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ef79bbde P |
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 | ||
7a8d521f | 26 | #if 0 |
27 | #define PSXHLE_LOG SysPrintf | |
28 | #else | |
29 | #define PSXHLE_LOG(...) | |
30 | #endif | |
31 | ||
ef79bbde | 32 | static void hleDummy() { |
dc4fa8bc | 33 | log_unhandled("hleDummy called @%08x ra=%08x\n", |
34 | psxRegs.pc - 4, psxRegs.GPR.n.ra); | |
ef79bbde | 35 | psxRegs.pc = psxRegs.GPR.n.ra; |
dc4fa8bc | 36 | psxRegs.cycle += 1000; |
ef79bbde P |
37 | |
38 | psxBranchTest(); | |
39 | } | |
40 | ||
41 | static void hleA0() { | |
42 | u32 call = psxRegs.GPR.n.t1 & 0xff; | |
43 | ||
44 | if (biosA0[call]) biosA0[call](); | |
45 | ||
46 | psxBranchTest(); | |
47 | } | |
48 | ||
49 | static void hleB0() { | |
50 | u32 call = psxRegs.GPR.n.t1 & 0xff; | |
51 | ||
52 | if (biosB0[call]) biosB0[call](); | |
53 | ||
54 | psxBranchTest(); | |
55 | } | |
56 | ||
57 | static void hleC0() { | |
58 | u32 call = psxRegs.GPR.n.t1 & 0xff; | |
59 | ||
60 | if (biosC0[call]) biosC0[call](); | |
61 | ||
62 | psxBranchTest(); | |
63 | } | |
64 | ||
65 | static void hleBootstrap() { // 0xbfc00000 | |
7a8d521f | 66 | PSXHLE_LOG("hleBootstrap\n"); |
ef79bbde P |
67 | CheckCdrom(); |
68 | LoadCdrom(); | |
7a8d521f | 69 | PSXHLE_LOG("CdromLabel: \"%s\": PC = %8.8lx (SP = %8.8lx)\n", CdromLabel, psxRegs.pc, psxRegs.GPR.n.sp); |
ef79bbde P |
70 | } |
71 | ||
72 | typedef struct { | |
73 | u32 _pc0; | |
74 | u32 gp0; | |
75 | u32 t_addr; | |
76 | u32 t_size; | |
77 | u32 d_addr; | |
78 | u32 d_size; | |
79 | u32 b_addr; | |
80 | u32 b_size; | |
81 | u32 S_addr; | |
82 | u32 s_size; | |
83 | u32 _sp,_fp,_gp,ret,base; | |
84 | } EXEC; | |
85 | ||
86 | static void hleExecRet() { | |
87 | EXEC *header = (EXEC*)PSXM(psxRegs.GPR.n.s0); | |
88 | ||
7a8d521f | 89 | PSXHLE_LOG("ExecRet %x: %x\n", psxRegs.GPR.n.s0, header->ret); |
ef79bbde | 90 | |
31cd6032 | 91 | psxRegs.GPR.n.ra = SWAP32(header->ret); |
92 | psxRegs.GPR.n.sp = SWAP32(header->_sp); | |
93 | psxRegs.GPR.n.fp = SWAP32(header->_fp); | |
94 | psxRegs.GPR.n.gp = SWAP32(header->_gp); | |
95 | psxRegs.GPR.n.s0 = SWAP32(header->base); | |
ef79bbde P |
96 | |
97 | psxRegs.GPR.n.v0 = 1; | |
98 | psxRegs.pc = psxRegs.GPR.n.ra; | |
99 | } | |
100 | ||
ea72f34a | 101 | void (* const psxHLEt[24])() = { |
ef79bbde | 102 | hleDummy, hleA0, hleB0, hleC0, |
dc4fa8bc | 103 | hleBootstrap, hleExecRet, psxBiosException, hleDummy, |
104 | hleExc0_0_1, hleExc0_0_2, | |
105 | hleExc0_1_1, hleExc0_1_2, hleExc0_2_2_syscall, | |
106 | hleExc1_0_1, hleExc1_0_2, | |
107 | hleExc1_1_1, hleExc1_1_2, | |
108 | hleExc1_2_1, hleExc1_2_2, | |
109 | hleExc1_3_1, hleExc1_3_2, | |
110 | hleExc3_0_2_defint, | |
ea72f34a | 111 | hleExcPadCard1, hleExcPadCard2, |
ef79bbde | 112 | }; |