e5a743c4f6
Summary: A set of of linux x86_64 internal syscall helpers have also been added. This change does not try to be perfect with respect to OS and machine abstractions. A TODO note has been added at places where such abstractions would help and make the arrangement scalable and cleaner. Addressing the TODOs and building such abstractions is not in the scope of this change. It is hoped that follow up changes cleaning up the problem areas and addressing the TODOs will better illustrate the need for the changes. This change also does not try to imitate mmap and munmap implementations of other libcs. The idea here is to put in the bare minimum required to obtain a working mmap and munmap, and then add the rest of the functionality on an as needed basis. Reviewers: abrachet, phosek, stanshebs, theraven Subscribers: mgorny, MaskRay, jfb, libc-commits Tags: #libc-project Differential Revision: https://reviews.llvm.org/D71634
136 lines
2.6 KiB
TableGen
136 lines
2.6 KiB
TableGen
include "config/public_api.td"
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include "spec/linux.td"
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include "spec/posix.td"
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include "spec/stdc.td"
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def SizeT : TypeDecl<"size_t"> {
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let Decl = [{
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#define __need_size_t
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#include <stddef.h>
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}];
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}
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def OffT : TypeDecl<"off_t"> {
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let Decl = [{
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#define __need_off_t
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#include <__posix-types.h>
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}];
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}
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def NullMacro : MacroDef<"NULL"> {
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let Defn = [{
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#define __need_NULL
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#include <stddef.h>
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}];
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}
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def ErrnoMacro : MacroDef<"errno"> {
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let Defn = [{
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int *__errno_location();
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#define errno (*__errno_location())
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}];
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}
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def MathAPI : PublicAPI<"math.h"> {
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let Functions = [
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"acos",
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"acosl",
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];
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}
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def StringAPI : PublicAPI<"string.h"> {
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let Functions = [
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"memcpy",
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"memmove",
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"memcmp",
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"memchr",
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"memset",
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"strcpy",
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"strncpy",
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"strcat",
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"strncat",
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"strcmp",
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"strcoll",
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"strncmp",
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"strxfrm",
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"strchr",
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"strcspn",
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"strpbrk",
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"strrchr",
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"strspn",
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"strstr",
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"strtok",
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"strerror",
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"strlen",
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];
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let TypeDeclarations = [
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SizeT,
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];
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let Macros = [
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NullMacro,
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];
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}
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def StdIOAPI : PublicAPI<"stdio.h"> {
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let TypeDeclarations = [
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SizeT,
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];
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let Functions = [
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"snprintf",
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];
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}
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def ErrnoAPI : PublicAPI<"errno.h"> {
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let Macros = [
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ErrnoMacro,
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// We largely depend on linux/errno.h to give us the
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// various error macro definitions. However, some libc
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// implementations have chosen to provide definitions
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// for some of the error macros to account for the ones
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// missing in linux/errno.h. There is no harm in doing
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// the same here if we define the macros only when they
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// are not already defined.
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MacroDefineIfNot<"ENOTSUP", "EOPNOTSUPP">,
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MacroDefineIfNot<"ECANCELED", "125">,
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MacroDefineIfNot<"EOWNERDEAD", "130">,
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MacroDefineIfNot<"ENOTRECOVERABLE", "131">,
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MacroDefineIfNot<"ERFKILL", "132">,
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MacroDefineIfNot<"EHWPOISON", "133">,
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];
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}
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def SysMManAPI : PublicAPI<"sys/mman.h"> {
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let Macros = [
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SimpleMacroDef<"PROT_NONE", "0">,
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SimpleMacroDef<"PROT_READ", "1">,
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SimpleMacroDef<"PROT_WRITE", "2">,
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SimpleMacroDef<"PROT_EXEC", "4">,
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SimpleMacroDef<"MAP_FIXED", "1">,
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SimpleMacroDef<"MAP_PRIVATE", "2">,
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SimpleMacroDef<"MAP_SHARED", "4">,
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SimpleMacroDef<"MAP_FAILED", "((void*)-1)">,
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// TODO: The value of 0x20 is good for x86_64, but has to be extended
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// in some manner to accommodate other machine architectures.
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SimpleMacroDef<"MAP_ANONYMOUS", "0x20">
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// TODO: Add other MAP_* macros used by Linux.
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];
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let TypeDeclarations = [
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SizeT,
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OffT,
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];
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let Functions = [
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"mmap",
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"munmap",
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];
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}
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