This will be used in a future patch to implement an
architecture-specific single step mechanism for POWER.
Signed-off-by: Fabiano Rosas <faro...@linux.ibm.com>
---
accel/kvm/kvm-all.c | 10 ++++++++++
exec.c | 1 +
include/sysemu/kvm.h | 4 ++++
target/arm/kvm.c | 4 ++++
target/i386/kvm.c | 4 ++++
target/mips/kvm.c | 4 ++++
target/ppc/kvm.c | 4 ++++
target/s390x/kvm.c | 4 ++++
8 files changed, 35 insertions(+)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 4880a05399..4fb7199a15 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -2313,6 +2313,11 @@ int kvm_update_guest_debug(CPUState *cpu, unsigned long
reinject_trap)
return data.err;
}
+void kvm_set_singlestep(CPUState *cs, int enabled)
+{
+ kvm_arch_set_singlestep(cs, enabled);
+}
+
int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
target_ulong len, int type)
{
@@ -2439,6 +2444,11 @@ int kvm_remove_breakpoint(CPUState *cpu, target_ulong
addr,
void kvm_remove_all_breakpoints(CPUState *cpu)
{
}
+
+void kvm_set_singlestep(CPUState *cs, int enabled)
+{
+}
+
#endif /* !KVM_CAP_SET_GUEST_DEBUG */
static int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset)
diff --git a/exec.c b/exec.c
index bb6170dbff..55614822c3 100644
--- a/exec.c
+++ b/exec.c
@@ -1233,6 +1233,7 @@ void cpu_single_step(CPUState *cpu, int enabled)
if (cpu->singlestep_enabled != enabled) {
cpu->singlestep_enabled = enabled;
if (kvm_enabled()) {
+ kvm_set_singlestep(cpu, enabled);
kvm_update_guest_debug(cpu, 0);
} else {
/* must flush all the translated code to avoid inconsistencies */
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 97d8d9d0d5..a01a8d58dd 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -259,6 +259,8 @@ int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
void kvm_remove_all_breakpoints(CPUState *cpu);
int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap);
+void kvm_set_singlestep(CPUState *cpu, int enabled);
+
int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
int kvm_on_sigbus(int code, void *addr);
@@ -431,6 +433,8 @@ void kvm_arch_remove_all_hw_breakpoints(void);
void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg);
+void kvm_arch_set_singlestep(CPUState *cpu, int enabled);
+
bool kvm_arch_stop_on_emulation_error(CPUState *cpu);
int kvm_check_extension(KVMState *s, unsigned int extension);
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 44dd0ce6ce..dd8e43ab7e 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -670,6 +670,10 @@ int kvm_arch_process_async_events(CPUState *cs)
return 0;
}
+void kvm_arch_set_singlestep(CPUState *cs, int enabled)
+{
+}
+
/* The #ifdef protections are until 32bit headers are imported and can
* be removed once both 32 and 64 bit reach feature parity.
*/
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index f524e7d929..ba56f2ee1f 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -3521,6 +3521,10 @@ static int kvm_handle_debug(X86CPU *cpu,
return ret;
}
+void kvm_arch_set_singlestep(CPUState *cs, int enabled)
+{
+}
+
void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
{
const uint8_t type_code[] = {
diff --git a/target/mips/kvm.c b/target/mips/kvm.c
index 8e72850962..8035262131 100644
--- a/target/mips/kvm.c
+++ b/target/mips/kvm.c
@@ -119,6 +119,10 @@ int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct
kvm_sw_breakpoint *bp)
return 0;
}
+void kvm_arch_set_singlestep(CPUState *cs, int enabled)
+{
+}
+
static inline int cpu_mips_io_interrupts_pending(MIPSCPU *cpu)
{
CPUMIPSState *env = &cpu->env;
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index f81327d6cd..9d0b4f1f3f 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -1551,6 +1551,10 @@ void kvm_arch_remove_all_hw_breakpoints(void)
nb_hw_breakpoint = nb_hw_watchpoint = 0;
}
+void kvm_arch_set_singlestep(CPUState *cs, int enabled)
+{
+}
+
void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg)
{
int n;
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 2ebf26adfe..4bde183458 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -975,6 +975,10 @@ void kvm_arch_remove_all_hw_breakpoints(void)
hw_breakpoints = NULL;
}
+void kvm_arch_set_singlestep(CPUState *cs, int enabled)
+{
+}
+
void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
{
int i;
--
2.17.1
