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Replace %stack calls with equivalent opcodes. (#994)

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Hamish Ivey-Law 2023-04-20 01:34:04 +10:00 committed by GitHub
parent 049a258b4a
commit 2e16ab0489
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2 changed files with 47 additions and 14 deletions
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30
evm/src/cpu/kernel/asm/core/precompiles/rip160.asm
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@ -20,13 +20,29 @@ global precompile_rip160:
// Copy the call data to the kernel general segment (ripemd expects it there) and call ripemd.
%calldatasize
GET_CONTEXT
%stack (ctx, size) ->
(
0, @SEGMENT_KERNEL_GENERAL, 200, // DST
ctx, @SEGMENT_CALLDATA, 0, // SRC
size, ripemd, // count, retdest
200, size, rip160_contd // ripemd input: virt, num_bytes, retdest
)
// The next block of code is equivalent to the following %stack macro call
// (unfortunately the macro call takes too long to expand dynamically).
//
// %stack (ctx, size) ->
// (
// 0, @SEGMENT_KERNEL_GENERAL, 200, // DST
// ctx, @SEGMENT_CALLDATA, 0, // SRC
// size, ripemd, // count, retdest
// 200, size, rip160_contd // ripemd input: virt, num_bytes, retdest
// )
PUSH 200
PUSH ripemd
DUP4
PUSH 0
PUSH @SEGMENT_CALLDATA
PUSH rip160_contd
SWAP7
SWAP6
PUSH 200
PUSH @SEGMENT_KERNEL_GENERAL
PUSH 0
%jump(memcpy)
rip160_contd:

31
evm/src/cpu/kernel/asm/core/precompiles/sha256.asm
View File

@ -23,13 +23,30 @@ global precompile_sha256:
// Copy the call data to the kernel general segment (sha2 expects it there) and call sha2.
%calldatasize
GET_CONTEXT
%stack (ctx, size) ->
(
0, @SEGMENT_KERNEL_GENERAL, 1, // DST
ctx, @SEGMENT_CALLDATA, 0, // SRC
size, sha2, // count, retdest
0, size, sha256_contd // sha2 input: virt, num_bytes, retdest
)
// The next block of code is equivalent to the following %stack macro call
// (unfortunately the macro call takes too long to expand dynamically).
//
// %stack (ctx, size) ->
// (
// 0, @SEGMENT_KERNEL_GENERAL, 1, // DST
// ctx, @SEGMENT_CALLDATA, 0, // SRC
// size, sha2, // count, retdest
// 0, size, sha256_contd // sha2 input: virt, num_bytes, retdest
// )
//
PUSH 0
PUSH sha2
DUP4
PUSH 0
PUSH @SEGMENT_CALLDATA
PUSH sha256_contd
SWAP7
SWAP6
PUSH 1
PUSH @SEGMENT_KERNEL_GENERAL
PUSH 0
%jump(memcpy)
sha256_contd: