19fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream/* 29fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamCopyright (C) 1996-1997 Id Software, Inc. 39fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 49fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamThis program is free software; you can redistribute it and/or 59fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreammodify it under the terms of the GNU General Public License 69fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamas published by the Free Software Foundation; either version 2 79fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamof the License, or (at your option) any later version. 89fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 99fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamThis program is distributed in the hope that it will be useful, 109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreambut WITHOUT ANY WARRANTY; without even the implied warranty of 119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSee the GNU General Public License for more details. 149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamYou should have received a copy of the GNU General Public License 169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamalong with this program; if not, write to the Free Software 179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamFoundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream*/ 209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// d_spr8.s 229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// x86 assembly-language horizontal 8-bpp transparent span-drawing code. 239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream#include "asm_i386.h" 269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream#include "quakeasm.h" 279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream#include "asm_draw.h" 289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream#if id386 309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------------------------------------- 329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 8-bpp horizontal span drawing code for polygons, with transparency. 339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------------------------------------- 349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream .text 369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// out-of-line, rarely-needed clamping code 389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHigh0: 409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextents),%esi 419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry0 429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHighOrLow0: 439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jg LClampHigh0 449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream xorl %esi,%esi 459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry0 469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHigh1: 489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextentt),%edx 499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry1 509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHighOrLow1: 519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jg LClampHigh1 529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream xorl %edx,%edx 539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry1 549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampLow2: 569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl $2048,%ebp 579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry2 589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHigh2: 599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextents),%ebp 609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry2 619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampLow3: 639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl $2048,%ecx 649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry3 659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHigh3: 669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextentt),%ecx 679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry3 689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampLow4: 709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl $2048,%eax 719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry4 729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHigh4: 739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextents),%eax 749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry4 759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampLow5: 779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl $2048,%ebx 789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry5 799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampHigh5: 809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextentt),%ebx 819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LClampReentry5 829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream#define pspans 4+16 859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream .align 4 879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl C(D_SpriteDrawSpans) 889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamC(D_SpriteDrawSpans): 899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %ebp // preserve caller's stack frame 909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %edi 919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %esi // preserve register variables 929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %ebx 939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// set up scaled-by-8 steps, for 8-long segments; also set up cacheblock 969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// and span list pointers, and 1/z step in 0.32 fixed-point 979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// FIXME: any overlap from rearranging? 999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_sdivzstepu) 1009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls fp_8 1019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(cacheblock),%edx 1029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_tdivzstepu) 1039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls fp_8 1049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl pspans(%esp),%ebx // point to the first span descriptor 1059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_zistepu) 1069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls fp_8 1079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,pbase // pbase = cacheblock 1089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_zistepu) 1099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls fp_64kx64k 1109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(3) 1119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fstps sdivz8stepu 1129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fstps zi8stepu 1139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fstps tdivz8stepu 1149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl izistep 1159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl izistep,%eax 1169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream rorl $16,%eax // put upper 16 bits in low word 1179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sspan_t_count(%ebx),%ecx 1189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,izistep 1199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $0,%ecx 1219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jle LNextSpan 1229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLSpanLoop: 1249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 1269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// set up the initial s/z, t/z, and 1/z on the FP stack, and generate the 1279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// initial s and t values 1289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 1299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// FIXME: pipeline FILD? 1309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fildl sspan_t_v(%ebx) 1319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fildl sspan_t_u(%ebx) 1329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(1) // dv | du | dv 1349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_sdivzstepv) // dv*d_sdivzstepv | du | dv 1359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(1) // du | dv*d_sdivzstepv | du | dv 1369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_sdivzstepu) // du*d_sdivzstepu | dv*d_sdivzstepv | du | dv 1379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(2) // du | du*d_sdivzstepu | dv*d_sdivzstepv | du | dv 1389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_tdivzstepu) // du*d_tdivzstepu | du*d_sdivzstepu | 1399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // dv*d_sdivzstepv | du | dv 1409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // du*d_sdivzstepu | du*d_tdivzstepu | 1419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // dv*d_sdivzstepv | du | dv 1429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(2) // du*d_tdivzstepu | 1439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_sdivzstepu + dv*d_sdivzstepv | du | dv 1449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // du*d_sdivzstepu + dv*d_sdivzstepv | 1459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_tdivzstepu | du | dv 1469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(3) // dv | du*d_sdivzstepu + dv*d_sdivzstepv | 1479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_tdivzstepu | du | dv 1489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_tdivzstepv) // dv*d_tdivzstepv | 1499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_sdivzstepu + dv*d_sdivzstepv | 1509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_tdivzstepu | du | dv 1519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // du*d_sdivzstepu + dv*d_sdivzstepv | 1529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // dv*d_tdivzstepv | du*d_tdivzstepu | du | dv 1539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fadds C(d_sdivzorigin) // sdivz = d_sdivzorigin + dv*d_sdivzstepv + 1549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_sdivzstepu; stays in %st(2) at end 1559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(4) // dv | dv*d_tdivzstepv | du*d_tdivzstepu | du | 1569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // s/z 1579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_zistepv) // dv*d_zistepv | dv*d_tdivzstepv | 1589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_tdivzstepu | du | s/z 1599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // dv*d_tdivzstepv | dv*d_zistepv | 1609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_tdivzstepu | du | s/z 1619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(2) // dv*d_zistepv | 1629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // dv*d_tdivzstepv + du*d_tdivzstepu | du | s/z 1639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(2) // du | dv*d_tdivzstepv + du*d_tdivzstepu | 1649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // dv*d_zistepv | s/z 1659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_zistepu) // du*d_zistepu | 1669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // dv*d_tdivzstepv + du*d_tdivzstepu | 1679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // dv*d_zistepv | s/z 1689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // dv*d_tdivzstepv + du*d_tdivzstepu | 1699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_zistepu | dv*d_zistepv | s/z 1709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fadds C(d_tdivzorigin) // tdivz = d_tdivzorigin + dv*d_tdivzstepv + 1719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_tdivzstepu; stays in %st(1) at end 1729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(2) // dv*d_zistepv | du*d_zistepu | t/z | s/z 1739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(1) // dv*d_zistepv + du*d_zistepu | t/z | s/z 1749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds fp_64k // fp_64k | dv*d_zistepv + du*d_zistepu | t/z | s/z 1769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // dv*d_zistepv + du*d_zistepu | fp_64k | t/z | s/z 1779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fadds C(d_ziorigin) // zi = d_ziorigin + dv*d_zistepv + 1789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // du*d_zistepu; stays in %st(0) at end 1799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // 1/z | fp_64k | t/z | s/z 1809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(0) // FIXME: get rid of stall on FMUL? 1829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls fp_64kx64k 1839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) 1849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 1869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// calculate and clamp s & t 1879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 1889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fdivr %st(0),%st(2) // 1/z | z*64k | t/z | s/z 1899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) 1909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl izi // 0.32 fixed-point 1/z 1929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl izi,%ebp 1939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 1949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 1959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// set pz to point to the first z-buffer pixel in the span 1969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 1979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream rorl $16,%ebp // put upper 16 bits in low word 1989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sspan_t_v(%ebx),%eax 1999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebp,izi 2009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sspan_t_u(%ebx),%ebp 2019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream imull C(d_zrowbytes) 2029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream shll $1,%ebp // a word per pixel 2039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl C(d_pzbuffer),%eax 2049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ebp,%eax 2059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,pz 2069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 2089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// point %edi to the first pixel in the span 2099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 2109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(d_viewbuffer),%ebp 2119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sspan_t_v(%ebx),%eax 2129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %ebx // preserve spans pointer 2139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(tadjust),%edx 2149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(sadjust),%esi 2159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(d_scantable)(,%eax,4),%edi // v * screenwidth 2169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ebp,%edi 2179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sspan_t_u(%ebx),%ebp 2189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ebp,%edi // pdest = &pdestspan[scans->u]; 2199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 2219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// now start the FDIV for the end of the span 2229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 2239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $8,%ecx 2249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LSetupNotLast1 2259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream decl %ecx 2279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz LCleanup1 // if only one pixel, no need to start an FDIV 2289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ecx,spancountminus1 2299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// finish up the s and t calcs 2319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // z*64k | 1/z | t/z | s/z 2329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z 2349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z 2359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // z*64k | s | 1/z | t/z | s/z 2369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z 2379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // s | t | 1/z | t/z | s/z 2389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl s // 1/z | t | t/z | s/z 2399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl t // 1/z | t/z | s/z 2409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fildl spancountminus1 2429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_tdivzstepu) // _d_tdivzstepu | spancountminus1 2449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_zistepu) // _d_zistepu | _d_tdivzstepu | spancountminus1 2459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(2),%st(0) // _d_zistepu*scm1 | _d_tdivzstepu | scm1 2469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // _d_tdivzstepu | _d_zistepu*scm1 | scm1 2479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(2),%st(0) // _d_tdivzstepu*scm1 | _d_zistepu*scm1 | scm1 2489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(2) // scm1 | _d_zistepu*scm1 | _d_tdivzstepu*scm1 2499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_sdivzstepu) // _d_sdivzstepu*scm1 | _d_zistepu*scm1 | 2509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // _d_tdivzstepu*scm1 2519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // _d_zistepu*scm1 | _d_sdivzstepu*scm1 | 2529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // _d_tdivzstepu*scm1 2539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(3) // _d_sdivzstepu*scm1 | _d_tdivzstepu*scm1 2549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // _d_tdivzstepu*scm1 | _d_sdivzstepu*scm1 2559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(3) // _d_sdivzstepu*scm1 2569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(3) 2579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds fp_64k 2599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fdiv %st(1),%st(0) // this is what we've gone to all this trouble to 2609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // overlap 2619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LFDIVInFlight1 2629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLCleanup1: 2649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// finish up the s and t calcs 2659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // z*64k | 1/z | t/z | s/z 2669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z 2689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z 2699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // z*64k | s | 1/z | t/z | s/z 2709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z 2719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // s | t | 1/z | t/z | s/z 2729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl s // 1/z | t | t/z | s/z 2739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl t // 1/z | t/z | s/z 2749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LFDIVInFlight1 2759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream .align 4 2779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLSetupNotLast1: 2789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// finish up the s and t calcs 2799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // z*64k | 1/z | t/z | s/z 2809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(0) // z*64k | z*64k | 1/z | t/z | s/z 2829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(4),%st(0) // s | z*64k | 1/z | t/z | s/z 2839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // z*64k | s | 1/z | t/z | s/z 2849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(3),%st(0) // t | s | 1/z | t/z | s/z 2859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // s | t | 1/z | t/z | s/z 2869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl s // 1/z | t | t/z | s/z 2879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl t // 1/z | t/z | s/z 2889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 2899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fadds zi8stepu 2909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(2) 2919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fadds sdivz8stepu 2929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(2) 2939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds tdivz8stepu 2949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(2) 2959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds fp_64k 2969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fdiv %st(1),%st(0) // z = 1/1/z 2979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // this is what we've gone to all this trouble to 2989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // overlap 2999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLFDIVInFlight1: 3009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl s,%esi 3029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl t,%edx 3039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextents),%ebx 3049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextentt),%ebp 3059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl %ebx,%esi 3069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LClampHighOrLow0 3079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampReentry0: 3089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %esi,s 3099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl pbase,%ebx 3109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream shll $16,%esi 3119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl %ebp,%edx 3129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %esi,sfracf 3139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LClampHighOrLow1 3149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampReentry1: 3159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,t 3169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl s,%esi // sfrac = scans->sfrac; 3179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream shll $16,%edx 3189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl t,%eax // tfrac = scans->tfrac; 3199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sarl $16,%esi 3209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,tfracf 3219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// calculate the texture starting address 3249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sarl $16,%eax 3269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ebx,%esi 3279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream imull C(cachewidth),%eax // (tfrac >> 16) * cachewidth 3289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %eax,%esi // psource = pbase + (sfrac >> 16) + 3299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // ((tfrac >> 16) * cachewidth); 3309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// determine whether last span or not 3339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $8,%ecx 3359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jna LLastSegment 3369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// not the last segment; do full 8-wide segment 3399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLNotLastSegment: 3419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// advance s/z, t/z, and 1/z, and calculate s & t at end of span and steps to 3449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// get there 3459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// pick up after the FDIV that was left in flight previously 3489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(0) // duplicate it 3509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(4),%st(0) // s = s/z * z 3519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) 3529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(3),%st(0) // t = t/z * z 3539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) 3549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl snext 3559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl tnext 3569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl snext,%eax 3579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl tnext,%edx 3589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $8,%ecx // count off this segments' pixels 3609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(sadjust),%ebp 3619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %ecx // remember count of remaining pixels 3629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(tadjust),%ecx 3639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %eax,%ebp 3659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %edx,%ecx 3669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextents),%eax 3689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextentt),%edx 3699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $2048,%ebp 3719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl LClampLow2 3729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl %eax,%ebp 3739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LClampHigh2 3749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampReentry2: 3759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $2048,%ecx 3779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl LClampLow3 3789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl %edx,%ecx 3799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LClampHigh3 3809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampReentry3: 3819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebp,snext 3839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ecx,tnext 3849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl s,%ebp 3869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl t,%ecx 3879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 3889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// set up advancetable 3909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 3919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ecx,%eax 3929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebp,%edx 3939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sarl $19,%edx // sstep >>= 16; 3949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(cachewidth),%ebx 3959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sarl $19,%eax // tstep >>= 16; 3969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz LIsZero 3979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream imull %ebx,%eax // (tstep >> 16) * cachewidth; 3989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLIsZero: 3999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %edx,%eax // add in sstep 4009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // (tstep >> 16) * cachewidth + (sstep >> 16); 4019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl tfracf,%edx 4029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,advancetable+4 // advance base in t 4039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ebx,%eax // ((tstep >> 16) + 1) * cachewidth + 4049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // (sstep >> 16); 4059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream shll $13,%ebp // left-justify sstep fractional part 4069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebp,sstep 4079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sfracf,%ebx 4089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream shll $13,%ecx // left-justify tstep fractional part 4099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,advancetable // advance extra in t 4109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ecx,tstep 4119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl pz,%ecx 4139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl izi,%ebp 4149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw (%ecx),%bp 4169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp1 4179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al // get first source texel 4189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 4199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp1 4209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,(%ecx) 4219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,(%edi) // store first dest pixel 4229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp1: 4239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 4249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 4259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx // advance tfrac fractional part by tstep frac 4269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax // turn tstep carry into -1 (0 if none) 4289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx // advance sfrac fractional part by sstep frac 4299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi // point to next source texel 4309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 2(%ecx),%bp 4329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp2 4339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 4349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 4359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp2 4369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,2(%ecx) 4379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,1(%edi) 4389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp2: 4399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 4409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 4419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 4429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 4439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 4449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 4459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 4(%ecx),%bp 4479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp3 4489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 4499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 4509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp3 4519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,4(%ecx) 4529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,2(%edi) 4539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp3: 4549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 4559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 4569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 4579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 4589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 4599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 4609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 6(%ecx),%bp 4629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp4 4639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 4649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 4659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp4 4669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,6(%ecx) 4679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,3(%edi) 4689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp4: 4699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 4709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 4719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 4729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 4739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 4749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 4759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 8(%ecx),%bp 4779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp5 4789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 4799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 4809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp5 4819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,8(%ecx) 4829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,4(%edi) 4839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp5: 4849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 4859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 4869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 4879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 4889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 4899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 4909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 4929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// start FDIV for end of next segment in flight, so it can overlap 4939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 4949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream popl %eax 4959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $8,%eax // more than one segment after this? 4969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LSetupNotLast2 // yes 4979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 4989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream decl %eax 4999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz LFDIVInFlight2 // if only one pixel, no need to start an FDIV 5009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,spancountminus1 5019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fildl spancountminus1 5029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_zistepu) // _d_zistepu | spancountminus1 5049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(1),%st(0) // _d_zistepu*scm1 | scm1 5059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds C(d_tdivzstepu) // _d_tdivzstepu | _d_zistepu*scm1 | scm1 5069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(2),%st(0) // _d_tdivzstepu*scm1 | _d_zistepu*scm1 | scm1 5079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // _d_zistepu*scm1 | _d_tdivzstepu*scm1 | scm1 5089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(3) // _d_tdivzstepu*scm1 | scm1 5099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // scm1 | _d_tdivzstepu*scm1 5109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmuls C(d_sdivzstepu) // _d_sdivzstepu*scm1 | _d_tdivzstepu*scm1 5119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // _d_tdivzstepu*scm1 | _d_sdivzstepu*scm1 5129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(3) // _d_sdivzstepu*scm1 5139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds fp_64k // 64k | _d_sdivzstepu*scm1 5149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) // _d_sdivzstepu*scm1 | 64k 5159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(4) // 64k 5169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fdiv %st(1),%st(0) // this is what we've gone to all this trouble to 5189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // overlap 5199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LFDIVInFlight2 5209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream .align 4 5229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLSetupNotLast2: 5239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fadds zi8stepu 5249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(2) 5259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fadds sdivz8stepu 5269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(2) 5279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds tdivz8stepu 5289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream faddp %st(0),%st(2) 5299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream flds fp_64k 5309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fdiv %st(1),%st(0) // z = 1/1/z 5319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // this is what we've gone to all this trouble to 5329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // overlap 5339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLFDIVInFlight2: 5349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %eax 5359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 10(%ecx),%bp 5379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp6 5389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 5399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 5409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp6 5419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,10(%ecx) 5429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,5(%edi) 5439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp6: 5449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 5459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 5469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 5479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 5489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 5499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 5509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 12(%ecx),%bp 5529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp7 5539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 5549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 5559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp7 5569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,12(%ecx) 5579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,6(%edi) 5589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp7: 5599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 5609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 5619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 5629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 5639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 5649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 5659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 14(%ecx),%bp 5679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp8 5689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 5699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 5709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp8 5719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,14(%ecx) 5729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,7(%edi) 5739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp8: 5749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 5759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 5769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 5779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 5789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 5799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 5809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl $8,%edi 5829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl $16,%ecx 5839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,tfracf 5849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl snext,%edx 5859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebx,sfracf 5869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl tnext,%ebx 5879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,s 5889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebx,t 5899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ecx,pz 5919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebp,izi 5929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream popl %ecx // retrieve count 5949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 5959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 5969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// determine whether last span or not 5979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 5989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $8,%ecx // are there multiple segments remaining? 5999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LNotLastSegment // yes 6009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 6029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// last segment of scan 6039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 6049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLLastSegment: 6059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 6079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// advance s/z, t/z, and 1/z, and calculate s & t at end of span and steps to 6089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// get there. The number of pixels left is variable, and we want to land on the 6099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// last pixel, not step one past it, so we can't run into arithmetic problems 6109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 6119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream testl %ecx,%ecx 6129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz LNoSteps // just draw the last pixel and we're done 6139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// pick up after the FDIV that was left in flight previously 6159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fld %st(0) // duplicate it 6189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(4),%st(0) // s = s/z * z 6199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) 6209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fmul %st(3),%st(0) // t = t/z * z 6219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fxch %st(1) 6229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl snext 6239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fistpl tnext 6249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(tadjust),%ebx 6269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(sadjust),%eax 6279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl snext,%eax 6299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tnext,%ebx 6309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextents),%ebp 6329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(bbextentt),%edx 6339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $2048,%eax 6359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl LClampLow4 6369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl %ebp,%eax 6379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LClampHigh4 6389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampReentry4: 6399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,snext 6409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $2048,%ebx 6429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl LClampLow5 6439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl %edx,%ebx 6449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ja LClampHigh5 6459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLClampReentry5: 6469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $1,%ecx // don't bother 6489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream je LOnlyOneStep // if two pixels in segment, there's only one step, 6499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // of the segment length 6509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl s,%eax 6519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl t,%ebx 6529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %eax,%eax // convert to 15.17 format so multiply by 1.31 6549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ebx,%ebx // reciprocal yields 16.48 6559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream imull reciprocal_table-8(,%ecx,4) // sstep = (snext - s) / (spancount-1) 6569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,%ebp 6579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebx,%eax 6599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream imull reciprocal_table-8(,%ecx,4) // tstep = (tnext - t) / (spancount-1) 6609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLSetEntryvec: 6629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 6639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// set up advancetable 6649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 6659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl spr8entryvec_table(,%ecx,4),%ebx 6669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,%eax 6679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream pushl %ebx // entry point into code for RET later 6689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebp,%ecx 6699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sarl $16,%ecx // sstep >>= 16; 6709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl C(cachewidth),%ebx 6719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sarl $16,%edx // tstep >>= 16; 6729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz LIsZeroLast 6739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream imull %ebx,%edx // (tstep >> 16) * cachewidth; 6749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLIsZeroLast: 6759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ecx,%edx // add in sstep 6769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // (tstep >> 16) * cachewidth + (sstep >> 16); 6779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl tfracf,%ecx 6789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,advancetable+4 // advance base in t 6799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl %ebx,%edx // ((tstep >> 16) + 1) * cachewidth + 6809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream // (sstep >> 16); 6819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream shll $16,%ebp // left-justify sstep fractional part 6829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sfracf,%ebx 6839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream shll $16,%eax // left-justify tstep fractional part 6849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %edx,advancetable // advance extra in t 6859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,tstep 6879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebp,sstep 6889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ecx,%edx 6899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl pz,%ecx 6919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl izi,%ebp 6929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ret // jump to the number-of-pixels handler 6949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 6969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 6979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLNoSteps: 6989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl pz,%ecx 6999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $7,%edi // adjust for hardwired offset 7009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $14,%ecx 7019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LEndSpan 7029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLOnlyOneStep: 7059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl s,%eax 7069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl t,%ebx 7079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %eax,%ebp 7089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl %ebx,%edx 7099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LSetEntryvec 7109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 7129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl Spr8Entry2_8 7149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSpr8Entry2_8: 7159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $6,%edi // adjust for hardwired offsets 7169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $12,%ecx 7179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 7189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LLEntry2_8 7199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 7219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl Spr8Entry3_8 7239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSpr8Entry3_8: 7249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $5,%edi // adjust for hardwired offsets 7259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $10,%ecx 7269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LLEntry3_8 7279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 7299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl Spr8Entry4_8 7319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSpr8Entry4_8: 7329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $4,%edi // adjust for hardwired offsets 7339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $8,%ecx 7349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LLEntry4_8 7359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 7379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl Spr8Entry5_8 7399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSpr8Entry5_8: 7409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $3,%edi // adjust for hardwired offsets 7419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $6,%ecx 7429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LLEntry5_8 7439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 7459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl Spr8Entry6_8 7479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSpr8Entry6_8: 7489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $2,%edi // adjust for hardwired offsets 7499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $4,%ecx 7509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LLEntry6_8 7519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 7539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl Spr8Entry7_8 7559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSpr8Entry7_8: 7569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream decl %edi // adjust for hardwired offsets 7579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream subl $2,%ecx 7589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jmp LLEntry7_8 7599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream//---------------------------------------- 7619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 7629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream.globl Spr8Entry8_8 7639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamSpr8Entry8_8: 7649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw (%ecx),%bp 7659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp9 7669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 7679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 7689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp9 7699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,(%ecx) 7709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,(%edi) 7719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp9: 7729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 7739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 7749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 7759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 7769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 7779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 7789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLLEntry7_8: 7799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 2(%ecx),%bp 7809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp10 7819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 7829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 7839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp10 7849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,2(%ecx) 7859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,1(%edi) 7869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp10: 7879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 7889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 7899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 7909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 7919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 7929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 7939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLLEntry6_8: 7949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 4(%ecx),%bp 7959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp11 7969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 7979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 7989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp11 7999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,4(%ecx) 8009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,2(%edi) 8019fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp11: 8029fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 8039fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 8049fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 8059fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 8069fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 8079fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 8089fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLLEntry5_8: 8099fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 6(%ecx),%bp 8109fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp12 8119fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 8129fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 8139fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp12 8149fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,6(%ecx) 8159fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,3(%edi) 8169fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp12: 8179fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 8189fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 8199fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 8209fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 8219fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 8229fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 8239fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLLEntry4_8: 8249fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 8(%ecx),%bp 8259fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp13 8269fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 8279fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 8289fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp13 8299fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,8(%ecx) 8309fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,4(%edi) 8319fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp13: 8329fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 8339fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 8349fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 8359fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 8369fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 8379fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 8389fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLLEntry3_8: 8399fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 10(%ecx),%bp 8409fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp14 8419fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 8429fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 8439fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp14 8449fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,10(%ecx) 8459fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,5(%edi) 8469fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp14: 8479fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 8489fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 8499fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 8509fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 8519fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 8529fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 8539fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLLEntry2_8: 8549fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 12(%ecx),%bp 8559fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp15 8569fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al 8579fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 8589fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp15 8599fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,12(%ecx) 8609fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,6(%edi) 8619fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp15: 8629fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl izistep,%ebp 8639fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl $0,%ebp 8649fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl tstep,%edx 8659fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream sbbl %eax,%eax 8669fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl sstep,%ebx 8679fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream adcl advancetable+4(,%eax,4),%esi 8689fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 8699fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLEndSpan: 8709fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpw 14(%ecx),%bp 8719fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jl Lp16 8729fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb (%esi),%al // load first texel in segment 8739fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpb $(TRANSPARENT_COLOR),%al 8749fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz Lp16 8759fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movw %bp,14(%ecx) 8769fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movb %al,7(%edi) 8779fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLp16: 8789fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 8799fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 8809fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// clear s/z, t/z, 1/z from FP stack 8819fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream// 8829fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fstp %st(0) 8839fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fstp %st(0) 8849fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream fstp %st(0) 8859fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 8869fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream popl %ebx // restore spans pointer 8879fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstreamLNextSpan: 8889fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream addl $(sspan_t_size),%ebx // point to next span 8899fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream movl sspan_t_count(%ebx),%ecx 8909fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream cmpl $0,%ecx // any more spans? 8919fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jg LSpanLoop // yes 8929fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream jz LNextSpan // yes, but this one's empty 8939fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 8949fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream popl %ebx // restore register variables 8959fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream popl %esi 8969fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream popl %edi 8979fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream popl %ebp // restore the caller's stack frame 8989fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream ret 8999fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream 9009fd67c44777b350dc56f3e70c88963b0d966ffc7quake upstream#endif // id386 901