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1//===-- orc_rt_macho_tlv.x86-64.s -------------------------------*- ASM -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file is a part of the ORC runtime support library.10//11//===----------------------------------------------------------------------===//12 13// The content of this file is x86_64-only14#if defined(__x86_64__)15.att_syntax16 17// Save all GRPS except %rsp.18// This value is also subtracted from %rsp below, despite the fact that %rbp19// has already been pushed, because we need %rsp to stay 16-byte aligned.20#define GPR_SAVE_SPACE_SIZE 15 * 821#define FXSAVE64_SAVE_SPACE_SIZE 51222#define REGISTER_SAVE_SPACE_SIZE \23 GPR_SAVE_SPACE_SIZE + FXSAVE64_SAVE_SPACE_SIZE24 25 .text26 27 // returns address of TLV in %rax, all other registers preserved28 .globl __orc_rt_sysv_reenter29__orc_rt_sysv_reenter:30 pushq %rbp31 movq %rsp, %rbp32 subq $REGISTER_SAVE_SPACE_SIZE, %rsp33 movq %rax, -8(%rbp)34 movq %rbx, -16(%rbp)35 movq %rcx, -24(%rbp)36 movq %rdx, -32(%rbp)37 movq %rsi, -40(%rbp)38 movq %rdi, -48(%rbp)39 movq %r8, -56(%rbp)40 movq %r9, -64(%rbp)41 movq %r10, -72(%rbp)42 movq %r11, -80(%rbp)43 movq %r12, -88(%rbp)44 movq %r13, -96(%rbp)45 movq %r14, -104(%rbp)46 movq %r15, -112(%rbp)47 fxsave64 (%rsp)48 movq 8(%rbp), %rdi49 50 // Load return address and subtract five from it (on the assumption51 // that it's a call instruction).52 subq $5, %rdi53 54 // Call __orc_rt_resolve to look up the implementation corresponding to55 // the calling stub, then store this in x17 (which we'll return to56 // below).57#if !defined(__APPLE__)58 call __orc_rt_resolve59#else60 call ___orc_rt_resolve61#endif62 movq %rax, 8(%rbp)63 fxrstor64 (%rsp)64 movq -112(%rbp), %r1565 movq -104(%rbp), %r1466 movq -96(%rbp), %r1367 movq -88(%rbp), %r1268 movq -80(%rbp), %r1169 movq -72(%rbp), %r1070 movq -64(%rbp), %r971 movq -56(%rbp), %r872 movq -48(%rbp), %rdi73 movq -40(%rbp), %rsi74 movq -32(%rbp), %rdx75 movq -24(%rbp), %rcx76 movq -16(%rbp), %rbx77 movq -8(%rbp), %rax78 addq $REGISTER_SAVE_SPACE_SIZE, %rsp79 popq %rbp80 ret81 82#endif // defined(__x86_64__)83