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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 70 | giacomo | 1 | /* $Id: x86_cliptest.s,v 1.1 2003-03-13 12:11:49 giacomo Exp $ */ |
| 2 | |||
| 3 | /* |
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| 4 | * Mesa 3-D graphics library |
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| 5 | * Version: 3.5 |
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| 6 | * |
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| 7 | * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. |
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| 8 | * |
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 10 | * copy of this software and associated documentation files (the "Software"), |
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| 11 | * to deal in the Software without restriction, including without limitation |
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 14 | * Software is furnished to do so, subject to the following conditions: |
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| 15 | * |
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| 16 | * The above copyright notice and this permission notice shall be included |
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| 17 | * in all copies or substantial portions of the Software. |
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| 18 | * |
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | */ |
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| 26 | |||
| 27 | /* |
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| 28 | * NOTE: Avoid using spaces in between '(' ')' and arguments, especially |
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| 29 | * with macros like CONST, LLBL that expand to CONCAT(...). Putting spaces |
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| 30 | * in there will break the build on some platforms. |
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| 31 | */ |
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| 32 | |||
| 33 | #include "matypes.h" |
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| 34 | #include "clip_args.h" |
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| 35 | |||
| 36 | #define SRC0 REGOFF(0, ESI) |
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| 37 | #define SRC1 REGOFF(4, ESI) |
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| 38 | #define SRC2 REGOFF(8, ESI) |
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| 39 | #define SRC3 REGOFF(12, ESI) |
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| 40 | #define DST0 REGOFF(0, EDI) |
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| 41 | #define DST1 REGOFF(4, EDI) |
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| 42 | #define DST2 REGOFF(8, EDI) |
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| 43 | #define DST3 REGOFF(12, EDI) |
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| 44 | #define MAT0 REGOFF(0, EDX) |
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| 45 | #define MAT1 REGOFF(4, EDX) |
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| 46 | #define MAT2 REGOFF(8, EDX) |
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| 47 | #define MAT3 REGOFF(12, EDX) |
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| 48 | |||
| 49 | |||
| 50 | /* |
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| 51 | * Table for clip test. |
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| 52 | * |
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| 53 | * bit6 = SRC3 < 0 |
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| 54 | * bit5 = SRC2 < 0 |
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| 55 | * bit4 = abs(S(2)) > abs(S(3)) |
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| 56 | * bit3 = SRC1 < 0 |
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| 57 | * bit2 = abs(S(1)) > abs(S(3)) |
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| 58 | * bit1 = SRC0 < 0 |
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| 59 | * bit0 = abs(S(0)) > abs(S(3)) |
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| 60 | */ |
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| 61 | |||
| 62 | SEG_DATA |
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| 63 | |||
| 64 | clip_table: |
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| 65 | D_BYTE 0x00, 0x01, 0x00, 0x02, 0x04, 0x05, 0x04, 0x06 |
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| 66 | D_BYTE 0x00, 0x01, 0x00, 0x02, 0x08, 0x09, 0x08, 0x0a |
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| 67 | D_BYTE 0x20, 0x21, 0x20, 0x22, 0x24, 0x25, 0x24, 0x26 |
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| 68 | D_BYTE 0x20, 0x21, 0x20, 0x22, 0x28, 0x29, 0x28, 0x2a |
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| 69 | D_BYTE 0x00, 0x01, 0x00, 0x02, 0x04, 0x05, 0x04, 0x06 |
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| 70 | D_BYTE 0x00, 0x01, 0x00, 0x02, 0x08, 0x09, 0x08, 0x0a |
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| 71 | D_BYTE 0x10, 0x11, 0x10, 0x12, 0x14, 0x15, 0x14, 0x16 |
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| 72 | D_BYTE 0x10, 0x11, 0x10, 0x12, 0x18, 0x19, 0x18, 0x1a |
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| 73 | D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x37, 0x35, 0x37, 0x36 |
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| 74 | D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x3b, 0x39, 0x3b, 0x3a |
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| 75 | D_BYTE 0x2f, 0x2d, 0x2f, 0x2e, 0x27, 0x25, 0x27, 0x26 |
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| 76 | D_BYTE 0x2f, 0x2d, 0x2f, 0x2e, 0x2b, 0x29, 0x2b, 0x2a |
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| 77 | D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x37, 0x35, 0x37, 0x36 |
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| 78 | D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x3b, 0x39, 0x3b, 0x3a |
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| 79 | D_BYTE 0x1f, 0x1d, 0x1f, 0x1e, 0x17, 0x15, 0x17, 0x16 |
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| 80 | D_BYTE 0x1f, 0x1d, 0x1f, 0x1e, 0x1b, 0x19, 0x1b, 0x1a |
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| 81 | |||
| 82 | |||
| 83 | SEG_TEXT |
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| 84 | |||
| 85 | /* |
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| 86 | * _mesa_x86_cliptest_points4 |
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| 87 | * |
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| 88 | * AL: ormask |
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| 89 | * AH: andmask |
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| 90 | * EBX: temp0 |
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| 91 | * ECX: temp1 |
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| 92 | * EDX: clipmask[] |
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| 93 | * ESI: clip[] |
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| 94 | * EDI: proj[] |
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| 95 | * EBP: temp2 |
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| 96 | */ |
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| 97 | |||
| 98 | #if defined(__ELF__) && defined(__PIC__) && defined(GNU_ASSEMBLER) && !defined(ELFPIC) |
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| 99 | #define ELFPIC |
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| 100 | #endif |
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| 101 | |||
| 102 | ALIGNTEXT16 |
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| 103 | GLOBL GLNAME( _mesa_x86_cliptest_points4 ) |
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| 104 | GLNAME( _mesa_x86_cliptest_points4 ): |
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| 105 | |||
| 106 | #ifdef ELFPIC |
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| 107 | #define FRAME_OFFSET 20 |
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| 108 | #else |
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| 109 | #define FRAME_OFFSET 16 |
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| 110 | #endif |
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| 111 | PUSH_L( ESI ) |
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| 112 | PUSH_L( EDI ) |
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| 113 | PUSH_L( EBP ) |
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| 114 | PUSH_L( EBX ) |
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| 115 | |||
| 116 | #ifdef ELFPIC |
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| 117 | /* store pointer to clip_table on stack */ |
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| 118 | CALL( LLBL(ctp4_get_eip) ) |
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| 119 | ADD_L( CONST(_GLOBAL_OFFSET_TABLE_), EBX ) |
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| 120 | MOV_L( REGOFF(clip_table@GOT, EBX), EBX ) |
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| 121 | PUSH_L( EBX ) |
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| 122 | JMP( LLBL(ctp4_clip_table_ready) ) |
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| 123 | |||
| 124 | LLBL(ctp4_get_eip): |
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| 125 | /* store eip in ebx */ |
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| 126 | MOV_L( REGIND(ESP), EBX ) |
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| 127 | RET |
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| 128 | |||
| 129 | LLBL(ctp4_clip_table_ready): |
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| 130 | #endif |
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| 131 | |||
| 132 | MOV_L( ARG_SOURCE, ESI ) |
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| 133 | MOV_L( ARG_DEST, EDI ) |
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| 134 | |||
| 135 | MOV_L( ARG_CLIP, EDX ) |
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| 136 | MOV_L( ARG_OR, EBX ) |
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| 137 | |||
| 138 | MOV_L( ARG_AND, EBP ) |
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| 139 | MOV_L( REGOFF(V4F_STRIDE, ESI), EAX ) |
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| 140 | |||
| 141 | MOV_L( REGOFF(V4F_COUNT, ESI), ECX ) |
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| 142 | MOV_L( REGOFF(V4F_START, ESI), ESI ) |
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| 143 | |||
| 144 | OR_L( CONST(VEC_SIZE_4), REGOFF(V4F_FLAGS, EDI) ) |
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| 145 | MOV_L( EAX, ARG_SOURCE ) /* put stride in ARG_SOURCE */ |
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| 146 | |||
| 147 | MOV_L( CONST(4), REGOFF(V4F_SIZE, EDI) ) |
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| 148 | MOV_L( ECX, REGOFF(V4F_COUNT, EDI) ) |
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| 149 | |||
| 150 | MOV_L( REGOFF(V4F_START, EDI), EDI ) |
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| 151 | ADD_L( EDX, ECX ) |
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| 152 | |||
| 153 | MOV_L( ECX, ARG_CLIP ) /* put clipmask + count in ARG_CLIP */ |
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| 154 | CMP_L( ECX, EDX ) |
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| 155 | |||
| 156 | MOV_B( REGIND(EBX), AL ) |
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| 157 | MOV_B( REGIND(EBP), AH ) |
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| 158 | |||
| 159 | JZ( LLBL(ctp4_finish) ) |
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| 160 | |||
| 161 | ALIGNTEXT16 |
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| 162 | LLBL(ctp4_top): |
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| 163 | |||
| 164 | FLD1 /* F3 */ |
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| 165 | FDIV_S( SRC3 ) /* GH: don't care about div-by-zero */ |
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| 166 | |||
| 167 | MOV_L( SRC3, EBP ) |
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| 168 | MOV_L( SRC2, EBX ) |
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| 169 | |||
| 170 | XOR_L( ECX, ECX ) |
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| 171 | ADD_L( EBP, EBP ) /* ebp = abs(S(3))*2 ; carry = sign of S(3) */ |
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| 172 | |||
| 173 | ADC_L( ECX, ECX ) |
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| 174 | ADD_L( EBX, EBX ) /* ebx = abs(S(2))*2 ; carry = sign of S(2) */ |
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| 175 | |||
| 176 | ADC_L( ECX, ECX ) |
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| 177 | CMP_L( EBX, EBP ) /* carry = abs(S(2))*2 > abs(S(3))*2 */ |
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| 178 | |||
| 179 | ADC_L( ECX, ECX ) |
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| 180 | MOV_L( SRC1, EBX ) |
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| 181 | |||
| 182 | ADD_L( EBX, EBX ) /* ebx = abs(S(1))*2 ; carry = sign of S(1) */ |
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| 183 | |||
| 184 | ADC_L( ECX, ECX ) |
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| 185 | CMP_L( EBX, EBP ) /* carry = abs(S(1))*2 > abs(S(3))*2 */ |
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| 186 | |||
| 187 | ADC_L( ECX, ECX ) |
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| 188 | MOV_L( SRC0, EBX ) |
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| 189 | |||
| 190 | ADD_L( EBX, EBX ) /* ebx = abs(S(0))*2 ; carry = sign of S(0) */ |
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| 191 | |||
| 192 | ADC_L( ECX, ECX ) |
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| 193 | CMP_L( EBX, EBP ) /* carry = abs(S(0))*2 > abs(S(3))*2 */ |
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| 194 | |||
| 195 | ADC_L( ECX, ECX ) |
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| 196 | |||
| 197 | #ifdef ELFPIC |
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| 198 | MOV_L( REGIND(ESP), EBP ) /* clip_table */ |
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| 199 | |||
| 200 | MOV_B( REGBI(EBP, ECX), CL ) |
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| 201 | #else |
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| 202 | MOV_B( REGOFF(clip_table,ECX), CL ) |
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| 203 | #endif |
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| 204 | |||
| 205 | OR_B( CL, AL ) |
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| 206 | AND_B( CL, AH ) |
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| 207 | |||
| 208 | TEST_B( CL, CL ) |
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| 209 | MOV_B( CL, REGIND(EDX) ) |
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| 210 | |||
| 211 | JZ( LLBL(ctp4_proj) ) |
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| 212 | |||
| 213 | LLBL(ctp4_noproj): |
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| 214 | |||
| 215 | FSTP( ST(0) ) /* */ |
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| 216 | |||
| 217 | MOV_L( CONST(0), DST0 ) |
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| 218 | MOV_L( CONST(0), DST1 ) |
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| 219 | MOV_L( CONST(0), DST2 ) |
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| 220 | MOV_L( CONST(0x3f800000), DST3 ) |
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| 221 | |||
| 222 | JMP( LLBL(ctp4_next) ) |
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| 223 | |||
| 224 | LLBL(ctp4_proj): |
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| 225 | |||
| 226 | FLD_S( SRC0 ) /* F0 F3 */ |
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| 227 | FMUL2( ST(1), ST0 ) |
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| 228 | |||
| 229 | FLD_S( SRC1 ) /* F1 F0 F3 */ |
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| 230 | FMUL2( ST(2), ST0 ) |
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| 231 | |||
| 232 | FLD_S( SRC2 ) /* F2 F1 F0 F3 */ |
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| 233 | FMUL2( ST(3), ST0 ) |
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| 234 | |||
| 235 | FXCH( ST(2) ) /* F0 F1 F2 F3 */ |
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| 236 | FSTP_S( DST0 ) /* F1 F2 F3 */ |
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| 237 | FSTP_S( DST1 ) /* F2 F3 */ |
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| 238 | FSTP_S( DST2 ) /* F3 */ |
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| 239 | FSTP_S( DST3 ) /* */ |
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| 240 | |||
| 241 | LLBL(ctp4_next): |
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| 242 | |||
| 243 | INC_L( EDX ) |
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| 244 | ADD_L( CONST(16), EDI ) |
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| 245 | |||
| 246 | ADD_L( ARG_SOURCE, ESI ) |
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| 247 | CMP_L( EDX, ARG_CLIP ) |
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| 248 | |||
| 249 | JNZ( LLBL(ctp4_top) ) |
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| 250 | |||
| 251 | MOV_L( ARG_OR, ECX ) |
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| 252 | MOV_L( ARG_AND, EDX ) |
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| 253 | |||
| 254 | MOV_B( AL, REGIND(ECX) ) |
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| 255 | MOV_B( AH, REGIND(EDX) ) |
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| 256 | |||
| 257 | LLBL(ctp4_finish): |
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| 258 | |||
| 259 | MOV_L( ARG_DEST, EAX ) |
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| 260 | #ifdef ELFPIC |
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| 261 | POP_L( ESI ) /* discard ptr to clip_table */ |
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| 262 | #endif |
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| 263 | POP_L( EBX ) |
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| 264 | POP_L( EBP ) |
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| 265 | POP_L( EDI ) |
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| 266 | POP_L( ESI ) |
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| 267 | |||
| 268 | RET |
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| 269 | |||
| 270 | |||
| 271 | |||
| 272 | |||
| 273 | |||
| 274 | |||
| 275 | |||
| 276 | ALIGNTEXT16 |
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| 277 | GLOBL GLNAME( _mesa_x86_cliptest_points4_np ) |
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| 278 | GLNAME( _mesa_x86_cliptest_points4_np ): |
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| 279 | |||
| 280 | #ifdef ELFPIC |
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| 281 | #define FRAME_OFFSET 20 |
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| 282 | #else |
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| 283 | #define FRAME_OFFSET 16 |
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| 284 | #endif |
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| 285 | PUSH_L( ESI ) |
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| 286 | PUSH_L( EDI ) |
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| 287 | PUSH_L( EBP ) |
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| 288 | PUSH_L( EBX ) |
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| 289 | |||
| 290 | #ifdef ELFPIC |
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| 291 | /* store pointer to clip_table on stack */ |
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| 292 | CALL( LLBL(ctp4_np_get_eip) ) |
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| 293 | ADD_L( CONST(_GLOBAL_OFFSET_TABLE_), EBX ) |
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| 294 | MOV_L( REGOFF(clip_table@GOT, EBX), EBX ) |
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| 295 | PUSH_L( EBX ) |
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| 296 | JMP( LLBL(ctp4_np_clip_table_ready) ) |
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| 297 | |||
| 298 | LLBL(ctp4_np_get_eip): |
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| 299 | /* store eip in ebx */ |
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| 300 | MOV_L( REGIND(ESP), EBX ) |
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| 301 | RET |
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| 302 | |||
| 303 | LLBL(ctp4_np_clip_table_ready): |
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| 304 | #endif |
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| 305 | |||
| 306 | MOV_L( ARG_SOURCE, ESI ) |
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| 307 | /* slot */ |
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| 308 | |||
| 309 | MOV_L( ARG_CLIP, EDX ) |
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| 310 | MOV_L( ARG_OR, EBX ) |
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| 311 | |||
| 312 | MOV_L( ARG_AND, EBP ) |
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| 313 | MOV_L( REGOFF(V4F_STRIDE, ESI), EAX ) |
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| 314 | |||
| 315 | MOV_L( REGOFF(V4F_COUNT, ESI), ECX ) |
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| 316 | MOV_L( REGOFF(V4F_START, ESI), ESI ) |
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| 317 | |||
| 318 | MOV_L( EAX, ARG_DEST ) /* put stride in ARG_DEST */ |
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| 319 | ADD_L( EDX, ECX ) |
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| 320 | |||
| 321 | MOV_L( ECX, EDI ) /* put clipmask + count in EDI */ |
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| 322 | CMP_L( ECX, EDX ) |
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| 323 | |||
| 324 | MOV_B( REGIND(EBX), AL ) |
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| 325 | MOV_B( REGIND(EBP), AH ) |
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| 326 | |||
| 327 | JZ( LLBL(ctp4_np_finish) ) |
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| 328 | |||
| 329 | ALIGNTEXT16 |
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| 330 | LLBL(ctp4_np_top): |
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| 331 | |||
| 332 | MOV_L( SRC3, EBP ) |
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| 333 | MOV_L( SRC2, EBX ) |
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| 334 | |||
| 335 | XOR_L( ECX, ECX ) |
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| 336 | ADD_L( EBP, EBP ) /* ebp = abs(S(3))*2 ; carry = sign of S(3) */ |
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| 337 | |||
| 338 | ADC_L( ECX, ECX ) |
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| 339 | ADD_L( EBX, EBX ) /* ebx = abs(S(2))*2 ; carry = sign of S(2) */ |
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| 340 | |||
| 341 | ADC_L( ECX, ECX ) |
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| 342 | CMP_L( EBX, EBP ) /* carry = abs(S(2))*2 > abs(S(3))*2 */ |
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| 343 | |||
| 344 | ADC_L( ECX, ECX ) |
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| 345 | MOV_L( SRC1, EBX ) |
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| 346 | |||
| 347 | ADD_L( EBX, EBX ) /* ebx = abs(S(1))*2 ; carry = sign of S(1) */ |
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| 348 | |||
| 349 | ADC_L( ECX, ECX ) |
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| 350 | CMP_L( EBX, EBP ) /* carry = abs(S(1))*2 > abs(S(3))*2 */ |
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| 351 | |||
| 352 | ADC_L( ECX, ECX ) |
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| 353 | MOV_L( SRC0, EBX ) |
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| 354 | |||
| 355 | ADD_L( EBX, EBX ) /* ebx = abs(S(0))*2 ; carry = sign of S(0) */ |
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| 356 | |||
| 357 | ADC_L( ECX, ECX ) |
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| 358 | CMP_L( EBX, EBP ) /* carry = abs(S(0))*2 > abs(S(3))*2 */ |
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| 359 | |||
| 360 | ADC_L( ECX, ECX ) |
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| 361 | |||
| 362 | #ifdef ELFPIC |
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| 363 | MOV_L( REGIND(ESP), EBP ) /* clip_table */ |
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| 364 | |||
| 365 | MOV_B( REGBI(EBP, ECX), CL ) |
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| 366 | #else |
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| 367 | MOV_B( REGOFF(clip_table,ECX), CL ) |
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| 368 | #endif |
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| 369 | |||
| 370 | OR_B( CL, AL ) |
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| 371 | AND_B( CL, AH ) |
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| 372 | |||
| 373 | TEST_B( CL, CL ) |
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| 374 | MOV_B( CL, REGIND(EDX) ) |
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| 375 | |||
| 376 | INC_L( EDX ) |
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| 377 | /* slot */ |
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| 378 | |||
| 379 | ADD_L( ARG_DEST, ESI ) |
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| 380 | CMP_L( EDX, EDI ) |
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| 381 | |||
| 382 | JNZ( LLBL(ctp4_np_top) ) |
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| 383 | |||
| 384 | MOV_L( ARG_OR, ECX ) |
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| 385 | MOV_L( ARG_AND, EDX ) |
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| 386 | |||
| 387 | MOV_B( AL, REGIND(ECX) ) |
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| 388 | MOV_B( AH, REGIND(EDX) ) |
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| 389 | |||
| 390 | LLBL(ctp4_np_finish): |
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| 391 | |||
| 392 | MOV_L( ARG_SOURCE, EAX ) |
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| 393 | #ifdef ELFPIC |
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| 394 | POP_L( ESI ) /* discard ptr to clip_table */ |
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| 395 | #endif |
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| 396 | POP_L( EBX ) |
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| 397 | POP_L( EBP ) |
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| 398 | POP_L( EDI ) |
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| 399 | POP_L( ESI ) |
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| 400 | |||
| 401 | RET |