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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 // 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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986 // Performs a truncating conversion of a floating point number as used by | 986 // Performs a truncating conversion of a floating point number as used by |
987 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. | 987 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. |
988 // Exits with 'result' holding the answer and all other registers clobbered. | 988 // Exits with 'result' holding the answer and all other registers clobbered. |
989 void ECMAToInt32(Register result, | 989 void ECMAToInt32(Register result, |
990 DwVfpRegister double_input, | 990 DwVfpRegister double_input, |
991 DwVfpRegister double_scratch, | 991 DwVfpRegister double_scratch, |
992 Register scratch, | 992 Register scratch, |
993 Register input_high, | 993 Register input_high, |
994 Register input_low); | 994 Register input_low); |
995 | 995 |
996 // Count leading zeros in a 32 bit word. On ARM5 and later it uses the clz | |
997 // instruction. On pre-ARM5 hardware this routine gives the wrong answer | |
998 // for 0 (31 instead of 32). Source and scratch can be the same in which case | |
999 // the source is clobbered. Source and zeros can also be the same in which | |
1000 // case scratch should be a different register. | |
1001 void CountLeadingZeros(Register zeros, | |
1002 Register source, | |
1003 Register scratch); | |
1004 | |
1005 // Check whether d16-d31 are available on the CPU. The result is given by the | 996 // Check whether d16-d31 are available on the CPU. The result is given by the |
1006 // Z condition flag: Z==0 if d16-d31 available, Z==1 otherwise. | 997 // Z condition flag: Z==0 if d16-d31 available, Z==1 otherwise. |
1007 void CheckFor32DRegs(Register scratch); | 998 void CheckFor32DRegs(Register scratch); |
1008 | 999 |
1009 | 1000 |
1010 // --------------------------------------------------------------------------- | 1001 // --------------------------------------------------------------------------- |
1011 // Runtime calls | 1002 // Runtime calls |
1012 | 1003 |
1013 // Call a code stub. | 1004 // Call a code stub. |
1014 void CallStub(CodeStub* stub, | 1005 void CallStub(CodeStub* stub, |
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1450 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 1441 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
1451 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 1442 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
1452 #else | 1443 #else |
1453 #define ACCESS_MASM(masm) masm-> | 1444 #define ACCESS_MASM(masm) masm-> |
1454 #endif | 1445 #endif |
1455 | 1446 |
1456 | 1447 |
1457 } } // namespace v8::internal | 1448 } } // namespace v8::internal |
1458 | 1449 |
1459 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 1450 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ |
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