[U-Boot] [PATCH v2 6/9] openrisc: Add support for standalone programs

Stefan Kristiansson
2011-11-27T05:04:54Z

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
---

Changes in v2:
- None

examples/standalone/stubs.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/examples/standalone/stubs.c b/examples/standalone/stubs.c
index 11c7565..8b291db 100644
--- a/examples/standalone/stubs.c
+++ b/examples/standalone/stubs.c
@@ -180,6 +180,20 @@ gd_t *global_data;
" lwi $r16, [$r16 + (%1)]\n" \
" jr $r16\n" \
: : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "$r16");
+#elif defined(CONFIG_OPENRISC)
+/*
+ * r10 holds the pointer to the global_data, r13 is a call-clobbered
+ * register
+ */
+#define EXPORT_FUNC(x) \
+ asm volatile ( \
+" .globl " #x "\n" \
+#x ":\n" \
+" l.lwz r13, %0(r10)\n" \
+" l.lwz r13, %1(r13)\n" \
+" l.jr r13\n" \
+" l.nop\n" \
+ : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "r13");
#else
/*" addi $sp, $sp, -24\n" \
" br $r16\n" \*/
--
1.7.5.4