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Patches/PPU: Extend and improve patching capabilities (code allocations, jumps to any address) (#10779)

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* Patches/PPU: Implement dynamic code allocation + Any-Address jump patches

Also fix deallocation path of fixed allocation patches.
This commit is contained in:
Eladash 2021-09-01 13:38:17 +03:00 • committed by GitHub
parent ee6e4c493d
commit b40ed5bdb7
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GPG key ID: 4AEE18F83AFDEB23
8 changed files with 339 additions and 72 deletions
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24
rpcs3/Emu/Cell/PPUAnalyser.cpp
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@ -37,6 +37,8 @@ void fmt_class_string<bs_t<ppu_attr>>::format(std::string& out, u64 arg)
format_bitset(out, arg, "[", ",", "]", &fmt_class_string<ppu_attr>::format);
}
u32 ppu_get_far_jump(u32 pc);
void ppu_module::validate(u32 reloc)
{
// Load custom PRX configuration if available
@ -1199,6 +1201,12 @@ void ppu_module::analyse(u32 lib_toc, u32 entry, const u32 sec_end, const std::b
const ppu_opcode_t op{*_ptr++};
const ppu_itype::type type = s_ppu_itype.decode(op.opcode);
if (ppu_get_far_jump(iaddr))
{
block.second = _ptr.addr() - block.first;
break;
}
if (type == ppu_itype::UNK)
{
// Invalid blocks will remain empty
@ -1388,6 +1396,11 @@ void ppu_module::analyse(u32 lib_toc, u32 entry, const u32 sec_end, const std::b
const ppu_opcode_t op{*_ptr++};
const ppu_itype::type type = s_ppu_itype.decode(op.opcode);
if (ppu_get_far_jump(iaddr))
{
break;
}
if (type == ppu_itype::B || type == ppu_itype::BC)
{
const u32 target = (op.aa ? 0 : iaddr) + (type == ppu_itype::B ? +op.bt24 : +op.bt14);
@ -1462,7 +1475,11 @@ void ppu_module::analyse(u32 lib_toc, u32 entry, const u32 sec_end, const std::b
const ppu_opcode_t op{*_ptr++};
const ppu_itype::type type = s_ppu_itype.decode(op.opcode);
if (type == ppu_itype::UNK)
if (ppu_get_far_jump(addr))
{
_ptr.set(next);
}
else if (type == ppu_itype::UNK)
{
break;
}
@ -1674,6 +1691,11 @@ void ppu_module::analyse(u32 lib_toc, u32 entry, const u32 sec_end, const std::b
for (; i_pos < lim; i_pos += 4)
{
if (ppu_get_far_jump(i_pos))
{
continue;
}
const u32 opc = vm::_ref<u32>(i_pos);
switch (auto type = s_ppu_itype.decode(opc))