Move backend specific files to separate directories.

src/ia32/frames-ia32.h

+// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_FRAMES_IA32_H_
+#define V8_FRAMES_IA32_H_
+
+namespace v8 { namespace internal {
+
+
+// Register lists
+// Note that the bit values must match those used in actual instruction encoding
+static const int kNumRegs = 8;
+
+
+// Caller-saved registers
+static const RegList kJSCallerSaved =
+  1 << 0 |  // eax
+  1 << 1 |  // ecx
+  1 << 2 |  // edx
+  1 << 3 |  // ebx - used as a caller-saved register in JavaScript code
+  1 << 7;   // edi - callee function
+
+static const int kNumJSCallerSaved = 5;
+
+typedef Object* JSCallerSavedBuffer[kNumJSCallerSaved];
+
+// ----------------------------------------------------
+
+
+class StackHandlerConstants : public AllStatic {
+ public:
+  static const int kNextOffset  = 0 * kPointerSize;
+  static const int kPPOffset    = 1 * kPointerSize;
+  static const int kFPOffset    = 2 * kPointerSize;
+
+  // TODO(1233780): Get rid of the code slot in stack handlers.
+  static const int kCodeOffset  = 3 * kPointerSize;
+
+  static const int kStateOffset = 4 * kPointerSize;
+  static const int kPCOffset    = 5 * kPointerSize;
+
+  static const int kAddressDisplacement = -1 * kPointerSize;
+  static const int kSize = kPCOffset + kPointerSize;
+};
+
+
+class EntryFrameConstants : public AllStatic {
+ public:
+  static const int kCallerFPOffset      = -6 * kPointerSize;
+
+  static const int kFunctionArgOffset   = +3 * kPointerSize;
+  static const int kReceiverArgOffset   = +4 * kPointerSize;
+  static const int kArgcOffset          = +5 * kPointerSize;
+  static const int kArgvOffset          = +6 * kPointerSize;
+};
+
+
+class ExitFrameConstants : public AllStatic {
+ public:
+  static const int kDebugMarkOffset = -2 * kPointerSize;
+  static const int kSPOffset        = -1 * kPointerSize;
+
+  // Let the parameters pointer for exit frames point just below the
+  // frame structure on the stack (frame pointer and return address).
+  static const int kPPDisplacement = +2 * kPointerSize;
+
+  static const int kCallerFPOffset =  0 * kPointerSize;
+  static const int kCallerPCOffset = +1 * kPointerSize;
+};
+
+
+class StandardFrameConstants : public AllStatic {
+ public:
+  static const int kExpressionsOffset = -3 * kPointerSize;
+  static const int kMarkerOffset      = -2 * kPointerSize;
+  static const int kContextOffset     = -1 * kPointerSize;
+  static const int kCallerFPOffset    =  0 * kPointerSize;
+  static const int kCallerPCOffset    = +1 * kPointerSize;
+  static const int kCallerSPOffset    = +2 * kPointerSize;
+};
+
+
+class JavaScriptFrameConstants : public AllStatic {
+ public:
+  // FP-relative.
+  static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset;
+  static const int kSavedRegistersOffset = +2 * kPointerSize;
+  static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset;
+
+  // CallerSP-relative (aka PP-relative)
+  static const int kParam0Offset   = -2 * kPointerSize;
+  static const int kReceiverOffset = -1 * kPointerSize;
+};
+
+
+class ArgumentsAdaptorFrameConstants : public AllStatic {
+ public:
+  static const int kLengthOffset = StandardFrameConstants::kExpressionsOffset;
+};
+
+
+class InternalFrameConstants : public AllStatic {
+ public:
+  static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset;
+};
+
+
+inline Object* JavaScriptFrame::function_slot_object() const {
+  const int offset = JavaScriptFrameConstants::kFunctionOffset;
+  return Memory::Object_at(fp() + offset);
+}
+
+
+// ----------------------------------------------------
+
+
+
+
+  // C Entry frames:
+
+  //    lower    |    Stack    |
+  //  addresses  |      ^      |
+  //             |      |      |
+  //             |             |
+  //             +-------------+
+  //             |  entry_pc   |
+  //             +-------------+ <--+ entry_sp
+  //                    .           |
+  //                    .           |
+  //                    .           |
+  //             +-------------+    |
+  //          -3 |  entry_sp --+----+
+  //      e      +-------------+
+  //      n   -2 | C function  |
+  //      t      +-------------+
+  //      r   -1 |  caller_pp  |
+  //      y      +-------------+ <--- fp (frame pointer, ebp)
+  //           0 |  caller_fp  |
+  //      f      +-------------+
+  //      r    1 |  caller_pc  |
+  //      a      +-------------+ <--- caller_sp (stack pointer, esp)
+  //      m    2 |             |
+  //      e      |  arguments  |
+  //             |             |
+  //             +- - - - - - -+
+  //             |  argument0  |
+  //             +=============+
+  //             |             |
+  //             |   caller    |
+  //   higher    | expressions |
+  //  addresses  |             |
+
+
+  // Proper JS frames:
+
+  //    lower    |    Stack    |
+  //  addresses  |      ^      |
+  //             |      |      |
+  //             |             |
+  // ----------- +=============+ <--- sp (stack pointer, esp)
+  //             |  function   |
+  //             +-------------+
+  //             |             |
+  //             | expressions |
+  //             |             |
+  //             +-------------+
+  //      a      |             |
+  //      c      |   locals    |
+  //      t      |             |
+  //      i      +- - - - - - -+ <---
+  //      v   -4 |   local0    |   ^
+  //      a      +-------------+   |
+  //      t   -3 |    code     |   |
+  //      i      +-------------+   |
+  //      o   -2 |   context   |   | kLocal0Offset
+  //      n      +-------------+   |
+  //          -1 |  caller_pp  |   v
+  //      f      +-------------+ <--- fp (frame pointer, ebp)
+  //      r    0 |  caller_fp  |
+  //      a      +-------------+
+  //      m    1 |  caller_pc  |
+  //      e      +-------------+ <--- caller_sp (incl. parameters)
+  //           2 |             |
+  //             | parameters  |
+  //             |             |
+  //             +- - - - - - -+ <---
+  //          -2 | parameter0  |   ^
+  //             +-------------+   | kParam0Offset
+  //          -1 |  receiver   |   v
+  // ----------- +=============+ <--- pp (parameter pointer, edi)
+  //           0 |  function   |
+  //             +-------------+
+  //             |             |
+  //             |   caller    |
+  //   higher    | expressions |
+  //  addresses  |             |
+
+
+  // JS entry frames: When calling from C to JS, we construct two extra
+  // frames: An entry frame (C) and a trampoline frame (JS). The
+  // following pictures shows the two frames:
+
+  //    lower    |    Stack    |
+  //  addresses  |      ^      |
+  //             |      |      |
+  //             |             |
+  // ----------- +=============+ <--- sp (stack pointer, esp)
+  //             |             |
+  //             | parameters  |
+  //      t      |             |
+  //      r      +- - - - - - -+
+  //      a      | parameter0  |
+  //      m      +-------------+
+  //      p      |  receiver   |
+  //      o      +-------------+ <---
+  //      l      |  function   |   ^
+  //      i      +-------------+   |
+  //      n   -3 |    code     |   | kLocal0Offset
+  //      e      +-------------+
+  //          -2 |    NULL     | context is always NULL
+  //             +-------------+
+  //      f   -1 |    NULL     | caller pp is always NULL for entry frames
+  //      r      +-------------+ <--- fp (frame pointer, ebp)
+  //      a    0 |  caller fp  |
+  //      m      +-------------+
+  //      e    1 |  caller pc  |
+  //             +-------------+ <--- caller_sp (incl. parameters)
+  //             |      0      |
+  // ----------- +=============+ <--- pp (parameter pointer, edi)
+  //             |      0      |
+  //             +-------------+ <---
+  //                    .          ^
+  //                    .          |  try-handler (HandlerOffsets::kSize)
+  //                    .          v
+  //             +-------------+ <---
+  //          -5 | next top pp |
+  //             +-------------+
+  //      e   -4 | next top fp |
+  //      n      +-------------+ <---
+  //      t   -3 |     ebx     |   ^
+  //      r      +-------------+   |
+  //      y   -2 |     esi     |   |  callee-saved registers
+  //             +-------------+   |
+  //          -1 |     edi     |   v
+  //      f      +-------------+ <--- fp
+  //      r    0 |  caller fp  |
+  //      a      +-------------+      pp == NULL (parameter pointer)
+  //      m    1 |  caller pc  |
+  //      e      +-------------+ <--- caller sp
+  //           2 | code  entry |   ^
+  //             +-------------+   |
+  //           3 |  function   |   |
+  //             +-------------+   |  arguments passed from C code
+  //           4 |  receiver   |   |
+  //             +-------------+   |
+  //           5 |    argc     |   |
+  //             +-------------+   |
+  //           6 |    argv     |   v
+  //             +-------------+ <---
+  //             |             |
+  //   higher    |             |
+  //  addresses  |             |
+
+
+} }  // namespace v8::internal
+
+#endif  // V8_FRAMES_IA32_H_