diff options
Diffstat (limited to 'sdk-modifications/include/ds2_excpt.h')
| -rwxr-xr-x | sdk-modifications/include/ds2_excpt.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sdk-modifications/include/ds2_excpt.h b/sdk-modifications/include/ds2_excpt.h new file mode 100755 index 0000000..08fe77e --- /dev/null +++ b/sdk-modifications/include/ds2_excpt.h @@ -0,0 +1,55 @@ +#ifndef __DS2_EXCPT_H__ +#define __DS2_EXCPT_H__ + +#include <mipsregs.h> +extern unsigned int Process_RA; +extern unsigned int Process_SP; + +#define SAVE_PROCESS_REGISTER() \ + do{ unsigned int sr ; \ + sr = read_c0_status(); \ + write_c0_status((sr&(~1))); \ + __asm__ __volatile__( \ + "sw $31,0x00(%0)\n\t" \ + "sw $29,0x00(%1)\n\t" \ + : \ + : "r" (&Process_RA),"r" (&Process_SP)); \ + write_c0_status(sr); \ + }while(0) + +#define RESTORE_PROCESS_REGISTER() \ + __asm__ __volatile__( \ + "lw $31,0x00(%0)\n\t" \ + "lw $29,0x00(%1)\n\t" \ + : \ + : "r" (&Process_RA),"r" (&Process_SP)) + +inline static void excpt_exit(x) \ +{ + unsigned int sr; + sr = read_c0_status(); + write_c0_status(sr & (~1)); + __asm__ __volatile__("lw $2,0x00(%0)\n\t" :: "r" (&x)); + RESTORE_PROCESS_REGISTER(); + write_c0_status(sr); + __asm__ __volatile__( + "jr $31\n\t" + "nop\n\t" + ); +} + +typedef void (*PFun_Exception_Handler)(unsigned int); + +//Setup handle to process the exception +//except_index: exception number +//except_handle: handle to process the exception +//arg: argument to the handle +extern int Setup_except_handle(unsigned int except_index, PFun_Exception_Handler except_handle, unsigned int arg); + +//Add a write watched exception, if the CPU write the addr, a exception will +// generated, the watch exception's number is 23 +//addr: address to be watched +extern void add_watch_point(unsigned int addr); + +#endif //__DS2_EXCPT_H__ + |