2b41f10e18
Most exec-all.h include directives are now useless, remove them. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
143 lines
3.6 KiB
C
143 lines
3.6 KiB
C
/*
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* i386 execution defines
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "dyngen-exec.h"
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/* XXX: factorize this mess */
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#ifdef TARGET_X86_64
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#define TARGET_LONG_BITS 64
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#else
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#define TARGET_LONG_BITS 32
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#endif
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#include "cpu-defs.h"
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register struct CPUX86State *env asm(AREG0);
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#include "qemu-common.h"
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#include "qemu-log.h"
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#include "cpu.h"
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/* op_helper.c */
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void QEMU_NORETURN raise_exception_err(int exception_index, int error_code);
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void QEMU_NORETURN raise_exception(int exception_index);
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void QEMU_NORETURN raise_exception_env(int exception_index, CPUState *nenv);
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/* n must be a constant to be efficient */
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static inline target_long lshift(target_long x, int n)
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{
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if (n >= 0)
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return x << n;
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else
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return x >> (-n);
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}
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#include "helper.h"
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#if !defined(CONFIG_USER_ONLY)
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#include "softmmu_exec.h"
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#endif /* !defined(CONFIG_USER_ONLY) */
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#define RC_MASK 0xc00
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#define RC_NEAR 0x000
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#define RC_DOWN 0x400
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#define RC_UP 0x800
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#define RC_CHOP 0xc00
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#define MAXTAN 9223372036854775808.0
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/* the following deal with x86 long double-precision numbers */
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#define MAXEXPD 0x7fff
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#define EXPBIAS 16383
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#define EXPD(fp) (fp.l.upper & 0x7fff)
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#define SIGND(fp) ((fp.l.upper) & 0x8000)
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#define MANTD(fp) (fp.l.lower)
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#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
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static inline void fpush(void)
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{
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env->fpstt = (env->fpstt - 1) & 7;
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env->fptags[env->fpstt] = 0; /* validate stack entry */
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}
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static inline void fpop(void)
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{
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env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
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env->fpstt = (env->fpstt + 1) & 7;
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}
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static inline floatx80 helper_fldt(target_ulong ptr)
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{
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CPU_LDoubleU temp;
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temp.l.lower = ldq(ptr);
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temp.l.upper = lduw(ptr + 8);
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return temp.d;
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}
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static inline void helper_fstt(floatx80 f, target_ulong ptr)
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{
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CPU_LDoubleU temp;
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temp.d = f;
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stq(ptr, temp.l.lower);
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stw(ptr + 8, temp.l.upper);
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}
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#define FPUS_IE (1 << 0)
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#define FPUS_DE (1 << 1)
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#define FPUS_ZE (1 << 2)
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#define FPUS_OE (1 << 3)
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#define FPUS_UE (1 << 4)
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#define FPUS_PE (1 << 5)
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#define FPUS_SF (1 << 6)
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#define FPUS_SE (1 << 7)
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#define FPUS_B (1 << 15)
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#define FPUC_EM 0x3f
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static inline uint32_t compute_eflags(void)
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{
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return env->eflags | helper_cc_compute_all(CC_OP) | (DF & DF_MASK);
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}
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/* NOTE: CC_OP must be modified manually to CC_OP_EFLAGS */
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static inline void load_eflags(int eflags, int update_mask)
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{
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CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
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DF = 1 - (2 * ((eflags >> 10) & 1));
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env->eflags = (env->eflags & ~update_mask) |
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(eflags & update_mask) | 0x2;
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}
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/* load efer and update the corresponding hflags. XXX: do consistency
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checks with cpuid bits ? */
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static inline void cpu_load_efer(CPUState *env, uint64_t val)
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{
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env->efer = val;
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env->hflags &= ~(HF_LMA_MASK | HF_SVME_MASK);
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if (env->efer & MSR_EFER_LMA)
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env->hflags |= HF_LMA_MASK;
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if (env->efer & MSR_EFER_SVME)
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env->hflags |= HF_SVME_MASK;
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}
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