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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>
111 lines
2.7 KiB
Lua
Executable file
111 lines
2.7 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 libsys_h = {}
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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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local util = require("tools.util")
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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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libsys_h.file = "/dev/null"
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function libsys_h.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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local print_decl = function (sc)
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return sc:native() and not sc.type.NODEF and
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not sc.type.SYSMUX and sc.name ~= "yield"
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end
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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("Public system call stubs provided by libsys.\n" ..
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"\n" ..
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"Do not use directly, include <libsys.h> instead.")
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gen:write(string.format([[
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#ifndef __LIBSYS_H_
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#define __LIBSYS_H_
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#include <sys/_cpuset.h>
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#include <sys/_domainset.h>
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#include <sys/_ffcounter.h>
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#include <sys/_semaphore.h>
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#include <sys/_sigaltstack.h>
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#include <machine/ucontext.h> /* for mcontext_t */
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#include <sys/_ucontext.h>
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#include <sys/wait.h>
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]]))
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for name, _ in util.pairsByKeys(tbl.structs) do
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gen:write(string.format("struct %s;\n", name))
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end
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gen:write("union semun;\n")
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gen:write("\n__BEGIN_DECLS\n")
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for _, v in pairs(s) do
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if print_decl(v) then
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gen:write(string.format(
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"typedef %s (__sys_%s_t)(%s);\n",
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v.ret, v.name, v.argstr_type))
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end
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end
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gen:write("\n")
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for _, v in pairs(s) do
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if print_decl(v) then
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gen:write(string.format("%s __sys_%s(%s);\n",
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v.ret, v.name, v.argstr_type_var))
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end
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end
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gen:write("__END_DECLS\n")
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-- End
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gen:write("\n#endif /* __LIBSYS_H_ */\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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libsys_h.file = config.libsys_h -- change file here
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libsys_h.generate(tbl, config, libsys_h.file)
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end
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-- Return the module.
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return libsys_h
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