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Import the "gerbert" kernel I worked on earlier this year.
It's a lot crappier than I remembered it. It's gonna need a lot of work.
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42
Kernel/Userspace.cpp
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42
Kernel/Userspace.cpp
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#include "Userspace.h"
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#include "Syscall.h"
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#include "StdLib.h"
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namespace Userspace {
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int open(const char* path)
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{
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return DO_SYSCALL_A2(Syscall::PosixOpen, path, strlen(path));
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}
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int close(int fd)
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{
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return DO_SYSCALL_A1(Syscall::PosixClose, fd);
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}
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int read(int fd, void* outbuf, size_t nread)
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{
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return DO_SYSCALL_A3(Syscall::PosixRead, fd, outbuf, nread);
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}
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int seek(int fd, int offset)
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{
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return DO_SYSCALL_A2(Syscall::PosixRead, fd, offset);
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}
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int kill(pid_t pid, int sig)
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{
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return DO_SYSCALL_A2(Syscall::PosixKill, pid, sig);
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}
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uid_t getuid()
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{
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return DO_SYSCALL_A0(Syscall::PosixGetuid);
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}
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void sleep(DWORD ticks)
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{
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DO_SYSCALL_A1(Syscall::Sleep, ticks);
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}
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}
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