mirror of
https://github.com/opencontainers/runc.git
synced 2026-07-10 21:53:57 +08:00
Rodrigo Campos
90f5da651a
Linux repo has under `tools/include/nolibc` very simple include files that we can use to generate very small binaries that don't depend on libc. To make things even better, since Linux 6.6 it supports all the architectures we support in runc, which is just beautiful. The runc-dmz binary on x86_64 before this patch (on my debian host) was taking 636K, with this patch it takes only 8K. Signed-off-by: Rodrigo Campos <rodrigoca@microsoft.com>
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
|
|
/*
|
|
* Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
|
|
*/
|
|
|
|
/* Below comes the architecture-specific code. For each architecture, we have
|
|
* the syscall declarations and the _start code definition. This is the only
|
|
* global part. On all architectures the kernel puts everything in the stack
|
|
* before jumping to _start just above us, without any return address (_start
|
|
* is not a function but an entry point). So at the stack pointer we find argc.
|
|
* Then argv[] begins, and ends at the first NULL. Then we have envp which
|
|
* starts and ends with a NULL as well. So envp=argv+argc+1.
|
|
*/
|
|
|
|
#ifndef _NOLIBC_ARCH_H
|
|
#define _NOLIBC_ARCH_H
|
|
|
|
#if defined(__x86_64__)
|
|
#include "arch-x86_64.h"
|
|
#elif defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
|
|
#include "arch-i386.h"
|
|
#elif defined(__ARM_EABI__)
|
|
#include "arch-arm.h"
|
|
#elif defined(__aarch64__)
|
|
#include "arch-aarch64.h"
|
|
#elif defined(__mips__) && defined(_ABIO32)
|
|
#include "arch-mips.h"
|
|
#elif defined(__powerpc__)
|
|
#include "arch-powerpc.h"
|
|
#elif defined(__riscv)
|
|
#include "arch-riscv.h"
|
|
#elif defined(__s390x__)
|
|
#include "arch-s390.h"
|
|
#elif defined(__loongarch__)
|
|
#include "arch-loongarch.h"
|
|
#endif
|
|
|
|
#endif /* _NOLIBC_ARCH_H */
|