4, $a6;" | ||
"add.w " $h ", " $h ", $a4;" | ||
"st.w $a5, $sp, ((" $i " & 0xF) * 4);" | ||
) | ||
}; | ||
} | ||
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pub fn compress(state: &mut [u32; 8], blocks: &[[u8; 64]]) { | ||
if blocks.is_empty() { | ||
return; | ||
} | ||
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unsafe { | ||
core::arch::asm!( | ||
// Allocate scratch stack space | ||
"addi.d $sp, $sp, -64;", | ||
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// Load state | ||
"ld.w $t0, $a0, 0", | ||
"ld.w $t1, $a0, 4", | ||
"ld.w $t2, $a0, 8", | ||
"ld.w $t3, $a0, 12", | ||
"ld.w $t4, $a0, 16", | ||
"ld.w $t5, $a0, 20", | ||
"ld.w $t6, $a0, 24", | ||
"ld.w $t7, $a0, 28", | ||
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"42:", | ||
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// Do 64 rounds of hashing | ||
rounda!( 0, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
rounda!( 1, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
rounda!( 2, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
rounda!( 3, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
rounda!( 4, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
rounda!( 5, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
rounda!( 6, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
rounda!( 7, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
rounda!( 8, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
rounda!( 9, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
rounda!(10, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
rounda!(11, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
rounda!(12, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
rounda!(13, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
rounda!(14, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
rounda!(15, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
roundb!(16, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
roundb!(17, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
roundb!(18, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
roundb!(19, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
roundb!(20, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
roundb!(21, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
roundb!(22, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
roundb!(23, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
roundb!(24, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
roundb!(25, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
roundb!(26, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
roundb!(27, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
roundb!(28, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
roundb!(29, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
roundb!(30, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
roundb!(31, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
roundb!(32, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
roundb!(33, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
roundb!(34, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
roundb!(35, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
roundb!(36, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
roundb!(37, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
roundb!(38, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
roundb!(39, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
roundb!(40, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
roundb!(41, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
roundb!(42, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
roundb!(43, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
roundb!(44, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
roundb!(45, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
roundb!(46, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
roundb!(47, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
roundb!(48, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
roundb!(49, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
roundb!(50, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
roundb!(51, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
roundb!(52, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
roundb!(53, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
roundb!(54, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
roundb!(55, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
roundb!(56, "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7"), | ||
roundb!(57, "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6"), | ||
roundb!(58, "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4", "$t5"), | ||
roundb!(59, "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3", "$t4"), | ||
roundb!(60, "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2", "$t3"), | ||
roundb!(61, "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1" , "$t2"), | ||
roundb!(62, "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0" , "$t1"), | ||
roundb!(63, "$t1" , "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t0"), | ||
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// Update state registers | ||
"ld.w $a4, $a0, 0", // a | ||
"ld.w $a5, $a0, 4", // b | ||
"ld.w $a6, $a0, 8", // c | ||
"ld.w $a7, $a0, 12", // d | ||
"add.w $t0, $t0, $a4", | ||
"add.w $t1, $t1, $a5", | ||
"add.w $t2, $t2, $a6", | ||
"add.w $t3, $t3, $a7", | ||
"ld.w $a4, $a0, 16", // e | ||
"ld.w $a5, $a0, 20", // f | ||
"ld.w $a6, $a0, 24", // g | ||
"ld.w $a7, $a0, 28", // h | ||
"add.w $t4, $t4, $a4", | ||
"add.w $t5, $t5, $a5", | ||
"add.w $t6, $t6, $a6", | ||
"add.w $t7, $t7, $a7", | ||
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// Save updated state | ||
"st.w $t0, $a0, 0", | ||
"st.w $t1, $a0, 4", | ||
"st.w $t2, $a0, 8", | ||
"st.w $t3, $a0, 12", | ||
"st.w $t4, $a0, 16", | ||
"st.w $t5, $a0, 20", | ||
"st.w $t6, $a0, 24", | ||
"st.w $t7, $a0, 28", | ||
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// Looping over blocks | ||
"addi.d $a1, $a1, 64", | ||
"addi.d $a2, $a2, -1", | ||
"bnez $a2, 42b", | ||
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// Restore stack register | ||
"addi.d $sp, $sp, 64", | ||
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in("$a0") state, | ||
inout("$a1") blocks.as_ptr() => _, | ||
inout("$a2") blocks.len() => _, | ||
in("$a3") crate::consts::K32.as_ptr(), | ||
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// Clobbers | ||
out("$a4") _, | ||
out("$a5") _, | ||
out("$a6") _, | ||
out("$a7") _, | ||
out("$t0") _, | ||
out("$t1") _, | ||
out("$t2") _, | ||
out("$t3") _, | ||
out("$t4") _, | ||
out("$t5") _, | ||
out("$t6") _, | ||
out("$t7") _, | ||
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options(preserves_flags), | ||
); | ||
} | ||
} |
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