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[Qemu-devel] [PATCH 20/22] target/i386: add the tcg_enabled() in target/
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 20/22] target/i386: add the tcg_enabled() in target/i386/ |
Date: |
Mon, 3 Jul 2017 18:34:51 +0200 |
From: Yang Zhong <address@hidden>
Add the tcg_enabled() where the x86 target needs to disable
TCG-specific code.
Signed-off-by: Yang Zhong <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
target/i386/bpt_helper.c | 32 +++++++++++++++++++++++---------
target/i386/cpu.c | 4 +++-
target/i386/cpu.h | 8 +++++++-
target/i386/machine.c | 5 +++--
4 files changed, 36 insertions(+), 13 deletions(-)
diff --git a/target/i386/bpt_helper.c b/target/i386/bpt_helper.c
index b3efdc7..e0fa54c 100644
--- a/target/i386/bpt_helper.c
+++ b/target/i386/bpt_helper.c
@@ -215,10 +215,12 @@ void breakpoint_handler(CPUState *cs)
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_loop_exit_noexc(cs);
+ if (tcg_enabled()) {
+ if (check_hw_breakpoints(env, false)) {
+ raise_exception(env, EXCP01_DB);
+ } else {
+ cpu_loop_exit_noexc(cs);
+ }
}
}
} else {
@@ -226,7 +228,9 @@ void breakpoint_handler(CPUState *cs)
if (bp->pc == env->eip) {
if (bp->flags & BP_CPU) {
check_hw_breakpoints(env, true);
- raise_exception(env, EXCP01_DB);
+ if (tcg_enabled()) {
+ raise_exception(env, EXCP01_DB);
+ }
}
break;
}
@@ -241,7 +245,9 @@ void helper_single_step(CPUX86State *env)
check_hw_breakpoints(env, true);
env->dr[6] |= DR6_BS;
#endif
- raise_exception(env, EXCP01_DB);
+ if (tcg_enabled()) {
+ raise_exception(env, EXCP01_DB);
+ }
}
void helper_rechecking_single_step(CPUX86State *env)
@@ -282,7 +288,9 @@ void helper_set_dr(CPUX86State *env, int reg, target_ulong
t0)
cpu_x86_update_dr7(env, t0);
return;
}
- raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
+ if (tcg_enabled()) {
+ raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
+ }
#endif
}
@@ -304,7 +312,11 @@ target_ulong helper_get_dr(CPUX86State *env, int reg)
return env->dr[7];
}
}
- raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
+ if (tcg_enabled()) {
+ raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
+ } else {
+ return 0;
+ }
}
/* Check if Port I/O is trapped by a breakpoint. */
@@ -329,7 +341,9 @@ void helper_bpt_io(CPUX86State *env, uint32_t port,
if (hit) {
env->dr[6] = (env->dr[6] & ~0xf) | hit;
env->eip = next_eip;
- raise_exception(env, EXCP01_DB);
+ if (tcg_enabled()) {
+ raise_exception(env, EXCP01_DB);
+ }
}
#endif
}
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 642519a..c571772 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -4040,8 +4040,10 @@ static void x86_cpu_common_class_init(ObjectClass *oc,
void *data)
cc->class_by_name = x86_cpu_class_by_name;
cc->parse_features = x86_cpu_parse_featurestr;
cc->has_work = x86_cpu_has_work;
+#ifdef CONFIG_TCG
cc->do_interrupt = x86_cpu_do_interrupt;
cc->cpu_exec_interrupt = x86_cpu_exec_interrupt;
+#endif
cc->dump_state = x86_cpu_dump_state;
cc->get_crash_info = x86_cpu_get_crash_info;
cc->set_pc = x86_cpu_set_pc;
@@ -4070,7 +4072,7 @@ static void x86_cpu_common_class_init(ObjectClass *oc,
void *data)
cc->gdb_core_xml_file = "i386-32bit.xml";
cc->gdb_num_core_regs = 41;
#endif
-#ifndef CONFIG_USER_ONLY
+#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
cc->debug_excp_handler = breakpoint_handler;
#endif
cc->cpu_exec_enter = x86_cpu_exec_enter;
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 67a6091..27732ad 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -52,7 +52,9 @@
#include "exec/cpu-defs.h"
+#ifdef CONFIG_TCG
#include "fpu/softfloat.h"
+#endif
#define R_EAX 0
#define R_ECX 1
@@ -1598,7 +1600,11 @@ void update_fp_status(CPUX86State *env);
static inline uint32_t cpu_compute_eflags(CPUX86State *env)
{
- return env->eflags | cpu_cc_compute_all(env, CC_OP) | (env->df & DF_MASK);
+ uint32_t eflags = env->eflags;
+ if (tcg_enabled()) {
+ eflags |= cpu_cc_compute_all(env, CC_OP) | (env->df & DF_MASK);
+ }
+ return eflags;
}
/* NOTE: the translator must set DisasContext.cc_op to CC_OP_EFLAGS
diff --git a/target/i386/machine.c b/target/i386/machine.c
index 53587ae..b78b36c 100644
--- a/target/i386/machine.c
+++ b/target/i386/machine.c
@@ -280,8 +280,9 @@ static int cpu_post_load(void *opaque, int version_id)
for(i = 0; i < 8; i++) {
env->fptags[i] = (env->fptag_vmstate >> i) & 1;
}
- update_fp_status(env);
-
+ if (tcg_enabled()) {
+ update_fp_status(env);
+ }
cpu_breakpoint_remove_all(cs, BP_CPU);
cpu_watchpoint_remove_all(cs, BP_CPU);
{
--
1.8.3.1
- [Qemu-devel] [PATCH 18/22] target/i386: split cpu_set_mxcsr() and make cpu_set_fpuc() inline, (continued)