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| author | Gabe Black <gblack@eecs.umich.edu> | 2009-06-09 23:38:50 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2009-06-09 23:38:50 -0700 |
| commit | 5daeefc5059ff98b63f06c963da2ffb17ef95df7 (patch) | |
| tree | e8b55cd86877da68e0f990b0aace3ddc9ac1d2f6 | |
| parent | fbf4dc9da25e5dc18a8336b462f9c8bf7ef39364 (diff) | |
| download | gem5-5daeefc5059ff98b63f06c963da2ffb17ef95df7.tar.xz | |
ARM: Make ArmLinuxProcess understand "ARM private" system calls.
| -rw-r--r-- | src/arch/arm/linux/process.cc | 22 | ||||
| -rw-r--r-- | src/arch/arm/linux/process.hh | 7 |
2 files changed, 25 insertions, 4 deletions
diff --git a/src/arch/arm/linux/process.cc b/src/arch/arm/linux/process.cc index 3b057ab68..25307e106 100644 --- a/src/arch/arm/linux/process.cc +++ b/src/arch/arm/linux/process.cc @@ -411,20 +411,36 @@ SyscallDesc ArmLinuxProcess::syscallDescs[] = { /* 346 */ SyscallDesc("epoll_pwait", unimplementedFunc), }; +SyscallDesc ArmLinuxProcess::privSyscallDescs[] = { + /* 1 */ SyscallDesc("breakpoint", unimplementedFunc), + /* 2 */ SyscallDesc("cacheflush", unimplementedFunc), + /* 3 */ SyscallDesc("usr26", unimplementedFunc), + /* 4 */ SyscallDesc("usr32", unimplementedFunc), + /* 5 */ SyscallDesc("set_tls", unimplementedFunc) +}; + ArmLinuxProcess::ArmLinuxProcess(LiveProcessParams * params, ObjectFile *objFile) : ArmLiveProcess(params, objFile), - Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc)) + Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc)), + Num_Priv_Syscall_Descs(sizeof(privSyscallDescs) / sizeof(SyscallDesc)) { } SyscallDesc* ArmLinuxProcess::getDesc(int callnum) { // Angel SWI syscalls are unsupported in this release - if (callnum == 0x123456) + if (callnum == 0x123456) { panic("Attempt to execute an ANGEL_SWI system call (newlib-related)"); - else if ((callnum & 0x00f00000) == 0x00900000) + } else if ((callnum & 0x00f00000) == 0x00900000) { callnum &= 0x000fffff; + if ((callnum & 0x0f0000) == 0xf0000) { + callnum -= 0x0f0001; + if (callnum < 0 || callnum > Num_Priv_Syscall_Descs) + return NULL; + return &privSyscallDescs[callnum]; + } + } // Linux syscalls have to strip off the 0x00900000 if (callnum < 0 || callnum > Num_Syscall_Descs) diff --git a/src/arch/arm/linux/process.hh b/src/arch/arm/linux/process.hh index 524661b5b..205a40418 100644 --- a/src/arch/arm/linux/process.hh +++ b/src/arch/arm/linux/process.hh @@ -45,10 +45,15 @@ class ArmLinuxProcess : public ArmLiveProcess /// The target system's hostname. static const char *hostname; - /// Array of syscall descriptors, indexed by call number. + /// Array of syscall descriptors, indexed by call number. static SyscallDesc syscallDescs[]; + /// Array of "arm private" syscall descriptors. + static SyscallDesc privSyscallDescs[]; + const int Num_Syscall_Descs; + + const int Num_Priv_Syscall_Descs; }; #endif // __ARM_LINUX_PROCESS_HH__ |