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f4f4caab0e
I wanted a tiny scriptable meltdown proof way to run userspace programs and visualize how program execution impacts memory. It helps to explain how things like Actually Portable Executable works. It can show you how the GCC generated code is going about manipulating matrices and more. I didn't feel fully comfortable with Qemu and Bochs because I'm not smart enough to understand them. I wanted something like gVisor but with much stronger levels of assurances. I wanted a single binary that'll run, on all major operating systems with an embedded GPL barrier ZIP filesystem that is tiny enough to transpile to JavaScript and run in browsers too. https://justine.storage.googleapis.com/emulator625.mp4
25 lines
736 B
C
25 lines
736 B
C
#ifndef COSMOPOLITAN_LIBC_STDIO_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_STDIO_INTERNAL_H_
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#include "libc/stdio/stdio.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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extern FILE g_stdio[3];
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extern unsigned char g_stdinbuf[BUFSIZ];
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extern unsigned char g_stdoutbuf[BUFSIZ];
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extern unsigned char g_stderrbuf[BUFSIZ];
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int _fflushregister(FILE *) hidden;
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void _fflushunregister(FILE *) hidden;
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int freadbuf(FILE *) hidden;
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int fwritebuf(FILE *) hidden;
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int fsreadbuf(FILE *) hidden;
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int fswritebuf(FILE *) hidden;
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long fseteof(FILE *) hidden;
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long fseterrno(FILE *) hidden;
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long fseterr(FILE *, int) hidden;
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_STDIO_INTERNAL_H_ */
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