Only use __builtin_* with GCC >= 3.4

Fix gcc 3.3 builds, broken in revision 5465.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5466 c046a42c-6fe2-441c-8c8c-71466251a162

host-utils.h

@@ -51,7 +51,7 @@ void mulu64(uint64_t *phigh, uint64_t *plow, uint64_t a, uint64_t b);
 
 static always_inline int clz32(uint32_t val)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     if (val)
         return __builtin_clz(val);
     else
@@ -93,7 +93,7 @@ static always_inline int clo32(uint32_t val)
 
 static always_inline int clz64(uint64_t val)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     if (val)
         return __builtin_clzll(val);
     else
@@ -118,7 +118,7 @@ static always_inline int clo64(uint64_t val)
 
 static always_inline int ctz32 (uint32_t val)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     if (val)
         return __builtin_ctz(val);
     else
@@ -162,7 +162,7 @@ static always_inline int cto32 (uint32_t val)
 
 static always_inline int ctz64 (uint64_t val)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     if (val)
         return __builtin_ctz(val);
     else
@@ -206,7 +206,7 @@ static always_inline int ctpop16 (uint16_t val)
 
 static always_inline int ctpop32 (uint32_t val)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     return __builtin_popcount(val);
 #else
     val = (val & 0x55555555) + ((val >>  1) & 0x55555555);
@@ -221,7 +221,7 @@ static always_inline int ctpop32 (uint32_t val)
 
 static always_inline int ctpop64 (uint64_t val)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     return __builtin_popcountll(val);
 #else
     val = (val & 0x5555555555555555ULL) + ((val >>  1) & 0x5555555555555555ULL);

hw/apic.c

@@ -107,7 +107,7 @@ static void apic_update_irq(APICState *s);
 /* Find first bit starting from msb */
 static int fls_bit(uint32_t value)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     return 31 - __builtin_clz(value);
 #else
     unsigned int ret = 0;
@@ -127,7 +127,7 @@ static int fls_bit(uint32_t value)
 /* Find first bit starting from lsb */
 static int ffs_bit(uint32_t value)
 {
-#if defined(__GNUC__)
+#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     return __builtin_ffs(value) - 1;
 #else
     unsigned int ret = 0;