ed69e8314d
to do this, we need to take code out of cpu.c and helper.c, and also move some prototypes from cpu.h, for code that is needed in tcg/xxx_helper.c, and which in turn is part of the callbacks registered by the class initialization. Therefore, do some shuffling of the parts of cpu.h that are only relevant for tcg/, and put them in tcg/helper-tcg.h For FT0 and similar macros, put them in tcg/fpu-helper.c since they are used only there. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20201212155530.23098-8-cfontana@suse.de> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/*
|
|
* x86 MPX helpers
|
|
*
|
|
* Copyright (c) 2015 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "exec/helper-proto.h"
|
|
#include "exec/cpu_ldst.h"
|
|
#include "exec/exec-all.h"
|
|
#include "helper-tcg.h"
|
|
|
|
|
|
void helper_bndck(CPUX86State *env, uint32_t fail)
|
|
{
|
|
if (unlikely(fail)) {
|
|
env->bndcs_regs.sts = 1;
|
|
raise_exception_ra(env, EXCP05_BOUND, GETPC());
|
|
}
|
|
}
|
|
|
|
static uint64_t lookup_bte64(CPUX86State *env, uint64_t base, uintptr_t ra)
|
|
{
|
|
uint64_t bndcsr, bde, bt;
|
|
|
|
if ((env->hflags & HF_CPL_MASK) == 3) {
|
|
bndcsr = env->bndcs_regs.cfgu;
|
|
} else {
|
|
bndcsr = env->msr_bndcfgs;
|
|
}
|
|
|
|
bde = (extract64(base, 20, 28) << 3) + (extract64(bndcsr, 20, 44) << 12);
|
|
bt = cpu_ldq_data_ra(env, bde, ra);
|
|
if ((bt & 1) == 0) {
|
|
env->bndcs_regs.sts = bde | 2;
|
|
raise_exception_ra(env, EXCP05_BOUND, ra);
|
|
}
|
|
|
|
return (extract64(base, 3, 17) << 5) + (bt & ~7);
|
|
}
|
|
|
|
static uint32_t lookup_bte32(CPUX86State *env, uint32_t base, uintptr_t ra)
|
|
{
|
|
uint32_t bndcsr, bde, bt;
|
|
|
|
if ((env->hflags & HF_CPL_MASK) == 3) {
|
|
bndcsr = env->bndcs_regs.cfgu;
|
|
} else {
|
|
bndcsr = env->msr_bndcfgs;
|
|
}
|
|
|
|
bde = (extract32(base, 12, 20) << 2) + (bndcsr & TARGET_PAGE_MASK);
|
|
bt = cpu_ldl_data_ra(env, bde, ra);
|
|
if ((bt & 1) == 0) {
|
|
env->bndcs_regs.sts = bde | 2;
|
|
raise_exception_ra(env, EXCP05_BOUND, ra);
|
|
}
|
|
|
|
return (extract32(base, 2, 10) << 4) + (bt & ~3);
|
|
}
|
|
|
|
uint64_t helper_bndldx64(CPUX86State *env, target_ulong base, target_ulong ptr)
|
|
{
|
|
uintptr_t ra = GETPC();
|
|
uint64_t bte, lb, ub, pt;
|
|
|
|
bte = lookup_bte64(env, base, ra);
|
|
lb = cpu_ldq_data_ra(env, bte, ra);
|
|
ub = cpu_ldq_data_ra(env, bte + 8, ra);
|
|
pt = cpu_ldq_data_ra(env, bte + 16, ra);
|
|
|
|
if (pt != ptr) {
|
|
lb = ub = 0;
|
|
}
|
|
env->mmx_t0.MMX_Q(0) = ub;
|
|
return lb;
|
|
}
|
|
|
|
uint64_t helper_bndldx32(CPUX86State *env, target_ulong base, target_ulong ptr)
|
|
{
|
|
uintptr_t ra = GETPC();
|
|
uint32_t bte, lb, ub, pt;
|
|
|
|
bte = lookup_bte32(env, base, ra);
|
|
lb = cpu_ldl_data_ra(env, bte, ra);
|
|
ub = cpu_ldl_data_ra(env, bte + 4, ra);
|
|
pt = cpu_ldl_data_ra(env, bte + 8, ra);
|
|
|
|
if (pt != ptr) {
|
|
lb = ub = 0;
|
|
}
|
|
return ((uint64_t)ub << 32) | lb;
|
|
}
|
|
|
|
void helper_bndstx64(CPUX86State *env, target_ulong base, target_ulong ptr,
|
|
uint64_t lb, uint64_t ub)
|
|
{
|
|
uintptr_t ra = GETPC();
|
|
uint64_t bte;
|
|
|
|
bte = lookup_bte64(env, base, ra);
|
|
cpu_stq_data_ra(env, bte, lb, ra);
|
|
cpu_stq_data_ra(env, bte + 8, ub, ra);
|
|
cpu_stq_data_ra(env, bte + 16, ptr, ra);
|
|
}
|
|
|
|
void helper_bndstx32(CPUX86State *env, target_ulong base, target_ulong ptr,
|
|
uint64_t lb, uint64_t ub)
|
|
{
|
|
uintptr_t ra = GETPC();
|
|
uint32_t bte;
|
|
|
|
bte = lookup_bte32(env, base, ra);
|
|
cpu_stl_data_ra(env, bte, lb, ra);
|
|
cpu_stl_data_ra(env, bte + 4, ub, ra);
|
|
cpu_stl_data_ra(env, bte + 8, ptr, ra);
|
|
}
|
|
|
|
void helper_bnd_jmp(CPUX86State *env)
|
|
{
|
|
if (!(env->hflags2 & HF2_MPX_PR_MASK)) {
|
|
memset(env->bnd_regs, 0, sizeof(env->bnd_regs));
|
|
env->hflags &= ~HF_MPX_IU_MASK;
|
|
}
|
|
}
|