[libunwind] Fixed a number of typos

I went over the output of the following mess of a command:

`(ulimit -m 2000000; ulimit -v 2000000; git ls-files -z | parallel --xargs -0 cat | aspell list --mode=none --ignore-case | grep -E '^[A-Za-z][a-z]*$' | sort | uniq -c | sort -n | grep -vE '.{25}' | aspell pipe -W3 | grep : | cut -d' ' -f2 | less)`

and proceeded to spend a few days looking at it to find probable typos
and fixed a few hundred of them in all of the llvm project (note, the
ones I found are not anywhere near all of them, but it seems like a
good start).

Reviewed By: #libunwind, MaskRay

Differential Revision: https://reviews.llvm.org/D130948

libunwind/docs/conf.py

@@ -242,7 +242,7 @@ texinfo_documents = [
 #texinfo_show_urls = 'footnote'
 
 
-# FIXME: Define intersphinx configration.
+# FIXME: Define intersphinx configuration.
 intersphinx_mapping = {}
 
 

libunwind/include/mach-o/compact_unwind_encoding.h

@@ -33,7 +33,7 @@
 
 
 //
-// The compact unwind endoding is a 32-bit value which encoded in an
+// The compact unwind encoding is a 32-bit value which encoded in an
 // architecture specific way, which registers to restore from where, and how
 // to unwind out of the function.
 //
@@ -116,7 +116,7 @@ enum {
 //    on the stack immediately after the return address.  The stack_size/4 is
 //    encoded in the UNWIND_X86_FRAMELESS_STACK_SIZE (max stack size is 1024).
 //    The number of registers saved is encoded in UNWIND_X86_FRAMELESS_STACK_REG_COUNT.
-//    UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION constains which registers were
+//    UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION contains which registers were
 //    saved and their order.
 // UNWIND_X86_MODE_STACK_IND:
 //    A "frameless" (EBP not used as frame pointer) function large constant 
@@ -250,7 +250,7 @@ enum {
 //    on the stack immediately after the return address.  The stack_size/8 is
 //    encoded in the UNWIND_X86_64_FRAMELESS_STACK_SIZE (max stack size is 2048).
 //    The number of registers saved is encoded in UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT.
-//    UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION constains which registers were
+//    UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION contains which registers were
 //    saved and their order.  
 // UNWIND_X86_64_MODE_STACK_IND:
 //    A "frameless" (RBP not used as frame pointer) function large constant 

libunwind/include/unwind.h

@@ -93,7 +93,7 @@ extern void _Unwind_SjLj_Unregister(_Unwind_FunctionContext_t fc);
 #endif
 
 //
-// The following are semi-suppoted extensions to the C++ ABI
+// The following are semi-supported extensions to the C++ ABI
 //
 
 //

libunwind/src/DwarfInstructions.hpp

@@ -25,7 +25,7 @@
 namespace libunwind {
 
 
-/// DwarfInstructions maps abtract DWARF unwind instructions to a particular
+/// DwarfInstructions maps abstract DWARF unwind instructions to a particular
 /// architecture
 template <typename A, typename R>
 class DwarfInstructions {
@@ -241,7 +241,7 @@ int DwarfInstructions<A, R>::stepWithDwarf(A &addressSpace, pint_t pc,
             return UNW_EBADREG;
         } else if (i == (int)cieInfo.returnAddressRegister) {
             // Leaf function keeps the return address in register and there is no
-            // explicit intructions how to restore it.
+            // explicit instructions how to restore it.
             returnAddress = registers.getRegister(cieInfo.returnAddressRegister);
         }
       }
@@ -331,7 +331,7 @@ int DwarfInstructions<A, R>::stepWithDwarf(A &addressSpace, pint_t pc,
 #endif
 
       // Return address is address after call site instruction, so setting IP to
-      // that does simualates a return.
+      // that does simulates a return.
       newRegisters.setIP(returnAddress);
 
       // Simulate the step by replacing the register set with the new ones.
@@ -635,7 +635,7 @@ DwarfInstructions<A, R>::evaluateExpression(pint_t expression, A &addressSpace,
       svalue = (sint_t)*sp;
       *sp = (pint_t)(svalue >> value);
       if (log)
-        fprintf(stderr, "shift left arithmetric\n");
+        fprintf(stderr, "shift left arithmetic\n");
       break;
 
     case DW_OP_xor:

libunwind/src/DwarfParser.hpp

@@ -353,7 +353,7 @@ const char *CFI_Parser<A>::parseCIE(A &addressSpace, pint_t cie,
   while (addressSpace.get8(p) != 0)
     ++p;
   ++p;
-  // parse code aligment factor
+  // parse code alignment factor
   cieInfo->codeAlignFactor = (uint32_t)addressSpace.getULEB128(p, cieContentEnd);
   // parse data alignment factor
   cieInfo->dataAlignFactor = (int)addressSpace.getSLEB128(p, cieContentEnd);
@@ -407,7 +407,7 @@ const char *CFI_Parser<A>::parseCIE(A &addressSpace, pint_t cie,
 }
 
 
-/// "run" the DWARF instructions and create the abstact PrologInfo for an FDE
+/// "run" the DWARF instructions and create the abstract PrologInfo for an FDE
 template <typename A>
 bool CFI_Parser<A>::parseFDEInstructions(A &addressSpace,
                                          const FDE_Info &fdeInfo,

libunwind/src/Registers.hpp

@@ -4003,7 +4003,7 @@ typedef float fp_t;
 #    error "Unsupported __riscv_flen"
 #   endif
 #  else
-// This is just for supressing undeclared error of fp_t.
+// This is just for suppressing undeclared error of fp_t.
 typedef double fp_t;
 #  endif
 # else

libunwind/src/Unwind-EHABI.cpp

@@ -235,7 +235,7 @@ decode_eht_entry(const uint32_t* data, size_t* off, size_t* len) {
   } else {
     // 6.3: ARM Compact Model
     //
-    // EHT entries here correspond to the __aeabi_unwind_cpp_pr[012] PRs indeded
+    // EHT entries here correspond to the __aeabi_unwind_cpp_pr[012] PRs indeed
     // by format:
     Descriptor::Format format =
         static_cast<Descriptor::Format>((*data & 0x0f000000) >> 24);
@@ -845,7 +845,7 @@ _LIBUNWIND_EXPORT void _Unwind_Complete(_Unwind_Exception* exception_object) {
 /// may force a jump to a landing pad in that function, the landing
 /// pad code may then call _Unwind_Resume() to continue with the
 /// unwinding.  Note: the call to _Unwind_Resume() is from compiler
-/// geneated user code.  All other _Unwind_* routines are called
+/// generated user code.  All other _Unwind_* routines are called
 /// by the C++ runtime __cxa_* routines.
 ///
 /// Note: re-throwing an exception (as opposed to continuing the unwind)

libunwind/src/Unwind-seh.cpp

@@ -137,7 +137,7 @@ _GCC_specific_handler(PEXCEPTION_RECORD ms_exc, PVOID frame, PCONTEXT ms_ctx,
     // If we were called by __libunwind_seh_personality(), indicate that
     // a handler was found; otherwise, initiate phase 2 by unwinding.
     if (ours && ms_exc->NumberParameters > 1)
-      return 4 /* ExecptionExecuteHandler in mingw */;
+      return 4 /* ExceptionExecuteHandler in mingw */;
     // This should never happen in phase 2.
     if (IS_UNWINDING(ms_exc->ExceptionFlags))
       _LIBUNWIND_ABORT("Personality indicated exception handler in phase 2!");
@@ -155,7 +155,7 @@ _GCC_specific_handler(PEXCEPTION_RECORD ms_exc, PVOID frame, PCONTEXT ms_ctx,
     // a handler was found; otherwise, it's time to initiate a collided
     // unwind to the target.
     if (ours && !IS_UNWINDING(ms_exc->ExceptionFlags) && ms_exc->NumberParameters > 1)
-      return 4 /* ExecptionExecuteHandler in mingw */;
+      return 4 /* ExceptionExecuteHandler in mingw */;
     // This should never happen in phase 1.
     if (!IS_UNWINDING(ms_exc->ExceptionFlags))
       _LIBUNWIND_ABORT("Personality installed context during phase 1!");
@@ -354,7 +354,7 @@ _Unwind_RaiseException(_Unwind_Exception *exception_object) {
 /// may force a jump to a landing pad in that function; the landing
 /// pad code may then call \c _Unwind_Resume() to continue with the
 /// unwinding.  Note: the call to \c _Unwind_Resume() is from compiler
-/// geneated user code.  All other \c _Unwind_* routines are called
+/// generated user code.  All other \c _Unwind_* routines are called
 /// by the C++ runtime \c __cxa_* routines.
 ///
 /// Note: re-throwing an exception (as opposed to continuing the unwind)

libunwind/src/Unwind-sjlj.c

@@ -33,7 +33,7 @@ struct _Unwind_FunctionContext {
   struct _Unwind_FunctionContext *prev;
 
 #if defined(__ve__)
-  // VE requires to store 64 bit pointers in the buffer for SjLj execption.
+  // VE requires to store 64 bit pointers in the buffer for SjLj exception.
   // We expand the size of values defined here.  This size must be matched
   // to the size returned by TargetMachine::getSjLjDataSize().
 
@@ -357,7 +357,7 @@ _Unwind_SjLj_RaiseException(struct _Unwind_Exception *exception_object) {
 /// may force a jump to a landing pad in that function, the landing
 /// pad code may then call _Unwind_Resume() to continue with the
 /// unwinding.  Note: the call to _Unwind_Resume() is from compiler
-/// geneated user code.  All other _Unwind_* routines are called
+/// generated user code.  All other _Unwind_* routines are called
 /// by the C++ runtime __cxa_* routines.
 ///
 /// Re-throwing an exception is implemented by having the code call
@@ -394,7 +394,7 @@ _Unwind_SjLj_Resume_or_Rethrow(struct _Unwind_Exception *exception_object) {
     // std::terminate()
   }
 
-  // Call through to _Unwind_Resume() which distiguishes between forced and
+  // Call through to _Unwind_Resume() which distinguishes between forced and
   // regular exceptions.
   _Unwind_SjLj_Resume(exception_object);
   _LIBUNWIND_ABORT("__Unwind_SjLj_Resume_or_Rethrow() called "

libunwind/src/UnwindCursor.hpp

@@ -510,7 +510,7 @@ public:
   void setDispatcherContext(DISPATCHER_CONTEXT *disp) { _dispContext = *disp; }
 
   // libunwind does not and should not depend on C++ library which means that we
-  // need our own defition of inline placement new.
+  // need our own definition of inline placement new.
   static void *operator new(size_t, UnwindCursor<A, R> *p) { return p; }
 
 private:
@@ -946,7 +946,7 @@ public:
 #endif
 
   // libunwind does not and should not depend on C++ library which means that we
-  // need our own defition of inline placement new.
+  // need our own definition of inline placement new.
   static void *operator new(size_t, UnwindCursor<A, R> *p) { return p; }
 
 private:
@@ -2461,7 +2461,7 @@ int UnwindCursor<A, R>::stepWithTBTable(pint_t pc, tbtable *TBTable,
                              reinterpret_cast<void *>(pc));
 
   // The return address is the address after call site instruction, so
-  // setting IP to that simualates a return.
+  // setting IP to that simulates a return.
   newRegisters.setIP(reinterpret_cast<uintptr_t>(returnAddress));
 
   // Simulate the step by replacing the register set with the new ones.

libunwind/src/UnwindLevel1-gcc-ext.c

@@ -52,7 +52,7 @@ _Unwind_Resume_or_Rethrow(_Unwind_Exception *exception_object) {
     // std::terminate().
   }
 
-  // Call through to _Unwind_Resume() which distiguishes between forced and
+  // Call through to _Unwind_Resume() which distinguishes between forced and
   // regular exceptions.
   _Unwind_Resume(exception_object);
   _LIBUNWIND_ABORT("_Unwind_Resume_or_Rethrow() called _Unwind_RaiseException()"

libunwind/src/UnwindLevel1.c

@@ -41,7 +41,7 @@
 // In exception handing, some stack frames will be skipped before jumping to
 // landing pad and we must adjust CET shadow stack accordingly.
 // _LIBUNWIND_POP_CET_SSP is used to adjust CET shadow stack pointer and we
-// directly jump to __libunwind_Registerts_x86/x86_64_jumpto instead of using
+// directly jump to __libunwind_Registers_x86/x86_64_jumpto instead of using
 // a regular function call to avoid pushing to CET shadow stack again.
 #if !defined(_LIBUNWIND_USE_CET)
 #define __unw_phase2_resume(cursor, fn)                                        \
@@ -425,7 +425,7 @@ _Unwind_RaiseException(_Unwind_Exception *exception_object) {
 /// may force a jump to a landing pad in that function, the landing
 /// pad code may then call _Unwind_Resume() to continue with the
 /// unwinding.  Note: the call to _Unwind_Resume() is from compiler
-/// geneated user code.  All other _Unwind_* routines are called
+/// generated user code.  All other _Unwind_* routines are called
 /// by the C++ runtime __cxa_* routines.
 ///
 /// Note: re-throwing an exception (as opposed to continuing the unwind)

libunwind/src/UnwindRegistersRestore.S

@@ -441,7 +441,7 @@ DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_ppc6jumptoEv)
 //  thread_state pointer is in r3
 //
 
-  // restore integral registerrs
+  // restore integral registers
   // skip r0 for now
   // skip r1 for now
   lwz     2,  16(3)

libunwind/src/libunwind.cpp

@@ -117,7 +117,7 @@ _LIBUNWIND_HIDDEN int __unw_set_reg(unw_cursor_t *cursor, unw_regnum_t regNum,
   AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor;
   if (co->validReg(regNum)) {
     co->setReg(regNum, (pint_t)value);
-    // specical case altering IP to re-find info (being called by personality
+    // special case altering IP to re-find info (being called by personality
     // function)
     if (regNum == UNW_REG_IP) {
       unw_proc_info_t info;

libunwind/test/unwind_leaffunction.pass.cpp

@@ -28,7 +28,8 @@ _Unwind_Reason_Code frame_handler(struct _Unwind_Context* ctx, void* arg) {
   (void)arg;
   Dl_info info = { 0, 0, 0, 0 };
 
-  // Unwind util the main is reached, above frames deeped on the platfrom and architecture.
+  // Unwind until the main is reached, above frames deeped on the platform and
+  // architecture.
   if (dladdr(reinterpret_cast<void *>(_Unwind_GetIP(ctx)), &info) &&
       info.dli_sname && !strcmp("main", info.dli_sname)) {
     _Exit(0);