projects / mirror_edk2.git / blame
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1 | #------------------------------------------------------------------------------ |
| 2 | # | |
| 3 | # Copyright (c) 2008, Intel Corporation | |
| 4 | # All rights reserved. This program and the accompanying materials | |
| 5 | # are licensed and made available under the terms and conditions of the BSD License | |
| 6 | # which accompanies this distribution. The full text of the license may be found at | |
| 7 | # http://opensource.org/licenses/bsd-license.php | |
| 8 | # | |
| 9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| 10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| 11 | # | |
| 12 | # Module Name: | |
| 13 | # | |
| 14 | # EfiSetMemRep4.S | |
| 15 | # | |
| 16 | # Abstract: | |
| 17 | # | |
| 18 | # SetMem function | |
| 19 | # | |
| 20 | # Notes: | |
| 21 | # | |
| 22 | #------------------------------------------------------------------------------ | |
| 23 | #include <EfiBind.h> | |
| 24 | ||
| 25 | .code: | |
| 26 | ||
| 27 | .globl ASM_PFX(EfiCommonLibCopyMem) | |
| 28 | ||
| 29 | #------------------------------------------------------------------------------ | |
| 30 | # VOID | |
| 31 | # EfiCommonLibSetMem ( | |
| 32 | # OUT VOID *Buffer, | |
| 33 | # IN UINTN Size, | |
| 34 | # IN UINT8 Value | |
| 35 | # ); | |
| 36 | #------------------------------------------------------------------------------ | |
| 37 | ASM_PFX(EfiCommonLibSetMem): | |
| 38 | push %rdi | |
| 39 | cmp $0x0,%rdx | |
| 40 | je SetDone | |
| 41 | mov %rcx,%rdi | |
| 42 | mov %r8b,%al | |
| 43 | mov %al,%ah | |
| 44 | shrd $0x10,%eax,%ecx | |
| 45 | shld $0x10,%ecx,%eax | |
| 46 | mov %rdx,%rcx | |
| 47 | shr $0x2,%rcx | |
| 48 | rep stos %eax,%es:(%rdi) | |
| 49 | mov %rdx,%rcx | |
| 50 | and $0x3,%rcx | |
| 51 | rep stos %al,%es:(%rdi) | |
| 52 | SetDone: | |
| 53 | pop %rdi | |
| 54 | retq |