Impl read and write watchpoints

1 files changed, 9 insertions, 0 deletions

diff --git a/bus.cpp b/bus.cpp
index 444749c..9697c09 100644
--- a/bus.cpp
+++ b/bus.cpp
@@ -142,9 +142,13 @@ static inline bool memory_write(
 
 #define MASK_24(X) ((X) & (0xFF << 24))
 
+extern void m68k_read_callback(const uint32_t address, const uint32_t size);
+extern void m68k_write_callback(const uint32_t address, const uint32_t size);
+
 unsigned int m68k_read_memory_8(unsigned int address)
 {
     assert(MASK_24(address) == 0); // Just curious
+    m68k_read_callback(address, 4);
     const struct read_result ret = memory_read(BITNESS_8, address);
     if (!ret.successful)
         exit_error("Read error u8 @%08x", address);
@@ -153,6 +157,7 @@ unsigned int m68k_read_memory_8(unsigned int address)
 
 unsigned int m68k_read_memory_16(unsigned int address)
 {
+    m68k_read_callback(address, 2);
     assert(MASK_24(address) == 0); // Just curious
     const struct read_result ret = memory_read(BITNESS_16, address);
     if (!ret.successful)
@@ -162,6 +167,7 @@ unsigned int m68k_read_memory_16(unsigned int address)
 
 unsigned int m68k_read_memory_32(unsigned int address)
 {
+    m68k_read_callback(address, 1);
     assert(MASK_24(address) == 0); // Just curious
     const struct read_result ret = memory_read(BITNESS_32, address);
     if (!ret.successful)
@@ -190,6 +196,7 @@ unsigned int m68k_read_disassembler_32(unsigned int address)
 void m68k_write_memory_8(unsigned int address, unsigned int value)
 {
     assert(MASK_24(address) == 0); // Just curious
+    m68k_write_callback(address, 1);
     const bool successful = memory_write(BITNESS_8, address, value);
     if (!successful)
         exit_error("Attempted to write %02x (u8) to address %08x", value&0xff, address);
@@ -198,6 +205,7 @@ void m68k_write_memory_8(unsigned int address, unsigned int value)
 void m68k_write_memory_16(unsigned int address, unsigned int value)
 {
     assert(MASK_24(address) == 0); // Just curious
+    m68k_write_callback(address, 2);
     const bool successful = memory_write(BITNESS_16, address, value);
     if (!successful)
         exit_error("Attempted to write %04x (u16) to address %08x", value&0xffff, address);
@@ -206,6 +214,7 @@ void m68k_write_memory_16(unsigned int address, unsigned int value)
 void m68k_write_memory_32(unsigned int address, unsigned int value)
 {
     assert(MASK_24(address) == 0); // Just curious
+    m68k_write_callback(address, 4);
     const bool successful = memory_write(BITNESS_16, address, value);
     if (!successful)
         exit_error("Attempted to write %08x (u32) to address %08x", value, address);