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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
15 lines
425 B
C
15 lines
425 B
C
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_SIGACTION_LINUX_H_
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#define COSMOPOLITAN_LIBC_CALLS_STRUCT_SIGACTION_LINUX_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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struct sigaction$linux {
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intptr_t sa_handler;
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uint64_t sa_flags;
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void (*sa_restorer)(void);
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struct sigset$linux {
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uint32_t sig[2];
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} sa_mask;
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};
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_CALLS_STRUCT_SIGACTION_LINUX_H_ */
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