---

yaml --- r: 14215 b: refs/heads/master c: a5b250a h: refs/heads/master i: 14213: 0f41c84 14211: 2ef12ad 14207: 66c348e v: v3
git-mirror · Nov 15, 2005 · 832a0d0 · 832a0d0
1 parent b02843d
commit 832a0d0
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Showing 5 changed files with 3 additions and 311 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a6f5deb2be4c82f24fefadcbf7e448f540c05ae6
+refs/heads/master: a5b250a428aabc619ace872f8220a7d0b8f7d557
diff --git a/trunk/arch/x86_64/lib/clear_page.S b/trunk/arch/x86_64/lib/clear_page.S
@@ -5,46 +5,8 @@
 	.globl clear_page
 	.p2align 4
 clear_page:
-	xorl   %eax,%eax
-	movl   $4096/64,%ecx
-	.p2align 4
-.Lloop:
-	decl	%ecx
-#define PUT(x) movq %rax,x*8(%rdi) 
-	movq %rax,(%rdi)
-	PUT(1)
-	PUT(2)
-	PUT(3)
-	PUT(4)
-	PUT(5)
-	PUT(6)
-	PUT(7)
-	leaq	64(%rdi),%rdi
-	jnz	.Lloop
-	nop
-	ret
-clear_page_end:	
-
-	/* C stepping K8 run faster using the string instructions.
-	   It is also a lot simpler. Use this when possible */
-
-#include <asm/cpufeature.h>
-
-	.section .altinstructions,"a"
-	.align 8
-	.quad  clear_page
-	.quad  clear_page_c
-	.byte  X86_FEATURE_K8_C
-	.byte  clear_page_end-clear_page	
-	.byte  clear_page_c_end-clear_page_c
-	.previous
-
-	.section .altinstr_replacement,"ax"
-clear_page_c:
 	movl $4096/8,%ecx
 	xorl %eax,%eax
 	rep 
 	stosq
 	ret
-clear_page_c_end:
-	.previous
diff --git a/trunk/arch/x86_64/lib/copy_page.S b/trunk/arch/x86_64/lib/copy_page.S
@@ -8,94 +8,7 @@
 	.globl copy_page
 	.p2align 4
 copy_page:
-	subq	$3*8,%rsp
-	movq	%rbx,(%rsp)
-	movq	%r12,1*8(%rsp)
-	movq	%r13,2*8(%rsp)
-
-	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
-	movq	1*8(%rsp),%r12
-	movq	2*8(%rsp),%r13
-	addq	$3*8,%rsp
-	ret
-
-	/* C stepping K8 run faster using the string copy instructions.
-	   It is also a lot simpler. Use this when possible */
-
-#include <asm/cpufeature.h>		
-
-	.section .altinstructions,"a"
-	.align 8
-	.quad  copy_page
-	.quad  copy_page_c
-	.byte  X86_FEATURE_K8_C
-	.byte  copy_page_c_end-copy_page_c
-	.byte  copy_page_c_end-copy_page_c
-	.previous
-
-	.section .altinstr_replacement,"ax"
-copy_page_c:
 	movl $4096/8,%ecx
 	rep 
 	movsq 
 	ret
-copy_page_c_end:
-	.previous
diff --git a/trunk/arch/x86_64/lib/memcpy.S b/trunk/arch/x86_64/lib/memcpy.S
@@ -11,102 +11,15 @@
  * 
  * Output:
  * rax original destination
+ * 
+ * TODO: check best memcpy for PSC
  */	
 
  	.globl __memcpy
 	.globl memcpy
 	.p2align 4
 __memcpy:
 memcpy:		
-	pushq %rbx
-	movq %rdi,%rax
-
-	movl %edx,%ecx
-	shrl $6,%ecx
-	jz .Lhandle_tail
-
-	.p2align 4
-.Lloop_64:
-	decl %ecx
-
-	movq (%rsi),%r11
-	movq 8(%rsi),%r8
-
-	movq %r11,(%rdi)
-	movq %r8,1*8(%rdi)
-
-	movq 2*8(%rsi),%r9
-	movq 3*8(%rsi),%r10
-
-	movq %r9,2*8(%rdi)
-	movq %r10,3*8(%rdi)
-
-	movq 4*8(%rsi),%r11
-	movq 5*8(%rsi),%r8
-
-	movq %r11,4*8(%rdi)
-	movq %r8,5*8(%rdi)
-
-	movq 6*8(%rsi),%r9
-	movq 7*8(%rsi),%r10
-
-	movq %r9,6*8(%rdi)
-	movq %r10,7*8(%rdi)
-
-	leaq 64(%rsi),%rsi
-	leaq 64(%rdi),%rdi
-	jnz  .Lloop_64
-
-.Lhandle_tail:
-	movl %edx,%ecx
-	andl $63,%ecx
-	shrl $3,%ecx
-	jz   .Lhandle_7
-	.p2align 4
-.Lloop_8: 
-	decl %ecx
-	movq (%rsi),%r8
-	movq %r8,(%rdi) 
-	leaq 8(%rdi),%rdi
-	leaq 8(%rsi),%rsi
-	jnz  .Lloop_8
-
-.Lhandle_7:
-	movl %edx,%ecx
-	andl $7,%ecx
-	jz .Lende
-	.p2align 4
-.Lloop_1:
-	movb (%rsi),%r8b
-	movb %r8b,(%rdi) 
-	incq %rdi
-	incq %rsi
-	decl %ecx
-	jnz .Lloop_1
-
-.Lende: 	
-	popq %rbx
-	ret
-.Lfinal:
-
-	/* C stepping K8 run faster using the string copy instructions.
-	   It is also a lot simpler. Use this when possible */
-
-	.section .altinstructions,"a"
-	.align 8
-	.quad  memcpy
-	.quad  memcpy_c
-	.byte  X86_FEATURE_K8_C
-	.byte  .Lfinal-memcpy
-	.byte  memcpy_c_end-memcpy_c	
-	.previous
-
-	.section .altinstr_replacement,"ax"
- /* rdi	destination
-  * rsi source
-  * rdx count
-  */			
-memcpy_c:
 	movq %rdi,%rax
 	movl %edx,%ecx
 	shrl $3,%ecx
@@ -117,5 +30,3 @@ memcpy_c:
 	rep
 	movsb
 	ret
-memcpy_c_end:
-	.previous
diff --git a/trunk/arch/x86_64/lib/memset.S b/trunk/arch/x86_64/lib/memset.S
@@ -13,98 +13,6 @@
 	.p2align 4
 memset:	
 __memset:
-	movq %rdi,%r10
-	movq %rdx,%r11
-
-	/* expand byte value  */
-	movzbl %sil,%ecx
-	movabs $0x0101010101010101,%rax
-	mul    %rcx		/* with rax, clobbers rdx */
-
-	/* align dst */
-	movl  %edi,%r9d		
-	andl  $7,%r9d	
-	jnz  .Lbad_alignment
-.Lafter_bad_alignment:
-
-	movl %r11d,%ecx
-	shrl $6,%ecx
-	jz	 .Lhandle_tail
-
-	.p2align 4
-.Lloop_64:	
-	decl   %ecx
-	movq  %rax,(%rdi) 
-	movq  %rax,8(%rdi) 
-	movq  %rax,16(%rdi) 
-	movq  %rax,24(%rdi) 
-	movq  %rax,32(%rdi) 
-	movq  %rax,40(%rdi) 
-	movq  %rax,48(%rdi) 
-	movq  %rax,56(%rdi) 
-	leaq  64(%rdi),%rdi
-	jnz    .Lloop_64
-
-	/* Handle tail in loops. The loops should be faster than hard
-	   to predict jump tables. */ 
-	.p2align 4	   
-.Lhandle_tail:
-	movl	%r11d,%ecx
-	andl    $63&(~7),%ecx
-	jz 		.Lhandle_7
-	shrl	$3,%ecx
-	.p2align 4
-.Lloop_8:
-	decl   %ecx
-	movq  %rax,(%rdi)
-	leaq  8(%rdi),%rdi
-	jnz    .Lloop_8
-
-.Lhandle_7:
-	movl	%r11d,%ecx
-	andl	$7,%ecx
-	jz      .Lende
-	.p2align 4
-.Lloop_1:
-	decl    %ecx
-	movb 	%al,(%rdi)
-	leaq	1(%rdi),%rdi
-	jnz     .Lloop_1
-
-.Lende:	
-	movq	%r10,%rax
-	ret
-
-.Lbad_alignment:
-	cmpq $7,%r11
-	jbe	.Lhandle_7
-	movq %rax,(%rdi)	/* unaligned store */
-	movq $8,%r8			
-	subq %r9,%r8 
-	addq %r8,%rdi
-	subq %r8,%r11
-	jmp .Lafter_bad_alignment
-
-	/* C stepping K8 run faster using the string instructions.
-	   It is also a lot simpler. Use this when possible */
-
-#include <asm/cpufeature.h>	
-
-	.section .altinstructions,"a"
-	.align 8
-	.quad  memset
-	.quad  memset_c
-	.byte  X86_FEATURE_K8_C
-	.byte  memset_c_end-memset_c
-	.byte  memset_c_end-memset_c
-	.previous
-
-	.section .altinstr_replacement,"ax"
- /* rdi	destination
-  * rsi value
-  * rdx count
-  */			
-memset_c:	
 	movq %rdi,%r9
 	movl %edx,%r8d
 	andl $7,%r8d		
@@ -121,5 +29,3 @@ memset_c:
 	stosb
 	movq %r9,%rax
 	ret
-memset_c_end:
-	.previous