PSPSDK 2024-12-16
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Data Structures | Typedefs | Functions
Debug Utility Library

Data Structures

struct  _PspDebugRegBlock
 Structure to hold the register data associated with an exception. More...
 
struct  _PspDebugStackTrace
 Structure to hold a single stack trace entry. More...
 
struct  _PspDebugProfilerRegs
 Structure to hold the psp profiler register values. More...
 

Typedefs

typedef struct _PspDebugRegBlock PspDebugRegBlock
 Structure to hold the register data associated with an exception.
 
typedef void(* PspDebugErrorHandler) (PspDebugRegBlock *regs)
 Defines a debug error handler.
 
typedef int(* PspDebugKprintfHandler) (const char *format, u32 *args)
 Type for Kprintf handler.
 
typedef struct _PspDebugStackTrace PspDebugStackTrace
 Structure to hold a single stack trace entry.
 
typedef struct _PspDebugProfilerRegs PspDebugProfilerRegs
 Structure to hold the psp profiler register values.
 
typedef int(* PspDebugPrintHandler) (const char *data, int len)
 Type for the debug print handlers.
 
typedef int(* PspDebugInputHandler) (char *data, int len)
 Type for the debug input handler.
 

Functions

void pspDebugScreenInit (void)
 Initialise the debug screen.
 
void pspDebugScreenInitEx (void *vram_base, int mode, int setup)
 Extended debug screen init.
 
void pspDebugScreenPrintf (const char *fmt,...) __attribute__((format(printf
 Do a printf to the debug screen.
 
void void pspDebugScreenKprintf (const char *format,...) __attribute__((format(printf
 Do a printf to the debug screen.
 
void void void pspDebugScreenEnableBackColor (int enable)
 Enable or disable background colour writing (defaults to enabled)
 
void pspDebugScreenSetBackColor (u32 color)
 Set the background color for the text.
 
void pspDebugScreenSetTextColor (u32 color)
 Set the text color.
 
void pspDebugScreenSetColorMode (int mode)
 Set the color mode (you must have switched the frame buffer appropriately)
 
void pspDebugScreenPutChar (int x, int y, u32 color, u8 ch)
 Draw a single character to the screen.
 
void pspDebugScreenSetXY (int x, int y)
 Set the current X and Y co-ordinate for the screen (in character units)
 
void pspDebugScreenSetOffset (int offset)
 Set the video ram offset used for the screen.
 
void pspDebugScreenSetBase (u32 *base)
 Set the video ram base used for the screen.
 
int pspDebugScreenGetX (void)
 Get the current X co-ordinate (in character units)
 
int pspDebugScreenGetY (void)
 Get the current Y co-ordinate (in character units)
 
void pspDebugScreenClear (void)
 Clear the debug screen.
 
int pspDebugScreenPrintData (const char *buff, int size)
 Print non-nul terminated strings.
 
int pspDebugScreenPuts (const char *str)
 Print a string.
 
int pspDebugGetStackTrace (unsigned int *results, int max)
 Get a MIPS stack trace (might work :P)
 
void pspDebugScreenClearLineEnable (void)
 Enable the clear line function that allows debug to clear the screen.
 
void pspDebugScreenClearLineDisable (void)
 Disable the clear line function that causes flicker on constant refreshes.
 
int pspDebugInstallErrorHandler (PspDebugErrorHandler handler)
 Install an error handler to catch unhandled exceptions.
 
void pspDebugDumpException (PspDebugRegBlock *regs)
 Dump an exception to screen using the pspDebugScreen functions.
 
int pspDebugInstallKprintfHandler (PspDebugKprintfHandler handler)
 Install a Kprintf handler into the system.
 
int pspDebugGetStackTrace2 (PspDebugRegBlock *regs, PspDebugStackTrace *trace, int max)
 Do a stack trace from the current exception.
 
void pspDebugProfilerEnable (void)
 Enables the profiler hardware.
 
void pspDebugProfilerDisable (void)
 Disables the profiler hardware.
 
void pspDebugProfilerClear (void)
 Clear the profiler registers.
 
void pspDebugProfilerGetRegs (PspDebugProfilerRegs *regs)
 Get the profiler register state.
 
void pspDebugProfilerPrint (void)
 Print the profiler registers to screen.
 
int pspDebugInstallStdinHandler (PspDebugInputHandler handler)
 Install a handler for stdin (so you can use normal stdio functions)
 
int pspDebugInstallStdoutHandler (PspDebugPrintHandler handler)
 Install a print handler for stdout (so you can use normal print functions)
 
int pspDebugInstallStderrHandler (PspDebugPrintHandler handler)
 Install a print handler for stderr (so you can use normal print functions)
 
void pspDebugSioPutchar (int ch)
 Put a character to the remote sio.
 
int pspDebugSioGetchar (void)
 Get a character from the remote sio.
 
void pspDebugSioPuts (const char *str)
 Write a string to the sio port.
 
int pspDebugSioPutData (const char *data, int len)
 Write a set of data to the sio port.
 
int pspDebugSioPutText (const char *data, int len)
 Write a set of data to the sio port converting single line feeds to CRLF and single CR to CRLF.
 
void pspDebugSioInit (void)
 Initialise the remote SIO port (defaults to 4800 8N1).
 
void pspDebugSioSetBaud (int baud)
 Set the baud rate of the SIO, e.g.
 
void pspDebugEnablePutchar (void)
 Enable debug character output.
 
void pspDebugSioInstallKprintf (void)
 Install a kprintf debug putchar handler.
 
void pspDebugGdbStubInit (void)
 Install the gdb stub handler.
 
void pspDebugBreakpoint (void)
 Generate a breakpoint exception.
 
void pspDebugSioEnableKprintf (void)
 Enable the kprintf handler (once installed)
 
void pspDebugSioDisableKprintf (void)
 Disable the kprintf handler (once installed)
 

Detailed Description

Typedef Documentation

◆ PspDebugErrorHandler

typedef void(* PspDebugErrorHandler) (PspDebugRegBlock *regs)

Defines a debug error handler.

◆ PspDebugInputHandler

typedef int(* PspDebugInputHandler) (char *data, int len)

Type for the debug input handler.

◆ PspDebugKprintfHandler

typedef int(* PspDebugKprintfHandler) (const char *format, u32 *args)

Type for Kprintf handler.

◆ PspDebugPrintHandler

typedef int(* PspDebugPrintHandler) (const char *data, int len)

Type for the debug print handlers.

◆ PspDebugProfilerRegs

typedef struct _PspDebugProfilerRegs PspDebugProfilerRegs

Structure to hold the psp profiler register values.

◆ PspDebugRegBlock

typedef struct _PspDebugRegBlock PspDebugRegBlock

Structure to hold the register data associated with an exception.

◆ PspDebugStackTrace

typedef struct _PspDebugStackTrace PspDebugStackTrace

Structure to hold a single stack trace entry.

Function Documentation

◆ pspDebugBreakpoint()

void pspDebugBreakpoint ( void  )

Generate a breakpoint exception.

◆ pspDebugDumpException()

void pspDebugDumpException ( PspDebugRegBlock *  regs)

Dump an exception to screen using the pspDebugScreen functions.

Note
This function will not setup the screen for debug output, you should call sceDebugScreenInit before using it if it isn't already.
Parameters
regs- Pointer to a register block.

References _PspDebugRegBlock::badvaddr, _PspDebugRegBlock::cause, _PspDebugRegBlock::epc, i, pspDebugScreenPrintf(), _PspDebugRegBlock::r, sceDisplayWaitVblankStart(), and _PspDebugRegBlock::status.

◆ pspDebugEnablePutchar()

void pspDebugEnablePutchar ( void  )

Enable debug character output.

Needs to be called in order for the default Kprintf handler to work.

Referenced by pspDebugSioInstallKprintf().

◆ pspDebugGdbStubInit()

void pspDebugGdbStubInit ( void  )

Install the gdb stub handler.

References _gdbSupportLibInit(), pspDebugInstallErrorHandler(), pspDebugInstallStderrHandler(), and pspDebugInstallStdoutHandler().

◆ pspDebugGetStackTrace()

int pspDebugGetStackTrace ( unsigned int *  results,
int  max 
)

Get a MIPS stack trace (might work :P)

Parameters
results- List of points to store the results of the trace, (up to max)
max- Maximum number of back traces
Returns
The number of frames stored in results.

References _etext, _ftext, ADJUST_STACKP_C, ADJUST_STACKP_C_MASK, ADJUST_STACKP_V, ADJUST_STACKP_V_MASK, CALL, FALSE, HASH, main(), OR_LOWER_C, OR_LOWER_C_MASK, pspGetReturnAddress(), pspGetStackPointer(), ra, _returnCache::raOffset, RESTORE_RETURNVAL, RESTORE_RETURNVAL2, RESTORE_RETURNVAL3, RESTORE_RETURNVAL_MASK, RETURN, _returnCache::returnAddress, SET_LOWER_C, SET_LOWER_C_MASK, SET_UPPER_C, SET_UPPER_C_MASK, sp, _returnCache::spAdjust, and TRUE.

◆ pspDebugGetStackTrace2()

int pspDebugGetStackTrace2 ( PspDebugRegBlock *  regs,
PspDebugStackTrace *  trace,
int  max 
)

Do a stack trace from the current exception.

Note
This function really isn't too general purpose and it is more than likely to generate a few false positives but I consider that better then missing out calls entirely. You have to use your discretion, your code and a objdump to work out if some calls are completely surprious or not ;)
Parameters
regs- Pointer to a register block from an exception.
trace- Pointer to an array of PspDebugStackTrace structures.
max- The maximum number of traces to make.
Returns
The number of functions found.

References NULL, sceKernelGetThreadId(), sceKernelReferThreadStatus(), and x.

◆ pspDebugInstallErrorHandler()

int pspDebugInstallErrorHandler ( PspDebugErrorHandler  handler)

Install an error handler to catch unhandled exceptions.

Parameters
handler- Pointer to a handler function. If set to NULL it will default to resetting the screen and dumping the error.
Returns
< 0 on error

References _pspDebugExceptionHandler(), and sceKernelRegisterDefaultExceptionHandler().

Referenced by pspDebugGdbStubInit().

◆ pspDebugInstallKprintfHandler()

int pspDebugInstallKprintfHandler ( PspDebugKprintfHandler  handler)

Install a Kprintf handler into the system.

Parameters
handler- Function pointer to the handler.
Returns
< 0 on error.

References NULL, and sceKernelRegisterKprintfHandler().

◆ pspDebugInstallStderrHandler()

int pspDebugInstallStderrHandler ( PspDebugPrintHandler  handler)

Install a print handler for stderr (so you can use normal print functions)

Parameters
handler- A pointer to print handler, NULL to disable.
Returns
< 0 on error, else 0.

References g_initialised, and x.

Referenced by pspDebugGdbStubInit().

◆ pspDebugInstallStdinHandler()

int pspDebugInstallStdinHandler ( PspDebugInputHandler  handler)

Install a handler for stdin (so you can use normal stdio functions)

Parameters
handler- A pointer to input handler, NULL to disable.
Returns
< 0 on error, else 0.

References g_initialised, and x.

◆ pspDebugInstallStdoutHandler()

int pspDebugInstallStdoutHandler ( PspDebugPrintHandler  handler)

Install a print handler for stdout (so you can use normal print functions)

Parameters
handler- A pointer to print handler, NULL to disable.
Returns
< 0 on error, else 0.

References g_initialised, and x.

Referenced by pspDebugGdbStubInit().

◆ pspDebugProfilerClear()

void pspDebugProfilerClear ( void  )

Clear the profiler registers.

References i, PROFILER_REG_BASE, and PROFILER_REG_COUNT.

◆ pspDebugProfilerDisable()

void pspDebugProfilerDisable ( void  )

Disables the profiler hardware.

References PROFILER_REG_BASE.

◆ pspDebugProfilerEnable()

void pspDebugProfilerEnable ( void  )

Enables the profiler hardware.

References PROFILER_REG_BASE.

◆ pspDebugProfilerGetRegs()

void pspDebugProfilerGetRegs ( PspDebugProfilerRegs *  regs)

Get the profiler register state.

Parameters
regs- A pointer to a PspDebugProfilerRegs structure.

References i, NULL, PROFILER_REG_BASE, and PROFILER_REG_COUNT.

Referenced by pspDebugProfilerPrint().

◆ pspDebugProfilerPrint()

void pspDebugProfilerPrint ( void  )

Print the profiler registers to screen.

References _PspDebugProfilerRegs::bus_access, _PspDebugProfilerRegs::cached_load, _PspDebugProfilerRegs::cached_store, _PspDebugProfilerRegs::cop0_inst, _PspDebugProfilerRegs::copz, _PspDebugProfilerRegs::cpuck, _PspDebugProfilerRegs::d_miss, _PspDebugProfilerRegs::d_writeback, _PspDebugProfilerRegs::enable, _PspDebugProfilerRegs::fpu_inst, _PspDebugProfilerRegs::i_miss, _PspDebugProfilerRegs::internal, _PspDebugProfilerRegs::local_bus, _PspDebugProfilerRegs::memory, pspDebugProfilerGetRegs(), pspDebugScreenPrintf(), _PspDebugProfilerRegs::sleep, _PspDebugProfilerRegs::systemck, _PspDebugProfilerRegs::uncached_load, _PspDebugProfilerRegs::uncached_store, _PspDebugProfilerRegs::vfpu, and _PspDebugProfilerRegs::vfpu_inst.

◆ pspDebugScreenClear()

void pspDebugScreenClear ( void  )

Clear the debug screen.

◆ pspDebugScreenClearLineDisable()

void pspDebugScreenClearLineDisable ( void  )

Disable the clear line function that causes flicker on constant refreshes.

◆ pspDebugScreenClearLineEnable()

void pspDebugScreenClearLineEnable ( void  )

Enable the clear line function that allows debug to clear the screen.

◆ pspDebugScreenEnableBackColor()

void void void pspDebugScreenEnableBackColor ( int  enable)

Enable or disable background colour writing (defaults to enabled)

Parameters
enable- Set 1 to to enable background color, 0 for disable

◆ pspDebugScreenGetX()

int pspDebugScreenGetX ( void  )

Get the current X co-ordinate (in character units)

Returns
The X co-ordinate

◆ pspDebugScreenGetY()

int pspDebugScreenGetY ( void  )

Get the current Y co-ordinate (in character units)

Returns
The Y co-ordinate

◆ pspDebugScreenInit()

void pspDebugScreenInit ( void  )

Initialise the debug screen.

◆ pspDebugScreenInitEx()

void pspDebugScreenInitEx ( void *  vram_base,
int  mode,
int  setup 
)

Extended debug screen init.

Parameters
vram_base- Base address of frame buffer, if NULL then sets a default
mode- Colour mode
setup- Setup the screen if 1

◆ pspDebugScreenKprintf()

void void pspDebugScreenKprintf ( const char *  format,
  ... 
)

Do a printf to the debug screen.

Note
This is for kernel mode only as it uses a kernel function to perform the printf instead of using vsnprintf, use normal printf for user mode.
Parameters
format- Format string to print
...- Arguments

◆ pspDebugScreenPrintData()

int pspDebugScreenPrintData ( const char *  buff,
int  size 
)

Print non-nul terminated strings.

Parameters
buff- Buffer containing the text.
size- Size of the data
Returns
The number of characters written

◆ pspDebugScreenPrintf()

void pspDebugScreenPrintf ( const char *  fmt,
  ... 
)

Do a printf to the debug screen.

Parameters
fmt- Format string to print
...- Arguments

Referenced by pspDebugDumpException(), pspDebugKbClearBox(), pspDebugKbDrawBox(), pspDebugKbDrawKey(), pspDebugKbDrawString(), and pspDebugProfilerPrint().

◆ pspDebugScreenPutChar()

void pspDebugScreenPutChar ( int  x,
int  y,
u32  color,
u8  ch 
)

Draw a single character to the screen.

Parameters
x- The x co-ordinate to draw to (pixel units)
y- The y co-ordinate to draw to (pixel units)
color- The text color to draw
ch- The character to draw

◆ pspDebugScreenPuts()

int pspDebugScreenPuts ( const char *  str)

Print a string.

Parameters
str- String
Returns
The number of characters written

◆ pspDebugScreenSetBackColor()

void pspDebugScreenSetBackColor ( u32  color)

Set the background color for the text.

Note
To reset the entire screens bg colour you need to call pspDebugScreenClear
Parameters
color- A 32bit RGB colour

Referenced by pspDebugKbClearBox(), pspDebugKbDrawBox(), pspDebugKbDrawKey(), and pspDebugKbDrawString().

◆ pspDebugScreenSetBase()

void pspDebugScreenSetBase ( u32 *  base)

Set the video ram base used for the screen.

Parameters
base- Base address in bytes

◆ pspDebugScreenSetColorMode()

void pspDebugScreenSetColorMode ( int  mode)

Set the color mode (you must have switched the frame buffer appropriately)

Parameters
mode- Color mode

◆ pspDebugScreenSetOffset()

void pspDebugScreenSetOffset ( int  offset)

Set the video ram offset used for the screen.

Parameters
offset- Offset in bytes

◆ pspDebugScreenSetTextColor()

void pspDebugScreenSetTextColor ( u32  color)

Set the text color.

Parameters
color- A 32 bit BGR color

Referenced by pspDebugKbClearBox(), pspDebugKbDrawBox(), pspDebugKbDrawKey(), and pspDebugKbDrawString().

◆ pspDebugScreenSetXY()

void pspDebugScreenSetXY ( int  x,
int  y 
)

Set the current X and Y co-ordinate for the screen (in character units)

Referenced by pspDebugKbClearBox(), pspDebugKbDrawBox(), pspDebugKbDrawKey(), and pspDebugKbDrawString().

◆ pspDebugSioDisableKprintf()

void pspDebugSioDisableKprintf ( void  )

Disable the kprintf handler (once installed)

◆ pspDebugSioEnableKprintf()

void pspDebugSioEnableKprintf ( void  )

Enable the kprintf handler (once installed)

◆ pspDebugSioGetchar()

int pspDebugSioGetchar ( void  )

Get a character from the remote sio.

Returns
The character read or -1 if no characters available.

References PSP_UART4_FIFO, PSP_UART4_STAT, and PSP_UART_RXEMPTY.

Referenced by getDebugChar().

◆ pspDebugSioInit()

void pspDebugSioInit ( void  )

Initialise the remote SIO port (defaults to 4800 8N1).

Note
will delay 2 seconds to wait for the power to come up.

References sceHprmEnd(), sceKernelDelayThread(), sceSysconCtrlHRPower(), and sceSysregUartIoEnable().

◆ pspDebugSioInstallKprintf()

void pspDebugSioInstallKprintf ( void  )

Install a kprintf debug putchar handler.

Implicitly calls pspDebugEnablePutchar so you do not need to call it explicitly. Sio must be initialised before calling this function however.

References pspDebugEnablePutchar(), and sceKernelRegisterDebugPutchar().

◆ pspDebugSioPutchar()

void pspDebugSioPutchar ( int  ch)

Put a character to the remote sio.

Parameters
ch- Character to write.

References PSP_UART4_FIFO, PSP_UART4_STAT, PSP_UART_TXFULL, and x.

Referenced by pspDebugSioPutData(), pspDebugSioPuts(), pspDebugSioPutText(), and putDebugChar().

◆ pspDebugSioPutData()

int pspDebugSioPutData ( const char *  data,
int  len 
)

Write a set of data to the sio port.

Parameters
data- Pointer to the data to send.
len- Length of the data.
Returns
Number of characters written.

References i, and pspDebugSioPutchar().

◆ pspDebugSioPuts()

void pspDebugSioPuts ( const char *  str)

Write a string to the sio port.

Parameters
str- String to write.

References pspDebugSioPutchar().

◆ pspDebugSioPutText()

int pspDebugSioPutText ( const char *  data,
int  len 
)

Write a set of data to the sio port converting single line feeds to CRLF and single CR to CRLF.

Parameters
data- Pointer to the data to send.
len- Length of the data.
Returns
Number of characters written.

References i, and pspDebugSioPutchar().

◆ pspDebugSioSetBaud()

void pspDebugSioSetBaud ( int  baud)

Set the baud rate of the SIO, e.g.

4800/9600..115200.

Parameters
baud- The baudrate to set.

References PSP_UART4_CTRL, PSP_UART4_DIV1, PSP_UART4_DIV2, PSP_UART_CLK, and x.