KVM: Silence unused s warning

[qemu.git] / cpu-exec.c

diff --git a/cpu-exec.c b/cpu-exec.c
index 1955d24418dc2b93ee650f0eeb5bb2687ef1c55b..ed1545b5e15064d4f7124c28b75644d5ac20f11b 100644 (file)
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -183,6 +183,28 @@ static inline TranslationBlock *tb_find_fast(void)
     return tb;
 }
 
+static CPUDebugExcpHandler *debug_excp_handler;
+
+CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler)
+{
+    CPUDebugExcpHandler *old_handler = debug_excp_handler;
+
+    debug_excp_handler = handler;
+    return old_handler;
+}
+
+static void cpu_handle_debug_exception(CPUState *env)
+{
+    CPUWatchpoint *wp;
+
+    if (!env->watchpoint_hit)
+        TAILQ_FOREACH(wp, &env->watchpoints, entry)
+            wp->flags &= ~BP_WATCHPOINT_HIT;
+
+    if (debug_excp_handler)
+        debug_excp_handler(env);
+}
+
 /* main execution loop */
 
 int cpu_exec(CPUState *env1)
@@ -237,6 +259,8 @@ int cpu_exec(CPUState *env1)
                 if (env->exception_index >= EXCP_INTERRUPT) {
                     /* exit request from the cpu execution loop */
                     ret = env->exception_index;
+                    if (ret == EXCP_DEBUG)
+                        cpu_handle_debug_exception(env);
                     break;
                 } else if (env->user_mode_only) {
                     /* if user mode only, we simulate a fake exception
@@ -377,11 +401,11 @@ int cpu_exec(CPUState *env1)
                             int intno;
                             /* FIXME: this should respect TPR */
                             svm_check_intercept(SVM_EXIT_VINTR);
-                            env->interrupt_request &= ~CPU_INTERRUPT_VIRQ;
                             intno = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_vector));
                             if (loglevel & CPU_LOG_TB_IN_ASM)
                                 fprintf(logfile, "Servicing virtual hardware INT=0x%02x\n", intno);
                             do_interrupt(intno, 0, 0, 0, 1);
+                            env->interrupt_request &= ~CPU_INTERRUPT_VIRQ;
                             next_tb = 0;
 #endif
                         }
@@ -894,7 +918,7 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
     /* we restore the process signal mask as the sigreturn should
        do it (XXX: use sigsetjmp) */
         sigprocmask(SIG_SETMASK, old_set, NULL);
-        do_raise_exception_err(env->exception_index, env->error_code);
+        cpu_loop_exit();
     } else {
         /* activate soft MMU for this block */
         cpu_resume_from_signal(env, puc);
@@ -1164,17 +1188,32 @@ int cpu_signal_handler(int host_signum, void *pinfo,
 
 #elif defined(__x86_64__)
 
+#ifdef __NetBSD__
+#define REG_ERR _REG_ERR
+#define REG_TRAPNO _REG_TRAPNO
+
+#define QEMU_UC_MCONTEXT_GREGS(uc, reg)        (uc)->uc_mcontext.__gregs[(reg)]
+#define QEMU_UC_MACHINE_PC(uc)         _UC_MACHINE_PC(uc)
+#else
+#define QEMU_UC_MCONTEXT_GREGS(uc, reg)        (uc)->uc_mcontext.gregs[(reg)]
+#define QEMU_UC_MACHINE_PC(uc)         QEMU_UC_MCONTEXT_GREGS(uc, REG_RIP)
+#endif
+
 int cpu_signal_handler(int host_signum, void *pinfo,
                        void *puc)
 {
     siginfo_t *info = pinfo;
-    struct ucontext *uc = puc;
     unsigned long pc;
+#ifdef __NetBSD__
+    ucontext_t *uc = puc;
+#else
+    struct ucontext *uc = puc;
+#endif
 
-    pc = uc->uc_mcontext.gregs[REG_RIP];
+    pc = QEMU_UC_MACHINE_PC(uc);
     return handle_cpu_signal(pc, (unsigned long)info->si_addr,
-                             uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe ?
-                             (uc->uc_mcontext.gregs[REG_ERR] >> 1) & 1 : 0,
+                             QEMU_UC_MCONTEXT_GREGS(uc, REG_TRAPNO) == 0xe ?
+                             (QEMU_UC_MCONTEXT_GREGS(uc, REG_ERR) >> 1) & 1 : 0,
                              &uc->uc_sigmask, puc);
 }