13941 intel code and headers should not look ia32 specific

Reviewed by: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Patrick Mooney <pmooney@pfmooney.com>
Approved by: Garret D'Amore <garrett@damore.org>

1 files changed, 0 insertions, 379 deletions

diff --git a/usr/src/uts/intel/ia32/syscall/getcontext.c b/usr/src/uts/intel/ia32/syscall/getcontext.c
deleted file mode 100644
index d5dfd5a9cd..0000000000
--- a/usr/src/uts/intel/ia32/syscall/getcontext.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License (the "License").
- * You may not use this file except in compliance with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-
-/*
- * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
-/*	  All Rights Reserved  	*/
-
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/vmparam.h>
-#include <sys/systm.h>
-#include <sys/signal.h>
-#include <sys/stack.h>
-#include <sys/regset.h>
-#include <sys/privregs.h>
-#include <sys/frame.h>
-#include <sys/proc.h>
-#include <sys/brand.h>
-#include <sys/psw.h>
-#include <sys/ucontext.h>
-#include <sys/asm_linkage.h>
-#include <sys/errno.h>
-#include <sys/archsystm.h>
-#include <sys/schedctl.h>
-#include <sys/debug.h>
-#include <sys/sysmacros.h>
-
-/*
- * Save user context.
- */
-void
-savecontext(ucontext_t *ucp, const k_sigset_t *mask)
-{
-	proc_t *p = ttoproc(curthread);
-	klwp_t *lwp = ttolwp(curthread);
-	struct regs *rp = lwptoregs(lwp);
-
-	/*
-	 * We unconditionally assign to every field through the end
-	 * of the gregs, but we need to bzero() everything -after- that
-	 * to avoid having any kernel stack garbage escape to userland.
-	 */
-	bzero(&ucp->uc_mcontext.fpregs, sizeof (ucontext_t) -
-	    offsetof(ucontext_t, uc_mcontext.fpregs));
-
-	ucp->uc_flags = UC_ALL;
-	ucp->uc_link = (struct ucontext *)lwp->lwp_oldcontext;
-
-	/*
-	 * Try to copyin() the ustack if one is registered. If the stack
-	 * has zero size, this indicates that stack bounds checking has
-	 * been disabled for this LWP. If stack bounds checking is disabled
-	 * or the copyin() fails, we fall back to the legacy behavior.
-	 */
-	if (lwp->lwp_ustack == (uintptr_t)NULL ||
-	    copyin((void *)lwp->lwp_ustack, &ucp->uc_stack,
-	    sizeof (ucp->uc_stack)) != 0 ||
-	    ucp->uc_stack.ss_size == 0) {
-
-		if (lwp->lwp_sigaltstack.ss_flags == SS_ONSTACK) {
-			ucp->uc_stack = lwp->lwp_sigaltstack;
-		} else {
-			ucp->uc_stack.ss_sp = p->p_usrstack - p->p_stksize;
-			ucp->uc_stack.ss_size = p->p_stksize;
-			ucp->uc_stack.ss_flags = 0;
-		}
-	}
-
-	/*
-	 * If either the trace flag or REQUEST_STEP is set,
-	 * arrange for single-stepping and turn off the trace flag.
-	 */
-	if ((rp->r_ps & PS_T) || (lwp->lwp_pcb.pcb_flags & REQUEST_STEP)) {
-		/*
-		 * Clear PS_T so that saved user context won't have trace
-		 * flag set.
-		 */
-		rp->r_ps &= ~PS_T;
-
-		if (!(lwp->lwp_pcb.pcb_flags & REQUEST_NOSTEP)) {
-			lwp->lwp_pcb.pcb_flags |= DEBUG_PENDING;
-			/*
-			 * trap() always checks DEBUG_PENDING before
-			 * checking for any pending signal. This at times
-			 * can potentially lead to DEBUG_PENDING not being
-			 * honoured. (for eg: the lwp is stopped by
-			 * stop_on_fault() called from trap(), after being
-			 * awakened it might see a pending signal and call
-			 * savecontext(), however on the way back to userland
-			 * there is no place it can be detected). Hence in
-			 * anticipation of such occassions, set AST flag for
-			 * the thread which will make the thread take an
-			 * excursion through trap() where it will be handled
-			 * appropriately.
-			 */
-			aston(curthread);
-		}
-	}
-
-	getgregs(lwp, ucp->uc_mcontext.gregs);
-	if (lwp->lwp_pcb.pcb_fpu.fpu_flags & FPU_EN)
-		getfpregs(lwp, &ucp->uc_mcontext.fpregs);
-	else
-		ucp->uc_flags &= ~UC_FPU;
-
-	sigktou(mask, &ucp->uc_sigmask);
-}
-
-/*
- * Restore user context.
- */
-void
-restorecontext(ucontext_t *ucp)
-{
-	kthread_t *t = curthread;
-	klwp_t *lwp = ttolwp(t);
-
-	lwp->lwp_oldcontext = (uintptr_t)ucp->uc_link;
-
-	if (ucp->uc_flags & UC_STACK) {
-		if (ucp->uc_stack.ss_flags == SS_ONSTACK)
-			lwp->lwp_sigaltstack = ucp->uc_stack;
-		else
-			lwp->lwp_sigaltstack.ss_flags &= ~SS_ONSTACK;
-	}
-
-	if (ucp->uc_flags & UC_CPU) {
-		/*
-		 * If the trace flag is set, mark the lwp to take a
-		 * single-step trap on return to user level (below).
-		 * The x86 lcall interface and sysenter has already done this,
-		 * and turned off the flag, but amd64 syscall interface has not.
-		 */
-		if (lwptoregs(lwp)->r_ps & PS_T)
-			lwp->lwp_pcb.pcb_flags |= DEBUG_PENDING;
-		setgregs(lwp, ucp->uc_mcontext.gregs);
-		lwp->lwp_eosys = JUSTRETURN;
-		t->t_post_sys = 1;
-		aston(curthread);
-	}
-
-	if (ucp->uc_flags & UC_FPU)
-		setfpregs(lwp, &ucp->uc_mcontext.fpregs);
-
-	if (ucp->uc_flags & UC_SIGMASK) {
-		/*
-		 * We don't need to acquire p->p_lock here;
-		 * we are manipulating thread-private data.
-		 */
-		schedctl_finish_sigblock(t);
-		sigutok(&ucp->uc_sigmask, &t->t_hold);
-		if (sigcheck(ttoproc(t), t))
-			t->t_sig_check = 1;
-	}
-}
-
-
-int
-getsetcontext(int flag, void *arg)
-{
-	ucontext_t uc;
-	ucontext_t *ucp;
-	klwp_t *lwp = ttolwp(curthread);
-	stack_t dummy_stk;
-
-	/*
-	 * In future releases, when the ucontext structure grows,
-	 * getcontext should be modified to only return the fields
-	 * specified in the uc_flags.  That way, the structure can grow
-	 * and still be binary compatible will all .o's which will only
-	 * have old fields defined in uc_flags
-	 */
-
-	switch (flag) {
-	default:
-		return (set_errno(EINVAL));
-
-	case GETCONTEXT:
-		schedctl_finish_sigblock(curthread);
-		savecontext(&uc, &curthread->t_hold);
-		if (uc.uc_flags & UC_SIGMASK)
-			SIGSET_NATIVE_TO_BRAND(&uc.uc_sigmask);
-		if (copyout(&uc, arg, sizeof (uc)))
-			return (set_errno(EFAULT));
-		return (0);
-
-	case SETCONTEXT:
-		ucp = arg;
-		if (ucp == NULL)
-			exit(CLD_EXITED, 0);
-		/*
-		 * Don't copyin filler or floating state unless we need it.
-		 * The ucontext_t struct and fields are specified in the ABI.
-		 */
-		if (copyin(ucp, &uc, sizeof (ucontext_t) -
-		    sizeof (uc.uc_filler) -
-		    sizeof (uc.uc_mcontext.fpregs))) {
-			return (set_errno(EFAULT));
-		}
-		if (uc.uc_flags & UC_SIGMASK)
-			SIGSET_BRAND_TO_NATIVE(&uc.uc_sigmask);
-
-		if ((uc.uc_flags & UC_FPU) &&
-		    copyin(&ucp->uc_mcontext.fpregs, &uc.uc_mcontext.fpregs,
-		    sizeof (uc.uc_mcontext.fpregs))) {
-			return (set_errno(EFAULT));
-		}
-
-		restorecontext(&uc);
-
-		if ((uc.uc_flags & UC_STACK) && (lwp->lwp_ustack != 0))
-			(void) copyout(&uc.uc_stack, (stack_t *)lwp->lwp_ustack,
-			    sizeof (uc.uc_stack));
-		return (0);
-
-	case GETUSTACK:
-		if (copyout(&lwp->lwp_ustack, arg, sizeof (caddr_t)))
-			return (set_errno(EFAULT));
-		return (0);
-
-	case SETUSTACK:
-		if (copyin(arg, &dummy_stk, sizeof (dummy_stk)))
-			return (set_errno(EFAULT));
-		lwp->lwp_ustack = (uintptr_t)arg;
-		return (0);
-	}
-}
-
-#ifdef _SYSCALL32_IMPL
-
-/*
- * Save user context for 32-bit processes.
- */
-void
-savecontext32(ucontext32_t *ucp, const k_sigset_t *mask)
-{
-	proc_t *p = ttoproc(curthread);
-	klwp_t *lwp = ttolwp(curthread);
-	struct regs *rp = lwptoregs(lwp);
-
-	bzero(&ucp->uc_mcontext.fpregs, sizeof (ucontext32_t) -
-	    offsetof(ucontext32_t, uc_mcontext.fpregs));
-
-	ucp->uc_flags = UC_ALL;
-	ucp->uc_link = (caddr32_t)lwp->lwp_oldcontext;
-
-	if (lwp->lwp_ustack == (uintptr_t)NULL ||
-	    copyin((void *)lwp->lwp_ustack, &ucp->uc_stack,
-	    sizeof (ucp->uc_stack)) != 0 ||
-	    ucp->uc_stack.ss_size == 0) {
-
-		if (lwp->lwp_sigaltstack.ss_flags == SS_ONSTACK) {
-			ucp->uc_stack.ss_sp =
-			    (caddr32_t)(uintptr_t)lwp->lwp_sigaltstack.ss_sp;
-			ucp->uc_stack.ss_size =
-			    (size32_t)lwp->lwp_sigaltstack.ss_size;
-			ucp->uc_stack.ss_flags = SS_ONSTACK;
-		} else {
-			ucp->uc_stack.ss_sp = (caddr32_t)(uintptr_t)
-			    (p->p_usrstack - p->p_stksize);
-			ucp->uc_stack.ss_size = (size32_t)p->p_stksize;
-			ucp->uc_stack.ss_flags = 0;
-		}
-	}
-
-	/*
-	 * If either the trace flag or REQUEST_STEP is set, arrange
-	 * for single-stepping and turn off the trace flag.
-	 */
-	if ((rp->r_ps & PS_T) || (lwp->lwp_pcb.pcb_flags & REQUEST_STEP)) {
-		/*
-		 * Clear PS_T so that saved user context won't have trace
-		 * flag set.
-		 */
-		rp->r_ps &= ~PS_T;
-
-		if (!(lwp->lwp_pcb.pcb_flags & REQUEST_NOSTEP)) {
-			lwp->lwp_pcb.pcb_flags |= DEBUG_PENDING;
-			/*
-			 * See comments in savecontext().
-			 */
-			aston(curthread);
-		}
-	}
-
-	getgregs32(lwp, ucp->uc_mcontext.gregs);
-	if (lwp->lwp_pcb.pcb_fpu.fpu_flags & FPU_EN)
-		getfpregs32(lwp, &ucp->uc_mcontext.fpregs);
-	else
-		ucp->uc_flags &= ~UC_FPU;
-
-	sigktou(mask, &ucp->uc_sigmask);
-}
-
-int
-getsetcontext32(int flag, void *arg)
-{
-	ucontext32_t uc;
-	ucontext_t ucnat;
-	ucontext32_t *ucp;
-	klwp_t *lwp = ttolwp(curthread);
-	caddr32_t ustack32;
-	stack32_t dummy_stk32;
-
-	switch (flag) {
-	default:
-		return (set_errno(EINVAL));
-
-	case GETCONTEXT:
-		schedctl_finish_sigblock(curthread);
-		savecontext32(&uc, &curthread->t_hold);
-		if (uc.uc_flags & UC_SIGMASK)
-			SIGSET_NATIVE_TO_BRAND(&uc.uc_sigmask);
-		if (copyout(&uc, arg, sizeof (uc)))
-			return (set_errno(EFAULT));
-		return (0);
-
-	case SETCONTEXT:
-		ucp = arg;
-		if (ucp == NULL)
-			exit(CLD_EXITED, 0);
-		if (copyin(ucp, &uc, sizeof (uc) -
-		    sizeof (uc.uc_filler) -
-		    sizeof (uc.uc_mcontext.fpregs))) {
-			return (set_errno(EFAULT));
-		}
-		if (uc.uc_flags & UC_SIGMASK)
-			SIGSET_BRAND_TO_NATIVE(&uc.uc_sigmask);
-		if ((uc.uc_flags & UC_FPU) &&
-		    copyin(&ucp->uc_mcontext.fpregs, &uc.uc_mcontext.fpregs,
-		    sizeof (uc.uc_mcontext.fpregs))) {
-			return (set_errno(EFAULT));
-		}
-
-		ucontext_32ton(&uc, &ucnat);
-		restorecontext(&ucnat);
-
-		if ((uc.uc_flags & UC_STACK) && (lwp->lwp_ustack != 0))
-			(void) copyout(&uc.uc_stack,
-			    (stack32_t *)lwp->lwp_ustack, sizeof (uc.uc_stack));
-		return (0);
-
-	case GETUSTACK:
-		ustack32 = (caddr32_t)lwp->lwp_ustack;
-		if (copyout(&ustack32, arg, sizeof (ustack32)))
-			return (set_errno(EFAULT));
-		return (0);
-
-	case SETUSTACK:
-		if (copyin(arg, &dummy_stk32, sizeof (dummy_stk32)))
-			return (set_errno(EFAULT));
-		lwp->lwp_ustack = (uintptr_t)arg;
-		return (0);
-	}
-}
-
-#endif	/* _SYSCALL32_IMPL */