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exec: fix breakpoint_invalidate when pc may not be translated 

This fixes qemu abort with the following message:

    include/qemu/int128.h:22: int128_get64: Assertion `!a.hi' failed.

which happens due to attempt to invalidate breakpoint by virtual address
for which get_phys_page_debug couldn't find mapping.

For more details see
http://lists.nongnu.org/archive/html/qemu-devel/2013-09/msg04582.html

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit e8262a1b5b)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Max Filippov 2013-09-27 22:29:17 +04:00 committed by Michael Roth
parent 5326636ff2
commit 2c8187434f
1 changed files with 4 additions and 2 deletions
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6
exec.c
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@ -425,8 +425,10 @@ static void breakpoint_invalidate(CPUState *cpu, target_ulong pc)
#else
static void breakpoint_invalidate(CPUState *cpu, target_ulong pc)
{
tb_invalidate_phys_addr(cpu_get_phys_page_debug(cpu, pc) |
(pc & ~TARGET_PAGE_MASK));
hwaddr phys = cpu_get_phys_page_debug(cpu, pc);
if (phys != -1) {
tb_invalidate_phys_addr(phys | (pc & ~TARGET_PAGE_MASK));
}
}
#endif
#endif /* TARGET_HAS_ICE */