Subversion Repositories HelenOS

Rev

Rev 3107 | Rev 3535 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3107 Rev 3403
Line 69... Line 69...
69 
 *
 69 
 *
70 
 * @param MEMCPY_DST(%esp)	Destination address.
 70 
 * @param MEMCPY_DST(%esp)	Destination address.
71 
 * @param MEMCPY_SRC(%esp)	Source address.
 71 
 * @param MEMCPY_SRC(%esp)	Source address.
72 
 * @param MEMCPY_SIZE(%esp)	Size.
 72 
 * @param MEMCPY_SIZE(%esp)	Size.
73 
 *
 73 
 *
74 
 * @return MEMCPY_SRC(%esp) on success and 0 on failure.
 74 
 * @return MEMCPY_DST(%esp) on success and 0 on failure.
75 
 */
 75 
 */
76 
memcpy:
 76 
memcpy:
77 
memcpy_from_uspace:
 77 
memcpy_from_uspace:
78 
memcpy_to_uspace:
 78 
memcpy_to_uspace:
79 
	movl %edi, %edx			/* save %edi */
 79 
	movl %edi, %edx			/* save %edi */
Line 94... Line 94...
94 
	rep movsb			/* copy the rest byte by byte */
 94 
	rep movsb			/* copy the rest byte by byte */
95 
 
 95 
 
96 
0:
 96 
0:
97 
	movl %edx, %edi
 97 
	movl %edx, %edi
98 
	movl %eax, %esi
 98 
	movl %eax, %esi
99 
	movl MEMCPY_SRC(%esp), %eax	/* MEMCPY_SRC(%esp), success */
 99 
	movl MEMCPY_DST(%esp), %eax	/* MEMCPY_DST(%esp), success */
100 
	ret
 100 
	ret
101
101
102 
/*
 102 
/*
103 
 * We got here from as_page_fault() after the memory operations
 103 
 * We got here from as_page_fault() after the memory operations
104 
 * above had caused a page fault.
 104 
 * above had caused a page fault.