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exec.c: Relax restrictions on watchpoint length and alignment

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The current implementation of watchpoints requires that they
have a power of 2 length which is not greater than TARGET_PAGE_SIZE
and that their address is a multiple of their length. Watchpoints
on ARM don't fit these restrictions, so change the implementation
so they can be relaxed.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Peter Maydell 2014-09-12 14:06:48 +01:00
parent acf82361c6
commit 05068c0dfb
3 changed files with 33 additions and 16 deletions
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3
linux-user/main.c
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@ -3458,8 +3458,7 @@ CPUArchState *cpu_copy(CPUArchState *env)
cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL);
}
QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
cpu_watchpoint_insert(new_cpu, wp->vaddr, (~wp->len_mask) + 1,
wp->flags, NULL);
cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL);
}
#endif