projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ff428c | 1 | #\r |
| 2 | # ConvertAsm.py: Automatically generated from ZeroMem.asm\r | |
| 3 | #\r | |
| 4 | #------------------------------------------------------------------------------\r | |
| 5 | #\r | |
| c33c6476 HT |
6 | # Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r |
| 7 | # This program and the accompanying materials\r | |
| b1ff428c | 8 | # are licensed and made available under the terms and conditions of the BSD License\r |
| 9 | # which accompanies this distribution. The full text of the license may be found at\r | |
| 10 | # http://opensource.org/licenses/bsd-license.php\r | |
| 11 | #\r | |
| 12 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 13 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 14 | #\r | |
| 15 | # Module Name:\r | |
| 16 | #\r | |
| 17 | # ZeroMem.S\r | |
| 18 | #\r | |
| 19 | # Abstract:\r | |
| 20 | #\r | |
| 21 | # ZeroMem function\r | |
| 22 | #\r | |
| 23 | # Notes:\r | |
| 24 | #\r | |
| 25 | #------------------------------------------------------------------------------\r | |
| 26 | \r | |
| 27 | \r | |
| 28 | #------------------------------------------------------------------------------\r | |
| 29 | # VOID *\r | |
| 30 | # InternalMemZeroMem (\r | |
| 31 | # IN VOID *Buffer,\r | |
| 32 | # IN UINTN Count\r | |
| 33 | # );\r | |
| 34 | #------------------------------------------------------------------------------\r | |
| 132f41f0 | 35 | ASM_GLOBAL ASM_PFX(InternalMemZeroMem)\r |
| b1ff428c | 36 | ASM_PFX(InternalMemZeroMem):\r |
| 1fef058f | 37 | pushq %rdi\r |
| 38 | movq %rcx, %rdi\r | |
| 39 | xorq %rcx, %rcx\r | |
| 40 | xorl %eax, %eax\r | |
| 41 | subq %rdi, %rcx\r | |
| 42 | andq $15, %rcx\r | |
| 43 | movq %rdi, %r8\r | |
| b1ff428c | 44 | jz L0\r |
| 1fef058f | 45 | cmpq %rdx, %rcx\r |
| 46 | cmova %rdx, %rcx\r | |
| 47 | subq %rcx, %rdx\r | |
| b1ff428c | 48 | rep stosb\r |
| 49 | L0:\r | |
| 1fef058f | 50 | movq %rdx, %rcx\r |
| 51 | andl $15, %edx\r | |
| 52 | shrq $4, %rcx\r | |
| b1ff428c | 53 | jz L_ZeroBytes\r |
| 1fef058f | 54 | pxor %xmm0, %xmm0\r |
| b1ff428c | 55 | L1:\r |
| 1fef058f | 56 | movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned\r |
| 57 | addq $16, %rdi\r | |
| b1ff428c | 58 | loop L1\r |
| 59 | mfence\r | |
| 60 | L_ZeroBytes:\r | |
| 1fef058f | 61 | movl %edx, %ecx\r |
| b1ff428c | 62 | rep stosb\r |
| 1fef058f | 63 | movq %r8, %rax\r |
| 64 | popq %rdi\r | |
| b1ff428c | 65 | ret\r |