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SPU LLVM: implement get_segment_base()

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Fake function used to compute 32-bit offset of local functions.
This commit is contained in:
Nekotekina 2020-05-27 18:53:09 +03:00
parent abf9a08ee3
commit 8e9d2fa70e
1 changed files with 15 additions and 7 deletions
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12
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -8093,7 +8093,7 @@ public:
// Clear stack mirror and return by tail call to the provided return address
m_ir->CreateStore(splat<u64[2]>(-1).eval(m_ir), m_ir->CreateBitCast(m_ir->CreateGEP(m_thread, stack0.value), get_type<u64(*)[2]>()));
const auto targ = m_ir->CreateAdd(m_ir->CreateLShr(_ret, 32), m_ir->getInt64(reinterpret_cast<u64>(jit_runtime::alloc(0, 0))));
const auto targ = m_ir->CreateAdd(m_ir->CreateLShr(_ret, 32), get_segment_base());
tail_chunk(m_ir->CreateIntToPtr(targ, m_finfo->chunk->getFunctionType()->getPointerTo()), m_ir->CreateTrunc(m_ir->CreateLShr(link, 32), get_type<u32>()));
m_ir->SetInsertPoint(fail);
}
@ -8458,7 +8458,7 @@ public:
const auto pfunc = add_function(m_pos + 4);
const auto stack0 = eval(zext<u64>(extract(get_reg_fixed(1), 3) & 0x3fff0) + ::offset32(&spu_thread::stack_mirror));
const auto stack1 = eval(stack0 + 8);
const auto rel_ptr = m_ir->CreateSub(m_ir->CreatePtrToInt(pfunc->chunk, get_type<u64>()), m_ir->getInt64(reinterpret_cast<u64>(jit_runtime::alloc(0, 0))));
const auto rel_ptr = m_ir->CreateSub(m_ir->CreatePtrToInt(pfunc->chunk, get_type<u64>()), get_segment_base());
const auto ptr_plus_op = m_ir->CreateOr(m_ir->CreateShl(rel_ptr, 32), m_ir->getInt64(m_next_op));
const auto base_plus_pc = m_ir->CreateOr(m_ir->CreateShl(m_ir->CreateZExt(m_base_pc, get_type<u64>()), 32), m_ir->getInt64(m_pos + 4));
m_ir->CreateStore(ptr_plus_op, m_ir->CreateBitCast(m_ir->CreateGEP(m_thread, stack0.value), get_type<u64*>()));
@ -8466,6 +8466,14 @@ public:
}
}
llvm::Value* get_segment_base()
{
const auto type = llvm::FunctionType::get(get_type<void>(), {}, false);
const auto func = llvm::cast<llvm::Function>(m_module->getOrInsertFunction("spu_segment_base", type).getCallee());
m_engine->updateGlobalMapping("spu_segment_base", reinterpret_cast<u64>(jit_runtime::alloc(0, 0)));
return m_ir->CreatePtrToInt(func, get_type<u64>());
}
static decltype(&spu_llvm_recompiler::UNK) decode(u32 op);
};