Luna/libs/libc/include/bits/macros.h

#ifndef _BITS_MACROS_H
#define _BITS_MACROS_H

#define __lc_noreturn __attribute__((noreturn))
#define __lc_align(n) __attribute__((aligned(n)))
#define __lc_deprecated(msg) __attribute__((deprecated(msg)))
#define __lc_unreachable __builtin_unreachable
#define __lc_used __attribute__((used))

#endif
Kernel, libc and userspace: Add basic errno support. Kernel: Add an errno.h header with definitions for each header, and return those, negated, from syscalls when there is an error. mmap() returns an invalid address with errno encoded, instead of returning a negated errno; this address is encoded as ffffffffffffffEE where EE is errno in hex. libc: make syscall() return -1 and set errno on error, instead of returning the raw return value of the system call. Also, add mmap() and munmap() wrappers in sys/mman.h :). userspace: make the memeater program show the value of errno when allocating memory fails. Things to improve: add perror() and strerror() to make the errno experience even better! >.< 2022-10-08 10:06:09 +00:00			`#ifndef _BITS_MACROS_H`
			`#define _BITS_MACROS_H`
libc: add an internal macros.h header with headers to make attributes less verbose 2022-10-04 17:06:56 +00:00
libc: Change bits/macros.h to use a __lc_ prefix for internal macros That way, we don't pollute user programs with our own 'noreturn' and 'deprecated' macros 2022-10-15 07:52:37 +00:00			`#define __lc_noreturn __attribute__((noreturn))`
			`#define __lc_align(n) __attribute__((aligned(n)))`
			`#define __lc_deprecated(msg) __attribute__((deprecated(msg)))`
libc: Alias __lc_unreachable to __builtin_unreachable 2022-10-15 09:20:20 +00:00			`#define __lc_unreachable __builtin_unreachable`
Add new __lc_used macro 2022-10-21 16:39:46 +00:00			`#define __lc_used __attribute__((used))`
libc: add an internal macros.h header with headers to make attributes less verbose 2022-10-04 17:06:56 +00:00
			`#endif`