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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 | |
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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; |
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18 | host_tempreg_acquire(); |
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19 | emit_readword(&rcnts[2].mode, HOST_TEMPREG); |
20 | emit_readword(&rcnts[2].cycleStart, rt); |
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21 | emit_testimm(HOST_TEMPREG, 0x200); |
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22 | emit_readword(&last_count, HOST_TEMPREG); |
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23 | emit_sub(HOST_TEMPREG, rt, HOST_TEMPREG); |
24 | emit_add(HOST_TEMPREG, cc, HOST_TEMPREG); |
25 | if (cc_adj) |
26 | emit_addimm(HOST_TEMPREG, cc_adj, rt); |
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27 | host_tempreg_release(); |
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28 | emit_shrne_imm(rt, 3, rt); |
29 | mov_loadtype_adj(type!=LOADW_STUB?type:LOADH_STUB, rt, rt); |
30 | goto hit; |
31 | case 0x1104: |
32 | case 0x1114: |
33 | case 0x1124: // rcnt mode |
34 | if (rt < 0) return 0; |
35 | t = (addr >> 4) & 3; |
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36 | emit_readword(&rcnts[t].mode, rt); |
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37 | host_tempreg_acquire(); |
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38 | emit_andimm(rt, ~0x1800, HOST_TEMPREG); |
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39 | emit_writeword(HOST_TEMPREG, &rcnts[t].mode); |
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40 | host_tempreg_release(); |
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41 | mov_loadtype_adj(type, rt, rt); |
42 | goto hit; |
43 | } |
44 | } |
45 | else { |
46 | if (rt < 0) |
47 | goto dont_care; |
48 | } |
49 | |
50 | return 0; |
51 | |
52 | hit: |
53 | assem_debug("pcsx_direct_read %08x end\n", addr); |
54 | return 1; |
55 | |
56 | dont_care: |
57 | assem_debug("pcsx_direct_read %08x dummy\n", addr); |
58 | return 1; |
59 | } |
60 | |
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61 | #else |
62 | |
63 | static int pcsx_direct_read(int type, u_int addr, int cc_adj, int cc, int rs, int rt) |
64 | { |
65 | return 0; |
66 | } |
67 | |
68 | #endif |
69 | |
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70 | // vim:shiftwidth=2:expandtab |