diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/process.cc | 28 | ||||
| -rw-r--r-- | src/arch/x86/process.hh | 4 |
2 files changed, 25 insertions, 7 deletions
diff --git a/src/arch/x86/process.cc b/src/arch/x86/process.cc index 42ca7b27d..cedf6d706 100644 --- a/src/arch/x86/process.cc +++ b/src/arch/x86/process.cc @@ -550,7 +550,11 @@ X86LiveProcess::argsInit(int pageSize, auxv.push_back(auxv_t(M5_AT_EGID, egid())); //Whether to enable "secure mode" in the executable auxv.push_back(auxv_t(M5_AT_SECURE, 0)); - //The string "x86_64" with unknown meaning + //The address of 16 "random" bytes. + auxv.push_back(auxv_t(M5_AT_RANDOM, 0)); + //The name of the program + auxv.push_back(auxv_t(M5_AT_EXECFN, 0)); + //The platform string auxv.push_back(auxv_t(M5_AT_PLATFORM, 0)); } @@ -563,8 +567,11 @@ X86LiveProcess::argsInit(int pageSize, //It's purpose is to let the user space linker examine the original file. int file_name_size = filename.size() + 1; + const int numRandomBytes = 16; + int aux_data_size = numRandomBytes; + string platform = "x86_64"; - int aux_data_size = platform.size() + 1; + aux_data_size += platform.size() + 1; int env_data_size = 0; for (int i = 0; i < envp.size(); ++i) { @@ -657,9 +664,13 @@ X86LiveProcess::argsInit(int pageSize, //Write the file name initVirtMem->writeString(file_name_base, filename.c_str()); - //Fix up the aux vector which points to the "platform" string - assert(auxv[auxv.size() - 1].a_type = M5_AT_PLATFORM); - auxv[auxv.size() - 1].a_val = aux_data_base; + //Fix up the aux vectors which point to data + assert(auxv[auxv.size() - 3].a_type == M5_AT_RANDOM); + auxv[auxv.size() - 3].a_val = aux_data_base; + assert(auxv[auxv.size() - 2].a_type == M5_AT_EXECFN); + auxv[auxv.size() - 2].a_val = argv_array_base; + assert(auxv[auxv.size() - 1].a_type == M5_AT_PLATFORM); + auxv[auxv.size() - 1].a_val = aux_data_base + numRandomBytes; //Copy the aux stuff for(int x = 0; x < auxv.size(); x++) @@ -701,6 +712,8 @@ void X86_64LiveProcess::argsInit(int intSize, int pageSize) { std::vector<AuxVector<uint64_t> > extraAuxvs; + extraAuxvs.push_back(AuxVector<uint64_t>(M5_AT_SYSINFO_EHDR, + vsyscallPage.base)); X86LiveProcess::argsInit<uint64_t>(pageSize, extraAuxvs); } @@ -709,9 +722,10 @@ I386LiveProcess::argsInit(int intSize, int pageSize) { std::vector<AuxVector<uint32_t> > extraAuxvs; //Tell the binary where the vsyscall part of the vsyscall page is. - extraAuxvs.push_back(AuxVector<uint32_t>(0x20, + extraAuxvs.push_back(AuxVector<uint32_t>(M5_AT_SYSINFO, vsyscallPage.base + vsyscallPage.vsyscallOffset)); - extraAuxvs.push_back(AuxVector<uint32_t>(0x21, vsyscallPage.base)); + extraAuxvs.push_back(AuxVector<uint32_t>(M5_AT_SYSINFO_EHDR, + vsyscallPage.base)); X86LiveProcess::argsInit<uint32_t>(pageSize, extraAuxvs); } diff --git a/src/arch/x86/process.hh b/src/arch/x86/process.hh index 3ad2abe08..73cb6b81f 100644 --- a/src/arch/x86/process.hh +++ b/src/arch/x86/process.hh @@ -66,6 +66,10 @@ class SyscallDesc; namespace X86ISA { + enum X86AuxiliaryVectorTypes { + M5_AT_SYSINFO = 32, + M5_AT_SYSINFO_EHDR = 33 + }; class X86LiveProcess : public LiveProcess { |