From bb1cb9f755ef77126bdfe3258c0f859bb6d2bf1a Mon Sep 17 00:00:00 2001
From: Oxore <oxore@protonmail.com>
Date: Wed, 7 Sep 2022 23:51:19 +0300
Subject: Hacky breakpoint before instruction executes

---
 emulator.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'emulator.cpp')

diff --git a/emulator.cpp b/emulator.cpp
index 5228231..051c6db 100644
--- a/emulator.cpp
+++ b/emulator.cpp
@@ -40,7 +40,8 @@ static int set_socket_reuseaddr(int socket_fd)
     return setsockopt(socket_fd, SOL_SOCKET, SO_REUSEADDR, (void*)&val, len);
 }
 
-static inline struct sockaddr_in sockaddr_in_any_ip_with_port(uint16_t port) {
+static inline struct sockaddr_in sockaddr_in_any_ip_with_port(uint16_t port)
+{
     struct sockaddr_in server{};
     server.sin_family = AF_INET;
     server.sin_addr.s_addr = INADDR_ANY;
@@ -207,7 +208,7 @@ static void make_hex(char* buff, unsigned int pc, unsigned int length)
 
 // TODO m68k_set_illg_instr_callback for true software breakpoint "4e4f"
 
-void m68k_instr_callback(int pc)
+int m68k_instr_callback(int pc)
 {
     const auto it = std::find_if(
             code_bkpts.begin(),
@@ -217,8 +218,8 @@ void m68k_instr_callback(int pc)
         g_m68k_debug.SetRunning(false);
         g_m68k_debug.RaiseBreakpoint();
         m68k_end_timeslice();
-        printf("Breakpoint!\n");
-        // TODO notify GDB somehow that breakpoint has been hit
+        printf("Breakpoint @ 0x%08x\n", pc);
+        return 1;
     }
     if (DEBUG_TRACE_INSTRUCTIONS) {
         char buff[100];
@@ -229,6 +230,7 @@ void m68k_instr_callback(int pc)
         printf("  %08X: %-20s: %s\n", pc, buff2, buff);
         fflush(stdout);
     }
+    return 0;
 }
 
 void ParseAndReact(
-- 
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