From 4b491ee94a034d6a5a7d90a6f1a822a3d76b53f0 Mon Sep 17 00:00:00 2001
From: Martin Fouilleul <martinfouilleul@gmail.com>
Date: Sun, 25 Jun 2023 17:28:31 +0200
Subject: [PATCH] - Defined mp_thread_local to nothing for Orca platforms
 (since this requires atomics, which we don't have yet). This allows use to
 enable bulk-memory without getting clang backend errors about missing tls and
 atomics. - Replaced memory copy/fill routines with builtins

---
 src/platform/orca_memory.c | 44 ++++----------------------------------
 src/platform/platform.h    | 10 ++++++---
 2 files changed, 11 insertions(+), 43 deletions(-)

diff --git a/src/platform/orca_memory.c b/src/platform/orca_memory.c
index 6b52925..08cce3c 100644
--- a/src/platform/orca_memory.c
+++ b/src/platform/orca_memory.c
@@ -30,58 +30,22 @@ mem_base_allocator* mem_base_allocator_default()
 	return(&base);
 }
 
-
-//TODO: implement malloc/realloc/free/memset/etc here...
-
-
 void* memset(void* b, int c, size_t n)
 {
-	for(size_t i = 0; i<n; i++)
-	{
-		((char*)b)[i] = (u8)c;
-	}
-	return(b);
+	return(__builtin_memset(b, c, n));
 }
 
 void* memcpy(void *restrict dst, const void *restrict src, size_t n)
 {
-	for(size_t i = 0; i<n; i++)
-	{
-		((char*)dst)[i] = ((char*)src)[i];
-	}
-	return(dst);
+	return(__builtin_memcpy(dst, src, n));
 }
 
 void* memmove(void *dst, const void *src, size_t n)
 {
-	if(src < dst)
-	{
-		for(size_t i = n-1; i>=0; i--)
-		{
-			((char*)dst)[i] = ((char*)src)[i];
-		}
-	}
-	else if(src > dst)
-	{
-		for(size_t i = 0; i<n; i++)
-		{
-			((char*)dst)[i] = ((char*)src)[i];
-		}
-	}
-	return(dst);
+	return(__builtin_memmove(dst, src, n));
 }
 
 int memcmp(const void *s1, const void *s2, size_t n)
 {
-	const unsigned char* c1 = (const unsigned char*)s1;
-	const unsigned char* c2 = (const unsigned char*)s2;
-
-	for(size_t i = 0; i<n; i++)
-	{
-		if(c1[i] != c2[i])
-		{
-			return(c1 - c2);
-		}
-	}
-	return(0);
+	return(__builtin_memcmp(s1, s2, n));
 }
diff --git a/src/platform/platform.h b/src/platform/platform.h
index 05c1637..4397334 100644
--- a/src/platform/platform.h
+++ b/src/platform/platform.h
@@ -86,11 +86,15 @@
 	#else
 		#define MP_API __declspec(dllimport)
 	#endif
-
-	#define mp_thread_local __declspec(thread)
-
 #elif defined(COMPILER_GCC) || defined(COMPILER_CLANG)
 	#define MP_API
+#endif
+
+#if PLATFORM_ORCA
+	#define mp_thread_local // no tls (or threads) for now on wasm orca
+#elif defined(COMPILER_CL)
+	#define mp_thread_local __declspec(thread)
+#elif defined(COMPILER_GCC) || defined(COMPILER_CLANG)
 	#define mp_thread_local __thread
 #endif