Fix invalid CPU halt without HALT command

HyperCPU emulator runs the executable code until HALT command is sent.
If the end of the code is reached, and there is no HALT command,
emulator will continue reading and executing the code and finally abort
with error like "Interrupt was triggered, but failed to execute handler"
with XIP exceeding the size of the executable code (binary size).

This commit implements automatic CPU halt in case XIP exceeds the binary size.

Signed-off-by: Ivan Movchan <ivan.movchan.07@gmail.com>

Author: ivan-movchan

src/Emulator/Core/CPU/CPU.cpp

@@ -10,6 +10,7 @@ HyperCPU::CPU::CPU(std::uint16_t core_count, std::uint64_t mem_size, char* binar
     : mem_controller(dynamic_cast<IMemoryController*>(new MemoryControllerST(mem_size, this))),
       core_count(core_count),
       total_mem(mem_size),
+      binary_size(binary_size),
       halted(false),
       ivt_initialized(false),
       io_ctl(std::make_unique<SimpleIOImpl>()) {
@@ -251,6 +252,11 @@ void HyperCPU::CPU::Run() {
       pending_interrupt.reset();
       continue;
     }
+    
+    if ((*xip) >= binary_size) {
+      halted = true;
+      break;
+    }
 
     buffer = m_decoder->FetchAndDecode();
 

src/Emulator/Core/CPU/CPU.hpp

@@ -29,6 +29,7 @@ namespace HyperCPU {
     // Data
     std::uint16_t core_count;
     std::uint64_t total_mem;
+    std::uint64_t binary_size;
     bool halted;
 
     // General space for registers