ARM: Make ArmLinuxProcess understand "ARM private" system calls.
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2 changed files with 25 additions and 4 deletions
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@ -411,20 +411,36 @@ SyscallDesc ArmLinuxProcess::syscallDescs[] = {
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/* 346 */ SyscallDesc("epoll_pwait", unimplementedFunc),
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};
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SyscallDesc ArmLinuxProcess::privSyscallDescs[] = {
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/* 1 */ SyscallDesc("breakpoint", unimplementedFunc),
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/* 2 */ SyscallDesc("cacheflush", unimplementedFunc),
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/* 3 */ SyscallDesc("usr26", unimplementedFunc),
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/* 4 */ SyscallDesc("usr32", unimplementedFunc),
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/* 5 */ SyscallDesc("set_tls", unimplementedFunc)
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};
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ArmLinuxProcess::ArmLinuxProcess(LiveProcessParams * params,
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ObjectFile *objFile)
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: ArmLiveProcess(params, objFile),
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Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc))
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Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc)),
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Num_Priv_Syscall_Descs(sizeof(privSyscallDescs) / sizeof(SyscallDesc))
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{ }
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SyscallDesc*
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ArmLinuxProcess::getDesc(int callnum)
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{
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// Angel SWI syscalls are unsupported in this release
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if (callnum == 0x123456)
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if (callnum == 0x123456) {
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panic("Attempt to execute an ANGEL_SWI system call (newlib-related)");
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else if ((callnum & 0x00f00000) == 0x00900000)
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} else if ((callnum & 0x00f00000) == 0x00900000) {
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callnum &= 0x000fffff;
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if ((callnum & 0x0f0000) == 0xf0000) {
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callnum -= 0x0f0001;
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if (callnum < 0 || callnum > Num_Priv_Syscall_Descs)
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return NULL;
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return &privSyscallDescs[callnum];
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}
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}
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// Linux syscalls have to strip off the 0x00900000
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if (callnum < 0 || callnum > Num_Syscall_Descs)
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@ -48,7 +48,12 @@ class ArmLinuxProcess : public ArmLiveProcess
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/// Array of syscall descriptors, indexed by call number.
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static SyscallDesc syscallDescs[];
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/// Array of "arm private" syscall descriptors.
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static SyscallDesc privSyscallDescs[];
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const int Num_Syscall_Descs;
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const int Num_Priv_Syscall_Descs;
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};
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#endif // __ARM_LINUX_PROCESS_HH__
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