[compiler-rt] Implements DumpAllRegisters for windows intel archs. (#108688)

Author: devnexen

compiler-rt/lib/sanitizer_common/sanitizer_win.cpp

@@ -1033,7 +1033,45 @@ SignalContext::WriteFlag SignalContext::GetWriteFlag() const {
 }
 
 void SignalContext::DumpAllRegisters(void *context) {
-  // FIXME: Implement this.
+  CONTEXT *ctx = (CONTEXT *)context;
+#  if defined(__M_X64)
+  Report("Register values:\n");
+  Printf("rax = %llx  ", ctx->Rax);
+  Printf("rbx = %llx  ", ctx->Rbx);
+  Printf("rcx = %llx  ", ctx->Rcx);
+  Printf("rdx = %llx  ", ctx->Rdx);
+  Printf("\n");
+  Printf("rdi = %llx  ", ctx->Rdi);
+  Printf("rsi = %llx  ", ctx->Rsi);
+  Printf("rbp = %llx  ", ctx->Rbp);
+  Printf("rsp = %llx  ", ctx->Rsp);
+  Printf("\n");
+  Printf("r8  = %llx  ", ctx->R8);
+  Printf("r9  = %llx  ", ctx->R9);
+  Printf("r10 = %llx  ", ctx->R10);
+  Printf("r11 = %llx  ", ctx->R11);
+  Printf("\n");
+  Printf("r12 = %llx  ", ctx->R12);
+  Printf("r13 = %llx  ", ctx->R13);
+  Printf("r14 = %llx  ", ctx->R14);
+  Printf("r15 = %llx  ", ctx->R15);
+  Printf("\n");
+#  elif defined(_M_IX86)
+  Report("Register values:\n");
+  Printf("eax = %lx  ", ctx->Eax);
+  Printf("ebx = %lx  ", ctx->Ebx);
+  Printf("ecx = %lx  ", ctx->Ecx);
+  Printf("edx = %lx  ", ctx->Edx);
+  Printf("\n");
+  Printf("edi = %lx  ", ctx->Edi);
+  Printf("esi = %lx  ", ctx->Esi);
+  Printf("ebp = %lx  ", ctx->Ebp);
+  Printf("esp = %lx  ", ctx->Esp);
+  Printf("\n");
+#  else
+  // TODO
+  (void)ctx;
+#  endif
 }
 
 int SignalContext::GetType() const {

compiler-rt/test/sanitizer_common/TestCases/Windows/dump_registers_i386.cpp

@@ -0,0 +1,17 @@
+// Check that sanitizer prints registers dump_registers on dump_registers=1
+// RUN: %clangxx  %s -o %t
+// RUN: %env_tool_opts=dump_registers=0 not %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-NODUMP --strict-whitespace
+// RUN: not %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-DUMP --strict-whitespace
+//
+// REQUIRES: i386-pc-windows-msvc
+
+#include <windows.h>
+
+int main() {
+  RaiseException(EXCEPTION_ACCESS_VIOLATION, 0, 0, NULL);
+  // CHECK-DUMP: Register values
+  // CHECK-DUMP-NEXT: eax = {{0x[0-9a-f]+}}  ebx = {{0x[0-9a-f]+}}  ecx = {{0x[0-9a-f]+}}  edx = {{0x[0-9a-f]+}}
+  // CHECK-DUMP-NEXT: edi = {{0x[0-9a-f]+}}  esi = {{0x[0-9a-f]+}}  ebp = {{0x[0-9a-f]+}}  esp = {{0x[0-9a-f]+}}
+  // CHECK-NODUMP-NOT: Register values
+  return 0;
+}

compiler-rt/test/sanitizer_common/TestCases/Windows/dump_registers_x86_64.cpp

@@ -0,0 +1,19 @@
+// Check that sanitizer prints registers dump_registers on dump_registers=1
+// RUN: %clangxx  %s -o %t
+// RUN: %env_tool_opts=dump_registers=0 not %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-NODUMP --strict-whitespace
+// RUN: not %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-DUMP --strict-whitespace
+//
+// REQUIRES: x86_64-pc-windows-msvc
+
+#include <windows.h>
+
+int main() {
+  RaiseException(EXCEPTION_ACCESS_VIOLATION, 0, 0, NULL);
+  // CHECK-DUMP: Register values
+  // CHECK-DUMP-NEXT: rax = {{0x[0-9a-f]+}}  rbx = {{0x[0-9a-f]+}}  rcx = {{0x[0-9a-f]+}}  rdx = {{0x[0-9a-f]+}}
+  // CHECK-DUMP-NEXT: rdi = {{0x[0-9a-f]+}}  rsi = {{0x[0-9a-f]+}}  rbp = {{0x[0-9a-f]+}}  rsp = {{0x[0-9a-f]+}}
+  // CHECK-DUMP-NEXT:  r8 = {{0x[0-9a-f]+}}   r9 = {{0x[0-9a-f]+}}  r10 = {{0x[0-9a-f]+}}  r11 = {{0x[0-9a-f]+}}
+  // CHECK-DUMP-NEXT: r12 = {{0x[0-9a-f]+}}  r13 = {{0x[0-9a-f]+}}  r14 = {{0x[0-9a-f]+}}  r15 = {{0x[0-9a-f]+}}
+  // CHECK-NODUMP-NOT: Register values
+  return 0;
+}