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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>
66 lines
2 KiB
C
66 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_PARISC_ALTERNATIVE_H
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#define __ASM_PARISC_ALTERNATIVE_H
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#define ALT_COND_ALWAYS 0x80 /* always replace instruction */
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#define ALT_COND_NO_SMP 0x01 /* when running UP instead of SMP */
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#define ALT_COND_NO_DCACHE 0x02 /* if system has no d-cache */
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#define ALT_COND_NO_ICACHE 0x04 /* if system has no i-cache */
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#define ALT_COND_NO_SPLIT_TLB 0x08 /* if split_tlb == 0 */
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#define ALT_COND_NO_IOC_FDC 0x10 /* if I/O cache does not need flushes */
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#define ALT_COND_RUN_ON_QEMU 0x20 /* if running on QEMU */
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#define INSN_PxTLB 0x02 /* modify pdtlb, pitlb */
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#define INSN_NOP 0x08000240 /* nop */
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#ifndef __ASSEMBLER__
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <linux/stringify.h>
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struct alt_instr {
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s32 orig_offset; /* offset to original instructions */
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s16 len; /* end of original instructions */
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u16 cond; /* see ALT_COND_XXX */
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u32 replacement; /* replacement instruction or code */
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} __packed;
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void set_kernel_text_rw(int enable_read_write);
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void apply_alternatives_all(void);
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void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
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const char *module_name);
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/* Alternative SMP implementation. */
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#define ALTERNATIVE(cond, replacement) "!0:" \
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".section .altinstructions, \"a\" !" \
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".align 4 !" \
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".word (0b-4-.) !" \
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".hword 1, " __stringify(cond) " !" \
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".word " __stringify(replacement) " !" \
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".previous"
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#else
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/* to replace one single instructions by a new instruction */
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#define ALTERNATIVE(from, to, cond, replacement)\
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.section .altinstructions, "a" ! \
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.align 4 ! \
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.word (from - .) ! \
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.hword (to - from)/4, cond ! \
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.word replacement ! \
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.previous
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/* to replace multiple instructions by new code */
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#define ALTERNATIVE_CODE(from, num_instructions, cond, new_instr_ptr)\
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.section .altinstructions, "a" ! \
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.align 4 ! \
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.word (from - .) ! \
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.hword -num_instructions, cond ! \
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.word (new_instr_ptr - .) ! \
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.previous
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#endif /* __ASSEMBLER__ */
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#endif /* __ASM_PARISC_ALTERNATIVE_H */
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