diff options
Diffstat (limited to 'nx-X11/programs/Xserver/include/servermd.h')
| -rw-r--r-- | nx-X11/programs/Xserver/include/servermd.h | 164 |
1 files changed, 5 insertions, 159 deletions
diff --git a/nx-X11/programs/Xserver/include/servermd.h b/nx-X11/programs/Xserver/include/servermd.h index 7652964d0..27b5a8fb9 100644 --- a/nx-X11/programs/Xserver/include/servermd.h +++ b/nx-X11/programs/Xserver/include/servermd.h @@ -49,6 +49,11 @@ SOFTWARE. #define SERVERMD_H 1 /* + * Note: much of this is vestigial from mfb/cfb times. This should + * really be simplified even further. + */ + +/* * Machine dependent values: * GLYPHPADBYTES should be chosen with consideration for the space-time * trade-off. Padding to 0 bytes means that there is no wasted space @@ -62,62 +67,6 @@ SOFTWARE. * kept separate from this. See server/include/font.h for how * GLYPHPADBYTES is used. * - * Along with this, you should choose an appropriate value for - * GETLEFTBITS_ALIGNMENT, which is used in ddx/mfb/maskbits.h. This - * constant choses what kind of memory references are guarenteed during - * font access; either 1, 2 or 4, for byte, word or longword access, - * respectively. For instance, if you have decided to to have - * GLYPHPADBYTES == 4, then it is pointless for you to have a - * GETLEFTBITS_ALIGNMENT > 1, because the padding of the fonts has already - * guarenteed you that your fonts are longword aligned. On the other - * hand, even if you have chosen GLYPHPADBYTES == 1 to save space, you may - * also decide that the computing involved in aligning the pointer is more - * costly than an odd-address access; you choose GETLEFTBITS_ALIGNMENT == 1. - * - * Next, choose the tuning parameters which are appropriate for your - * hardware; these modify the behaviour of the raw frame buffer code - * in ddx/mfb and ddx/cfb. Defining these incorrectly will not cause - * the server to run incorrectly, but defining these correctly will - * cause some noticeable speed improvements: - * - * AVOID_MEMORY_READ - (8-bit cfb only) - * When stippling pixels on the screen (polytext and pushpixels), - * don't read long words from the display and mask in the - * appropriate values. Rather, perform multiple byte/short/long - * writes as appropriate. This option uses many more instructions - * but runs much faster when the destination is much slower than - * the CPU and at least 1 level of write buffer is availible (2 - * is much better). Defined currently for SPARC and MIPS. - * - * FAST_CONSTANT_OFFSET_MODE - (cfb and mfb) - * This define is used on machines which have no auto-increment - * addressing mode, but do have an effectively free constant-offset - * addressing mode. Currently defined for MIPS and SPARC, even though - * I remember the cg6 as performing better without it (cg3 definitely - * performs better with it). - * - * LARGE_INSTRUCTION_CACHE - - * This define increases the number of times some loops are - * unrolled. On 68020 machines (with 256 bytes of i-cache), - * this define will slow execution down as instructions miss - * the cache frequently. On machines with real i-caches, this - * reduces loop overhead, causing a slight performance improvement. - * Currently defined for MIPS and SPARC - * - * FAST_UNALIGNED_READS - - * For machines with more memory bandwidth than CPU, this - * define uses unaligned reads for 8-bit BitBLT instead of doing - * aligned reads and combining the results with shifts and - * logical-ors. Currently defined for 68020 and vax. - * PLENTIFUL_REGISTERS - - * For machines with > 20 registers. Currently used for - * unrolling the text painting code a bit more. Currently - * defined for MIPS. - * SHARED_IDCACHE - - * For non-Harvard RISC machines, those which share the same - * CPU memory bus for instructions and data. This unrolls some - * solid fill loops which are otherwise best left rolled up. - * Currently defined for SPARC. */ #ifdef vax @@ -125,8 +74,6 @@ SOFTWARE. #define IMAGE_BYTE_ORDER LSBFirst /* Values for the VAX only */ #define BITMAP_BIT_ORDER LSBFirst #define GLYPHPADBYTES 1 -#define GETLEFTBITS_ALIGNMENT 4 -#define FAST_UNALIGNED_READS #endif /* vax */ @@ -145,9 +92,6 @@ SOFTWARE. # endif #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 -#define LARGE_INSTRUCTION_CACHE -#define AVOID_MEMORY_READ #endif /* __arm32__ */ @@ -167,9 +111,6 @@ SOFTWARE. # endif #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 -#define LARGE_INSTRUCTION_CACHE -#define AVOID_MEMORY_READ #endif /* __aarch64__ */ @@ -178,12 +119,6 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 /* to make fb work */ -#define GETLEFTBITS_ALIGNMENT 1 /* PA forces longs to 4 */ - /* byte boundries */ -#define AVOID_MEMORY_READ -#define FAST_CONSTANT_OFFSET_MODE -#define LARGE_INSTRUCTION_CACHE -#define PLENTIFUL_REGISTERS #endif /* hpux || __hppa__ */ @@ -192,20 +127,12 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 /* XXX Should this be for Lynx only? */ #ifdef Lynx #define BITMAP_SCANLINE_UNIT 8 #endif -#define LARGE_INSTRUCTION_CACHE -#define FAST_CONSTANT_OFFSET_MODE -#define PLENTIFUL_REGISTERS -#define AVOID_MEMORY_READ - -#define FAST_MEMCPY - #endif /* PowerPC */ #if defined(__sh__) @@ -214,19 +141,12 @@ SOFTWARE. # define IMAGE_BYTE_ORDER MSBFirst # define BITMAP_BIT_ORDER MSBFirst # define GLYPHPADBYTES 4 -# define GETLEFTBITS_ALIGNMENT 1 #else # define IMAGE_BYTE_ORDER LSBFirst # define BITMAP_BIT_ORDER LSBFirst # define GLYPHPADBYTES 4 -# define GETLEFTBITS_ALIGNMENT 1 #endif -#define AVOID_MEMORY_READ -#define FAST_CONSTANT_OFFSET_MODE -#define LARGE_INSTRUCTION_CACHE -#define PLENTIFUL_REGISTERS - #endif /* SuperH */ @@ -248,19 +168,7 @@ SOFTWARE. # define BITMAP_BIT_ORDER MSBFirst #endif -#ifdef sparc -# define AVOID_MEMORY_READ -# define LARGE_INSTRUCTION_CACHE -# define FAST_CONSTANT_OFFSET_MODE -# define SHARED_IDCACHE -#endif - -#ifdef mc68020 -#define FAST_UNALIGNED_READS -#endif - #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 #endif /* sun && !(i386 && SVR4) */ @@ -270,14 +178,7 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst /* Values for the RISC/6000 */ #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 - -#define LARGE_INSTRUCTION_CACHE -#define FAST_CONSTANT_OFFSET_MODE -#define PLENTIFUL_REGISTERS -#define AVOID_MEMORY_READ -#define FAST_MEMCPY #endif /* AIXV3 */ #if defined(ibm032) || defined (ibm) @@ -289,7 +190,6 @@ SOFTWARE. #endif #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 1 -#define GETLEFTBITS_ALIGNMENT 4 /* ibm pcc doesn't understand pragmas. */ #ifdef i386 @@ -303,9 +203,6 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst /* Values for Pegasus only */ #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 - -#define FAST_UNALIGNED_READS #endif /* tektronix */ @@ -314,9 +211,6 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst /* Values for the MacII only */ #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 - -/* might want FAST_UNALIGNED_READS for frame buffers with < 1us latency */ #endif /* macII */ @@ -326,19 +220,12 @@ SOFTWARE. # define IMAGE_BYTE_ORDER LSBFirst /* Values for the PMAX only */ # define BITMAP_BIT_ORDER LSBFirst # define GLYPHPADBYTES 4 -# define GETLEFTBITS_ALIGNMENT 1 #else # define IMAGE_BYTE_ORDER MSBFirst /* Values for the MIPS only */ # define BITMAP_BIT_ORDER MSBFirst # define GLYPHPADBYTES 4 -# define GETLEFTBITS_ALIGNMENT 1 #endif -#define AVOID_MEMORY_READ -#define FAST_CONSTANT_OFFSET_MODE -#define LARGE_INSTRUCTION_CACHE -#define PLENTIFUL_REGISTERS - #endif /* mips */ #if defined(__alpha) || defined(__alpha__) || defined(__alphaCross) @@ -355,10 +242,6 @@ SOFTWARE. # endif # define GLYPHPADBYTES 4 -# define GETLEFTBITS_ALIGNMENT 1 -# define FAST_CONSTANT_OFFSET_MODE -# define LARGE_INSTRUCTION_CACHE -# define PLENTIFUL_REGISTERS #endif /* alpha */ @@ -367,14 +250,8 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 #define BITMAP_SCANLINE_UNIT 8 -#define LARGE_INSTRUCTION_CACHE -#define FAST_CONSTANT_OFFSET_MODE -#define FAST_UNALIGNED_READ - -#define FAST_MEMCPY #endif /* linux/s390 */ @@ -383,14 +260,9 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 #define BITMAP_SCANLINE_UNIT 8 -#define LARGE_INSTRUCTION_CACHE -#define FAST_CONSTANT_OFFSET_MODE -#define FAST_UNALIGNED_READ -#define FAST_MEMCPY #endif /* linux/s390x */ @@ -408,10 +280,6 @@ SOFTWARE. # endif # define GLYPHPADBYTES 4 -# define GETLEFTBITS_ALIGNMENT 1 -# define FAST_CONSTANT_OFFSET_MODE -# define LARGE_INSTRUCTION_CACHE -# define PLENTIFUL_REGISTERS #endif /* ia64 */ @@ -429,11 +297,7 @@ SOFTWARE. # endif # define GLYPHPADBYTES 4 -# define GETLEFTBITS_ALIGNMENT 1 -# define LARGE_INSTRUCTION_CACHE -# define FAST_CONSTANT_OFFSET_MODE /* ???? */ -# define FAST_UNALIGNED_READS #endif /* AMD64 */ #ifdef stellar @@ -441,7 +305,6 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst /* Values for the stellar only*/ #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 4 #define IMAGE_BUFSIZE (64*1024) /* * Use SysV random number generator. @@ -455,13 +318,8 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst /* Values for the OMRON only*/ #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 #ifndef mc68000 -#define FAST_CONSTANT_OFFSET_MODE -#define AVOID_MEMORY_READ -#define LARGE_INSTRUCTION_CACHE -#define PLENTIFUL_REGISTERS #endif #endif /* luna */ @@ -496,12 +354,8 @@ SOFTWARE. #define GLYPHPADBYTES 4 #endif -#define GETLEFTBITS_ALIGNMENT 1 -#define AVOID_MEMORY_READ #ifdef XSVGA #define AVOID_GLYPHBLT -#define FAST_CONSTANT_OFFSET_MODE -#define FAST_MEMCPY #define NO_ONE_RECT #endif @@ -511,9 +365,7 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst #define BITMAP_BIT_ORDER MSBFirst -#define FAST_UNALIGNED_READS #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 #endif /* linux/m68k */ @@ -522,11 +374,6 @@ SOFTWARE. #define IMAGE_BYTE_ORDER MSBFirst #define BITMAP_BIT_ORDER MSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 -#define AVOID_MEMORY_READ -#define FAST_CONSTANT_OFFSET_MODE -#define LARGE_INSTRUCTION_CACHE -#define PLENTIFUL_REGISTERS #endif @@ -535,7 +382,6 @@ SOFTWARE. #define IMAGE_BYTE_ORDER LSBFirst #define BITMAP_BIT_ORDER LSBFirst #define GLYPHPADBYTES 4 -#define GETLEFTBITS_ALIGNMENT 1 #endif /* size of buffer to use with GetImage, measured in bytes. There's obviously |