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[JAEGER] Implement punbox Value -> {Type,Payload} conversion helpers.

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This commit is contained in:
Sean Stangl 2010-07-26 16:05:50 -07:00
parent 882f581f03
commit efe74a5af3
1 changed files with 18 additions and 16 deletions
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34
js/src/methodjit/PunboxAssembler.h
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@ -93,7 +93,6 @@ class Assembler : public BaseAssembler
return address;
}
/* TODO: Don't really need this..? */
void loadValue(Address address, RegisterID dst) {
loadPtr(address, dst);
}
@ -102,39 +101,42 @@ class Assembler : public BaseAssembler
loadPtr(address, dst);
}
void convertValueToType(RegisterID val) {
andPtr(Imm64(JSVAL_TAG_MASK), val);
}
void convertValueToPayload(RegisterID val) {
andPtr(Imm64(JSVAL_PAYLOAD_MASK), val);
}
void loadValueThenType(Address address, RegisterID val, RegisterID type) {
loadValue(valueOf(address), val);
if (val != type)
move(val, type);
andPtr(Imm64(JSVAL_TAG_MASK), type);
convertValueToType(type);
}
void loadValueThenType(BaseIndex address, RegisterID val, RegisterID type) {
loadValue(valueOf(address), val);
if (val != type)
move(val, type);
andPtr(Imm64(JSVAL_TAG_MASK), type);
convertValueToType(type);
}
void loadValueThenPayload(Address address, RegisterID val, RegisterID payload) {
loadValue(valueOf(address), val);
if (val != payload)
move(val, payload);
andPtr(Imm64(JSVAL_PAYLOAD_MASK), payload);
convertValueToPayload(payload);
}
void loadValueThenPayload(BaseIndex address, RegisterID val, RegisterID payload) {
loadValue(valueOf(address), val);
if (val != payload)
move(val, payload);
andPtr(Imm64(JSVAL_PAYLOAD_MASK), payload);
convertValueToPayload(payload);
}
/*
* TODO: All this gets to go.
* This needs to be part of the FrameState, since it will
* be performing register allocation.
*/
void loadTypeTag(Address address, RegisterID reg) {
loadValueThenType(valueOf(address), reg, reg);
}
@ -145,14 +147,14 @@ class Assembler : public BaseAssembler
void storeTypeTag(ImmShiftedTag imm, Address address) {
loadValue(valueOf(address), Registers::ValueReg);
andPtr(Imm64(JSVAL_PAYLOAD_MASK), Registers::ValueReg);
convertValueToPayload(Registers::ValueReg);
orPtr(imm, Registers::ValueReg);
storePtr(Registers::ValueReg, valueOf(address));
}
void storeTypeTag(ImmShiftedTag imm, BaseIndex address) {
loadValue(valueOf(address), Registers::ValueReg);
andPtr(Imm64(JSVAL_PAYLOAD_MASK), Registers::ValueReg);
convertValueToPayload(Registers::ValueReg);
orPtr(imm, Registers::ValueReg);
storePtr(Registers::ValueReg, valueOf(address));
}
@ -160,7 +162,7 @@ class Assembler : public BaseAssembler
void storeTypeTag(RegisterID reg, Address address) {
/* The type tag must be stored in shifted format. */
loadValue(valueOf(address), Registers::ValueReg);
andPtr(Imm64(JSVAL_PAYLOAD_MASK), Registers::ValueReg);
convertValueToPayload(Registers::ValueReg);
orPtr(reg, Registers::ValueReg);
storePtr(Registers::ValueReg, valueOf(address));
@ -169,7 +171,7 @@ class Assembler : public BaseAssembler
void storeTypeTag(RegisterID reg, BaseIndex address) {
/* The type tag must be stored in shifted format. */
loadValue(valueOf(address), Registers::ValueReg);
andPtr(Imm64(JSVAL_PAYLOAD_MASK), Registers::ValueReg);
convertValueToPayload(Registers::ValueReg);
orPtr(reg, Registers::ValueReg);
storePtr(Registers::ValueReg, valueOf(address));
}
@ -185,7 +187,7 @@ class Assembler : public BaseAssembler
void storePayload(RegisterID reg, Address address) {
/* Not for doubles. */
loadValue(valueOf(address), Registers::ValueReg);
andPtr(Imm64(JSVAL_TAG_MASK), Registers::ValueReg);
convertValueToType(Registers::ValueReg);
orPtr(reg, Registers::ValueReg);
storePtr(Registers::ValueReg, valueOf(address));
}
@ -193,7 +195,7 @@ class Assembler : public BaseAssembler
void storePayload(RegisterID reg, BaseIndex address) {
/* Not for doubles. */
loadValue(valueOf(address), Registers::ValueReg);
andPtr(Imm64(JSVAL_TAG_MASK), Registers::ValueReg);
convertValueToType(Registers::ValueReg);
orPtr(reg, Registers::ValueReg);
storePtr(Registers::ValueReg, valueOf(address));
}