97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/***************************************************************************
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* Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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/*
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* Internal PSX HLE functions.
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*/
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#include "psxhle.h"
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static void hleDummy() {
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psxRegs.pc = psxRegs.GPR.n.ra;
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psxBranchTest();
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}
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static void hleA0() {
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u32 call = psxRegs.GPR.n.t1 & 0xff;
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if (biosA0[call]) biosA0[call]();
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psxBranchTest();
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}
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static void hleB0() {
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u32 call = psxRegs.GPR.n.t1 & 0xff;
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if (biosB0[call]) biosB0[call]();
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psxBranchTest();
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}
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static void hleC0() {
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u32 call = psxRegs.GPR.n.t1 & 0xff;
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if (biosC0[call]) biosC0[call]();
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psxBranchTest();
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}
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static void hleBootstrap() { // 0xbfc00000
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SysPrintf("hleBootstrap\n");
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CheckCdrom();
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LoadCdrom();
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SysPrintf("CdromLabel: \"%s\": PC = %8.8x (SP = %8.8x)\n", CdromLabel, (unsigned int)psxRegs.pc, (unsigned int)psxRegs.GPR.n.sp);
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}
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typedef struct {
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u32 _pc0;
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u32 gp0;
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u32 t_addr;
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u32 t_size;
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u32 d_addr;
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u32 d_size;
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u32 b_addr;
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u32 b_size;
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u32 S_addr;
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u32 s_size;
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u32 _sp,_fp,_gp,ret,base;
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} EXEC;
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static void hleExecRet() {
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EXEC *header = (EXEC*)PSXM(psxRegs.GPR.n.s0);
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SysPrintf("ExecRet %x: %x\n", psxRegs.GPR.n.s0, header->ret);
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psxRegs.GPR.n.ra = header->ret;
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psxRegs.GPR.n.sp = header->_sp;
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psxRegs.GPR.n.s8 = header->_fp;
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psxRegs.GPR.n.gp = header->_gp;
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psxRegs.GPR.n.s0 = header->base;
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psxRegs.GPR.n.v0 = 1;
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psxRegs.pc = psxRegs.GPR.n.ra;
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}
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void (*psxHLEt[256])() = {
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hleDummy, hleA0, hleB0, hleC0,
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hleBootstrap, hleExecRet,
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hleDummy, hleDummy
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};
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