Subversion Repositories HelenOS

Rev

Rev 3044 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3044 Rev 3274
Line 96... Line 96...
96 
 *
 96 
 *
97 
 * @param MEMCPY_DST	Destination address.
 97 
 * @param MEMCPY_DST	Destination address.
98 
 * @param MEMCPY_SRC	Source address.
 98 
 * @param MEMCPY_SRC	Source address.
99 
 * @param MEMCPY_SIZE	Number of bytes to copy.
 99 
 * @param MEMCPY_SIZE	Number of bytes to copy.
100 
 *
 100 
 *
101 
 * @retrun MEMCPY_SRC on success, 0 on failure.
 101 
 * @retrun MEMCPY_DST on success, 0 on failure.
102 
 */
 102 
 */
103 
memcpy:
 103 
memcpy:
104 
memcpy_from_uspace:
 104 
memcpy_from_uspace:
105 
memcpy_to_uspace:
 105 
memcpy_to_uspace:
106 
	movq MEMCPY_SRC, %rax
 106 
	movq MEMCPY_DST, %rax
107 
 
 107 
 
108 
	movq MEMCPY_SIZE, %rcx
 108 
	movq MEMCPY_SIZE, %rcx
109 
	shrq $3, %rcx			/* size / 8 */
 109 
	shrq $3, %rcx			/* size / 8 */
110
110
111 
	rep movsq			/* copy as much as possible word by word */
 111 
	rep movsq			/* copy as much as possible word by word */