feat add marl for fiber

3party/marl/src/osfiber_asm_x64.h

@@ -0,0 +1,78 @@
+// Copyright 2019 The Marl Authors.
+//
+// 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
+//
+//     https://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.
+
+#define MARL_REG_RBX 0x00
+#define MARL_REG_RBP 0x08
+#define MARL_REG_R12 0x10
+#define MARL_REG_R13 0x18
+#define MARL_REG_R14 0x20
+#define MARL_REG_R15 0x28
+#define MARL_REG_RDI 0x30
+#define MARL_REG_RSI 0x38
+#define MARL_REG_RSP 0x40
+#define MARL_REG_RIP 0x48
+
+#if defined(__APPLE__)
+#define MARL_ASM_SYMBOL(x) _##x
+#else
+#define MARL_ASM_SYMBOL(x) x
+#endif
+
+#ifndef MARL_BUILD_ASM
+
+#include <stdint.h>
+
+struct marl_fiber_context {
+  // callee-saved registers
+  uintptr_t RBX;
+  uintptr_t RBP;
+  uintptr_t R12;
+  uintptr_t R13;
+  uintptr_t R14;
+  uintptr_t R15;
+
+  // parameter registers
+  uintptr_t RDI;
+  uintptr_t RSI;
+
+  // stack and instruction registers
+  uintptr_t RSP;
+  uintptr_t RIP;
+};
+
+#ifdef __cplusplus
+#include <cstddef>
+static_assert(offsetof(marl_fiber_context, RBX) == MARL_REG_RBX,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, RBP) == MARL_REG_RBP,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, R12) == MARL_REG_R12,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, R13) == MARL_REG_R13,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, R14) == MARL_REG_R14,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, R15) == MARL_REG_R15,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, RDI) == MARL_REG_RDI,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, RSI) == MARL_REG_RSI,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, RSP) == MARL_REG_RSP,
+              "Bad register offset");
+static_assert(offsetof(marl_fiber_context, RIP) == MARL_REG_RIP,
+              "Bad register offset");
+#endif  // __cplusplus
+
+#endif  // MARL_BUILD_ASM