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--- third_party/blink/renderer/platform/wtf/stack_util.cc.orig 2022-02-07 13:39:41 UTC
+++ third_party/blink/renderer/platform/wtf/stack_util.cc
@@ -18,6 +18,11 @@
extern "C" void* __libc_stack_end; // NOLINT
#endif
+#if defined(OS_BSD)
+#include <sys/signal.h>
+#include <pthread_np.h>
+#endif
+
namespace WTF {
size_t GetUnderestimatedStackSize() {
@@ -62,6 +67,8 @@ size_t GetUnderestimatedStackSize() {
// low as 512k.
//
return 512 * 1024;
+#elif defined(OS_OPENBSD)
+ return 512 * 1024;
#elif defined(OS_MAC)
// pthread_get_stacksize_np() returns too low a value for the main thread on
// OSX 10.9,
@@ -98,12 +105,18 @@ return Threading::ThreadStackSize();
void* GetStackStart() {
#if defined(__GLIBC__) || defined(OS_ANDROID) || defined(OS_FREEBSD) || \
- defined(OS_FUCHSIA)
+ defined(OS_FUCHSIA) || defined(OS_BSD)
pthread_attr_t attr;
int error;
#if defined(OS_FREEBSD)
pthread_attr_init(&attr);
error = pthread_attr_get_np(pthread_self(), &attr);
+#elif defined(OS_OPENBSD)
+ stack_t ss;
+ void *base;
+ error = pthread_stackseg_np(pthread_self(), &ss);
+ base = (void*)((size_t) ss.ss_sp - ss.ss_size);
+ return reinterpret_cast<uint8_t*>(base) + ss.ss_size;
#else
error = pthread_getattr_np(pthread_self(), &attr);
#endif
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