437c43c1cb
to determine the kernel version (this saves one uname call). Temporarily disable the export of a note.Linux section until I figured out how to change the kernel version in the note.Linux on the fly. Differential Revision: https://reviews.freebsd.org/D1081 Reviewed by: trasz
77 lines
1.4 KiB
ArmAsm
77 lines
1.4 KiB
ArmAsm
/* $FreeBSD$ */
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#include "linux_assym.h" /* system definitions */
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#include <machine/asmacros.h> /* miscellaneous asm macros */
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#include <amd64/linux/linux_syscall.h> /* system call numbers */
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.data
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.globl linux_platform
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linux_platform:
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.asciz "x86_64"
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.text
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/*
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* To avoid excess stack frame the signal trampoline code emulates
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* the 'call' instruction.
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*/
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NON_GPROF_ENTRY(linux_rt_sigcode)
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movq %rsp, %rbx /* preserve sigframe */
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call .getip
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.getip:
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popq %rax
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add $.startrtsigcode-.getip, %rax /* ret address */
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pushq %rax
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jmp *LINUX_RT_SIGF_HANDLER(%rbx)
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.startrtsigcode:
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movq $LINUX_SYS_linux_rt_sigreturn,%rax /* linux_rt_sigreturn() */
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syscall /* enter kernel with args */
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hlt
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0: jmp 0b
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NON_GPROF_ENTRY(__vdso_clock_gettime)
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movq $LINUX_SYS_linux_clock_gettime,%rax
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syscall
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ret
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.weak clock_gettime
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.set clock_gettime, __vdso_clock_gettime
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NON_GPROF_ENTRY(__vdso_time)
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movq $LINUX_SYS_linux_time,%rax
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syscall
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ret
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.weak time
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.set time, __vdso_time
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NON_GPROF_ENTRY(__vdso_gettimeofday)
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movq $LINUX_SYS_gettimeofday,%rax
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syscall
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ret
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.weak gettimeofday
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.set gettimeofday, __vdso_gettimeofday
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NON_GPROF_ENTRY(__vdso_getcpu)
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movq $-38,%rax /* not implemented */
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ret
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.weak getcpu
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.set getcpu, __vdso_getcpu
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#if 0
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.section .note.Linux, "a",@note
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.long 2f - 1f /* namesz */
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.balign 4
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.long 4f - 3f /* descsz */
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.long 0
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1:
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.asciz "Linux"
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2:
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.balign 4
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3:
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.long LINUX_VERSION_CODE
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4:
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.balign 4
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.previous
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#endif
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