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Improve handling of memory.grow/size, add a standalone wast runner,
test harness improvements.
This commit is contained in:
Dan Gohman
2018-12-03 04:59:40 -08:00
parent 83f8a31010
commit 7faa15d7ac
15 changed files with 316 additions and 82 deletions
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17
lib/environ/src/tunables.rs
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@@ -4,8 +4,11 @@ pub struct Tunables {
/// For static heaps, the size of the heap protected by bounds checking.
pub static_memory_bound: u32,
/// The size of the offset guard.
pub offset_guard_size: u64,
/// The size of the offset guard for static heaps.
pub static_memory_offset_guard_size: u64,
/// The size of the offset guard for dynamic heaps.
pub dynamic_memory_offset_guard_size: u64,
}
impl Default for Tunables {
@@ -17,11 +20,17 @@ impl Default for Tunables {
/// need for explicit bounds checks.
static_memory_bound: 0x1_0000,
/// Size in bytes of the offset guard.
/// Size in bytes of the offset guard for static memories.
///
/// Allocating 2 GiB of address space lets us translate wasm
/// offsets into x86 offsets as aggressively as we can.
offset_guard_size: 0x8000_0000,
static_memory_offset_guard_size: 0x8000_0000,
/// Size in bytes of the offset guard for dynamic memories.
///
/// Allocate a small guard to optimize common cases but without
/// wasting too much memor.
dynamic_memory_offset_guard_size: 0x1_0000,
}
}
}