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izaakschroederizaakschroeder
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[libc] Add link.h and elf.h 
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14 files changed

+189
-1
lines changed

14 files changed

+189
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lines changed

‎libc/config/linux/aarch64/entrypoints.txt‎

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@@ -18,6 +18,7 @@ set(TARGET_LIBC_ENTRYPOINTS
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libc.src.ctype.toupper
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# dlfcn.h entrypoints
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libc.src.dlfcn.dladdr
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libc.src.dlfcn.dlclose
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libc.src.dlfcn.dlerror
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libc.src.dlfcn.dlopen
@@ -32,6 +33,9 @@ set(TARGET_LIBC_ENTRYPOINTS
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libc.src.fcntl.open
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libc.src.fcntl.openat
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# link.h entrypoints
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libc.src.link.dl_iterate_phdr
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# sched.h entrypoints
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libc.src.sched.sched_get_priority_max
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libc.src.sched.sched_get_priority_min

‎libc/config/linux/api.td‎

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@@ -308,3 +308,16 @@ def SearchAPI : PublicAPI<"search.h"> {
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def SysStatvfsAPI : PublicAPI<"sys/statvfs.h"> {
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let Types = ["fsblkcnt_t", "fsfilcnt_t", "struct statvfs"];
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}
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def LinkAPI : PublicAPI<"link.h"> {
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let Types = [
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"struct dl_phdr_info",
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"__dl_iterate_phdr_callback_t"
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];
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}
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def DlfcnAPI : PublicAPI<"dlfcn.h"> {
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let Types = [
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"Dl_info"
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];
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}

‎libc/config/linux/x86_64/entrypoints.txt‎

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@@ -18,6 +18,7 @@ set(TARGET_LIBC_ENTRYPOINTS
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libc.src.ctype.toupper
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# dlfcn.h entrypoints
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libc.src.dlfcn.dladdr
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libc.src.dlfcn.dlclose
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libc.src.dlfcn.dlerror
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libc.src.dlfcn.dlopen
@@ -32,6 +33,9 @@ set(TARGET_LIBC_ENTRYPOINTS
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libc.src.fcntl.open
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libc.src.fcntl.openat
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# link.h entrypoints
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libc.src.link.dl_iterate_phdr
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# sched.h entrypoints
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libc.src.sched.sched_get_priority_max
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libc.src.sched.sched_get_priority_min

‎libc/include/elf.h.def‎

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@@ -0,0 +1,14 @@
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//===-- C standard library header elf.h -----------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_ELF_H
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#define LLVM_LIBC_ELF_H
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#include "llvm-libc-macros/elf-macros.h"
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#endif // LLVM_LIBC_ELF_H

‎libc/include/link.h.def‎

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@@ -0,0 +1,16 @@
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//===-- C standard library header link.h ----------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_LINK_H
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#define LLVM_LIBC_LINK_H
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#include "llvm-libc-macros/link-macros.h"
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%%public_api()
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#endif // LLVM_LIBC_LINK_H

‎libc/spec/linux.td‎

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@@ -3,6 +3,9 @@ def StructEpollEventPtr : PtrType<StructEpollEvent>;
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def StructEpollData : NamedType<"struct epoll_data">;
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def StructDlPhdrInfo : NamedType<"struct dl_phdr_info">;
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def DlIteratePhdrCallback : NamedType<"__dl_iterate_phdr_callback_t">;
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def Linux : StandardSpec<"Linux"> {
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HeaderSpec Errno = HeaderSpec<
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"errno.h",
@@ -264,8 +267,35 @@ def Linux : StandardSpec<"Linux"> {
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]
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>;
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HeaderSpec Link = HeaderSpec<
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"link.h",
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[], // Macros
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[StructDlPhdrInfo, DlIteratePhdrCallback], // Types
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[], // Enumerations
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[
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FunctionSpec<
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"dl_iterate_phdr",
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RetValSpec<IntType>,
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[
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ArgSpec<DlIteratePhdrCallback>,
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ArgSpec<VoidPtr>
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]
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>,
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] // Functions
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>;
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HeaderSpec Elf = HeaderSpec<
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"elf.h",
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[], // Macros
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[], // Types
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[], // Enumerations
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[] // Functions
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>;
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let Headers = [
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Elf,
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Errno,
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Link,
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SysEpoll,
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SysMMan,
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SysPrctl,

‎libc/spec/posix.td‎

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@@ -21,6 +21,9 @@ def PThreadOnceT : NamedType<"pthread_once_t">;
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def PThreadOnceTPtr : PtrType<PThreadOnceT>;
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def PThreadOnceCallback : NamedType<"__pthread_once_func_t">;
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def DlInfo : NamedType<"Dl_info">;
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def DlInfoPtr : PtrType<DlInfo>;
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def InoT : NamedType<"ino_t">;
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def UidT : NamedType<"uid_t">;
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def GidT : NamedType<"gid_t">;
@@ -230,9 +233,14 @@ def POSIX : StandardSpec<"POSIX"> {
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Macro<"RTLD_GLOBAL">,
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Macro<"RTLD_LOCAL">,
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],
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[], // Types
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[DlInfo], // Types
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[], // Enumerations
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[
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FunctionSpec<
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"dladdr",
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RetValSpec<IntType>,
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[ArgSpec<ConstVoidPtr>, ArgSpec<DlInfoPtr>]
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>,
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FunctionSpec<
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"dlclose",
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RetValSpec<IntType>,

‎libc/src/CMakeLists.txt‎

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@@ -5,6 +5,7 @@ add_subdirectory(dlfcn)
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add_subdirectory(errno)
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add_subdirectory(fenv)
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add_subdirectory(inttypes)
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add_subdirectory(link)
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add_subdirectory(math)
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add_subdirectory(stdbit)
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add_subdirectory(stdfix)

‎libc/src/dlfcn/CMakeLists.txt‎

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@@ -1,3 +1,14 @@
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add_entrypoint_object(
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dladdr
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SRCS
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dladdr.cpp
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HDRS
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dladdr.h
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DEPENDS
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libc.include.dlfcn
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libc.src.errno.errno
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)
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add_entrypoint_object(
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dlclose
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SRCS

‎libc/src/dlfcn/dladdr.cpp‎

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@@ -0,0 +1,18 @@
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//===-- Implementation of dladdr -----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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9+
#include "dladdr.h"
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#include "src/__support/common.h"
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namespace LIBC_NAMESPACE {
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// TODO(@izaakschroeder): https://github.com/llvm/llvm-project/issues/97929
16+
LLVM_LIBC_FUNCTION(int, dladdr, (const void *, Dl_info *)) { return 0; }
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} // namespace LIBC_NAMESPACE

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