| // 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 |
| |
| #include "stack.h" |
| |
| BootStack boot_stack; |
| |
| #if __has_feature(safe_stack) |
| BootStack boot_unsafe_stack; |
| #endif // __has_feature(safe_stack) |
| |
| #if __has_feature(shadow_call_stack) |
| uintptr_t boot_shadow_call_stack[BOOT_SHADOW_CALL_STACK_SIZE / sizeof(uintptr_t)]; |
| #endif // __has_feature(shadow_call_stack) |
| |
| // This considers the limit to be "on". |
| bool IsOnStack(uintptr_t sp) { |
| const auto base = reinterpret_cast<uintptr_t>(&boot_stack); |
| return base <= sp && sp - base <= sizeof(boot_stack); |
| } |
