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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2018 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
* under sponsorship from the FreeBSD Foundation.
*
* 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("$FreeBSD$");
#ifdef SAN_NEEDS_INTERCEPTORS
#define SAN_RUNTIME
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/md_var.h>
#include <machine/specialreg.h>
#include <x86/ifunc.h>
int fubyte_nosmap(volatile const void *base);
int fubyte_smap(volatile const void *base);
DEFINE_IFUNC(, int, fubyte, (volatile const void *))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
fubyte_smap : fubyte_nosmap);
}
int fuword16_nosmap(volatile const void *base);
int fuword16_smap(volatile const void *base);
DEFINE_IFUNC(, int, fuword16, (volatile const void *))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
fuword16_smap : fuword16_nosmap);
}
int fueword_nosmap(volatile const void *base, long *val);
int fueword_smap(volatile const void *base, long *val);
DEFINE_IFUNC(, int, fueword, (volatile const void *, long *))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
fueword_smap : fueword_nosmap);
}
DEFINE_IFUNC(, int, fueword64, (volatile const void *, int64_t *))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
fueword_smap : fueword_nosmap);
}
int fueword32_nosmap(volatile const void *base, int32_t *val);
int fueword32_smap(volatile const void *base, int32_t *val);
DEFINE_IFUNC(, int, fueword32, (volatile const void *, int32_t *))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
fueword32_smap : fueword32_nosmap);
}
int subyte_nosmap(volatile void *base, int byte);
int subyte_smap(volatile void *base, int byte);
DEFINE_IFUNC(, int, subyte, (volatile void *, int))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
subyte_smap : subyte_nosmap);
}
int suword16_nosmap(volatile void *base, int word);
int suword16_smap(volatile void *base, int word);
DEFINE_IFUNC(, int, suword16, (volatile void *, int))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
suword16_smap : suword16_nosmap);
}
int suword32_nosmap(volatile void *base, int32_t word);
int suword32_smap(volatile void *base, int32_t word);
DEFINE_IFUNC(, int, suword32, (volatile void *, int32_t))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
suword32_smap : suword32_nosmap);
}
int suword_nosmap(volatile void *base, long word);
int suword_smap(volatile void *base, long word);
DEFINE_IFUNC(, int, suword, (volatile void *, long))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
suword_smap : suword_nosmap);
}
DEFINE_IFUNC(, int, suword64, (volatile void *, int64_t))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
suword_smap : suword_nosmap);
}
int casueword32_nosmap(volatile uint32_t *base, uint32_t oldval,
uint32_t *oldvalp, uint32_t newval);
int casueword32_smap(volatile uint32_t *base, uint32_t oldval,
uint32_t *oldvalp, uint32_t newval);
DEFINE_IFUNC(, int, casueword32, (volatile uint32_t *, uint32_t, uint32_t *,
uint32_t))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
casueword32_smap : casueword32_nosmap);
}
int casueword_nosmap(volatile u_long *p, u_long oldval, u_long *oldvalp,
u_long newval);
int casueword_smap(volatile u_long *p, u_long oldval, u_long *oldvalp,
u_long newval);
DEFINE_IFUNC(, int, casueword, (volatile u_long *, u_long, u_long *, u_long))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
casueword_smap : casueword_nosmap);
}
int copyinstr_nosmap(const void *udaddr, void *kaddr, size_t len,
size_t *lencopied);
int copyinstr_smap(const void *udaddr, void *kaddr, size_t len,
size_t *lencopied);
DEFINE_IFUNC(, int, copyinstr, (const void *, void *, size_t, size_t *))
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
copyinstr_smap : copyinstr_nosmap);
}
int copyin_nosmap_std(const void *udaddr, void *kaddr, size_t len);
int copyin_smap_std(const void *udaddr, void *kaddr, size_t len);
int copyin_nosmap_erms(const void *udaddr, void *kaddr, size_t len);
int copyin_smap_erms(const void *udaddr, void *kaddr, size_t len);
DEFINE_IFUNC(, int, copyin, (const void *, void *, size_t))
{
switch (cpu_stdext_feature & (CPUID_STDEXT_SMAP | CPUID_STDEXT_ERMS)) {
case CPUID_STDEXT_SMAP:
return (copyin_smap_std);
case CPUID_STDEXT_ERMS:
return (copyin_nosmap_erms);
case CPUID_STDEXT_SMAP | CPUID_STDEXT_ERMS:
return (copyin_smap_erms);
default:
return (copyin_nosmap_std);
}
}
int copyout_nosmap_std(const void *kaddr, void *udaddr, size_t len);
int copyout_smap_std(const void *kaddr, void *udaddr, size_t len);
int copyout_nosmap_erms(const void *kaddr, void *udaddr, size_t len);
int copyout_smap_erms(const void *kaddr, void *udaddr, size_t len);
DEFINE_IFUNC(, int, copyout, (const void *, void *, size_t))
{
switch (cpu_stdext_feature & (CPUID_STDEXT_SMAP | CPUID_STDEXT_ERMS)) {
case CPUID_STDEXT_SMAP:
return (copyout_smap_std);
case CPUID_STDEXT_ERMS:
return (copyout_nosmap_erms);
case CPUID_STDEXT_SMAP | CPUID_STDEXT_ERMS:
return (copyout_smap_erms);
default:
return (copyout_nosmap_std);
}
}
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