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/*
* include/asm-m68k/kgdb.h
*
* Copyright (C) 1996 Roman Hodek
*/
#ifndef __ASM_M68k_KGDB_H
#define __ASM_M68k_KGDB_H
/*
* Structure to save all register values in, already in the order gdb wants
* it. Note that the upper half of the SR field is recycled for the FORMAT and
* VECTOR fields. Hope that doesn't confuse gdb... That upper half is ignored
* on exiting the stub, so gdb can modify it as it likes.
*/
#define GDBREG_A6 14
#define GDBREG_A7 15
#define GDBREG_SP 15
#define GDBREG_SR 16
#define GDBREG_PC 17
#define GDBREG_FP0 18
#define GDBREG_FP7 25
#define GDBREG_FPCR 26
#define GDBREG_FPIAR 28
#define GDBOFFA_D6 (6*4)
#define GDBOFFA_A3 (11*4)
#define NUMREGSBYTES 180
#ifndef __ASSEMBLY__
struct gdb_regs {
long regs[16]; /* d0-a7 */
unsigned format : 4; /* frame format specifier */
unsigned vector : 12; /* vector offset */
unsigned short sr; /* status register */
unsigned long pc; /* program counter */
unsigned long fpregs[8*3]; /* fp0-fp7 */
unsigned long fpcntl[3]; /* fpcr, fpsr, fpiar */
};
extern struct gdb_regs kgdb_registers;
extern void kgdb_init( void );
struct frame;
extern asmlinkage void enter_kgdb( struct pt_regs *fp );
extern int kgdb_initialized;
/*
* This function will generate a breakpoint exception. It is used at the
* beginning of a program to sync up with a debugger and can be used
* otherwise as a quick means to stop program execution and "break" into
* the debugger.
*/
extern inline void breakpoint( void )
{
if (!kgdb_initialized)
/* if kgdb not inited, do nothing */
return;
/* breakpoint instruction is TRAP #15 */
__asm__ __volatile__ ( "trap #15" );
}
/*
* This function will report a SIGABORT to gdb.
*/
extern inline void kgdb_abort( void )
{
if (!kgdb_initialized)
/* if kgdb not inited, do nothing */
return;
/* TRAP #14 is reported as SIGABORT */
__asm__ __volatile__ ( "trap #14" );
}
#endif /* __ASSEMBLY__ */
#endif /* __ASM_M68k_KGDB_H */
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