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S/390: Fix uc_link == NULL handling for makecontext

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This commit is contained in:
Andreas Krebbel
2012-07-19 15:58:17 +02:00
parent 08f43f9bbf
commit 46f85fc226
7 changed files with 104 additions and 20 deletions
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12
sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c
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@@ -80,10 +80,10 @@ __makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
sp -= 24;
*sp = 0;
/* Pass (*func) to __start_context in %r7. */
/* Pass (*func) to __makecontext_ret in %r7. */
ucp->uc_mcontext.gregs[7] = (long int) func;
/* Pass ucp->uc_link to __start_context in %r8. */
/* Pass ucp->uc_link to __makecontext_ret in %r8. */
ucp->uc_mcontext.gregs[8] = (long int) ucp->uc_link;
/* Pass address of setcontext in %r9. */
@@ -93,12 +93,4 @@ __makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
ucp->uc_mcontext.gregs[15] = (long int) sp;
}
asm (".text\n"
".type __makecontext_ret,@function\n"
"__makecontext_ret:\n"
" basr %r14,%r7\n"
" lr %r2,%r8\n"
" br %r9\n"
".size __makecontext_ret, .-__makecontext_ret");
weak_alias (__makecontext, makecontext)