06fdba53e0
The new file stdlib.h contains the definitions of functions that are usually found in stdlib.h. Many more could certainly be added. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
86 lines
1.5 KiB
C
86 lines
1.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* stdlib function definitions for NOLIBC
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* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
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*/
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#ifndef _NOLIBC_STDLIB_H
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#define _NOLIBC_STDLIB_H
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#include "std.h"
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#include "arch.h"
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#include "types.h"
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#include "sys.h"
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/*
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* As much as possible, please keep functions alphabetically sorted.
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*/
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static __attribute__((unused))
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long atol(const char *s)
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{
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unsigned long ret = 0;
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unsigned long d;
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int neg = 0;
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if (*s == '-') {
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neg = 1;
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s++;
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}
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while (1) {
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d = (*s++) - '0';
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if (d > 9)
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break;
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ret *= 10;
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ret += d;
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}
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return neg ? -ret : ret;
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}
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static __attribute__((unused))
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int atoi(const char *s)
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{
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return atol(s);
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}
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static __attribute__((unused))
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int msleep(unsigned int msecs)
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{
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struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 };
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if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
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return (my_timeval.tv_sec * 1000) +
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(my_timeval.tv_usec / 1000) +
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!!(my_timeval.tv_usec % 1000);
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else
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return 0;
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}
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/* This one is not marked static as it's needed by libgcc for divide by zero */
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__attribute__((weak,unused))
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int raise(int signal)
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{
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return kill(getpid(), signal);
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}
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static __attribute__((unused))
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unsigned int sleep(unsigned int seconds)
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{
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struct timeval my_timeval = { seconds, 0 };
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if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
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return my_timeval.tv_sec + !!my_timeval.tv_usec;
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else
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return 0;
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}
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static __attribute__((unused))
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int tcsetpgrp(int fd, pid_t pid)
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{
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return ioctl(fd, TIOCSPGRP, &pid);
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}
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#endif /* _NOLIBC_STDLIB_H */
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