Support for a non-native application
Aspects of the invention are directed to a systems and methods for operating a non-native binary in dynamic binary translation environment. In accordance with an embodiment, there is provided a computer program product in a computer readable medium. The product includes program code for receiving a non-native binary in a computer readable medium and program code for translating the non-native binary. Additionally, the product includes program code for executing the translated non-native binary, the non-native binary including one or more threads, and program code for pausing execution of the translated non-native binary. The product also includes program code for providing guest instruction boundary information to a monitoring process and program code for analyzing a state of each thread of the translated non-native binary. Moreover, the product includes program code for fast-forwarding at least one thread so that its state is consistent with the guest instruction boundary.
1. One or more non-transitory computer readable media comprising instructions which, when executed by one or more hardware processors, cause performance of operations comprising:
translating a non-native binary using a binary translator to obtain a translated non-native binary, wherein a particular non-native binary instruction is translated to a plurality of translated non-native binary instructions, and wherein an instruction boundary associated with the particular non-native binary instruction corresponds to a last instruction in the plurality of translated non-native binary instructions;
beginning execution of the translated non-native binary on a host operating system;
during execution of a particular translated non-native binary instruction of the plurality of translated non-native binary instructions: receiving a command to pause execution of the translated non-native binary;
responsive to receiving the command: pausing execution of the translated non-native binary after executing the particular translated non-native binary instruction of the plurality of translated non-native binary instructions and before executing a next instruction of the plurality of translated non-native binary instructions;
determining, by a monitoring process, that the execution of the translated non-native binary has not been paused at any instruction boundary associated with the non-native binary;
causing, by the monitoring process, execution of at least the last instruction of the particular plurality of translated non-native binary instructions to reach the instruction boundary associated with the particular non-native binary instruction; and
pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction.
2. The media of claim 1 , wherein the operations further comprise: saving a state of the non-native binary after pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction.
3. The media of claim 1 , wherein the operations further comprise: exporting, to the monitoring process, a state of the non-native binary after pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction.
4. The media of claim 3 wherein the monitoring process comprises a non-native process different than the non-native binary.
5. The media of claim 1 , wherein the operations further comprise:
determining if an address space of the non-native binary has been modified; and
routing execution of the translated non-native binary through a special service routine if the address space is modified.
6. The media of claim 5 wherein routing execution of the translated non-native binary through the special service routine comprises:
flushing cache code; and
translating the address space of the non-native binary that has been modified.
7. The media of claim 5 wherein determining if the address space of the non-native binary has been modified is based on a /proc/pid/as file of the non-native binary.
8. A system comprising:
at least one device including a hardware processor; and
the system configured to perform operations comprising:
translating a non-native binary using a binary translator to obtain a translated non-native binary, wherein a particular non-native binary instruction is translated to a plurality of translated non-native binary instructions, and wherein an instruction boundary associated with the particular non-native binary instruction corresponds to a last instruction in the plurality of translated non-native binary instructions;
beginning execution of the translated non-native binary on a host operating system;
during execution of a particular translated non-native binary instruction of the plurality of translated non-native binary instructions: receiving a command to pause execution of the translated non-native binary;
responsive to receiving the command: pausing execution of the translated non-native binary after executing the particular translated non-native binary instruction of the plurality of translated non-native binary instructions and before executing a next instruction of the plurality of translated non-native binary instructions;
determining, by a monitoring process, that the execution of the translated non-native binary has not been paused at any instruction boundary associated with the non-native binary;
causing, by the monitoring process, execution of at least the last instruction of the particular plurality of translated non-native binary instructions to reach the instruction boundary associated with the particular non-native binary instruction; and
pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction.
9. The system of claim 8 wherein the operations further comprise: exporting a register state of the non-native binary after pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction.
10. The system of claim 9 wherein the register state is exported to an offset address relative to a binary translator in a computer readable medium.
11. The system of claim 8 wherein the operations further comprise: reading a register state of the non-native binary by opening a /proc/pid/as file of the non-native binary.
12. The system of claim 8 , wherein the operations further comprise: reading, by a second non-native binary, a register state of the non-native binary.
13. The media of claim 1 wherein the instruction boundary associated with the particular non-native binary instruction indicates a stopping point in the plurality of translated non-native binary instructions.
14. The media of claim 1 , wherein the operations further comprise: exporting a state of the non-native binary, after pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction, to an offset address relative to a binary translator.
15. A method, comprising:
translating a non-native binary using a binary translator to obtain a translated non-native binary, wherein a particular non-native binary instruction corresponds to a particular plurality of translated non-native binary instructions, and wherein an instruction boundary associated with the particular non-native binary instruction corresponds to a last instruction in the particular plurality of translated non-native binary instructions;
beginning execution of the translated non-native binary on a host operating system;
during execution of a particular translated non-native binary instruction of the plurality of translated non-native binary instructions: receiving a command to pause execution of the translated non-native binary;
responsive to receiving the command: pausing execution of the translated non-native binary after executing the particular translated non-native binary instruction of the plurality of translated non-native binary instructions and before executing a next instruction of the plurality of translated non-native binary instructions;
determining, by a monitoring process, that the execution of the translated non-native binary has not been paused at any instruction boundary associated with the non-native binary;
causing, by the monitoring process, execution of at least the last instruction of the particular plurality of translated non-native binary instructions to reach the instruction boundary associated with the particular non-native binary instruction; and
pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction;
wherein the method is performed by at least one device including a hardware processor.
16. The method of claim 15 , further comprising: exporting, to the monitoring process, a state of the non-native binary after pausing execution of the translated non-native binary when the last instruction has been executed to reach the instruction boundary associated with the particular non-native binary instruction.
17. The method of claim 16 , wherein the monitoring process comprises a non-native process different than the non-native binary.
18. The method of claim 15 , further comprising:
determining whether an address space of the non-native binary has been modified; and
routing execution of the translated non-native binary through a special service routine if the address space is modified.
19. The method of claim 18 , wherein routing execution of the translated non-native binary through a special service routine comprises:
flushing code cache; and
translating the address space of the non-native binary that has been modified.
20. The method of claim 18 , wherein determining whether the address space of the non-native binary has been modified is based on a prod/pid/as file of the non-native binary.