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(more) precisely track memory accesses and allocations across FFI #4326

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(more) precisely track memory accesses and allocations across FFI #4326

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201 changes: 193 additions & 8 deletions Cargo.lock
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6 changes: 6 additions & 0 deletions Cargo.toml
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Expand Up @@ -40,6 +40,12 @@ libc = "0.2"
libffi = "4.0.0"
libloading = "0.8"

[target.'cfg(target_os = "linux")'.dependencies]
nix = { version = "0.30.1", features = ["mman", "ptrace", "signal"] }
ipc-channel = "0.19.0"
serde = { version = "1.0.219", features = ["derive"] }
capstone = "0.13"

[target.'cfg(target_family = "windows")'.dependencies]
windows-sys = { version = "0.59", features = [
"Win32_Foundation",
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5 changes: 5 additions & 0 deletions README.md
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Expand Up @@ -412,6 +412,11 @@ to Miri failing to detect cases of undefined behavior in a program.
memory. Finally, the flag is **unsound** in the sense that Miri stops tracking details such as
initialization and provenance on memory shared with native code, so it is easily possible to write
code that has UB which is missed by Miri.
* `-Zmiri-force-old-native-lib-mode` disables the WIP improved native code access tracking. If for
whatever reason enabling native calls leads to odd behaviours or causes Miri to panic, disabling
the tracer *might* fix this. This will likely be removed once the tracer has been adequately
battle-tested. Note that this flag is only meaningful on Linux systems; other Unixes (currently)
exclusively use the old native-lib code.
* `-Zmiri-measureme=<name>` enables `measureme` profiling for the interpreted program.
This can be used to find which parts of your program are executing slowly under Miri.
The profile is written out to a file inside a directory called `<name>`, and can be processed
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