mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-26 20:55:35 +03:00
fd694e8672
This commit makes it possible to build AK and most of Lagom for iOS, based on the work for the Ladybird build demoed on discord: https://discord.com/channels/830522505605283862/830525031720943627/1211987732646068314
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2020, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Assertions.h>
|
|
#include <AK/Platform.h>
|
|
#include <AK/StackInfo.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#ifdef AK_OS_SERENITY
|
|
# include <serenity.h>
|
|
#elif defined(AK_OS_LINUX) || defined(AK_LIBC_GLIBC) || defined(AK_OS_MACOS) || defined(AK_OS_IOS) || defined(AK_OS_NETBSD) || defined(AK_OS_SOLARIS) || defined(AK_OS_HAIKU)
|
|
# include <pthread.h>
|
|
#elif defined(AK_OS_FREEBSD) || defined(AK_OS_OPENBSD)
|
|
# include <pthread.h>
|
|
# include <pthread_np.h>
|
|
#elif defined(AK_OS_WINDOWS)
|
|
# include <Windows.h>
|
|
// NOTE: Prevent clang-format from re-ordering this header order
|
|
# include <Processthreadsapi.h>
|
|
#endif
|
|
|
|
namespace AK {
|
|
|
|
StackInfo::StackInfo()
|
|
{
|
|
#ifdef AK_OS_SERENITY
|
|
if (get_stack_bounds(&m_base, &m_size) < 0) {
|
|
perror("get_stack_bounds");
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
#elif defined(AK_OS_LINUX) or defined(AK_LIBC_GLIBC) or defined(AK_OS_FREEBSD) or defined(AK_OS_NETBSD) or defined(AK_OS_SOLARIS) or defined(AK_OS_HAIKU)
|
|
int rc;
|
|
pthread_attr_t attr;
|
|
pthread_attr_init(&attr);
|
|
|
|
# if defined(AK_OS_LINUX) or defined(AK_LIBC_GLIBC) or defined(AK_OS_HAIKU)
|
|
if ((rc = pthread_getattr_np(pthread_self(), &attr)) != 0) {
|
|
fprintf(stderr, "pthread_getattr_np: %s\n", strerror(rc));
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
# else
|
|
if ((rc = pthread_attr_get_np(pthread_self(), &attr)) != 0) {
|
|
fprintf(stderr, "pthread_attr_get_np: %s\n", strerror(rc));
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
# endif
|
|
|
|
if ((rc = pthread_attr_getstack(&attr, (void**)&m_base, &m_size)) != 0) {
|
|
fprintf(stderr, "pthread_attr_getstack: %s\n", strerror(rc));
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
pthread_attr_destroy(&attr);
|
|
#elif defined(AK_OS_MACOS) || defined(AK_OS_IOS)
|
|
// NOTE: !! On MacOS, pthread_get_stackaddr_np gives the TOP of the stack, not the bottom!
|
|
FlatPtr top_of_stack = (FlatPtr)pthread_get_stackaddr_np(pthread_self());
|
|
m_size = (size_t)pthread_get_stacksize_np(pthread_self());
|
|
// https://github.com/rust-lang/rust/issues/43347#issuecomment-316783599
|
|
// https://developer.apple.com/library/archive/qa/qa1419/_index.html
|
|
//
|
|
// MacOS seems inconsistent on what stack size is given for the main thread.
|
|
// According to the Apple docs, default for main thread is 8MB, and default for
|
|
// other threads is 512KB
|
|
constexpr size_t eight_megabytes = 0x800000;
|
|
if (pthread_main_np() == 1 && m_size < eight_megabytes) {
|
|
// Assume no one messed with stack size linker options for the main thread,
|
|
// and just set it to 8MB.
|
|
m_size = eight_megabytes;
|
|
}
|
|
m_base = top_of_stack - m_size;
|
|
#elif defined(AK_OS_OPENBSD)
|
|
int rc;
|
|
stack_t thread_stack;
|
|
if ((rc = pthread_stackseg_np(pthread_self(), &thread_stack)) != 0) {
|
|
fprintf(stderr, "pthread_stackseg_np: %s\n", strerror(rc));
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
FlatPtr top_of_stack = (FlatPtr)thread_stack.ss_sp;
|
|
m_size = (size_t)thread_stack.ss_size;
|
|
m_base = top_of_stack - m_size;
|
|
#elif defined(AK_OS_WINDOWS)
|
|
ULONG_PTR low_limit = 0;
|
|
ULONG_PTR high_limit = 0;
|
|
GetCurrentThreadStackLimits(&low_limit, &high_limit);
|
|
|
|
m_base = static_cast<FlatPtr>(low_limit);
|
|
m_size = static_cast<size_t>(high_limit - low_limit);
|
|
#else
|
|
# pragma message "StackInfo not supported on this platform! Recursion checks and stack scans may not work properly"
|
|
m_size = (size_t)~0;
|
|
m_base = 0;
|
|
#endif
|
|
|
|
m_top = m_base + m_size;
|
|
}
|
|
|
|
}
|