From 74c27fd1b52d3456dfe745f8bb1387736302c466 Mon Sep 17 00:00:00 2001 From: bunnei Date: Sun, 19 Apr 2020 00:51:21 -0400 Subject: [PATCH] core: arm_unicorn: Fix interpret fallback by temporarily mapping instruction page. --- src/core/arm/unicorn/arm_unicorn.cpp | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/core/arm/unicorn/arm_unicorn.cpp b/src/core/arm/unicorn/arm_unicorn.cpp index d189efb63f..b965831232 100644 --- a/src/core/arm/unicorn/arm_unicorn.cpp +++ b/src/core/arm/unicorn/arm_unicorn.cpp @@ -11,6 +11,7 @@ #include "core/core_timing.h" #include "core/hle/kernel/scheduler.h" #include "core/hle/kernel/svc.h" +#include "core/memory.h" namespace Core { @@ -171,7 +172,17 @@ MICROPROFILE_DEFINE(ARM_Jit_Unicorn, "ARM JIT", "Unicorn", MP_RGB(255, 64, 64)); void ARM_Unicorn::ExecuteInstructions(std::size_t num_instructions) { MICROPROFILE_SCOPE(ARM_Jit_Unicorn); + + // Temporarily map the code page for Unicorn + u64 map_addr{GetPC() & ~Memory::PAGE_MASK}; + std::vector page_buffer(Memory::PAGE_SIZE); + system.Memory().ReadBlock(map_addr, page_buffer.data(), page_buffer.size()); + + CHECKED(uc_mem_map_ptr(uc, map_addr, page_buffer.size(), + UC_PROT_READ | UC_PROT_WRITE | UC_PROT_EXEC, page_buffer.data())); CHECKED(uc_emu_start(uc, GetPC(), 1ULL << 63, 0, num_instructions)); + CHECKED(uc_mem_unmap(uc, map_addr, page_buffer.size())); + system.CoreTiming().AddTicks(num_instructions); if (GDBStub::IsServerEnabled()) { if (last_bkpt_hit && last_bkpt.type == GDBStub::BreakpointType::Execute) {