ClickHouse/utils/memcpy-bench/glibc/sysdep.h

#pragma once

/* Assembler macros for x86-64.
    Copyright (C) 2001-2020 Free Software Foundation, Inc.
    This file is part of the GNU C Library.

    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */

#ifndef _X86_64_SYSDEP_H
#define _X86_64_SYSDEP_H 1

#include "sysdep_x86.h"

#ifdef    __ASSEMBLER__

/* Syntactic details of assembler.  */

/* This macro is for setting proper CFI with DW_CFA_expression describing
    the register as saved relative to %rsp instead of relative to the CFA.
    Expression is DW_OP_drop, DW_OP_breg7 (%rsp is register 7), sleb128 offset
    from %rsp.  */
#define cfi_offset_rel_rsp(regn, off)    .cfi_escape 0x10, regn, 0x4, 0x13, \
                    0x77, off & 0x7F | 0x80, off >> 7

/* If compiled for profiling, call `mcount' at the start of each function.  */
#ifdef    PROF
/* The mcount code relies on a normal frame pointer being on the stack
    to locate our caller, so push one just for its benefit.  */
#define CALL_MCOUNT                                                          \
    pushq %rbp;                                                                \
    cfi_adjust_cfa_offset(8);                                                  \
    movq %rsp, %rbp;                                                           \
    cfi_def_cfa_register(%rbp);                                                \
    call JUMPTARGET(mcount);                                                   \
    popq %rbp;                                                                 \
    cfi_def_cfa(rsp,8);
#else
#define CALL_MCOUNT        /* Do nothing.  */
#endif

#define    PSEUDO(name, syscall_name, args)                      \
lose:                                          \
    jmp JUMPTARGET(syscall_error)                              \
    .globl syscall_error;                                  \
    ENTRY (name)                                      \
    DO_CALL (syscall_name, args);                              \
    jb lose

#undef JUMPTARGET
#ifdef SHARED
# ifdef BIND_NOW
#  define JUMPTARGET(name)    *name##@GOTPCREL(%rip)
# else
#  define JUMPTARGET(name)    name##@PLT
# endif
#else
/* For static archives, branch to target directly.  */
# define JUMPTARGET(name)    name
#endif

/* Long and pointer size in bytes.  */
#define LP_SIZE    8

/* Instruction to operate on long and pointer.  */
#define LP_OP(insn) insn##q

/* Assembler address directive. */
#define ASM_ADDR .quad

/* Registers to hold long and pointer.  */
#define RAX_LP    rax
#define RBP_LP    rbp
#define RBX_LP    rbx
#define RCX_LP    rcx
#define RDI_LP    rdi
#define RDX_LP    rdx
#define RSI_LP    rsi
#define RSP_LP    rsp
#define R8_LP    r8
#define R9_LP    r9
#define R10_LP    r10
#define R11_LP    r11
#define R12_LP    r12
#define R13_LP    r13
#define R14_LP    r14
#define R15_LP    r15

#else    /* __ASSEMBLER__ */

/* Long and pointer size in bytes.  */
#define LP_SIZE "8"

/* Instruction to operate on long and pointer.  */
#define LP_OP(insn) #insn "q"

/* Assembler address directive. */
#define ASM_ADDR ".quad"

/* Registers to hold long and pointer.  */
#define RAX_LP    "rax"
#define RBP_LP    "rbp"
#define RBX_LP    "rbx"
#define RCX_LP    "rcx"
#define RDI_LP    "rdi"
#define RDX_LP    "rdx"
#define RSI_LP    "rsi"
#define RSP_LP    "rsp"
#define R8_LP    "r8"
#define R9_LP    "r9"
#define R10_LP    "r10"
#define R11_LP    "r11"
#define R12_LP    "r12"
#define R13_LP    "r13"
#define R14_LP    "r14"
#define R15_LP    "r15"

#endif    /* __ASSEMBLER__ */

#endif    /* _X86_64_SYSDEP_H */