// SPDX-License-Identifier: GPL-2.0-or-later
// Linux x86_64 syscall number -> SchOS syscall number translation.
// Enabled per process by sys_enable_linux_abi (see kernel/sys/sys_compat.c).
//
// This file used to be the second half of a two-place registration scheme: a
// hand-written `#define LINUX_foo N` for every Linux number, plus a hand-written
// map entry pointing it at SYS_foo. Adding a syscall meant three edits across
// two files, and forgetting this one left the syscall unreachable from every
// musl-linked program while looking perfectly registered in table.inc.
//
// The map is now generated from kernel/sys/table.inc, which carries the Linux
// number alongside the native one. There is nothing to hand-edit here.

#include "core/types.h"
#include "core/syscall.h"

#define LINUX_NSYSCALL NSYSCALLS

// Index: Linux x86_64 syscall number. Value: SchOS SYS_* number, or 0 for
// "not implemented" (syscall() then returns -ENOSYS).
//
// Syscalls declared NO_LINUX in table.inc all land on the single scratch index
// NO_LINUX. They overwrite each other there, which is harmless: no real Linux
// syscall uses that number, so the slot is never dispatched.
int linux_syscall_map[LINUX_NSYSCALL] = {
#define SYSCALL(nr, lnr, name)   [lnr] = SYS_##name,
#define SYSCALL_ALIAS(lnr, name) [lnr] = SYS_##name,
#include "table.inc"
#undef SYSCALL
#undef SYSCALL_ALIAS
};

int linux_syscall_map_size = LINUX_NSYSCALL;