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authorGreg Ungerer <gerg@uclinux.org>2011-06-02 16:07:33 +1000
committerGreg Ungerer <gerg@uclinux.org>2011-06-14 11:42:29 +1000
commit734c3ce3bd4d51c932893b9f6d32b9ded31acdff (patch)
tree05e4d44e3828c8620595674341236e71c4f86e7e /arch/m68k/lib
parent62356725987fa44bbebeb656b2a0d8c803e32ef2 (diff)
downloadop-kernel-dev-734c3ce3bd4d51c932893b9f6d32b9ded31acdff.zip
op-kernel-dev-734c3ce3bd4d51c932893b9f6d32b9ded31acdff.tar.gz
m68k: use kernel processor defines for conditional optimizations
Older m68k-linux compilers will include pre-defined symbols that confuse what processor it is being targeted for. For example gcc-4.1.2 will pre-define __mc68020__ even if you specify the target processor as -m68000 on the gcc command line. Newer versions of gcc have this corrected. In a few places the m68k code uses defined(__mc68020__) for optimizations that include instructions that are specific to the CPU 68020 and above. When compiling with older compilers this will be true even when we have selected to compile for the older 68000 processors. Switch to using the kernel processor defines, CONFIG_M68020 and friends. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68k/lib')
-rw-r--r--arch/m68k/lib/memcpy.c9
-rw-r--r--arch/m68k/lib/memset.c9
-rw-r--r--arch/m68k/lib/muldi3.c21
3 files changed, 18 insertions, 21 deletions
diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c
index 62182c8..0648893 100644
--- a/arch/m68k/lib/memcpy.c
+++ b/arch/m68k/lib/memcpy.c
@@ -34,8 +34,10 @@ void *memcpy(void *to, const void *from, size_t n)
if (temp) {
long *lto = to;
const long *lfrom = from;
-#if defined(__mc68020__) || defined(__mc68030__) || \
- defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__)
+#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
+ for (; temp; temp--)
+ *lto++ = *lfrom++;
+#else
asm volatile (
" movel %2,%3\n"
" andw #7,%3\n"
@@ -56,9 +58,6 @@ void *memcpy(void *to, const void *from, size_t n)
" jpl 4b"
: "=a" (lfrom), "=a" (lto), "=d" (temp), "=&d" (temp1)
: "0" (lfrom), "1" (lto), "2" (temp));
-#else
- for (; temp; temp--)
- *lto++ = *lfrom++;
#endif
to = lto;
from = lfrom;
diff --git a/arch/m68k/lib/memset.c b/arch/m68k/lib/memset.c
index f649e6a..8a7639f 100644
--- a/arch/m68k/lib/memset.c
+++ b/arch/m68k/lib/memset.c
@@ -32,8 +32,10 @@ void *memset(void *s, int c, size_t count)
temp = count >> 2;
if (temp) {
long *ls = s;
-#if defined(__mc68020__) || defined(__mc68030__) || \
- defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__)
+#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
+ for (; temp; temp--)
+ *ls++ = c;
+#else
size_t temp1;
asm volatile (
" movel %1,%2\n"
@@ -55,9 +57,6 @@ void *memset(void *s, int c, size_t count)
" jpl 1b"
: "=a" (ls), "=d" (temp), "=&d" (temp1)
: "d" (c), "0" (ls), "1" (temp));
-#else
- for (; temp; temp--)
- *ls++ = c;
#endif
s = ls;
}
diff --git a/arch/m68k/lib/muldi3.c b/arch/m68k/lib/muldi3.c
index 079bafca..79e928a 100644
--- a/arch/m68k/lib/muldi3.c
+++ b/arch/m68k/lib/muldi3.c
@@ -19,17 +19,7 @@ along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#if defined(__mc68020__) || defined(__mc68030__) || \
- defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__)
-
-#define umul_ppmm(w1, w0, u, v) \
- __asm__ ("mulu%.l %3,%1:%0" \
- : "=d" ((USItype)(w0)), \
- "=d" ((USItype)(w1)) \
- : "%0" ((USItype)(u)), \
- "dmi" ((USItype)(v)))
-
-#else
+#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
#define SI_TYPE_SIZE 32
#define __BITS4 (SI_TYPE_SIZE / 4)
@@ -61,6 +51,15 @@ Boston, MA 02111-1307, USA. */
(w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \
} while (0)
+#else
+
+#define umul_ppmm(w1, w0, u, v) \
+ __asm__ ("mulu%.l %3,%1:%0" \
+ : "=d" ((USItype)(w0)), \
+ "=d" ((USItype)(w1)) \
+ : "%0" ((USItype)(u)), \
+ "dmi" ((USItype)(v)))
+
#endif
#define __umulsidi3(u, v) \
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