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Support 32-bit build. #44

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Merged
sunfishcode merged 2 commits into from
Jan 24, 2019
Merged

Support 32-bit build. #44

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cbcf018
Support 32-bit build.
kanaka Jan 21, 2019
7213de5
Fix compilation issues with rustc 1.31.1
kanaka Jan 23, 2019
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8 changes: 8 additions & 0 deletions lib/environ/src/tunables.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,12 +14,20 @@ pub struct Tunables {
impl Default for Tunables {
fn default() -> Self {
Self {
#[cfg(target_pointer_width = "32")]
/// Size in wasm pages of the bound for static memories.
static_memory_bound: 0x4000,
#[cfg(target_pointer_width = "64")]
/// Size in wasm pages of the bound for static memories.
///
/// When we allocate 4 GiB of address space, we can avoid the
/// need for explicit bounds checks.
static_memory_bound: 0x1_0000,

#[cfg(target_pointer_width = "32")]
/// Size in bytes of the offset guard for static memories.
static_memory_offset_guard_size: 0x1_0000,
#[cfg(target_pointer_width = "64")]
/// Size in bytes of the offset guard for static memories.
///
/// Allocating 2 GiB of address space lets us translate wasm
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