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-rw-r--r--arch/arm/kernel/entry-common.S29
1 files changed, 4 insertions, 25 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index ed7941277ca2..91069666af9f 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -86,35 +86,14 @@ ENDPROC(ret_to_user)
86 */ 86 */
87ENTRY(ret_from_fork) 87ENTRY(ret_from_fork)
88 bl schedule_tail 88 bl schedule_tail
89 cmp r5, #0
90 movne r0, r4
91 movne lr, pc
92 movne pc, r5
89 get_thread_info tsk 93 get_thread_info tsk
90 mov why, #1
91 b ret_slow_syscall 94 b ret_slow_syscall
92ENDPROC(ret_from_fork) 95ENDPROC(ret_from_fork)
93 96
94ENTRY(ret_from_kernel_thread)
95 UNWIND(.fnstart)
96 UNWIND(.cantunwind)
97 bl schedule_tail
98 mov r0, r4
99 adr lr, BSYM(1f) @ kernel threads should not exit
100 mov pc, r5
1011: bl do_exit
102 nop
103 UNWIND(.fnend)
104ENDPROC(ret_from_kernel_thread)
105
106/*
107 * turn a kernel thread into userland process
108 * use: ret_from_kernel_execve(struct pt_regs *normal)
109 */
110ENTRY(ret_from_kernel_execve)
111 mov why, #0 @ not a syscall
112 str why, [r0, #S_R0] @ ... and we want 0 in ->ARM_r0 as well
113 get_thread_info tsk @ thread structure
114 mov sp, r0 @ stack pointer just under pt_regs
115 b ret_slow_syscall
116ENDPROC(ret_from_kernel_execve)
117
118 .equ NR_syscalls,0 97 .equ NR_syscalls,0
119#define CALL(x) .equ NR_syscalls,NR_syscalls+1 98#define CALL(x) .equ NR_syscalls,NR_syscalls+1
120#include "calls.S" 99#include "calls.S"