mirror of https://github.com/PCSX2/pcsx2.git
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
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/*********************************************************************
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* Copyright (C) 2004 Lukasz Bruun (mail@lukasz.dk)
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* This file is subject to the terms and conditions of the PS2Link License.
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* See the file LICENSE in the main directory of this distribution for more
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* details.
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*/
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#include <tamtypes.h>
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#include "irx_imports.h"
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#include "hostlink.h"
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#define BUFFER_SIZE sizeof(exception_frame_t)+4+4+128
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u32 excep_buffer[BUFFER_SIZE/4] __attribute__ ((aligned(16)));
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extern unsigned int pcsx2fioSendSifCmd(unsigned int cmd, void *src, unsigned int len); // lazy fix :)
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extern int excepscrdump;
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#define PKO_RPC_IOPEXCEP 12
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// taken from smod by mrbrown, only use one function, didn't wanna include another irx.
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/* Module info entry. */
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typedef struct _smod_mod_info {
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struct _smod_mod_info *next;
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u8 *name;
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u16 version;
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u16 newflags; /* For modload shipped with games. */
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u16 id;
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u16 flags; /* I believe this is where flags are kept for BIOS versions. */
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u32 entry; /* _start */
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u32 gp;
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u32 text_start;
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u32 text_size;
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u32 data_size;
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u32 bss_size;
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u32 unused1;
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u32 unused2;
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} smod_mod_info_t;
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smod_mod_info_t *smod_get_next_mod(smod_mod_info_t *cur_mod)
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{
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/* If cur_mod is 0, return the head of the list (IOP address 0x800). */
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if (!cur_mod) {
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return (smod_mod_info_t *)0x800;
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} else {
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if (!cur_mod->next)
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return 0;
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else
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return cur_mod->next;
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}
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return 0;
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}
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char* ExceptionGetModuleName(u32 epc, u32* r_epc)
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{
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smod_mod_info_t *mod_info = 0;
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while((mod_info = smod_get_next_mod(mod_info)) != 0)
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{
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if((epc >= mod_info->text_start) && (epc <= (mod_info->text_start+mod_info->text_size)))
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{
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if(r_epc)
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*r_epc = epc - mod_info->text_start;
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return mod_info->name;
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}
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}
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return 0;
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}
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static void excep_handler2(exception_frame_t *frame)
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{
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u32 r_epc; // relative epc
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char *module_name;
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u32 len;
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u32* buffer = excep_buffer;
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module_name = ExceptionGetModuleName(frame->epc, &r_epc);
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len = strlen(module_name);
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buffer[0] = 0x0d02beba; // reverse engineering..
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buffer++;
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memcpy(buffer, frame, BUFFER_SIZE);
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buffer+= (sizeof(exception_frame_t)/4);
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buffer[0] = r_epc;
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buffer[1] = len;
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buffer+=2;
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memcpy(buffer, module_name, len+1);
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//pcsx2fioSendSifCmd(PKO_RPC_IOPEXCEP, excep_buffer, BUFFER_SIZE);
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}
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static void excep_handler(exception_type_t type, exception_frame_t *frame)
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{
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excep_handler2(frame); // Don't know why this works, but keeps iop alive.
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}
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////////////////////////////////////////////////////////////////////////
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// Installs iop exception handlers for the 'usual' exceptions..
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void installExceptionHandlers(void)
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{
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s32 i;
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for(i=1; i < 8; i++)
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set_exception_handler(i, excep_handler);
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for(i=10; i < 13; i++)
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set_exception_handler(i, excep_handler);
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}
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