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arm: Implement STRB reg/imm instructions.

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This commit is contained in:
bunnei 2016-08-04 19:50:01 -04:00
parent a5e2116e12
commit 9f77662b24
2 changed files with 17 additions and 4 deletions
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4
src/frontend/decoder/arm.h
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@ -201,8 +201,8 @@ boost::optional<const ArmMatcher<V>&> DecodeArm(u32 instruction) {
//INST(&V::arm_LDRT, "LDRT (A2)", "cccc0110u011nnnnttttvvvvvrr0mmmm"),
INST(&V::arm_STR_imm, "STR (imm)", "cccc010pu0w0nnnnddddvvvvvvvvvvvv"),
INST(&V::arm_STR_reg, "STR (reg)", "cccc011pu0w0nnnnddddvvvvvrr0mmmm"),
//INST(&V::arm_STRB_imm, "STRB (imm)", "cccc010pu1w0nnnnddddvvvvvvvvvvvv"),
//INST(&V::arm_STRB_reg, "STRB (reg)", "cccc011pu1w0nnnnddddvvvvvrr0mmmm"),
INST(&V::arm_STRB_imm, "STRB (imm)", "cccc010pu1w0nnnnddddvvvvvvvvvvvv"),
INST(&V::arm_STRB_reg, "STRB (reg)", "cccc011pu1w0nnnnddddvvvvvrr0mmmm"),
//INST(&V::arm_STRBT, "STRBT (A1)", "cccc0100u110nnnnttttvvvvvvvvvvvv"),
//INST(&V::arm_STRBT, "STRBT (A2)", "cccc0110u110nnnnttttvvvvvrr0mmmm"),
//INST(&V::arm_STRD_imm, "STRD (imm)", "cccc000pu1w0nnnnddddvvvv1111vvvv"), // v5E

17
src/frontend/translate/translate_arm/load_store.cpp
View file

@ -151,11 +151,24 @@ bool ArmTranslatorVisitor::arm_STR_reg(Cond cond, bool P, bool U, bool W, Reg n,
}
bool ArmTranslatorVisitor::arm_STRB_imm(Cond cond, bool P, bool U, bool W, Reg n, Reg d, Imm12 imm12) {
return InterpretThisInstruction();
if (ConditionPassed(cond)) {
const auto address = GetAddressingMode(ir, P, U, W, n, ir.Imm32(imm12));
const auto value = (d == Reg::PC) ? ir.Imm8(ir.PC() - 8) : ir.GetRegister(d);
ir.WriteMemory8(address, value);
}
return true;
}
bool ArmTranslatorVisitor::arm_STRB_reg(Cond cond, bool P, bool U, bool W, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction();
if (ConditionPassed(cond)) {
const auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
const auto address = GetAddressingMode(ir, P, U, W, n, shifted.result);
const auto value = (d == Reg::PC) ? ir.Imm8(ir.PC() - 8) : ir.GetRegister(d);
ir.WriteMemory8(address, value);
}
return true;
}
bool ArmTranslatorVisitor::arm_STRBT() {