| // Inferno's libkern/vlop-386.s | |
| // http://code.google.com/p/inferno-os/source/browse/libkern/vlop-386.s | |
| // | |
| // Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. | |
| // Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved. | |
| // Portions Copyright 2009 The Go Authors. All rights reserved. | |
| // | |
| // Permission is hereby granted, free of charge, to any person obtaining a copy | |
| // of this software and associated documentation files (the "Software"), to deal | |
| // in the Software without restriction, including without limitation the rights | |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| // copies of the Software, and to permit persons to whom the Software is | |
| // furnished to do so, subject to the following conditions: | |
| // | |
| // The above copyright notice and this permission notice shall be included in | |
| // all copies or substantial portions of the Software. | |
| // | |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
| // THE SOFTWARE. | |
| /* | |
| * C runtime for 64-bit divide. | |
| */ | |
| TEXT _mul64by32(SB), 7, $0 | |
| MOVL r+0(FP), CX | |
| MOVL a+4(FP), AX | |
| MULL b+12(FP) | |
| MOVL AX, 0(CX) | |
| MOVL DX, BX | |
| MOVL a+8(FP), AX | |
| MULL b+12(FP) | |
| ADDL AX, BX | |
| MOVL BX, 4(CX) | |
| RET | |
| TEXT _div64by32(SB), 7, $0 | |
| MOVL r+12(FP), CX | |
| MOVL a+0(FP), AX | |
| MOVL a+4(FP), DX | |
| DIVL b+8(FP) | |
| MOVL DX, 0(CX) | |
| RET |