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signal: interrupt_syscall is called by the core executing the thread that recieved the signal.

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refs #999
This commit is contained in:
Tomoki Shirasawa
2018-01-23 14:31:04 +09:00
parent 1e9f9d9809
commit 2f2b3cdc6f
3 changed files with 85 additions and 24 deletions
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37
arch/x86_64/kernel/cpu.c
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@ -849,6 +849,7 @@ void setup_x86_ap(void (*next_func)(void))
void arch_show_interrupt_context(const void *reg);
void set_signal(int sig, void *regs, struct siginfo *info);
void check_signal(unsigned long, void *, int);
void check_sig_pending();
extern void tlb_flush_handler(int vector);
void __show_stack(uintptr_t *sp) {
@ -870,6 +871,18 @@ void show_context_stack(uintptr_t *rbp) {
return;
}
void interrupt_exit(struct x86_user_context *regs)
{
if (interrupt_from_user(regs)) {
cpu_enable_interrupt();
check_signal(0, regs, 0);
check_need_resched();
}
else {
check_sig_pending();
}
}
void handle_interrupt(int vector, struct x86_user_context *regs)
{
struct ihk_mc_interrupt_handler *h;
@ -992,11 +1005,7 @@ void handle_interrupt(int vector, struct x86_user_context *regs)
}
}
if(interrupt_from_user(regs)){
cpu_enable_interrupt();
check_signal(0, regs, 0);
check_need_resched();
}
interrupt_exit(regs);
set_cputime(0);
--v->in_interrupt;
@ -1012,11 +1021,7 @@ void gpe_handler(struct x86_user_context *regs)
panic("gpe_handler");
}
set_signal(SIGSEGV, regs, NULL);
if(interrupt_from_user(regs)){
cpu_enable_interrupt();
check_signal(0, regs, 0);
check_need_resched();
}
interrupt_exit(regs);
set_cputime(0);
panic("GPF");
}
@ -1045,11 +1050,7 @@ void debug_handler(struct x86_user_context *regs)
memset(&info, '\0', sizeof info);
info.si_code = si_code;
set_signal(SIGTRAP, regs, &info);
if(interrupt_from_user(regs)){
cpu_enable_interrupt();
check_signal(0, regs, 0);
check_need_resched();
}
interrupt_exit(regs);
set_cputime(0);
}
@ -1067,11 +1068,7 @@ void int3_handler(struct x86_user_context *regs)
memset(&info, '\0', sizeof info);
info.si_code = TRAP_BRKPT;
set_signal(SIGTRAP, regs, &info);
if(interrupt_from_user(regs)){
cpu_enable_interrupt();
check_signal(0, regs, 0);
check_need_resched();
}
interrupt_exit(regs);
set_cputime(0);
}