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Implement more instructions

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SXTB, SXTH, SXTAB, SXTAH, UXTB, UXTH, UXTAB, UXTAH, REV16
This commit is contained in:
Tillmann Karras 2016-08-02 10:16:30 +01:00
parent 30a90295b9
commit fc33f1d374
5 changed files with 170 additions and 38 deletions
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69
src/frontend/disassembler/disassembler_arm.cpp
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@ -66,6 +66,21 @@ public:
return "<internal error>";
}
std::string RorStr(Reg m, SignExtendRotation rotate) {
switch (rotate) {
case SignExtendRotation::ROR_0:
return RegToString(m);
case SignExtendRotation::ROR_8:
return Common::StringFromFormat("%s, ror #8", RegToString(m));
case SignExtendRotation::ROR_16:
return Common::StringFromFormat("%s, ror #16", RegToString(m));
case SignExtendRotation::ROR_24:
return Common::StringFromFormat("%s, ror #24", RegToString(m));
}
assert(false);
return "<internal error>";
}
// Branch instructions
std::string arm_B(Cond cond, Imm24 imm24) {
s32 offset = Common::SignExtend<26, s32>(imm24 << 2) + 8;
@ -245,7 +260,9 @@ public:
}
// Exception generation instructions
std::string arm_BKPT(Cond cond, Imm12 imm12, Imm4 imm4) { return "ice"; }
std::string arm_BKPT(Cond cond, Imm12 imm12, Imm4 imm4) {
return Common::StringFromFormat("bkpt #%hu", imm12 << 4 | imm4);
}
std::string arm_SVC(Cond cond, Imm24 imm24) {
return Common::StringFromFormat("svc%s #%u", CondToString(cond), imm24);
}
@ -254,18 +271,42 @@ public:
}
// Extension functions
std::string arm_SXTAB(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_SXTAB16(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_SXTAH(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_SXTB(Cond cond, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_SXTB16(Cond cond, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_SXTH(Cond cond, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_UXTAB(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_UXTAB16(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_UXTAH(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_UXTB(Cond cond, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_UXTB16(Cond cond, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_UXTH(Cond cond, Reg d, SignExtendRotation rotate, Reg m) { return "ice"; }
std::string arm_SXTAB(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("sxtab%s %s, %s, %s", CondToString(cond), RegToString(d), RegToString(n), RorStr(m, rotate).c_str());
}
std::string arm_SXTAB16(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("sxtab16%s %s, %s, %s", CondToString(cond), RegToString(d), RegToString(n), RorStr(m, rotate).c_str());
}
std::string arm_SXTAH(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("sxtah%s %s, %s, %s", CondToString(cond), RegToString(d), RegToString(n), RorStr(m, rotate).c_str());
}
std::string arm_SXTB(Cond cond, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("sxtb%s %s, %s", CondToString(cond), RegToString(d), RorStr(m, rotate).c_str());
}
std::string arm_SXTB16(Cond cond, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("sxtb16%s %s, %s", CondToString(cond), RegToString(d), RorStr(m, rotate).c_str());
}
std::string arm_SXTH(Cond cond, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("sxth%s %s, %s", CondToString(cond), RegToString(d), RorStr(m, rotate).c_str());
}
std::string arm_UXTAB(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("uxtab%s %s, %s, %s", CondToString(cond), RegToString(d), RegToString(n), RorStr(m, rotate).c_str());
}
std::string arm_UXTAB16(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("uxtab16%s %s, %s, %s", CondToString(cond), RegToString(d), RegToString(n), RorStr(m, rotate).c_str());
}
std::string arm_UXTAH(Cond cond, Reg n, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("uxtah%s %s, %s, %s", CondToString(cond), RegToString(d), RegToString(n), RorStr(m, rotate).c_str());
}
std::string arm_UXTB(Cond cond, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("uxtb%s %s, %s", CondToString(cond), RegToString(d), RorStr(m, rotate).c_str());
}
std::string arm_UXTB16(Cond cond, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("uxtb16%s %s, %s", CondToString(cond), RegToString(d), RorStr(m, rotate).c_str());
}
std::string arm_UXTH(Cond cond, Reg d, SignExtendRotation rotate, Reg m) {
return Common::StringFromFormat("uxth%s %s, %s", CondToString(cond), RegToString(d), RorStr(m, rotate).c_str());
}
// Hint instructions
std::string arm_PLD() { return "<unimplemented>"; }
@ -313,7 +354,7 @@ public:
// Miscellaneous instructions
std::string arm_CLZ(Cond cond, Reg d, Reg m) { return "ice"; }
std::string arm_NOP() { return "ice"; }
std::string arm_NOP() { return "nop"; }
std::string arm_SEL(Cond cond, Reg n, Reg d, Reg m) { return "ice"; }
// Unsigned sum of absolute difference functions