notaz.gp2x.de / pcsx_rearmed.git / blame
| Commit | Line | Data |
|---|---|---|
| ef79bbde P |
1 | |
| 2 | ||
| 3 | #define OLD_REGISTER_OFFSET (19*4) | |
| 4 | #define SP_SIZE (OLD_REGISTER_OFFSET+4+8) | |
| 5 | ||
| 6 | /*asm void recRun(register void (*func)(), register u32 hw1, register u32 hw2)*/ | |
| 7 | .text | |
| 8 | .align 4 | |
| 9 | .globl recRun | |
| 10 | recRun: | |
| 11 | /* prologue code */ | |
| 12 | mflr r0 | |
| 13 | stmw r13, -(32-13)*4(r1) | |
| 14 | stw r0, 4(r1) | |
| 15 | stwu r1, -((32-13)*4+8)(r1) | |
| 16 | ||
| 17 | /* execute code */ | |
| 18 | mtctr r3 | |
| 19 | mr r31, r4 | |
| 20 | mr r30, r5 | |
| 21 | bctrl | |
| 22 | /* | |
| 23 | } | |
| 24 | asm void returnPC() | |
| 25 | {*/ | |
| 26 | .text | |
| 27 | .align 4 | |
| 28 | .globl returnPC | |
| 29 | returnPC: | |
| 30 | // end code | |
| 31 | lwz r0, (32-13)*4+8+4(r1) | |
| 32 | addi r1, r1, (32-13)*4+8 | |
| 33 | mtlr r0 | |
| 34 | lmw r13, -(32-13)*4(r1) | |
| 35 | blr | |
| 36 | //}*/ | |
| 37 | ||
| 38 | // Memory functions that only works with a linear memory | |
| 39 | ||
| 40 | .text | |
| 41 | .align 4 | |
| 42 | .globl dynMemRead8 | |
| 43 | dynMemRead8: | |
| 44 | // assumes that memory pointer is in r30 | |
| 45 | addis r2,r3,-0x1f80 | |
| 46 | srwi. r4,r2,16 | |
| 47 | bne+ .norm8 | |
| 48 | cmplwi r2,0x1000 | |
| 49 | blt- .norm8 | |
| 50 | b psxHwRead8 | |
| 51 | .norm8: | |
| 52 | clrlwi r5,r3,3 | |
| 53 | lbzx r3,r5,r30 | |
| 54 | blr | |
| 55 | ||
| 56 | .text | |
| 57 | .align 4 | |
| 58 | .globl dynMemRead16 | |
| 59 | dynMemRead16: | |
| 60 | // assumes that memory pointer is in r30 | |
| 61 | addis r2,r3,-0x1f80 | |
| 62 | srwi. r4,r2,16 | |
| 63 | bne+ .norm16 | |
| 64 | cmplwi r2,0x1000 | |
| 65 | blt- .norm16 | |
| 66 | b psxHwRead16 | |
| 67 | .norm16: | |
| 68 | clrlwi r5,r3,3 | |
| 69 | lhbrx r3,r5,r30 | |
| 70 | blr | |
| 71 | ||
| 72 | .text | |
| 73 | .align 4 | |
| 74 | .globl dynMemRead32 | |
| 75 | dynMemRead32: | |
| 76 | // assumes that memory pointer is in r30 | |
| 77 | addis r2,r3,-0x1f80 | |
| 78 | srwi. r4,r2,16 | |
| 79 | bne+ .norm32 | |
| 80 | cmplwi r2,0x1000 | |
| 81 | blt- .norm32 | |
| 82 | b psxHwRead32 | |
| 83 | .norm32: | |
| 84 | clrlwi r5,r3,3 | |
| 85 | lwbrx r3,r5,r30 | |
| 86 | blr | |
| 87 | ||
| 88 | /* | |
| 89 | N P Z | |
| 90 | 0 0 0 X | |
| 91 | - 0 0 1 X | |
| 92 | 1 0 0 X | |
| 93 | 1 0 1 X | |
| 94 | ||
| 95 | P | (!N & Z) | |
| 96 | P | !(N | !Z) | |
| 97 | */ | |
| 98 | ||
| 99 | .text | |
| 100 | .align 4 | |
| 101 | .globl dynMemWrite32 | |
| 102 | dynMemWrite32: | |
| 103 | // assumes that memory pointer is in r30 | |
| 104 | addis r2,r3,-0x1f80 | |
| 105 | srwi. r5,r2,16 | |
| 106 | bne+ .normw32 | |
| 107 | cmplwi r2,0x1000 | |
| 108 | blt .normw32 | |
| 109 | b psxHwWrite32 | |
| 110 | .normw32: | |
| 111 | mtcrf 0xFF, r3 | |
| 112 | clrlwi r5,r3,3 | |
| 113 | crandc 0, 2, 0 | |
| 114 | cror 2, 1, 0 | |
| 115 | bne+ .okw32 | |
| 116 | // write test | |
| 117 | li r2,0x0130 | |
| 118 | addis r2,r2,0xfffe | |
| 119 | cmplw r3,r2 | |
| 120 | bnelr | |
| 121 | .okw32: | |
| 122 | stwbrx r4,r5,r30 | |
| 123 | blr | |
| 124 |