Update Crashpad to f487da4ff2c47a129e2f8f3a7e0c769b54e4585f

third_party/crashpad/crashpad/util/win/safe_terminate_process.asm

+; Copyright 2017 The Crashpad Authors. All rights reserved.
+;
+; Licensed under the Apache License, Version 2.0 (the "License");
+; you may not use this file except in compliance with the License.
+; You may obtain a copy of the License at
+;
+;     http://www.apache.org/licenses/LICENSE-2.0
+;
+; Unless required by applicable law or agreed to in writing, software
+; distributed under the License is distributed on an "AS IS" BASIS,
+; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+; See the License for the specific language governing permissions and
+; limitations under the License.
+
+; Detect ml64 assembling for x86_64 by checking for rax.
+ifdef rax
+_M_X64 equ 1
+else
+_M_IX86 equ 1
+endif
+
+ifdef _M_IX86
+.586
+.xmm
+.model flat
+
+includelib kernel32.lib
+
+extern __imp__TerminateProcess@8:proc
+
+; namespace crashpad {
+; bool SafeTerminateProcess(HANDLE process, UINT exit_code);
+; }  // namespace crashpad
+SAFETERMINATEPROCESS_SYMBOL equ ?SafeTerminateProcess@crashpad@@YA_NPAXI@Z
+
+_TEXT segment
+public SAFETERMINATEPROCESS_SYMBOL
+
+SAFETERMINATEPROCESS_SYMBOL proc
+
+  ; This function is written in assembler source because it’s important for it
+  ; to not be inlined, for it to allocate a stack frame, and most critically,
+  ; for it to not trust esp on return from TerminateProcess().
+  ; __declspec(noinline) can prevent inlining and #pragma optimize("y", off) can
+  ; disable frame pointer omission, but there’s no way to force a C compiler to
+  ; distrust esp, and even if there was a way, it’d probably be fragile.
+
+  push ebp
+  mov ebp, esp
+
+  push [ebp+12]
+  push [ebp+8]
+  call dword ptr [__imp__TerminateProcess@8]
+
+  ; Convert from BOOL to bool.
+  test eax, eax
+  setne al
+
+  ; TerminateProcess() is supposed to be stdcall (callee clean-up), and esp and
+  ; ebp are expected to already be equal. But if it’s been patched badly by
+  ; something that’s cdecl (caller clean-up), this next move will get things
+  ; back on track.
+  mov esp, ebp
+  pop ebp
+
+  ret
+
+SAFETERMINATEPROCESS_SYMBOL endp
+
+_TEXT ends
+
+endif
+
+end