projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ff428c | 1 | #------------------------------------------------------------------------------\r |
| 2 | #\r | |
| c33c6476 HT |
3 | # Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
| 4 | # This program and the accompanying materials\r | |
| b1ff428c | 5 | # are licensed and made available under the terms and conditions of the BSD License\r |
| 6 | # which accompanies this distribution. The full text of the license may be found at\r | |
| 7 | # http://opensource.org/licenses/bsd-license.php\r | |
| 8 | #\r | |
| 9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 11 | #\r | |
| 12 | # Module Name:\r | |
| 13 | #\r | |
| 14 | # SetMem.asm\r | |
| 15 | #\r | |
| 16 | # Abstract:\r | |
| 17 | #\r | |
| 18 | # SetMem function\r | |
| 19 | #\r | |
| 20 | # Notes:\r | |
| 21 | #\r | |
| 22 | #------------------------------------------------------------------------------\r | |
| 23 | \r | |
| 24 | .686:\r | |
| 25 | #.MODEL flat,C\r | |
| 26 | .xmm:\r | |
| 27 | .code:\r | |
| 28 | \r | |
| 29 | #------------------------------------------------------------------------------\r | |
| 30 | # VOID *\r | |
| 31 | # _mem_SetMem (\r | |
| 32 | # IN VOID *Buffer,\r | |
| 33 | # IN UINTN Count,\r | |
| 34 | # IN UINT8 Value\r | |
| 35 | # );\r | |
| 36 | #------------------------------------------------------------------------------\r | |
| 132f41f0 | 37 | ASM_GLOBAL ASM_PFX(InternalMemSetMem)\r |
| d3c0cbce | 38 | ASM_PFX(InternalMemSetMem):\r |
| b1ff428c | 39 | push %edi\r |
| 40 | movl 12(%esp), %edx # edx <- Count\r | |
| 41 | movl 8(%esp), %edi # edi <- Buffer\r | |
| 42 | movb 16(%esp), %al # al <- Value\r | |
| 43 | xorl %ecx, %ecx\r | |
| 44 | subl %edi, %ecx\r | |
| 45 | andl $15, %ecx # ecx + edi aligns on 16-byte boundary\r | |
| 46 | jz L0\r | |
| 47 | cmpl %edx, %ecx\r | |
| 48 | cmova %edx, %ecx\r | |
| 49 | subl %ecx, %edx\r | |
| 50 | rep\r | |
| 51 | stosb\r | |
| 52 | L0:\r | |
| 53 | movl %edx, %ecx\r | |
| 54 | andl $15, %edx\r | |
| 55 | shrl $4, %ecx # ecx <- # of DQwords to set\r | |
| 56 | jz L_SetBytes\r | |
| 57 | movb %al, %ah # ax <- Value | (Value << 8)\r | |
| 58 | addl $-16, %esp\r | |
| 59 | movdqu %xmm0, (%esp)\r | |
| 60 | movd %eax, %xmm0\r | |
| 61 | pshuflw $0, %xmm0, %xmm0\r | |
| 62 | movlhps %xmm0, %xmm0\r | |
| 63 | L1:\r | |
| 64 | movntdq %xmm0, (%edi)\r | |
| 65 | addl $16, %edi\r | |
| 66 | loop L1\r | |
| 67 | mfence\r | |
| 68 | movdqu (%esp), %xmm0\r | |
| 69 | addl $16, %esp # stack cleanup\r | |
| 70 | L_SetBytes:\r | |
| 71 | movl %edx, %ecx\r | |
| 72 | rep\r | |
| 73 | stosb\r | |
| 74 | movl 8(%esp), %eax # eax <- Buffer as return value\r | |
| 75 | pop %edi\r | |
| 76 | ret\r |