mirror of
https://github.com/opnsense/src.git
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d957343f87
To avoid clobbering of any registers by the trampoline code use Linux way to call signal handlers. I.e., we are out from the kernel right into the signal handler, put return address from the signal handler into the link register. The mysterious NOP is required for some unwinders (e.g. libc++) that unconditionally subtract one from the result of _Unwind_GetIP() in order to identify the calling function. MFC after: 1 week
76 lines
1.2 KiB
ArmAsm
76 lines
1.2 KiB
ArmAsm
/*
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* Linker script for 64-bit vDSO.
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* Copied from Linux kernel arch/arm64/kernel/vdso/vdso.lds.S
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*
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* $FreeBSD$
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*/
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SECTIONS
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{
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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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/DISCARD/ : {
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*(.note.GNU-stack .note.gnu.property)
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}
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.note : { *(.note.*) } :text :note
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. = ALIGN(0x100);
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.text : { *(.text*) } :text =0x90909090
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PROVIDE (__etext = .);
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PROVIDE (_etext = .);
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PROVIDE (etext = .);
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.dynamic : { *(.dynamic) } :text :dynamic
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.rodata : { *(.rodata*) } :text
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.data : {
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*(.data*)
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}
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_end = .;
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PROVIDE(end = .);
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/DISCARD/ : {
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*(.eh_frame .eh_frame_hdr)
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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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}
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/*
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* This controls what symbols we export from the DSO.
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*/
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VERSION
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{
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LINUX_2.6.39 {
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global:
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__kernel_rt_sigreturn;
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__kernel_gettimeofday;
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__kernel_clock_gettime;
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__kernel_clock_getres;
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local: *;
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};
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LINUX_0.0 {
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global:
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linux_platform;
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kern_timekeep_base;
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__user_rt_sigreturn;
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local: *;
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};
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}
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