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Diffstat (limited to 'tools/debugserver/source/MacOSX/MachException.h')
| -rw-r--r-- | tools/debugserver/source/MacOSX/MachException.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/tools/debugserver/source/MacOSX/MachException.h b/tools/debugserver/source/MacOSX/MachException.h new file mode 100644 index 000000000000..c831479f2b6d --- /dev/null +++ b/tools/debugserver/source/MacOSX/MachException.h @@ -0,0 +1,133 @@ +//===-- MachException.h -----------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Created by Greg Clayton on 6/18/07. +// +//===----------------------------------------------------------------------===// + + +#ifndef __MachException_h__ +#define __MachException_h__ + +#include <mach/mach.h> +#include <vector> + +class MachProcess; +class PThreadMutex; + +typedef union MachMessageTag +{ + mach_msg_header_t hdr; + char data[1024]; +} MachMessage; + + +class MachException +{ +public: + + struct PortInfo + { + exception_mask_t mask; // the exception mask for this device which may be a subset of EXC_MASK_ALL... + exception_mask_t masks[EXC_TYPES_COUNT]; + mach_port_t ports[EXC_TYPES_COUNT]; + exception_behavior_t behaviors[EXC_TYPES_COUNT]; + thread_state_flavor_t flavors[EXC_TYPES_COUNT]; + mach_msg_type_number_t count; + + kern_return_t Save(task_t task); + kern_return_t Restore(task_t task); + }; + + struct Data + { + task_t task_port; + thread_t thread_port; + exception_type_t exc_type; + std::vector<mach_exception_data_type_t> exc_data; + Data() : + task_port(TASK_NULL), + thread_port(THREAD_NULL), + exc_type(0), + exc_data() + { + } + + void Clear() + { + task_port = TASK_NULL; + thread_port = THREAD_NULL; + exc_type = 0; + exc_data.clear(); + } + bool IsValid() const + { + return task_port != TASK_NULL && + thread_port != THREAD_NULL && + exc_type != 0; + } + // Return the SoftSignal for this MachException data, or zero if there is none + int SoftSignal() const + { + if (exc_type == EXC_SOFTWARE && exc_data.size() == 2 && exc_data[0] == EXC_SOFT_SIGNAL) + return static_cast<int>(exc_data[1]); + return 0; + } + bool IsBreakpoint() const + { + return (exc_type == EXC_BREAKPOINT || ((exc_type == EXC_SOFTWARE) && exc_data[0] == 1)); + } + void Dump() const; + void DumpStopReason() const; + bool GetStopInfo(struct DNBThreadStopInfo *stop_info) const; + }; + + struct Message + { + MachMessage exc_msg; + MachMessage reply_msg; + Data state; + + Message() : + state() + { + memset(&exc_msg, 0, sizeof(exc_msg)); + memset(&reply_msg, 0, sizeof(reply_msg)); + } + bool CatchExceptionRaise(task_t task); + void Dump() const; + kern_return_t Reply (MachProcess *process, int signal); + kern_return_t Receive( mach_port_t receive_port, + mach_msg_option_t options, + mach_msg_timeout_t timeout, + mach_port_t notify_port = MACH_PORT_NULL); + + typedef std::vector<Message> collection; + typedef collection::iterator iterator; + typedef collection::const_iterator const_iterator; + }; + + enum + { + e_actionForward, // Forward signal to inferior process + e_actionStop, // Stop when this signal is received + }; + struct Action + { + task_t task_port; // Set to TASK_NULL for any TASK + thread_t thread_port; // Set to THREAD_NULL for any thread + exception_type_t exc_mask; // Mach exception mask to watch for + std::vector<mach_exception_data_type_t> exc_data_mask; // Mask to apply to exception data, or empty to ignore exc_data value for exception + std::vector<mach_exception_data_type_t> exc_data_value; // Value to compare to exception data after masking, or empty to ignore exc_data value for exception + uint8_t flags; // Action flags describing what to do with the exception + }; + static const char *Name(exception_type_t exc_type); +}; + +#endif |