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target-i386: Introduce cpu_x86_update_dr7

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This moves the last of the iteration over breakpoints into
the bpt_helper.c file.  This also allows us to make several
breakpoint functions static.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Richard Henderson 2015-09-15 11:45:08 -07:00 • committed by Eduardo Habkost
parent e265e3e480
commit 93d00d0fbe
4 changed files with 27 additions and 22 deletions
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29
target-i386/bpt_helper.c
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@ -21,7 +21,8 @@
#include "exec/helper-proto.h"
void hw_breakpoint_insert(CPUX86State *env, int index)
#ifndef CONFIG_USER_ONLY
static void hw_breakpoint_insert(CPUX86State *env, int index)
{
CPUState *cs = CPU(x86_env_get_cpu(env));
int type = 0, err = 0;
@ -55,7 +56,7 @@ void hw_breakpoint_insert(CPUX86State *env, int index)
}
}
void hw_breakpoint_remove(CPUX86State *env, int index)
static void hw_breakpoint_remove(CPUX86State *env, int index)
{
CPUState *cs;
@ -79,6 +80,20 @@ void hw_breakpoint_remove(CPUX86State *env, int index)
}
}
void cpu_x86_update_dr7(CPUX86State *env, uint32_t new_dr7)
{
int i;
for (i = 0; i < DR7_MAX_BP; i++) {
hw_breakpoint_remove(env, i);
}
env->dr[7] = new_dr7;
for (i = 0; i < DR7_MAX_BP; i++) {
hw_breakpoint_insert(env, i);
}
}
#endif
static bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update)
{
target_ulong dr6;
@ -161,20 +176,12 @@ void helper_single_step(CPUX86State *env)
void helper_movl_drN_T0(CPUX86State *env, int reg, target_ulong t0)
{
#ifndef CONFIG_USER_ONLY
int i;
if (reg < 4) {
hw_breakpoint_remove(env, reg);
env->dr[reg] = t0;
hw_breakpoint_insert(env, reg);
} else if (reg == 7) {
for (i = 0; i < DR7_MAX_BP; i++) {
hw_breakpoint_remove(env, i);
}
env->dr[7] = t0;
for (i = 0; i < DR7_MAX_BP; i++) {
hw_breakpoint_insert(env, i);
}
cpu_x86_update_dr7(env, t0);
} else {
env->dr[reg] = t0;
}