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memory commands

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This commit is contained in:
Nicholas Ward 2022-07-21 15:04:33 -07:00
parent eb6095cd04
commit 8dbb653a54
1 changed files with 10 additions and 10 deletions
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20
evm/src/cpu/kernel/asm/sha2.asm
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@ -1,19 +1,19 @@
sha2_test_input:
BYTES 0x4
BYTES 0x1, 0x2, 0x3, 0x4
// sha2_test_input:
// BYTES 0x4
// BYTES 0x1, 0x2, 0x3, 0x4
// BYTES 0, 0,
// Precodition: input is in memory, starting at [TODO: fix] 0, of the form
// num_bytes, x[0], x[1], ..., x[(num_bytes+31)/32-1]
// Postcodition: output is in memory, starting at [TODO: fix] 0, of the form
// num_blocks, block0[0], block0[1], block1[0], ..., blocklast[1]
// Precodition: input is in memory, starting at 0 of kernel SHA2 segment, of the form
// num_bytes, x[0], x[1], ..., x[num_bytes - 1]
// Postcodition: output is in memory, starting at 0, of the form
// num_blocks, block0[0], ..., block0[63], block1[0], ..., blocklast[63]
global sha2_pad:
// TODO: use kernel memory (SEGMENT_KERNEL_MISC or SEGMENT_KERNEL_SHA2), and instead of 0
// TODO: use kernel memory (SEGMENT_KERNEL_GENERAL), and instead of 0
// stack: retdest
push 0
mload
%mload_kernel_sha2
// stack: num_bytes, retdest
// STEP 1: append 1
// add 1 << (8*(32-k)-1) to x[num_bytes//32], where k := num_bytes%32