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| 1 |
/*
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* ARM translation
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h> |
| 21 |
#include <stdlib.h> |
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#include <stdio.h> |
| 23 |
#include <string.h> |
| 24 |
#include <inttypes.h> |
| 25 |
|
| 26 |
#include "cpu.h" |
| 27 |
#include "exec-all.h" |
| 28 |
#include "disas.h" |
| 29 |
|
| 30 |
/* internal defines */
|
| 31 |
typedef struct DisasContext { |
| 32 |
uint8_t *pc; |
| 33 |
int is_jmp;
|
| 34 |
struct TranslationBlock *tb;
|
| 35 |
} DisasContext; |
| 36 |
|
| 37 |
#define DISAS_JUMP_NEXT 4 |
| 38 |
|
| 39 |
/* XXX: move that elsewhere */
|
| 40 |
static uint16_t *gen_opc_ptr;
|
| 41 |
static uint32_t *gen_opparam_ptr;
|
| 42 |
extern FILE *logfile;
|
| 43 |
extern int loglevel; |
| 44 |
|
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enum {
|
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#define DEF(s, n, copy_size) INDEX_op_ ## s, |
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#include "opc.h" |
| 48 |
#undef DEF
|
| 49 |
NB_OPS, |
| 50 |
}; |
| 51 |
|
| 52 |
#include "gen-op.h" |
| 53 |
|
| 54 |
typedef void (GenOpFunc)(void); |
| 55 |
typedef void (GenOpFunc1)(long); |
| 56 |
typedef void (GenOpFunc2)(long, long); |
| 57 |
typedef void (GenOpFunc3)(long, long, long); |
| 58 |
|
| 59 |
static GenOpFunc2 *gen_test_cc[14] = { |
| 60 |
gen_op_test_eq, |
| 61 |
gen_op_test_ne, |
| 62 |
gen_op_test_cs, |
| 63 |
gen_op_test_cc, |
| 64 |
gen_op_test_mi, |
| 65 |
gen_op_test_pl, |
| 66 |
gen_op_test_vs, |
| 67 |
gen_op_test_vc, |
| 68 |
gen_op_test_hi, |
| 69 |
gen_op_test_ls, |
| 70 |
gen_op_test_ge, |
| 71 |
gen_op_test_lt, |
| 72 |
gen_op_test_gt, |
| 73 |
gen_op_test_le, |
| 74 |
}; |
| 75 |
|
| 76 |
const uint8_t table_logic_cc[16] = { |
| 77 |
1, /* and */ |
| 78 |
1, /* xor */ |
| 79 |
0, /* sub */ |
| 80 |
0, /* rsb */ |
| 81 |
0, /* add */ |
| 82 |
0, /* adc */ |
| 83 |
0, /* sbc */ |
| 84 |
0, /* rsc */ |
| 85 |
1, /* andl */ |
| 86 |
1, /* xorl */ |
| 87 |
0, /* cmp */ |
| 88 |
0, /* cmn */ |
| 89 |
1, /* orr */ |
| 90 |
1, /* mov */ |
| 91 |
1, /* bic */ |
| 92 |
1, /* mvn */ |
| 93 |
}; |
| 94 |
|
| 95 |
static GenOpFunc1 *gen_shift_T1_im[4] = { |
| 96 |
gen_op_shll_T1_im, |
| 97 |
gen_op_shrl_T1_im, |
| 98 |
gen_op_sarl_T1_im, |
| 99 |
gen_op_rorl_T1_im, |
| 100 |
}; |
| 101 |
|
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static GenOpFunc1 *gen_shift_T2_im[4] = { |
| 103 |
gen_op_shll_T2_im, |
| 104 |
gen_op_shrl_T2_im, |
| 105 |
gen_op_sarl_T2_im, |
| 106 |
gen_op_rorl_T2_im, |
| 107 |
}; |
| 108 |
|
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static GenOpFunc1 *gen_shift_T1_im_cc[4] = { |
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gen_op_shll_T1_im_cc, |
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gen_op_shrl_T1_im_cc, |
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gen_op_sarl_T1_im_cc, |
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gen_op_rorl_T1_im_cc, |
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}; |
| 115 |
|
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static GenOpFunc *gen_shift_T1_T0[4] = { |
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gen_op_shll_T1_T0, |
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gen_op_shrl_T1_T0, |
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gen_op_sarl_T1_T0, |
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gen_op_rorl_T1_T0, |
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}; |
| 122 |
|
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static GenOpFunc *gen_shift_T1_T0_cc[4] = { |
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gen_op_shll_T1_T0_cc, |
| 125 |
gen_op_shrl_T1_T0_cc, |
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gen_op_sarl_T1_T0_cc, |
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gen_op_rorl_T1_T0_cc, |
| 128 |
}; |
| 129 |
|
| 130 |
static GenOpFunc *gen_op_movl_TN_reg[3][16] = { |
| 131 |
{
|
| 132 |
gen_op_movl_T0_r0, |
| 133 |
gen_op_movl_T0_r1, |
| 134 |
gen_op_movl_T0_r2, |
| 135 |
gen_op_movl_T0_r3, |
| 136 |
gen_op_movl_T0_r4, |
| 137 |
gen_op_movl_T0_r5, |
| 138 |
gen_op_movl_T0_r6, |
| 139 |
gen_op_movl_T0_r7, |
| 140 |
gen_op_movl_T0_r8, |
| 141 |
gen_op_movl_T0_r9, |
| 142 |
gen_op_movl_T0_r10, |
| 143 |
gen_op_movl_T0_r11, |
| 144 |
gen_op_movl_T0_r12, |
| 145 |
gen_op_movl_T0_r13, |
| 146 |
gen_op_movl_T0_r14, |
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gen_op_movl_T0_r15, |
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}, |
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{
|
| 150 |
gen_op_movl_T1_r0, |
| 151 |
gen_op_movl_T1_r1, |
| 152 |
gen_op_movl_T1_r2, |
| 153 |
gen_op_movl_T1_r3, |
| 154 |
gen_op_movl_T1_r4, |
| 155 |
gen_op_movl_T1_r5, |
| 156 |
gen_op_movl_T1_r6, |
| 157 |
gen_op_movl_T1_r7, |
| 158 |
gen_op_movl_T1_r8, |
| 159 |
gen_op_movl_T1_r9, |
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gen_op_movl_T1_r10, |
| 161 |
gen_op_movl_T1_r11, |
| 162 |
gen_op_movl_T1_r12, |
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gen_op_movl_T1_r13, |
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gen_op_movl_T1_r14, |
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gen_op_movl_T1_r15, |
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}, |
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{
|
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gen_op_movl_T2_r0, |
| 169 |
gen_op_movl_T2_r1, |
| 170 |
gen_op_movl_T2_r2, |
| 171 |
gen_op_movl_T2_r3, |
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gen_op_movl_T2_r4, |
| 173 |
gen_op_movl_T2_r5, |
| 174 |
gen_op_movl_T2_r6, |
| 175 |
gen_op_movl_T2_r7, |
| 176 |
gen_op_movl_T2_r8, |
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gen_op_movl_T2_r9, |
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gen_op_movl_T2_r10, |
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gen_op_movl_T2_r11, |
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gen_op_movl_T2_r12, |
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gen_op_movl_T2_r13, |
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gen_op_movl_T2_r14, |
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gen_op_movl_T2_r15, |
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}, |
| 185 |
}; |
| 186 |
|
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static GenOpFunc *gen_op_movl_reg_TN[2][16] = { |
| 188 |
{
|
| 189 |
gen_op_movl_r0_T0, |
| 190 |
gen_op_movl_r1_T0, |
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gen_op_movl_r2_T0, |
| 192 |
gen_op_movl_r3_T0, |
| 193 |
gen_op_movl_r4_T0, |
| 194 |
gen_op_movl_r5_T0, |
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gen_op_movl_r6_T0, |
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gen_op_movl_r7_T0, |
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gen_op_movl_r8_T0, |
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gen_op_movl_r9_T0, |
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gen_op_movl_r10_T0, |
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gen_op_movl_r11_T0, |
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gen_op_movl_r12_T0, |
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gen_op_movl_r13_T0, |
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gen_op_movl_r14_T0, |
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gen_op_movl_r15_T0, |
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}, |
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{
|
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gen_op_movl_r0_T1, |
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gen_op_movl_r1_T1, |
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gen_op_movl_r2_T1, |
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gen_op_movl_r3_T1, |
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gen_op_movl_r4_T1, |
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gen_op_movl_r5_T1, |
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gen_op_movl_r6_T1, |
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gen_op_movl_r7_T1, |
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gen_op_movl_r8_T1, |
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gen_op_movl_r9_T1, |
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gen_op_movl_r10_T1, |
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gen_op_movl_r11_T1, |
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gen_op_movl_r12_T1, |
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gen_op_movl_r13_T1, |
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gen_op_movl_r14_T1, |
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gen_op_movl_r15_T1, |
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}, |
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}; |
| 225 |
|
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static GenOpFunc1 *gen_op_movl_TN_im[3] = { |
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gen_op_movl_T0_im, |
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gen_op_movl_T1_im, |
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gen_op_movl_T2_im, |
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}; |
| 231 |
|
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static inline void gen_movl_TN_reg(DisasContext *s, int reg, int t) |
| 233 |
{
|
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int val;
|
| 235 |
|
| 236 |
if (reg == 15) { |
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/* normaly, since we updated PC, we need only to add 4 */
|
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val = (long)s->pc + 4; |
| 239 |
gen_op_movl_TN_im[t](val); |
| 240 |
} else {
|
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gen_op_movl_TN_reg[t][reg](); |
| 242 |
} |
| 243 |
} |
| 244 |
|
| 245 |
static inline void gen_movl_T0_reg(DisasContext *s, int reg) |
| 246 |
{
|
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gen_movl_TN_reg(s, reg, 0);
|
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} |
| 249 |
|
| 250 |
static inline void gen_movl_T1_reg(DisasContext *s, int reg) |
| 251 |
{
|
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gen_movl_TN_reg(s, reg, 1);
|
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} |
| 254 |
|
| 255 |
static inline void gen_movl_T2_reg(DisasContext *s, int reg) |
| 256 |
{
|
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gen_movl_TN_reg(s, reg, 2);
|
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} |
| 259 |
|
| 260 |
static inline void gen_movl_reg_TN(DisasContext *s, int reg, int t) |
| 261 |
{
|
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gen_op_movl_reg_TN[t][reg](); |
| 263 |
if (reg == 15) { |
| 264 |
s->is_jmp = DISAS_JUMP; |
| 265 |
} |
| 266 |
} |
| 267 |
|
| 268 |
static inline void gen_movl_reg_T0(DisasContext *s, int reg) |
| 269 |
{
|
| 270 |
gen_movl_reg_TN(s, reg, 0);
|
| 271 |
} |
| 272 |
|
| 273 |
static inline void gen_movl_reg_T1(DisasContext *s, int reg) |
| 274 |
{
|
| 275 |
gen_movl_reg_TN(s, reg, 1);
|
| 276 |
} |
| 277 |
|
| 278 |
static inline void gen_add_data_offset(DisasContext *s, unsigned int insn) |
| 279 |
{
|
| 280 |
int val, rm, shift;
|
| 281 |
|
| 282 |
if (!(insn & (1 << 25))) { |
| 283 |
/* immediate */
|
| 284 |
val = insn & 0xfff;
|
| 285 |
if (!(insn & (1 << 23))) |
| 286 |
val = -val; |
| 287 |
gen_op_addl_T1_im(val); |
| 288 |
} else {
|
| 289 |
/* shift/register */
|
| 290 |
rm = (insn) & 0xf;
|
| 291 |
shift = (insn >> 7) & 0x1f; |
| 292 |
gen_movl_T2_reg(s, rm); |
| 293 |
if (shift != 0) { |
| 294 |
gen_shift_T2_im[(insn >> 5) & 3](shift); |
| 295 |
} |
| 296 |
if (!(insn & (1 << 23))) |
| 297 |
gen_op_subl_T1_T2(); |
| 298 |
else
|
| 299 |
gen_op_addl_T1_T2(); |
| 300 |
} |
| 301 |
} |
| 302 |
|
| 303 |
static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn) |
| 304 |
{
|
| 305 |
int val, rm;
|
| 306 |
|
| 307 |
if (insn & (1 << 22)) { |
| 308 |
/* immediate */
|
| 309 |
val = (insn & 0xf) | ((insn >> 4) & 0xf0); |
| 310 |
if (!(insn & (1 << 23))) |
| 311 |
val = -val; |
| 312 |
gen_op_addl_T1_im(val); |
| 313 |
} else {
|
| 314 |
/* register */
|
| 315 |
rm = (insn) & 0xf;
|
| 316 |
gen_movl_T2_reg(s, rm); |
| 317 |
if (!(insn & (1 << 23))) |
| 318 |
gen_op_subl_T1_T2(); |
| 319 |
else
|
| 320 |
gen_op_addl_T1_T2(); |
| 321 |
} |
| 322 |
} |
| 323 |
|
| 324 |
static void disas_arm_insn(DisasContext *s) |
| 325 |
{
|
| 326 |
unsigned int cond, insn, val, op1, i, shift, rm, rs, rn, rd, sh; |
| 327 |
|
| 328 |
insn = ldl(s->pc); |
| 329 |
s->pc += 4;
|
| 330 |
|
| 331 |
cond = insn >> 28;
|
| 332 |
if (cond == 0xf) |
| 333 |
goto illegal_op;
|
| 334 |
if (cond != 0xe) { |
| 335 |
/* if not always execute, we generate a conditional jump to
|
| 336 |
next instruction */
|
| 337 |
gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc); |
| 338 |
s->is_jmp = DISAS_JUMP_NEXT; |
| 339 |
} |
| 340 |
if (((insn & 0x0e000000) == 0 && |
| 341 |
(insn & 0x00000090) != 0x90) || |
| 342 |
((insn & 0x0e000000) == (1 << 25))) { |
| 343 |
int set_cc, logic_cc, shiftop;
|
| 344 |
|
| 345 |
op1 = (insn >> 21) & 0xf; |
| 346 |
set_cc = (insn >> 20) & 1; |
| 347 |
logic_cc = table_logic_cc[op1] & set_cc; |
| 348 |
|
| 349 |
/* data processing instruction */
|
| 350 |
if (insn & (1 << 25)) { |
| 351 |
/* immediate operand */
|
| 352 |
val = insn & 0xff;
|
| 353 |
shift = ((insn >> 8) & 0xf) * 2; |
| 354 |
if (shift)
|
| 355 |
val = (val >> shift) | (val << (32 - shift));
|
| 356 |
gen_op_movl_T1_im(val); |
| 357 |
/* XXX: is CF modified ? */
|
| 358 |
} else {
|
| 359 |
/* register */
|
| 360 |
rm = (insn) & 0xf;
|
| 361 |
gen_movl_T1_reg(s, rm); |
| 362 |
shiftop = (insn >> 5) & 3; |
| 363 |
if (!(insn & (1 << 4))) { |
| 364 |
shift = (insn >> 7) & 0x1f; |
| 365 |
if (shift != 0) { |
| 366 |
if (logic_cc) {
|
| 367 |
gen_shift_T1_im_cc[shiftop](shift); |
| 368 |
} else {
|
| 369 |
gen_shift_T1_im[shiftop](shift); |
| 370 |
} |
| 371 |
} |
| 372 |
} else {
|
| 373 |
rs = (insn >> 8) & 0xf; |
| 374 |
gen_movl_T0_reg(s, rs); |
| 375 |
if (logic_cc) {
|
| 376 |
gen_shift_T1_T0_cc[shiftop](); |
| 377 |
} else {
|
| 378 |
gen_shift_T1_T0[shiftop](); |
| 379 |
} |
| 380 |
} |
| 381 |
} |
| 382 |
if (op1 != 0x0f && op1 != 0x0d) { |
| 383 |
rn = (insn >> 16) & 0xf; |
| 384 |
gen_movl_T0_reg(s, rn); |
| 385 |
} |
| 386 |
rd = (insn >> 12) & 0xf; |
| 387 |
switch(op1) {
|
| 388 |
case 0x00: |
| 389 |
gen_op_andl_T0_T1(); |
| 390 |
gen_movl_reg_T0(s, rd); |
| 391 |
if (logic_cc)
|
| 392 |
gen_op_logic_T0_cc(); |
| 393 |
break;
|
| 394 |
case 0x01: |
| 395 |
gen_op_xorl_T0_T1(); |
| 396 |
gen_movl_reg_T0(s, rd); |
| 397 |
if (logic_cc)
|
| 398 |
gen_op_logic_T0_cc(); |
| 399 |
break;
|
| 400 |
case 0x02: |
| 401 |
if (set_cc)
|
| 402 |
gen_op_subl_T0_T1_cc(); |
| 403 |
else
|
| 404 |
gen_op_subl_T0_T1(); |
| 405 |
gen_movl_reg_T0(s, rd); |
| 406 |
break;
|
| 407 |
case 0x03: |
| 408 |
if (set_cc)
|
| 409 |
gen_op_rsbl_T0_T1_cc(); |
| 410 |
else
|
| 411 |
gen_op_rsbl_T0_T1(); |
| 412 |
gen_movl_reg_T0(s, rd); |
| 413 |
break;
|
| 414 |
case 0x04: |
| 415 |
if (set_cc)
|
| 416 |
gen_op_addl_T0_T1_cc(); |
| 417 |
else
|
| 418 |
gen_op_addl_T0_T1(); |
| 419 |
gen_movl_reg_T0(s, rd); |
| 420 |
break;
|
| 421 |
case 0x05: |
| 422 |
if (set_cc)
|
| 423 |
gen_op_adcl_T0_T1_cc(); |
| 424 |
else
|
| 425 |
gen_op_adcl_T0_T1(); |
| 426 |
gen_movl_reg_T0(s, rd); |
| 427 |
break;
|
| 428 |
case 0x06: |
| 429 |
if (set_cc)
|
| 430 |
gen_op_sbcl_T0_T1_cc(); |
| 431 |
else
|
| 432 |
gen_op_sbcl_T0_T1(); |
| 433 |
gen_movl_reg_T0(s, rd); |
| 434 |
break;
|
| 435 |
case 0x07: |
| 436 |
if (set_cc)
|
| 437 |
gen_op_rscl_T0_T1_cc(); |
| 438 |
else
|
| 439 |
gen_op_rscl_T0_T1(); |
| 440 |
gen_movl_reg_T0(s, rd); |
| 441 |
break;
|
| 442 |
case 0x08: |
| 443 |
if (set_cc) {
|
| 444 |
gen_op_andl_T0_T1(); |
| 445 |
gen_op_logic_T0_cc(); |
| 446 |
} |
| 447 |
break;
|
| 448 |
case 0x09: |
| 449 |
if (set_cc) {
|
| 450 |
gen_op_xorl_T0_T1(); |
| 451 |
gen_op_logic_T0_cc(); |
| 452 |
} |
| 453 |
break;
|
| 454 |
case 0x0a: |
| 455 |
if (set_cc) {
|
| 456 |
gen_op_subl_T0_T1_cc(); |
| 457 |
} |
| 458 |
break;
|
| 459 |
case 0x0b: |
| 460 |
if (set_cc) {
|
| 461 |
gen_op_addl_T0_T1_cc(); |
| 462 |
} |
| 463 |
break;
|
| 464 |
case 0x0c: |
| 465 |
gen_op_orl_T0_T1(); |
| 466 |
gen_movl_reg_T0(s, rd); |
| 467 |
if (logic_cc)
|
| 468 |
gen_op_logic_T0_cc(); |
| 469 |
break;
|
| 470 |
case 0x0d: |
| 471 |
gen_movl_reg_T1(s, rd); |
| 472 |
if (logic_cc)
|
| 473 |
gen_op_logic_T1_cc(); |
| 474 |
break;
|
| 475 |
case 0x0e: |
| 476 |
gen_op_bicl_T0_T1(); |
| 477 |
gen_movl_reg_T0(s, rd); |
| 478 |
if (logic_cc)
|
| 479 |
gen_op_logic_T0_cc(); |
| 480 |
break;
|
| 481 |
default:
|
| 482 |
case 0x0f: |
| 483 |
gen_op_notl_T1(); |
| 484 |
gen_movl_reg_T1(s, rd); |
| 485 |
if (logic_cc)
|
| 486 |
gen_op_logic_T1_cc(); |
| 487 |
break;
|
| 488 |
} |
| 489 |
} else {
|
| 490 |
/* other instructions */
|
| 491 |
op1 = (insn >> 24) & 0xf; |
| 492 |
switch(op1) {
|
| 493 |
case 0x0: |
| 494 |
case 0x1: |
| 495 |
sh = (insn >> 5) & 3; |
| 496 |
if (sh == 0) { |
| 497 |
if (op1 == 0x0) { |
| 498 |
rd = (insn >> 16) & 0xf; |
| 499 |
rn = (insn >> 12) & 0xf; |
| 500 |
rs = (insn >> 8) & 0xf; |
| 501 |
rm = (insn) & 0xf;
|
| 502 |
if (!(insn & (1 << 23))) { |
| 503 |
/* 32 bit mul */
|
| 504 |
gen_movl_T0_reg(s, rs); |
| 505 |
gen_movl_T1_reg(s, rm); |
| 506 |
gen_op_mul_T0_T1(); |
| 507 |
if (insn & (1 << 21)) { |
| 508 |
gen_movl_T1_reg(s, rn); |
| 509 |
gen_op_addl_T0_T1(); |
| 510 |
} |
| 511 |
if (insn & (1 << 20)) |
| 512 |
gen_op_logic_T0_cc(); |
| 513 |
gen_movl_reg_T0(s, rd); |
| 514 |
} else {
|
| 515 |
/* 64 bit mul */
|
| 516 |
gen_movl_T0_reg(s, rs); |
| 517 |
gen_movl_T1_reg(s, rm); |
| 518 |
if (insn & (1 << 22)) |
| 519 |
gen_op_mull_T0_T1(); |
| 520 |
else
|
| 521 |
gen_op_imull_T0_T1(); |
| 522 |
if (insn & (1 << 21)) |
| 523 |
gen_op_addq_T0_T1(rn, rd); |
| 524 |
if (insn & (1 << 20)) |
| 525 |
gen_op_logicq_cc(); |
| 526 |
gen_movl_reg_T0(s, rn); |
| 527 |
gen_movl_reg_T1(s, rd); |
| 528 |
} |
| 529 |
} else {
|
| 530 |
/* SWP instruction */
|
| 531 |
rn = (insn >> 16) & 0xf; |
| 532 |
rd = (insn >> 12) & 0xf; |
| 533 |
rm = (insn) & 0xf;
|
| 534 |
|
| 535 |
gen_movl_T0_reg(s, rm); |
| 536 |
gen_movl_T1_reg(s, rn); |
| 537 |
if (insn & (1 << 22)) { |
| 538 |
gen_op_swpb_T0_T1(); |
| 539 |
} else {
|
| 540 |
gen_op_swpl_T0_T1(); |
| 541 |
} |
| 542 |
gen_movl_reg_T0(s, rd); |
| 543 |
} |
| 544 |
} else {
|
| 545 |
/* load/store half word */
|
| 546 |
rn = (insn >> 16) & 0xf; |
| 547 |
rd = (insn >> 12) & 0xf; |
| 548 |
gen_movl_T1_reg(s, rn); |
| 549 |
if (insn & (1 << 25)) |
| 550 |
gen_add_datah_offset(s, insn); |
| 551 |
if (insn & (1 << 20)) { |
| 552 |
/* load */
|
| 553 |
switch(sh) {
|
| 554 |
case 1: |
| 555 |
gen_op_lduw_T0_T1(); |
| 556 |
break;
|
| 557 |
case 2: |
| 558 |
gen_op_ldsb_T0_T1(); |
| 559 |
break;
|
| 560 |
default:
|
| 561 |
case 3: |
| 562 |
gen_op_ldsw_T0_T1(); |
| 563 |
break;
|
| 564 |
} |
| 565 |
} else {
|
| 566 |
/* store */
|
| 567 |
gen_op_stw_T0_T1(); |
| 568 |
} |
| 569 |
if (!(insn & (1 << 24))) { |
| 570 |
gen_add_datah_offset(s, insn); |
| 571 |
gen_movl_reg_T1(s, rn); |
| 572 |
} else if (insn & (1 << 21)) { |
| 573 |
gen_movl_reg_T1(s, rn); |
| 574 |
} |
| 575 |
} |
| 576 |
break;
|
| 577 |
case 0x4: |
| 578 |
case 0x5: |
| 579 |
case 0x6: |
| 580 |
case 0x7: |
| 581 |
/* load/store byte/word */
|
| 582 |
rn = (insn >> 16) & 0xf; |
| 583 |
rd = (insn >> 12) & 0xf; |
| 584 |
gen_movl_T1_reg(s, rn); |
| 585 |
if (insn & (1 << 24)) |
| 586 |
gen_add_data_offset(s, insn); |
| 587 |
if (insn & (1 << 20)) { |
| 588 |
/* load */
|
| 589 |
if (insn & (1 << 22)) |
| 590 |
gen_op_ldub_T0_T1(); |
| 591 |
else
|
| 592 |
gen_op_ldl_T0_T1(); |
| 593 |
gen_movl_reg_T0(s, rd); |
| 594 |
} else {
|
| 595 |
/* store */
|
| 596 |
gen_movl_T0_reg(s, rd); |
| 597 |
if (insn & (1 << 22)) |
| 598 |
gen_op_stb_T0_T1(); |
| 599 |
else
|
| 600 |
gen_op_stl_T0_T1(); |
| 601 |
} |
| 602 |
if (!(insn & (1 << 24))) { |
| 603 |
gen_add_data_offset(s, insn); |
| 604 |
gen_movl_reg_T1(s, rn); |
| 605 |
} else if (insn & (1 << 21)) |
| 606 |
gen_movl_reg_T1(s, rn); {
|
| 607 |
} |
| 608 |
break;
|
| 609 |
case 0x08: |
| 610 |
case 0x09: |
| 611 |
{
|
| 612 |
int j, n;
|
| 613 |
/* load/store multiple words */
|
| 614 |
/* XXX: store correct base if write back */
|
| 615 |
if (insn & (1 << 22)) |
| 616 |
goto illegal_op; /* only usable in supervisor mode */ |
| 617 |
rn = (insn >> 16) & 0xf; |
| 618 |
gen_movl_T1_reg(s, rn); |
| 619 |
|
| 620 |
/* compute total size */
|
| 621 |
n = 0;
|
| 622 |
for(i=0;i<16;i++) { |
| 623 |
if (insn & (1 << i)) |
| 624 |
n++; |
| 625 |
} |
| 626 |
/* XXX: test invalid n == 0 case ? */
|
| 627 |
if (insn & (1 << 23)) { |
| 628 |
if (insn & (1 << 24)) { |
| 629 |
/* pre increment */
|
| 630 |
gen_op_addl_T1_im(4);
|
| 631 |
} else {
|
| 632 |
/* post increment */
|
| 633 |
} |
| 634 |
} else {
|
| 635 |
if (insn & (1 << 24)) { |
| 636 |
/* pre decrement */
|
| 637 |
gen_op_addl_T1_im(-(n * 4));
|
| 638 |
} else {
|
| 639 |
/* post decrement */
|
| 640 |
if (n != 1) |
| 641 |
gen_op_addl_T1_im(-((n - 1) * 4)); |
| 642 |
} |
| 643 |
} |
| 644 |
j = 0;
|
| 645 |
for(i=0;i<16;i++) { |
| 646 |
if (insn & (1 << i)) { |
| 647 |
if (insn & (1 << 20)) { |
| 648 |
/* load */
|
| 649 |
gen_op_ldl_T0_T1(); |
| 650 |
gen_movl_reg_T0(s, i); |
| 651 |
} else {
|
| 652 |
/* store */
|
| 653 |
if (i == 15) { |
| 654 |
/* special case: r15 = PC + 12 */
|
| 655 |
val = (long)s->pc + 8; |
| 656 |
gen_op_movl_TN_im[0](val);
|
| 657 |
} else {
|
| 658 |
gen_movl_T0_reg(s, i); |
| 659 |
} |
| 660 |
gen_op_stl_T0_T1(); |
| 661 |
} |
| 662 |
j++; |
| 663 |
/* no need to add after the last transfer */
|
| 664 |
if (j != n)
|
| 665 |
gen_op_addl_T1_im(4);
|
| 666 |
} |
| 667 |
} |
| 668 |
if (insn & (1 << 21)) { |
| 669 |
/* write back */
|
| 670 |
if (insn & (1 << 23)) { |
| 671 |
if (insn & (1 << 24)) { |
| 672 |
/* pre increment */
|
| 673 |
} else {
|
| 674 |
/* post increment */
|
| 675 |
gen_op_addl_T1_im(4);
|
| 676 |
} |
| 677 |
} else {
|
| 678 |
if (insn & (1 << 24)) { |
| 679 |
/* pre decrement */
|
| 680 |
if (n != 1) |
| 681 |
gen_op_addl_T1_im(-((n - 1) * 4)); |
| 682 |
} else {
|
| 683 |
/* post decrement */
|
| 684 |
gen_op_addl_T1_im(-(n * 4));
|
| 685 |
} |
| 686 |
} |
| 687 |
gen_movl_reg_T1(s, rn); |
| 688 |
} |
| 689 |
} |
| 690 |
break;
|
| 691 |
case 0xa: |
| 692 |
case 0xb: |
| 693 |
{
|
| 694 |
int offset;
|
| 695 |
|
| 696 |
/* branch (and link) */
|
| 697 |
val = (int)s->pc;
|
| 698 |
if (insn & (1 << 24)) { |
| 699 |
gen_op_movl_T0_im(val); |
| 700 |
gen_op_movl_reg_TN[0][14](); |
| 701 |
} |
| 702 |
offset = (((int)insn << 8) >> 8); |
| 703 |
val += (offset << 2) + 4; |
| 704 |
gen_op_jmp((long)s->tb, val);
|
| 705 |
s->is_jmp = DISAS_TB_JUMP; |
| 706 |
} |
| 707 |
break;
|
| 708 |
case 0xf: |
| 709 |
/* swi */
|
| 710 |
gen_op_movl_T0_im((long)s->pc);
|
| 711 |
gen_op_movl_reg_TN[0][15](); |
| 712 |
gen_op_swi(); |
| 713 |
s->is_jmp = DISAS_JUMP; |
| 714 |
break;
|
| 715 |
case 0xc: |
| 716 |
case 0xd: |
| 717 |
rd = (insn >> 12) & 0x7; |
| 718 |
rn = (insn >> 16) & 0xf; |
| 719 |
gen_movl_T1_reg(s, rn); |
| 720 |
val = (insn) & 0xff;
|
| 721 |
if (!(insn & (1 << 23))) |
| 722 |
val = -val; |
| 723 |
switch((insn >> 8) & 0xf) { |
| 724 |
case 0x1: |
| 725 |
/* load/store */
|
| 726 |
if ((insn & (1 << 24))) |
| 727 |
gen_op_addl_T1_im(val); |
| 728 |
/* XXX: do it */
|
| 729 |
if (!(insn & (1 << 24))) |
| 730 |
gen_op_addl_T1_im(val); |
| 731 |
if (insn & (1 << 21)) |
| 732 |
gen_movl_reg_T1(s, rn); |
| 733 |
break;
|
| 734 |
case 0x2: |
| 735 |
{
|
| 736 |
int n, i;
|
| 737 |
/* load store multiple */
|
| 738 |
if ((insn & (1 << 24))) |
| 739 |
gen_op_addl_T1_im(val); |
| 740 |
switch(insn & 0x00408000) { |
| 741 |
case 0x00008000: n = 1; break; |
| 742 |
case 0x00400000: n = 2; break; |
| 743 |
case 0x00408000: n = 3; break; |
| 744 |
default: n = 4; break; |
| 745 |
} |
| 746 |
for(i = 0;i < n; i++) { |
| 747 |
/* XXX: do it */
|
| 748 |
} |
| 749 |
if (!(insn & (1 << 24))) |
| 750 |
gen_op_addl_T1_im(val); |
| 751 |
if (insn & (1 << 21)) |
| 752 |
gen_movl_reg_T1(s, rn); |
| 753 |
} |
| 754 |
break;
|
| 755 |
default:
|
| 756 |
goto illegal_op;
|
| 757 |
} |
| 758 |
break;
|
| 759 |
case 0x0e: |
| 760 |
/* float ops */
|
| 761 |
/* XXX: do it */
|
| 762 |
switch((insn >> 20) & 0xf) { |
| 763 |
case 0x2: /* wfs */ |
| 764 |
break;
|
| 765 |
case 0x3: /* rfs */ |
| 766 |
break;
|
| 767 |
case 0x4: /* wfc */ |
| 768 |
break;
|
| 769 |
case 0x5: /* rfc */ |
| 770 |
break;
|
| 771 |
default:
|
| 772 |
goto illegal_op;
|
| 773 |
} |
| 774 |
break;
|
| 775 |
default:
|
| 776 |
illegal_op:
|
| 777 |
gen_op_movl_T0_im((long)s->pc - 4); |
| 778 |
gen_op_movl_reg_TN[0][15](); |
| 779 |
gen_op_undef_insn(); |
| 780 |
s->is_jmp = DISAS_JUMP; |
| 781 |
break;
|
| 782 |
} |
| 783 |
} |
| 784 |
} |
| 785 |
|
| 786 |
/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
|
| 787 |
basic block 'tb'. If search_pc is TRUE, also generate PC
|
| 788 |
information for each intermediate instruction. */
|
| 789 |
static inline int gen_intermediate_code_internal(CPUState *env, |
| 790 |
TranslationBlock *tb, |
| 791 |
int search_pc)
|
| 792 |
{
|
| 793 |
DisasContext dc1, *dc = &dc1; |
| 794 |
uint16_t *gen_opc_end; |
| 795 |
int j, lj;
|
| 796 |
uint8_t *pc_start; |
| 797 |
|
| 798 |
/* generate intermediate code */
|
| 799 |
pc_start = (uint8_t *)tb->pc; |
| 800 |
|
| 801 |
dc->tb = tb; |
| 802 |
|
| 803 |
gen_opc_ptr = gen_opc_buf; |
| 804 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
| 805 |
gen_opparam_ptr = gen_opparam_buf; |
| 806 |
|
| 807 |
dc->is_jmp = DISAS_NEXT; |
| 808 |
dc->pc = pc_start; |
| 809 |
lj = -1;
|
| 810 |
do {
|
| 811 |
if (search_pc) {
|
| 812 |
j = gen_opc_ptr - gen_opc_buf; |
| 813 |
if (lj < j) {
|
| 814 |
lj++; |
| 815 |
while (lj < j)
|
| 816 |
gen_opc_instr_start[lj++] = 0;
|
| 817 |
} |
| 818 |
gen_opc_pc[lj] = (uint32_t)dc->pc; |
| 819 |
gen_opc_instr_start[lj] = 1;
|
| 820 |
} |
| 821 |
disas_arm_insn(dc); |
| 822 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
|
| 823 |
(dc->pc - pc_start) < (TARGET_PAGE_SIZE - 32));
|
| 824 |
switch(dc->is_jmp) {
|
| 825 |
case DISAS_JUMP_NEXT:
|
| 826 |
case DISAS_NEXT:
|
| 827 |
gen_op_jmp((long)dc->tb, (long)dc->pc); |
| 828 |
break;
|
| 829 |
default:
|
| 830 |
case DISAS_JUMP:
|
| 831 |
/* indicate that the hash table must be used to find the next TB */
|
| 832 |
gen_op_movl_T0_0(); |
| 833 |
gen_op_exit_tb(); |
| 834 |
break;
|
| 835 |
case DISAS_TB_JUMP:
|
| 836 |
/* nothing more to generate */
|
| 837 |
break;
|
| 838 |
} |
| 839 |
*gen_opc_ptr = INDEX_op_end; |
| 840 |
|
| 841 |
#ifdef DEBUG_DISAS
|
| 842 |
if (loglevel) {
|
| 843 |
fprintf(logfile, "----------------\n");
|
| 844 |
fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
|
| 845 |
disas(logfile, pc_start, dc->pc - pc_start, 0, 0); |
| 846 |
fprintf(logfile, "\n");
|
| 847 |
|
| 848 |
fprintf(logfile, "OP:\n");
|
| 849 |
dump_ops(gen_opc_buf, gen_opparam_buf); |
| 850 |
fprintf(logfile, "\n");
|
| 851 |
} |
| 852 |
#endif
|
| 853 |
if (!search_pc)
|
| 854 |
tb->size = dc->pc - pc_start; |
| 855 |
return 0; |
| 856 |
} |
| 857 |
|
| 858 |
int gen_intermediate_code(CPUState *env, TranslationBlock *tb)
|
| 859 |
{
|
| 860 |
return gen_intermediate_code_internal(env, tb, 0); |
| 861 |
} |
| 862 |
|
| 863 |
int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
|
| 864 |
{
|
| 865 |
return gen_intermediate_code_internal(env, tb, 1); |
| 866 |
} |
| 867 |
|
| 868 |
CPUARMState *cpu_arm_init(void)
|
| 869 |
{
|
| 870 |
CPUARMState *env; |
| 871 |
|
| 872 |
cpu_exec_init(); |
| 873 |
|
| 874 |
env = malloc(sizeof(CPUARMState));
|
| 875 |
if (!env)
|
| 876 |
return NULL; |
| 877 |
memset(env, 0, sizeof(CPUARMState)); |
| 878 |
return env;
|
| 879 |
} |
| 880 |
|
| 881 |
void cpu_arm_close(CPUARMState *env)
|
| 882 |
{
|
| 883 |
free(env); |
| 884 |
} |
| 885 |
|
| 886 |
void cpu_arm_dump_state(CPUARMState *env, FILE *f, int flags) |
| 887 |
{
|
| 888 |
int i;
|
| 889 |
|
| 890 |
for(i=0;i<16;i++) { |
| 891 |
fprintf(f, "R%02d=%08x", i, env->regs[i]);
|
| 892 |
if ((i % 4) == 3) |
| 893 |
fprintf(f, "\n");
|
| 894 |
else
|
| 895 |
fprintf(f, " ");
|
| 896 |
} |
| 897 |
fprintf(f, "PSR=%08x %c%c%c%c\n",
|
| 898 |
env->cpsr, |
| 899 |
env->cpsr & (1 << 31) ? 'N' : '-', |
| 900 |
env->cpsr & (1 << 30) ? 'Z' : '-', |
| 901 |
env->cpsr & (1 << 29) ? 'C' : '-', |
| 902 |
env->cpsr & (1 << 28) ? 'V' : '-'); |
| 903 |
} |