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>

1 files changed, 315 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/math-emu.h b/arch/m68k/include/asm/math-emu.h
new file mode 100644
index 000000000000..ddfab96403cb
--- /dev/null
+++ b/arch/m68k/include/asm/math-emu.h
@@ -0,0 +1,315 @@
+#ifndef _ASM_M68K_SETUP_H
+#define _ASM_M68K_SETUP_H
+
+#include <asm/setup.h>
+#include <linux/linkage.h>
+
+/* Status Register bits */
+
+/* accrued exception bits */
+#define FPSR_AEXC_INEX  3
+#define FPSR_AEXC_DZ    4
+#define FPSR_AEXC_UNFL  5
+#define FPSR_AEXC_OVFL  6
+#define FPSR_AEXC_IOP   7
+
+/* exception status bits */
+#define FPSR_EXC_INEX1  8
+#define FPSR_EXC_INEX2  9
+#define FPSR_EXC_DZ     10
+#define FPSR_EXC_UNFL   11
+#define FPSR_EXC_OVFL   12
+#define FPSR_EXC_OPERR  13
+#define FPSR_EXC_SNAN   14
+#define FPSR_EXC_BSUN   15
+
+/* quotient byte, assumes big-endian, of course */
+#define FPSR_QUOTIENT(fpsr) (*((signed char *) &(fpsr) + 1))
+
+/* condition code bits */
+#define FPSR_CC_NAN     24
+#define FPSR_CC_INF     25
+#define FPSR_CC_Z       26
+#define FPSR_CC_NEG     27
+
+
+/* Control register bits */
+
+/* rounding mode */
+#define FPCR_ROUND_RN   0               /* round to nearest/even */
+#define FPCR_ROUND_RZ   1               /* round to zero */
+#define FPCR_ROUND_RM   2               /* minus infinity */
+#define FPCR_ROUND_RP   3               /* plus infinity */
+
+/* rounding precision */
+#define FPCR_PRECISION_X        0       /* long double */
+#define FPCR_PRECISION_S        1       /* double */
+#define FPCR_PRECISION_D        2       /* float */
+
+
+/* Flags to select the debugging output */
+#define PDECODE         0
+#define PEXECUTE        1
+#define PCONV           2
+#define PNORM           3
+#define PREGISTER       4
+#define PINSTR          5
+#define PUNIMPL         6
+#define PMOVEM          7
+
+#define PMDECODE        (1<<PDECODE)
+#define PMEXECUTE       (1<<PEXECUTE)
+#define PMCONV          (1<<PCONV)
+#define PMNORM          (1<<PNORM)
+#define PMREGISTER      (1<<PREGISTER)
+#define PMINSTR         (1<<PINSTR)
+#define PMUNIMPL        (1<<PUNIMPL)
+#define PMMOVEM         (1<<PMOVEM)
+
+#ifndef __ASSEMBLY__
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+union fp_mant64 {
+        unsigned long long m64;
+        unsigned long m32[2];
+};
+
+union fp_mant128 {
+        unsigned long long m64[2];
+        unsigned long m32[4];
+};
+
+/* internal representation of extended fp numbers */
+struct fp_ext {
+        unsigned char lowmant;
+        unsigned char sign;
+        unsigned short exp;
+        union fp_mant64 mant;
+};
+
+/* C representation of FPU registers */
+/* NOTE: if you change this, you have to change the assembler offsets
+   below and the size in <asm/fpu.h>, too */
+struct fp_data {
+        struct fp_ext fpreg[8];
+        unsigned int fpcr;
+        unsigned int fpsr;
+        unsigned int fpiar;
+        unsigned short prec;
+        unsigned short rnd;
+        struct fp_ext temp[2];
+};
+
+#ifdef FPU_EMU_DEBUG
+extern unsigned int fp_debugprint;
+
+#define dprint(bit, fmt, args...) ({                    \
+        if (fp_debugprint & (1 << (bit)))               \
+                printk(fmt, ## args);                   \
+})
+#else
+#define dprint(bit, fmt, args...)
+#endif
+
+#define uprint(str) ({                                  \
+        static int __count = 3;                         \
+                                                        \
+        if (__count > 0) {                              \
+                printk("You just hit an unimplemented " \
+                       "fpu instruction (%s)\n", str);  \
+                printk("Please report this to ....\n"); \
+                __count--;                              \
+        }                                               \
+})
+
+#define FPDATA          ((struct fp_data *)current->thread.fp)
+
+#else   /* __ASSEMBLY__ */
+
+#define FPDATA          %a2
+
+/* offsets from the base register to the floating point data in the task struct */
+#define FPD_FPREG       (TASK_THREAD+THREAD_FPREG+0)
+#define FPD_FPCR        (TASK_THREAD+THREAD_FPREG+96)
+#define FPD_FPSR        (TASK_THREAD+THREAD_FPREG+100)
+#define FPD_FPIAR       (TASK_THREAD+THREAD_FPREG+104)
+#define FPD_PREC        (TASK_THREAD+THREAD_FPREG+108)
+#define FPD_RND         (TASK_THREAD+THREAD_FPREG+110)
+#define FPD_TEMPFP1     (TASK_THREAD+THREAD_FPREG+112)
+#define FPD_TEMPFP2     (TASK_THREAD+THREAD_FPREG+124)
+#define FPD_SIZEOF      (TASK_THREAD+THREAD_FPREG+136)
+
+/* offsets on the stack to access saved registers,
+ * these are only used during instruction decoding
+ * where we always know how deep we're on the stack.
+ */
+#define FPS_DO          (PT_D0)
+#define FPS_D1          (PT_D1)
+#define FPS_D2          (PT_D2)
+#define FPS_A0          (PT_A0)
+#define FPS_A1          (PT_A1)
+#define FPS_A2          (PT_A2)
+#define FPS_SR          (PT_SR)
+#define FPS_PC          (PT_PC)
+#define FPS_EA          (PT_PC+6)
+#define FPS_PC2         (PT_PC+10)
+
+.macro  fp_get_fp_reg
+        lea     (FPD_FPREG,FPDATA,%d0.w*4),%a0
+        lea     (%a0,%d0.w*8),%a0
+.endm
+
+/* Macros used to get/put the current program counter.
+ * 020/030 use a different stack frame then 040/060, for the
+ * 040/060 the return pc points already to the next location,
+ * so this only needs to be modified for jump instructions.
+ */
+.macro  fp_get_pc dest
+        move.l  (FPS_PC+4,%sp),\dest
+.endm
+
+.macro  fp_put_pc src,jump=0
+        move.l  \src,(FPS_PC+4,%sp)
+.endm
+
+.macro  fp_get_instr_data       f,s,dest,label
+        getuser \f,%sp@(FPS_PC+4)@(0),\dest,\label,%sp@(FPS_PC+4)
+        addq.l  #\s,%sp@(FPS_PC+4)
+.endm
+
+.macro  fp_get_instr_word       dest,label,addr
+        fp_get_instr_data       w,2,\dest,\label,\addr
+.endm
+
+.macro  fp_get_instr_long       dest,label,addr
+        fp_get_instr_data       l,4,\dest,\label,\addr
+.endm
+
+/* These macros are used to read from/write to user space
+ * on error we jump to the fixup section, load the fault
+ * address into %a0 and jump to the exit.
+ * (derived from <asm/uaccess.h>)
+ */
+.macro  getuser size,src,dest,label,addr
+|       printf  ,"[\size<%08x]",1,\addr
+.Lu1\@: moves\size      \src,\dest
+
+        .section .fixup,"ax"
+        .even
+.Lu2\@: move.l  \addr,%a0
+        jra     \label
+        .previous
+
+        .section __ex_table,"a"
+        .align  4
+        .long   .Lu1\@,.Lu2\@
+        .previous
+.endm
+
+.macro  putuser size,src,dest,label,addr
+|       printf  ,"[\size>%08x]",1,\addr
+.Lu1\@: moves\size      \src,\dest
+.Lu2\@:
+
+        .section .fixup,"ax"
+        .even
+.Lu3\@: move.l  \addr,%a0
+        jra     \label
+        .previous
+
+        .section __ex_table,"a"
+        .align  4
+        .long   .Lu1\@,.Lu3\@
+        .long   .Lu2\@,.Lu3\@
+        .previous
+.endm
+
+/* work around binutils idiocy */
+old_gas=-1
+.irp    gas_ident.x .x
+old_gas=old_gas+1
+.endr
+.if !old_gas
+.irp    m b,w,l
+.macro  getuser.\m src,dest,label,addr
+        getuser .\m,\src,\dest,\label,\addr
+.endm
+.macro  putuser.\m src,dest,label,addr
+        putuser .\m,\src,\dest,\label,\addr
+.endm
+.endr
+.endif
+
+.macro  movestack       nr,arg1,arg2,arg3,arg4,arg5
+        .if     \nr
+        movestack       (\nr-1),\arg2,\arg3,\arg4,\arg5
+        move.l  \arg1,-(%sp)
+        .endif
+.endm
+
+.macro  printf  bit=-1,string,nr=0,arg1,arg2,arg3,arg4,arg5
+#ifdef FPU_EMU_DEBUG
+        .data
+.Lpdata\@:
+        .string "\string"
+        .previous
+
+        movem.l %d0/%d1/%a0/%a1,-(%sp)
+        .if     \bit+1
+#if 0
+        moveq   #\bit,%d0
+        andw    #7,%d0
+        btst    %d0,fp_debugprint+((31-\bit)/8)
+#else
+        btst    #\bit,fp_debugprint+((31-\bit)/8)
+#endif
+        jeq     .Lpskip\@
+        .endif
+        movestack       \nr,\arg1,\arg2,\arg3,\arg4,\arg5
+        pea     .Lpdata\@
+        jsr     printk
+        lea     ((\nr+1)*4,%sp),%sp
+.Lpskip\@:
+        movem.l (%sp)+,%d0/%d1/%a0/%a1
+#endif
+.endm
+
+.macro  printx  bit,fp
+#ifdef FPU_EMU_DEBUG
+        movem.l %d0/%a0,-(%sp)
+        lea     \fp,%a0
+#if 0
+        moveq   #'+',%d0
+        tst.w   (%a0)
+        jeq     .Lx1\@
+        moveq   #'-',%d0
+.Lx1\@: printf  \bit," %c",1,%d0
+        move.l  (4,%a0),%d0
+        bclr    #31,%d0
+        jne     .Lx2\@
+        printf  \bit,"0."
+        jra     .Lx3\@
+.Lx2\@: printf  \bit,"1."
+.Lx3\@: printf  \bit,"%08x%08x",2,%d0,%a0@(8)
+        move.w  (2,%a0),%d0
+        ext.l   %d0
+        printf  \bit,"E%04x",1,%d0
+#else
+        printf  \bit," %08x%08x%08x",3,%a0@,%a0@(4),%a0@(8)
+#endif
+        movem.l (%sp)+,%d0/%a0
+#endif
+.endm
+
+.macro  debug   instr,args
+#ifdef FPU_EMU_DEBUG
+        \instr  \args
+#endif
+.endm
+
+
+#endif  /* __ASSEMBLY__ */
+
+#endif  /* _ASM_M68K_SETUP_H */