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Diffstat (limited to 'xorg-server/cfb/stipmips.s')
| -rw-r--r-- | xorg-server/cfb/stipmips.s | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/xorg-server/cfb/stipmips.s b/xorg-server/cfb/stipmips.s deleted file mode 100644 index c42d9b5ae..000000000 --- a/xorg-server/cfb/stipmips.s +++ /dev/null @@ -1,281 +0,0 @@ -/* - * $Xorg: stipmips.s,v 1.4 2001/02/09 02:04:39 xorgcvs Exp $ - * -Copyright 1990, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN -AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN -CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -Except as contained in this notice, the name of The Open Group shall not be -used in advertising or otherwise to promote the sale, use or other dealings -in this Software without prior written authorization from The Open Group. - * - * Author: Keith Packard, MIT X Consortium - */ - -/* - * MIPS assembly code for optimized text rendering. - * - * Other stippling could be done in assembly, but the payoff is - * not nearly as large. Mostly because large areas are heavily - * optimized already. - */ - -#ifdef MIPSEL -# define BitsR sll -# define BitsL srl -# define BO(o) o -# define HO(o) o -# define WO(o) o -# define FourBits(dest,bits) and dest, bits, 0xf -#else -# define BitsR srl -# define BitsL sll -# define BO(o) 3-o -# define HO(o) 2-o -# define WO(o) o -# define FourBits(dest,bits) srl dest, bits, 28 -#endif - -/* reordering instructions would be fatal here */ - .set noreorder - - -/* - * cfbStippleStack(addr, stipple, value, stride, Count, Shift) - * 4 5 6 7 16(sp) 20(sp) - * - * Apply successive 32-bit stipples starting at addr, addr+stride, ... - * - * Used for text rendering, but only when no data could be lost - * when the stipple is shifted left by Shift bits - */ -/* arguments */ -#define addr $4 -#define stipple $5 -#define value $6 -#define stride $7 -#define Count 16($sp) -#define Shift 20($sp) - -/* local variables */ -#define count $14 -#define shift $13 -#define atemp $12 -#define bits $11 -#define lshift $9 -#define sbase $8 -#define stemp $2 - -#define CASE_SIZE 5 /* case blocks are 2^5 bytes each */ -#define CASE_MASK 0x1e0 /* first case mask */ - -#define ForEachLine $200 -#define NextLine $201 -#define NextLine1 $202 -#define CaseBegin $203 -#define ForEachBits $204 -#define ForEachBits1 $205 -#define NextBits $206 - -#ifdef TETEXT -#define cfbStippleStack cfbStippleStackTE -#endif - - .globl cfbStippleStack - .ent cfbStippleStack 2 -cfbStippleStack: - .frame $sp, 0, $31 - lw count, Count /* fetch stack params */ - la sbase,CaseBegin /* load up switch table */ - lw shift, Shift - li lshift, 4 /* compute offset within */ - subu lshift, lshift, shift /* stipple of remaining bits */ -#ifdef MIPSEL - addu shift, shift, CASE_SIZE /* first shift for LSB */ -#else - addu shift, shift, 28-CASE_SIZE /* first shift for MSB */ -#endif - /* do ... while (--count > 0); */ -ForEachLine: - lw bits, 0(stipple) /* get stipple bits */ - move atemp, addr /* set up for this line */ -#ifdef TETEXT - /* Terminal emulator fonts are expanded and have many 0 rows */ - beqz bits, NextLine /* skip out early on 0 */ -#endif - addu addr, addr, stride /* step for the loop */ - BitsR stemp, bits, shift /* get first bits */ - and stemp, stemp, CASE_MASK /* compute first branch */ - addu stemp, stemp, sbase /* ... */ - j stemp /* ... */ - BitsL bits, bits, lshift /* set remaining bits */ - -ForEachBits: - addu atemp, atemp, 4 -ForEachBits1: - FourBits(stemp, bits) /* compute jump for */ - sll stemp, stemp, CASE_SIZE /* next four bits */ - addu stemp, stemp, sbase /* ... */ - j stemp /* ... */ - BitsL bits, bits, 4 /* step for remaining bits */ -CaseBegin: - bnez bits, ForEachBits1 /* 0 */ - addu atemp, atemp, 4 -NextLine: - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - bnez bits, ForEachBits /* 1 */ - sb value, BO(0)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - bnez bits, ForEachBits /* 2 */ - sb value, BO(1)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - bnez bits, ForEachBits /* 3 */ - sh value, HO(0)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - bnez bits, ForEachBits /* 4 */ - sb value, BO(2)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - sb value, BO(0)(atemp) /* 5 */ - bnez bits, ForEachBits - sb value, BO(2)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - - sb value, BO(1)(atemp) /* 6 */ - bnez bits, ForEachBits - sb value, BO(2)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - - bnez bits, ForEachBits /* 7 */ - swl value, BO(2)(atemp) /* untested on MSB */ - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - bnez bits, ForEachBits /* 8 */ - sb value, BO(3)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - sb value, BO(0)(atemp) /* 9 */ - bnez bits, ForEachBits - sb value, BO(3)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - - sb value, BO(1)(atemp) /* a */ - bnez bits, ForEachBits - sb value, BO(3)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - - sh value, HO(0)(atemp) /* b */ - bnez bits, ForEachBits - sb value, BO(3)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - - bnez bits, ForEachBits /* c */ - sh value, HO(2)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - sb value, BO(0)(atemp) /* d */ - bnez bits, ForEachBits - sh value, HO(2)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - - bnez bits, ForEachBits /* e */ - swr value, BO(1)(atemp) /* untested on MSB */ - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - bnez bits, ForEachBits /* f */ - sw value, WO(0)(atemp) - addu count, count, -1 - bnez count, ForEachLine - addu stipple, stipple, 4 - j $31 - nop - nop - - .end cfbStippleStack |