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[Decompiler] Experimental Expression Stack (#157)

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* begin framework for expressions

* more

* clean up warnings

* small fixes

* update

* wip type prop improvements

* see if nasm works

* fix format strings
This commit is contained in:
water111
2020-12-17 15:48:07 -05:00
committed by GitHub
parent ba919a069c
commit cae3871730
38 changed files with 2064 additions and 631 deletions
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decompiler/Function/Function.cpp
+7 -7
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@@ -71,7 +71,7 @@ void Function::analyze_prologue(const LinkedObjectFile& file) {
if (instr.kind == InstructionKind::SW && instr.get_src(0).get_reg() == make_gpr(Reg::SP)) {
printf("[Warning] %s Suspected ASM function based on this instruction in prologue: %s\n",
guessed_name.to_string().c_str(), instr.to_string(file).c_str());
warnings += "Flagged as ASM function because of " + instr.to_string(file) + "\n";
warnings += ";; Flagged as ASM function because of " + instr.to_string(file) + "\n";
suspected_asm = true;
return;
}
@@ -94,7 +94,7 @@ void Function::analyze_prologue(const LinkedObjectFile& file) {
if (instr.kind == InstructionKind::SD && instr.get_src(0).get_reg() == make_gpr(Reg::S7)) {
spdlog::warn("{} Suspected ASM function based on this instruction in prologue: {}\n",
guessed_name.to_string(), instr.to_string(file));
warnings += "Flagged as ASM function because of " + instr.to_string(file) + "\n";
warnings += ";; Flagged as ASM function because of " + instr.to_string(file) + "\n";
suspected_asm = true;
return;
}
@@ -134,7 +134,7 @@ void Function::analyze_prologue(const LinkedObjectFile& file) {
"[Warning] %s Stack Zeroing Detected in Function::analyze_prologue, prologue may be "
"wrong\n",
guessed_name.to_string().c_str());
warnings += "Stack Zeroing Detected, prologue may be wrong\n";
warnings += ";; Stack Zeroing Detected, prologue may be wrong\n";
expect_nothing_after_gprs = true;
break;
}
@@ -146,7 +146,7 @@ void Function::analyze_prologue(const LinkedObjectFile& file) {
printf(
"[Warning] %s Suspected ASM function because register $a0 was stored on the stack!\n",
guessed_name.to_string().c_str());
warnings += "a0 on stack detected, flagging as asm\n";
warnings += ";; a0 on stack detected, flagging as asm\n";
return;
}
@@ -165,7 +165,7 @@ void Function::analyze_prologue(const LinkedObjectFile& file) {
printf("[Warning] %s Suspected asm function that isn't flagged due to stack store %s\n",
guessed_name.to_string().c_str(),
instructions.at(idx + i).to_string(file).c_str());
warnings += "Suspected asm function due to stack store: " +
warnings += ";; Suspected asm function due to stack store: " +
instructions.at(idx + i).to_string(file) + "\n";
return;
}
@@ -195,7 +195,7 @@ void Function::analyze_prologue(const LinkedObjectFile& file) {
printf("[Warning] %s Suspected asm function that isn't flagged due to stack store %s\n",
guessed_name.to_string().c_str(),
instructions.at(idx + i).to_string(file).c_str());
warnings += "Suspected asm function due to stack store: " +
warnings += ";; Suspected asm function due to stack store: " +
instructions.at(idx + i).to_string(file) + "\n";
return;
}
@@ -356,7 +356,7 @@ void Function::check_epilogue(const LinkedObjectFile& file) {
"[Warning] %s Double Return Epilogue Hack! This is probably an ASM function in "
"disguise\n",
guessed_name.to_string().c_str());
warnings += "Double Return Epilogue - this is probably an ASM function\n";
warnings += ";; Double Return Epilogue - this is probably an ASM function\n";
}
// delay slot should be daddiu sp, sp, offset
assert(is_gpr_2_imm_int(instructions.at(idx), InstructionKind::DADDIU, make_gpr(Reg::SP),