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dce6098b22
We test 20 million times of getcpu(), the real syscall version take 25 seconds, while the vsyscall version take only 2.4 seconds. Signed-off-by: Rui Wang <wangrui@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
74 lines
1.4 KiB
ArmAsm
74 lines
1.4 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Author: Huacai Chen <chenhuacai@loongson.cn>
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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OUTPUT_FORMAT("elf64-loongarch", "elf64-loongarch", "elf64-loongarch")
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OUTPUT_ARCH(loongarch)
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SECTIONS
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{
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PROVIDE(_start = .);
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. = SIZEOF_HEADERS;
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.hash : { *(.hash) } :text
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.gnu.hash : { *(.gnu.hash) }
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.dynsym : { *(.dynsym) }
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.dynstr : { *(.dynstr) }
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.gnu.version : { *(.gnu.version) }
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.gnu.version_d : { *(.gnu.version_d) }
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.gnu.version_r : { *(.gnu.version_r) }
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.note : { *(.note.*) } :text :note
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.text : { *(.text*) } :text
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PROVIDE (__etext = .);
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PROVIDE (_etext = .);
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PROVIDE (etext = .);
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.eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
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.eh_frame : { KEEP (*(.eh_frame)) } :text
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.dynamic : { *(.dynamic) } :text :dynamic
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.rodata : { *(.rodata*) } :text
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_end = .;
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PROVIDE(end = .);
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/DISCARD/ : {
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*(.gnu.attributes)
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*(.note.GNU-stack)
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*(.data .data.* .gnu.linkonce.d.* .sdata*)
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*(.bss .sbss .dynbss .dynsbss)
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}
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}
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PHDRS
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{
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text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
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dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
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note PT_NOTE FLAGS(4); /* PF_R */
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eh_frame_hdr PT_GNU_EH_FRAME;
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}
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VERSION
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{
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LINUX_5.10 {
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global:
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__vdso_getcpu;
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__vdso_clock_getres;
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__vdso_clock_gettime;
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__vdso_gettimeofday;
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__vdso_rt_sigreturn;
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local: *;
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};
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}
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/*
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* Make the sigreturn code visible to the kernel.
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*/
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VDSO_sigreturn = __vdso_rt_sigreturn;
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