Max/nunuhara_xsystem4
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Initial DAP implementation

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So far only basic debugging functionality is implemented (breakpoints,
stepping, stack traces/variables).

This is not tested against an established DAP client. My intention is to
create a custom GUI frontend and extend the protocol to support
xsystem4-specific features, such as inspecting the scene. (This work is
underway.)

Instruction references are hex-encoded address strings. Clients do not
need to obtain them from DAP requests. This is outside the spec, but it
is needed for a binary-only debugger.

Functions that write directly to stdout (e.g. printf) should generally
not be used any more.  Instead, use either sys_message (which respects
sys_silent) or log_message (which will send the message to the debugger
if DAP is enabled). stderr can be used as normal.
This commit is contained in:
Nunuhara Cabbage
2023-04-29 10:32:50 -07:00
parent 4ad893c147
commit d4e06db8e2
19 changed files with 1217 additions and 255 deletions
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include/debugger.h
+17
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@@ -18,6 +18,7 @@
#define SYSTEM4_DEBUGGER_H
#ifdef DEBUGGER_ENABLED
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include "system4/instructions.h"
@@ -46,6 +47,7 @@ struct dbg_cmd {
void (*run)(unsigned nr_args, char **args);
};
extern bool dbg_dap;
extern bool dbg_enabled;
extern bool dbg_start_in_debugger;
extern unsigned dbg_current_frame;
@@ -54,6 +56,8 @@ void dbg_init(void);
void dbg_fini(void);
void dbg_repl(void);
void dbg_log(const char *log, const char *fmt, va_list ap);
void dbg_continue(void);
void dbg_quit(void);
void dbg_start(void(*fun)(void*), void *data);
@@ -61,6 +65,7 @@ void dbg_cmd_init(void);
void dbg_cmd_repl(void);
void dbg_cmd_add_module(const char *name, unsigned nr_commands, struct dbg_cmd *commands);
void dbg_handle_breakpoint(void);
bool dbg_clear_breakpoint(uint32_t addr, void(*free_data)(void*));
bool dbg_set_function_breakpoint(const char *_name, void(*cb)(struct breakpoint*), void *data);
bool dbg_set_address_breakpoint(uint32_t address, void(*cb)(struct breakpoint*), void *data);
bool dbg_set_step_over_breakpoint(void);
@@ -73,10 +78,22 @@ void dbg_print_vm_state(void);
union vm_value dbg_eval_string(const char *str, struct ain_type *type_out);
struct string *dbg_value_to_string(struct ain_type *type, union vm_value value, int recursive);
void dbg_dap_init(void);
void dbg_dap_quit(void);
void dbg_dap_repl(void);
void dbg_dap_handle_messages(void);
void dbg_dap_log(const char *log, const char *fmt, va_list ap);
#ifdef HAVE_SCHEME
void dbg_scm_init(void);
void dbg_scm_fini(void);
void dbg_scm_repl(void);
#endif /* HAVE_SCHEME */
#else /* DEBUGGER ENABLED */
#define dbg_init()
#define dbg_repl()
#define dbg_dap 0
#define dbg_dap_handle_messages()
#define dbg_dap_log(log, fmt, ap)
#endif /* DEBUGGER_ENABLED */
#endif /* SYSTEM4_DEBUGGER_H */