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tools/nolibc: move getauxval() to sys/auxv.h

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This is the location regular userspace expects the definition.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-4-a069a3f1d145@linutronix.de
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
This commit is contained in:
Thomas Weißschuh
2025-04-16 14:06:19 +02:00
committed by Thomas Weißschuh
parent ecc091d93a
commit 9e67941dde
4 changed files with 43 additions and 26 deletions
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1
tools/include/nolibc/Makefile
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@@ -44,6 +44,7 @@ all_files := \
stdlib.h \
string.h \
sys.h \
sys/auxv.h \
time.h \
types.h \
unistd.h \

1
tools/include/nolibc/nolibc.h
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@@ -96,6 +96,7 @@
#include "arch.h"
#include "types.h"
#include "sys.h"
#include "sys/auxv.h"
#include "ctype.h"
#include "elf.h"
#include "signal.h"

26
tools/include/nolibc/stdlib.h
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@@ -102,32 +102,6 @@ char *getenv(const char *name)
return NULL;
}
static __attribute__((unused))
unsigned long getauxval(unsigned long type)
{
const unsigned long *auxv = _auxv;
unsigned long ret;
if (!auxv)
return 0;
while (1) {
if (!auxv[0] && !auxv[1]) {
ret = 0;
break;
}
if (auxv[0] == type) {
ret = auxv[1];
break;
}
auxv += 2;
}
return ret;
}
static __attribute__((unused))
void *malloc(size_t len)
{

41
tools/include/nolibc/sys/auxv.h Normal file
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@@ -0,0 +1,41 @@
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* auxv definitions for NOLIBC
* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
*/
#ifndef _NOLIBC_SYS_AUXV_H
#define _NOLIBC_SYS_AUXV_H
#include "../crt.h"
static __attribute__((unused))
unsigned long getauxval(unsigned long type)
{
const unsigned long *auxv = _auxv;
unsigned long ret;
if (!auxv)
return 0;
while (1) {
if (!auxv[0] && !auxv[1]) {
ret = 0;
break;
}
if (auxv[0] == type) {
ret = auxv[1];
break;
}
auxv += 2;
}
return ret;
}
/* make sure to include all global symbols */
#include "../nolibc.h"
#endif /* _NOLIBC_SYS_AUXV_H */