mirror of
https://github.com/rkujawa/rk65c02.git
synced 2026-03-11 03:16:11 +00:00
a73ebc3024
- interrupts: IRQ vector at $FFFE, vector device at $FFFC, idle_wait + assert_irq - hello_serial: custom bus device at $DE00, guest writes host prints - stepper: rk65c02_step(1) loop with regs and disassembly - jit_bench: min3.rom interpreter vs JIT wall time - breakpoints: debug_breakpoint_add at min3 entry, inspect then continue - README: document new examples, run from examples/ or make run-<name> - Makefile: EXAMPLES and run-* targets for all five Made-with: Cursor
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
|
|
* Breakpoints example — debug_breakpoint_add, run until hit, inspect, continue.
|
|
*
|
|
* Build: make breakpoints min3.rom
|
|
* Run: ./breakpoints
|
|
*
|
|
* Demonstrates: debug_breakpoint_add, run until BREAKPOINT stop, print regs and
|
|
* disassembly at breakpoint, debug_breakpoint_remove, then continue to STP.
|
|
* Expected: stops at breakpoint (min3 entry), prints state; after remove, STP; PASS.
|
|
*/
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
|
|
#include "bus.h"
|
|
#include "debug.h"
|
|
#include "instruction.h"
|
|
#include "rk65c02.h"
|
|
|
|
static const uint16_t load_addr = 0xC000;
|
|
#define BP_ADDR 0xC004 /* first instruction of min3 routine in min3.s (after JSR+STP) */
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
rk65c02emu_t e;
|
|
uint8_t a = 5, b = 9, c = 4;
|
|
|
|
e = rk65c02_load_rom("min3.rom", load_addr, NULL);
|
|
e.regs.SP = 0xFF;
|
|
e.regs.PC = load_addr;
|
|
stack_push(&e, a);
|
|
stack_push(&e, b);
|
|
stack_push(&e, c);
|
|
|
|
if (!debug_breakpoint_add(&e, BP_ADDR)) {
|
|
fprintf(stderr, "FAIL: could not add breakpoint at $%04X\n", BP_ADDR);
|
|
return 1;
|
|
}
|
|
|
|
rk65c02_start(&e);
|
|
|
|
if (e.stopreason != BREAKPOINT) {
|
|
fprintf(stderr, "FAIL: expected BREAKPOINT, got %s\n",
|
|
rk65c02_stop_reason_string(e.stopreason));
|
|
return 1;
|
|
}
|
|
|
|
printf("Breakpoint hit at $%04X\n", e.regs.PC);
|
|
printf(" A=$%02X X=$%02X Y=$%02X SP=$%02X\n",
|
|
e.regs.A, e.regs.X, e.regs.Y, e.regs.SP);
|
|
printf(" ");
|
|
disassemble(e.bus, e.regs.PC);
|
|
|
|
debug_breakpoint_remove(&e, BP_ADDR);
|
|
rk65c02_start(&e);
|
|
|
|
if (e.stopreason != STP) {
|
|
fprintf(stderr, "FAIL: after continue expected STP, got %s\n",
|
|
rk65c02_stop_reason_string(e.stopreason));
|
|
return 1;
|
|
}
|
|
|
|
printf("PASS: breakpoint hit, state inspected, continued to STP.\n");
|
|
return 0;
|
|
}
|