xref: /OK3568_Linux_fs/kernel/arch/x86/um/asm/checksum_64.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * Licensed under the GPL
3*4882a593Smuzhiyun  */
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun #ifndef __UM_SYSDEP_CHECKSUM_H
6*4882a593Smuzhiyun #define __UM_SYSDEP_CHECKSUM_H
7*4882a593Smuzhiyun 
add32_with_carry(unsigned a,unsigned b)8*4882a593Smuzhiyun static inline unsigned add32_with_carry(unsigned a, unsigned b)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun         asm("addl %2,%0\n\t"
11*4882a593Smuzhiyun             "adcl $0,%0"
12*4882a593Smuzhiyun             : "=r" (a)
13*4882a593Smuzhiyun             : "0" (a), "r" (b));
14*4882a593Smuzhiyun         return a;
15*4882a593Smuzhiyun }
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun extern __sum16 ip_compute_csum(const void *buff, int len);
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun #endif
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