target-i386: Move breakpoint related functions to new file

Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
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 11:45:06 -07:00 committed by Eduardo Habkost
parent 5114e84222
commit ba4b5c65a9
4 changed files with 183 additions and 163 deletions

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@ -1,4 +1,4 @@
obj-y += translate.o helper.o cpu.o
obj-y += translate.o helper.o cpu.o bpt_helper.o
obj-y += excp_helper.o fpu_helper.o cc_helper.o int_helper.o svm_helper.o
obj-y += smm_helper.o misc_helper.o mem_helper.o seg_helper.o
obj-y += gdbstub.o

182
target-i386/bpt_helper.c Normal file
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@ -0,0 +1,182 @@
/*
* i386 breakpoint helpers
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu.h"
#include "exec/helper-proto.h"
void hw_breakpoint_insert(CPUX86State *env, int index)
{
CPUState *cs = CPU(x86_env_get_cpu(env));
int type = 0, err = 0;
switch (hw_breakpoint_type(env->dr[7], index)) {
case DR7_TYPE_BP_INST:
if (hw_breakpoint_enabled(env->dr[7], index)) {
err = cpu_breakpoint_insert(cs, env->dr[index], BP_CPU,
&env->cpu_breakpoint[index]);
}
break;
case DR7_TYPE_DATA_WR:
type = BP_CPU | BP_MEM_WRITE;
break;
case DR7_TYPE_IO_RW:
/* No support for I/O watchpoints yet */
break;
case DR7_TYPE_DATA_RW:
type = BP_CPU | BP_MEM_ACCESS;
break;
}
if (type != 0) {
err = cpu_watchpoint_insert(cs, env->dr[index],
hw_breakpoint_len(env->dr[7], index),
type, &env->cpu_watchpoint[index]);
}
if (err) {
env->cpu_breakpoint[index] = NULL;
}
}
void hw_breakpoint_remove(CPUX86State *env, int index)
{
CPUState *cs;
if (!env->cpu_breakpoint[index]) {
return;
}
cs = CPU(x86_env_get_cpu(env));
switch (hw_breakpoint_type(env->dr[7], index)) {
case DR7_TYPE_BP_INST:
if (hw_breakpoint_enabled(env->dr[7], index)) {
cpu_breakpoint_remove_by_ref(cs, env->cpu_breakpoint[index]);
}
break;
case DR7_TYPE_DATA_WR:
case DR7_TYPE_DATA_RW:
cpu_watchpoint_remove_by_ref(cs, env->cpu_watchpoint[index]);
break;
case DR7_TYPE_IO_RW:
/* No support for I/O watchpoints yet */
break;
}
}
bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update)
{
target_ulong dr6;
int reg;
bool hit_enabled = false;
dr6 = env->dr[6] & ~0xf;
for (reg = 0; reg < DR7_MAX_BP; reg++) {
bool bp_match = false;
bool wp_match = false;
switch (hw_breakpoint_type(env->dr[7], reg)) {
case DR7_TYPE_BP_INST:
if (env->dr[reg] == env->eip) {
bp_match = true;
}
break;
case DR7_TYPE_DATA_WR:
case DR7_TYPE_DATA_RW:
if (env->cpu_watchpoint[reg] &&
env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT) {
wp_match = true;
}
break;
case DR7_TYPE_IO_RW:
break;
}
if (bp_match || wp_match) {
dr6 |= 1 << reg;
if (hw_breakpoint_enabled(env->dr[7], reg)) {
hit_enabled = true;
}
}
}
if (hit_enabled || force_dr6_update) {
env->dr[6] = dr6;
}
return hit_enabled;
}
void breakpoint_handler(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
CPUBreakpoint *bp;
if (cs->watchpoint_hit) {
if (cs->watchpoint_hit->flags & BP_CPU) {
cs->watchpoint_hit = NULL;
if (check_hw_breakpoints(env, false)) {
raise_exception(env, EXCP01_DB);
} else {
cpu_resume_from_signal(cs, NULL);
}
}
} else {
QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
if (bp->pc == env->eip) {
if (bp->flags & BP_CPU) {
check_hw_breakpoints(env, true);
raise_exception(env, EXCP01_DB);
}
break;
}
}
}
}
void helper_single_step(CPUX86State *env)
{
#ifndef CONFIG_USER_ONLY
check_hw_breakpoints(env, true);
env->dr[6] |= DR6_BS;
#endif
raise_exception(env, EXCP01_DB);
}
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);
}
} else {
env->dr[reg] = t0;
}
#endif
}

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@ -1096,134 +1096,6 @@ out:
return pte | page_offset;
}
void hw_breakpoint_insert(CPUX86State *env, int index)
{
CPUState *cs = CPU(x86_env_get_cpu(env));
int type = 0, err = 0;
switch (hw_breakpoint_type(env->dr[7], index)) {
case DR7_TYPE_BP_INST:
if (hw_breakpoint_enabled(env->dr[7], index)) {
err = cpu_breakpoint_insert(cs, env->dr[index], BP_CPU,
&env->cpu_breakpoint[index]);
}
break;
case DR7_TYPE_DATA_WR:
type = BP_CPU | BP_MEM_WRITE;
break;
case DR7_TYPE_IO_RW:
/* No support for I/O watchpoints yet */
break;
case DR7_TYPE_DATA_RW:
type = BP_CPU | BP_MEM_ACCESS;
break;
}
if (type != 0) {
err = cpu_watchpoint_insert(cs, env->dr[index],
hw_breakpoint_len(env->dr[7], index),
type, &env->cpu_watchpoint[index]);
}
if (err) {
env->cpu_breakpoint[index] = NULL;
}
}
void hw_breakpoint_remove(CPUX86State *env, int index)
{
CPUState *cs;
if (!env->cpu_breakpoint[index]) {
return;
}
cs = CPU(x86_env_get_cpu(env));
switch (hw_breakpoint_type(env->dr[7], index)) {
case DR7_TYPE_BP_INST:
if (hw_breakpoint_enabled(env->dr[7], index)) {
cpu_breakpoint_remove_by_ref(cs, env->cpu_breakpoint[index]);
}
break;
case DR7_TYPE_DATA_WR:
case DR7_TYPE_DATA_RW:
cpu_watchpoint_remove_by_ref(cs, env->cpu_watchpoint[index]);
break;
case DR7_TYPE_IO_RW:
/* No support for I/O watchpoints yet */
break;
}
}
bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update)
{
target_ulong dr6;
int reg;
bool hit_enabled = false;
dr6 = env->dr[6] & ~0xf;
for (reg = 0; reg < DR7_MAX_BP; reg++) {
bool bp_match = false;
bool wp_match = false;
switch (hw_breakpoint_type(env->dr[7], reg)) {
case DR7_TYPE_BP_INST:
if (env->dr[reg] == env->eip) {
bp_match = true;
}
break;
case DR7_TYPE_DATA_WR:
case DR7_TYPE_DATA_RW:
if (env->cpu_watchpoint[reg] &&
env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT) {
wp_match = true;
}
break;
case DR7_TYPE_IO_RW:
break;
}
if (bp_match || wp_match) {
dr6 |= 1 << reg;
if (hw_breakpoint_enabled(env->dr[7], reg)) {
hit_enabled = true;
}
}
}
if (hit_enabled || force_dr6_update) {
env->dr[6] = dr6;
}
return hit_enabled;
}
void breakpoint_handler(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
CPUBreakpoint *bp;
if (cs->watchpoint_hit) {
if (cs->watchpoint_hit->flags & BP_CPU) {
cs->watchpoint_hit = NULL;
if (check_hw_breakpoints(env, false)) {
raise_exception(env, EXCP01_DB);
} else {
cpu_resume_from_signal(cs, NULL);
}
}
} else {
QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
if (bp->pc == env->eip) {
if (bp->flags & BP_CPU) {
check_hw_breakpoints(env, true);
raise_exception(env, EXCP01_DB);
}
break;
}
}
}
}
typedef struct MCEInjectionParams {
Monitor *mon;
X86CPU *cpu;

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@ -95,15 +95,6 @@ void helper_into(CPUX86State *env, int next_eip_addend)
}
}
void helper_single_step(CPUX86State *env)
{
#ifndef CONFIG_USER_ONLY
check_hw_breakpoints(env, true);
env->dr[6] |= DR6_BS;
#endif
raise_exception(env, EXCP01_DB);
}
void helper_cpuid(CPUX86State *env)
{
uint32_t eax, ebx, ecx, edx;
@ -127,10 +118,6 @@ target_ulong helper_read_crN(CPUX86State *env, int reg)
void helper_write_crN(CPUX86State *env, int reg, target_ulong t0)
{
}
void helper_movl_drN_T0(CPUX86State *env, int reg, target_ulong t0)
{
}
#else
target_ulong helper_read_crN(CPUX86State *env, int reg)
{
@ -176,27 +163,6 @@ void helper_write_crN(CPUX86State *env, int reg, target_ulong t0)
break;
}
}
void helper_movl_drN_T0(CPUX86State *env, int reg, target_ulong t0)
{
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);
}
} else {
env->dr[reg] = t0;
}
}
#endif
void helper_lmsw(CPUX86State *env, target_ulong t0)