From 0ae7653128c80a4f2920cbe9b124792c2fd9d9e0 Mon Sep 17 00:00:00 2001 From: David Feng Date: Sat, 14 Dec 2013 11:47:35 +0800 Subject: arm64: core support Relocation code based on a patch by Scott Wood, which is: Signed-off-by: Scott Wood Signed-off-by: David Feng --- examples/standalone/stubs.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'examples/standalone') diff --git a/examples/standalone/stubs.c b/examples/standalone/stubs.c index 5d2ab56995..32a19ce354 100644 --- a/examples/standalone/stubs.c +++ b/examples/standalone/stubs.c @@ -39,6 +39,20 @@ gd_t *global_data; " bctr\n" \ : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "r11"); #elif defined(CONFIG_ARM) +#ifdef CONFIG_ARM64 +/* + * x18 holds the pointer to the global_data, x9 is a call-clobbered + * register + */ +#define EXPORT_FUNC(x) \ + asm volatile ( \ +" .globl " #x "\n" \ +#x ":\n" \ +" ldr x9, [x18, %0]\n" \ +" ldr x9, [x9, %1]\n" \ +" br x9\n" \ + : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "x9"); +#else /* * r9 holds the pointer to the global_data, ip is a call-clobbered * register @@ -50,6 +64,7 @@ gd_t *global_data; " ldr ip, [r9, %0]\n" \ " ldr pc, [ip, %1]\n" \ : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "ip"); +#endif #elif defined(CONFIG_MIPS) /* * k0 ($26) holds the pointer to the global_data; t9 ($25) is a call- -- cgit v1.2.1