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32-bit s390 is very close to the existing 64-bit implementation. Some special handling is necessary as there is neither LLVM nor QEMU support. Also the kernel itself can not build natively for 32-bit s390, so instead the test program is executed with a 64-bit kernel. Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250206-nolibc-s390-v2-2-991ad97e3d58@weissschuh.net Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
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*/
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/* Below comes the architecture-specific code. For each architecture, we have
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* the syscall declarations and the _start code definition. This is the only
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* global part. On all architectures the kernel puts everything in the stack
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* before jumping to _start just above us, without any return address (_start
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* is not a function but an entry point). So at the stack pointer we find argc.
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* Then argv[] begins, and ends at the first NULL. Then we have envp which
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* starts and ends with a NULL as well. So envp=argv+argc+1.
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*/
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#ifndef _NOLIBC_ARCH_H
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#define _NOLIBC_ARCH_H
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#if defined(__x86_64__)
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#include "arch-x86_64.h"
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#elif defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
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#include "arch-i386.h"
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#elif defined(__ARM_EABI__)
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#include "arch-arm.h"
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#elif defined(__aarch64__)
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#include "arch-aarch64.h"
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#elif defined(__mips__)
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#include "arch-mips.h"
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#elif defined(__powerpc__)
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#include "arch-powerpc.h"
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#elif defined(__riscv)
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#include "arch-riscv.h"
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#elif defined(__s390x__) || defined(__s390__)
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#include "arch-s390.h"
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#elif defined(__loongarch__)
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#include "arch-loongarch.h"
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#else
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#error Unsupported Architecture
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#endif
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#endif /* _NOLIBC_ARCH_H */
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