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Detect MMIO writes via eieio

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Sajid
2024-11-24 15:36:50 +06:00
parent 4357a55eff
commit e5317bda48
3 changed files with 43 additions and 17 deletions
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39
PowerRecomp/recompiler.cpp
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@@ -158,6 +158,7 @@ bool Recompiler::Recompile(
const Function& fn,
uint32_t base,
const ppc_insn& insn,
const uint32_t* data,
std::unordered_map<uint32_t, RecompilerSwitchTable>::iterator& switchTable,
RecompilerLocalVariables& localVariables,
CSRState& csrState)
@@ -262,6 +263,12 @@ bool Recompiler::Recompile(
return "ea";
};
// TODO (Sajid): Check for out of bounds access
auto mmioStore = [&]() -> bool
{
return *(data + 1) == c_eieio;
};
auto printFunctionCall = [&](uint32_t address)
{
if (address == config.longJmpAddress)
@@ -1362,7 +1369,7 @@ bool Recompiler::Recompile(
break;
case PPC_INST_STB:
print("\tPPC_STORE_U8(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U8(" : "\tPPC_STORE_U8(");
if (insn.operands[2] != 0)
print("{}.u32 + ", r(insn.operands[2]));
println("{}, {}.u8);", int32_t(insn.operands[1]), r(insn.operands[0]));
@@ -1375,14 +1382,14 @@ bool Recompiler::Recompile(
break;
case PPC_INST_STBX:
print("\tPPC_STORE_U8(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U8(" : "\tPPC_STORE_U8(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, {}.u8);", r(insn.operands[2]), r(insn.operands[0]));
break;
case PPC_INST_STD:
print("\tPPC_STORE_U64(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U64(" : "\tPPC_STORE_U64(");
if (insn.operands[2] != 0)
print("{}.u32 + ", r(insn.operands[2]));
println("{}, {}.u64);", int32_t(insn.operands[1]), r(insn.operands[0]));
@@ -1405,7 +1412,7 @@ bool Recompiler::Recompile(
break;
case PPC_INST_STDX:
print("\tPPC_STORE_U64(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U64(" : "\tPPC_STORE_U64(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, {}.u64);", r(insn.operands[2]), r(insn.operands[0]));
@@ -1413,7 +1420,7 @@ bool Recompiler::Recompile(
case PPC_INST_STFD:
printSetFlushMode(false);
print("\tPPC_STORE_U64(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U64(" : "\tPPC_STORE_U64(");
if (insn.operands[2] != 0)
print("{}.u32 + ", r(insn.operands[2]));
println("{}, {}.u64);", int32_t(insn.operands[1]), f(insn.operands[0]));
@@ -1421,7 +1428,7 @@ bool Recompiler::Recompile(
case PPC_INST_STFDX:
printSetFlushMode(false);
print("\tPPC_STORE_U64(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U64(" : "\tPPC_STORE_U64(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, {}.u64);", r(insn.operands[2]), f(insn.operands[0]));
@@ -1429,7 +1436,7 @@ bool Recompiler::Recompile(
case PPC_INST_STFIWX:
printSetFlushMode(false);
print("\tPPC_STORE_U32(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U32(" : "\tPPC_STORE_U32(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, {}.u32);", r(insn.operands[2]), f(insn.operands[0]));
@@ -1438,7 +1445,7 @@ bool Recompiler::Recompile(
case PPC_INST_STFS:
printSetFlushMode(false);
println("\t{}.f32 = float({}.f64);", temp(), f(insn.operands[0]));
print("\tPPC_STORE_U32(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U32(" : "\tPPC_STORE_U32(");
if (insn.operands[2] != 0)
print("{}.u32 + ", r(insn.operands[2]));
println("{}, {}.u32);", int32_t(insn.operands[1]), temp());
@@ -1447,28 +1454,28 @@ bool Recompiler::Recompile(
case PPC_INST_STFSX:
printSetFlushMode(false);
println("\t{}.f32 = float({}.f64);", temp(), f(insn.operands[0]));
print("\tPPC_STORE_U32(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U32(" : "\tPPC_STORE_U32(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, {}.u32);", r(insn.operands[2]), temp());
break;
case PPC_INST_STH:
print("\tPPC_STORE_U16(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U16(" : "\tPPC_STORE_U16(");
if (insn.operands[2] != 0)
print("{}.u32 + ", r(insn.operands[2]));
println("{}, {}.u16);", int32_t(insn.operands[1]), r(insn.operands[0]));
break;
case PPC_INST_STHBRX:
print("\tPPC_STORE_U16(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U16(" : "\tPPC_STORE_U16(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, __builtin_bswap16({}.u16));", r(insn.operands[2]), r(insn.operands[0]));
break;
case PPC_INST_STHX:
print("\tPPC_STORE_U16(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U16(" : "\tPPC_STORE_U16(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, {}.u16);", r(insn.operands[2]), r(insn.operands[0]));
@@ -1530,14 +1537,14 @@ bool Recompiler::Recompile(
break;
case PPC_INST_STW:
print("\tPPC_STORE_U32(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U32(" : "\tPPC_STORE_U32(");
if (insn.operands[2] != 0)
print("{}.u32 + ", r(insn.operands[2]));
println("{}, {}.u32);", int32_t(insn.operands[1]), r(insn.operands[0]));
break;
case PPC_INST_STWBRX:
print("\tPPC_STORE_U32(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U32(" : "\tPPC_STORE_U32(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, __builtin_bswap32({}.u32));", r(insn.operands[2]), r(insn.operands[0]));
@@ -1566,7 +1573,7 @@ bool Recompiler::Recompile(
break;
case PPC_INST_STWX:
print("\tPPC_STORE_U32(");
print("{}", mmioStore() ? "\tPPC_MM_STORE_U32(" : "\tPPC_STORE_U32(");
if (insn.operands[1] != 0)
print("{}.u32 + ", r(insn.operands[1]));
println("{}.u32, {}.u32);", r(insn.operands[2]), r(insn.operands[0]));
@@ -2287,7 +2294,7 @@ bool Recompiler::Recompile(const Function& fn)
if (insn.opcode->id == PPC_INST_BCTR && (*(data - 1) == 0x07008038 || *(data - 1) == 0x00000060) && switchTable == config.switchTables.end())
std::println("Found a switch jump table at {:X} with no switch table entry present", base);
if (!Recompile(fn, base, insn, switchTable, localVariables, csrState))
if (!Recompile(fn, base, insn, data, switchTable, localVariables, csrState))
{
std::println("Unrecognized instruction at 0x{:X}: {}", base, insn.opcode->name);
allRecompiled = false;