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Make alignment magic number constants

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This commit is contained in:
bjorn3
2019-04-24 19:53:24 +02:00
committed by Benjamin Bouvier
parent 556d5d45e9
commit 8216b83c65
1 changed files with 7 additions and 3 deletions
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10
cranelift/simplejit/src/backend.rs
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@@ -17,6 +17,10 @@ use target_lexicon::PointerWidth;
#[cfg(windows)] #[cfg(windows)]
use winapi; use winapi;
const EXECUTABLE_DATA_ALIGNMENT: u8 = 0x10;
const WRITABLE_DATA_ALIGNMENT: u8 = 0x8;
const READONLY_DATA_ALIGNMENT: u8 = 0x1;
/// A builder for `SimpleJITBackend`. /// A builder for `SimpleJITBackend`.
pub struct SimpleJITBuilder { pub struct SimpleJITBuilder {
isa: Box<TargetIsa>, isa: Box<TargetIsa>,
@@ -229,7 +233,7 @@ impl<'simple_jit_backend> Backend for SimpleJITBackend {
let size = code_size as usize; let size = code_size as usize;
let ptr = self let ptr = self
.code_memory .code_memory
.allocate(size, 0x10) .allocate(size, EXECUTABLE_DATA_ALIGNMENT)
.expect("TODO: handle OOM etc."); .expect("TODO: handle OOM etc.");
if cfg!(target_os = "linux") && ::std::env::var_os("PERF_BUILDID_DIR").is_some() { if cfg!(target_os = "linux") && ::std::env::var_os("PERF_BUILDID_DIR").is_some() {
@@ -274,11 +278,11 @@ impl<'simple_jit_backend> Backend for SimpleJITBackend {
let size = init.size(); let size = init.size();
let storage = if writable { let storage = if writable {
self.writable_memory self.writable_memory
.allocate(size, align.unwrap_or(0x8)) .allocate(size, align.unwrap_or(WRITABLE_DATA_ALIGNMENT))
.expect("TODO: handle OOM etc.") .expect("TODO: handle OOM etc.")
} else { } else {
self.readonly_memory self.readonly_memory
.allocate(size, align.unwrap_or(1)) .allocate(size, align.unwrap_or(READONLY_DATA_ALIGNMENT))
.expect("TODO: handle OOM etc.") .expect("TODO: handle OOM etc.")
}; };