1da389c5db
Since we *might* have user emulation with softmmu,
replace the system emulation check by !user emulation one.
(target/ was cleaned from invalid CONFIG_SOFTMMU uses at
commit cab35c73be, but these files were merged few days
after, thus missed the cleanup.)
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004082239.27251-1-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
149 lines
4.0 KiB
C
149 lines
4.0 KiB
C
/*
|
|
* x86 misc helpers
|
|
*
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
*
|
|
* 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 "qemu/log.h"
|
|
#include "cpu.h"
|
|
#include "exec/helper-proto.h"
|
|
#include "exec/exec-all.h"
|
|
#include "helper-tcg.h"
|
|
|
|
/*
|
|
* NOTE: the translator must set DisasContext.cc_op to CC_OP_EFLAGS
|
|
* after generating a call to a helper that uses this.
|
|
*/
|
|
void cpu_load_eflags(CPUX86State *env, int eflags, int update_mask)
|
|
{
|
|
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
|
|
CC_OP = CC_OP_EFLAGS;
|
|
env->df = 1 - (2 * ((eflags >> 10) & 1));
|
|
env->eflags = (env->eflags & ~update_mask) |
|
|
(eflags & update_mask) | 0x2;
|
|
}
|
|
|
|
void helper_into(CPUX86State *env, int next_eip_addend)
|
|
{
|
|
int eflags;
|
|
|
|
eflags = cpu_cc_compute_all(env, CC_OP);
|
|
if (eflags & CC_O) {
|
|
raise_interrupt(env, EXCP04_INTO, 1, 0, next_eip_addend);
|
|
}
|
|
}
|
|
|
|
void helper_cpuid(CPUX86State *env)
|
|
{
|
|
uint32_t eax, ebx, ecx, edx;
|
|
|
|
cpu_svm_check_intercept_param(env, SVM_EXIT_CPUID, 0, GETPC());
|
|
|
|
cpu_x86_cpuid(env, (uint32_t)env->regs[R_EAX], (uint32_t)env->regs[R_ECX],
|
|
&eax, &ebx, &ecx, &edx);
|
|
env->regs[R_EAX] = eax;
|
|
env->regs[R_EBX] = ebx;
|
|
env->regs[R_ECX] = ecx;
|
|
env->regs[R_EDX] = edx;
|
|
}
|
|
|
|
void helper_rdtsc(CPUX86State *env)
|
|
{
|
|
uint64_t val;
|
|
|
|
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
|
|
raise_exception_ra(env, EXCP0D_GPF, GETPC());
|
|
}
|
|
cpu_svm_check_intercept_param(env, SVM_EXIT_RDTSC, 0, GETPC());
|
|
|
|
val = cpu_get_tsc(env) + env->tsc_offset;
|
|
env->regs[R_EAX] = (uint32_t)(val);
|
|
env->regs[R_EDX] = (uint32_t)(val >> 32);
|
|
}
|
|
|
|
G_NORETURN void helper_rdpmc(CPUX86State *env)
|
|
{
|
|
if (((env->cr[4] & CR4_PCE_MASK) == 0 ) &&
|
|
((env->hflags & HF_CPL_MASK) != 0)) {
|
|
raise_exception_ra(env, EXCP0D_GPF, GETPC());
|
|
}
|
|
cpu_svm_check_intercept_param(env, SVM_EXIT_RDPMC, 0, GETPC());
|
|
|
|
/* currently unimplemented */
|
|
qemu_log_mask(LOG_UNIMP, "x86: unimplemented rdpmc\n");
|
|
raise_exception_err(env, EXCP06_ILLOP, 0);
|
|
}
|
|
|
|
G_NORETURN void do_pause(CPUX86State *env)
|
|
{
|
|
CPUState *cs = env_cpu(env);
|
|
|
|
/* Just let another CPU run. */
|
|
cs->exception_index = EXCP_INTERRUPT;
|
|
cpu_loop_exit(cs);
|
|
}
|
|
|
|
G_NORETURN void helper_pause(CPUX86State *env, int next_eip_addend)
|
|
{
|
|
cpu_svm_check_intercept_param(env, SVM_EXIT_PAUSE, 0, GETPC());
|
|
env->eip += next_eip_addend;
|
|
|
|
do_pause(env);
|
|
}
|
|
|
|
uint64_t helper_rdpkru(CPUX86State *env, uint32_t ecx)
|
|
{
|
|
if ((env->cr[4] & CR4_PKE_MASK) == 0) {
|
|
raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
|
|
}
|
|
if (ecx != 0) {
|
|
raise_exception_err_ra(env, EXCP0D_GPF, 0, GETPC());
|
|
}
|
|
|
|
return env->pkru;
|
|
}
|
|
|
|
void helper_wrpkru(CPUX86State *env, uint32_t ecx, uint64_t val)
|
|
{
|
|
CPUState *cs = env_cpu(env);
|
|
|
|
if ((env->cr[4] & CR4_PKE_MASK) == 0) {
|
|
raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
|
|
}
|
|
if (ecx != 0 || (val & 0xFFFFFFFF00000000ull)) {
|
|
raise_exception_err_ra(env, EXCP0D_GPF, 0, GETPC());
|
|
}
|
|
|
|
env->pkru = val;
|
|
tlb_flush(cs);
|
|
}
|
|
|
|
target_ulong HELPER(rdpid)(CPUX86State *env)
|
|
{
|
|
#if !defined CONFIG_USER_ONLY
|
|
return env->tsc_aux;
|
|
#elif defined CONFIG_LINUX && defined CONFIG_GETCPU
|
|
unsigned cpu, node;
|
|
getcpu(&cpu, &node);
|
|
return (node << 12) | (cpu & 0xfff);
|
|
#elif defined CONFIG_SCHED_GETCPU
|
|
return sched_getcpu();
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|