diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:15:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:15:32 +0200 |
| commit | 7d96027379c0f43f7169019c814cadca7487d507 (patch) | |
| tree | eb8cabc19347ff3a07301373480e340641c940ba /arch/x86_64/lib/copy_page.S | |
| parent | 201c943463f9581ed7aac02db5ab6bc3091f5c03 (diff) | |
| download | blackbird-op-linux-7d96027379c0f43f7169019c814cadca7487d507.tar.gz blackbird-op-linux-7d96027379c0f43f7169019c814cadca7487d507.zip | |
x86_64: prepare shared lib/copy_page.S
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86_64/lib/copy_page.S')
| -rw-r--r-- | arch/x86_64/lib/copy_page.S | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/arch/x86_64/lib/copy_page.S b/arch/x86_64/lib/copy_page.S deleted file mode 100644 index 727a5d46d2fc..000000000000 --- a/arch/x86_64/lib/copy_page.S +++ /dev/null @@ -1,119 +0,0 @@ -/* Written 2003 by Andi Kleen, based on a kernel by Evandro Menezes */ - -#include <linux/linkage.h> -#include <asm/dwarf2.h> - - ALIGN -copy_page_c: - CFI_STARTPROC - movl $4096/8,%ecx - rep movsq - ret - CFI_ENDPROC -ENDPROC(copy_page_c) - -/* Don't use streaming store because it's better when the target - ends up in cache. */ - -/* Could vary the prefetch distance based on SMP/UP */ - -ENTRY(copy_page) - CFI_STARTPROC - subq $3*8,%rsp - CFI_ADJUST_CFA_OFFSET 3*8 - movq %rbx,(%rsp) - CFI_REL_OFFSET rbx, 0 - movq %r12,1*8(%rsp) - CFI_REL_OFFSET r12, 1*8 - movq %r13,2*8(%rsp) - CFI_REL_OFFSET r13, 2*8 - - movl $(4096/64)-5,%ecx - .p2align 4 -.Loop64: - dec %rcx - - movq (%rsi), %rax - movq 8 (%rsi), %rbx - movq 16 (%rsi), %rdx - movq 24 (%rsi), %r8 - movq 32 (%rsi), %r9 - movq 40 (%rsi), %r10 - movq 48 (%rsi), %r11 - movq 56 (%rsi), %r12 - - prefetcht0 5*64(%rsi) - - movq %rax, (%rdi) - movq %rbx, 8 (%rdi) - movq %rdx, 16 (%rdi) - movq %r8, 24 (%rdi) - movq %r9, 32 (%rdi) - movq %r10, 40 (%rdi) - movq %r11, 48 (%rdi) - movq %r12, 56 (%rdi) - - leaq 64 (%rsi), %rsi - leaq 64 (%rdi), %rdi - - jnz .Loop64 - - movl $5,%ecx - .p2align 4 -.Loop2: - decl %ecx - - movq (%rsi), %rax - movq 8 (%rsi), %rbx - movq 16 (%rsi), %rdx - movq 24 (%rsi), %r8 - movq 32 (%rsi), %r9 - movq 40 (%rsi), %r10 - movq 48 (%rsi), %r11 - movq 56 (%rsi), %r12 - - movq %rax, (%rdi) - movq %rbx, 8 (%rdi) - movq %rdx, 16 (%rdi) - movq %r8, 24 (%rdi) - movq %r9, 32 (%rdi) - movq %r10, 40 (%rdi) - movq %r11, 48 (%rdi) - movq %r12, 56 (%rdi) - - leaq 64(%rdi),%rdi - leaq 64(%rsi),%rsi - - jnz .Loop2 - - movq (%rsp),%rbx - CFI_RESTORE rbx - movq 1*8(%rsp),%r12 - CFI_RESTORE r12 - movq 2*8(%rsp),%r13 - CFI_RESTORE r13 - addq $3*8,%rsp - CFI_ADJUST_CFA_OFFSET -3*8 - ret -.Lcopy_page_end: - CFI_ENDPROC -ENDPROC(copy_page) - - /* Some CPUs run faster using the string copy instructions. - It is also a lot simpler. Use this when possible */ - -#include <asm/cpufeature.h> - - .section .altinstr_replacement,"ax" -1: .byte 0xeb /* jmp <disp8> */ - .byte (copy_page_c - copy_page) - (2f - 1b) /* offset */ -2: - .previous - .section .altinstructions,"a" - .align 8 - .quad copy_page - .quad 1b - .byte X86_FEATURE_REP_GOOD - .byte .Lcopy_page_end - copy_page - .byte 2b - 1b - .previous |
