| // Copyright 2020 The Fuchsia Authors |
| // |
| // Use of this source code is governed by a MIT-style |
| // license that can be found in the LICENSE file or at |
| // https://opensource.org/licenses/MIT |
| |
| /* |
| * Use a pragma to set all objects to hidden, the command-line option does not |
| * apply to externs. |
| */ |
| #pragma GCC visibility push(hidden) |
| |
| #ifndef __clang__ |
| // With GCC, -fasynchronous-unwind-tables emits full .eh_frame and no |
| // .debug_frame. Just -fno-unwind-tables is actually independent and |
| // doesn't negate the default -fasynchronous-unwind-tables. However, |
| // -fno-asynchronous-unwind-tables -fno-unwind-tables not only makes it |
| // emit .debug_frame instead of .eh_frame but also makes it emit partial |
| // (call-site-only) .debug_frame. Since GCC just emits `.cfi_*` asm |
| // directives and doesn't otherwise emit its own `.cfi_sections`, we can |
| // just inject one early here (see kernel/debug-frame.S for where the |
| // corresponding trick is done for assembly files). |
| __asm__(".cfi_sections .debug_frame"); |
| #endif |
