cosmopolitan/libc/linux/exit.h

#ifndef COSMOPOLITAN_LIBC_LINUX_EXIT_H_
#define COSMOPOLITAN_LIBC_LINUX_EXIT_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_

forceinline wontreturn long LinuxExit(long rc) {
  asm volatile("syscall"
               : /* no outputs */
               : "a"(0xE7), "D"(rc)
               : "memory");
  unreachable;
}

COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_LINUX_EXIT_H_ */
Add x86_64-linux-gnu emulator 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 2020-08-25 04:23:25 -07:00			`#ifndef COSMOPOLITAN_LIBC_LINUX_EXIT_H_`
			`#define COSMOPOLITAN_LIBC_LINUX_EXIT_H_`
			`#if !(__ASSEMBLER__ + __LINKER__ + 0)`
			`COSMOPOLITAN_C_START_`

Add chibicc This program popped up on Hacker News recently. It's the only modern compiler I've ever seen that doesn't have dependencies and is easily modified. So I added all of the missing GNU extensions I like to use which means it might be possible soon to build on non-Linux and have third party not vendor gcc binaries. 2020-12-05 12:20:41 -08:00			`forceinline wontreturn long LinuxExit(long rc) {`
Add x86_64-linux-gnu emulator 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 2020-08-25 04:23:25 -07:00			`asm volatile("syscall"`
			`: /* no outputs */`
			`: "a"(0xE7), "D"(rc)`
			`: "memory");`
			`unreachable;`
			`}`

			`COSMOPOLITAN_C_END_`
			`#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */`
			`#endif /* COSMOPOLITAN_LIBC_LINUX_EXIT_H_ */`