nds32: standalone support

[oweals/u-boot.git] / examples / standalone / stubs.c

diff --git a/examples/standalone/stubs.c b/examples/standalone/stubs.c
index 507d38ceaf94b1d900f5c8e3e0b1ded5c47e907e..11c756525ae57ad813192a4f160ff7af39c1d7e5 100644 (file)
--- a/examples/standalone/stubs.c
+++ b/examples/standalone/stubs.c
@@ -167,8 +167,23 @@ gd_t *global_data;
 "      jmp %%g1\n"                                     \
 "      nop\n"                                          \
        : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "g1" );
-
+#elif defined(CONFIG_NDS32)
+/*
+ * r16 holds the pointer to the global_data. gp is call clobbered.
+ * not support reduced register (16 GPR).
+ */
+#define EXPORT_FUNC(x) \
+       asm volatile (                  \
+"      .globl " #x "\n"                \
+#x ":\n"                               \
+"      lwi     $r16, [$gp + (%0)]\n"   \
+"      lwi     $r16, [$r16 + (%1)]\n"  \
+"      jr      $r16\n"                 \
+       : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "$r16");
 #else
+/*"    addi    $sp, $sp, -24\n"        \
+"      br      $r16\n"                 \*/
+
 #error stubs definition missing for this architecture
 #endif