diff options
Diffstat (limited to 'src/target/ext/base/singlethread.rs')
| -rw-r--r-- | src/target/ext/base/singlethread.rs | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/src/target/ext/base/singlethread.rs b/src/target/ext/base/singlethread.rs index c949886..40b002e 100644 --- a/src/target/ext/base/singlethread.rs +++ b/src/target/ext/base/singlethread.rs @@ -2,7 +2,8 @@ use crate::arch::Arch; use crate::common::Signal; -use crate::target::{Target, TargetResult}; +use crate::target::Target; +use crate::target::TargetResult; /// Base required debugging operations for single threaded targets. pub trait SingleThreadBase: Target { @@ -32,16 +33,24 @@ pub trait SingleThreadBase: Target { None } - /// Read bytes from the specified address range. + /// Read bytes from the specified address range and return the number of + /// bytes that were read. /// - /// If the requested address range could not be accessed (e.g: due to - /// MMU protection, unhanded page fault, etc...), an appropriate - /// non-fatal error should be returned. + /// Implementations may return a number `n` that is less than `data.len()` + /// to indicate that memory starting at `start_addr + n` cannot be + /// accessed. + /// + /// Implemenations may also return an appropriate non-fatal error if the + /// requested address range could not be accessed (e.g: due to MMU + /// protection, unhanded page fault, etc...). + /// + /// Implementations must guarantee that the returned number is less than or + /// equal `data.len()`. fn read_addrs( &mut self, start_addr: <Self::Arch as Arch>::Usize, data: &mut [u8], - ) -> TargetResult<(), Self>; + ) -> TargetResult<usize, Self>; /// Write bytes to the specified address range. /// |