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https://github.com/jart/cosmopolitan.git
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7e0a09feec
This change ports APE Loader to Linux AARCH64, so that Raspberry Pi users can run programs like redbean, without the executable needing to modify itself. Progress has also slipped into this change on the issue of making progress better conforming to user expectations and industry standards regarding which symbols we're allowed to declare
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/calls/calls.h"
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#include "libc/calls/termios.h"
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#include "libc/isystem/unistd.h"
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#include "libc/math.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/termios.h"
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#ifdef __x86_64__
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/**
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* @fileoverview Bare Metal VGA TTY demo.
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*
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* This program can boot as an operating system. Try it out:
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*
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* make -j8 o//examples/vga.com
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* qemu-system-x86_64 -hda o//examples/vga.com -serial stdio
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*
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* Please note that, by default, APE binaries only use the serial port
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* for stdio. To get the VGA console as an added bonus:
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*
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* __static_yoink("vga_console");
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*
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* Should be added to the top of your main() program source file.
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*/
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__static_yoink("vga_console");
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int main(int argc, char *argv[]) {
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volatile long double x = -.5;
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volatile long double y = 1.5;
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struct termios tio;
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char buf[16];
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ssize_t res;
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if (tcgetattr(0, &tio) != -1) {
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tio.c_lflag &= ~(ECHO | ICANON);
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tcsetattr(0, TCSANOW, &tio);
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}
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write(1, "\e[5n", 4);
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res = read(0, buf, 4);
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if (res != 4 || memcmp(buf, "\e[0n", 4) != 0) {
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printf("res = %d?\n", res);
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return -1;
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}
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printf("\e[92;44mHello World!\e[0m %.19Lg\n", atan2l(x, y));
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// read/print loop so machine doesn't reset on metal
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for (;;) {
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if ((res = readansi(0, buf, 16)) > 0) {
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printf("got \e[97m%`'.*s\e[0m\r\n", res, buf);
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}
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}
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}
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#endif /* __x86_64__ */
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