Reland `sigsetjmp` patches with build fixes.
We wrap every target replying on the epilogue library into conditional
checks.
---------
Co-authored-by: Petr Hosek <phosek@google.com>
Previously the assert macro took one argument named "e", but this led to
possible errors if the caller had commas in their input. C23 changed the
definition of assert to use `__VA_ARGS__` to ensure comma cases are
handled properly. This patch doesn't introduce the enforcement function
mentioned in the standard update, though that may be done in a followup.
Fixes#136184
This PR implements the following 8 functions along with the tests.
```c++
int idivr(fract, fract);
long int idivlr(long fract, long fract);
int idivk(accum, accum);
long int idivlk(long accum, long accum);
unsigned int idivur(unsigned fract, unsigned fract);
unsigned long int idivulr(unsigned long fract, unsigned long fract);
unsigned int idivuk(unsigned accum, unsigned accum);
unsigned long int idivulk(unsigned long accum, unsigned long accum);
```
ref: https://www.iso.org/standard/51126.htmlFixes#129125
---------
Signed-off-by: krishna2803 <kpandey81930@gmail.com>
This reverts commit f07511a0e0d2ac9bee9ae12a9ad68e279e352634.
This reverts commit 5bb4cf9d9189c41de50adffd960eb2188140eb9c.
It caused a CMake configuration issue.
The main issue was that the kernel expected `suseconds_t` to be 64 bits
but ours was 32. This caused inconsistent failures since all valid
`suseconds_t` values are less than 1000000 (1 million), and some
configurations caused `struct timeval` to be padded to 128 bits.
Also: forgot to use TEST_FILE instead of FILE_PATH in some places.
This PR implements the following macros for `sched.h`:
- `CPU_ZERO`
- `CPU_ISSET`
- `CPU_SET`
Fixes#124642
---------
Signed-off-by: krishna2803 <kpandey81930@gmail.com>
This fleshes out the <link.h> a little more, including the
`struct dl_phdr_info` type and declaring the dl_iterate_phdr
function. There is only a no-op implementation without tests, as
for the existing dlfcn functions.
Initial UEFI OS target support after the headers. This just defines
enough that stuff might try and compile. Test with:
```
$ cmake -S llvm -B build -G Ninja -DLLVM_RUNTIME_TARGETS=x86_64-unknown-uefi-llvm -DRUNTIMES_x86_64-unknown-uefi-llvm_LLVM_ENABLE_RUNTIMES=libc -DRUNTIMES_x86_64-unknown-uefi-llvm_LLVM_LIBC_FULL_BUILD=true -DCMAKE_C_COMPILER_WORKS=true -DCMAKE_CXX_COMPILER_WORKS=true -DLLVM_ENABLE_PROJECTS="clang;lld" -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_LIBCXX=true -DLLVM_HOST_TRIPLE=aarch64-unknown-linux-gnu -DLLVM_DEFAULT_TARGET_TRIPLE=x86_64-unknown-uefi-llvm -DCMAKE_INSTALL_LIBDIR=build/target/lib
$ ninja -C build
```
Originated from #120687
This PR simply adds the necessary headers for UEFI which defines all the
necessary types. This PR unlocks the ability to work on other PR's for
UEFI support.
These declarations were missing in the generated header. Make sure to
add them, otherwise <stdbit.h> inclusion fails, since the subsequently
included "stdbit-macros.h" expects these declarations to be present.
Co-authored-by: Alexey Samsonov <samsonov@google.com>
Macros starting with alphabetic characters such as "LLVM" are in
the application name space and cannot be defined or used by a
conforming implementation's headers. This fixes the headers that
are entirely generated, and the __llvm-libc-common.h header to
use a conforming macro name for the header guard. That is, it
starts with "_LLVM_LIBC_" instead of "LLVM_LIBC_", as identifiers
starting with an underscore followed by a capital letter are in
the name space reserved for the implementation.
The remaining headers either will be fixed implicitly by removal
of their custom template files, or will need to be fixed by hand.
This updates the generated stdlib.h and malloc.h headers to
include the subsets of extenion functions declared by glibc that
are also supported by Scudo and that use only simple types.
Scudo's extensions not declared by glibc are omitted. glibc's
extensions not implemented by Scudo are omitted. The mallinfo
and mallinfo2 functions are omitted (at least for now) since they
need struct definitions for their return types.
This uses the new merge_yaml_files feature in hdrgen to share the
source of truth for the malloc suite of functions declared in
both stdlib.h and in malloc.h (without either header including
the other). It also modernizes the malloc.yaml definition a bit,
including dropping the custom template malloc.h.def file in favor
of using the explicit macros list to generate the includes.
Implements the posix-specified strftime conversions for the default
locale, along with comprehensive unit tests. This reuses a lot of design
from printf, as well as the printf writer.
Roughly based on #111305, but with major rewrites.
