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Enabled interrupts as soon as it possible in syscall(), before any 

of the diagnostic checks.
This commit is contained in:
mark 1998-08-16 02:01:16 +00:00
parent 961641ad2d
commit d83571ea08
1 changed files with 10 additions and 14 deletions
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24
sys/arch/arm32/arm32/syscall.c
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@ -1,4 +1,4 @@
/* $NetBSD: syscall.c,v 1.17 1998/07/07 17:51:55 mark Exp $ */
/* $NetBSD: syscall.c,v 1.18 1998/08/16 02:01:16 mark Exp $ */
/*
* Copyright (c) 1994,1995 Mark Brinicombe.
@ -126,6 +126,14 @@ syscall(frame, code)
u_quad_t sticks;
int regparams;
/*
* Enable interrupts if they were enabled before the exception.
* Since all syscalls *should* come from user mode it will always
* be safe to enable them, but check anyway.
*/
if (!(frame->tf_spsr & I32_bit))
enable_interrupts(I32_bit);
#if defined(UVM)
uvmexp.syscalls++;
#else
@ -143,15 +151,11 @@ syscall(frame, code)
#ifdef DIAGNOSTIC
if ((frame->tf_spsr & PSR_MODE) != PSR_USR32_MODE) {
u_int s;
s = splhigh();
printf("syscall: swi 0x%x from non USR32 mode\n", code);
printf("syscall: trapframe=0x%08x\n", (u_int)frame);
printf("syscall: trapframe=%p\n", frame);
#ifdef CONTINUE_AFTER_NONUSR_SYSCALL
printf("syscall: The system should now be considered very unstable :-(\n");
(void)splx(s);
sigexit(curproc, SIGILL);
/* Not reached */
@ -214,14 +218,6 @@ syscall(frame, code)
panic("syscall: Not in SVC32 mode\n");
#endif /* DIAGNOSTIC */
/*
* Enable interrupts if they were enabled before the exception.
* Since all syscalls *should* come from user mode it will always
* be safe to enable them, but check anyway.
*/
if (!(frame->tf_spsr & I32_bit))
enable_interrupts(I32_bit);
p = curproc;
sticks = p->p_sticks;
p->p_md.md_regs = frame;