Signed-off-by: Stanislav Galabov sgalabov@gmail.com --- examples/standalone/stubs.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/examples/standalone/stubs.c b/examples/standalone/stubs.c index 920a0a9..0d62067 100644 --- a/examples/standalone/stubs.c +++ b/examples/standalone/stubs.c @@ -65,6 +65,23 @@ gd_t *global_data; : : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "ip"); #endif #elif defined(CONFIG_MIPS) +#ifdef CONFIG_CPU_MIPS64 +/* + * k0 ($26) holds the pointer to the global_data; t9 ($25) is a call- + * clobbered register that is also used to set gp ($26). Note that the + * jr instruction also executes the instruction immediately following + * it; however, GCC/mips generates an additional `nop' after each asm + * statement + */ +#define EXPORT_FUNC(f, a, x, ...) \ + asm volatile ( \ +" .globl " #x "\n" \ +#x ":\n" \ +" ld $25, %0($26)\n" \ +" ld $25, %1($25)\n" \ +" jr $25\n" \ + : : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9"); +#else /* * k0 ($26) holds the pointer to the global_data; t9 ($25) is a call- * clobbered register that is also used to set gp ($26). Note that the @@ -80,6 +97,7 @@ gd_t *global_data; " lw $25, %1($25)\n" \ " jr $25\n" \ : : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9"); +#endif #elif defined(CONFIG_NIOS2) /* * gp holds the pointer to the global_data, r8 is call-clobbered