diff options
Diffstat (limited to 'gcc/gcc.c')
| -rw-r--r-- | gcc/gcc.c | 13 |
1 files changed, 12 insertions, 1 deletions
@@ -545,6 +545,16 @@ proper position among the other output files. */ #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}" #endif +/* When using -fsplit-stack we need to wrap pthread_create, in order + to initialize the stack guard. We always use wrapping, rather than + shared library ordering, and we keep the wrapper function in + libgcc. This is not yet a real spec, though it could become one; + it is currently just stuffed into LINK_SPEC. FIXME: This wrapping + only works with GNU ld and gold. FIXME: This is incompatible with + -fmudflap when linking statically, which wants to do its own + wrapping. */ +#define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" + /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is included. */ #ifndef LIBGCC_SPEC @@ -657,7 +667,8 @@ proper position among the other output files. */ "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\ %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\ %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\ - %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)} %(mflib)\ + %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\ + %(mflib) " STACK_SPLIT_SPEC "\ %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\ %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}" |