From 16784e5bb3dd043f9430401097a4be42ad21eb91 Mon Sep 17 00:00:00 2001 From: merry Date: Sun, 27 Feb 2022 19:40:05 +0000 Subject: dynarmic: Inline exclusive memory accesses Inlines implementation of exclusive instructions into JITted code, improving performance of applications relying heavily on these instructions. We also fastmem these instructions for additional speed, with support for appropriate recompilation on fastmem failure. An unsafe optimization to disable the intercore global_monitor is also provided, should one wish to rely solely on cmpxchg semantics for safety. See also: merryhime/dynarmic#664 --- src/core/arm/dynarmic/arm_dynarmic_64.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'src/core/arm/dynarmic/arm_dynarmic_64.cpp') diff --git a/src/core/arm/dynarmic/arm_dynarmic_64.cpp b/src/core/arm/dynarmic/arm_dynarmic_64.cpp index 56836bd05..d96226c41 100644 --- a/src/core/arm/dynarmic/arm_dynarmic_64.cpp +++ b/src/core/arm/dynarmic/arm_dynarmic_64.cpp @@ -185,6 +185,9 @@ std::shared_ptr ARM_Dynarmic_64::MakeJit(Common::PageTable* config.fastmem_pointer = page_table->fastmem_arena; config.fastmem_address_space_bits = address_space_bits; config.silently_mirror_fastmem = false; + + config.fastmem_exclusive_access = true; + config.recompile_on_exclusive_fastmem_failure = true; } // Multi-process state @@ -237,6 +240,12 @@ std::shared_ptr ARM_Dynarmic_64::MakeJit(Common::PageTable* if (!Settings::values.cpuopt_fastmem) { config.fastmem_pointer = nullptr; } + if (!Settings::values.cpuopt_fastmem_exclusives) { + config.fastmem_exclusive_access = false; + } + if (!Settings::values.cpuopt_recompile_exclusives) { + config.recompile_on_exclusive_fastmem_failure = false; + } } // Unsafe optimizations @@ -254,6 +263,9 @@ std::shared_ptr ARM_Dynarmic_64::MakeJit(Common::PageTable* if (Settings::values.cpuopt_unsafe_fastmem_check) { config.fastmem_address_space_bits = 64; } + if (Settings::values.cpuopt_unsafe_ignore_global_monitor) { + config.optimizations |= Dynarmic::OptimizationFlag::Unsafe_IgnoreGlobalMonitor; + } } // Curated optimizations @@ -262,6 +274,7 @@ std::shared_ptr ARM_Dynarmic_64::MakeJit(Common::PageTable* config.optimizations |= Dynarmic::OptimizationFlag::Unsafe_UnfuseFMA; config.optimizations |= Dynarmic::OptimizationFlag::Unsafe_InaccurateNaN; config.fastmem_address_space_bits = 64; + config.optimizations |= Dynarmic::OptimizationFlag::Unsafe_IgnoreGlobalMonitor; } return std::make_shared(config); -- cgit v1.2.3