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https://github.com/jart/cosmopolitan.git
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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
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_RUNTIME_INTERNAL_H_
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#ifndef __STRICT_ANSI__
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#include "libc/dce.h"
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#include "libc/runtime/runtime.h"
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#define RUNSTATE_INITIALIZED (1 << 0)
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#define RUNSTATE_BROKEN (1 << 1)
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#define RUNSTATE_TERMINATE (1 << 2)
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#define STACK_CEIL 0x700000000000ul
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#define STACK_SIZE FRAMESIZE
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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hidden extern char **g_freebsdhint;
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hidden extern unsigned g_runstate;
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hidden extern void *g_stacktop;
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void _init(void) hidden;
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void _piro(int) hidden;
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void *__cxa_finalize(void *) hidden;
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void _executive(int, char **, char **, long (*)[2]) hidden noreturn;
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void __stack_chk_fail(void) noreturn relegated;
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void __stack_chk_fail_local(void) noreturn relegated hidden;
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int getdosargv(const char16_t *, char *, size_t, char **, size_t) hidden;
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forceinline void AssertNeverCalledWhileTerminating(void) {
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if (!NoDebug() && (g_runstate & RUNSTATE_TERMINATE)) {
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abort();
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}
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}
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* ANSI */
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#endif /* COSMOPOLITAN_LIBC_RUNTIME_INTERNAL_H_ */
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