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If there are per-platform differences in which syscalls are supported, we should only try to export implemented ones in libc. Fortunately, syscall maps are run though cpp. This is arguably incomplete as syscall.mk isn't (and can't practically be) supported. Reviewed by: kevans Sponsored by: DARPA, AFRL Pull Request: https://github.com/freebsd/freebsd-src/pull/1575
75 lines
1.9 KiB
Lua
Executable file
75 lines
1.9 KiB
Lua
Executable file
#!/usr/libexec/flua
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--
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-- SPDX-License-Identifier: BSD-2-Clause
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--
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-- Copyright (c) 2024 SRI International
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-- Copyright (c) 2024 Tyler Baxter <agge@FreeBSD.org>
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-- Copyright (c) 2023 Warner Losh <imp@bsdimp.com>
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-- Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.org>
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--
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-- Setup to be a module, or ran as its own script.
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local syscalls_map = {}
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local script = not pcall(debug.getlocal, 4, 1) -- TRUE if script.
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if script then
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-- Add library root to the package path.
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local path = arg[0]:gsub("/[^/]+.lua$", "")
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package.path = package.path .. ";" .. path .. "/../?.lua"
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end
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local FreeBSDSyscall = require("core.freebsd-syscall")
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local generator = require("tools.generator")
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-- File has not been decided yet; config will decide file. Default defined as
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-- /dev/null.
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syscalls_map.file = "/dev/null"
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function syscalls_map.generate(tbl, config, fh)
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-- Grab the master system calls table.
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local s = tbl.syscalls
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-- Bind the generator to the parameter file.
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local gen = generator:new({}, fh)
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-- Write the generated preamble.
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gen:preamble("FreeBSD system call symbols.")
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gen:write(string.format("FBSDprivate_1.0 {\n"))
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for _, v in pairs(s) do
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gen:write(v.prolog)
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if v:native() and not v.type.NODEF and not v.type.NOLIB then
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if v.name ~= "exit" and v.name ~= "vfork" then
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gen:write(string.format("\t_%s;\n", v.name))
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end
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gen:write(string.format("\t__sys_%s;\n", v.name))
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end
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end
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gen:write(tbl.epilog)
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-- End
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gen:write("};\n")
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end
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-- Entry of script:
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if script then
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local config = require("config")
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if #arg < 1 or #arg > 2 then
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error("usage: " .. arg[0] .. " syscall.master")
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end
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local sysfile, configfile = arg[1], arg[2]
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config.merge(configfile)
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config.mergeCompat()
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-- The parsed syscall table.
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local tbl = FreeBSDSyscall:new{sysfile = sysfile, config = config}
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syscalls_map.file = config.libsysmap -- change file here
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syscalls_map.generate(tbl, config, syscalls_map.file)
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end
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-- Return the module.
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return syscalls_map
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