mii/rsrv
1
0
Fork 0
mirror of https://github.com/mii443/rsrv.git synced 2025-08-22 16:35:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

fix overflow

Browse Source
This commit is contained in:
mii
2023-07-05 15:19:27 +00:00
parent a922656a99
commit 79fda1a172
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/rv.rs
View File

@ -43,24 +43,24 @@ pub struct RV {
}
extern "C" fn rv_load_cb(user: *mut c_void, addr: u32, data: *mut u8) -> u32 {
if (addr - 0x80000000) > 0x10000 {
if (addr.wrapping_sub(0x80000000)) > 0x10000 {
return RV_BAD;
}
unsafe {
*data = *(user.offset((addr - 0x80000000) as isize) as *mut u8);
*data = *(user.offset((addr.wrapping_sub(0x80000000)) as isize) as *mut u8);
}
RV_OK
}
extern "C" fn rv_store_cb(user: *mut c_void, addr: u32, data: u8) -> u32 {
if (addr - 0x80000000) > 0x10000 {
if (addr.wrapping_sub(0x80000000)) > 0x10000 {
return RV_BAD;
}
unsafe {
*(user.offset((addr - 0x80000000) as isize) as *mut u8) = data;
*(user.offset((addr.wrapping_sub(0x80000000)) as isize) as *mut u8) = data;
}
RV_OK