Merge branch 'samsung/exynos5' into next/soc2
[linux-2.6.git] / arch / arm / kernel / entry-common.S
index b2a27b6..54ee265 100644 (file)
 
 #include <asm/unistd.h>
 #include <asm/ftrace.h>
-#include <mach/entry-macro.S>
 #include <asm/unwind.h>
 
+#ifdef CONFIG_NEED_RET_TO_USER
+#include <mach/entry-macro.S>
+#else
+       .macro  arch_ret_to_user, tmp1, tmp2
+       .endm
+#endif
+
 #include "entry-header.S"
 
 
@@ -87,7 +93,7 @@ ENTRY(ret_from_fork)
        get_thread_info tsk
        ldr     r1, [tsk, #TI_FLAGS]            @ check for syscall tracing
        mov     why, #1
-       tst     r1, #_TIF_SYSCALL_TRACE         @ are we tracing syscalls?
+       tst     r1, #_TIF_SYSCALL_WORK          @ are we tracing syscalls?
        beq     ret_slow_syscall
        mov     r1, sp
        mov     r0, #1                          @ trace exit [IP = 1]
@@ -149,6 +155,11 @@ ENDPROC(ret_from_fork)
 #endif
 #endif
 
+.macro mcount_adjust_addr rd, rn
+       bic     \rd, \rn, #1            @ clear the Thumb bit if present
+       sub     \rd, \rd, #MCOUNT_INSN_SIZE
+.endm
+
 .macro __mcount suffix
        mcount_enter
        ldr     r0, =ftrace_trace_function
@@ -173,8 +184,7 @@ ENDPROC(ret_from_fork)
        mcount_exit
 
 1:     mcount_get_lr   r1                      @ lr of instrumented func
-       mov     r0, lr                          @ instrumented function
-       sub     r0, r0, #MCOUNT_INSN_SIZE
+       mcount_adjust_addr      r0, lr          @ instrumented function
        adr     lr, BSYM(2f)
        mov     pc, r2
 2:     mcount_exit
@@ -184,8 +194,7 @@ ENDPROC(ret_from_fork)
        mcount_enter
 
        mcount_get_lr   r1                      @ lr of instrumented func
-       mov     r0, lr                          @ instrumented function
-       sub     r0, r0, #MCOUNT_INSN_SIZE
+       mcount_adjust_addr      r0, lr          @ instrumented function
 
        .globl ftrace_call\suffix
 ftrace_call\suffix:
@@ -205,11 +214,11 @@ ftrace_graph_call\suffix:
 #ifdef CONFIG_DYNAMIC_FTRACE
        @ called from __ftrace_caller, saved in mcount_enter
        ldr     r1, [sp, #16]           @ instrumented routine (func)
+       mcount_adjust_addr      r1, r1
 #else
        @ called from __mcount, untouched in lr
-       mov     r1, lr                  @ instrumented routine (func)
+       mcount_adjust_addr      r1, lr  @ instrumented routine (func)
 #endif
-       sub     r1, r1, #MCOUNT_INSN_SIZE
        mov     r2, fp                  @ frame pointer
        bl      prepare_ftrace_return
        mcount_exit
@@ -443,7 +452,7 @@ ENTRY(vector_swi)
 1:
 #endif
 
-       tst     r10, #_TIF_SYSCALL_TRACE                @ are we tracing syscalls?
+       tst     r10, #_TIF_SYSCALL_WORK         @ are we tracing syscalls?
        bne     __sys_trace
 
        cmp     scno, #NR_syscalls              @ check upper syscall limit