sdk-world v2026.11.05
PS2 SDK - world tier (copyleft-allowed, non-essential packages)
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ioptrap.h
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1/*
2# _____ ___ ____ ___ ____
3# ____| | ____| | | |____|
4# | ___| |____ ___| ____| | \ PS2DEV Open Source Project.
5#-----------------------------------------------------------------------
6# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
7# Licenced under Academic Free License version 2.0
8# Review ps2sdk README & LICENSE files for further details.
9*/
10
15
16#ifndef __IOPTRAP_H__
17#define __IOPTRAP_H__
18
19#include <types.h>
20#include <irx.h>
21
22/* IDT_R3000_20.pdf 3-11 table 3.5 */
23typedef enum {
24 EXCEPTION_Int, /* note you can't really work with this one. */
25 EXCEPTION_Mod,
26 EXCEPTION_TLBL,
27 EXCEPTION_TLBS,
28 EXCEPTION_AdEL,
29 EXCEPTION_AdES,
30 EXCEPTION_IBE,
31 EXCEPTION_DBE,
32 EXCEPTION_Syscall,
33 EXCEPTION_Bp,
34 EXCEPTION_RI,
35 EXCEPTION_CpU,
36 EXCEPTION_Ov,
37 EXCEPTION_RESERVED13,
38 EXCEPTION_RESERVED14 /* would be FPE, but that's not going to happen on the IOP */
39} exception_type_t;
40
41typedef struct exception_frame
42{
43 u32 epc;
44 u32 cause;
45 u32 badvaddr;
46 u32 sr;
47 u32 regs[32];
48 u32 hi;
49 u32 lo;
50 u32 dcic;
51} exception_frame_t;
52
53/* Beware: the handler will be run in a 'bad' state. Consider you are
54 on interrupt mode, so, only i* functions. */
55typedef void (*trap_exception_handler_t)(exception_type_t type, exception_frame_t *ex);
56
57#define DCIC_WR (1 << 27)
58#define DCIC_RD (1 << 26)
59#define DCIC_DA (1 << 25)
60#define DCIC_PC (1 << 24)
61
62extern const char *get_exception_name(exception_type_t type);
63
64/* Will act as a setjmp. Returns 0 to say it was the first call,
65 otherwise, returns the exception number. (note that you'll never
66 get any interrupt...) Note that using this will completely disable
67 user defined exception handlers. */
68extern exception_type_t dbg_setjmp();
69
70/* Will return the old handler. */
71extern trap_exception_handler_t set_exception_handler(exception_type_t type, trap_exception_handler_t handler);
72extern trap_exception_handler_t get_exception_handler(exception_type_t type);
73
74/* Breakpoint stuff. */
75extern void set_dba(u32 v);
76extern void set_dbam(u32 v);
77extern void set_dcic(u32 v);
78extern u32 get_dba();
79extern u32 get_dbam();
80extern u32 get_dcic();
81
82#define ioptrap_IMPORTS_start DECLARE_IMPORT_TABLE(ioptrap, 1, 1)
83#define ioptrap_IMPORTS_end END_IMPORT_TABLE
84
85#define I_get_exception_name DECLARE_IMPORT(4, get_exception_name)
86#define I_dbg_setjmp DECLARE_IMPORT(5, dbg_setjmp)
87#define I_set_exception_handler DECLARE_IMPORT(6, set_exception_handler)
88#define I_get_exception_handler DECLARE_IMPORT(7, get_exception_handler)
89#define I_set_dba DECLARE_IMPORT(8, set_dba)
90#define I_set_dbam DECLARE_IMPORT(9, set_dbam)
91#define I_set_dcic DECLARE_IMPORT(10, set_dcic)
92#define I_get_dba DECLARE_IMPORT(11, get_dba)
93#define I_get_dbam DECLARE_IMPORT(12, get_dbam)
94#define I_get_dcic DECLARE_IMPORT(13, get_dcic)
95
96#endif /* __IOPTRAP_H__ */
exception_frame
Definition ioptrap.h:42