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PPU Analyzer: Opt-out suspected floats from instruction stream

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This commit is contained in:
Elad 2025-02-07 17:23:51 +02:00
parent 54f7b3dfb2
commit c497136431
1 changed files with 26 additions and 0 deletions
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26
rpcs3/Emu/Cell/PPUAnalyser.cpp
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@ -2161,6 +2161,32 @@ bool ppu_module<lv2_obj>::analyse(u32 lib_toc, u32 entry, const u32 sec_end, con
break;
}
if (is_good)
{
// Special opting-out: range of "instructions" is likely to be embedded floats
// Test this by testing if the lower 23 bits are 0
vm::cptr<u32> _ptr = vm::cast(exp);
auto ptr = get_ptr<const u32>(_ptr);
bool ok = false;
for (u32 it = exp; it < std::min(i_pos + 4, lim); it += 4, advance(_ptr, ptr, 1))
{
const u32 value_of_supposed_opcode = *ptr;
if (value_of_supposed_opcode == ppu_instructions::NOP() || (value_of_supposed_opcode << (32 - 23)))
{
ok = true;
break;
}
}
if (!ok)
{
is_good = false;
}
}
if (i_pos < lim)
{
i_pos += 4;