6 commits

Author	SHA1	Message	Date
Justine Tunney	14e192e5ba	Introduce --strace flag for system call tracing ... This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support	2022-03-18 18:07:28 -07:00
Justine Tunney	6c2fd9ecc6	Clean old .source directive out of asm code	2022-03-18 12:43:21 -07:00
Justine Tunney	d932948fb4	Remove more nonstandard stuff from cosmopolitan.h ... Fixes #61	2021-03-01 00:18:23 -08:00
Justine Tunney	37a4c70c36	Change license	2020-12-27 17:18:44 -08:00
Justine Tunney	7327c345f9	Get address sanitizer mostly working	2020-09-03 05:44:37 -07:00
Justine Tunney	f4f4caab0e	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 04:43:42 -07:00

Renamed from libc/runtime/mapanon-thunk.S (Browse further)