Subversion Repositories HelenOS-historic

Rev

Rev 390 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 390 Rev 392
Line 35... Line 35...
35 
.text
 35 
.text
36 
 
 36 
 
37 
.global paging_on
 37 
.global paging_on
38 
.global enable_l_apic_in_msr
 38 
.global enable_l_apic_in_msr
39 
.global interrupt_handlers
 39 
.global interrupt_handlers
40 
.global memsetb
 - 
 
41 
.global memsetw
 - 
 
42 
 
 40 
 
43 
## Turn paging on
 41 
## Turn paging on
44 
#
 42 
#
45 
# Enable paging and write-back caching in CR0.
 43 
# Enable paging and write-back caching in CR0.
46 
#
 44 
#
Line 149... Line 147...
149 
#	handler 128 192
 147 
#	handler 128 192
150 
#	handler 192 256
 148 
#	handler 192 256
151 
h_end:
 149 
h_end:
152 
 
 150 
 
153 
 
 151 
 
154 
## Fill memory with bytes
 - 
 
155 
#
 - 
 
156 
# Fill a given number of bytes (2nd argument)
 - 
 
157 
# at memory defined by 1st argument with the
 - 
 
158 
# byte value defined by 3rd argument.
 - 
 
159 
#
 - 
 
160 
DST=12
 - 
 
161 
CNT=16
 - 
 
162 
X=20
 - 
 
163 
memsetb:
 - 
 
164 
	push %eax
 - 
 
165 
	push %edi
 - 
 
166 
 
 - 
 
167 
	movl CNT(%esp),%ecx
 - 
 
168 
	movl DST(%esp),%edi
 - 
 
169 
	movl X(%esp),%eax
 - 
 
170 
 
 - 
 
171 
	rep stosb %al,%es:(%edi)
 - 
 
172 
 
 - 
 
173 
	pop %edi
 - 
 
174 
	pop %eax
 - 
 
175 
	ret
 - 
 
176 
 
 - 
 
177 
 
 - 
 
178 
## Fill memory with words
 - 
 
179 
#
 - 
 
180 
# Fill a given number of words (2nd argument)
 - 
 
181 
# at memory defined by 1st argument with the
 - 
 
182 
# word value defined by 3rd argument.
 - 
 
183 
#
 - 
 
184 
DST=12
 - 
 
185 
CNT=16
 - 
 
186 
X=20
 - 
 
187 
memsetw:
 - 
 
188 
	push %eax
 - 
 
189 
	push %edi
 - 
 
190 
 
 - 
 
191 
	movl CNT(%esp),%ecx
 - 
 
192 
	movl DST(%esp),%edi
 - 
 
193 
	movl X(%esp),%eax
 - 
 
194 
 
 - 
 
195 
	rep stosw %ax,%es:(%edi)
 - 
 
196 
 
 - 
 
197 
	pop %edi
 - 
 
198 
	pop %eax
 - 
 
199 
 
 - 
 
200 
	ret
 - 
 
201 
 
 - 
 
202 
 
 - 
 
203 
# THIS IS USERSPACE CODE
 152 
# THIS IS USERSPACE CODE
204 
.global utext
 153 
.global utext
205 
utext:
 154 
utext:
206 
	xor %ax,%ax
 155 
	xor %ax,%ax
207 
	mov %ax,%ds
 156 
	mov %ax,%ds