| //===-- sysv_reenter.arm64.s ------------------------------------*- ASM -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of the ORC runtime support library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // The content of this file is arm64-only |
| #if defined(__arm64__) || defined(__aarch64__) |
| |
| .text |
| |
| // Saves GPRs, calls __orc_rt_resolve |
| .globl __orc_rt_sysv_reenter |
| __orc_rt_sysv_reenter: |
| // Save register state, set up new stack frome. |
| stp x27, x28, [sp, #-16]! |
| stp x25, x26, [sp, #-16]! |
| stp x23, x24, [sp, #-16]! |
| stp x21, x22, [sp, #-16]! |
| stp x19, x20, [sp, #-16]! |
| stp x14, x15, [sp, #-16]! |
| stp x12, x13, [sp, #-16]! |
| stp x10, x11, [sp, #-16]! |
| stp x8, x9, [sp, #-16]! |
| stp x6, x7, [sp, #-16]! |
| stp x4, x5, [sp, #-16]! |
| stp x2, x3, [sp, #-16]! |
| stp x0, x1, [sp, #-16]! |
| stp q30, q31, [sp, #-32]! |
| stp q28, q29, [sp, #-32]! |
| stp q26, q27, [sp, #-32]! |
| stp q24, q25, [sp, #-32]! |
| stp q22, q23, [sp, #-32]! |
| stp q20, q21, [sp, #-32]! |
| stp q18, q19, [sp, #-32]! |
| stp q16, q17, [sp, #-32]! |
| stp q14, q15, [sp, #-32]! |
| stp q12, q13, [sp, #-32]! |
| stp q10, q11, [sp, #-32]! |
| stp q8, q9, [sp, #-32]! |
| stp q6, q7, [sp, #-32]! |
| stp q4, q5, [sp, #-32]! |
| stp q2, q3, [sp, #-32]! |
| stp q0, q1, [sp, #-32]! |
| |
| // Look up the return address and subtract 8 from it (on the assumption |
| // that it's a standard arm64 reentry trampoline) to get back the |
| // trampoline's address. |
| sub x0, x30, #8 |
| |
| // Call __orc_rt_resolve to look up the implementation corresponding to |
| // the calling stub, then store this in x17 (which we'll return to |
| // below). |
| #if !defined(__APPLE__) |
| bl __orc_rt_resolve |
| #else |
| bl ___orc_rt_resolve |
| #endif |
| mov x17, x0 |
| |
| // Restore the register state. |
| ldp q0, q1, [sp], #32 |
| ldp q2, q3, [sp], #32 |
| ldp q4, q5, [sp], #32 |
| ldp q6, q7, [sp], #32 |
| ldp q8, q9, [sp], #32 |
| ldp q10, q11, [sp], #32 |
| ldp q12, q13, [sp], #32 |
| ldp q14, q15, [sp], #32 |
| ldp q16, q17, [sp], #32 |
| ldp q18, q19, [sp], #32 |
| ldp q20, q21, [sp], #32 |
| ldp q22, q23, [sp], #32 |
| ldp q24, q25, [sp], #32 |
| ldp q26, q27, [sp], #32 |
| ldp q28, q29, [sp], #32 |
| ldp q30, q31, [sp], #32 |
| ldp x0, x1, [sp], #16 |
| ldp x2, x3, [sp], #16 |
| ldp x4, x5, [sp], #16 |
| ldp x6, x7, [sp], #16 |
| ldp x8, x9, [sp], #16 |
| ldp x10, x11, [sp], #16 |
| ldp x12, x13, [sp], #16 |
| ldp x14, x15, [sp], #16 |
| ldp x19, x20, [sp], #16 |
| ldp x21, x22, [sp], #16 |
| ldp x23, x24, [sp], #16 |
| ldp x25, x26, [sp], #16 |
| ldp x27, x28, [sp], #16 |
| ldp x29, x30, [sp], #16 |
| |
| // Return to the function implementation (rather than the stub). |
| ret x17 |
| |
| #endif // defined(__arm64__) || defined(__aarch64__) |
