Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.

1 files changed, 239 insertions, 239 deletions

diff --git a/contrib/libs/libunwind/src/UnwindLevel1-gcc-ext.c b/contrib/libs/libunwind/src/UnwindLevel1-gcc-ext.c
index 951d5d219a..1032fbf688 100644
--- a/contrib/libs/libunwind/src/UnwindLevel1-gcc-ext.c
+++ b/contrib/libs/libunwind/src/UnwindLevel1-gcc-ext.c
@@ -1,29 +1,29 @@
 //===----------------------------------------------------------------------===//
-//
+// 
 // 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
-//
-//
-//  Implements gcc extensions to the C++ ABI Exception Handling Level 1.
-//
-//===----------------------------------------------------------------------===//
-
-#include <inttypes.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "config.h"
-#include "libunwind_ext.h"
-#include "libunwind.h"
-#include "Unwind-EHABI.h"
-#include "unwind.h"
-
+// 
+// 
+//  Implements gcc extensions to the C++ ABI Exception Handling Level 1. 
+// 
+//===----------------------------------------------------------------------===// 
+ 
+#include <inttypes.h> 
+#include <stdbool.h> 
+#include <stdint.h> 
+#include <stdio.h> 
+#include <stdlib.h> 
+#include <string.h> 
+ 
+#include "config.h" 
+#include "libunwind_ext.h" 
+#include "libunwind.h" 
+#include "Unwind-EHABI.h" 
+#include "unwind.h" 
+ 
 #if defined(_LIBUNWIND_BUILD_ZERO_COST_APIS)
-
+ 
 #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND)
 #define PRIVATE_1 private_[0]
 #elif defined(_LIBUNWIND_ARM_EHABI)
@@ -32,185 +32,185 @@
 #define PRIVATE_1 private_1
 #endif
 
-///  Called by __cxa_rethrow().
-_LIBUNWIND_EXPORT _Unwind_Reason_Code
-_Unwind_Resume_or_Rethrow(_Unwind_Exception *exception_object) {
+///  Called by __cxa_rethrow(). 
+_LIBUNWIND_EXPORT _Unwind_Reason_Code 
+_Unwind_Resume_or_Rethrow(_Unwind_Exception *exception_object) { 
   _LIBUNWIND_TRACE_API(
       "_Unwind_Resume_or_Rethrow(ex_obj=%p), private_1=%" PRIdPTR,
       (void *)exception_object, (intptr_t)exception_object->PRIVATE_1);
-
-  // If this is non-forced and a stopping place was found, then this is a
-  // re-throw.
-  // Call _Unwind_RaiseException() as if this was a new exception
+ 
+  // If this is non-forced and a stopping place was found, then this is a 
+  // re-throw. 
+  // Call _Unwind_RaiseException() as if this was a new exception 
   if (exception_object->PRIVATE_1 == 0) {
-    return _Unwind_RaiseException(exception_object);
-    // Will return if there is no catch clause, so that __cxa_rethrow can call
-    // std::terminate().
-  }
-
-  // Call through to _Unwind_Resume() which distiguishes between forced and
-  // regular exceptions.
-  _Unwind_Resume(exception_object);
-  _LIBUNWIND_ABORT("_Unwind_Resume_or_Rethrow() called _Unwind_RaiseException()"
-                   " which unexpectedly returned");
-}
-
-/// Called by personality handler during phase 2 to get base address for data
-/// relative encodings.
-_LIBUNWIND_EXPORT uintptr_t
-_Unwind_GetDataRelBase(struct _Unwind_Context *context) {
-  (void)context;
+    return _Unwind_RaiseException(exception_object); 
+    // Will return if there is no catch clause, so that __cxa_rethrow can call 
+    // std::terminate(). 
+  } 
+ 
+  // Call through to _Unwind_Resume() which distiguishes between forced and 
+  // regular exceptions. 
+  _Unwind_Resume(exception_object); 
+  _LIBUNWIND_ABORT("_Unwind_Resume_or_Rethrow() called _Unwind_RaiseException()" 
+                   " which unexpectedly returned"); 
+} 
+ 
+/// Called by personality handler during phase 2 to get base address for data 
+/// relative encodings. 
+_LIBUNWIND_EXPORT uintptr_t 
+_Unwind_GetDataRelBase(struct _Unwind_Context *context) { 
+  (void)context; 
   _LIBUNWIND_TRACE_API("_Unwind_GetDataRelBase(context=%p)", (void *)context);
-  _LIBUNWIND_ABORT("_Unwind_GetDataRelBase() not implemented");
-}
-
-
-/// Called by personality handler during phase 2 to get base address for text
-/// relative encodings.
-_LIBUNWIND_EXPORT uintptr_t
-_Unwind_GetTextRelBase(struct _Unwind_Context *context) {
-  (void)context;
+  _LIBUNWIND_ABORT("_Unwind_GetDataRelBase() not implemented"); 
+} 
+ 
+ 
+/// Called by personality handler during phase 2 to get base address for text 
+/// relative encodings. 
+_LIBUNWIND_EXPORT uintptr_t 
+_Unwind_GetTextRelBase(struct _Unwind_Context *context) { 
+  (void)context; 
   _LIBUNWIND_TRACE_API("_Unwind_GetTextRelBase(context=%p)", (void *)context);
-  _LIBUNWIND_ABORT("_Unwind_GetTextRelBase() not implemented");
-}
-
-
-/// Scans unwind information to find the function that contains the
-/// specified code address "pc".
-_LIBUNWIND_EXPORT void *_Unwind_FindEnclosingFunction(void *pc) {
+  _LIBUNWIND_ABORT("_Unwind_GetTextRelBase() not implemented"); 
+} 
+ 
+ 
+/// Scans unwind information to find the function that contains the 
+/// specified code address "pc". 
+_LIBUNWIND_EXPORT void *_Unwind_FindEnclosingFunction(void *pc) { 
   _LIBUNWIND_TRACE_API("_Unwind_FindEnclosingFunction(pc=%p)", pc);
-  // This is slow, but works.
-  // We create an unwind cursor then alter the IP to be pc
-  unw_cursor_t cursor;
-  unw_context_t uc;
-  unw_proc_info_t info;
+  // This is slow, but works. 
+  // We create an unwind cursor then alter the IP to be pc 
+  unw_cursor_t cursor; 
+  unw_context_t uc; 
+  unw_proc_info_t info; 
   __unw_getcontext(&uc);
   __unw_init_local(&cursor, &uc);
   __unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)(intptr_t)pc);
   if (__unw_get_proc_info(&cursor, &info) == UNW_ESUCCESS)
     return (void *)(intptr_t) info.start_ip;
-  else
-    return NULL;
-}
-
-/// Walk every frame and call trace function at each one.  If trace function
-/// returns anything other than _URC_NO_REASON, then walk is terminated.
-_LIBUNWIND_EXPORT _Unwind_Reason_Code
-_Unwind_Backtrace(_Unwind_Trace_Fn callback, void *ref) {
-  unw_cursor_t cursor;
-  unw_context_t uc;
+  else 
+    return NULL; 
+} 
+ 
+/// Walk every frame and call trace function at each one.  If trace function 
+/// returns anything other than _URC_NO_REASON, then walk is terminated. 
+_LIBUNWIND_EXPORT _Unwind_Reason_Code 
+_Unwind_Backtrace(_Unwind_Trace_Fn callback, void *ref) { 
+  unw_cursor_t cursor; 
+  unw_context_t uc; 
   __unw_getcontext(&uc);
   __unw_init_local(&cursor, &uc);
-
+ 
   _LIBUNWIND_TRACE_API("_Unwind_Backtrace(callback=%p)",
-                       (void *)(uintptr_t)callback);
-
+                       (void *)(uintptr_t)callback); 
+ 
 #if defined(_LIBUNWIND_ARM_EHABI)
-  // Create a mock exception object for force unwinding.
-  _Unwind_Exception ex;
-  memset(&ex, '\0', sizeof(ex));
+  // Create a mock exception object for force unwinding. 
+  _Unwind_Exception ex; 
+  memset(&ex, '\0', sizeof(ex)); 
   strcpy((char *)&ex.exception_class, "CLNGUNW");
-#endif
-
-  // walk each frame
-  while (true) {
-    _Unwind_Reason_Code result;
-
+#endif 
+ 
+  // walk each frame 
+  while (true) { 
+    _Unwind_Reason_Code result; 
+ 
 #if !defined(_LIBUNWIND_ARM_EHABI)
     // ask libunwind to get next frame (skip over first frame which is
-    // _Unwind_Backtrace())
+    // _Unwind_Backtrace()) 
     if (__unw_step(&cursor) <= 0) {
-      _LIBUNWIND_TRACE_UNWINDING(" _backtrace: ended because cursor reached "
+      _LIBUNWIND_TRACE_UNWINDING(" _backtrace: ended because cursor reached " 
                                  "bottom of stack, returning %d",
-                                 _URC_END_OF_STACK);
-      return _URC_END_OF_STACK;
-    }
-#else
-    // Get the information for this frame.
-    unw_proc_info_t frameInfo;
+                                 _URC_END_OF_STACK); 
+      return _URC_END_OF_STACK; 
+    } 
+#else 
+    // Get the information for this frame. 
+    unw_proc_info_t frameInfo; 
     if (__unw_get_proc_info(&cursor, &frameInfo) != UNW_ESUCCESS) {
-      return _URC_END_OF_STACK;
-    }
-
-    // Update the pr_cache in the mock exception object.
-    const uint32_t* unwindInfo = (uint32_t *) frameInfo.unwind_info;
-    ex.pr_cache.fnstart = frameInfo.start_ip;
-    ex.pr_cache.ehtp = (_Unwind_EHT_Header *) unwindInfo;
-    ex.pr_cache.additional= frameInfo.flags;
-
-    struct _Unwind_Context *context = (struct _Unwind_Context *)&cursor;
-    // Get and call the personality function to unwind the frame.
+      return _URC_END_OF_STACK; 
+    } 
+ 
+    // Update the pr_cache in the mock exception object. 
+    const uint32_t* unwindInfo = (uint32_t *) frameInfo.unwind_info; 
+    ex.pr_cache.fnstart = frameInfo.start_ip; 
+    ex.pr_cache.ehtp = (_Unwind_EHT_Header *) unwindInfo; 
+    ex.pr_cache.additional= frameInfo.flags; 
+ 
+    struct _Unwind_Context *context = (struct _Unwind_Context *)&cursor; 
+    // Get and call the personality function to unwind the frame. 
     _Unwind_Personality_Fn handler = (_Unwind_Personality_Fn)frameInfo.handler;
-    if (handler == NULL) {
-      return _URC_END_OF_STACK;
-    }
-    if (handler(_US_VIRTUAL_UNWIND_FRAME | _US_FORCE_UNWIND, &ex, context) !=
-            _URC_CONTINUE_UNWIND) {
-      return _URC_END_OF_STACK;
-    }
+    if (handler == NULL) { 
+      return _URC_END_OF_STACK; 
+    } 
+    if (handler(_US_VIRTUAL_UNWIND_FRAME | _US_FORCE_UNWIND, &ex, context) != 
+            _URC_CONTINUE_UNWIND) { 
+      return _URC_END_OF_STACK; 
+    } 
 #endif // defined(_LIBUNWIND_ARM_EHABI)
-
-    // debugging
-    if (_LIBUNWIND_TRACING_UNWINDING) {
-      char functionName[512];
-      unw_proc_info_t frame;
-      unw_word_t offset;
+ 
+    // debugging 
+    if (_LIBUNWIND_TRACING_UNWINDING) { 
+      char functionName[512]; 
+      unw_proc_info_t frame; 
+      unw_word_t offset; 
       __unw_get_proc_name(&cursor, functionName, 512, &offset);
       __unw_get_proc_info(&cursor, &frame);
-      _LIBUNWIND_TRACE_UNWINDING(
+      _LIBUNWIND_TRACE_UNWINDING( 
           " _backtrace: start_ip=0x%" PRIxPTR ", func=%s, lsda=0x%" PRIxPTR ", context=%p",
           frame.start_ip, functionName, frame.lsda,
-          (void *)&cursor);
-    }
-
-    // call trace function with this frame
-    result = (*callback)((struct _Unwind_Context *)(&cursor), ref);
-    if (result != _URC_NO_REASON) {
-      _LIBUNWIND_TRACE_UNWINDING(
+          (void *)&cursor); 
+    } 
+ 
+    // call trace function with this frame 
+    result = (*callback)((struct _Unwind_Context *)(&cursor), ref); 
+    if (result != _URC_NO_REASON) { 
+      _LIBUNWIND_TRACE_UNWINDING( 
           " _backtrace: ended because callback returned %d", result);
-      return result;
-    }
-  }
-}
-
-
+      return result; 
+    } 
+  } 
+} 
+ 
+ 
 /// Find DWARF unwind info for an address 'pc' in some function.
-_LIBUNWIND_EXPORT const void *_Unwind_Find_FDE(const void *pc,
-                                               struct dwarf_eh_bases *bases) {
-  // This is slow, but works.
-  // We create an unwind cursor then alter the IP to be pc
-  unw_cursor_t cursor;
-  unw_context_t uc;
-  unw_proc_info_t info;
+_LIBUNWIND_EXPORT const void *_Unwind_Find_FDE(const void *pc, 
+                                               struct dwarf_eh_bases *bases) { 
+  // This is slow, but works. 
+  // We create an unwind cursor then alter the IP to be pc 
+  unw_cursor_t cursor; 
+  unw_context_t uc; 
+  unw_proc_info_t info; 
   __unw_getcontext(&uc);
   __unw_init_local(&cursor, &uc);
   __unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)(intptr_t)pc);
   __unw_get_proc_info(&cursor, &info);
-  bases->tbase = (uintptr_t)info.extra;
-  bases->dbase = 0; // dbase not used on Mac OS X
-  bases->func = (uintptr_t)info.start_ip;
+  bases->tbase = (uintptr_t)info.extra; 
+  bases->dbase = 0; // dbase not used on Mac OS X 
+  bases->func = (uintptr_t)info.start_ip; 
   _LIBUNWIND_TRACE_API("_Unwind_Find_FDE(pc=%p) => %p", pc,
                   (void *)(intptr_t) info.unwind_info);
   return (void *)(intptr_t) info.unwind_info;
-}
-
-/// Returns the CFA (call frame area, or stack pointer at start of function)
-/// for the current context.
-_LIBUNWIND_EXPORT uintptr_t _Unwind_GetCFA(struct _Unwind_Context *context) {
-  unw_cursor_t *cursor = (unw_cursor_t *)context;
-  unw_word_t result;
+} 
+ 
+/// Returns the CFA (call frame area, or stack pointer at start of function) 
+/// for the current context. 
+_LIBUNWIND_EXPORT uintptr_t _Unwind_GetCFA(struct _Unwind_Context *context) { 
+  unw_cursor_t *cursor = (unw_cursor_t *)context; 
+  unw_word_t result; 
   __unw_get_reg(cursor, UNW_REG_SP, &result);
   _LIBUNWIND_TRACE_API("_Unwind_GetCFA(context=%p) => 0x%" PRIxPTR,
                        (void *)context, result);
-  return (uintptr_t)result;
-}
-
-
-/// Called by personality handler during phase 2 to get instruction pointer.
-/// ipBefore is a boolean that says if IP is already adjusted to be the call
-/// site address.  Normally IP is the return address.
-_LIBUNWIND_EXPORT uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context,
-                                              int *ipBefore) {
+  return (uintptr_t)result; 
+} 
+ 
+ 
+/// Called by personality handler during phase 2 to get instruction pointer. 
+/// ipBefore is a boolean that says if IP is already adjusted to be the call 
+/// site address.  Normally IP is the return address. 
+_LIBUNWIND_EXPORT uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context, 
+                                              int *ipBefore) { 
   _LIBUNWIND_TRACE_API("_Unwind_GetIPInfo(context=%p)", (void *)context);
   int isSignalFrame = __unw_is_signal_frame((unw_cursor_t *)context);
   // Negative means some kind of error (probably UNW_ENOINFO), but we have no
@@ -220,98 +220,98 @@ _LIBUNWIND_EXPORT uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context,
     *ipBefore = 0;
   else
     *ipBefore = 1;
-  return _Unwind_GetIP(context);
-}
-
+  return _Unwind_GetIP(context); 
+} 
+ 
 #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND)
-
-/// Called by programs with dynamic code generators that want
-/// to register a dynamically generated FDE.
-/// This function has existed on Mac OS X since 10.4, but
-/// was broken until 10.6.
-_LIBUNWIND_EXPORT void __register_frame(const void *fde) {
+ 
+/// Called by programs with dynamic code generators that want 
+/// to register a dynamically generated FDE. 
+/// This function has existed on Mac OS X since 10.4, but 
+/// was broken until 10.6. 
+_LIBUNWIND_EXPORT void __register_frame(const void *fde) { 
   _LIBUNWIND_TRACE_API("__register_frame(%p)", fde);
   __unw_add_dynamic_fde((unw_word_t)(uintptr_t)fde);
-}
-
-
-/// Called by programs with dynamic code generators that want
-/// to unregister a dynamically generated FDE.
-/// This function has existed on Mac OS X since 10.4, but
-/// was broken until 10.6.
-_LIBUNWIND_EXPORT void __deregister_frame(const void *fde) {
+} 
+ 
+ 
+/// Called by programs with dynamic code generators that want 
+/// to unregister a dynamically generated FDE. 
+/// This function has existed on Mac OS X since 10.4, but 
+/// was broken until 10.6. 
+_LIBUNWIND_EXPORT void __deregister_frame(const void *fde) { 
   _LIBUNWIND_TRACE_API("__deregister_frame(%p)", fde);
   __unw_remove_dynamic_fde((unw_word_t)(uintptr_t)fde);
-}
-
-
-// The following register/deregister functions are gcc extensions.
-// They have existed on Mac OS X, but have never worked because Mac OS X
-// before 10.6 used keymgr to track known FDEs, but these functions
-// never got updated to use keymgr.
-// For now, we implement these as do-nothing functions to keep any existing
-// applications working.  We also add the not in 10.6 symbol so that nwe
-// application won't be able to use them.
-
+} 
+ 
+ 
+// The following register/deregister functions are gcc extensions. 
+// They have existed on Mac OS X, but have never worked because Mac OS X 
+// before 10.6 used keymgr to track known FDEs, but these functions 
+// never got updated to use keymgr. 
+// For now, we implement these as do-nothing functions to keep any existing 
+// applications working.  We also add the not in 10.6 symbol so that nwe 
+// application won't be able to use them. 
+ 
 #if defined(_LIBUNWIND_SUPPORT_FRAME_APIS)
-_LIBUNWIND_EXPORT void __register_frame_info_bases(const void *fde, void *ob,
-                                                   void *tb, void *db) {
-  (void)fde;
-  (void)ob;
-  (void)tb;
-  (void)db;
+_LIBUNWIND_EXPORT void __register_frame_info_bases(const void *fde, void *ob, 
+                                                   void *tb, void *db) { 
+  (void)fde; 
+  (void)ob; 
+  (void)tb; 
+  (void)db; 
  _LIBUNWIND_TRACE_API("__register_frame_info_bases(%p,%p, %p, %p)",
-                            fde, ob, tb, db);
-  // do nothing, this function never worked in Mac OS X
-}
-
-_LIBUNWIND_EXPORT void __register_frame_info(const void *fde, void *ob) {
-  (void)fde;
-  (void)ob;
+                            fde, ob, tb, db); 
+  // do nothing, this function never worked in Mac OS X 
+} 
+ 
+_LIBUNWIND_EXPORT void __register_frame_info(const void *fde, void *ob) { 
+  (void)fde; 
+  (void)ob; 
   _LIBUNWIND_TRACE_API("__register_frame_info(%p, %p)", fde, ob);
-  // do nothing, this function never worked in Mac OS X
-}
-
-_LIBUNWIND_EXPORT void __register_frame_info_table_bases(const void *fde,
-                                                         void *ob, void *tb,
-                                                         void *db) {
-  (void)fde;
-  (void)ob;
-  (void)tb;
-  (void)db;
-  _LIBUNWIND_TRACE_API("__register_frame_info_table_bases"
+  // do nothing, this function never worked in Mac OS X 
+} 
+ 
+_LIBUNWIND_EXPORT void __register_frame_info_table_bases(const void *fde, 
+                                                         void *ob, void *tb, 
+                                                         void *db) { 
+  (void)fde; 
+  (void)ob; 
+  (void)tb; 
+  (void)db; 
+  _LIBUNWIND_TRACE_API("__register_frame_info_table_bases" 
                              "(%p,%p, %p, %p)", fde, ob, tb, db);
-  // do nothing, this function never worked in Mac OS X
-}
-
-_LIBUNWIND_EXPORT void __register_frame_info_table(const void *fde, void *ob) {
-  (void)fde;
-  (void)ob;
+  // do nothing, this function never worked in Mac OS X 
+} 
+ 
+_LIBUNWIND_EXPORT void __register_frame_info_table(const void *fde, void *ob) { 
+  (void)fde; 
+  (void)ob; 
   _LIBUNWIND_TRACE_API("__register_frame_info_table(%p, %p)", fde, ob);
-  // do nothing, this function never worked in Mac OS X
-}
-
-_LIBUNWIND_EXPORT void __register_frame_table(const void *fde) {
-  (void)fde;
+  // do nothing, this function never worked in Mac OS X 
+} 
+ 
+_LIBUNWIND_EXPORT void __register_frame_table(const void *fde) { 
+  (void)fde; 
   _LIBUNWIND_TRACE_API("__register_frame_table(%p)", fde);
-  // do nothing, this function never worked in Mac OS X
-}
-
-_LIBUNWIND_EXPORT void *__deregister_frame_info(const void *fde) {
-  (void)fde;
+  // do nothing, this function never worked in Mac OS X 
+} 
+ 
+_LIBUNWIND_EXPORT void *__deregister_frame_info(const void *fde) { 
+  (void)fde; 
   _LIBUNWIND_TRACE_API("__deregister_frame_info(%p)", fde);
-  // do nothing, this function never worked in Mac OS X
-  return NULL;
-}
-
-_LIBUNWIND_EXPORT void *__deregister_frame_info_bases(const void *fde) {
-  (void)fde;
+  // do nothing, this function never worked in Mac OS X 
+  return NULL; 
+} 
+ 
+_LIBUNWIND_EXPORT void *__deregister_frame_info_bases(const void *fde) { 
+  (void)fde; 
   _LIBUNWIND_TRACE_API("__deregister_frame_info_bases(%p)", fde);
-  // do nothing, this function never worked in Mac OS X
-  return NULL;
-}
+  // do nothing, this function never worked in Mac OS X 
+  return NULL; 
+} 
 #endif // defined(_LIBUNWIND_SUPPORT_FRAME_APIS)
-
+ 
 #endif // defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND)
-
+ 
 #endif // defined(_LIBUNWIND_BUILD_ZERO_COST_APIS)