diff options
Diffstat (limited to 'src/sim/syscall_emul.hh')
| -rw-r--r-- | src/sim/syscall_emul.hh | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh index 2ffd6d6ae..ef61299a0 100644 --- a/src/sim/syscall_emul.hh +++ b/src/sim/syscall_emul.hh @@ -1241,11 +1241,23 @@ SyscallReturn cloneFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) { int index = 0; + TheISA::IntReg flags = p->getSyscallArg(tc, index); TheISA::IntReg newStack = p->getSyscallArg(tc, index); Addr ptidPtr = p->getSyscallArg(tc, index); + +#if THE_ISA == RISCV_ISA + /** + * Linux kernel 4.15 sets CLONE_BACKWARDS flag for RISC-V. + * The flag defines the list of clone() arguments in the following + * order: flags -> newStack -> ptidPtr -> tlsPtr -> ctidPtr + */ + Addr tlsPtr M5_VAR_USED = p->getSyscallArg(tc, index); + Addr ctidPtr = p->getSyscallArg(tc, index); +#else Addr ctidPtr = p->getSyscallArg(tc, index); Addr tlsPtr M5_VAR_USED = p->getSyscallArg(tc, index); +#endif if (((flags & OS::TGT_CLONE_SIGHAND)&& !(flags & OS::TGT_CLONE_VM)) || ((flags & OS::TGT_CLONE_THREAD) && !(flags & OS::TGT_CLONE_SIGHAND)) || @@ -1340,7 +1352,7 @@ cloneFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) ctc->setMiscReg(TheISA::MISCREG_ASI, TheISA::ASI_PRIMARY); for (int y = 8; y < 32; y++) ctc->setIntReg(y, tc->readIntReg(y)); -#elif THE_ISA == ARM_ISA or THE_ISA == X86_ISA +#elif THE_ISA == ARM_ISA or THE_ISA == X86_ISA or THE_ISA == RISCV_ISA TheISA::copyRegs(tc, ctc); #endif |