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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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