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Code Issues Releases Activity

core: arm_unicorn: Fix interpret fallback by temporarily mapping instruction page.

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bunnei 2020-04-19 00:51:21 -04:00
parent 4d7d3651f3
commit 74c27fd1b5
1 changed files with 11 additions and 0 deletions
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11
src/core/arm/unicorn/arm_unicorn.cpp
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@ -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<u8> 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) {