system/physmem: Inline and remove leul_to_cpu()

leul_to_cpu() is only used within physmem.c: inline it
and remove.
Since @bitmap is of 'unsigned long' type, use its size
with ldn_le_p() instead of using HOST_LONG_BITS.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20260109165058.59144-4-philmd@linaro.org>

include/qemu/bswap.h

@@ -375,17 +375,6 @@ static inline void stq_be_p(void *ptr, uint64_t v)
     stq_he_p(ptr, be_bswap(v, 64));
 }
 
-static inline unsigned long leul_to_cpu(unsigned long v)
-{
-#if HOST_LONG_BITS == 32
-    return le_bswap(v, 32);
-#elif HOST_LONG_BITS == 64
-    return le_bswap(v, 64);
-#else
-# error Unknown sizeof long
-#endif
-}
-
 /* Store v to p as a sz byte value in host order */
 #define DO_STN_LDN_P(END) \
     static inline void stn_## END ## _p(void *ptr, int sz, uint64_t v)  \

system/physmem.c

@@ -1272,7 +1272,8 @@ uint64_t physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
 
             for (k = 0; k < nr; k++) {
                 if (bitmap[k]) {
-                    unsigned long temp = leul_to_cpu(bitmap[k]);
+                    unsigned long temp = ldn_le_p(&bitmap[k],
+                                                  sizeof(bitmap[k]));
 
                     nbits = ctpopl(temp);
                     qatomic_or(&blocks[DIRTY_MEMORY_VGA][idx][offset], temp);
@@ -1319,7 +1320,7 @@ uint64_t physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
          */
         for (i = 0; i < len; i++) {
             if (bitmap[i] != 0) {
-                c = leul_to_cpu(bitmap[i]);
+                c = ldn_le_p(&bitmap[i], sizeof(bitmap[i]));
                 nbits = ctpopl(c);
                 if (unlikely(global_dirty_tracking & GLOBAL_DIRTY_DIRTY_RATE)) {
                     total_dirty_pages += nbits;