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Kernel/riscv64: Implement fork

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Sönke Holz 2024-03-05 17:04:44 +01:00 committed by Andrew Kaster
parent faede8c93a
commit 65724efac3
Notes: sideshowbarker 2024-07-17 05:58:46 +09:00 
Author: https://github.com/spholz
Commit: https://github.com/SerenityOS/serenity/commit/65724efac3
Pull-request: https://github.com/SerenityOS/serenity/pull/23514
Reviewed-by: https://github.com/ADKaster ✅
1 changed files with 7 additions and 3 deletions
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10
Kernel/Syscalls/fork.cpp
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@ -150,9 +150,13 @@ ErrorOr<FlatPtr> Process::sys$fork(RegisterState& regs)
child_regs.elr_el1 = regs.elr_el1; child_regs.elr_el1 = regs.elr_el1;
child_regs.sp_el0 = regs.sp_el0; child_regs.sp_el0 = regs.sp_el0;
#elif ARCH(RISCV64) #elif ARCH(RISCV64)
(void)child_regs; for (size_t i = 0; i < array_size(child_regs.x); ++i)
(void)regs; child_regs.x[i] = regs.x[i];
TODO_RISCV64(); child_regs.x[9] = 0; // fork() returns 0 in the child :^)
child_regs.sstatus = regs.sstatus;
child_regs.pc = regs.sepc;
dbgln_if(FORK_DEBUG, "fork: child will begin executing at {:p} with stack {:p}, kstack {:p}",
child_regs.pc, child_regs.sp(), child_regs.kernel_sp);
#else #else
# error Unknown architecture # error Unknown architecture
#endif #endif