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target-i386: Introduce hw_{local,global}_breakpoint_enabled()

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hw_breakpoint_enabled() returned a bit field indicating whether a local
breakpoint and/or global breakpoint was enabled. Avoid this number magic
by using explicit boolean helper functions hw_local_breakpoint_enabled()
and hw_global_breakpoint_enabled(), to aid readability.

Reuse them for the hw_breakpoint_enabled() implementation and change
its return type to bool.

While at it, fix Coding Style issues (missing braces).

Signed-off-by: liguang <lig.fnst@cn.fujitsu.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
liguang 2013-01-15 08:01:07 +01:00 • committed by Andreas Färber
parent 428065ce50
commit 5902564ac9
3 changed files with 21 additions and 6 deletions
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3
target-i386/seg_helper.c
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@ -467,7 +467,8 @@ static void switch_tss(CPUX86State *env, int tss_selector,
/* reset local breakpoints */
if (env->dr[7] & DR7_LOCAL_BP_MASK) {
for (i = 0; i < DR7_MAX_BP; i++) {
if (hw_breakpoint_enabled(env->dr[7], i) == 0x1) {
if (hw_local_breakpoint_enabled(env->dr[7], i) &&
!hw_global_breakpoint_enabled(env->dr[7], i)) {
hw_breakpoint_remove(env, i);
}
}