Make detection of unsupported hosts easier, inspired by a patch from

Stefan Weil.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2791 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 17 insertions, 42 deletions

diff --git a/dyngen.h b/dyngen.h
index e8bf72b..48e4019 100644
--- a/dyngen.h
+++ b/dyngen.h
@@ -28,25 +28,11 @@ int __op_param1, __op_param2, __op_param3;
 #endif
 int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
 
-#ifdef __i386__
+#if defined(__i386__) || defined(__x86_64__) || defined(__s390__)
 static inline void flush_icache_range(unsigned long start, unsigned long stop)
 {
 }
-#endif
-
-#ifdef __x86_64__
-static inline void flush_icache_range(unsigned long start, unsigned long stop)
-{
-}
-#endif
-
-#ifdef __s390__
-static inline void flush_icache_range(unsigned long start, unsigned long stop)
-{
-}
-#endif
-
-#ifdef __ia64__
+#elif defined(__ia64__)
 static inline void flush_icache_range(unsigned long start, unsigned long stop)
 {
     while (start < stop) {
@@ -55,9 +41,7 @@ static inline void flush_icache_range(unsigned long start, unsigned long stop)
     }
     asm volatile (";;sync.i;;srlz.i;;");
 }
-#endif
-
-#ifdef __powerpc__
+#elif defined(__powerpc__)
 
 #define MIN_CACHE_LINE_SIZE 8 /* conservative value */
 
@@ -78,17 +62,12 @@ static void inline flush_icache_range(unsigned long start, unsigned long stop)
     asm volatile ("sync" : : : "memory");
     asm volatile ("isync" : : : "memory");
 }
-#endif
-
-#ifdef __alpha__
+#elif defined(__alpha__)
 static inline void flush_icache_range(unsigned long start, unsigned long stop)
 {
     asm ("imb");
 }
-#endif
-
-#ifdef __sparc__
-
+#elif defined(__sparc__)
 static void inline flush_icache_range(unsigned long start, unsigned long stop)
 {
 	unsigned long p;
@@ -99,10 +78,7 @@ static void inline flush_icache_range(unsigned long start, unsigned long stop)
 	for (; p < stop; p += 8)
 		__asm__ __volatile__("flush\t%0" : : "r" (p));
 }
-
-#endif
-
-#ifdef __arm__
+#elif defined(__arm__)
 static inline void flush_icache_range(unsigned long start, unsigned long stop)
 {
     register unsigned long _beg __asm ("a1") = start;
@@ -110,14 +86,22 @@ static inline void flush_icache_range(unsigned long start, unsigned long stop)
     register unsigned long _flg __asm ("a3") = 0;
     __asm __volatile__ ("swi 0x9f0002" : : "r" (_beg), "r" (_end), "r" (_flg));
 }
-#endif
+#elif defined(__mc68000)
 
-#ifdef __mc68000
-#include <asm/cachectl.h>
+# include <asm/cachectl.h>
 static inline void flush_icache_range(unsigned long start, unsigned long stop)
 {
     cacheflush(start,FLUSH_SCOPE_LINE,FLUSH_CACHE_BOTH,stop-start+16);
 }
+#elif defined(__mips__)
+
+#include <sys/cachectl.h>
+static inline void flush_icache_range(unsigned long start, unsigned long stop)
+{
+    _flush_cache ((void *)start, stop - start, BCACHE);
+}
+#else
+#error unsupported CPU
 #endif
 
 #ifdef __alpha__
@@ -248,7 +232,6 @@ static uint8_t *arm_flush_ldr(uint8_t *gen_code_ptr,
 
 #ifdef __ia64
 
-
 /* Patch instruction with "val" where "mask" has 1 bits. */
 static inline void ia64_patch (uint64_t insn_addr, uint64_t mask, uint64_t val)
 {
@@ -463,11 +446,3 @@ static inline void ia64_apply_fixes (uint8_t **gen_code_pp,
 }
 
 #endif
-
-#ifdef __mips__
-#include <sys/cachectl.h>
-static inline void flush_icache_range(unsigned long start, unsigned long stop)
-{
-    _flush_cache ((void *)start, stop - start, BCACHE);
-}
-#endif