[ARM] start_thread fixup for nommu mode

This patch supports start_thread in nommu mode which requires the
base index register.

Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/asm-arm/processor.h b/include/asm-arm/processor.h
index 31290694648b..04f4d34c6317 100644
--- a/include/asm-arm/processor.h
+++ b/include/asm-arm/processor.h
@@ -49,6 +49,12 @@ struct thread_struct {
 
 #define INIT_THREAD  {  }
 
+#ifdef CONFIG_MMU
+#define nommu_start_thread(regs) do { } while (0)
+#else
+#define nommu_start_thread(regs) regs->ARM_r10 = current->mm->start_data
+#endif
+
 #define start_thread(regs,pc,sp)                                        \
 ({                                                                      \
         unsigned long *stack = (unsigned long *)sp;                     \
@@ -65,6 +71,7 @@ struct thread_struct {
         regs->ARM_r2 = stack[2];        /* r2 (envp) */                 \
         regs->ARM_r1 = stack[1];        /* r1 (argv) */                 \
         regs->ARM_r0 = stack[0];        /* r0 (argc) */                 \
+        nommu_start_thread(regs);                                       \
 })
 
 /* Forward declaration, a strange C thing */