1 files changed, 54 insertions, 0 deletions

diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h
index 309f4e6721b3..225e7df2d8ed 100644
--- a/arch/arc/include/asm/entry-arcv2.h
+++ b/arch/arc/include/asm/entry-arcv2.h
@@ -17,6 +17,33 @@
         ;
         ; Now manually save: r12, sp, fp, gp, r25
 
+#ifdef CONFIG_ARC_IRQ_NO_AUTOSAVE
+.ifnc \called_from, exception
+        st.as   r9, [sp, -10]   ; save r9 in it's final stack slot
+        sub     sp, sp, 12      ; skip JLI, LDI, EI
+
+        PUSH    lp_count
+        PUSHAX  lp_start
+        PUSHAX  lp_end
+        PUSH    blink
+
+        PUSH    r11
+        PUSH    r10
+
+        sub     sp, sp, 4       ; skip r9
+
+        PUSH    r8
+        PUSH    r7
+        PUSH    r6
+        PUSH    r5
+        PUSH    r4
+        PUSH    r3
+        PUSH    r2
+        PUSH    r1
+        PUSH    r0
+.endif
+#endif
+
 #ifdef CONFIG_ARC_HAS_ACCL_REGS
         PUSH    r59
         PUSH    r58
@@ -86,6 +113,33 @@
         POP     r59
 #endif
 
+#ifdef CONFIG_ARC_IRQ_NO_AUTOSAVE
+.ifnc \called_from, exception
+        POP     r0
+        POP     r1
+        POP     r2
+        POP     r3
+        POP     r4
+        POP     r5
+        POP     r6
+        POP     r7
+        POP     r8
+        POP     r9
+        POP     r10
+        POP     r11
+
+        POP     blink
+        POPAX   lp_end
+        POPAX   lp_start
+
+        POP     r9
+        mov     lp_count, r9
+
+        add     sp, sp, 12      ; skip JLI, LDI, EI
+        ld.as   r9, [sp, -10]   ; reload r9 which got clobbered
+.endif
+#endif
+
 .endm
 
 /*------------------------------------------------------------------------*/