diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 34d10c9..b99e9ca 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -279,7 +279,7 @@ jobs:
         - {target: riscv64, toolchain: gcc-riscv64-linux-gnu,     cc: riscv64-linux-gnu-gcc,      qemu: qemu-riscv64-static }
         - {target: ppc,     toolchain: gcc-powerpc-linux-gnu,     cc: powerpc-linux-gnu-gcc,      qemu: qemu-ppc-static     }
         - {target: ppc64,   toolchain: gcc-powerpc64-linux-gnu,   cc: powerpc64-linux-gnu-gcc,    qemu: qemu-ppc64-static   }
-        - {target: ppc64le, toolchain: gcc-powerpc64le-linux-gnu, cc: powerpc64le-linux-gnu-gcc,  qemu: qemu-ppc64le-static }
+        #- {target: ppc64le, toolchain: gcc-powerpc64le-linux-gnu, cc: powerpc64le-linux-gnu-gcc,  qemu: qemu-ppc64le-static }
         - {target: s390x,   toolchain: gcc-s390x-linux-gnu,       cc: s390x-linux-gnu-gcc,        qemu: qemu-s390x-static   }
         - {target: mips,    toolchain: gcc-mips-linux-gnu,          cc: mips-linux-gnu-gcc,         qemu: qemu-mips-static     }
         - {target: mips64,  toolchain: gcc-mips64-linux-gnuabi64,   cc: mips64-linux-gnuabi64-gcc,  qemu: qemu-mips64-static   }
diff --git a/source/m3_api_defs.h b/source/m3_api_defs.h
index 992805a..d5010cf 100644
--- a/source/m3_api_defs.h
+++ b/source/m3_api_defs.h
@@ -18,7 +18,7 @@
 #define m3ApiGetArg(TYPE, NAME)    TYPE NAME = * ((TYPE *) (_sp++));
 #define m3ApiGetArgMem(TYPE, NAME) TYPE NAME = (TYPE)m3ApiOffsetToPtr(* ((u32 *) (_sp++)));
 
-# define m3ApiIsNullPtr(addr)	   ((void*)(addr) <= _mem)
+# define m3ApiIsNullPtr(addr)      ((void*)(addr) <= _mem)
 
 #if d_m3SkipMemoryBoundsCheck
 # define m3ApiCheckMem(off, len)
diff --git a/source/m3_api_libc.c b/source/m3_api_libc.c
index e4a87f0..a88f136 100644
--- a/source/m3_api_libc.c
+++ b/source/m3_api_libc.c
@@ -37,9 +37,9 @@ m3ApiRawFunction(m3_libc_memset)
 {
     m3ApiReturnType (int32_t)
 
-    m3ApiGetArgMem  (void*,   		i_ptr)
-    m3ApiGetArg     (int32_t, 		i_value)
-    m3ApiGetArg     (wasm_size_t, 	i_size)
+    m3ApiGetArgMem  (void*,           i_ptr)
+    m3ApiGetArg     (int32_t,         i_value)
+    m3ApiGetArg     (wasm_size_t,     i_size)
 
     m3ApiCheckMem(i_ptr, i_size);
 
@@ -51,9 +51,9 @@ m3ApiRawFunction(m3_libc_memmove)
 {
     m3ApiReturnType (int32_t)
 
-    m3ApiGetArgMem  (void*,   		o_dst)
-    m3ApiGetArgMem  (void*,   		i_src)
-    m3ApiGetArg     (wasm_size_t, 	i_size)
+    m3ApiGetArgMem  (void*,           o_dst)
+    m3ApiGetArgMem  (void*,           i_src)
+    m3ApiGetArg     (wasm_size_t,     i_size)
 
     m3ApiCheckMem(o_dst, i_size);
     m3ApiCheckMem(i_src, i_size);
@@ -66,8 +66,8 @@ m3ApiRawFunction(m3_libc_print)
 {
     m3ApiReturnType (uint32_t)
 
-    m3ApiGetArgMem  (void*,    		i_ptr)
-    m3ApiGetArg     (wasm_size_t, 	i_size)
+    m3ApiGetArgMem  (void*,           i_ptr)
+    m3ApiGetArg     (wasm_size_t,     i_size)
 
     m3ApiCheckMem(i_ptr, i_size);
 
@@ -109,12 +109,12 @@ m3ApiRawFunction(m3_libc_printf)
 {
     m3ApiReturnType (int32_t)
 
-    m3ApiGetArgMem  (const char*,   i_fmt)
-    m3ApiGetArgMem  (wasm_ptr_t*,	i_args)
+    m3ApiGetArgMem  (const char*,    i_fmt)
+    m3ApiGetArgMem  (wasm_ptr_t*,    i_args)
 
-	if (m3ApiIsNullPtr(i_fmt)) {
-		m3ApiReturn(0);
-	}
+    if (m3ApiIsNullPtr(i_fmt)) {
+        m3ApiReturn(0);
+    }
 
     m3ApiCheckMem(i_fmt, 1);
     size_t fmt_len = strnlen(i_fmt, 1024);
@@ -154,10 +154,10 @@ m3ApiRawFunction(m3_libc_printf)
                 const char* string_temp;
                 size_t string_len;
 
-                string_temp = m3ApiOffsetToPtr(*i_args++);
+                string_temp = (const char*)m3ApiOffsetToPtr(*i_args++);
                 if (m3ApiIsNullPtr(string_temp)) {
-                	string_temp = "(null)";
-                	string_len = 6;
+                    string_temp = "(null)";
+                    string_len = 6;
                 } else {
                     string_len = strnlen(string_temp, 1024);
                     m3ApiCheckMem(string_temp, string_len+1);