| //===-- orc_rt_macho_tlv.x86-64.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 x86_64-only |
| #if defined(__x86_64__) |
| |
| // Save all GRPS except %rsp. |
| // This value is also subtracted from %rsp below, despite the fact that %rbp |
| // has already been pushed, because we need %rsp to stay 16-byte aligned. |
| #define GPR_SAVE_SPACE_SIZE 15 * 8 |
| #define FXSAVE64_SAVE_SPACE_SIZE 512 |
| #define REGISTER_SAVE_SPACE_SIZE \ |
| GPR_SAVE_SPACE_SIZE + FXSAVE64_SAVE_SPACE_SIZE |
| |
| .text |
| |
| // returns address of TLV in %rax, all other registers preserved |
| .globl __orc_rt_sysv_reenter |
| __orc_rt_sysv_reenter: |
| pushq %rbp |
| movq %rsp, %rbp |
| subq $REGISTER_SAVE_SPACE_SIZE, %rsp |
| movq %rax, -8(%rbp) |
| movq %rbx, -16(%rbp) |
| movq %rcx, -24(%rbp) |
| movq %rdx, -32(%rbp) |
| movq %rsi, -40(%rbp) |
| movq %rdi, -48(%rbp) |
| movq %r8, -56(%rbp) |
| movq %r9, -64(%rbp) |
| movq %r10, -72(%rbp) |
| movq %r11, -80(%rbp) |
| movq %r12, -88(%rbp) |
| movq %r13, -96(%rbp) |
| movq %r14, -104(%rbp) |
| movq %r15, -112(%rbp) |
| fxsave64 (%rsp) |
| movq 8(%rbp), %rdi |
| |
| // Load return address and subtract five from it (on the assumption |
| // that it's a call instruction). |
| subq $5, %rdi |
| |
| // 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__) |
| call __orc_rt_resolve |
| #else |
| call ___orc_rt_resolve |
| #endif |
| movq %rax, 8(%rbp) |
| fxrstor64 (%rsp) |
| movq -112(%rbp), %r15 |
| movq -104(%rbp), %r14 |
| movq -96(%rbp), %r13 |
| movq -88(%rbp), %r12 |
| movq -80(%rbp), %r11 |
| movq -72(%rbp), %r10 |
| movq -64(%rbp), %r9 |
| movq -56(%rbp), %r8 |
| movq -48(%rbp), %rdi |
| movq -40(%rbp), %rsi |
| movq -32(%rbp), %rdx |
| movq -24(%rbp), %rcx |
| movq -16(%rbp), %rbx |
| movq -8(%rbp), %rax |
| addq $REGISTER_SAVE_SPACE_SIZE, %rsp |
| popq %rbp |
| ret |
| |
| #endif // defined(__x86_64__) |
