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1 | /*************************************************************************** |
2 | * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team * | |
3 | * * | |
4 | * This program is free software; you can redistribute it and/or modify * | |
5 | * it under the terms of the GNU General Public License as published by * | |
6 | * the Free Software Foundation; either version 2 of the License, or * | |
7 | * (at your option) any later version. * | |
8 | * * | |
9 | * This program is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU General Public License * | |
15 | * along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | /* | |
21 | * Internal PSX HLE functions. | |
22 | */ | |
23 | ||
24 | #include "psxhle.h" | |
25 | ||
26 | static void hleDummy() { | |
27 | psxRegs.pc = psxRegs.GPR.n.ra; | |
28 | ||
29 | psxBranchTest(); | |
30 | } | |
31 | ||
32 | static void hleA0() { | |
33 | u32 call = psxRegs.GPR.n.t1 & 0xff; | |
34 | ||
35 | if (biosA0[call]) biosA0[call](); | |
36 | ||
37 | psxBranchTest(); | |
38 | } | |
39 | ||
40 | static void hleB0() { | |
41 | u32 call = psxRegs.GPR.n.t1 & 0xff; | |
42 | ||
43 | if (biosB0[call]) biosB0[call](); | |
44 | ||
45 | psxBranchTest(); | |
46 | } | |
47 | ||
48 | static void hleC0() { | |
49 | u32 call = psxRegs.GPR.n.t1 & 0xff; | |
50 | ||
51 | if (biosC0[call]) biosC0[call](); | |
52 | ||
53 | psxBranchTest(); | |
54 | } | |
55 | ||
56 | static void hleBootstrap() { // 0xbfc00000 | |
57 | SysPrintf("hleBootstrap\n"); | |
58 | CheckCdrom(); | |
59 | LoadCdrom(); | |
60 | SysPrintf("CdromLabel: \"%s\": PC = %8.8lx (SP = %8.8lx)\n", CdromLabel, psxRegs.pc, psxRegs.GPR.n.sp); | |
61 | } | |
62 | ||
63 | typedef struct { | |
64 | u32 _pc0; | |
65 | u32 gp0; | |
66 | u32 t_addr; | |
67 | u32 t_size; | |
68 | u32 d_addr; | |
69 | u32 d_size; | |
70 | u32 b_addr; | |
71 | u32 b_size; | |
72 | u32 S_addr; | |
73 | u32 s_size; | |
74 | u32 _sp,_fp,_gp,ret,base; | |
75 | } EXEC; | |
76 | ||
77 | static void hleExecRet() { | |
78 | EXEC *header = (EXEC*)PSXM(psxRegs.GPR.n.s0); | |
79 | ||
80 | SysPrintf("ExecRet %x: %x\n", psxRegs.GPR.n.s0, header->ret); | |
81 | ||
82 | psxRegs.GPR.n.ra = header->ret; | |
83 | psxRegs.GPR.n.sp = header->_sp; | |
84 | psxRegs.GPR.n.s8 = header->_fp; | |
85 | psxRegs.GPR.n.gp = header->_gp; | |
86 | psxRegs.GPR.n.s0 = header->base; | |
87 | ||
88 | psxRegs.GPR.n.v0 = 1; | |
89 | psxRegs.pc = psxRegs.GPR.n.ra; | |
90 | } | |
91 | ||
92 | void (*psxHLEt[256])() = { | |
93 | hleDummy, hleA0, hleB0, hleC0, | |
94 | hleBootstrap, hleExecRet, | |
95 | hleDummy, hleDummy | |
96 | }; |