Devnet test transaction call data for Osaka

[OlivierBBB]

MODEXP test vectors

Calling MODEXP in a smart contract

If we provide the call data via the transaction we should do something akin to copy the transaction's call data in full to RAM.

// do a full copy of call data to RAM

CALLDATASIZE
PUSH0
PUSH0
CALLDATACOPY

This pre-populates memory with relevant call data for the MODEXP call to come. A CALL to MODEXP with the following parameters should then follow

// the CALL to MODEXP

PUSH2 rac   // rac = 1024
PUSH2 rao   // rao = 96 + 3*1024
PUSH2 cds   // cds = 96 + 3*1024
PUSH0       // zero call data offset
PUSH0       // zero value
PUSH20 0x0000000000000000000000000000000000000005
GAS
CALL 

Transaction call data

Transaction call data shoud look like so

< 32 bytes for bbs > < 32 bytes for ebs > < 32 bytes for mbs > < base, exponent, modulus proper>

// bbs = base byte size
// ebs = exponent byte size
// mbs = modulus byte size

e.g.

00000000000000000000000000000000000000000000000000000000000003ff 0000000000000000000000000000000000000000000000000000000000000020 0000000000000000000000000000000000000000000000000000000000000020 < gibberish >
<----------------------------bbs-------------------------------> <----------------------------ebs-------------------------------> <----------------------------mbs-------------------------------> <data proper>

in each case these initial 96 bytes being followed by 3 * 1024 random (nonzero) bytes

and again being followed by by 3 * 1024 random (nonzero) bytes (that shouldn't matter in any case)

Purpose

The purpose of the above is twofold:

• the first tests are there to test the new legal range of MODEXP calls as per Osaka
• the next tests are there to test the internal handling out of bounds of MODEXP calls without the sequencer rejecting the transaction

[thedarkjester]

On Devnet: 0xe41F1F9E2477C508decceD102B5b5609Af85c305

For each of the 7 scenarios, you can use the specific calldata below:

0x000000000000000000000000000000000000000000000000000000000000020100000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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[thedarkjester]

You can load up Remix, with the following (create a testModExp.abi file and open it)

[
	{
		"payable": true,
		"stateMutability": "payable",
		"type": "fallback"
	}
]

Then you can (after connecting to injected provider) load at address: 0xdD5eee2C88c2658ABD2006aa330F69880E052af4 - confirm you want to interact with it.

Add the calldata in the last comment to test

[OlivierBBB]

Very large, EVM unsupported MODEXP calls

Same thing, but with memory having been pre-populated with one of the following

// VERY large base byte size case
0000000000000000000000000000000000000000000000000000000000000401 // 1025
0000000000000000000000000000000000000000000000000000000000000100
0000000000000000000000000000000000000000000000000000000000000100

// VERY large exponent byte size case
0000000000000000000000000000000000000000000000000000000000000100
000000000000000000000000000000000000000000000000000000000000ffff // 65535
0000000000000000000000000000000000000000000000000000000000000100

// VERY large modulus byte size case
0000000000000000000000000000000000000000000000000000000000000100
0000000000000000000000000000000000000000000000000000000000000100
0000000000000000000000000000000100000000000000000000000000000000 // 2**128

// humongous everything
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
1111111111111111111111111111111111111111111111111111111111111111
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

[OlivierBBB]

Large, EVM supported MODEXP

// large base byte size case
0000000000000000000000000000000000000000000000000000000000000201 // 513
0000000000000000000000000000000000000000000000000000000000000100
0000000000000000000000000000000000000000000000000000000000000100

// large exponent byte size case
0000000000000000000000000000000000000000000000000000000000000100
0000000000000000000000000000000000000000000000000000000000000300 // 768
0000000000000000000000000000000000000000000000000000000000000100

// large modulus byte size case
0000000000000000000000000000000000000000000000000000000000000100
0000000000000000000000000000000000000000000000000000000000000100
0000000000000000000000000000000000000000000000000000000000000400 // 1024

[OlivierBBB]

Moderate unsupported MODEXP calls

// large base byte size case
0000000000000000000000000000000000000000000000000000000000000201 // 513
0000000000000000000000000000000000000000000000000000000000000040
0000000000000000000000000000000000000000000000000000000000000020

cost = 2 * words^2 * max(0 + 16 * 32, 1)
     = 2 * 65**2 * 16 * 32
     = 4_326_400

// large base byte size case
0000000000000000000000000000000000000000000000000000000000000020
0000000000000000000000000000000000000000000000000000000000000201 // 513
0000000000000000000000000000000000000000000000000000000000000020

cost = 2 * words^2 * max(0 + 16 * (513 - 32), 1)
     = 2 * 4**2 * 16 * (513 - 32)
     = 246_272

// large base byte size case
0000000000000000000000000000000000000000000000000000000000000020
0000000000000000000000000000000000000000000000000000000000000030
0000000000000000000000000000000000000000000000000000000000000201 // 513

cost = 2 * words^2 * max(0 + 16 * 16, 1)
     = 2 * 65**2 * 16 * 16
     = 2_163_200

[OlivierBBB]

Minimalist unsupported MODEXP calls

// large base byte size case
0000000000000000000000000000000000000000000000000000000000000201 // 513
0000000000000000000000000000000000000000000000000000000000000001
0000000000000000000000000000000000000000000000000000000000000001

cost = 2 * words^2 * max(0 + 16 * 0, 1)
     = 2 * 65**2 * 1
     = 8_450

// large base byte size case
0000000000000000000000000000000000000000000000000000000000000001
0000000000000000000000000000000000000000000000000000000000000201 // 513
0000000000000000000000000000000000000000000000000000000000000001

cost = 2 * words^2 * max(0 + 16 * (513 - 32), 1)
     = 2 * 1**2 * 16 * (513 - 32)
     = 15_392

// large base byte size case
0000000000000000000000000000000000000000000000000000000000000001
0000000000000000000000000000000000000000000000000000000000000001
0000000000000000000000000000000000000000000000000000000000000201 // 513

cost = 8_450

[VGau]

Tested the following scenarios:

0x000000000000000000000000000000000000000000000000000000000000020100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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All tests passed. Here are the transactions:

• First case:
  • url: https://explorer.devnet.linea.build/tx/0x00bd98a3d93a307e7fd4e38f9631537ddd44a020641736d6b63228e6e7c41297
  • ReturnData: 0x00
• Second case:
  • url: https://explorer.devnet.linea.build/tx/0x98047f50f467a5c6f5f269f5e56aa19cfecf39b6ed7112ab9870ab600debef27
  • ReturnData: 0x00
• Third case:
  • url: https://explorer.devnet.linea.build/tx/0x13d9a1e21a4540f8a1589163daa6c8e4bede4e2b18d1e6ad3e29a9c34856785a
  • ReturnData: 0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

[OlivierBBB]

@VGau I am confused by these responses. First of all: what is it you call the response ?

These responses, whatever they are, coincide with the expected RETURNDATASIZEs of each call. EVM conventions dictate that a ** b mod 0 always be 0, so these responses cannot be the return data itself.

[VGau]

@VGau I am confused by these responses. First of all: what is it you call the response ?

These responses, whatever they are, coincide with the expected RETURNDATASIZEs of each call. EVM conventions dictate that a ** b mod 0 always be 0, so these responses cannot be the return data itself.

My bad, I put returnData size instead of returnData :) I updated my previous comment.

[OlivierBBB]

Thanks @VGau. For the testing itself the various test vectors are of interest, and it would be most interesting if the call data did indeed contain some random gibberish following the initial 96 bytes.