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authorLinus Torvalds <torvalds@g5.osdl.org>2006-04-01 00:33:07 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-01 00:33:07 -0500
commit5b67e8dd5ae889fea7d01b905a570fa9a37b8785 (patch)
tree6a84a2bbe73b44fb13fb125ea07250cb778f0082 /arch/arm/kernel
parenta8b59e79ed55de97949ff1ca7d933786b95b39bd (diff)
parentcc3d48db75235adf0ae37d3287f6f9e14657d1ae (diff)
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3424/2: ixp23xx: fix uncompress.h for recent CRLF decompressor change [ARM] 3434/1: pxa i2s amsl define [ARM] 3425/1: xsc3: need to include pgtable-hwdef.h [ARM] Allow un-muxed syscalls to be available for everyone [ARM] 3420/1: Missing clobber in example code [ARM] nommu: fixups for the exception vectors [ARM] nommu: add nommu specific Kconfig and MMUEXT variable in Makefile [ARM] nommu: start-up code [ARM] nommu: MPU support in boot/compressed/head.S
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/entry-armv.S2
-rw-r--r--arch/arm/kernel/head-common.S217
-rw-r--r--arch/arm/kernel/head-nommu.S83
-rw-r--r--arch/arm/kernel/head.S207
-rw-r--r--arch/arm/kernel/signal.h2
-rw-r--r--arch/arm/kernel/traps.c9
6 files changed, 308 insertions, 212 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 355914ffb192..ab8e600c18c8 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -666,7 +666,7 @@ __kuser_helper_start:
666 * 666 *
667 * #define __kernel_dmb() \ 667 * #define __kernel_dmb() \
668 * asm volatile ( "mov r0, #0xffff0fff; mov lr, pc; sub pc, r0, #95" \ 668 * asm volatile ( "mov r0, #0xffff0fff; mov lr, pc; sub pc, r0, #95" \
669 * : : : "lr","cc" ) 669 * : : : "r0", "lr","cc" )
670 */ 670 */
671 671
672__kuser_memory_barrier: @ 0xffff0fa0 672__kuser_memory_barrier: @ 0xffff0fa0
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
new file mode 100644
index 000000000000..a52da0ddb43d
--- /dev/null
+++ b/arch/arm/kernel/head-common.S
@@ -0,0 +1,217 @@
1/*
2 * linux/arch/arm/kernel/head-common.S
3 *
4 * Copyright (C) 1994-2002 Russell King
5 * Copyright (c) 2003 ARM Limited
6 * All Rights Reserved
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14 .type __switch_data, %object
15__switch_data:
16 .long __mmap_switched
17 .long __data_loc @ r4
18 .long __data_start @ r5
19 .long __bss_start @ r6
20 .long _end @ r7
21 .long processor_id @ r4
22 .long __machine_arch_type @ r5
23 .long cr_alignment @ r6
24 .long init_thread_union + THREAD_START_SP @ sp
25
26/*
27 * The following fragment of code is executed with the MMU on in MMU mode,
28 * and uses absolute addresses; this is not position independent.
29 *
30 * r0 = cp#15 control register
31 * r1 = machine ID
32 * r9 = processor ID
33 */
34 .type __mmap_switched, %function
35__mmap_switched:
36 adr r3, __switch_data + 4
37
38 ldmia r3!, {r4, r5, r6, r7}
39 cmp r4, r5 @ Copy data segment if needed
401: cmpne r5, r6
41 ldrne fp, [r4], #4
42 strne fp, [r5], #4
43 bne 1b
44
45 mov fp, #0 @ Clear BSS (and zero fp)
461: cmp r6, r7
47 strcc fp, [r6],#4
48 bcc 1b
49
50 ldmia r3, {r4, r5, r6, sp}
51 str r9, [r4] @ Save processor ID
52 str r1, [r5] @ Save machine type
53 bic r4, r0, #CR_A @ Clear 'A' bit
54 stmia r6, {r0, r4} @ Save control register values
55 b start_kernel
56
57/*
58 * Exception handling. Something went wrong and we can't proceed. We
59 * ought to tell the user, but since we don't have any guarantee that
60 * we're even running on the right architecture, we do virtually nothing.
61 *
62 * If CONFIG_DEBUG_LL is set we try to print out something about the error
63 * and hope for the best (useful if bootloader fails to pass a proper
64 * machine ID for example).
65 */
66
67 .type __error_p, %function
68__error_p:
69#ifdef CONFIG_DEBUG_LL
70 adr r0, str_p1
71 bl printascii
72 b __error
73str_p1: .asciz "\nError: unrecognized/unsupported processor variant.\n"
74 .align
75#endif
76
77 .type __error_a, %function
78__error_a:
79#ifdef CONFIG_DEBUG_LL
80 mov r4, r1 @ preserve machine ID
81 adr r0, str_a1
82 bl printascii
83 mov r0, r4
84 bl printhex8
85 adr r0, str_a2
86 bl printascii
87 adr r3, 3f
88 ldmia r3, {r4, r5, r6} @ get machine desc list
89 sub r4, r3, r4 @ get offset between virt&phys
90 add r5, r5, r4 @ convert virt addresses to
91 add r6, r6, r4 @ physical address space
921: ldr r0, [r5, #MACHINFO_TYPE] @ get machine type
93 bl printhex8
94 mov r0, #'\t'
95 bl printch
96 ldr r0, [r5, #MACHINFO_NAME] @ get machine name
97 add r0, r0, r4
98 bl printascii
99 mov r0, #'\n'
100 bl printch
101 add r5, r5, #SIZEOF_MACHINE_DESC @ next machine_desc
102 cmp r5, r6
103 blo 1b
104 adr r0, str_a3
105 bl printascii
106 b __error
107str_a1: .asciz "\nError: unrecognized/unsupported machine ID (r1 = 0x"
108str_a2: .asciz ").\n\nAvailable machine support:\n\nID (hex)\tNAME\n"
109str_a3: .asciz "\nPlease check your kernel config and/or bootloader.\n"
110 .align
111#endif
112
113 .type __error, %function
114__error:
115#ifdef CONFIG_ARCH_RPC
116/*
117 * Turn the screen red on a error - RiscPC only.
118 */
119 mov r0, #0x02000000
120 mov r3, #0x11
121 orr r3, r3, r3, lsl #8
122 orr r3, r3, r3, lsl #16
123 str r3, [r0], #4
124 str r3, [r0], #4
125 str r3, [r0], #4
126 str r3, [r0], #4
127#endif
1281: mov r0, r0
129 b 1b
130
131
132/*
133 * Read processor ID register (CP#15, CR0), and look up in the linker-built
134 * supported processor list. Note that we can't use the absolute addresses
135 * for the __proc_info lists since we aren't running with the MMU on
136 * (and therefore, we are not in the correct address space). We have to
137 * calculate the offset.
138 *
139 * r9 = cpuid
140 * Returns:
141 * r3, r4, r6 corrupted
142 * r5 = proc_info pointer in physical address space
143 * r9 = cpuid (preserved)
144 */
145 .type __lookup_processor_type, %function
146__lookup_processor_type:
147 adr r3, 3f
148 ldmda r3, {r5 - r7}
149 sub r3, r3, r7 @ get offset between virt&phys
150 add r5, r5, r3 @ convert virt addresses to
151 add r6, r6, r3 @ physical address space
1521: ldmia r5, {r3, r4} @ value, mask
153 and r4, r4, r9 @ mask wanted bits
154 teq r3, r4
155 beq 2f
156 add r5, r5, #PROC_INFO_SZ @ sizeof(proc_info_list)
157 cmp r5, r6
158 blo 1b
159 mov r5, #0 @ unknown processor
1602: mov pc, lr
161
162/*
163 * This provides a C-API version of the above function.
164 */
165ENTRY(lookup_processor_type)
166 stmfd sp!, {r4 - r7, r9, lr}
167 mov r9, r0
168 bl __lookup_processor_type
169 mov r0, r5
170 ldmfd sp!, {r4 - r7, r9, pc}
171
172/*
173 * Look in include/asm-arm/procinfo.h and arch/arm/kernel/arch.[ch] for
174 * more information about the __proc_info and __arch_info structures.
175 */
176 .long __proc_info_begin
177 .long __proc_info_end
1783: .long .
179 .long __arch_info_begin
180 .long __arch_info_end
181
182/*
183 * Lookup machine architecture in the linker-build list of architectures.
184 * Note that we can't use the absolute addresses for the __arch_info
185 * lists since we aren't running with the MMU on (and therefore, we are
186 * not in the correct address space). We have to calculate the offset.
187 *
188 * r1 = machine architecture number
189 * Returns:
190 * r3, r4, r6 corrupted
191 * r5 = mach_info pointer in physical address space
192 */
193 .type __lookup_machine_type, %function
194__lookup_machine_type:
195 adr r3, 3b
196 ldmia r3, {r4, r5, r6}
197 sub r3, r3, r4 @ get offset between virt&phys
198 add r5, r5, r3 @ convert virt addresses to
199 add r6, r6, r3 @ physical address space
2001: ldr r3, [r5, #MACHINFO_TYPE] @ get machine type
201 teq r3, r1 @ matches loader number?
202 beq 2f @ found
203 add r5, r5, #SIZEOF_MACHINE_DESC @ next machine_desc
204 cmp r5, r6
205 blo 1b
206 mov r5, #0 @ unknown machine
2072: mov pc, lr
208
209/*
210 * This provides a C-API version of the above function.
211 */
212ENTRY(lookup_machine_type)
213 stmfd sp!, {r4 - r6, lr}
214 mov r1, r0
215 bl __lookup_machine_type
216 mov r0, r5
217 ldmfd sp!, {r4 - r6, pc}
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
new file mode 100644
index 000000000000..b093ab8738b5
--- /dev/null
+++ b/arch/arm/kernel/head-nommu.S
@@ -0,0 +1,83 @@
1/*
2 * linux/arch/arm/kernel/head-nommu.S
3 *
4 * Copyright (C) 1994-2002 Russell King
5 * Copyright (C) 2003-2006 Hyok S. Choi
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * Common kernel startup code (non-paged MM)
12 * for 32-bit CPUs which has a process ID register(CP15).
13 *
14 */
15#include <linux/config.h>
16#include <linux/linkage.h>
17#include <linux/init.h>
18
19#include <asm/assembler.h>
20#include <asm/mach-types.h>
21#include <asm/procinfo.h>
22#include <asm/ptrace.h>
23#include <asm/constants.h>
24#include <asm/system.h>
25
26#define PROCINFO_INITFUNC 12
27
28/*
29 * Kernel startup entry point.
30 * ---------------------------
31 *
32 * This is normally called from the decompressor code. The requirements
33 * are: MMU = off, D-cache = off, I-cache = dont care, r0 = 0,
34 * r1 = machine nr.
35 *
36 * See linux/arch/arm/tools/mach-types for the complete list of machine
37 * numbers for r1.
38 *
39 */
40 __INIT
41 .type stext, %function
42ENTRY(stext)
43 msr cpsr_c, #PSR_F_BIT | PSR_I_BIT | MODE_SVC @ ensure svc mode
44 @ and irqs disabled
45 mrc p15, 0, r9, c0, c0 @ get processor id
46 bl __lookup_processor_type @ r5=procinfo r9=cpuid
47 movs r10, r5 @ invalid processor (r5=0)?
48 beq __error_p @ yes, error 'p'
49 bl __lookup_machine_type @ r5=machinfo
50 movs r8, r5 @ invalid machine (r5=0)?
51 beq __error_a @ yes, error 'a'
52
53 ldr r13, __switch_data @ address to jump to after
54 @ the initialization is done
55 adr lr, __after_proc_init @ return (PIC) address
56 add pc, r10, #PROCINFO_INITFUNC
57
58/*
59 * Set the Control Register and Read the process ID.
60 */
61 .type __after_proc_init, %function
62__after_proc_init:
63 mrc p15, 0, r0, c1, c0, 0 @ read control reg
64#ifdef CONFIG_ALIGNMENT_TRAP
65 orr r0, r0, #CR_A
66#else
67 bic r0, r0, #CR_A
68#endif
69#ifdef CONFIG_CPU_DCACHE_DISABLE
70 bic r0, r0, #CR_C
71#endif
72#ifdef CONFIG_CPU_BPREDICT_DISABLE
73 bic r0, r0, #CR_Z
74#endif
75#ifdef CONFIG_CPU_ICACHE_DISABLE
76 bic r0, r0, #CR_I
77#endif
78 mcr p15, 0, r0, c1, c0, 0 @ write control reg
79
80 mov pc, r13 @ clear the BSS and jump
81 @ to start_kernel
82
83#include "head-common.S"
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 53b6901f70a6..04b66a9328ef 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -102,49 +102,6 @@ ENTRY(stext)
102 adr lr, __enable_mmu @ return (PIC) address 102 adr lr, __enable_mmu @ return (PIC) address
103 add pc, r10, #PROCINFO_INITFUNC 103 add pc, r10, #PROCINFO_INITFUNC
104 104
105 .type __switch_data, %object
106__switch_data:
107 .long __mmap_switched
108 .long __data_loc @ r4
109 .long __data_start @ r5
110 .long __bss_start @ r6
111 .long _end @ r7
112 .long processor_id @ r4
113 .long __machine_arch_type @ r5
114 .long cr_alignment @ r6
115 .long init_thread_union + THREAD_START_SP @ sp
116
117/*
118 * The following fragment of code is executed with the MMU on, and uses
119 * absolute addresses; this is not position independent.
120 *
121 * r0 = cp#15 control register
122 * r1 = machine ID
123 * r9 = processor ID
124 */
125 .type __mmap_switched, %function
126__mmap_switched:
127 adr r3, __switch_data + 4
128
129 ldmia r3!, {r4, r5, r6, r7}
130 cmp r4, r5 @ Copy data segment if needed
1311: cmpne r5, r6
132 ldrne fp, [r4], #4
133 strne fp, [r5], #4
134 bne 1b
135
136 mov fp, #0 @ Clear BSS (and zero fp)
1371: cmp r6, r7
138 strcc fp, [r6],#4
139 bcc 1b
140
141 ldmia r3, {r4, r5, r6, sp}
142 str r9, [r4] @ Save processor ID
143 str r1, [r5] @ Save machine type
144 bic r4, r0, #CR_A @ Clear 'A' bit
145 stmia r6, {r0, r4} @ Save control register values
146 b start_kernel
147
148#if defined(CONFIG_SMP) 105#if defined(CONFIG_SMP)
149 .type secondary_startup, #function 106 .type secondary_startup, #function
150ENTRY(secondary_startup) 107ENTRY(secondary_startup)
@@ -367,166 +324,4 @@ __create_page_tables:
367 mov pc, lr 324 mov pc, lr
368 .ltorg 325 .ltorg
369 326
370 327#include "head-common.S"
371
372/*
373 * Exception handling. Something went wrong and we can't proceed. We
374 * ought to tell the user, but since we don't have any guarantee that
375 * we're even running on the right architecture, we do virtually nothing.
376 *
377 * If CONFIG_DEBUG_LL is set we try to print out something about the error
378 * and hope for the best (useful if bootloader fails to pass a proper
379 * machine ID for example).
380 */
381
382 .type __error_p, %function
383__error_p:
384#ifdef CONFIG_DEBUG_LL
385 adr r0, str_p1
386 bl printascii
387 b __error
388str_p1: .asciz "\nError: unrecognized/unsupported processor variant.\n"
389 .align
390#endif
391
392 .type __error_a, %function
393__error_a:
394#ifdef CONFIG_DEBUG_LL
395 mov r4, r1 @ preserve machine ID
396 adr r0, str_a1
397 bl printascii
398 mov r0, r4
399 bl printhex8
400 adr r0, str_a2
401 bl printascii
402 adr r3, 3f
403 ldmia r3, {r4, r5, r6} @ get machine desc list
404 sub r4, r3, r4 @ get offset between virt&phys
405 add r5, r5, r4 @ convert virt addresses to
406 add r6, r6, r4 @ physical address space
4071: ldr r0, [r5, #MACHINFO_TYPE] @ get machine type
408 bl printhex8
409 mov r0, #'\t'
410 bl printch
411 ldr r0, [r5, #MACHINFO_NAME] @ get machine name
412 add r0, r0, r4
413 bl printascii
414 mov r0, #'\n'
415 bl printch
416 add r5, r5, #SIZEOF_MACHINE_DESC @ next machine_desc
417 cmp r5, r6
418 blo 1b
419 adr r0, str_a3
420 bl printascii
421 b __error
422str_a1: .asciz "\nError: unrecognized/unsupported machine ID (r1 = 0x"
423str_a2: .asciz ").\n\nAvailable machine support:\n\nID (hex)\tNAME\n"
424str_a3: .asciz "\nPlease check your kernel config and/or bootloader.\n"
425 .align
426#endif
427
428 .type __error, %function
429__error:
430#ifdef CONFIG_ARCH_RPC
431/*
432 * Turn the screen red on a error - RiscPC only.
433 */
434 mov r0, #0x02000000
435 mov r3, #0x11
436 orr r3, r3, r3, lsl #8
437 orr r3, r3, r3, lsl #16
438 str r3, [r0], #4
439 str r3, [r0], #4
440 str r3, [r0], #4
441 str r3, [r0], #4
442#endif
4431: mov r0, r0
444 b 1b
445
446
447/*
448 * Read processor ID register (CP#15, CR0), and look up in the linker-built
449 * supported processor list. Note that we can't use the absolute addresses
450 * for the __proc_info lists since we aren't running with the MMU on
451 * (and therefore, we are not in the correct address space). We have to
452 * calculate the offset.
453 *
454 * r9 = cpuid
455 * Returns:
456 * r3, r4, r6 corrupted
457 * r5 = proc_info pointer in physical address space
458 * r9 = cpuid (preserved)
459 */
460 .type __lookup_processor_type, %function
461__lookup_processor_type:
462 adr r3, 3f
463 ldmda r3, {r5 - r7}
464 sub r3, r3, r7 @ get offset between virt&phys
465 add r5, r5, r3 @ convert virt addresses to
466 add r6, r6, r3 @ physical address space
4671: ldmia r5, {r3, r4} @ value, mask
468 and r4, r4, r9 @ mask wanted bits
469 teq r3, r4
470 beq 2f
471 add r5, r5, #PROC_INFO_SZ @ sizeof(proc_info_list)
472 cmp r5, r6
473 blo 1b
474 mov r5, #0 @ unknown processor
4752: mov pc, lr
476
477/*
478 * This provides a C-API version of the above function.
479 */
480ENTRY(lookup_processor_type)
481 stmfd sp!, {r4 - r7, r9, lr}
482 mov r9, r0
483 bl __lookup_processor_type
484 mov r0, r5
485 ldmfd sp!, {r4 - r7, r9, pc}
486
487/*
488 * Look in include/asm-arm/procinfo.h and arch/arm/kernel/arch.[ch] for
489 * more information about the __proc_info and __arch_info structures.
490 */
491 .long __proc_info_begin
492 .long __proc_info_end
4933: .long .
494 .long __arch_info_begin
495 .long __arch_info_end
496
497/*
498 * Lookup machine architecture in the linker-build list of architectures.
499 * Note that we can't use the absolute addresses for the __arch_info
500 * lists since we aren't running with the MMU on (and therefore, we are
501 * not in the correct address space). We have to calculate the offset.
502 *
503 * r1 = machine architecture number
504 * Returns:
505 * r3, r4, r6 corrupted
506 * r5 = mach_info pointer in physical address space
507 */
508 .type __lookup_machine_type, %function
509__lookup_machine_type:
510 adr r3, 3b
511 ldmia r3, {r4, r5, r6}
512 sub r3, r3, r4 @ get offset between virt&phys
513 add r5, r5, r3 @ convert virt addresses to
514 add r6, r6, r3 @ physical address space
5151: ldr r3, [r5, #MACHINFO_TYPE] @ get machine type
516 teq r3, r1 @ matches loader number?
517 beq 2f @ found
518 add r5, r5, #SIZEOF_MACHINE_DESC @ next machine_desc
519 cmp r5, r6
520 blo 1b
521 mov r5, #0 @ unknown machine
5222: mov pc, lr
523
524/*
525 * This provides a C-API version of the above function.
526 */
527ENTRY(lookup_machine_type)
528 stmfd sp!, {r4 - r6, lr}
529 mov r1, r0
530 bl __lookup_machine_type
531 mov r0, r5
532 ldmfd sp!, {r4 - r6, pc}
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
index 9991049c522d..27beece15502 100644
--- a/arch/arm/kernel/signal.h
+++ b/arch/arm/kernel/signal.h
@@ -7,6 +7,6 @@
7 * it under the terms of the GNU General Public License version 2 as 7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation. 8 * published by the Free Software Foundation.
9 */ 9 */
10#define KERN_SIGRETURN_CODE 0xffff0500 10#define KERN_SIGRETURN_CODE (CONFIG_VECTORS_BASE + 0x00000500)
11 11
12extern const unsigned long sigreturn_codes[7]; 12extern const unsigned long sigreturn_codes[7];
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index d566d5f4574d..35230a060108 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -688,6 +688,7 @@ EXPORT_SYMBOL(abort);
688 688
689void __init trap_init(void) 689void __init trap_init(void)
690{ 690{
691 unsigned long vectors = CONFIG_VECTORS_BASE;
691 extern char __stubs_start[], __stubs_end[]; 692 extern char __stubs_start[], __stubs_end[];
692 extern char __vectors_start[], __vectors_end[]; 693 extern char __vectors_start[], __vectors_end[];
693 extern char __kuser_helper_start[], __kuser_helper_end[]; 694 extern char __kuser_helper_start[], __kuser_helper_end[];
@@ -698,9 +699,9 @@ void __init trap_init(void)
698 * into the vector page, mapped at 0xffff0000, and ensure these 699 * into the vector page, mapped at 0xffff0000, and ensure these
699 * are visible to the instruction stream. 700 * are visible to the instruction stream.
700 */ 701 */
701 memcpy((void *)0xffff0000, __vectors_start, __vectors_end - __vectors_start); 702 memcpy((void *)vectors, __vectors_start, __vectors_end - __vectors_start);
702 memcpy((void *)0xffff0200, __stubs_start, __stubs_end - __stubs_start); 703 memcpy((void *)vectors + 0x200, __stubs_start, __stubs_end - __stubs_start);
703 memcpy((void *)0xffff1000 - kuser_sz, __kuser_helper_start, kuser_sz); 704 memcpy((void *)vectors + 0x1000 - kuser_sz, __kuser_helper_start, kuser_sz);
704 705
705 /* 706 /*
706 * Copy signal return handlers into the vector page, and 707 * Copy signal return handlers into the vector page, and
@@ -709,6 +710,6 @@ void __init trap_init(void)
709 memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes, 710 memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes,
710 sizeof(sigreturn_codes)); 711 sizeof(sigreturn_codes));
711 712
712 flush_icache_range(0xffff0000, 0xffff0000 + PAGE_SIZE); 713 flush_icache_range(vectors, vectors + PAGE_SIZE);
713 modify_domain(DOMAIN_USER, DOMAIN_CLIENT); 714 modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
714} 715}