projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ff428c | 1 | #\r |
| 2 | # ConvertAsm.py: Automatically generated from SetMem.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 | # SetMem.S\r | |
| 18 | #\r | |
| 19 | # Abstract:\r | |
| 20 | #\r | |
| 21 | # SetMem function\r | |
| 22 | #\r | |
| 23 | # Notes:\r | |
| 24 | #\r | |
| 25 | #------------------------------------------------------------------------------\r | |
| 26 | \r | |
| 27 | \r | |
| 28 | #------------------------------------------------------------------------------\r | |
| 29 | # VOID *\r | |
| 30 | # EFIAPI\r | |
| 31 | # InternalMemSetMem (\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 |
| b1ff428c | 38 | ASM_PFX(InternalMemSetMem):\r |
| 1fef058f | 39 | pushq %rdi\r |
| 40 | movq %rcx, %rdi # rdi <- Buffer\r | |
| 41 | movb %r8b, %al # al <- Value\r | |
| 42 | movq %rdi, %r9 # r9 <- Buffer as return value\r | |
| 43 | xorq %rcx, %rcx\r | |
| 44 | subq %rdi, %rcx\r | |
| 45 | andq $15, %rcx # rcx + rdi aligns on 16-byte boundary\r | |
| b1ff428c | 46 | jz L0\r |
| 1fef058f | 47 | cmpq %rdx, %rcx\r |
| 48 | cmova %rdx, %rcx\r | |
| 49 | subq %rcx, %rdx\r | |
| b1ff428c | 50 | rep stosb\r |
| 51 | L0:\r | |
| 1fef058f | 52 | movq %rdx, %rcx\r |
| 53 | andq $15, %rdx\r | |
| 54 | shrq $4, %rcx\r | |
| b1ff428c | 55 | jz L_SetBytes\r |
| 1fef058f | 56 | movb %al, %ah # ax <- Value repeats twice\r |
| 57 | movdqa %xmm0, 0x10(%rsp) # save xmm0\r | |
| 58 | movd %eax, %xmm0 # xmm0[0..16] <- Value repeats twice\r | |
| 59 | pshuflw $0, %xmm0, %xmm0 # xmm0[0..63] <- Value repeats 8 times\r | |
| 60 | movlhps %xmm0, %xmm0 # xmm0 <- Value repeats 16 times\r | |
| b1ff428c | 61 | L1:\r |
| 1fef058f | 62 | movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned\r |
| 63 | add $16, %rdi\r | |
| b1ff428c | 64 | loop L1\r |
| 65 | mfence\r | |
| 1fef058f | 66 | movdqa 0x10(%rsp), %xmm0 # restore xmm0\r |
| b1ff428c | 67 | L_SetBytes:\r |
| 1fef058f | 68 | movl %edx, %ecx # high 32 bits of rcx are always zero\r |
| b1ff428c | 69 | rep stosb\r |
| 1fef058f | 70 | movq %r9, %rax # rax <- Return value\r |
| 71 | popq %rdi\r | |
| b1ff428c | 72 | ret\r |