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Add support for hypervisor check on x86

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Add ficl words for isvirtualized
and move ficl inb and outb words to ficl/x86/sysdep.c
so can be shared by i386 and amd64

Reviewed by:	imp bdrewery
MFC after:	1 week
Sponsored by:	Juniper Networks
Differential Revision:	https://reviews.freebsd.org/D22069
This commit is contained in:
Simon J. Gerraty 2019-10-24 20:02:48 +00:00
parent 53707abd41
commit e9b148a318
9 changed files with 157 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
stand/defs.mk
View File

@ -189,14 +189,15 @@ teken_state.h: ${SYSDIR}/teken/sequences
${SYSDIR}/teken/sequences > teken_state.h
.if !defined(NO_OBJ)
_ILINKS=machine
_ILINKS=include/machine
.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
_ILINKS+=${MACHINE_CPUARCH}
_ILINKS+=include/${MACHINE_CPUARCH}
.endif
.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
_ILINKS+=x86
_ILINKS+=include/x86
.endif
CLEANFILES+=${_ILINKS}
CFLAGS+= -Iinclude
CLEANDIRS+= include
beforedepend: ${_ILINKS}
beforebuild: ${_ILINKS}
@ -211,8 +212,8 @@ ${OBJS}: ${_link}
.NOPATH: ${_ILINKS}
${_ILINKS}:
@case ${.TARGET} in \
${_ILINKS}: .NOMETA
@case ${.TARGET:T} in \
machine) \
if [ ${DO32:U0} -eq 0 ]; then \
path=${SYSDIR}/${MACHINE}/include ; \
@ -222,8 +223,11 @@ ${_ILINKS}:
*) \
path=${SYSDIR}/${.TARGET:T}/include ;; \
esac ; \
case ${.TARGET} in \
*/*) mkdir -p ${.TARGET:H};; \
esac ; \
path=`(cd $$path && /bin/pwd)` ; \
${ECHO} ${.TARGET:T} "->" $$path ; \
ln -fhs $$path ${.TARGET:T}
${ECHO} ${.TARGET} "->" $$path ; \
ln -fhs $$path ${.TARGET}
.endif # !NO_OBJ
.endif # __BOOT_DEFS_MK__

2
stand/ficl/amd64/sysdep.c
View File

@ -17,6 +17,8 @@
#endif
#include "ficl.h"
#include "../x86/sysdep.c"
/*
******************* FreeBSD P O R T B E G I N S H E R E ******************** Michael Smith
*/

52
stand/ficl/i386/sysdep.c
View File

@ -14,12 +14,11 @@
#include <stdlib.h>
#else
#include <stand.h>
#ifdef __i386__
#include <machine/cpufunc.h>
#endif
#endif
#include "ficl.h"
#include "../x86/sysdep.c"
/*
******************* FreeBSD P O R T B E G I N S H E R E ******************** Michael Smith
*/
@ -80,53 +79,6 @@ void ficlFree (void *p)
free(p);
}
#ifndef TESTMAIN
/*
* outb ( port# c -- )
* Store a byte to I/O port number port#
*/
void
ficlOutb(FICL_VM *pVM)
{
u_char c;
uint32_t port;
port=stackPopUNS(pVM->pStack);
c=(u_char)stackPopINT(pVM->pStack);
outb(port,c);
}
/*
* inb ( port# -- c )
* Fetch a byte from I/O port number port#
*/
void
ficlInb(FICL_VM *pVM)
{
u_char c;
uint32_t port;
port=stackPopUNS(pVM->pStack);
c=inb(port);
stackPushINT(pVM->pStack,c);
}
/*
* Glue function to add the appropriate forth words to access x86 special cpu
* functionality.
*/
static void ficlCompileCpufunc(FICL_SYSTEM *pSys)
{
FICL_DICT *dp = pSys->dp;
assert (dp);
dictAppendWord(dp, "outb", ficlOutb, FW_DEFAULT);
dictAppendWord(dp, "inb", ficlInb, FW_DEFAULT);
}
FICL_COMPILE_SET(ficlCompileCpufunc);
#endif
/*
** Stub function for dictionary access control - does nothing

29
stand/ficl/loader.c
View File

@ -287,6 +287,32 @@ ficlFindfile(FICL_VM *pVM)
return;
}
#ifndef TESTMAIN
/* isvirtualized? - Return whether the loader runs under a
* hypervisor.
*
* isvirtualized? ( -- flag )
*/
static void
ficlIsvirtualizedQ(FICL_VM *pVM)
{
FICL_INT flag;
const char *hv;
#if FICL_ROBUST > 1
vmCheckStack(pVM, 0, 1);
#endif
hv = (archsw.arch_hypervisor != NULL)
? (*archsw.arch_hypervisor)()
: NULL;
flag = (hv != NULL) ? FICL_TRUE : FICL_FALSE;
stackPushINT(pVM->pStack, flag);
}
#endif /* ndef TESTMAIN */
void
ficlCcall(FICL_VM *pVM)
{
@ -840,6 +866,9 @@ void ficlCompilePlatform(FICL_SYSTEM *pSys)
dictAppendWord(dp, "ccall", ficlCcall, FW_DEFAULT);
dictAppendWord(dp, "uuid-from-string", ficlUuidFromString, FW_DEFAULT);
dictAppendWord(dp, "uuid-to-string", ficlUuidToString, FW_DEFAULT);
#ifndef TESTMAIN
dictAppendWord(dp, "isvirtualized?",ficlIsvirtualizedQ, FW_DEFAULT);
#endif
SET_FOREACH(fnpp, Xficl_compile_set)
(*fnpp)(pSys);

51
stand/ficl/x86/sysdep.c Normal file
View File

@ -0,0 +1,51 @@
/* $FreeBSD$ */
#ifndef TESTMAIN
#include <machine/cpufunc.h>
/*
* outb ( port# c -- )
* Store a byte to I/O port number port#
*/
void
ficlOutb(FICL_VM *pVM)
{
u_char c;
uint32_t port;
port=stackPopUNS(pVM->pStack);
c=(u_char)stackPopINT(pVM->pStack);
outb(port,c);
}
/*
* inb ( port# -- c )
* Fetch a byte from I/O port number port#
*/
void
ficlInb(FICL_VM *pVM)
{
u_char c;
uint32_t port;
port=stackPopUNS(pVM->pStack);
c=inb(port);
stackPushINT(pVM->pStack,c);
}
/*
* Glue function to add the appropriate forth words to access x86 special cpu
* functionality.
*/
static void ficlCompileCpufunc(FICL_SYSTEM *pSys)
{
FICL_DICT *dp = pSys->dp;
assert (dp);
dictAppendWord(dp, "outb", ficlOutb, FW_DEFAULT);
dictAppendWord(dp, "inb", ficlInb, FW_DEFAULT);
}
FICL_COMPILE_SET(ficlCompileCpufunc);
#endif

1
stand/i386/loader/main.c
View File

@ -167,6 +167,7 @@ main(void)
archsw.arch_readin = i386_readin;
archsw.arch_isainb = isa_inb;
archsw.arch_isaoutb = isa_outb;
archsw.arch_hypervisor = x86_hypervisor;
#ifdef LOADER_ZFS_SUPPORT
archsw.arch_zfs_probe = i386_zfs_probe;

5
stand/libsa/Makefile
View File

@ -71,6 +71,11 @@ SRCS+= divmoddi4.c divmodsi4.c divdi3.c divsi3.c moddi3.c modsi3.c
SRCS+= udivmoddi4.c udivmodsi4.c udivdi3.c udivsi3.c umoddi3.c umodsi3.c
SRCS+= ashldi3.c ashrdi3.c lshrdi3.c
.if ${MACHINE_CPUARCH:Namd64:Ni386} == ""
.PATH: ${SASRC}/x86
SRCS+= hypervisor.c
.endif
.if ${MACHINE_CPUARCH} == "powerpc"
SRCS+= syncicache.c
.endif

2
stand/libsa/stand.h
View File

@ -434,6 +434,8 @@ void *Reallocf(void *, size_t, const char *, int);
void Free(void *, const char *, int);
extern void mallocstats(void);
const char *x86_hypervisor(void);
#ifdef DEBUG_MALLOC
#define malloc(x) Malloc(x, __FILE__, __LINE__)
#define memalign(x, y) Memalign(x, y, __FILE__, __LINE__)

52
stand/libsa/x86/hypervisor.c Normal file
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@ -0,0 +1,52 @@
/*-
* Copyright (c) 2013-2019 Juniper Networks, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stand.h>
#include <machine/cpufunc.h>
#include <machine/specialreg.h>
const char *
x86_hypervisor(void)
{
static union {
struct {
u_int high;
char name[13];
} hv;
u_int regs[4];
} u;
/* Return NULL when no hypervisor is present. */
do_cpuid(1, u.regs);
if ((u.regs[2] & CPUID2_HV) == 0)
return (NULL);
/* Return the hypervisor's identification. */
do_cpuid(0x40000000, u.regs);
return (u.hv.name);
}