diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/Makefile | 10 | ||||
| -rw-r--r-- | examples/stubs.c | 16 |
2 files changed, 21 insertions, 5 deletions
diff --git a/examples/Makefile b/examples/Makefile index 945b745..6bd10b5 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -41,6 +41,10 @@ ifeq ($(ARCH),nios) LOAD_ADDR = 0x01000000 -L $(gcclibdir)/m32 -T nios.lds endif +ifeq ($(ARCH),m68k) +LOAD_ADDR = 0x20000 -L $(clibdir) +endif + include $(TOPDIR)/config.mk SREC = hello_world.srec @@ -56,11 +60,6 @@ SREC += sched.srec BIN += sched.bin sched endif -ifeq ($(ARCH),m68k) -SREC = -BIN = -endif - # The following example is pretty 8xx specific... ifeq ($(CPU),mpc8xx) SREC += timer.srec @@ -94,6 +93,7 @@ LIBCOBJS= stubs.o LIBOBJS = $(LIBAOBJS) $(LIBCOBJS) gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`) +clibdir := $(shell dirname `$(CC) $(CFLAGS) -print-file-name=libc.a`) CPPFLAGS += -I.. diff --git a/examples/stubs.c b/examples/stubs.c index 6ca6d78..a26337a 100644 --- a/examples/stubs.c +++ b/examples/stubs.c @@ -78,6 +78,22 @@ gd_t *global_data; " jmp %%g0\n" \ " nop \n" \ : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x) : "r0"); +#elif defined(CONFIG_M68K) +/* + * d7 holds the pointer to the global_data, a0 is a call-clobbered + * register + */ +#define EXPORT_FUNC(x) \ + asm volatile ( \ +" .globl " #x "\n" \ +#x ":\n" \ +" move.l %%d7, %%a0\n" \ +" adda.l %0, %%a0\n" \ +" move.l (%%a0), %%a0\n" \ +" adda.l %1, %%a0\n" \ +" move.l (%%a0), %%a0\n" \ +" jmp (%%a0)\n" \ + : : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "a0"); #else #error stubs definition missing for this architecture #endif |