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Reduce system reserved space to 0x700000000 and map fixed on macOS.

This commit is contained in:
squidbus 2024-07-15 16:39:38 -07:00 committed by TheTurtle
parent f943ce2710
commit e2adbd75c3
3 changed files with 9 additions and 4 deletions
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2
CMakeLists.txt
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@ -559,7 +559,7 @@ target_link_libraries(shadps4 PRIVATE Boost::headers GPUOpen::VulkanMemoryAlloca
if (APPLE)
# Reserve system-managed memory space.
target_link_options(shadps4 PRIVATE -Wl,-no_pie,-no_fixup_chains,-no_huge,-pagezero_size,0x400000,-segaddr,SYSTEM_MANAGED,0x400000,-image_base,0x10000000000)
target_link_options(shadps4 PRIVATE -Wl,-no_pie,-no_fixup_chains,-no_huge,-pagezero_size,0x400000,-segaddr,GUEST_SYSTEM,0x400000,-image_base,0x10000000000)
# Link MoltenVK for Vulkan support
find_library(MOLTENVK MoltenVK REQUIRED)

6
src/core/address_space.cpp
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@ -16,8 +16,8 @@
#endif
#ifdef __APPLE__
// Reserve space for the system-managed address space using a zerofill section.
asm(".zerofill SYSTEM_MANAGED,SYSTEM_MANAGED,__system_managed,0x800000000");
// Reserve space for the system address space using a zerofill section.
asm(".zerofill GUEST_SYSTEM,GUEST_SYSTEM,__guest_system,0xEFFC00000");
#endif
namespace Core {
@ -295,7 +295,7 @@ struct AddressSpace::Impl {
// Cannot guarantee enough space for these areas at the desired addresses, so not MAP_FIXED.
system_reserved_base = reinterpret_cast<u8*>(
mmap(reinterpret_cast<void*>(SYSTEM_RESERVED_MIN), system_reserved_size,
protection_flags, base_map_flags, -1, 0));
protection_flags, base_map_flags | MAP_FIXED, -1, 0));
user_base = reinterpret_cast<u8*>(mmap(reinterpret_cast<void*>(USER_MIN), user_size,
protection_flags, base_map_flags, -1, 0));
#else

5
src/core/address_space.h
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@ -23,7 +23,12 @@ constexpr VAddr CODE_BASE_OFFSET = 0x100000000ULL;
constexpr VAddr SYSTEM_MANAGED_MIN = 0x00000400000ULL;
constexpr VAddr SYSTEM_MANAGED_MAX = 0x07FFFFBFFFULL;
constexpr VAddr SYSTEM_RESERVED_MIN = 0x800000000ULL;
#ifdef __APPLE__
// Can only comfortably reserve the first 0x700000000 of reserved space.
constexpr VAddr SYSTEM_RESERVED_MAX = 0xEFFFFFFFFULL;
#else
constexpr VAddr SYSTEM_RESERVED_MAX = 0xFFFFFFFFFULL;
#endif
constexpr VAddr USER_MIN = 0x1000000000ULL;
constexpr VAddr USER_MAX = 0xFBFFFFFFFFULL;