amd64 linux64: use x86_clear_dbregs()
instead of manually inlining it Reviewed by: jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D29687
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@ -477,27 +477,7 @@ linux_exec_setregs(struct thread *td, struct image_params *imgp,
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regs->tf_gs = _ugssel;
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regs->tf_flags = TF_HASSEGS;
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/*
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* Reset the hardware debug registers if they were in use.
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* They won't have any meaning for the newly exec'd process.
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*/
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if (pcb->pcb_flags & PCB_DBREGS) {
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pcb->pcb_dr0 = 0;
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pcb->pcb_dr1 = 0;
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pcb->pcb_dr2 = 0;
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pcb->pcb_dr3 = 0;
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pcb->pcb_dr6 = 0;
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pcb->pcb_dr7 = 0;
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if (pcb == curpcb) {
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/*
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* Clear the debug registers on the running
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* CPU, otherwise they will end up affecting
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* the next process we switch to.
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*/
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reset_dbregs();
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}
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clear_pcb_flags(pcb, PCB_DBREGS);
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}
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x86_clear_dbregs(pcb);
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/*
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* Drop the FP state if we hold it, so that the process gets a
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