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1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2011 |
3 | * |
4 | * This work is licensed under the terms of GNU GPL version 2 or later. |
5 | * See the COPYING file in the top-level directory. |
6 | */ |
7 | |
19776aef |
8 | #ifndef DRC_DBG |
9 | |
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10 | static int pcsx_direct_read(int type, u_int addr, int cc_adj, int cc, int rs, int rt) |
11 | { |
12 | if ((addr & 0xfffff000) == 0x1f801000) { |
13 | u_int t; |
14 | switch (addr & 0xffff) { |
15 | case 0x1120: // rcnt2 count |
16 | if (rt < 0) goto dont_care; |
17 | if (cc < 0) return 0; |
18 | emit_readword((int)&rcnts[2].mode, HOST_TEMPREG); |
19 | emit_readword((int)&rcnts[2].cycleStart, rt); |
20 | emit_testimm(HOST_TEMPREG, 0x200); |
21 | emit_readword((int)&last_count, HOST_TEMPREG); |
22 | emit_sub(HOST_TEMPREG, rt, HOST_TEMPREG); |
23 | emit_add(HOST_TEMPREG, cc, HOST_TEMPREG); |
24 | if (cc_adj) |
25 | emit_addimm(HOST_TEMPREG, cc_adj, rt); |
26 | emit_shrne_imm(rt, 3, rt); |
27 | mov_loadtype_adj(type!=LOADW_STUB?type:LOADH_STUB, rt, rt); |
28 | goto hit; |
29 | case 0x1104: |
30 | case 0x1114: |
31 | case 0x1124: // rcnt mode |
32 | if (rt < 0) return 0; |
33 | t = (addr >> 4) & 3; |
34 | emit_readword((int)&rcnts[t].mode, rt); |
35 | emit_andimm(rt, ~0x1800, HOST_TEMPREG); |
36 | emit_writeword(HOST_TEMPREG, (int)&rcnts[t].mode); |
37 | mov_loadtype_adj(type, rt, rt); |
38 | goto hit; |
39 | } |
40 | } |
41 | else { |
42 | if (rt < 0) |
43 | goto dont_care; |
44 | } |
45 | |
46 | return 0; |
47 | |
48 | hit: |
49 | assem_debug("pcsx_direct_read %08x end\n", addr); |
50 | return 1; |
51 | |
52 | dont_care: |
53 | assem_debug("pcsx_direct_read %08x dummy\n", addr); |
54 | return 1; |
55 | } |
56 | |
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57 | #else |
58 | |
59 | static int pcsx_direct_read(int type, u_int addr, int cc_adj, int cc, int rs, int rt) |
60 | { |
61 | return 0; |
62 | } |
63 | |
64 | #endif |
65 | |
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66 | // vim:shiftwidth=2:expandtab |