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vm: add "hook" memory (32G)

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Implement overcommit emulation for shm.
This commit is contained in:
Nekotekina 2021-04-30 17:28:48 +03:00
parent e327d47169
commit 1b0b2fe21e
3 changed files with 48 additions and 8 deletions
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23
rpcs3/Emu/Memory/vm.cpp
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@ -44,8 +44,11 @@ namespace vm
// Auxiliary virtual memory for executable areas
u8* const g_exec_addr = memory_reserve_4GiB(g_sudo_addr, 0x200000000);
// Hooks for memory R/W interception (default: zero offset to some function with only ret instructions)
u8* const g_hook_addr = memory_reserve_4GiB(g_exec_addr, 0x800000000);
// Stats for debugging
u8* const g_stat_addr = memory_reserve_4GiB(g_exec_addr);
u8* const g_stat_addr = memory_reserve_4GiB(g_hook_addr);
// For SPU
u8* const g_free_addr = g_stat_addr + 0x1'0000'0000;
@ -1125,7 +1128,7 @@ namespace vm
if (flags & page_size_4k || flags & preallocated)
{
// Special path for whole-allocated areas allowing 4k granularity
m_common = std::make_shared<utils::shm>(size);
m_common = std::make_shared<utils::shm>(size, fs::get_cache_dir() + std::to_string(utils::get_unique_tsc()));
m_common->map_critical(vm::base(addr), utils::protection::no);
m_common->map_critical(vm::get_super_ptr(addr));
lock_sudo(addr, size);
@ -1630,17 +1633,21 @@ namespace vm
inline namespace ps3_
{
static utils::shm s_hook{0x800000000, fs::get_cache_dir() + "hook.dat"};
void init()
{
vm_log.notice("Guest memory bases address ranges:\n"
"vm::g_base_addr = %p - %p\n"
"vm::g_sudo_addr = %p - %p\n"
"vm::g_exec_addr = %p - %p\n"
"vm::g_hook_addr = %p - %p\n"
"vm::g_stat_addr = %p - %p\n"
"vm::g_reservations = %p - %p\n",
g_base_addr, g_base_addr + UINT32_MAX,
g_sudo_addr, g_sudo_addr + UINT32_MAX,
g_exec_addr, g_exec_addr + 0x200000000 - 1,
g_hook_addr, g_hook_addr + 0x800000000 - 1,
g_stat_addr, g_stat_addr + UINT32_MAX,
g_reservations, g_reservations + sizeof(g_reservations) - 1);
@ -1661,6 +1668,11 @@ namespace vm
std::memset(g_shmem, 0, sizeof(g_shmem));
std::memset(g_range_lock_set, 0, sizeof(g_range_lock_set));
g_range_lock_bits = 0;
#ifdef _WIN32
utils::memory_release(g_hook_addr, 0x800000000);
#endif
ensure(s_hook.map(g_hook_addr, utils::protection::rw, true));
}
}
@ -1672,6 +1684,13 @@ namespace vm
utils::memory_decommit(g_exec_addr, 0x200000000);
utils::memory_decommit(g_stat_addr, 0x100000000);
#ifdef _WIN32
s_hook.unmap(g_hook_addr);
ensure(utils::memory_reserve(0x800000000, g_hook_addr));
#else
utils::memory_decommit(g_hook_addr, 0x800000000);
#endif
std::memset(g_range_lock_set, 0, sizeof(g_range_lock_set));
g_range_lock_bits = 0;
}