| // Copyright 2017 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| // These get mangled so the raw pointer values don't leak into the heap. |
| #define JB_PC 0 |
| #define JB_SP 1 |
| #define JB_FP 2 |
| #define JB_USP 3 |
| #define JB_MANGLE_COUNT (4 + JB_ARCH_MANGLE_COUNT) |
| |
| #ifdef __x86_64__ |
| |
| // Other callee-saves registers. |
| #define JB_RBX (JB_MANGLE_COUNT + 0) |
| #define JB_R12 (JB_MANGLE_COUNT + 1) |
| #define JB_R13 (JB_MANGLE_COUNT + 2) |
| #define JB_R14 (JB_MANGLE_COUNT + 3) |
| #define JB_R15 (JB_MANGLE_COUNT + 4) |
| #define JB_COUNT (JB_MANGLE_COUNT + 5) |
| |
| #define JB_ARCH_MANGLE_COUNT 0 |
| |
| #elif defined(__aarch64__) |
| |
| // The shadow call stack pointer (x18) is also mangled. |
| #define JB_ARCH_MANGLE_COUNT 1 |
| |
| // Callee-saves registers are [x19,x28] and [d8,d15]. |
| #define JB_X(n) (JB_MANGLE_COUNT + n - 19) |
| #define JB_D(n) (JB_X(29) + n - 8) |
| #define JB_COUNT JB_D(16) |
| |
| #else |
| |
| #error what architecture? |
| |
| #endif |
| |
| #ifndef __ASSEMBLER__ |
| |
| #include <stdint.h> |
| |
| extern struct setjmp_manglers { |
| uintptr_t mangle[JB_MANGLE_COUNT]; |
| } __setjmp_manglers __attribute__((visibility("hidden"))); |
| |
| #endif |
