linux/arch/m68k/include/asm/div64.h

#ifndef _M68K_DIV64_H
#define _M68K_DIV64_H

#ifdef CONFIG_MMU

#include <linux/types.h>

/* n = n / base; return rem; */

#define do_div(n, base) ({					\
	union {							\
		unsigned long n32[2];				\
		unsigned long long n64;				\
	} __n;							\
	unsigned long __rem, __upper;				\
								\
	__n.n64 = (n);						\
	if ((__upper = __n.n32[0])) {				\
		asm ("divul.l %2,%1:%0"				\
			: "=d" (__n.n32[0]), "=d" (__upper)	\
			: "d" (base), "0" (__n.n32[0]));	\
	}							\
	asm ("divu.l %2,%1:%0"					\
		: "=d" (__n.n32[1]), "=d" (__rem)		\
		: "d" (base), "1" (__upper), "0" (__n.n32[1]));	\
	(n) = __n.n64;						\
	__rem;							\
})

#else
#include <asm-generic/div64.h>
#endif /* CONFIG_MMU */

#endif /* _M68K_DIV64_H */
m68k: merge the mmu and non-mmu versions of div64.h Trivial merge of the mmu and non-mmu versions of div64.h Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> 2009-02-06 14:50:08 +10:00			`#ifndef _M68K_DIV64_H`
			`#define _M68K_DIV64_H`

			`#ifdef CONFIG_MMU`

			`#include <linux/types.h>`

			`/* n = n / base; return rem; */`

			`#define do_div(n, base) ({ \`
			`union { \`
			`unsigned long n32[2]; \`
			`unsigned long long n64; \`
			`} __n; \`
			`unsigned long __rem, __upper; \`
			`\`
			`__n.n64 = (n); \`
			`if ((__upper = __n.n32[0])) { \`
			`asm ("divul.l %2,%1:%0" \`
			`: "=d" (__n.n32[0]), "=d" (__upper) \`
			`: "d" (base), "0" (__n.n32[0])); \`
			`} \`
			`asm ("divu.l %2,%1:%0" \`
			`: "=d" (__n.n32[1]), "=d" (__rem) \`
			`: "d" (base), "1" (__upper), "0" (__n.n32[1])); \`
			`(n) = __n.n64; \`
			`__rem; \`
			`})`

m68k,m68knommu: merge header files Merge header files for m68k and m68knommu to the single location: arch/m68k/include/asm The majority of this patch was the result of the script that is included in the changelog below. The script was originally written by Arnd Bergman and exten by me to cover a few more files. When the header files differed the script uses the following: The original m68k file is named <file>_mm.h [mm for memory manager] The m68knommu file is named <file>_no.h [no for no memory manager] The files uses the following include guard: This include gaurd works as the m68knommu toolchain set the __uClinux__ symbol - so this should work in userspace too. Merging the header files for m68k and m68knommu exposes the (unexpected?) ABI differences thus it is easier to actually identify these and thus to fix them. The commit has been build tested with both a m68k and a m68knommu toolchain - with success. The commit has also been tested with "make headers_check" and this patch fixes make headers_check for m68knommu. The script used: TARGET=arch/m68k/include/asm SOURCE=arch/m68knommu/include/asm INCLUDE="cachectl.h errno.h fcntl.h hwtest.h ioctls.h ipcbuf.h \ linkage.h math-emu.h md.h mman.h movs.h msgbuf.h openprom.h \ oplib.h poll.h posix_types.h resource.h rtc.h sembuf.h shmbuf.h \ shm.h shmparam.h socket.h sockios.h spinlock.h statfs.h stat.h \ termbits.h termios.h tlb.h types.h user.h" EQUAL="auxvec.h cputime.h device.h emergency-restart.h futex.h \ ioctl.h irq_regs.h kdebug.h local.h mutex.h percpu.h \ sections.h topology.h" NOMUUFILES="anchor.h bootstd.h coldfire.h commproc.h dbg.h \ elia.h flat.h m5206sim.h m520xsim.h m523xsim.h m5249sim.h \ m5272sim.h m527xsim.h m528xsim.h m5307sim.h m532xsim.h \ m5407sim.h m68360_enet.h m68360.h m68360_pram.h m68360_quicc.h \ m68360_regs.h MC68328.h MC68332.h MC68EZ328.h MC68VZ328.h \ mcfcache.h mcfdma.h mcfmbus.h mcfne.h mcfpci.h mcfpit.h \ mcfsim.h mcfsmc.h mcftimer.h mcfuart.h mcfwdebug.h \ nettel.h quicc_simple.h smp.h" FILES="atomic.h bitops.h bootinfo.h bug.h bugs.h byteorder.h cache.h \ cacheflush.h checksum.h current.h delay.h div64.h \ dma-mapping.h dma.h elf.h entry.h fb.h fpu.h hardirq.h hw_irq.h io.h \ irq.h kmap_types.h machdep.h mc146818rtc.h mmu.h mmu_context.h \ module.h page.h page_offset.h param.h pci.h pgalloc.h \ pgtable.h processor.h ptrace.h scatterlist.h segment.h \ setup.h sigcontext.h siginfo.h signal.h string.h system.h swab.h \ thread_info.h timex.h tlbflush.h traps.h uaccess.h ucontext.h \ unaligned.h unistd.h" mergefile() { BASE=${1%.h} git mv ${SOURCE}/$1 ${TARGET}/${BASE}_no.h git mv ${TARGET}/$1 ${TARGET}/${BASE}_mm.h cat << EOF > ${TARGET}/$1 EOF git add ${TARGET}/$1 } set -e mkdir -p ${TARGET} git mv include/asm-m68k/* ${TARGET} rmdir include/asm-m68k git rm ${SOURCE}/Kbuild for F in $INCLUDE $EQUAL; do git rm ${SOURCE}/$F done for F in $NOMUUFILES; do git mv ${SOURCE}/$F ${TARGET}/$F done for F in $FILES ; do mergefile $F done rmdir arch/m68knommu/include/asm rmdir arch/m68knommu/include Cc: Arnd Bergmann <arnd@arndb.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org> 2009-01-16 21:58:10 +10:00			`#else`
m68k: merge the mmu and non-mmu versions of div64.h Trivial merge of the mmu and non-mmu versions of div64.h Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> 2009-02-06 14:50:08 +10:00			`#include <asm-generic/div64.h>`
			`#endif /* CONFIG_MMU */`

			`#endif /* _M68K_DIV64_H */`