cpu: Rename CPUState @singlestep_enabled -> @singlestep_flags

CPUState::singlestep_enabled contains multiple flags since
commit 60897d369f ("Debugger single step without interrupts").
Use an unsigned type and rename the field to avoid mistakes.

Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20260705215729.62196-32-philmd@oss.qualcomm.com>

accel/kvm/kvm-all.c

@@ -3815,7 +3815,7 @@ int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap)
     if (cpu_single_stepping(cpu)) {
         data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP;
 
-        if (cpu->singlestep_enabled & SSTEP_NOIRQ) {
+        if (cpu->singlestep_flags & SSTEP_NOIRQ) {
             data.dbg.control |= KVM_GUESTDBG_BLOCKIRQ;
         }
     }

accel/tcg/cpu-exec.c

@@ -828,7 +828,7 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
                 return true;
             }
 
-            if (unlikely(cpu->singlestep_enabled & SSTEP_NOIRQ)) {
+            if (unlikely(cpu->singlestep_flags & SSTEP_NOIRQ)) {
                 /* Mask out external interrupts for this step. */
                 interrupt_request &= ~CPU_INTERRUPT_SSTEP_MASK;
             }

accel/tcg/tcg-accel-ops-rr.c

@@ -274,7 +274,7 @@ static void *rr_cpu_thread_fn(void *arg)
             current_cpu = cpu;
 
             qemu_clock_enable(QEMU_CLOCK_VIRTUAL,
-                              (cpu->singlestep_enabled & SSTEP_NOTIMER) == 0);
+                              (cpu->singlestep_flags & SSTEP_NOTIMER) == 0);
 
             if (cpu_can_run(cpu)) {
                 int r;

cpu-target.c

@@ -28,12 +28,12 @@
 
 /* enable or disable single step mode. EXCP_DEBUG is returned by the
    CPU loop after each instruction */
-void cpu_single_step(CPUState *cpu, int enabled)
+void cpu_single_step(CPUState *cpu, unsigned flags)
 {
-    if (cpu->singlestep_enabled != enabled) {
+    if (cpu->singlestep_flags != flags) {
         trace_cpu_change_singlestep_flags(cpu->cpu_index,
-                                          cpu->singlestep_enabled, enabled);
+                                          cpu->singlestep_flags, flags);
-        cpu->singlestep_enabled = enabled;
+        cpu->singlestep_flags = flags;
 
 #if !defined(CONFIG_USER_ONLY)
         const AccelOpsClass *ops = cpus_get_accel();

include/hw/core/cpu.h

@@ -440,7 +440,7 @@ struct qemu_work_item;
  * @stopped: Indicates the CPU has been artificially stopped.
  * @unplug: Indicates a pending CPU unplug request.
  * @crash_occurred: Indicates the OS reported a crash (panic) for this CPU
- * @singlestep_enabled: Flags for single-stepping.
+ * @singlestep_flags: Flags for single-stepping.
  * @icount_extra: Instructions until next timer event.
  * @cpu_ases: Pointer to array of CPUAddressSpaces (which define the
  *            AddressSpaces this CPU has)
@@ -505,7 +505,7 @@ struct CPUState {
     int exclusive_context_count;
     uint32_t cflags_next_tb;
     uint32_t interrupt_request;
-    int singlestep_enabled;
+    unsigned singlestep_flags;
     int64_t icount_budget;
     int64_t icount_extra;
     uint64_t random_seed;
@@ -1132,11 +1132,11 @@ void qemu_init_vcpu(CPUState *cpu);
 /**
  * cpu_single_step:
  * @cpu: CPU to the flags for.
- * @enabled: Flags to enable.
+ * @flags: Flags to enable.
  *
  * Enables or disables single-stepping for @cpu.
  */
-void cpu_single_step(CPUState *cpu, int enabled);
+void cpu_single_step(CPUState *cpu, unsigned flags);
 
 /**
  * cpu_single_stepping:
@@ -1146,7 +1146,7 @@ void cpu_single_step(CPUState *cpu, int enabled);
  */
 static inline bool cpu_single_stepping(const CPUState *cpu)
 {
-    return cpu->singlestep_enabled;
+    return cpu->singlestep_flags;
 }
 
 int cpu_breakpoint_insert(CPUState *cpu, vaddr pc, int flags,

target/arm/hvf/hvf.c

@@ -2603,7 +2603,7 @@ int hvf_arch_vcpu_exec(CPUState *cpu)
     flush_cpu_state(cpu);
 
     do {
-        if (!(cpu->singlestep_enabled & SSTEP_NOIRQ) &&
+        if (!(cpu->singlestep_flags & SSTEP_NOIRQ) &&
             hvf_inject_interrupts(cpu)) {
             return EXCP_INTERRUPT;
         }

target/ppc/translate.c

@@ -198,7 +198,7 @@ struct DisasContext {
     bool pmu_insn_cnt;
     bool bhrb_enable;
     ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */
-    int singlestep_enabled;
+    int singlestep_flags;
     uint32_t flags;
     uint64_t insns_flags;
     uint64_t insns_flags2;
@@ -367,7 +367,7 @@ static void gen_debug_exception(DisasContext *ctx, bool rfi_type)
 #if !defined(CONFIG_USER_ONLY)
     if (ctx->flags & POWERPC_FLAG_DE) {
         target_ulong dbsr = 0;
-        if (ctx->singlestep_enabled & CPU_SINGLE_STEP) {
+        if (ctx->singlestep_flags & CPU_SINGLE_STEP) {
             dbsr = DBCR0_ICMP;
         } else {
             /* Must have been branch */
@@ -3645,7 +3645,7 @@ static void pmu_count_insns(DisasContext *ctx)
 
 static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
 {
-    if (unlikely(ctx->singlestep_enabled)) {
+    if (unlikely(ctx->singlestep_flags)) {
         return false;
     }
     return translator_use_goto_tb(&ctx->base, dest);
@@ -3653,7 +3653,7 @@ static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
 
 static void gen_lookup_and_goto_ptr(DisasContext *ctx)
 {
-    if (unlikely(ctx->singlestep_enabled)) {
+    if (unlikely(ctx->singlestep_flags)) {
         gen_debug_exception(ctx, false);
     } else {
         /*
@@ -6559,13 +6559,13 @@ static void ppc_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
     ctx->pmu_insn_cnt = (hflags >> HFLAGS_INSN_CNT) & 1;
     ctx->bhrb_enable = (hflags >> HFLAGS_BHRB_ENABLE) & 1;
 
-    ctx->singlestep_enabled = 0;
+    ctx->singlestep_flags = 0;
     if ((hflags >> HFLAGS_SE) & 1) {
-        ctx->singlestep_enabled |= CPU_SINGLE_STEP;
+        ctx->singlestep_flags |= CPU_SINGLE_STEP;
         ctx->base.max_insns = 1;
     }
     if ((hflags >> HFLAGS_BE) & 1) {
-        ctx->singlestep_enabled |= CPU_BRANCH_STEP;
+        ctx->singlestep_flags |= CPU_BRANCH_STEP;
     }
 }
 
@@ -6641,7 +6641,7 @@ static void ppc_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
     }
 
     /* Honor single stepping. */
-    if (unlikely(ctx->singlestep_enabled & CPU_SINGLE_STEP)) {
+    if (unlikely(ctx->singlestep_flags & CPU_SINGLE_STEP)) {
         bool rfi_type = false;
 
         switch (is_jmp) {