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9ded074e87
* main.lua replicates the functionality of makesyscalls.lua
* Individual files are generated by their associated module
* Modules can be called as standalone scripts to generate a specific
file
* Data and procedures are performed by objects instead of procedual code
* Bitmasks are replaced by declarative types
* Temporary files are no longer produced, writing is stored in memory
* Comments provide explanation to functions and semantics
Google Summer of Code 2024 Final Work Product
Co-authored-by: Warner Losh <imp@freebsd.org>
Co-authored-by: Kyle Evans <kevans@freebsd.org>
Co-authored-by: Brooks Davis <brooks@freebsd.org>
Sponsored by: Google (GSoC 24)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1362
Signed-off-by: agge3 <sterspark@gmail.com>
109 lines
2.6 KiB
Lua
Executable file
109 lines
2.6 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 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 = {}
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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.file = "/dev/null"
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function syscalls.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("System call names.")
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gen:write(string.format("const char *%s[] = {\n", config.namesname))
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for _, v in pairs(s) do
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--print("num " .. v.num .. " name " .. v.name)
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local c = v:compatLevel()
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if v:native() then
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gen:write(string.format([[
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"%s", /* %d = %s */
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]],
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v.name, v.num, v.name))
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elseif c >= 3 then
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-- Lookup the info for this specific compat option.
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local flag, descr
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for _, opt in pairs(config.compat_options) do
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if opt.compatlevel == c then
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flag = opt.flag
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flag = flag:lower()
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descr = opt.descr
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break
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end
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end
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gen:write(string.format([[
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"%s.%s", /* %d = %s %s */
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]],
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flag, v.name, v.num, descr, v.name))
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elseif v.type.RESERVED then
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gen:write(string.format([[
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"#%d", /* %d = reserved for local use */
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]],
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v.num, v.num))
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elseif v.type.UNIMPL then
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gen:write(string.format([[
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"#%d", /* %d = %s */
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]],
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v.num, v.num, v.alias))
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elseif v.type.OBSOL then
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gen:write(string.format([[
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"obs_%s", /* %d = obsolete %s */
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]],
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v.name, v.num, v.name))
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end
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end
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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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config.mergeCapability()
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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.file = config.sysnames -- change file here
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syscalls.generate(tbl, config, syscalls.file)
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end
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-- Return the module.
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return syscalls
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