diff options
Diffstat (limited to 'libgo/configure.ac')
| -rw-r--r-- | libgo/configure.ac | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libgo/configure.ac b/libgo/configure.ac index 249918b..479ced0e 100644 --- a/libgo/configure.ac +++ b/libgo/configure.ac @@ -611,6 +611,21 @@ if test "$libgo_has_struct_exception" = "yes"; then [Define to 1 if <math.h> defines struct exception]) fi +dnl Check if makecontext expects the uc_stack member of ucontext to point +dnl to the top of the stack. +case "$target" in + sparc*-*-solaris2.[[89]]*) + libgo_cv_lib_makecontext_stack_top=yes + ;; + *) + libgo_cv_lib_makecontext_stack_top=no + ;; +esac +if test "$libgo_cv_lib_makecontext_stack_top" = "yes"; then + AC_DEFINE(MAKECONTEXT_STACK_TOP, 1, + [Define if makecontext expects top of stack in uc_stack.]) +fi + dnl See whether setcontext changes the value of TLS variables. AC_CACHE_CHECK([whether setcontext clobbers TLS variables], [libgo_cv_lib_setcontext_clobbers_tls], @@ -667,6 +682,9 @@ main () abort (); c.uc_stack.ss_sp = stack; +#ifdef MAKECONTEXT_STACK_TOP + c.uc_stack.ss_sp += sizeof stack; +#endif c.uc_stack.ss_flags = 0; c.uc_stack.ss_size = sizeof stack; c.uc_link = NULL; |