Add support for dwarf unwinding on windows on x86_64
Clang doesn't currently support building for windows/x86_64 with
dwarf by setting command line parameters, but if manually modified
to use dwarf, we can make libunwind work in this configuration
as well.
Also include i386 in the docs when adding this as a supported
configuration; libunwind already works for i386 windows, but
can fail due to an issue unrelated to windows itself.
Differential Revision: https://reviews.llvm.org/D38819
git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@316747 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/Registers.hpp b/src/Registers.hpp
index 760818f..db0ee5d 100644
--- a/src/Registers.hpp
+++ b/src/Registers.hpp
@@ -245,7 +245,7 @@
bool validFloatRegister(int) const { return false; }
double getFloatRegister(int num) const;
void setFloatRegister(int num, double value);
- bool validVectorRegister(int) const { return false; }
+ bool validVectorRegister(int) const;
v128 getVectorRegister(int num) const;
void setVectorRegister(int num, v128 value);
const char *getRegisterName(int num);
@@ -292,8 +292,14 @@
uint64_t __cs;
uint64_t __fs;
uint64_t __gs;
+#if defined(_WIN64)
+ uint64_t __padding; // 16-byte align
+#endif
};
GPRs _registers;
+#if defined(_WIN64)
+ v128 _xmm[16];
+#endif
};
inline Registers_x86_64::Registers_x86_64(const void *registers) {
@@ -458,6 +464,38 @@
return "r14";
case UNW_X86_64_R15:
return "r15";
+ case UNW_X86_64_XMM0:
+ return "xmm0";
+ case UNW_X86_64_XMM1:
+ return "xmm1";
+ case UNW_X86_64_XMM2:
+ return "xmm2";
+ case UNW_X86_64_XMM3:
+ return "xmm3";
+ case UNW_X86_64_XMM4:
+ return "xmm4";
+ case UNW_X86_64_XMM5:
+ return "xmm5";
+ case UNW_X86_64_XMM6:
+ return "xmm6";
+ case UNW_X86_64_XMM7:
+ return "xmm7";
+ case UNW_X86_64_XMM8:
+ return "xmm8";
+ case UNW_X86_64_XMM9:
+ return "xmm9";
+ case UNW_X86_64_XMM10:
+ return "xmm10";
+ case UNW_X86_64_XMM11:
+ return "xmm11";
+ case UNW_X86_64_XMM12:
+ return "xmm12";
+ case UNW_X86_64_XMM13:
+ return "xmm13";
+ case UNW_X86_64_XMM14:
+ return "xmm14";
+ case UNW_X86_64_XMM15:
+ return "xmm15";
default:
return "unknown register";
}
@@ -471,12 +509,34 @@
_LIBUNWIND_ABORT("no x86_64 float registers");
}
-inline v128 Registers_x86_64::getVectorRegister(int) const {
- _LIBUNWIND_ABORT("no x86_64 vector registers");
+inline bool Registers_x86_64::validVectorRegister(int regNum) const {
+#if defined(_WIN64)
+ if (regNum < UNW_X86_64_XMM0)
+ return false;
+ if (regNum > UNW_X86_64_XMM15)
+ return false;
+ return true;
+#else
+ return false;
+#endif
}
-inline void Registers_x86_64::setVectorRegister(int, v128) {
+inline v128 Registers_x86_64::getVectorRegister(int regNum) const {
+#if defined(_WIN64)
+ assert(validVectorRegister(regNum));
+ return _xmm[regNum - UNW_X86_64_XMM0];
+#else
_LIBUNWIND_ABORT("no x86_64 vector registers");
+#endif
+}
+
+inline void Registers_x86_64::setVectorRegister(int regNum, v128 value) {
+#if defined(_WIN64)
+ assert(validVectorRegister(regNum));
+ _xmm[regNum - UNW_X86_64_XMM0] = value;
+#else
+ _LIBUNWIND_ABORT("no x86_64 vector registers");
+#endif
}
#endif // _LIBUNWIND_TARGET_X86_64