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Side by Side Diff: src/mips/frames-mips.h

Issue 12217079: MIPS: Support pass-through of stub caller arguments (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 10 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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186 static const int kCallerPCOffset = +1 * kPointerSize; 186 static const int kCallerPCOffset = +1 * kPointerSize;
187 187
188 // MIPS-specific: a pointer to the old sp to avoid unnecessary calculations. 188 // MIPS-specific: a pointer to the old sp to avoid unnecessary calculations.
189 static const int kCallerSPOffset = +2 * kPointerSize; 189 static const int kCallerSPOffset = +2 * kPointerSize;
190 190
191 // FP-relative displacement of the caller's SP. 191 // FP-relative displacement of the caller's SP.
192 static const int kCallerSPDisplacement = +2 * kPointerSize; 192 static const int kCallerSPDisplacement = +2 * kPointerSize;
193 }; 193 };
194 194
195 195
196 class StandardFrameConstants : public AllStatic {
197 public:
198 // Fixed part of the frame consists of return address, caller fp,
199 // context and function.
200 static const int kFixedFrameSize = 4 * kPointerSize;
201 static const int kExpressionsOffset = -3 * kPointerSize;
202 static const int kMarkerOffset = -2 * kPointerSize;
203 static const int kContextOffset = -1 * kPointerSize;
204 static const int kCallerFPOffset = 0 * kPointerSize;
205 static const int kCallerPCOffset = +1 * kPointerSize;
206 static const int kCallerSPOffset = +2 * kPointerSize;
207
208 // Size of the MIPS 4 32-bit argument slots.
209 // This is just an alias with a shorter name. Use it from now on.
210 static const int kRArgsSlotsSize = 4 * kPointerSize;
211 static const int kRegularArgsSlotsSize = kRArgsSlotsSize;
212
213 // JS argument slots size.
214 static const int kJSArgsSlotsSize = 0 * kPointerSize;
215 // Assembly builtins argument slots size.
216 static const int kBArgsSlotsSize = 0 * kPointerSize;
217 };
218
219
220 class JavaScriptFrameConstants : public AllStatic { 196 class JavaScriptFrameConstants : public AllStatic {
221 public: 197 public:
222 // FP-relative. 198 // FP-relative.
223 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; 199 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset;
224 static const int kLastParameterOffset = +2 * kPointerSize; 200 static const int kLastParameterOffset = +2 * kPointerSize;
225 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; 201 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset;
226 202
227 // Caller SP-relative. 203 // Caller SP-relative.
228 static const int kParam0Offset = -2 * kPointerSize; 204 static const int kParam0Offset = -2 * kPointerSize;
229 static const int kReceiverOffset = -1 * kPointerSize; 205 static const int kReceiverOffset = -1 * kPointerSize;
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246 222
247 inline Object* JavaScriptFrame::function_slot_object() const { 223 inline Object* JavaScriptFrame::function_slot_object() const {
248 const int offset = JavaScriptFrameConstants::kFunctionOffset; 224 const int offset = JavaScriptFrameConstants::kFunctionOffset;
249 return Memory::Object_at(fp() + offset); 225 return Memory::Object_at(fp() + offset);
250 } 226 }
251 227
252 228
253 } } // namespace v8::internal 229 } } // namespace v8::internal
254 230
255 #endif 231 #endif
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