x86-host-specific performance improvement

If we're on an x86 host, we can do unaligned littleendian memory
references directly.  Just do'em.

1 files changed, 30 insertions, 0 deletions

diff --git a/nasmlib.c b/nasmlib.c
index b89c711..dc55ce8 100644
--- a/nasmlib.c
+++ b/nasmlib.c
@@ -361,6 +361,34 @@ int32_t seg_alloc(void)
     return (next_seg += 2) - 2;
 }
 
+#if X86_MEMORY
+
+void fwriteint16_t(int data, FILE * fp)
+{
+    uint16_t d = data;
+    fwrite(&d, 1, 2, fp);
+}
+
+void fwriteint32_t(int32_t data, FILE * fp)
+{
+    uint32_t d = data;
+    fwrite(&d, 1, 4, fp);
+}
+
+void fwriteint64_t(int64_t data, FILE * fp)
+{
+    uint64_t d = data;
+    fwrite(&d, 1, 8, fp);
+}
+
+void fwriteaddr(int64_t data, int size, FILE * fp)
+{
+    uint64_t d = data;
+    fwrite(&d, 1, size, fp);
+}
+
+#else /* !X86_MEMORY */
+
 void fwriteint16_t(int data, FILE * fp)
 {
     char buffer[2], *p = buffer;
@@ -389,6 +417,8 @@ void fwriteaddr(int64_t data, int size, FILE * fp)
     fwrite(buffer, 1, size, fp);
 }
 
+#endif
+
 void standard_extension(char *inname, char *outname, char *extension,
                         efunc error)
 {