patch-2.0.21-2.1.0 linux/arch/i386/lib/checksum.c

• Lines: 102
• Date: Mon Sep 23 11:26:30 1996
• Orig file: lx2.0/v2.0.21/linux/arch/i386/lib/checksum.c
• Orig date: Wed Sep 27 09:57:18 1995

diff -u --recursive --new-file lx2.0/v2.0.21/linux/arch/i386/lib/checksum.c linux/arch/i386/lib/checksum.c
@@ -98,101 +98,6 @@
 
 
 /*
- * copy from fs while checksumming, otherwise like csum_partial
- */
-
-unsigned int csum_partial_copy_fromuser(const char *src, char *dst, 
-				  int len, int sum) {
-    __asm__("
-	testl $2, %%edi		# Check alignment.
-	jz 2f			# Jump if alignment is ok.
-	subl $2, %%ecx		# Alignment uses up two bytes.
-	jae 1f			# Jump if we had at least two bytes.
-	addl $2, %%ecx		# ecx was < 2.  Deal with it.
-	jmp 4f
-1:	movw %%fs:(%%esi), %%bx
-	addl $2, %%esi
-	movw %%bx, (%%edi)
-	addl $2, %%edi
-	addw %%bx, %%ax
-	adcl $0, %%eax
-2:
-	movl %%ecx, %%edx
-	shrl $5, %%ecx
-	jz 2f
-	testl %%esi, %%esi
-1:	movl %%fs:(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, (%%edi)
-
-	movl %%fs:4(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, 4(%%edi)
-
-	movl %%fs:8(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, 8(%%edi)
-
-	movl %%fs:12(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, 12(%%edi)
-
-	movl %%fs:16(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, 16(%%edi)
-
-	movl %%fs:20(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, 20(%%edi)
-
-	movl %%fs:24(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, 24(%%edi)
-
-	movl %%fs:28(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, 28(%%edi)
-
-	lea 32(%%esi), %%esi
-	lea 32(%%edi), %%edi
-	dec %%ecx
-	jne 1b
-	adcl $0, %%eax
-2:	movl %%edx, %%ecx
-	andl $28, %%edx
-	je 4f
-	shrl $2, %%edx
-	testl %%esi, %%esi
-3:	movl %%fs:(%%esi), %%ebx
-	adcl %%ebx, %%eax
-	movl %%ebx, (%%edi)
-	lea 4(%%esi), %%esi
-	lea 4(%%edi), %%edi
-	dec %%edx
-	jne 3b
-	adcl $0, %%eax
-4:	andl $3, %%ecx
-	jz 7f
-	cmpl $2, %%ecx
-	jb 5f
-	movw %%fs:(%%esi), %%cx
-	leal 2(%%esi), %%esi
-	movw %%cx, (%%edi)
-	leal 2(%%edi), %%edi
-	je 6f
-	shll $16,%%ecx
-5:	movb %%fs:(%%esi), %%cl
-	movb %%cl, (%%edi)
-6:	addl %%ecx, %%eax
-	adcl $0, %%eax
-7:
-	"
-	: "=a" (sum)
-	: "0"(sum), "c"(len), "S"(src), "D" (dst)
-	: "bx", "cx", "dx", "si", "di" );
-    return(sum);
-}
-/*
  * copy from ds while checksumming, otherwise like csum_partial
  */