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These are a number of unrelated cleanups, generally simplifying the architecture specific header files: - A series from Al Viro simplifies asm/vga.h, after it turns out that most of it can be generalized. - A series from Julian Vetter adds a common version of memcpy_{to,from}io() and memset_io() and changes most architectures to use that instead of their own implementation - A series from Niklas Schnelle concludes his work to make PC style inb()/outb() optional - Nicolas Pitre contributes improvements for the generic do_div() helper - Christoph Hellwig adds a generic version of page_to_phys() and phys_to_page(), replacing the slightly different architecture specific definitions. - Uwe Kleine-Koenig has a minor cleanup for ioctl definitions -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmc+Z0gACgkQYKtH/8kJ UicqzA/8CcqVdcWKlFAyiFI62DCkd3iYm/joNK3/JhvUIvVFvY+HI0+XpTeOEN1r dfYBNg/KTVSbia5MEEy28Lk5WdoA3X7p9E8NuYC1ik/qvH3Y0kXDU2NiRcJDwalq u56tGUwDITFUzRo47a4Z53JpV60FlGaUVjuKp1jJiOQkcs/iussVYuti8mNVb1ud 1tf21TEAIywq43IC8CxevIRsBkJBqMhalaGWYgKw3ZTwXdiKaXed6RH7IjPodanN 6b7R6aFEqlT7usFX9vLOYNRGzd3HIueXOT1iqiiGI1lm5u/iutxKH+8eS4q381oN WJL0jQdo4sv2MxtSHYrjpzPRQpSp/qrin29h3PVjwBjZF3i5WvFeTYgfjQEEkqe0 fpTXjUsr5n1F1pGV90DtJHwaD5TxKD4VYFLDRCDGUiAnWPkZ7EYUBL3SA6GqEkXB 1lVRPsEBo0y867/WQcoCZA/x7ANZDI6bDZ6fjumwx8OCZOHZeN6FGtqQJHcVZR5O +nu/j3I8YH1tZGKbA+wliyQwt/T60Oxs62HHcFzFLGakARwUEDYO53IGCJUByFwk kCrgNVvzFklwWpqqyTADqb5lkQKpZr5gIdpst185qttCQkb+EFWiCi9w2inXTjHl 2oCc7Uf0cvoxnhVlJAw73eGTtpqS37KCWK+iNyrQbOfy+hgIv+w= =zEHk -----END PGP SIGNATURE----- Merge tag 'asm-generic-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic updates from Arnd Bergmann: "These are a number of unrelated cleanups, generally simplifying the architecture specific header files: - A series from Al Viro simplifies asm/vga.h, after it turns out that most of it can be generalized. - A series from Julian Vetter adds a common version of memcpy_{to,from}io() and memset_io() and changes most architectures to use that instead of their own implementation - A series from Niklas Schnelle concludes his work to make PC style inb()/outb() optional - Nicolas Pitre contributes improvements for the generic do_div() helper - Christoph Hellwig adds a generic version of page_to_phys() and phys_to_page(), replacing the slightly different architecture specific definitions. - Uwe Kleine-Koenig has a minor cleanup for ioctl definitions" * tag 'asm-generic-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (24 commits) empty include/asm-generic/vga.h sparc: get rid of asm/vga.h asm/vga.h: don't bother with scr_mem{cpy,move}v() unless we need to vt_buffer.h: get rid of dead code in default scr_...() instances tty: serial: export serial_8250_warn_need_ioport lib/iomem_copy: fix kerneldoc format style hexagon: simplify asm/io.h for !HAS_IOPORT loongarch: Use new fallback IO memcpy/memset csky: Use new fallback IO memcpy/memset arm64: Use new fallback IO memcpy/memset New implementation for IO memcpy and IO memset watchdog: Add HAS_IOPORT dependency for SBC8360 and SBC7240 __arch_xprod64(): make __always_inline when optimizing for performance ARM: div64: improve __arch_xprod_64() asm-generic/div64: optimize/simplify __div64_const32() lib/math/test_div64: add some edge cases relevant to __div64_const32() asm-generic: add an optional pfn_valid check to page_to_phys asm-generic: provide generic page_to_phys and phys_to_page implementations asm-generic/io.h: Remove I/O port accessors for HAS_IOPORT=n tty: serial: handle HAS_IOPORT dependencies ...
180 lines
5.1 KiB
C
180 lines
5.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PARISC_PAGE_H
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#define _PARISC_PAGE_H
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#include <linux/const.h>
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#include <vdso/page.h>
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#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
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#ifndef __ASSEMBLY__
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#include <asm/types.h>
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#include <asm/cache.h>
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#define clear_page(page) clear_page_asm((void *)(page))
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#define copy_page(to, from) copy_page_asm((void *)(to), (void *)(from))
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struct page;
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struct vm_area_struct;
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void clear_page_asm(void *page);
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void copy_page_asm(void *to, void *from);
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#define clear_user_page(vto, vaddr, page) clear_page_asm(vto)
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void copy_user_highpage(struct page *to, struct page *from, unsigned long vaddr,
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struct vm_area_struct *vma);
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#define __HAVE_ARCH_COPY_USER_HIGHPAGE
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/*
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* These are used to make use of C type-checking..
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*/
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#define STRICT_MM_TYPECHECKS
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#ifdef STRICT_MM_TYPECHECKS
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typedef struct { unsigned long pte; } pte_t; /* either 32 or 64bit */
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/* NOTE: even on 64 bits, these entries are __u32 because we allocate
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* the pmd and pgd in ZONE_DMA (i.e. under 4GB) */
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typedef struct { __u32 pgd; } pgd_t;
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typedef struct { unsigned long pgprot; } pgprot_t;
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#if CONFIG_PGTABLE_LEVELS == 3
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typedef struct { __u32 pmd; } pmd_t;
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#define __pmd(x) ((pmd_t) { (x) } )
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/* pXd_val() do not work as lvalues, so make sure we don't use them as such. */
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#define pmd_val(x) ((x).pmd + 0)
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#endif
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#define pte_val(x) ((x).pte)
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#define pgd_val(x) ((x).pgd + 0)
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#define pgprot_val(x) ((x).pgprot)
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#define __pte(x) ((pte_t) { (x) } )
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#define __pgd(x) ((pgd_t) { (x) } )
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#define __pgprot(x) ((pgprot_t) { (x) } )
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#else
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/*
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* .. while these make it easier on the compiler
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*/
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typedef unsigned long pte_t;
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#if CONFIG_PGTABLE_LEVELS == 3
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typedef __u32 pmd_t;
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#define pmd_val(x) (x)
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#define __pmd(x) (x)
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#endif
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typedef __u32 pgd_t;
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typedef unsigned long pgprot_t;
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#define pte_val(x) (x)
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#define pgd_val(x) (x)
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#define pgprot_val(x) (x)
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#define __pte(x) (x)
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#define __pgd(x) (x)
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#define __pgprot(x) (x)
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#endif /* STRICT_MM_TYPECHECKS */
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#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
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#if CONFIG_PGTABLE_LEVELS == 3
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#define set_pud(pudptr, pudval) (*(pudptr) = (pudval))
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#endif
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typedef struct page *pgtable_t;
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typedef struct __physmem_range {
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unsigned long start_pfn;
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unsigned long pages; /* PAGE_SIZE pages */
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} physmem_range_t;
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extern physmem_range_t pmem_ranges[];
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extern int npmem_ranges;
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#endif /* !__ASSEMBLY__ */
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/* WARNING: The definitions below must match exactly to sizeof(pte_t)
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* etc
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*/
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#ifdef CONFIG_64BIT
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#define BITS_PER_PTE_ENTRY 3
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#define BITS_PER_PMD_ENTRY 2
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#define BITS_PER_PGD_ENTRY 2
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#else
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#define BITS_PER_PTE_ENTRY 2
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#define BITS_PER_PMD_ENTRY 2
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#define BITS_PER_PGD_ENTRY 2
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#endif
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#define PGD_ENTRY_SIZE (1UL << BITS_PER_PGD_ENTRY)
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#define PMD_ENTRY_SIZE (1UL << BITS_PER_PMD_ENTRY)
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#define PTE_ENTRY_SIZE (1UL << BITS_PER_PTE_ENTRY)
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#define LINUX_GATEWAY_SPACE 0
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/* This governs the relationship between virtual and physical addresses.
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* If you alter it, make sure to take care of our various fixed mapping
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* segments in fixmap.h */
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#ifdef CONFIG_64BIT
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#define __PAGE_OFFSET_DEFAULT (0x40000000) /* 1GB */
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#else
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#define __PAGE_OFFSET_DEFAULT (0x10000000) /* 256MB */
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#endif
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#if defined(BOOTLOADER)
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#define __PAGE_OFFSET (0) /* bootloader uses physical addresses */
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#else
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#define __PAGE_OFFSET __PAGE_OFFSET_DEFAULT
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#endif /* BOOTLOADER */
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#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
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/* The size of the gateway page (we leave lots of room for expansion) */
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#define GATEWAY_PAGE_SIZE 0x4000
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/* The start of the actual kernel binary---used in vmlinux.lds.S
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* Leave some space after __PAGE_OFFSET for detecting kernel null
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* ptr derefs */
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#define KERNEL_BINARY_TEXT_START (__PAGE_OFFSET + 0x100000)
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/* These macros don't work for 64-bit C code -- don't allow in C at all */
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#ifdef __ASSEMBLY__
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# define PA(x) ((x)-__PAGE_OFFSET)
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# define VA(x) ((x)+__PAGE_OFFSET)
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#endif
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#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
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#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
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#ifdef CONFIG_HUGETLB_PAGE
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#define HPAGE_SHIFT PMD_SHIFT /* fixed for transparent huge pages */
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#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
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#define HPAGE_MASK (~(HPAGE_SIZE - 1))
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#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
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#if defined(CONFIG_64BIT) && defined(CONFIG_PARISC_PAGE_SIZE_4KB)
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# define REAL_HPAGE_SHIFT 20 /* 20 = 1MB */
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# define _HUGE_PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_1M
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#elif !defined(CONFIG_64BIT) && defined(CONFIG_PARISC_PAGE_SIZE_4KB)
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# define REAL_HPAGE_SHIFT 22 /* 22 = 4MB */
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# define _HUGE_PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_4M
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#else
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# define REAL_HPAGE_SHIFT 24 /* 24 = 16MB */
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# define _HUGE_PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_16M
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#endif
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#endif /* CONFIG_HUGETLB_PAGE */
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#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
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#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
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#include <asm-generic/memory_model.h>
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#include <asm-generic/getorder.h>
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#include <asm/pdc.h>
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#define PAGE0 ((struct zeropage *)absolute_pointer(__PAGE_OFFSET))
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/* DEFINITION OF THE ZERO-PAGE (PAG0) */
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/* based on work by Jason Eckhardt (jason@equator.com) */
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#endif /* _PARISC_PAGE_H */
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