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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions | 5 // modification, are permitted provided that the following conditions |
6 // are met: | 6 // are met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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48 | 48 |
49 // Get the CPU features enabled by the build. | 49 // Get the CPU features enabled by the build. |
50 static unsigned CpuFeaturesImpliedByCompiler() { | 50 static unsigned CpuFeaturesImpliedByCompiler() { |
51 unsigned answer = 0; | 51 unsigned answer = 0; |
52 return answer; | 52 return answer; |
53 } | 53 } |
54 | 54 |
55 | 55 |
56 void CpuFeatures::ProbeImpl(bool cross_compile) { | 56 void CpuFeatures::ProbeImpl(bool cross_compile) { |
57 supported_ |= CpuFeaturesImpliedByCompiler(); | 57 supported_ |= CpuFeaturesImpliedByCompiler(); |
58 cache_line_size_ = 128; | 58 icache_line_size_ = 128; |
59 | 59 |
60 // Only use statically determined features for cross compile (snapshot). | 60 // Only use statically determined features for cross compile (snapshot). |
61 if (cross_compile) return; | 61 if (cross_compile) return; |
62 | 62 |
63 // Detect whether frim instruction is supported (POWER5+) | 63 // Detect whether frim instruction is supported (POWER5+) |
64 // For now we will just check for processors we know do not | 64 // For now we will just check for processors we know do not |
65 // support it | 65 // support it |
66 #ifndef USE_SIMULATOR | 66 #ifndef USE_SIMULATOR |
67 // Probe for additional features at runtime. | 67 // Probe for additional features at runtime. |
68 base::CPU cpu; | 68 base::CPU cpu; |
69 #if V8_TARGET_ARCH_PPC64 | 69 #if V8_TARGET_ARCH_PPC64 |
70 if (cpu.part() == base::CPU::PPC_POWER8) { | 70 if (cpu.part() == base::CPU::PPC_POWER8) { |
71 supported_ |= (1u << FPR_GPR_MOV); | 71 supported_ |= (1u << FPR_GPR_MOV); |
72 } | 72 } |
73 #endif | 73 #endif |
74 if (cpu.part() == base::CPU::PPC_POWER6 || | 74 if (cpu.part() == base::CPU::PPC_POWER6 || |
75 cpu.part() == base::CPU::PPC_POWER7 || | 75 cpu.part() == base::CPU::PPC_POWER7 || |
76 cpu.part() == base::CPU::PPC_POWER8) { | 76 cpu.part() == base::CPU::PPC_POWER8) { |
77 supported_ |= (1u << LWSYNC); | 77 supported_ |= (1u << LWSYNC); |
78 } | 78 } |
79 if (cpu.part() == base::CPU::PPC_POWER7 || | 79 if (cpu.part() == base::CPU::PPC_POWER7 || |
80 cpu.part() == base::CPU::PPC_POWER8) { | 80 cpu.part() == base::CPU::PPC_POWER8) { |
81 supported_ |= (1u << ISELECT); | 81 supported_ |= (1u << ISELECT); |
82 } | 82 } |
83 #if V8_OS_LINUX | 83 #if V8_OS_LINUX |
84 if (!(cpu.part() == base::CPU::PPC_G5 || cpu.part() == base::CPU::PPC_G4)) { | 84 if (!(cpu.part() == base::CPU::PPC_G5 || cpu.part() == base::CPU::PPC_G4)) { |
85 // Assume support | 85 // Assume support |
86 supported_ |= (1u << FPU); | 86 supported_ |= (1u << FPU); |
87 } | 87 } |
| 88 if (cpu.icache_line_size() != base::CPU::UNKNOWN_CACHE_LINE_SIZE) { |
| 89 icache_line_size_ = cpu.icache_line_size(); |
| 90 } |
88 #elif V8_OS_AIX | 91 #elif V8_OS_AIX |
89 // Assume support FP support and default cache line size | 92 // Assume support FP support and default cache line size |
90 supported_ |= (1u << FPU); | 93 supported_ |= (1u << FPU); |
91 #endif | 94 #endif |
92 #else // Simulator | 95 #else // Simulator |
93 supported_ |= (1u << FPU); | 96 supported_ |= (1u << FPU); |
94 supported_ |= (1u << LWSYNC); | 97 supported_ |= (1u << LWSYNC); |
95 supported_ |= (1u << ISELECT); | 98 supported_ |= (1u << ISELECT); |
96 #if V8_TARGET_ARCH_PPC64 | 99 #if V8_TARGET_ARCH_PPC64 |
97 supported_ |= (1u << FPR_GPR_MOV); | 100 supported_ |= (1u << FPR_GPR_MOV); |
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2474 | 2477 |
2475 trampoline_ = Trampoline(pc_offset() - size, tracked_branch_count_); | 2478 trampoline_ = Trampoline(pc_offset() - size, tracked_branch_count_); |
2476 } | 2479 } |
2477 } | 2480 } |
2478 | 2481 |
2479 | 2482 |
2480 } // namespace internal | 2483 } // namespace internal |
2481 } // namespace v8 | 2484 } // namespace v8 |
2482 | 2485 |
2483 #endif // V8_TARGET_ARCH_PPC | 2486 #endif // V8_TARGET_ARCH_PPC |
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