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exec.c: fix setting 1-byte-long watchpoints 

With commit 05068c0dfb 'exec.c: Relax restrictions on watchpoint length
and alignment' it's no longer possible to set 1-byte-long watchpoint
because of incorrect address range check.
Fix that by changing condition that checks for address wraparound.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1411016616-29879-1-git-send-email-jcmvbkbc@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Max Filippov 2014-09-17 22:03:36 -07:00 committed by Peter Maydell
parent 4852ee95f3
commit 07e2863d02
1 changed files with 1 additions and 1 deletions
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exec.c
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@ -595,7 +595,7 @@ int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
CPUWatchpoint *wp;
/* forbid ranges which are empty or run off the end of the address space */
if (len == 0 || (addr + len - 1) <= addr) {
if (len == 0 || (addr + len - 1) < addr) {
error_report("tried to set invalid watchpoint at %"
VADDR_PRIx ", len=%" VADDR_PRIu, addr, len);
return -EINVAL;