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Fixup No.3 after #10779

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This commit is contained in:
Eladash 2021-09-01 22:52:50 +03:00 committed by Ivan
parent 1cbcf7e1ad
commit fafefb2cf5
6 changed files with 80 additions and 52 deletions
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22
Utilities/bin_patch.cpp
View File

@ -551,7 +551,6 @@ void patch_engine::append_title_patches(const std::string& title_id)
}
void ppu_register_range(u32 addr, u32 size);
void ppu_register_function_at(u32 addr, u32 size, u64 ptr);
bool ppu_form_branch_to_code(u32 entry, u32 target);
void unmap_vm_area(std::shared_ptr<vm::block_t>& ptr)
@ -581,24 +580,22 @@ static usz apply_modification(std::basic_string<u32>& applied, const patch_engin
// Allocate map if needed, if allocated flags will indicate that bit 62 is set (unique identifier)
auto alloc_map = vm::reserve_map(vm::any, alloc_at & -0x10000, utils::align(alloc_size, 0x10000), vm::page_size_64k | vm::preallocated | (1ull << 62));
u64 flags = vm::page_readable;
u64 flags = vm::alloc_unwritable;
switch (p.offset % patch_engine::mem_protection::mask)
{
case patch_engine::mem_protection::wx: flags |= vm::page_writable + vm::page_executable; break;
case patch_engine::mem_protection::wx: flags = vm::alloc_executable; break;
case patch_engine::mem_protection::ro: break;
case patch_engine::mem_protection::rx: flags |= vm::page_executable; break;
case patch_engine::mem_protection::rw: flags |= vm::page_writable; break;
case patch_engine::mem_protection::rx: flags |= vm::alloc_executable; break;
case patch_engine::mem_protection::rw: flags &= ~vm::alloc_unwritable; break;
default: ensure(false);
}
if (alloc_map)
{
if ((p.alloc_addr = alloc_map->falloc(alloc_at, alloc_size)))
if ((p.alloc_addr = alloc_map->falloc(alloc_at, alloc_size, nullptr, flags)))
{
vm::page_protect(alloc_at, alloc_size, 0, flags, flags ^ (vm::page_writable + vm::page_readable + vm::page_executable));
if (flags & vm::page_executable)
if (flags & vm::alloc_executable)
{
ppu_register_range(alloc_at, alloc_size);
}
@ -681,7 +678,7 @@ static usz apply_modification(std::basic_string<u32>& applied, const patch_engin
const u32 out_branch = vm::try_get_addr(dst + (offset & -4)).first;
// Allow only if points to a PPU executable instruction
if (out_branch < 0x10000 || out_branch >= 0x4000'0000 || !vm::check_addr<4>(out_branch, vm::page_executable))
if (out_branch < 0x10000 || out_branch >= 0x4000'0000 || !vm::check_addr<4>(out_branch, vm::alloc_executable))
{
continue;
}
@ -689,14 +686,14 @@ static usz apply_modification(std::basic_string<u32>& applied, const patch_engin
const u32 alloc_size = utils::align(static_cast<u32>(p.value.long_value + 1) * 4, 0x10000);
// Always executable
u64 flags = vm::page_executable | vm::page_readable;
u64 flags = vm::alloc_executable | vm::alloc_unwritable;
switch (p.offset % patch_engine::mem_protection::mask)
{
case patch_engine::mem_protection::rw:
case patch_engine::mem_protection::wx:
{
flags |= vm::page_writable;
flags &= ~vm::alloc_unwritable;
break;
}
case patch_engine::mem_protection::ro:
@ -726,7 +723,6 @@ static usz apply_modification(std::basic_string<u32>& applied, const patch_engin
// Register code
ppu_register_range(addr, alloc_size);
ppu_register_function_at(addr, static_cast<u32>(p.value.long_value), 0);
// Write branch to code
ppu_form_branch_to_code(out_branch, addr);

2
rpcs3/Emu/Cell/PPUAnalyser.cpp
View File

@ -1203,7 +1203,7 @@ void ppu_module::analyse(u32 lib_toc, u32 entry, const u32 sec_end, const std::b
if (ppu_get_far_jump(iaddr))
{
block.second = _ptr.addr() - block.first;
block.second = _ptr.addr() - block.first - 4;
break;
}

3
rpcs3/Emu/Cell/PPUThread.cpp
View File

@ -521,7 +521,7 @@ bool ppu_form_branch_to_code(u32 entry, u32 target)
entry &= -4;
target &= -4;
if (entry == target || vm::check_addr(entry, vm::page_executable) || !vm::check_addr(target, vm::page_executable))
if (entry == target || !vm::check_addr(entry, vm::page_executable) || !vm::check_addr(target, vm::page_executable))
{
return false;
}
@ -533,6 +533,7 @@ bool ppu_form_branch_to_code(u32 entry, u32 target)
std::lock_guard lock(jumps.mutex);
jumps.vals.insert_or_assign(entry, target);
ppu_register_function_at(entry, 4, &ppu_far_jump);
return true;
}

6
rpcs3/Emu/Cell/SPUThread.cpp
View File

@ -1710,12 +1710,12 @@ spu_thread::spu_thread(lv2_spu_group* group, u32 index, std::string_view name, u
{
if (!group)
{
ensure(vm::get(vm::spu)->falloc(vm_offset(), SPU_LS_SIZE, &shm, 0x200));
ensure(vm::get(vm::spu)->falloc(vm_offset(), SPU_LS_SIZE, &shm, vm::page_size_64k));
}
else
{
// 0x1000 indicates falloc to allocate page with no access rights in base memory
ensure(vm::get(vm::spu)->falloc(vm_offset(), SPU_LS_SIZE, &shm, 0x1200));
// alloc_hidden indicates falloc to allocate page with no access rights in base memory
ensure(vm::get(vm::spu)->falloc(vm_offset(), SPU_LS_SIZE, &shm, vm::page_size_64k | vm::alloc_hidden));
}
// Try to guess free area

83
rpcs3/Emu/Memory/vm.cpp
View File

@ -1050,7 +1050,7 @@ namespace vm
// Mapped regions: addr -> shm handle
constexpr auto block_map = &auto_typemap<block_t>::get<std::map<u32, std::pair<u32, std::shared_ptr<utils::shm>>>>;
bool block_t::try_alloc(u32 addr, u8 flags, u32 size, std::shared_ptr<utils::shm>&& shm) const
bool block_t::try_alloc(u32 addr, u64 bflags, u32 size, std::shared_ptr<utils::shm>&& shm) const
{
// Check if memory area is already mapped
for (u32 i = addr / 4096; i <= (addr + size - 1) / 4096; i++)
@ -1064,6 +1064,34 @@ namespace vm
const u32 page_addr = addr + (this->flags & stack_guarded ? 0x1000 : 0);
const u32 page_size = size - (this->flags & stack_guarded ? 0x2000 : 0);
// No flags are default to readable/writable
// Explicit (un...) flags are used to protect from such access
u8 flags = 0;
if (~bflags & alloc_hidden)
{
flags |= page_readable;
if (~bflags & alloc_unwritable)
{
flags |= page_writable;
}
}
if (bflags & alloc_executable)
{
flags |= page_executable;
}
if ((flags & page_size_mask) == page_size_64k)
{
flags |= page_64k_size;
}
else if (!(flags & (page_size_mask & ~page_size_1m)))
{
flags |= page_1m_size;
}
if (this->flags & stack_guarded)
{
// Mark overflow/underflow guard pages as allocated
@ -1122,12 +1150,31 @@ namespace vm
return true;
}
static constexpr u64 process_block_flags(u64 flags)
{
if ((flags & page_size_mask) == 0)
{
flags |= page_size_1m;
}
if (flags & page_size_4k)
{
flags |= preallocated;
}
else
{
flags &= ~stack_guarded;
}
return flags;
}
block_t::block_t(u32 addr, u32 size, u64 flags)
: addr(addr)
, size(size)
, flags(flags)
, flags(process_block_flags(flags))
{
if (flags & page_size_4k || flags & preallocated)
if (this->flags & preallocated)
{
// Special path for whole-allocated areas allowing 4k granularity
m_common = std::make_shared<utils::shm>(size);
@ -1166,7 +1213,7 @@ namespace vm
if (!src)
{
// Use the block's flags (excpet for protection)
flags = (this->flags & ~page_prot_mask) | (flags & page_prot_mask);
flags = (this->flags & ~alloc_prot_mask) | (flags & alloc_prot_mask);
}
// Determine minimal alignment
@ -1187,17 +1234,6 @@ namespace vm
return 0;
}
u8 pflags = flags & page_hidden ? 0 : (~flags & (page_readable | page_writable));
if ((flags & page_size_64k) == page_size_64k)
{
pflags |= page_64k_size;
}
else if (!(flags & (page_size_mask & ~page_size_1m)))
{
pflags |= page_1m_size;
}
// Create or import shared memory object
std::shared_ptr<utils::shm> shm;
@ -1224,7 +1260,7 @@ namespace vm
// Search for an appropriate place (unoptimized)
for (;; addr += align)
{
if (try_alloc(addr, pflags, size, std::move(shm)))
if (try_alloc(addr, flags, size, std::move(shm)))
{
return addr + (flags & stack_guarded ? 0x1000 : 0);
}
@ -1243,7 +1279,7 @@ namespace vm
if (!src)
{
// Use the block's flags (excpet for protection)
flags = (this->flags & ~page_prot_mask) | (flags & page_prot_mask);
flags = (this->flags & ~alloc_prot_mask) | (flags & alloc_prot_mask);
}
// Determine minimal alignment
@ -1271,17 +1307,6 @@ namespace vm
// Force aligned address
addr -= addr % min_page_size;
u8 pflags = flags & page_hidden ? 0 : (~flags & (page_readable | page_writable));
if ((flags & page_size_64k) == page_size_64k)
{
pflags |= page_64k_size;
}
else if (!(flags & (page_size_mask & ~page_size_1m)))
{
pflags |= page_1m_size;
}
// Create or import shared memory object
std::shared_ptr<utils::shm> shm;
@ -1296,7 +1321,7 @@ namespace vm
vm::writer_lock lock(0);
if (!try_alloc(addr, pflags, size, std::move(shm)))
if (!try_alloc(addr, flags, size, std::move(shm)))
{
return 0;
}

16
rpcs3/Emu/Memory/vm.h
View File

@ -43,8 +43,7 @@ namespace vm
page_readable = (1 << 0),
page_writable = (1 << 1),
page_executable = (1 << 2),
page_prot_mask = page_readable | page_writable | page_executable,
page_fault_notification = (1 << 3),
page_no_reservations = (1 << 4),
page_64k_size = (1 << 5),
@ -93,8 +92,6 @@ namespace vm
enum block_flags_3
{
page_hidden = 0x1000,
page_size_4k = 0x100, // SYS_MEMORY_PAGE_SIZE_4K
page_size_64k = 0x200, // SYS_MEMORY_PAGE_SIZE_64K
page_size_1m = 0x400, // SYS_MEMORY_PAGE_SIZE_1M
@ -109,6 +106,15 @@ namespace vm
bf0_mask = bf0_0x1 | bf0_0x2,
};
enum alloc_flags
{
alloc_hidden = 0x1000,
alloc_unwritable = 0x2000,
alloc_executable = 0x4000,
alloc_prot_mask = alloc_hidden | alloc_unwritable | alloc_executable,
};
// Object that handles memory allocations inside specific constant bounds ("location")
class block_t final
{
@ -117,7 +123,7 @@ namespace vm
// Common mapped region for special cases
std::shared_ptr<utils::shm> m_common;
bool try_alloc(u32 addr, u8 flags, u32 size, std::shared_ptr<utils::shm>&&) const;
bool try_alloc(u32 addr, u64 bflags, u32 size, std::shared_ptr<utils::shm>&&) const;
public:
block_t(u32 addr, u32 size, u64 flags);