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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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39 : Assembler(buffer, size), | 39 : Assembler(buffer, size), |
40 unresolved_(0), | 40 unresolved_(0), |
41 generating_stub_(false), | 41 generating_stub_(false), |
42 allow_stub_calls_(true), | 42 allow_stub_calls_(true), |
43 code_object_(Heap::undefined_value()) { | 43 code_object_(Heap::undefined_value()) { |
44 } | 44 } |
45 | 45 |
46 | 46 |
47 // We always generate arm code, never thumb code, even if V8 is compiled to | 47 // We always generate arm code, never thumb code, even if V8 is compiled to |
48 // thumb, so we require inter-working support | 48 // thumb, so we require inter-working support |
49 #if defined(__thumb__) && !defined(__THUMB_INTERWORK__) | 49 #if defined(__thumb__) && !defined(USE_THUMB_INTERWORK) |
50 #error "flag -mthumb-interwork missing" | 50 #error "flag -mthumb-interwork missing" |
51 #endif | 51 #endif |
52 | 52 |
53 | 53 |
54 // We do not support thumb inter-working with an arm architecture not supporting | 54 // We do not support thumb inter-working with an arm architecture not supporting |
55 // the blx instruction (below v5t) | 55 // the blx instruction (below v5t) |
56 #if defined(__THUMB_INTERWORK__) | 56 #if defined(USE_THUMB_INTERWORK) |
57 #if !defined(__ARM_ARCH_5T__) && \ | 57 #if !defined(__ARM_ARCH_5T__) && \ |
58 !defined(__ARM_ARCH_5TE__) && \ | 58 !defined(__ARM_ARCH_5TE__) && \ |
59 !defined(__ARM_ARCH_7A__) && \ | 59 !defined(__ARM_ARCH_7A__) && \ |
60 !defined(__ARM_ARCH_7__) | 60 !defined(__ARM_ARCH_7__) |
61 // add tests for other versions above v5t as required | 61 // add tests for other versions above v5t as required |
62 #error "for thumb inter-working we require architecture v5t or above" | 62 #error "for thumb inter-working we require architecture v5t or above" |
63 #endif | 63 #endif |
64 #endif | 64 #endif |
65 | 65 |
66 | 66 |
67 // Using blx may yield better code, so use it when required or when available | 67 // Using blx may yield better code, so use it when required or when available |
68 #if defined(__THUMB_INTERWORK__) || defined(__ARM_ARCH_5__) | 68 #if defined(USE_THUMB_INTERWORK) || defined(__ARM_ARCH_5__) |
69 #define USE_BLX 1 | 69 #define USE_BLX 1 |
70 #endif | 70 #endif |
71 | 71 |
72 // Using bx does not yield better code, so use it only when required | 72 // Using bx does not yield better code, so use it only when required |
73 #if defined(__THUMB_INTERWORK__) | 73 #if defined(USE_THUMB_INTERWORK) |
74 #define USE_BX 1 | 74 #define USE_BX 1 |
75 #endif | 75 #endif |
76 | 76 |
77 | 77 |
78 void MacroAssembler::Jump(Register target, Condition cond) { | 78 void MacroAssembler::Jump(Register target, Condition cond) { |
79 #if USE_BX | 79 #if USE_BX |
80 bx(target, cond); | 80 bx(target, cond); |
81 #else | 81 #else |
82 mov(pc, Operand(target), LeaveCC, cond); | 82 mov(pc, Operand(target), LeaveCC, cond); |
83 #endif | 83 #endif |
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992 #endif | 992 #endif |
993 mov(r0, Operand(p0)); | 993 mov(r0, Operand(p0)); |
994 push(r0); | 994 push(r0); |
995 mov(r0, Operand(Smi::FromInt(p1 - p0))); | 995 mov(r0, Operand(Smi::FromInt(p1 - p0))); |
996 push(r0); | 996 push(r0); |
997 CallRuntime(Runtime::kAbort, 2); | 997 CallRuntime(Runtime::kAbort, 2); |
998 // will not return here | 998 // will not return here |
999 } | 999 } |
1000 | 1000 |
1001 } } // namespace v8::internal | 1001 } } // namespace v8::internal |
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