1 files changed, 36 insertions, 41 deletions
diff --git a/lib/builtins/trampoline_setup.c b/lib/builtins/trampoline_setup.c
index 25b627ab7658..a62431723d78 100644
--- a/lib/builtins/trampoline_setup.c
+++ b/lib/builtins/trampoline_setup.c
@@ -1,48 +1,43 @@
-/* ===----- trampoline_setup.c - Implement __trampoline_setup -------------===
- *
- *                     The LLVM Compiler Infrastructure
- *
- * This file is dual licensed under the MIT and the University of Illinois Open
- * Source Licenses. See LICENSE.TXT for details.
- *
- * ===----------------------------------------------------------------------===
- */
+//===----- trampoline_setup.c - Implement __trampoline_setup -------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
 
 #include "int_lib.h"
 
-extern void __clear_cache(void* start, void* end);
+extern void __clear_cache(void *start, void *end);
 
-/*
- * The ppc compiler generates calls to __trampoline_setup() when creating 
- * trampoline functions on the stack for use with nested functions.
- * This function creates a custom 40-byte trampoline function on the stack 
- * which loads r11 with a pointer to the outer function's locals
- * and then jumps to the target nested function.
- */
+// The ppc compiler generates calls to __trampoline_setup() when creating
+// trampoline functions on the stack for use with nested functions.
+// This function creates a custom 40-byte trampoline function on the stack
+// which loads r11 with a pointer to the outer function's locals
+// and then jumps to the target nested function.
 
 #if __ppc__ && !defined(__powerpc64__)
-COMPILER_RT_ABI void
-__trampoline_setup(uint32_t* trampOnStack, int trampSizeAllocated, 
-                   const void* realFunc, void* localsPtr)
-{
-    /* should never happen, but if compiler did not allocate */
-    /* enough space on stack for the trampoline, abort */
-    if ( trampSizeAllocated < 40 )
-        compilerrt_abort();
-    
-    /* create trampoline */
-    trampOnStack[0] = 0x7c0802a6;    /* mflr r0 */
-    trampOnStack[1] = 0x4800000d;    /* bl Lbase */
-    trampOnStack[2] = (uint32_t)realFunc;
-    trampOnStack[3] = (uint32_t)localsPtr;
-    trampOnStack[4] = 0x7d6802a6;    /* Lbase: mflr r11 */
-    trampOnStack[5] = 0x818b0000;    /* lwz    r12,0(r11) */
-    trampOnStack[6] = 0x7c0803a6;    /* mtlr r0 */
-    trampOnStack[7] = 0x7d8903a6;    /* mtctr r12 */
-    trampOnStack[8] = 0x816b0004;    /* lwz    r11,4(r11) */
-    trampOnStack[9] = 0x4e800420;    /* bctr */
-    
-    /* clear instruction cache */
-    __clear_cache(trampOnStack, &trampOnStack[10]);
+COMPILER_RT_ABI void __trampoline_setup(uint32_t *trampOnStack,
+                                        int trampSizeAllocated,
+                                        const void *realFunc, void *localsPtr) {
+  // should never happen, but if compiler did not allocate
+  // enough space on stack for the trampoline, abort
+  if (trampSizeAllocated < 40)
+    compilerrt_abort();
+
+  // create trampoline
+  trampOnStack[0] = 0x7c0802a6; // mflr r0
+  trampOnStack[1] = 0x4800000d; // bl Lbase
+  trampOnStack[2] = (uint32_t)realFunc;
+  trampOnStack[3] = (uint32_t)localsPtr;
+  trampOnStack[4] = 0x7d6802a6; // Lbase: mflr r11
+  trampOnStack[5] = 0x818b0000; // lwz    r12,0(r11)
+  trampOnStack[6] = 0x7c0803a6; // mtlr r0
+  trampOnStack[7] = 0x7d8903a6; // mtctr r12
+  trampOnStack[8] = 0x816b0004; // lwz    r11,4(r11)
+  trampOnStack[9] = 0x4e800420; // bctr
+
+  // clear instruction cache
+  __clear_cache(trampOnStack, &trampOnStack[10]);
 }
-#endif /* __ppc__ && !defined(__powerpc64__) */
+#endif // __ppc__ && !defined(__powerpc64__)