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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1901 | serge | 1 | /* |
| 2 | * Written by José Fonseca |
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| 3 | */ |
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| 4 | |||
| 5 | |||
| 6 | /* |
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| 7 | * void _mesa_mmx_blend( struct gl_context *ctx, |
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| 8 | * GLuint n, |
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| 9 | * const GLubyte mask[], |
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| 10 | * GLchan rgba[][4], |
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| 11 | * CONST GLchan dest[][4] ) |
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| 12 | * |
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| 13 | */ |
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| 14 | ALIGNTEXT16 |
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| 15 | GLOBL GLNAME( TAG(_mesa_mmx_blend) ) |
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| 16 | HIDDEN( TAG(_mesa_mmx_blend) ) |
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| 17 | GLNAME( TAG(_mesa_mmx_blend) ): |
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| 18 | |||
| 19 | PUSH_L ( EBP ) |
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| 20 | MOV_L ( ESP, EBP ) |
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| 21 | PUSH_L ( ESI ) |
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| 22 | PUSH_L ( EDI ) |
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| 23 | PUSH_L ( EBX ) |
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| 24 | |||
| 25 | MOV_L ( REGOFF(12, EBP), ECX ) /* n */ |
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| 26 | CMP_L ( CONST(0), ECX) |
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| 27 | JE ( LLTAG(GMB_return) ) |
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| 28 | |||
| 29 | MOV_L ( REGOFF(16, EBP), EBX ) /* mask */ |
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| 30 | MOV_L ( REGOFF(20, EBP), EDI ) /* rgba */ |
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| 31 | MOV_L ( REGOFF(24, EBP), ESI ) /* dest */ |
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| 32 | |||
| 33 | INIT |
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| 34 | |||
| 35 | TEST_L ( CONST(4), EDI ) /* align rgba on an 8-byte boundary */ |
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| 36 | JZ ( LLTAG(GMB_align_end) ) |
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| 37 | |||
| 38 | CMP_B ( CONST(0), REGIND(EBX) ) /* *mask == 0 */ |
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| 39 | JE ( LLTAG(GMB_align_continue) ) |
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| 40 | |||
| 41 | /* runin */ |
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| 42 | #define ONE(x) x |
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| 43 | #define TWO(x) |
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| 44 | MAIN ( EDI, ESI ) |
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| 45 | #undef ONE |
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| 46 | #undef TWO |
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| 47 | |||
| 48 | LLTAG(GMB_align_continue): |
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| 49 | |||
| 50 | DEC_L ( ECX ) /* n -= 1 */ |
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| 51 | INC_L ( EBX ) /* mask += 1 */ |
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| 52 | ADD_L ( CONST(4), EDI ) /* rgba += 1 */ |
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| 53 | ADD_L ( CONST(4), ESI ) /* dest += 1 */ |
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| 54 | |||
| 55 | LLTAG(GMB_align_end): |
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| 56 | |||
| 57 | CMP_L ( CONST(2), ECX) |
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| 58 | JB ( LLTAG(GMB_loop_end) ) |
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| 59 | |||
| 60 | ALIGNTEXT16 |
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| 61 | LLTAG(GMB_loop_begin): |
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| 62 | |||
| 63 | CMP_W ( CONST(0), REGIND(EBX) ) /* *mask == 0 && *(mask + 1) == 0 */ |
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| 64 | JE ( LLTAG(GMB_loop_continue) ) |
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| 65 | |||
| 66 | /* main loop */ |
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| 67 | #define ONE(x) |
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| 68 | #define TWO(x) x |
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| 69 | MAIN ( EDI, ESI ) |
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| 70 | #undef ONE |
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| 71 | #undef TWO |
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| 72 | |||
| 73 | LLTAG(GMB_loop_continue): |
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| 74 | |||
| 75 | DEC_L ( ECX ) |
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| 76 | DEC_L ( ECX ) /* n -= 2 */ |
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| 77 | ADD_L ( CONST(2), EBX ) /* mask += 2 */ |
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| 78 | ADD_L ( CONST(8), EDI ) /* rgba += 2 */ |
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| 79 | ADD_L ( CONST(8), ESI ) /* dest += 2 */ |
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| 80 | CMP_L ( CONST(2), ECX ) |
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| 81 | JAE ( LLTAG(GMB_loop_begin) ) |
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| 82 | |||
| 83 | LLTAG(GMB_loop_end): |
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| 84 | |||
| 85 | CMP_L ( CONST(1), ECX ) |
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| 86 | JB ( LLTAG(GMB_done) ) |
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| 87 | |||
| 88 | CMP_B ( CONST(0), REGIND(EBX) ) /* *mask == 0 */ |
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| 89 | JE ( LLTAG(GMB_done) ) |
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| 90 | |||
| 91 | /* runout */ |
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| 92 | #define ONE(x) x |
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| 93 | #define TWO(x) |
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| 94 | MAIN ( EDI, ESI ) |
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| 95 | #undef ONE |
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| 96 | #undef TWO |
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| 97 | |||
| 98 | LLTAG(GMB_done): |
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| 99 | |||
| 100 | EMMS |
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| 101 | |||
| 102 | LLTAG(GMB_return): |
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| 103 | |||
| 104 | POP_L ( EBX ) |
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| 105 | POP_L ( EDI ) |
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| 106 | POP_L ( ESI ) |
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| 107 | MOV_L ( EBP, ESP ) |
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| 108 | POP_L ( EBP ) |
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| 109 | RET |
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| 110 | |||
| 111 | #undef TAG |
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| 112 | #undef LLTAG |
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| 113 | #undef INIT |
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| 114 | #undef MAIN |