Merge remote-tracking branch 'lsk/v3.10/topic/gator' into linux-linaro-lsk

[firefly-linux-kernel-4.4.55.git] / arch / xtensa / include / asm / traps.h

diff --git a/arch/xtensa/include/asm/traps.h b/arch/xtensa/include/asm/traps.h
index 917488a0ab00f12b9c49ac7e13b72ea5ea28eecb..f2faa58f9a43f3a591b41f9bf7f62b72bc8e6218 100644 (file)
--- a/arch/xtensa/include/asm/traps.h
+++ b/arch/xtensa/include/asm/traps.h
@@ -22,25 +22,37 @@ extern void do_unhandled(struct pt_regs *regs, unsigned long exccause);
 
 static inline void spill_registers(void)
 {
-
+#if XCHAL_NUM_AREGS > 16
        __asm__ __volatile__ (
-               "movi   a14, "__stringify((1 << PS_EXCM_BIT) | LOCKLEVEL)"\n\t"
-               "mov    a12, a0\n\t"
-               "rsr    a13, sar\n\t"
-               "xsr    a14, ps\n\t"
-               "movi   a0, _spill_registers\n\t"
-               "rsync\n\t"
-               "callx0 a0\n\t"
-               "mov    a0, a12\n\t"
-               "wsr    a13, sar\n\t"
-               "wsr    a14, ps\n\t"
-               : :
-#if defined(CONFIG_FRAME_POINTER)
-               : "a2", "a3", "a4",       "a11", "a12", "a13", "a14", "a15",
+               "       call12  1f\n"
+               "       _j      2f\n"
+               "       retw\n"
+               "       .align  4\n"
+               "1:\n"
+               "       _entry  a1, 48\n"
+               "       addi    a12, a0, 3\n"
+#if XCHAL_NUM_AREGS > 32
+               "       .rept   (" __stringify(XCHAL_NUM_AREGS) " - 32) / 12\n"
+               "       _entry  a1, 48\n"
+               "       mov     a12, a0\n"
+               "       .endr\n"
+#endif
+               "       _entry  a1, 48\n"
+#if XCHAL_NUM_AREGS % 12 == 0
+               "       mov     a8, a8\n"
+#elif XCHAL_NUM_AREGS % 12 == 4
+               "       mov     a12, a12\n"
+#elif XCHAL_NUM_AREGS % 12 == 8
+               "       mov     a4, a4\n"
+#endif
+               "       retw\n"
+               "2:\n"
+               : : : "a12", "a13", "memory");
 #else
-               : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15",
+       __asm__ __volatile__ (
+               "       mov     a12, a12\n"
+               : : : "memory");
 #endif
-                 "memory");
 }
 
 #endif /* _XTENSA_TRAPS_H */