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Implementing OS::ArmUsingHardFloat on FreeBSD for ARM.

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Pretty similar than other oses except we check LLVM/clang usage.
Upstreaming local FreeBSD patches.

Change-Id: Ife8447a9ff35e30a92134f65a2d8394d5123d9ab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1910108
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65137}
This commit is contained in:
David Carlier 2019-11-22 16:33:35 +00:00 committed by Commit Bot
parent f046b936f8
commit cb51845b74
2 changed files with 44 additions and 42 deletions
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42
src/base/platform/platform-linux.cc
View File

@ -39,48 +39,6 @@
namespace v8 {
namespace base {
#ifdef __arm__
bool OS::ArmUsingHardFloat() {
// GCC versions 4.6 and above define __ARM_PCS or __ARM_PCS_VFP to specify
// the Floating Point ABI used (PCS stands for Procedure Call Standard).
// We use these as well as a couple of other defines to statically determine
// what FP ABI used.
// GCC versions 4.4 and below don't support hard-fp.
// GCC versions 4.5 may support hard-fp without defining __ARM_PCS or
// __ARM_PCS_VFP.
#define GCC_VERSION \
(__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#if GCC_VERSION >= 40600 && !defined(__clang__)
#if defined(__ARM_PCS_VFP)
return true;
#else
return false;
#endif
#elif GCC_VERSION < 40500 && !defined(__clang__)
return false;
#else
#if defined(__ARM_PCS_VFP)
return true;
#elif defined(__ARM_PCS) || defined(__SOFTFP__) || defined(__SOFTFP) || \
!defined(__VFP_FP__)
return false;
#else
#error \
"Your version of compiler does not report the FP ABI compiled for." \
"Please report it on this issue" \
"http://code.google.com/p/v8/issues/detail?id=2140"
#endif
#endif
#undef GCC_VERSION
}
#endif // def __arm__
TimezoneCache* OS::CreateTimezoneCache() {
return new PosixDefaultTimezoneCache();
}

44
src/base/platform/platform-posix.cc
View File

@ -150,6 +150,50 @@ void* Allocate(void* hint, size_t size, OS::MemoryPermission access) {
} // namespace
#if V8_OS_LINUX || V8_OS_FREEBSD
#ifdef __arm__
bool OS::ArmUsingHardFloat() {
// GCC versions 4.6 and above define __ARM_PCS or __ARM_PCS_VFP to specify
// the Floating Point ABI used (PCS stands for Procedure Call Standard).
// We use these as well as a couple of other defines to statically determine
// what FP ABI used.
// GCC versions 4.4 and below don't support hard-fp.
// GCC versions 4.5 may support hard-fp without defining __ARM_PCS or
// __ARM_PCS_VFP.
#define GCC_VERSION \
(__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#if GCC_VERSION >= 40600 && !defined(__clang__)
#if defined(__ARM_PCS_VFP)
return true;
#else
return false;
#endif
#elif GCC_VERSION < 40500 && !defined(__clang__)
return false;
#else
#if defined(__ARM_PCS_VFP)
return true;
#elif defined(__ARM_PCS) || defined(__SOFTFP__) || defined(__SOFTFP) || \
!defined(__VFP_FP__)
return false;
#else
#error \
"Your version of compiler does not report the FP ABI compiled for." \
"Please report it on this issue" \
"http://code.google.com/p/v8/issues/detail?id=2140"
#endif
#endif
#undef GCC_VERSION
}
#endif // def __arm__
#endif
void OS::Initialize(bool hard_abort, const char* const gc_fake_mmap) {
g_hard_abort = hard_abort;
g_gc_fake_mmap = gc_fake_mmap;