Fixup C++ style comments are not allowed in ISO C90 to classic C style.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@78152 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/gcc_personality_v0.c b/lib/gcc_personality_v0.c
index 55d1166..249f0f0 100644
--- a/lib/gcc_personality_v0.c
+++ b/lib/gcc_personality_v0.c
@@ -1,20 +1,23 @@
-//===-- gcc_personality_v0.c - Implement __gcc_personality_v0 -------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
+/* ===-- gcc_personality_v0.c - Implement __gcc_personality_v0 -------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ */
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
-//
-// _Unwind_* stuff based on C++ ABI public documentation
-// http://refspecs.freestandards.org/abi-eh-1.21.html
-//
+/*
+ * _Unwind_* stuff based on C++ ABI public documentation
+ * http://refspecs.freestandards.org/abi-eh-1.21.html
+ */
+
typedef enum {
_URC_NO_REASON = 0,
_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
@@ -52,11 +55,12 @@
extern uintptr_t _Unwind_GetRegionStart(_Unwind_Context_t context);
-//
-// Pointer encodings documented at:
-// http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html
-//
-#define DW_EH_PE_omit 0xff // no data follows
+/*
+ * Pointer encodings documented at:
+ * http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html
+ */
+
+#define DW_EH_PE_omit 0xff /* no data follows */
#define DW_EH_PE_absptr 0x00
#define DW_EH_PE_uleb128 0x01
@@ -73,11 +77,11 @@
#define DW_EH_PE_datarel 0x30
#define DW_EH_PE_funcrel 0x40
#define DW_EH_PE_aligned 0x50
-#define DW_EH_PE_indirect 0x80 // gcc extension
+#define DW_EH_PE_indirect 0x80 /* gcc extension */
-// read a uleb128 encoded value and advance pointer
+/* read a uleb128 encoded value and advance pointer */
static uintptr_t readULEB128(const uint8_t** data)
{
uintptr_t result = 0;
@@ -93,7 +97,7 @@
return result;
}
-// read a pointer encoded value and advance pointer
+/* read a pointer encoded value and advance pointer */
static uintptr_t readEncodedPointer(const uint8_t** data, uint8_t encoding)
{
const uint8_t* p = *data;
@@ -102,7 +106,7 @@
if ( encoding == DW_EH_PE_omit )
return 0;
- // first get value
+ /* first get value */
switch (encoding & 0x0F) {
case DW_EH_PE_absptr:
result = *((uintptr_t*)p);
@@ -137,15 +141,15 @@
break;
case DW_EH_PE_sleb128:
default:
- // not supported
+ /* not supported */
abort();
break;
}
- // then add relative offset
+ /* then add relative offset */
switch ( encoding & 0x70 ) {
case DW_EH_PE_absptr:
- // do nothing
+ /* do nothing */
break;
case DW_EH_PE_pcrel:
result += (uintptr_t)(*data);
@@ -155,12 +159,12 @@
case DW_EH_PE_funcrel:
case DW_EH_PE_aligned:
default:
- // not supported
+ /* not supported */
abort();
break;
}
- // then apply indirection
+ /* then apply indirection */
if (encoding & DW_EH_PE_indirect) {
result = *((uintptr_t*)result);
}
@@ -170,24 +174,25 @@
}
-//
-// The C compiler makes references to __gcc_personality_v0 in
-// the dwarf unwind information for translation units that use
-// __attribute__((cleanup(xx))) on local variables.
-// This personality routine is called by the system unwinder
-// on each frame as the stack is unwound during a C++ exception
-// throw through a C function compiled with -fexceptions.
-//
+/*
+ * The C compiler makes references to __gcc_personality_v0 in
+ * the dwarf unwind information for translation units that use
+ * __attribute__((cleanup(xx))) on local variables.
+ * This personality routine is called by the system unwinder
+ * on each frame as the stack is unwound during a C++ exception
+ * throw through a C function compiled with -fexceptions.
+ */
+
_Unwind_Reason_Code __gcc_personality_v0(int version, _Unwind_Action actions,
uint64_t exceptionClass, struct _Unwind_Exception* exceptionObject,
_Unwind_Context_t context)
{
- // Since C does not have catch clauses, there is nothing to do during
- // phase 1 (the search phase).
+ /* Since C does not have catch clauses, there is nothing to do during */
+ /* phase 1 (the search phase). */
if ( actions & _UA_SEARCH_PHASE )
return _URC_CONTINUE_UNWIND;
- // There is nothing to do if there is no LSDA for this frame.
+ /* There is nothing to do if there is no LSDA for this frame. */
const uint8_t* lsda = _Unwind_GetLanguageSpecificData(context);
if ( lsda == NULL )
return _URC_CONTINUE_UNWIND;
@@ -196,7 +201,7 @@
uintptr_t funcStart = _Unwind_GetRegionStart(context);
uintptr_t pcOffset = pc - funcStart;
- // Parse LSDA header.
+ /* Parse LSDA header. */
uint8_t lpStartEncoding = *lsda++;
if (lpStartEncoding != DW_EH_PE_omit) {
readEncodedPointer(&lsda, lpStartEncoding);
@@ -205,7 +210,7 @@
if (ttypeEncoding != DW_EH_PE_omit) {
readULEB128(&lsda);
}
- // Walk call-site table looking for range that includes current PC.
+ /* Walk call-site table looking for range that includes current PC. */
uint8_t callSiteEncoding = *lsda++;
uint32_t callSiteTableLength = readULEB128(&lsda);
const uint8_t* callSiteTableStart = lsda;
@@ -215,14 +220,15 @@
uintptr_t start = readEncodedPointer(&p, callSiteEncoding);
uintptr_t length = readEncodedPointer(&p, callSiteEncoding);
uintptr_t landingPad = readEncodedPointer(&p, callSiteEncoding);
- readULEB128(&p); // action value not used for C code
+ readULEB128(&p); /* action value not used for C code */
if ( landingPad == 0 )
- continue; // no landing pad for this entry
+ continue; /* no landing pad for this entry */
if ( (start <= pcOffset) && (pcOffset < (start+length)) ) {
- // Found landing pad for the PC.
- // Set Instruction Pointer to so we re-enter function
- // at landing pad. The landing pad is created by the compiler
- // to take two parameters in registers.
+ /* Found landing pad for the PC.
+ * Set Instruction Pointer to so we re-enter function
+ * at landing pad. The landing pad is created by the compiler
+ * to take two parameters in registers.
+ */
_Unwind_SetGR(context, __builtin_eh_return_data_regno(0),
(uintptr_t)exceptionObject);
_Unwind_SetGR(context, __builtin_eh_return_data_regno(1), 0);
@@ -231,7 +237,7 @@
}
}
- // No landing pad found, continue unwinding.
+ /* No landing pad found, continue unwinding. */
return _URC_CONTINUE_UNWIND;
}