fabi/Xenia-Canary
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Dirty page table. Not yet used.

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This commit is contained in:
Ben Vanik
2014-06-02 07:49:45 -07:00
parent ddbebcda6c
commit beb5ee40ee
9 changed files with 56 additions and 3 deletions
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11
src/alloy/backend/ivm/ivm_intcode.cc
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@@ -1445,6 +1445,10 @@ int Translate_LOAD(TranslationContext& ctx, Instr* i) {
return DispatchToC(ctx, i, fns[i->dest->type]);
}
void MarkPageDirty(IntCodeState& ics, uint32_t address) {
// 16KB pages.
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;
if (DYNAMIC_REGISTER_ACCESS_CHECK(address)) {
@@ -1455,6 +1459,7 @@ uint32_t IntCode_STORE_I8(IntCodeState& ics, const IntCode* i) {
address, ics.rf[i->src2_reg].i8, ics.rf[i->src2_reg].u8);
DFLUSH();
*((int8_t*)(ics.membase + address)) = ics.rf[i->src2_reg].i8;
MarkPageDirty(ics, address);
return IA_NEXT;
}
uint32_t IntCode_STORE_I16(IntCodeState& ics, const IntCode* i) {
@@ -1468,6 +1473,7 @@ uint32_t IntCode_STORE_I16(IntCodeState& ics, const IntCode* i) {
address, ics.rf[i->src2_reg].i16, ics.rf[i->src2_reg].u16);
DFLUSH();
*((int16_t*)(ics.membase + address)) = ics.rf[i->src2_reg].i16;
MarkPageDirty(ics, address);
return IA_NEXT;
}
uint32_t IntCode_STORE_I32(IntCodeState& ics, const IntCode* i) {
@@ -1481,6 +1487,7 @@ uint32_t IntCode_STORE_I32(IntCodeState& ics, const IntCode* i) {
address, ics.rf[i->src2_reg].i32, ics.rf[i->src2_reg].u32);
DFLUSH();
*((int32_t*)(ics.membase + address)) = ics.rf[i->src2_reg].i32;
MarkPageDirty(ics, address);
return IA_NEXT;
}
uint32_t IntCode_STORE_I64(IntCodeState& ics, const IntCode* i) {
@@ -1494,6 +1501,7 @@ uint32_t IntCode_STORE_I64(IntCodeState& ics, const IntCode* i) {
address, ics.rf[i->src2_reg].i64, ics.rf[i->src2_reg].u64);
DFLUSH();
*((int64_t*)(ics.membase + address)) = ics.rf[i->src2_reg].i64;
MarkPageDirty(ics, address);
return IA_NEXT;
}
uint32_t IntCode_STORE_F32(IntCodeState& ics, const IntCode* i) {
@@ -1502,6 +1510,7 @@ uint32_t IntCode_STORE_F32(IntCodeState& ics, const IntCode* i) {
address, ics.rf[i->src2_reg].f32, ics.rf[i->src2_reg].u32);
DFLUSH();
*((float*)(ics.membase + address)) = ics.rf[i->src2_reg].f32;
MarkPageDirty(ics, address);
return IA_NEXT;
}
uint32_t IntCode_STORE_F64(IntCodeState& ics, const IntCode* i) {
@@ -1510,6 +1519,7 @@ uint32_t IntCode_STORE_F64(IntCodeState& ics, const IntCode* i) {
address, ics.rf[i->src2_reg].f64, ics.rf[i->src2_reg].u64);
DFLUSH();
*((double*)(ics.membase + address)) = ics.rf[i->src2_reg].f64;
MarkPageDirty(ics, address);
return IA_NEXT;
}
uint32_t IntCode_STORE_V128(IntCodeState& ics, const IntCode* i) {
@@ -1520,6 +1530,7 @@ uint32_t IntCode_STORE_V128(IntCodeState& ics, const IntCode* i) {
VECI4(ics.rf[i->src2_reg].v128,0), VECI4(ics.rf[i->src2_reg].v128,1), VECI4(ics.rf[i->src2_reg].v128,2), VECI4(ics.rf[i->src2_reg].v128,3));
DFLUSH();
*((vec128_t*)(ics.membase + address)) = ics.rf[i->src2_reg].v128;
MarkPageDirty(ics, address);
return IA_NEXT;
}
int Translate_STORE(TranslationContext& ctx, Instr* i) {