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Shrinking alloy memory interface so that alloy-sandbox doesn't need xe.

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This commit is contained in:
Ben Vanik
2014-08-19 21:02:15 -07:00
parent 76d524b655
commit 48a0e5c601
23 changed files with 230 additions and 192 deletions
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4
src/alloy/backend/ivm/ivm_intcode.cc
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@@ -1499,7 +1499,9 @@ int Translate_LOAD(TranslationContext& ctx, Instr* i) {
void MarkPageDirty(IntCodeState& ics, uint32_t address) {
// 16KB pages.
ics.page_table[(address >> 14) & 0x7FFF] = 1;
if (ics.page_table) {
ics.page_table[(address >> 14) & 0x7FFF] = 1;
}
}
uint32_t IntCode_STORE_I8(IntCodeState& ics, const IntCode* i) {
uint32_t address = ics.rf[i->src1_reg].u32;

9
src/alloy/backend/x64/x64_sequences.cc
View File

@@ -1557,9 +1557,12 @@ EMITTER_OPCODE_TABLE(
// Note: most *should* be aligned, but needs to be checked!
void EmitMarkPageDirty(X64Emitter& e, RegExp& addr) {
// 16KB pages.
e.shr(e.eax, 14);
e.and(e.eax, 0x7FFF);
e.mov(e.byte[e.rdx + e.rax + e.page_table_address()], 1);
auto page_table_address = e.page_table_address();
if (page_table_address) {
e.shr(e.eax, 14);
e.and(e.eax, 0x7FFF);
e.mov(e.byte[e.rdx + e.rax + page_table_address], 1);
}
}
EMITTER(STORE_I8, MATCH(I<OPCODE_STORE, VoidOp, I64<>, I8<>>)) {
static void Emit(X64Emitter& e, const EmitArgType& i) {