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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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 |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_A64_MACRO_ASSEMBLER_A64_H_ | 28 #ifndef V8_ARM64_MACRO_ASSEMBLER_ARM64_H_ |
29 #define V8_A64_MACRO_ASSEMBLER_A64_H_ | 29 #define V8_ARM64_MACRO_ASSEMBLER_ARM64_H_ |
30 | 30 |
31 #include <vector> | 31 #include <vector> |
32 | 32 |
33 #include "v8globals.h" | 33 #include "v8globals.h" |
34 #include "globals.h" | 34 #include "globals.h" |
35 | 35 |
36 #include "a64/assembler-a64-inl.h" | 36 #include "arm64/assembler-arm64-inl.h" |
37 | 37 |
38 namespace v8 { | 38 namespace v8 { |
39 namespace internal { | 39 namespace internal { |
40 | 40 |
41 #define LS_MACRO_LIST(V) \ | 41 #define LS_MACRO_LIST(V) \ |
42 V(Ldrb, Register&, rt, LDRB_w) \ | 42 V(Ldrb, Register&, rt, LDRB_w) \ |
43 V(Strb, Register&, rt, STRB_w) \ | 43 V(Strb, Register&, rt, STRB_w) \ |
44 V(Ldrsb, Register&, rt, rt.Is64Bits() ? LDRSB_x : LDRSB_w) \ | 44 V(Ldrsb, Register&, rt, rt.Is64Bits() ? LDRSB_x : LDRSB_w) \ |
45 V(Ldrh, Register&, rt, LDRH_w) \ | 45 V(Ldrh, Register&, rt, LDRH_w) \ |
46 V(Strh, Register&, rt, STRH_w) \ | 46 V(Strh, Register&, rt, STRH_w) \ |
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1205 // ---- Floating point helpers ---- | 1205 // ---- Floating point helpers ---- |
1206 | 1206 |
1207 // Perform a conversion from a double to a signed int64. If the input fits in | 1207 // Perform a conversion from a double to a signed int64. If the input fits in |
1208 // range of the 64-bit result, execution branches to done. Otherwise, | 1208 // range of the 64-bit result, execution branches to done. Otherwise, |
1209 // execution falls through, and the sign of the result can be used to | 1209 // execution falls through, and the sign of the result can be used to |
1210 // determine if overflow was towards positive or negative infinity. | 1210 // determine if overflow was towards positive or negative infinity. |
1211 // | 1211 // |
1212 // On successful conversion, the least significant 32 bits of the result are | 1212 // On successful conversion, the least significant 32 bits of the result are |
1213 // equivalent to the ECMA-262 operation "ToInt32". | 1213 // equivalent to the ECMA-262 operation "ToInt32". |
1214 // | 1214 // |
1215 // Only public for the test code in test-code-stubs-a64.cc. | 1215 // Only public for the test code in test-code-stubs-arm64.cc. |
1216 void TryConvertDoubleToInt64(Register result, | 1216 void TryConvertDoubleToInt64(Register result, |
1217 DoubleRegister input, | 1217 DoubleRegister input, |
1218 Label* done); | 1218 Label* done); |
1219 | 1219 |
1220 // Performs a truncating conversion of a floating point number as used by | 1220 // Performs a truncating conversion of a floating point number as used by |
1221 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. | 1221 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. |
1222 // Exits with 'result' holding the answer. | 1222 // Exits with 'result' holding the answer. |
1223 void TruncateDoubleToI(Register result, DoubleRegister double_input); | 1223 void TruncateDoubleToI(Register result, DoubleRegister double_input); |
1224 | 1224 |
1225 // Performs a truncating conversion of a heap number as used by | 1225 // Performs a truncating conversion of a heap number as used by |
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1956 // | 1956 // |
1957 // The return code from the system printf call will be returned in x0. | 1957 // The return code from the system printf call will be returned in x0. |
1958 void PrintfNoPreserve(const char * format, | 1958 void PrintfNoPreserve(const char * format, |
1959 const CPURegister& arg0 = NoCPUReg, | 1959 const CPURegister& arg0 = NoCPUReg, |
1960 const CPURegister& arg1 = NoCPUReg, | 1960 const CPURegister& arg1 = NoCPUReg, |
1961 const CPURegister& arg2 = NoCPUReg, | 1961 const CPURegister& arg2 = NoCPUReg, |
1962 const CPURegister& arg3 = NoCPUReg); | 1962 const CPURegister& arg3 = NoCPUReg); |
1963 | 1963 |
1964 // Code ageing support functions. | 1964 // Code ageing support functions. |
1965 | 1965 |
1966 // Code ageing on A64 works similarly to on ARM. When V8 wants to mark a | 1966 // Code ageing on ARM64 works similarly to on ARM. When V8 wants to mark a |
1967 // function as old, it replaces some of the function prologue (generated by | 1967 // function as old, it replaces some of the function prologue (generated by |
1968 // FullCodeGenerator::Generate) with a call to a special stub (ultimately | 1968 // FullCodeGenerator::Generate) with a call to a special stub (ultimately |
1969 // generated by GenerateMakeCodeYoungAgainCommon). The stub restores the | 1969 // generated by GenerateMakeCodeYoungAgainCommon). The stub restores the |
1970 // function prologue to its initial young state (indicating that it has been | 1970 // function prologue to its initial young state (indicating that it has been |
1971 // recently run) and continues. A young function is therefore one which has a | 1971 // recently run) and continues. A young function is therefore one which has a |
1972 // normal frame setup sequence, and an old function has a code age sequence | 1972 // normal frame setup sequence, and an old function has a code age sequence |
1973 // which calls a code ageing stub. | 1973 // which calls a code ageing stub. |
1974 | 1974 |
1975 // Set up a basic stack frame for young code (or code exempt from ageing) with | 1975 // Set up a basic stack frame for young code (or code exempt from ageing) with |
1976 // type FUNCTION. It may be patched later for code ageing support. This is | 1976 // type FUNCTION. It may be patched later for code ageing support. This is |
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2293 #ifdef GENERATED_CODE_COVERAGE | 2293 #ifdef GENERATED_CODE_COVERAGE |
2294 #error "Unsupported option" | 2294 #error "Unsupported option" |
2295 #define CODE_COVERAGE_STRINGIFY(x) #x | 2295 #define CODE_COVERAGE_STRINGIFY(x) #x |
2296 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) | 2296 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) |
2297 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 2297 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
2298 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 2298 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
2299 #else | 2299 #else |
2300 #define ACCESS_MASM(masm) masm-> | 2300 #define ACCESS_MASM(masm) masm-> |
2301 #endif | 2301 #endif |
2302 | 2302 |
2303 #endif // V8_A64_MACRO_ASSEMBLER_A64_H_ | 2303 #endif // V8_ARM64_MACRO_ASSEMBLER_ARM64_H_ |
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