Mercurial > repos > blastem

comparison segacd.c @ 2104:ff32a90260c9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial support for using debugger on sub CPU
author Michael Pavone <pavone@retrodev.com>
date Fri, 11 Feb 2022 23:21:10 -0800
parents b92c998c6742
children d2989e32c026
comparison
equal deleted inserted replaced
2103:522d04e2adcd 2104:ff32a90260c9
1 #include <stdlib.h> 1 #include <stdlib.h>
2 #include <string.h> 2 #include <string.h>
3 #include "cd_graphics.h" 3 #include "cd_graphics.h"
4 #include "genesis.h" 4 #include "genesis.h"
5 #include "util.h" 5 #include "util.h"
6 #include "debug.h"
7 #include "gdb_remote.h"
6 8
7 #define SCD_MCLKS 50000000 9 #define SCD_MCLKS 50000000
8 #define SCD_PERIPH_RESET_CLKS (SCD_MCLKS / 10) 10 #define SCD_PERIPH_RESET_CLKS (SCD_MCLKS / 10)
9 #define TIMER_TICK_CLKS 1536 11 #define TIMER_TICK_CLKS 1536
10 12
873 875
874 static m68k_context *sync_components(m68k_context * context, uint32_t address) 876 static m68k_context *sync_components(m68k_context * context, uint32_t address)
875 { 877 {
876 segacd_context *cd = context->system; 878 segacd_context *cd = context->system;
877 scd_peripherals_run(cd, context->current_cycle); 879 scd_peripherals_run(cd, context->current_cycle);
878 if (context->int_ack) { 880 if (address && cd->enter_debugger) {
879 printf("int ack %d\n", context->int_ack); 881 genesis_context *gen = cd->genesis;
882 if (gen->header.debugger_type == DEBUGGER_NATIVE) {
883 debugger(context, address);
884 } else {
885 gdb_debug_enter(context, address);
886 }
880 } 887 }
881 switch (context->int_ack) 888 switch (context->int_ack)
882 { 889 {
883 case 1: 890 case 1:
884 cd->graphics_int_cycle = CYCLE_NEVER; 891 cd->graphics_int_cycle = CYCLE_NEVER;
905 { 912 {
906 uint8_t m68k_run = !can_main_access_prog(cd); 913 uint8_t m68k_run = !can_main_access_prog(cd);
907 while (cycle > cd->m68k->current_cycle) { 914 while (cycle > cd->m68k->current_cycle) {
908 if (m68k_run) { 915 if (m68k_run) {
909 uint32_t start = cd->m68k->current_cycle; 916 uint32_t start = cd->m68k->current_cycle;
910 cd->m68k->sync_cycle = cycle; 917 cd->m68k->sync_cycle = cd->enter_debugger ? cd->m68k->current_cycle + 1 : cycle;
911 if (cd->need_reset) { 918 if (cd->need_reset) {
912 cd->need_reset = 0; 919 cd->need_reset = 0;
913 m68k_reset(cd->m68k); 920 m68k_reset(cd->m68k);
914 } else { 921 } else {
915 calculate_target_cycle(cd->m68k); 922 calculate_target_cycle(cd->m68k);