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cccaea1d66
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is mostly a completely mechanical patch (done with a simple "sed -i" statement), except for some manual tweaks in the files arch/parisc/include/asm/smp.h, arch/parisc/include/asm/signal.h, arch/parisc/include/asm/thread_info.h and arch/parisc/include/asm/vdso.h that had the macro spelled in a wrong way. Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: linux-parisc@vger.kernel.org Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Helge Deller <deller@gmx.de>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* include/asm-parisc/prefetch.h
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*
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* PA 2.0 defines data prefetch instructions on page 6-11 of the Kane book.
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* In addition, many implementations do hardware prefetching of both
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* instructions and data.
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*
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* PA7300LC (page 14-4 of the ERS) also implements prefetching by a load
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* to gr0 but not in a way that Linux can use. If the load would cause an
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* interruption (eg due to prefetching 0), it is suppressed on PA2.0
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* processors, but not on 7300LC.
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*
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*/
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#ifndef __ASM_PARISC_PREFETCH_H
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#define __ASM_PARISC_PREFETCH_H
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#ifndef __ASSEMBLER__
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#ifdef CONFIG_PREFETCH
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#define ARCH_HAS_PREFETCH
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static inline void prefetch(const void *addr)
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{
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__asm__(
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#ifndef CONFIG_PA20
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/* Need to avoid prefetch of NULL on PA7300LC */
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" extrw,u,= %0,31,32,%%r0\n"
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#endif
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" ldw 0(%0), %%r0" : : "r" (addr));
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}
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/* LDD is a PA2.0 addition. */
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#ifdef CONFIG_PA20
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#define ARCH_HAS_PREFETCHW
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static inline void prefetchw(const void *addr)
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{
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__asm__("ldd 0(%0), %%r0" : : "r" (addr));
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}
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#endif /* CONFIG_PA20 */
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#endif /* CONFIG_PREFETCH */
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#endif /* __ASSEMBLER__ */
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#endif /* __ASM_PARISC_PROCESSOR_H */
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