projects / mirror_edk2.git / blame
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|---|---|---|
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1 | /// Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r |
| 2 | /// This program and the accompanying materials\r | |
| c7f33ca4 | 3 | /// are licensed and made available under the terms and conditions of the BSD License\r |
| 4 | /// which accompanies this distribution. The full text of the license may be found at\r | |
| 5 | /// http://opensource.org/licenses/bsd-license.php\r | |
| 6 | ///\r | |
| 7 | /// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 8 | /// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 9 | ///\r | |
| 10 | /// Module Name: AccessGp.s\r | |
| 11 | ///\r | |
| 12 | ///\r | |
| 13 | /// IPF specific Global Pointer and Stack Pointer accessing functions\r | |
| 14 | ///\r | |
| 15 | \r | |
| 16 | //---------------------------------------------------------------------------------\r | |
| 17 | //++\r | |
| 18 | // AsmReadGp\r | |
| 19 | //\r | |
| 20 | // This routine is used to read the current value of 64-bit Global Pointer (GP).\r | |
| 21 | //\r | |
| 22 | // Arguments :\r | |
| 23 | //\r | |
| 24 | // On Entry :\r | |
| 25 | //\r | |
| 26 | // Return Value: The current GP value.\r | |
| 27 | //\r | |
| 28 | //--\r | |
| 29 | //----------------------------------------------------------------------------------\r | |
| 30 | .text\r | |
| 31 | .type AsmReadGp, @function\r | |
| 32 | .proc AsmReadGp\r | |
| 33 | \r | |
| 34 | AsmReadGp::\r | |
| 35 | mov r8 = gp;;\r | |
| 36 | br.ret.dpnt b0;;\r | |
| 37 | .endp AsmReadGp\r | |
| 38 | \r | |
| 39 | //---------------------------------------------------------------------------------\r | |
| 40 | //++\r | |
| 41 | // AsmWriteGp\r | |
| 42 | //\r | |
| 43 | // This routine is used to write the current value of 64-bit Global Pointer (GP).\r | |
| 44 | //\r | |
| 45 | // Arguments :\r | |
| 46 | //\r | |
| 47 | // On Entry : The value need to be written.\r | |
| 48 | //\r | |
| 49 | // Return Value: The value have been written.\r | |
| 50 | //\r | |
| 51 | //--\r | |
| 52 | //----------------------------------------------------------------------------------\r | |
| 53 | .text\r | |
| 54 | .type AsmWriteGp, @function\r | |
| 55 | .proc AsmWriteGp\r | |
| 56 | .regstk 1, 0, 0, 0\r | |
| 57 | \r | |
| 58 | AsmWriteGp::\r | |
| 59 | mov gp = in0\r | |
| 60 | mov r8 = in0;;\r | |
| 61 | br.ret.dpnt b0;;\r | |
| 62 | .endp AsmWriteGp\r | |
| 63 | \r | |
| 64 | //---------------------------------------------------------------------------------\r | |
| 65 | //++\r | |
| 66 | // AsmReadSp\r | |
| 67 | //\r | |
| 68 | // This routine is used to read the current value of 64-bit Stack Pointer (SP).\r | |
| 69 | //\r | |
| 70 | // Arguments :\r | |
| 71 | //\r | |
| 72 | // On Entry :\r | |
| 73 | //\r | |
| 74 | // Return Value: The current SP value.\r | |
| 75 | //\r | |
| 76 | //--\r | |
| 77 | //----------------------------------------------------------------------------------\r | |
| 78 | .text\r | |
| 79 | .type AsmReadSp, @function\r | |
| 80 | .proc AsmReadSp\r | |
| 81 | \r | |
| 82 | AsmReadSp::\r | |
| 83 | mov r8 = sp;;\r | |
| 84 | br.ret.dpnt b0;;\r | |
| 85 | .endp AsmReadSp\r |