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Make the mmap64 implementation Linux-specific.

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`mmap64` is only defined on Linux, so move the implementation
to Linux-specific code.
This commit is contained in:
Dan Gohman 2024-02-11 05:09:27 -08:00
parent aa406341b4
commit 438f43c7a0
2 changed files with 9 additions and 6 deletions
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6
src/tools/miri/src/shims/unix/foreign_items.rs
View file

@ -266,12 +266,6 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
let ptr = this.mmap(addr, length, prot, flags, fd, offset)?;
this.write_scalar(ptr, dest)?;
}
"mmap64" => {
let [addr, length, prot, flags, fd, offset] = this.check_shim(abi, Abi::C {unwind: false}, link_name, args)?;
let offset = this.read_scalar(offset)?.to_i64()?;
let ptr = this.mmap(addr, length, prot, flags, fd, offset.into())?;
this.write_scalar(ptr, dest)?;
}
"munmap" => {
let [addr, length] = this.check_shim(abi, Abi::C {unwind: false}, link_name, args)?;
let result = this.munmap(addr, length)?;

9
src/tools/miri/src/shims/unix/linux/foreign_items.rs
View file

@ -9,6 +9,7 @@ use shims::unix::fs::EvalContextExt as _;
use shims::unix::linux::fd::EvalContextExt as _;
use shims::unix::linux::mem::EvalContextExt as _;
use shims::unix::linux::sync::futex;
use shims::unix::mem::EvalContextExt as _;
use shims::unix::sync::EvalContextExt as _;
use shims::unix::thread::EvalContextExt as _;
@ -217,6 +218,14 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
this.write_null(dest)?;
}
"mmap64" => {
let [addr, length, prot, flags, fd, offset] =
this.check_shim(abi, Abi::C { unwind: false }, link_name, args)?;
let offset = this.read_scalar(offset)?.to_i64()?;
let ptr = this.mmap(addr, length, prot, flags, fd, offset.into())?;
this.write_scalar(ptr, dest)?;
}
_ => return Ok(EmulateForeignItemResult::NotSupported),
};