From 734c3ce3bd4d51c932893b9f6d32b9ded31acdff Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Thu, 2 Jun 2011 16:07:33 +1000 Subject: [PATCH] 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 --- arch/m68k/kernel/m68k_ksyms.c | 3 +-- arch/m68k/lib/memcpy.c | 9 ++++----- arch/m68k/lib/memset.c | 9 ++++----- arch/m68k/lib/muldi3.c | 21 ++++++++++----------- 4 files changed, 19 insertions(+), 23 deletions(-) diff --git a/arch/m68k/kernel/m68k_ksyms.c b/arch/m68k/kernel/m68k_ksyms.c index 33f82769547c..1b7a14d1a000 100644 --- a/arch/m68k/kernel/m68k_ksyms.c +++ b/arch/m68k/kernel/m68k_ksyms.c @@ -14,8 +14,7 @@ EXPORT_SYMBOL(__ashrdi3); EXPORT_SYMBOL(__lshrdi3); EXPORT_SYMBOL(__muldi3); -#if !defined(__mc68020__) && !defined(__mc68030__) && \ - !defined(__mc68040__) && !defined(__mc68060__) && !defined(__mcpu32__) +#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE) /* * Simpler 68k and ColdFire parts also need a few other gcc functions. */ diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c index 62182c81e91c..064889316974 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 f649e6a2e644..8a7639f0a2fe 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 079bafca073e..79e928a525d0 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) \ -- 2.20.1