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Merge pull request #3908 from mohanson/script_version_2
script: Add script version 2
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| use crate::syscalls::GET_MEMORY_LIMIT; | ||
| use ckb_vm::{ | ||
| registers::{A0, A7}, | ||
| Error as VMError, Register, SupportMachine, Syscalls, | ||
| }; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct GetMemoryLimit { | ||
| memory_limit: u64, | ||
| } | ||
|
|
||
| impl GetMemoryLimit { | ||
| pub fn new(memory_limit: u64) -> Self { | ||
| Self { memory_limit } | ||
| } | ||
| } | ||
|
|
||
| impl<Mac: SupportMachine> Syscalls<Mac> for GetMemoryLimit { | ||
| fn initialize(&mut self, _machine: &mut Mac) -> Result<(), VMError> { | ||
| Ok(()) | ||
| } | ||
|
|
||
| fn ecall(&mut self, machine: &mut Mac) -> Result<bool, VMError> { | ||
| if machine.registers()[A7].to_u64() != GET_MEMORY_LIMIT { | ||
| return Ok(false); | ||
| } | ||
| machine.set_register(A0, Mac::REG::from_u64(self.memory_limit)); | ||
| Ok(true) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| use crate::cost_model::transferred_byte_cycles; | ||
| use crate::syscalls::utils::load_bytes; | ||
| use crate::syscalls::SET_CONTENT; | ||
| use ckb_vm::{ | ||
| registers::{A0, A1, A7}, | ||
| Error as VMError, Memory, Register, SupportMachine, Syscalls, | ||
| }; | ||
| use std::sync::{Arc, Mutex}; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct SetContent { | ||
| content: Arc<Mutex<Vec<u8>>>, | ||
| content_size: u64, | ||
| } | ||
|
|
||
| impl SetContent { | ||
| pub fn new(content: Arc<Mutex<Vec<u8>>>, content_size: u64) -> Self { | ||
| Self { | ||
| content, | ||
| content_size, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl<Mac: SupportMachine> Syscalls<Mac> for SetContent { | ||
| fn initialize(&mut self, _machine: &mut Mac) -> Result<(), VMError> { | ||
| Ok(()) | ||
| } | ||
|
|
||
| fn ecall(&mut self, machine: &mut Mac) -> Result<bool, VMError> { | ||
| if machine.registers()[A7].to_u64() != SET_CONTENT { | ||
| return Ok(false); | ||
| } | ||
| let content_addr = machine.registers()[A0].to_u64(); | ||
| let request_size_addr = machine.registers()[A1].to_u64(); | ||
| let request_size = machine | ||
| .memory_mut() | ||
| .load64(&Mac::REG::from_u64(request_size_addr))?; | ||
| let size = std::cmp::min(self.content_size, request_size.to_u64()); | ||
| self.content.lock().unwrap().resize(size as usize, 0); | ||
| let content = load_bytes(machine, content_addr, size)?; | ||
| self.content.lock().unwrap().copy_from_slice(&content); | ||
| machine.memory_mut().store64( | ||
| &Mac::REG::from_u64(request_size_addr), | ||
| &Mac::REG::from_u64(size), | ||
| )?; | ||
| machine.add_cycles_no_checking(transferred_byte_cycles(size))?; | ||
| machine.set_register(A0, Mac::REG::from_u64(0)); | ||
| Ok(true) | ||
| } | ||
| } |
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