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support sigaltstack

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This commit is contained in:
Tomoki Shirasawa
2014-06-25 13:45:33 +09:00
parent bbb7f77706
commit 770eae0186
5 changed files with 59 additions and 25 deletions
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10
kernel/process.c
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@ -148,6 +148,10 @@ struct process *create_process(unsigned long user_pc)
ihk_mc_spinlock_init(&proc->sigpendinglock);
INIT_LIST_HEAD(&proc->sigpending);
proc->sigstack.ss_sp = NULL;
proc->sigstack.ss_flags = SS_DISABLE;
proc->sigstack.ss_size = 0;
ihk_mc_init_user_process(&proc->ctx, &proc->uctx,
((char *)proc) +
KERNEL_STACK_NR_PAGES * PAGE_SIZE, user_pc, 0);
@ -218,7 +222,11 @@ struct process *clone_process(struct process *org, unsigned long pc,
if (clone_flags & CLONE_VM) {
ihk_atomic_inc(&org->vm->refcount);
proc->vm = org->vm;
proc->sigstack.ss_sp = NULL;
proc->sigstack.ss_flags = SS_DISABLE;
proc->sigstack.ss_size = 0;
proc->sighandler = org->sighandler;
ihk_atomic_inc(&org->sighandler->use);