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Diffstat (limited to 'cfb/stip68kgnu.h')
| -rw-r--r-- | cfb/stip68kgnu.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/cfb/stip68kgnu.h b/cfb/stip68kgnu.h new file mode 100644 index 000000000..9b2c7a1b3 --- /dev/null +++ b/cfb/stip68kgnu.h @@ -0,0 +1,128 @@ +/* + * $Xorg: stip68kgnu.h,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 + */ + +/* + * Stipple stack macro for 68k GCC + * + * Note - this macro can nott describe the full extent of the + * modifications made to the arguments (GCC does not allow enough + * arguments to __asm statements). Therefore, it is possible + * (though unlikely) that future magic versions of GCC may + * miscompile this somehow. In particular, (stipple) is modified + * by the macro, yet not listed as an output value. + */ + +#define STIPPLE(addr,stipple,value,width,count,shift) \ + __asm volatile ( \ + "subqw #1,%1\n\ + lea 0f,a1\n\ + movew #28,d2\n\ + addl %7,d2\n\ + movew #28,d3\n\ + subql #4,%7\n\ + negl %7\n\ +1:\n\ + movel %0,a0\n\ + addl %5,%0\n\ + movel %3@+,d1\n\ + beq 3f\n\ + movel d1,d0\n\ + lsrl d2,d0\n\ + lsll #5,d0\n\ + lsll %7,d1\n\ + jmp a1@(d0:l)\n\ +2:\n\ + addl #4,a0\n\ + movel d1,d0\n\ + lsrl d3,d0\n\ + lsll #5,d0\n\ + lsll #4,d1\n\ + jmp a1@(d0:l)\n\ +0:\n\ + bne 2b ; dbra %1,1b ; bra 4f\n\ + . = 0b + 0x20\n\ + moveb %4,a0@(3)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f\n\ + . = 0b + 0x40\n\ + moveb %4,a0@(2)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f\n\ + . = 0b + 0x60\n\ + movew %4,a0@(2)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f\n\ + . = 0b + 0x80\n\ + moveb %4,a0@(1)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0xa0\n\ + moveb %4,a0@(3) ; moveb %4,a0@(1)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0xc0\n\ + movew %4,a0@(1)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0xe0\n\ + movew %4,a0@(2) ; moveb %4,a0@(1)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x100\n\ + moveb %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x120\n\ + moveb %4,a0@(3) ; moveb %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x140\n\ + moveb %4,a0@(2) ; moveb %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x160\n\ + movew %4,a0@(2) ; moveb %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x180\n\ + movew %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x1a0\n\ + moveb %4,a0@(3) ; movew %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x1c0\n\ + moveb %4,a0@(2) ; movew %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; dbra %1,1b ; bra 4f ;\n\ + . = 0b + 0x1e0\n\ + movel %4,a0@(0)\n\ + andl d1,d1 ; bne 2b ; \n\ +3: dbra %1,1b ; \n\ +4:\n"\ + : "=a" (addr), /* %0 */ \ + "=d" (count) /* %1 */ \ + : "0" (addr), /* %2 */ \ + "a" (stipple), /* %3 */ \ + "d" (value), /* %4 */ \ + "a" (width), /* %5 */ \ + "1" (count), /* %6 */ \ + "d" (shift) /* %7 */ \ + : /* ctemp */ "d0", \ + /* c */ "d1", \ + /* lshift */ "d2", \ + /* rshift */ "d3", \ + /* atemp */ "a0", \ + /* case */ "a1") |