diff options
| -rw-r--r-- | gcc/config/vxworks.h | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/gcc/config/vxworks.h b/gcc/config/vxworks.h index 075a451..e7e5ffe 100644 --- a/gcc/config/vxworks.h +++ b/gcc/config/vxworks.h @@ -224,14 +224,54 @@ extern void vxworks_driver_init (unsigned int *, struct cl_decoded_option **); #undef VXWORKS_LINK_SPEC #define VXWORKS_LINK_SPEC VXWORKS_BASE_LINK_SPEC " " VXWORKS_EXTRA_LINK_SPEC +/* Control how to include libgcc in the link closure, handling both "shared" + and "non-static" in addition to "static-libgcc" when shared lib support is + enabled. */ + #undef VXWORKS_LIBGCC_SPEC + +/* libgcc_eh control; libgcc_eh.a is available either together with libgcc_s + (mrtp and mcmodel!=large when configured with --enable-shared) or when the + compiler is specially setup to support dual sjlj/table-based eh. */ + +/* VX_LGCC_EH_SO1: The "-lgcc_eh" part we need in situations where we know a + shared libgcc is available (ENABLE_SHARED_LIBGCC + mrtp multilib). */ + +#define VX_LGCC_EH_SO1 " -lgcc_eh -lgcc" +/* Extra -lgcc to handle functions from libgcc_eh that refer to symbols + exposed by libgcc and not guaranteed to be dragged in before -lgcc_eh + appears. */ + +/* VX_LGCC_EH_SO0: The "-lgcc_eh" part we need in situations where we know a + shared libgcc is not available (!ENABLE_SHARED_LIBGCC or !mrtp multlib). */ + +#if !defined(CONFIG_DUAL_EXCEPTIONS) + +/* No shared lib && !DUAL_EH -> no libgcc_eh available at all. */ +#define VX_LGCC_EH_SO0 + +#else /* CONFIG_DUAL_EXCEPTIONS */ + +/* No shared lib but DUAL_EH -> libgcc_eh around and spec handled by the driver + depending on ENABLE_SHARED_LIBGCC. If defined, the driver expects a regular + sequence. Otherwise, the driver is expected to turn -lgcc into -lgcc_eh on + its own and just add an instance to address possible cross refs. */ + +#if defined(ENABLE_SHARED_LIBGCC) +#define VX_LGCC_EH_SO0 " -lgcc_eh -lgcc" +#else +#define VX_LGCC_EH_SO0 " -lgcc" +#endif + +#endif /* CONFIG_DUAL_EXCEPTIONS */ + #if defined(ENABLE_SHARED_LIBGCC) #define VXWORKS_LIBGCC_SPEC \ -"%{!mrtp:-lgcc -lgcc_eh} \ - %{mrtp:%{!static-libgcc:%{shared|non-static:-lgcc_s;:-lgcc -lgcc_eh}} \ - %{static-libgcc:-lgcc -lgcc_eh}}" + "%{!mrtp|mcmodel=large:-lgcc" VX_LGCC_EH_SO0 ";" \ + " :%{!static-libgcc:%{shared|non-static:-lgcc_s;:-lgcc" VX_LGCC_EH_SO1 "}} \ + %{static-libgcc:-lgcc" VX_LGCC_EH_SO1 "}}" #else -#define VXWORKS_LIBGCC_SPEC "-lgcc" +#define VXWORKS_LIBGCC_SPEC "-lgcc" VX_LGCC_EH_SO0 #endif /* Setup the crtstuff begin/end we might need for dwarf EH registration |