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|
// |jit-test| skip-if: !largeArrayBufferSupported(); allow-oom
var pagesz = PageSizeInBytes;
var pages_limit = MaxPagesIn32BitMemory;
// 40000 is well above 2GB but not anything that might run into boundary
// conditions near 4GB.
var pages_vanilla = 40000;
for ( let [pages,maxpages] of [[pages_vanilla, pages_vanilla+100],
[pages_limit - 3, pages_limit],
[pages_limit, pages_limit]] ) {
assertEq(pages == maxpages || maxpages - pages >= 3, true)
let ins = wasmEvalText(`
(module
(memory (export "mem") ${pages} ${maxpages})
(data (i32.const ${(pages-5)*pagesz}) "yabbadabbado")
(data $flintstone "yabbadabbado")
(func (export "get_constaddr") (result i32)
(i32.load (i32.const ${pages*pagesz-4})))
(func (export "get_varaddr") (param $p i32) (result i32)
(i32.load (local.get $p)))
(func (export "set_constaddr") (param $v i32)
(i32.store (i32.const ${pages*pagesz-8}) (local.get $v)))
(func (export "set_varaddr") (param $p i32) (param $v i32)
(i32.store (local.get $p) (local.get $v)))
(func (export "get_constaddr_large_offset") (result i32)
(i32.load offset=${(pages-100)*pagesz-4} (i32.const ${pagesz*100})))
(func (export "get_varaddr_large_offset") (param $p i32) (result i32)
(i32.load offset=${(pages-100)*pagesz-4} (local.get $p)))
(func (export "get_constaddr_small_offset") (result i32)
(i32.load offset=${pagesz-4} (i32.const ${(pages-1)*pagesz})))
(func (export "get_varaddr_small_offset") (param $p i32) (result i32)
(i32.load offset=${pagesz-4} (local.get $p)))
(func (export "set_constaddr_large_offset") (param $v i32)
(i32.store offset=${(pages-100)*pagesz-16} (i32.const ${pagesz*100}) (local.get $v)))
(func (export "set_varaddr_large_offset") (param $p i32) (param $v i32)
(i32.store offset=${(pages-100)*pagesz-20} (local.get $p) (local.get $v)))
(func (export "set_constaddr_small_offset") (param $v i32)
(i32.store offset=${pagesz-24} (i32.const ${(pages-1)*pagesz}) (local.get $v)))
(func (export "set_varaddr_small_offset") (param $p i32) (param $v i32)
(i32.store offset=${pagesz-28} (local.get $p) (local.get $v)))
(func (export "copy") (param $dest i32) (param $src i32)
(memory.copy (local.get $dest) (local.get $src) (i32.const 12)))
(func (export "init") (param $dest i32)
(memory.init $flintstone (local.get $dest) (i32.const 0) (i32.const 12)))
(func (export "fill") (param $dest i32) (param $val i32) (param $len i32)
(memory.fill (local.get 0) (local.get 1) (local.get 2)))
(func (export "grow1") (result i32)
(memory.grow (i32.const 1)))
)`);
let buf = new Int32Array(ins.exports.mem.buffer);
let checkFlintstoneAt = function (addr) {
assertEq(buf[addr/4], 0x62626179) // "yabb", little-endian
assertEq(buf[addr/4+1], 0x62616461) // "adab", ditto
assertEq(buf[addr/4+2], 0x6f646162) // "bado"
}
buf[pages*pagesz/4-1] = 0xdeadbeef;
assertEq(ins.exports.get_constaddr(), 0xdeadbeef|0);
assertEq(ins.exports.get_varaddr(pages*pagesz-4), 0xdeadbeef|0);
assertEq(ins.exports.get_constaddr_large_offset(), 0xdeadbeef|0);
assertEq(ins.exports.get_varaddr_large_offset(pagesz*100), 0xdeadbeef|0);
assertEq(ins.exports.get_constaddr_small_offset(), 0xdeadbeef|0);
assertEq(ins.exports.get_varaddr_small_offset((pages-1)*pagesz), 0xdeadbeef|0);
ins.exports.set_constaddr(0xcafebab0);
assertEq(buf[pages*pagesz/4-2], 0xcafebab0|0);
ins.exports.set_varaddr(pages*pagesz-12, 0xcafebab1);
assertEq(buf[pages*pagesz/4-3], 0xcafebab1|0);
ins.exports.set_constaddr_large_offset(0xcafebab2);
assertEq(buf[pages*pagesz/4-4], 0xcafebab2|0);
ins.exports.set_varaddr_large_offset(pagesz*100, 0xcafebab3);
assertEq(buf[pages*pagesz/4-5], 0xcafebab3|0);
ins.exports.set_constaddr_small_offset(0xcafebab4);
assertEq(buf[pages*pagesz/4-6], 0xcafebab4|0);
ins.exports.set_varaddr_small_offset((pages-1)*pagesz, 0xcafebab5);
assertEq(buf[pages*pagesz/4-7], 0xcafebab5|0);
if (pages*pagesz < 0x1_0000_0000) {
assertErrorMessage(() => ins.exports.get_varaddr(pages*pagesz),
WebAssembly.RuntimeError,
/index out of bounds/);
}
assertErrorMessage(() => ins.exports.get_varaddr_large_offset(pagesz*100+4),
WebAssembly.RuntimeError,
/index out of bounds/);
assertErrorMessage(() => ins.exports.get_varaddr_small_offset((pages-1)*pagesz+4),
WebAssembly.RuntimeError,
/index out of bounds/);
ins.exports.set_varaddr(pages*pagesz-4, 0); // Should work
if (pages*pagesz < 0x1_0000_0000) {
assertErrorMessage(() => ins.exports.set_varaddr(pages*pagesz, 0),
WebAssembly.RuntimeError,
/index out of bounds/);
}
ins.exports.set_varaddr_large_offset(pagesz*100+16, 0); // Should work
assertErrorMessage(() => ins.exports.set_varaddr_large_offset(pagesz*100+20, 0),
WebAssembly.RuntimeError,
/index out of bounds/);
ins.exports.set_varaddr_small_offset((pages-1)*pagesz+24); // Should work
assertErrorMessage(() => ins.exports.set_varaddr_small_offset((pages-1)*pagesz+28, 0),
WebAssembly.RuntimeError,
/index out of bounds/);
// Active init
checkFlintstoneAt((pages-5)*pagesz);
// memory.init
ins.exports.init((pages-6)*pagesz);
checkFlintstoneAt((pages-6)*pagesz);
ins.exports.init(pages*pagesz-12); // Should work
// Dest goes OOB
assertErrorMessage(() => ins.exports.init(pages*pagesz-6),
WebAssembly.RuntimeError,
/index out of bounds/);
// memory.copy
// Dest and src are in bounds
ins.exports.copy((pages-10)*pagesz, (pages-5)*pagesz);
checkFlintstoneAt((pages-10)*pagesz);
// Dest goes OOB
assertErrorMessage(() => ins.exports.copy((pages)*pagesz-6, (pages-5)*pagesz, 12),
WebAssembly.RuntimeError,
/index out of bounds/);
ins.exports.copy((pages)*pagesz-12, (pages-1)*pagesz); // Should work
// Src goes OOB
assertErrorMessage(() => ins.exports.copy((pages)*pagesz-12, (pages)*pagesz-6),
WebAssembly.RuntimeError,
/index out of bounds/);
// memory.fill
let lastpg = (pages-1)*pagesz;
ins.exports.fill(lastpg, 0x37, pagesz);
for ( let i=0; i < pagesz/4; i++ )
assertEq(buf[lastpg/4+i], 0x37373737);
assertErrorMessage(() => ins.exports.fill(lastpg, 0x42, pagesz+1),
WebAssembly.RuntimeError,
/index out of bounds/);
done:
if (pages < maxpages) {
let res = 0;
res = ins.exports.grow1();
if (res == -1) break done;
assertEq(res, pages);
res = ins.exports.grow1();
if (res == -1) break done;
assertEq(res, pages+1);
res = ins.exports.grow1();
if (res == -1) break done;
assertEq(res, pages+2);
assertEq(ins.exports.get_varaddr((pages+2)*pagesz), 0);
let i = 0;
while (ins.exports.grow1() != -1) {
i++;
}
// We can't assert equality because we might OOM before we get to the
// max, but we can assert we did not go beyond that.
assertEq(i <= maxpages-pages-3, true);
}
}
// Very large offsets should be allowed (but may of course be OOB). Observe
// that offset=0xffffffff is accepted by the validator even though this access
// could never succeed.
{
let ins = wasmEvalText(`
(module
(memory (export "mem") 1)
(func (export "get1") (param $p i32) (result i32)
(i32.load offset=0x80000000 (local.get $p)))
(func (export "get2") (param $p i32) (result i32)
(i32.load offset=0xfffffffc (local.get $p)))
(func (export "get3") (param $p i32) (result i32)
(i32.load offset=0xffffffff (local.get $p))))
`);
assertErrorMessage(() => ins.exports.get1(0),
WebAssembly.RuntimeError,
/index out of bounds/);
assertErrorMessage(() => ins.exports.get2(0),
WebAssembly.RuntimeError,
/index out of bounds/);
assertErrorMessage(() => ins.exports.get3(0),
WebAssembly.RuntimeError,
/index out of bounds/);
}
{
let ins = wasmEvalText(`
(module
(memory (export "mem") 32768)
(func (export "get1") (param $p i32) (result i32)
(i32.load8_s offset=0x7fffffff (local.get $p))))
`);
assertEq(ins.exports.get1(0), 0);
assertErrorMessage(() => ins.exports.get1(1),
WebAssembly.RuntimeError,
/index out of bounds/);
assertErrorMessage(() => ins.exports.get1(-1),
WebAssembly.RuntimeError,
/index out of bounds/);
}
{
let ins = wasmEvalText(`
(module
(memory (export "mem") 32769)
(func (export "get1") (param $p i32) (result i32)
(i32.load8_s offset=0x80000000 (local.get $p))))
`);
assertEq(ins.exports.get1(0), 0);
assertEq(ins.exports.get1(65535), 0);
assertErrorMessage(() => ins.exports.get1(65536),
WebAssembly.RuntimeError,
/index out of bounds/);
}
{
let ins = wasmEvalText(`
(module
(memory (export "mem") ${pages_limit})
(func (export "get1") (param $p i32) (result i32)
(i32.load8_s offset=${pages_limit*pagesz-1} (local.get $p))))
`);
assertEq(ins.exports.get1(0), 0);
assertErrorMessage(() => ins.exports.get1(1),
WebAssembly.RuntimeError,
/index out of bounds/);
assertErrorMessage(() => ins.exports.get1(-1),
WebAssembly.RuntimeError,
/index out of bounds/);
}
// Fail to grow at the declared max
// Import and export
{
let ins = wasmEvalText(`
(module
(memory (export "mem") ${pages_limit} ${pages_limit})
(func (export "set_it") (param $addr i32) (param $val i32)
(i32.store (local.get $addr) (local.get $val)))
(func (export "grow1") (result i32)
(memory.grow (i32.const 1)))
)`);
assertEq(ins.exports.grow1(), -1); // Because initial == max
let ins2 = wasmEvalText(`
(module
(import "" "mem" (memory 1))
(func (export "get_it") (param $addr i32) (result i32)
(i32.load (local.get $addr)))
)`,
{"":ins.exports})
ins.exports.set_it((pages_limit*pagesz)-4, 0xbaadf00d);
assertEq(ins2.exports.get_it((pages_limit*pagesz)-4), 0xbaadf00d|0)
}
// Fail to grow at the max heap size even if there is headroom
// in the declared max
if (pages_limit < 65536) {
let ins = wasmEvalText(`
(module
(memory (export "mem") ${pages_limit} ${pages_limit+2})
(func (export "grow1") (result i32)
(memory.grow (i32.const 1)))
)`);
assertEq(ins.exports.grow1(), -1); // Because current is at the max heap size
}
// Fail to instantiate when the minimum is larger than the max heap size
if (pages_limit < 65536) {
assertErrorMessage(() => wasmEvalText(`
(module (memory (export "mem") ${pages_limit+1} ${pages_limit+1}))
`),
WebAssembly.RuntimeError,
/too many memory pages/);
}
|
