78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/wm3.h,v 1.3 2000/09/26 15:57:21 tsi Exp $ */
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/* $XConsortium: wm3.h /main/4 1996/02/21 17:59:24 kaleb $ */
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#include "vgaReg.h"
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#ifdef PC98_EGC
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#define VGA_ALLPLANES 0xFL
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#endif
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/* Do call in Write Mode 3.
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* We take care of the possibility that two passes are needed.
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*/
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#ifndef PC98_EGC
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#define DO_WM3(pgc,call) \
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{ int _tp, _fg, _bg, _alu; \
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_fg = pgc->fgPixel; _bg = pgc->bgPixel; \
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_tp = wm3_set_regs(pgc); \
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(call); \
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if ( _tp ) { \
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_alu = pgc->alu; \
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pgc->alu = GXinvert; \
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_tp = wm3_set_regs(pgc); \
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(call); \
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pgc->alu = _alu; \
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} \
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pgc->fgPixel = _fg; pgc->bgPixel = _bg; \
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}
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#else
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#define DO_WM3(pgc,call) \
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{ int _tp, _fg, _bg; \
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_fg = pgc->fgPixel; _bg = pgc->bgPixel; \
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_tp = wm3_set_regs(pgc); \
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(call); \
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pgc->fgPixel = _fg; pgc->bgPixel = _bg; \
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}
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#endif
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#ifndef PC98_EGC
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#define WM3_SET_INK(ink) \
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SetVideoGraphics(Set_ResetIndex, ink)
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#else
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#define WM3_SET_INK(ink) \
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outw(EGC_FGC, ink)
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#endif
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/* GJA -- Move a long word to screen memory.
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* The reads into 'dummy' are here to load the VGA latches.
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* This is a RMW operation except for trivial cases.
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* Notice that we ignore the operation.
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*/
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#ifdef PC98_EGC
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#define UPDRW(destp,src) \
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{ volatile unsigned short *_dtmp = \
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(volatile unsigned short *)(destp); \
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unsigned int _stmp = (src); \
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*_dtmp = _stmp; _dtmp++; _stmp >>= 16; \
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*_dtmp = _stmp; }
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#else
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#define UPDRW(destp,src) \
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{ volatile char *_dtmp = (volatile char *)(destp); \
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unsigned int _stmp = (src); \
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volatile int dummy; /* Bit bucket. */ \
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_stmp = ldl_u(&_stmp); \
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dummy = *_dtmp; *_dtmp = _stmp; _dtmp++; _stmp >>= 8; \
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dummy = *_dtmp; *_dtmp = _stmp; _dtmp++; _stmp >>= 8; \
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dummy = *_dtmp; *_dtmp = _stmp; _dtmp++; _stmp >>= 8; \
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dummy = *_dtmp; *_dtmp = _stmp; }
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#endif
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#define UPDRWB(destp,src) \
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{ volatile int dummy; /* Bit bucket. */ \
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dummy = *(destp); *(destp) = (src); }
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