Differential D30541 Diff 91171 sys/amd64/linux/linux_sysvec.c

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sys/amd64/linux/linux_sysvec.c

Show First 20 Lines • Show All 604 Lines • ▼ Show 20 Lines	linux_rt_sendsig(sig_t catcher, ksiginfo_t ksi, sigset_t mask)
code = ksi->ksi_code;		code = ksi->ksi_code;
mtx_assert(&psp->ps_mtx, MA_OWNED);		mtx_assert(&psp->ps_mtx, MA_OWNED);
regs = td->td_frame;		regs = td->td_frame;
oonstack = sigonstack(regs->tf_rsp);		oonstack = sigonstack(regs->tf_rsp);

LINUX_CTR4(rt_sendsig, "%p, %d, %p, %u",		LINUX_CTR4(rt_sendsig, "%p, %d, %p, %u",
catcher, sig, mask, code);		catcher, sig, mask, code);

/* Allocate space for the signal handler context. */
if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
SIGISMEMBER(psp->ps_sigonstack, sig)) {
sp = (caddr_t)td->td_sigstk.ss_sp + td->td_sigstk.ss_size -
sizeof(struct l_rt_sigframe);
} else
sp = (caddr_t)regs->tf_rsp - sizeof(struct l_rt_sigframe) - 128;
/* Align to 16 bytes. */
sfp = (struct l_rt_sigframe *)((unsigned long)sp & ~0xFul);
mtx_unlock(&psp->ps_mtx);

/* Translate the signal. */		/* Translate the signal. */
sig = bsd_to_linux_signal(sig);		sig = bsd_to_linux_signal(sig);

/* Save user context. */		/* Save user context. */
bzero(&sf, sizeof(sf));		bzero(&sf, sizeof(sf));
bsd_to_linux_sigset(mask, &sf.sf_sc.uc_sigmask);		bsd_to_linux_sigset(mask, &sf.sf_sc.uc_sigmask);
bsd_to_linux_sigset(mask, &sf.sf_sc.uc_mcontext.sc_mask);		bsd_to_linux_sigset(mask, &sf.sf_sc.uc_mcontext.sc_mask);

sf.sf_sc.uc_stack.ss_sp = PTROUT(td->td_sigstk.ss_sp);		sf.sf_sc.uc_stack.ss_sp = PTROUT(td->td_sigstk.ss_sp);
sf.sf_sc.uc_stack.ss_size = td->td_sigstk.ss_size;		sf.sf_sc.uc_stack.ss_size = td->td_sigstk.ss_size;
sf.sf_sc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK)		sf.sf_sc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK)
? ((oonstack) ? LINUX_SS_ONSTACK : 0) : LINUX_SS_DISABLE;		? ((oonstack) ? LINUX_SS_ONSTACK : 0) : LINUX_SS_DISABLE;
PROC_UNLOCK(p);

sf.sf_sc.uc_mcontext.sc_rdi = regs->tf_rdi;		sf.sf_sc.uc_mcontext.sc_rdi = regs->tf_rdi;
sf.sf_sc.uc_mcontext.sc_rsi = regs->tf_rsi;		sf.sf_sc.uc_mcontext.sc_rsi = regs->tf_rsi;
sf.sf_sc.uc_mcontext.sc_rdx = regs->tf_rdx;		sf.sf_sc.uc_mcontext.sc_rdx = regs->tf_rdx;
sf.sf_sc.uc_mcontext.sc_rbp = regs->tf_rbp;		sf.sf_sc.uc_mcontext.sc_rbp = regs->tf_rbp;
sf.sf_sc.uc_mcontext.sc_rbx = regs->tf_rbx;		sf.sf_sc.uc_mcontext.sc_rbx = regs->tf_rbx;
sf.sf_sc.uc_mcontext.sc_rcx = regs->tf_rcx;		sf.sf_sc.uc_mcontext.sc_rcx = regs->tf_rcx;
sf.sf_sc.uc_mcontext.sc_rax = regs->tf_rax;		sf.sf_sc.uc_mcontext.sc_rax = regs->tf_rax;
sf.sf_sc.uc_mcontext.sc_rip = regs->tf_rip;		sf.sf_sc.uc_mcontext.sc_rip = regs->tf_rip;
sf.sf_sc.uc_mcontext.sc_rsp = regs->tf_rsp;		sf.sf_sc.uc_mcontext.sc_rsp = regs->tf_rsp;
sf.sf_sc.uc_mcontext.sc_r8 = regs->tf_r8;		sf.sf_sc.uc_mcontext.sc_r8 = regs->tf_r8;
sf.sf_sc.uc_mcontext.sc_r9 = regs->tf_r9;		sf.sf_sc.uc_mcontext.sc_r9 = regs->tf_r9;
sf.sf_sc.uc_mcontext.sc_r10 = regs->tf_r10;		sf.sf_sc.uc_mcontext.sc_r10 = regs->tf_r10;
sf.sf_sc.uc_mcontext.sc_r11 = regs->tf_r11;		sf.sf_sc.uc_mcontext.sc_r11 = regs->tf_r11;
sf.sf_sc.uc_mcontext.sc_r12 = regs->tf_r12;		sf.sf_sc.uc_mcontext.sc_r12 = regs->tf_r12;
sf.sf_sc.uc_mcontext.sc_r13 = regs->tf_r13;		sf.sf_sc.uc_mcontext.sc_r13 = regs->tf_r13;
sf.sf_sc.uc_mcontext.sc_r14 = regs->tf_r14;		sf.sf_sc.uc_mcontext.sc_r14 = regs->tf_r14;
sf.sf_sc.uc_mcontext.sc_r15 = regs->tf_r15;		sf.sf_sc.uc_mcontext.sc_r15 = regs->tf_r15;
sf.sf_sc.uc_mcontext.sc_cs = regs->tf_cs;		sf.sf_sc.uc_mcontext.sc_cs = regs->tf_cs;
sf.sf_sc.uc_mcontext.sc_rflags = regs->tf_rflags;		sf.sf_sc.uc_mcontext.sc_rflags = regs->tf_rflags;
sf.sf_sc.uc_mcontext.sc_err = regs->tf_err;		sf.sf_sc.uc_mcontext.sc_err = regs->tf_err;
sf.sf_sc.uc_mcontext.sc_trapno = bsd_to_linux_trapcode(code);		sf.sf_sc.uc_mcontext.sc_trapno = bsd_to_linux_trapcode(code);
sf.sf_sc.uc_mcontext.sc_cr2 = (register_t)ksi->ksi_addr;		sf.sf_sc.uc_mcontext.sc_cr2 = (register_t)ksi->ksi_addr;

		/* Allocate space for the signal handler context. */
		if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
		SIGISMEMBER(psp->ps_sigonstack, sig)) {
		sp = (caddr_t)td->td_sigstk.ss_sp + td->td_sigstk.ss_size -
		sizeof(struct l_rt_sigframe);
		} else
		sp = (caddr_t)regs->tf_rsp - sizeof(struct l_rt_sigframe) - 128;
		/* Align to 16 bytes. */
		sfp = (struct l_rt_sigframe *)((unsigned long)sp & ~0xFul);

/* Build the argument list for the signal handler. */		/* Build the argument list for the signal handler. */
regs->tf_rdi = sig; /* arg 1 in %rdi */		regs->tf_rdi = sig; /* arg 1 in %rdi */
regs->tf_rax = 0;		regs->tf_rax = 0;
regs->tf_rsi = (register_t)&sfp->sf_si; /* arg 2 in %rsi */		regs->tf_rsi = (register_t)&sfp->sf_si; /* arg 2 in %rsi */
regs->tf_rdx = (register_t)&sfp->sf_sc; /* arg 3 in %rdx */		regs->tf_rdx = (register_t)&sfp->sf_sc; /* arg 3 in %rdx */

sf.sf_handler = catcher;
/* Fill in POSIX parts. */		/* Fill in POSIX parts. */
siginfo_to_lsiginfo(&ksi->ksi_info, &sf.sf_si, sig);		siginfo_to_lsiginfo(&ksi->ksi_info, &sf.sf_si, sig);
		sf.sf_handler = catcher;

		mtx_unlock(&psp->ps_mtx);
		PROC_UNLOCK(p);

/* Copy the sigframe out to the user's stack. */		/* Copy the sigframe out to the user's stack. */
if (copyout(&sf, sfp, sizeof(*sfp)) != 0) {		if (copyout(&sf, sfp, sizeof(*sfp)) != 0) {
PROC_LOCK(p);		PROC_LOCK(p);
sigexit(td, SIGILL);		sigexit(td, SIGILL);
}		}

regs->tf_rsp = (long)sfp;		regs->tf_rsp = (long)sfp;
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