cosmopolitan/libc/vga/tty-klog.greg.c

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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
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 AUTHORS 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.
*/
#include "libc/intrin/newbie.h"
#include "libc/macros.h"
#include "libc/runtime/mman.internal.h"
#include "libc/str/str.h"
#include "libc/vga/vga.internal.h"
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#ifdef __x86_64__
/*
* @fileoverview Instantiation of routines for emergency console output in
* graphical video modes.
*
* @see libc/vga/tty-graph.inc
*/
#ifndef __llvm__
#pragma GCC optimize("s")
#endif
#define KLOGTTY
#define MAYUNROLLLOOPS /* do not unroll loops; keep the code small! */
/* Instantiate output routines for 16-bit pixel formats. */
#define COLOR uint16_t
#define BPP 16
#define MAPCOLOR TtyKlog16MapColor
#define DIRTY TtyKlog16Dirty
#define UPDATE _TtyKlog16Update
#define RESETDIRTY TtyKlog16ResetDirty
#define DRAWBITMAP TtyKlog16DrawBitmap
#define FILLRECT TtyKlog16FillRect
#define MOVERECT TtyKlog16MoveRect
#define DRAWCHAR _TtyKlog16DrawChar
#define ERASELINECELLS _TtyKlog16EraseLineCells
#define MOVELINECELLS _TtyKlog16MoveLineCells
#include "libc/vga/tty-graph.inc"
#undef COLOR
#undef BPP
#undef MAPCOLOR
#undef BG
#undef DIRTY
#undef UPDATE
#undef RESETDIRTY
#undef DRAWBITMAP
#undef FILLRECT
#undef MOVERECT
#undef DRAWCHAR
#undef ERASELINECELLS
#undef MOVELINECELLS
/* Instantiate output routines for 32-bit pixel formats. */
#define COLOR uint32_t
#define BPP 32
#define MAPCOLOR TtyKlog32MapColor
#define DIRTY TtyKlog32Dirty
#define UPDATE _TtyKlog32Update
#define RESETDIRTY TtyKlog32ResetDirty
#define DRAWBITMAP TtyKlog32DrawBitmap
#define FILLRECT TtyKlog32FillRect
#define MOVERECT TtyKlog32MoveRect
#define DRAWCHAR _TtyKlog32DrawChar
#define ERASELINECELLS _TtyKlog32EraseLineCells
#define MOVELINECELLS _TtyKlog32MoveLineCells
#include "libc/vga/tty-graph.inc"
static unsigned short klog_y = 0, klog_x = 0;
void _klog_vga(const char *b, size_t n) {
struct Tty tty;
_vga_reinit(&tty, klog_y, klog_x, kTtyKlog);
_TtyWrite(&tty, b, n);
klog_y = _TtyGetY(&tty);
klog_x = _TtyGetX(&tty);
}
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#endif /* __x86_64__ */