Commit 75918a4b authored by Olof Johansson's avatar Olof Johansson Committed by Paul Mackerras

[POWERPC] Separate out legacy machine check exception parsers

Move out the old-style exception parsers to a separate function, and
don't call it on platforms that have a platform-specific handler.

It would make sense to move out the generic versions into their platforms
instead, but that can be done gradually down the road.
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 6f668280
...@@ -324,38 +324,10 @@ static inline int check_io_access(struct pt_regs *regs) ...@@ -324,38 +324,10 @@ static inline int check_io_access(struct pt_regs *regs)
#define clear_single_step(regs) ((regs)->msr &= ~MSR_SE) #define clear_single_step(regs) ((regs)->msr &= ~MSR_SE)
#endif #endif
void machine_check_exception(struct pt_regs *regs) static int generic_machine_check_exception(struct pt_regs *regs)
{ {
int recover = 0;
unsigned long reason = get_mc_reason(regs); unsigned long reason = get_mc_reason(regs);
/* See if any machine dependent calls */
if (ppc_md.machine_check_exception)
recover = ppc_md.machine_check_exception(regs);
if (recover)
return;
if (user_mode(regs)) {
regs->msr |= MSR_RI;
_exception(SIGBUS, regs, BUS_ADRERR, regs->nip);
return;
}
#if defined(CONFIG_8xx) && defined(CONFIG_PCI)
/* the qspan pci read routines can cause machine checks -- Cort */
bad_page_fault(regs, regs->dar, SIGBUS);
return;
#endif
if (debugger_fault_handler(regs)) {
regs->msr |= MSR_RI;
return;
}
if (check_io_access(regs))
return;
#if defined(CONFIG_4xx) && !defined(CONFIG_440A) #if defined(CONFIG_4xx) && !defined(CONFIG_440A)
if (reason & ESR_IMCP) { if (reason & ESR_IMCP) {
printk("Instruction"); printk("Instruction");
...@@ -471,6 +443,42 @@ void machine_check_exception(struct pt_regs *regs) ...@@ -471,6 +443,42 @@ void machine_check_exception(struct pt_regs *regs)
} }
#endif /* CONFIG_4xx */ #endif /* CONFIG_4xx */
return 0;
}
void machine_check_exception(struct pt_regs *regs)
{
int recover = 0;
/* See if any machine dependent calls */
if (ppc_md.machine_check_exception)
recover = ppc_md.machine_check_exception(regs);
else
recover = generic_machine_check_exception(regs);
if (recover)
return;
if (user_mode(regs)) {
regs->msr |= MSR_RI;
_exception(SIGBUS, regs, BUS_ADRERR, regs->nip);
return;
}
#if defined(CONFIG_8xx) && defined(CONFIG_PCI)
/* the qspan pci read routines can cause machine checks -- Cort */
bad_page_fault(regs, regs->dar, SIGBUS);
return;
#endif
if (debugger_fault_handler(regs)) {
regs->msr |= MSR_RI;
return;
}
if (check_io_access(regs))
return;
if (debugger_fault_handler(regs)) if (debugger_fault_handler(regs))
return; return;
die("Machine check", regs, SIGBUS); die("Machine check", regs, SIGBUS);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment