OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity
3bd7da9e18
qemu-e2k/target-i386/op.c
bellard 3bd7da9e18 convert remaining segment handling to TCG 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4514 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-21 16:34:06 +00:00

393 lines
7.7 KiB
C
Raw Blame History

/*
* i386 micro operations
*
* 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 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define ASM_SOFTMMU
#include "exec.h"
/* we define the various pieces of code used by the JIT */
#define REG EAX
#define REGNAME _EAX
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG ECX
#define REGNAME _ECX
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG EDX
#define REGNAME _EDX
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG EBX
#define REGNAME _EBX
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG ESP
#define REGNAME _ESP
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG EBP
#define REGNAME _EBP
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG ESI
#define REGNAME _ESI
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG EDI
#define REGNAME _EDI
#include "opreg_template.h"
#undef REG
#undef REGNAME
#ifdef TARGET_X86_64
#define REG (env->regs[8])
#define REGNAME _R8
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG (env->regs[9])
#define REGNAME _R9
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG (env->regs[10])
#define REGNAME _R10
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG (env->regs[11])
#define REGNAME _R11
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG (env->regs[12])
#define REGNAME _R12
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG (env->regs[13])
#define REGNAME _R13
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG (env->regs[14])
#define REGNAME _R14
#include "opreg_template.h"
#undef REG
#undef REGNAME
#define REG (env->regs[15])
#define REGNAME _R15
#include "opreg_template.h"
#undef REG
#undef REGNAME
#endif
/* multiple size ops */
#define ldul ldl
#define SHIFT 0
#include "ops_template.h"
#undef SHIFT
#define SHIFT 1
#include "ops_template.h"
#undef SHIFT
#define SHIFT 2
#include "ops_template.h"
#undef SHIFT
#ifdef TARGET_X86_64
#define SHIFT 3
#include "ops_template.h"
#undef SHIFT
#endif
void OPPROTO op_movl_T0_env(void)
{
T0 = *(uint32_t *)((char *)env + PARAM1);
}
void OPPROTO op_movl_env_T0(void)
{
*(uint32_t *)((char *)env + PARAM1) = T0;
}
void OPPROTO op_movl_env_T1(void)
{
*(uint32_t *)((char *)env + PARAM1) = T1;
}
void OPPROTO op_movtl_T0_env(void)
{
T0 = *(target_ulong *)((char *)env + PARAM1);
}
void OPPROTO op_movtl_env_T0(void)
{
*(target_ulong *)((char *)env + PARAM1) = T0;
}
void OPPROTO op_movtl_T1_env(void)
{
T1 = *(target_ulong *)((char *)env + PARAM1);
}
void OPPROTO op_movtl_env_T1(void)
{
*(target_ulong *)((char *)env + PARAM1) = T1;
}
/* flags handling */
void OPPROTO op_jmp_label(void)
{
GOTO_LABEL_PARAM(1);
}
void OPPROTO op_jnz_T0_label(void)
{
if (T0)
GOTO_LABEL_PARAM(1);
FORCE_RET();
}
/* slow set cases (compute x86 flags) */
void OPPROTO op_seto_T0_cc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
T0 = (eflags >> 11) & 1;
}
void OPPROTO op_setb_T0_cc(void)
{
T0 = cc_table[CC_OP].compute_c();
}
void OPPROTO op_setz_T0_cc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
T0 = (eflags >> 6) & 1;
}
void OPPROTO op_setbe_T0_cc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
T0 = (eflags & (CC_Z | CC_C)) != 0;
}
void OPPROTO op_sets_T0_cc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
T0 = (eflags >> 7) & 1;
}
void OPPROTO op_setp_T0_cc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
T0 = (eflags >> 2) & 1;
}
void OPPROTO op_setl_T0_cc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
T0 = ((eflags ^ (eflags >> 4)) >> 7) & 1;
}
void OPPROTO op_setle_T0_cc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
T0 = (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z)) != 0;
}
void OPPROTO op_xor_T0_1(void)
{
T0 ^= 1;
}
/* XXX: clear VIF/VIP in all ops ? */
void OPPROTO op_movl_eflags_T0(void)
{
load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK));
}
void OPPROTO op_movw_eflags_T0(void)
{
load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK) & 0xffff);
}
void OPPROTO op_movl_eflags_T0_io(void)
{
load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK));
}
void OPPROTO op_movw_eflags_T0_io(void)
{
load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK) & 0xffff);
}
void OPPROTO op_movl_eflags_T0_cpl0(void)
{
load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK));
}
void OPPROTO op_movw_eflags_T0_cpl0(void)
{
load_eflags(T0, (TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK) & 0xffff);
}
#if 0
/* vm86plus version */
void OPPROTO op_movw_eflags_T0_vm(void)
{
int eflags;
eflags = T0;
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
DF = 1 - (2 * ((eflags >> 10) & 1));
/* we also update some system flags as in user mode */
env->eflags = (env->eflags & ~(FL_UPDATE_MASK16 | VIF_MASK)) |
(eflags & FL_UPDATE_MASK16);
if (eflags & IF_MASK) {
env->eflags |= VIF_MASK;
if (env->eflags & VIP_MASK) {
EIP = PARAM1;
raise_exception(EXCP0D_GPF);
}
}
FORCE_RET();
}
void OPPROTO op_movl_eflags_T0_vm(void)
{
int eflags;
eflags = T0;
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
DF = 1 - (2 * ((eflags >> 10) & 1));
/* we also update some system flags as in user mode */
env->eflags = (env->eflags & ~(FL_UPDATE_MASK32 | VIF_MASK)) |
(eflags & FL_UPDATE_MASK32);
if (eflags & IF_MASK) {
env->eflags |= VIF_MASK;
if (env->eflags & VIP_MASK) {
EIP = PARAM1;
raise_exception(EXCP0D_GPF);
}
}
FORCE_RET();
}
#endif
/* XXX: compute only O flag */
void OPPROTO op_movb_eflags_T0(void)
{
int of;
of = cc_table[CC_OP].compute_all() & CC_O;
CC_SRC = (T0 & (CC_S | CC_Z | CC_A | CC_P | CC_C)) | of;
}
void OPPROTO op_movl_T0_eflags(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
eflags |= (DF & DF_MASK);
eflags |= env->eflags & ~(VM_MASK | RF_MASK);
T0 = eflags;
}
/* vm86plus version */
#if 0
void OPPROTO op_movl_T0_eflags_vm(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
eflags |= (DF & DF_MASK);
eflags |= env->eflags & ~(VM_MASK | RF_MASK | IF_MASK);
if (env->eflags & VIF_MASK)
eflags |= IF_MASK;
T0 = eflags;
}
#endif
void OPPROTO op_clc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
eflags &= ~CC_C;
CC_SRC = eflags;
}
void OPPROTO op_stc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
eflags |= CC_C;
CC_SRC = eflags;
}
void OPPROTO op_cmc(void)
{
int eflags;
eflags = cc_table[CC_OP].compute_all();
eflags ^= CC_C;
CC_SRC = eflags;
}
void OPPROTO op_salc(void)
{
int cf;
cf = cc_table[CC_OP].compute_c();
EAX = (EAX & ~0xff) | ((-cf) & 0xff);
}
Reference in New Issue View Git Blame Copy Permalink