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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
6 | 6 |
7 #include "src/codegen.h" | 7 #include "src/codegen.h" |
8 #include "src/debug/debug.h" | 8 #include "src/debug/debug.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
11 #include "src/runtime/runtime.h" | 11 #include "src/runtime/runtime.h" |
12 | 12 |
13 | 13 |
14 namespace v8 { | 14 namespace v8 { |
15 namespace internal { | 15 namespace internal { |
16 | 16 |
17 | 17 |
18 #define __ ACCESS_MASM(masm) | 18 #define __ ACCESS_MASM(masm) |
19 | 19 |
20 | 20 |
21 void Builtins::Generate_Adaptor(MacroAssembler* masm, | 21 void Builtins::Generate_Adaptor(MacroAssembler* masm, |
22 CFunctionId id, | 22 CFunctionId id, |
23 BuiltinExtraArguments extra_args) { | 23 BuiltinExtraArguments extra_args) { |
24 // ----------- S t a t e ------------- | 24 // ----------- S t a t e ------------- |
25 // -- a0 : number of arguments excluding receiver | 25 // -- a0 : number of arguments excluding receiver |
26 // -- a1 : called function (only guaranteed when | 26 // (only guaranteed when the called function |
27 // -- extra_args requires it) | 27 // is not marked as DontAdaptArguments) |
| 28 // -- a1 : called function |
28 // -- sp[0] : last argument | 29 // -- sp[0] : last argument |
29 // -- ... | 30 // -- ... |
30 // -- sp[4 * (argc - 1)] : first argument | 31 // -- sp[4 * (argc - 1)] : first argument |
31 // -- sp[4 * agrc] : receiver | 32 // -- sp[4 * agrc] : receiver |
32 // ----------------------------------- | 33 // ----------------------------------- |
33 __ AssertFunction(a1); | 34 __ AssertFunction(a1); |
34 | 35 |
35 // Make sure we operate in the context of the called function (for example | 36 // Make sure we operate in the context of the called function (for example |
36 // ConstructStubs implemented in C++ will be run in the context of the caller | 37 // ConstructStubs implemented in C++ will be run in the context of the caller |
37 // instead of the callee, due to the way that [[Construct]] is defined for | 38 // instead of the callee, due to the way that [[Construct]] is defined for |
38 // ordinary functions). | 39 // ordinary functions). |
39 // TODO(bmeurer): Can we make this more robust? | 40 // TODO(bmeurer): Can we make this more robust? |
40 __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); | 41 __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
41 | 42 |
42 // Insert extra arguments. | 43 // Insert extra arguments. |
43 int num_extra_args = 0; | 44 int num_extra_args = 0; |
44 if (extra_args == NEEDS_CALLED_FUNCTION) { | 45 if (extra_args == NEEDS_CALLED_FUNCTION) { |
45 num_extra_args = 1; | 46 num_extra_args = 1; |
46 __ push(a1); | 47 __ push(a1); |
47 } else { | 48 } else { |
48 DCHECK(extra_args == NO_EXTRA_ARGUMENTS); | 49 DCHECK(extra_args == NO_EXTRA_ARGUMENTS); |
49 } | 50 } |
50 | 51 |
51 // JumpToExternalReference expects a0 to contain the number of arguments | 52 // JumpToExternalReference expects a0 to contain the number of arguments |
52 // including the receiver and the extra arguments. | 53 // including the receiver and the extra arguments. But a0 is only valid |
| 54 // if the called function is marked as DontAdaptArguments, otherwise we |
| 55 // need to load the argument count from the SharedFunctionInfo. |
| 56 Label argc, done_argc; |
| 57 __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 58 __ lw(a2, |
| 59 FieldMemOperand(a2, SharedFunctionInfo::kFormalParameterCountOffset)); |
| 60 __ SmiUntag(a2); |
| 61 __ Branch(&argc, ne, a2, |
| 62 Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
| 63 __ Addu(a0, a2, num_extra_args + 1); |
| 64 __ jmp(&done_argc); |
| 65 __ bind(&argc); |
53 __ Addu(a0, a0, num_extra_args + 1); | 66 __ Addu(a0, a0, num_extra_args + 1); |
| 67 __ bind(&done_argc); |
| 68 |
54 __ JumpToExternalReference(ExternalReference(id, masm->isolate())); | 69 __ JumpToExternalReference(ExternalReference(id, masm->isolate())); |
55 } | 70 } |
56 | 71 |
57 | 72 |
58 // Load the built-in InternalArray function from the current context. | 73 // Load the built-in InternalArray function from the current context. |
59 static void GenerateLoadInternalArrayFunction(MacroAssembler* masm, | 74 static void GenerateLoadInternalArrayFunction(MacroAssembler* masm, |
60 Register result) { | 75 Register result) { |
61 // Load the native context. | 76 // Load the native context. |
62 | 77 |
63 __ lw(result, | 78 __ lw(result, |
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1891 } | 1906 } |
1892 } | 1907 } |
1893 | 1908 |
1894 | 1909 |
1895 #undef __ | 1910 #undef __ |
1896 | 1911 |
1897 } // namespace internal | 1912 } // namespace internal |
1898 } // namespace v8 | 1913 } // namespace v8 |
1899 | 1914 |
1900 #endif // V8_TARGET_ARCH_MIPS | 1915 #endif // V8_TARGET_ARCH_MIPS |
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