git
/
gcc
mirror of git://gcc.gnu.org/git/gcc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

runtime: provide initcontext and fixcontext for NetBSD 

From-SVN: r193173
This commit is contained in:
Ian Lance Taylor 2012-11-05 17:41:07 +00:00
parent ae0b23e2ff
commit 0be1a5898f
1 changed files with 23 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
libgo/runtime/proc.c
View File

@ -110,6 +110,28 @@ fixcontext(ucontext_t* c)
c->uc_mcontext.gregs[REG_FSBASE] = fs; c->uc_mcontext.gregs[REG_FSBASE] = fs;
} }
# elif defined(__NetBSD__)
// NetBSD has a bug: setcontext clobbers tlsbase, we need to save
// and restore it ourselves.
static __thread __greg_t tlsbase;
static inline void
initcontext(void)
{
ucontext_t c;
getcontext(&c);
tlsbase = c.uc_mcontext._mc_tlsbase;
}
static inline void
fixcontext(ucontext_t* c)
{
c->uc_mcontext._mc_tlsbase = tlsbase;
}
# else # else
# error unknown case for SETCONTEXT_CLOBBERS_TLS # error unknown case for SETCONTEXT_CLOBBERS_TLS