Add a mem_copy_fixed and mem_set_fixed to mem.h

Probably self-explanatory. I was finding more use cases for the
__builtin_memcpy_inline thing but boy is that ugly.

1 files changed, 2 insertions, 4 deletions

diff --git a/src/sst.c b/src/sst.c
index ab78b9c..4cdad5d 100644
--- a/src/sst.c
+++ b/src/sst.c
@@ -197,11 +197,9 @@ c:	mem_copy(r, p + slash + 1, rellen);
 	if_cold (f == -1) { errmsg_errorsys("couldn't open %" fS, path); return; }
 #ifdef _WIN32
 	char buf[19 + PATH_MAX];
-	// XXX: with actual calls to memcpy gone, we need this builtin to produce 4
-	// 4-byte movs from this string; can we expose this in a less hideous way?
-	__builtin_memcpy_inline(buf, "Plugin { file \"", 15);
+	mem_copy_fixed(buf, "Plugin { file \"", 15);
 	for (int i = 0; i < rellen; ++i) buf[i + 15] = relpath[i];
-	__builtin_memcpy_inline(buf + 15 + rellen, "\" }\n", 4);
+	mem_copy_fixed(buf + 15 + rellen, "\" }\n", 4);
 	if_cold (os_write(f, buf, rellen + 19) == -1) { // blegh
 #else
 	struct iovec iov[3] = {