int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info) { int handle = 0; int n; if (arch_info->exception == 1) { if (arch_info->dr6 & (1 << 14)) { if (cpu_single_env->singlestep_enabled) handle = 1; } else { for (n = 0; n < 4; n++) if (arch_info->dr6 & (1 << n)) switch ((arch_info->dr7 >> (16 + n*4)) & 0x3) { case 0x0: handle = 1; break; case 0x1: handle = 1; cpu_single_env->watchpoint_hit = &hw_watchpoint; hw_watchpoint.vaddr = hw_breakpoint[n].addr; hw_watchpoint.flags = BP_MEM_WRITE; break; case 0x3: handle = 1; cpu_single_env->watchpoint_hit = &hw_watchpoint; hw_watchpoint.vaddr = hw_breakpoint[n].addr; hw_watchpoint.flags = BP_MEM_ACCESS; break; } } } else if (kvm_find_sw_breakpoint(cpu_single_env, arch_info->pc)) handle = 1; if (!handle) { cpu_synchronize_state(cpu_single_env); assert(cpu_single_env->exception_injected == -1); cpu_single_env->exception_injected = arch_info->exception; cpu_single_env->has_error_code = 0; } return handle; }