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/*
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* ARM translation
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*
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* Copyright (c) 2003 Fabrice Bellard
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* Copyright (c) 2005 CodeSourcery, LLC
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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> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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|
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#include "cpu.h" |
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#include "exec-all.h" |
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#include "disas.h" |
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|
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#define ENABLE_ARCH_5J 0 |
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#define ENABLE_ARCH_6 1 |
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#define ENABLE_ARCH_6T2 1 |
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|
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#define ARCH(x) if (!ENABLE_ARCH_##x) goto illegal_op; |
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|
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/* internal defines */
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typedef struct DisasContext { |
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target_ulong pc; |
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int is_jmp;
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/* Nonzero if this instruction has been conditionally skipped. */
|
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int condjmp;
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/* The label that will be jumped to when the instruction is skipped. */
|
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int condlabel;
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struct TranslationBlock *tb;
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int singlestep_enabled;
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int thumb;
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int is_mem;
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#if !defined(CONFIG_USER_ONLY)
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int user;
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#endif
|
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} DisasContext; |
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|
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#if defined(CONFIG_USER_ONLY)
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#define IS_USER(s) 1 |
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#else
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#define IS_USER(s) (s->user)
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#endif
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|
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#define DISAS_JUMP_NEXT 4 |
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|
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#ifdef USE_DIRECT_JUMP
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#define TBPARAM(x)
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#else
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#define TBPARAM(x) (long)(x) |
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#endif
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|
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/* XXX: move that elsewhere */
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static uint16_t *gen_opc_ptr;
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static uint32_t *gen_opparam_ptr;
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extern FILE *logfile;
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extern int loglevel; |
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|
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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" |
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#undef DEF
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NB_OPS, |
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}; |
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|
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#include "gen-op.h" |
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|
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static GenOpFunc1 *gen_test_cc[14] = { |
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gen_op_test_eq, |
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gen_op_test_ne, |
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gen_op_test_cs, |
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gen_op_test_cc, |
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gen_op_test_mi, |
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gen_op_test_pl, |
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gen_op_test_vs, |
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gen_op_test_vc, |
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gen_op_test_hi, |
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gen_op_test_ls, |
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gen_op_test_ge, |
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gen_op_test_lt, |
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gen_op_test_gt, |
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gen_op_test_le, |
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}; |
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|
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const uint8_t table_logic_cc[16] = { |
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1, /* and */ |
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1, /* xor */ |
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0, /* sub */ |
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0, /* rsb */ |
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0, /* add */ |
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0, /* adc */ |
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0, /* sbc */ |
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0, /* rsc */ |
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1, /* andl */ |
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1, /* xorl */ |
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0, /* cmp */ |
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0, /* cmn */ |
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1, /* orr */ |
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1, /* mov */ |
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1, /* bic */ |
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1, /* mvn */ |
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}; |
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|
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static GenOpFunc1 *gen_shift_T1_im[4] = { |
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gen_op_shll_T1_im, |
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gen_op_shrl_T1_im, |
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gen_op_sarl_T1_im, |
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gen_op_rorl_T1_im, |
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}; |
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|
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static GenOpFunc *gen_shift_T1_0[4] = { |
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NULL,
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gen_op_shrl_T1_0, |
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gen_op_sarl_T1_0, |
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gen_op_rrxl_T1, |
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}; |
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|
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static GenOpFunc1 *gen_shift_T2_im[4] = { |
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gen_op_shll_T2_im, |
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gen_op_shrl_T2_im, |
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gen_op_sarl_T2_im, |
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gen_op_rorl_T2_im, |
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}; |
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|
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static GenOpFunc *gen_shift_T2_0[4] = { |
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NULL,
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gen_op_shrl_T2_0, |
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gen_op_sarl_T2_0, |
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gen_op_rrxl_T2, |
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}; |
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|
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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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}; |
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static GenOpFunc *gen_shift_T1_0_cc[4] = { |
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NULL,
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gen_op_shrl_T1_0_cc, |
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gen_op_sarl_T1_0_cc, |
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gen_op_rrxl_T1_cc, |
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}; |
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|
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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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}; |
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static GenOpFunc *gen_shift_T1_T0_cc[4] = { |
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gen_op_shll_T1_T0_cc, |
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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, |
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}; |
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|
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static GenOpFunc *gen_op_movl_TN_reg[3][16] = { |
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{
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gen_op_movl_T0_r0, |
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gen_op_movl_T0_r1, |
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gen_op_movl_T0_r2, |
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gen_op_movl_T0_r3, |
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gen_op_movl_T0_r4, |
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gen_op_movl_T0_r5, |
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gen_op_movl_T0_r6, |
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gen_op_movl_T0_r7, |
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gen_op_movl_T0_r8, |
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gen_op_movl_T0_r9, |
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gen_op_movl_T0_r10, |
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gen_op_movl_T0_r11, |
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gen_op_movl_T0_r12, |
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gen_op_movl_T0_r13, |
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gen_op_movl_T0_r14, |
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gen_op_movl_T0_r15, |
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}, |
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{
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gen_op_movl_T1_r0, |
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gen_op_movl_T1_r1, |
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gen_op_movl_T1_r2, |
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gen_op_movl_T1_r3, |
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gen_op_movl_T1_r4, |
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gen_op_movl_T1_r5, |
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gen_op_movl_T1_r6, |
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gen_op_movl_T1_r7, |
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gen_op_movl_T1_r8, |
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gen_op_movl_T1_r9, |
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gen_op_movl_T1_r10, |
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gen_op_movl_T1_r11, |
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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, |
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gen_op_movl_T2_r1, |
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gen_op_movl_T2_r2, |
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gen_op_movl_T2_r3, |
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gen_op_movl_T2_r4, |
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gen_op_movl_T2_r5, |
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gen_op_movl_T2_r6, |
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gen_op_movl_T2_r7, |
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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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}, |
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}; |
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|
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static GenOpFunc *gen_op_movl_reg_TN[2][16] = { |
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{
|
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gen_op_movl_r0_T0, |
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gen_op_movl_r1_T0, |
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gen_op_movl_r2_T0, |
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gen_op_movl_r3_T0, |
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gen_op_movl_r4_T0, |
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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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}; |
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|
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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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}; |
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|
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static GenOpFunc1 *gen_shift_T0_im_thumb[3] = { |
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gen_op_shll_T0_im_thumb, |
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gen_op_shrl_T0_im_thumb, |
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gen_op_sarl_T0_im_thumb, |
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}; |
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|
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static inline void gen_bx(DisasContext *s) |
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{
|
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s->is_jmp = DISAS_UPDATE; |
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gen_op_bx_T0(); |
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} |
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|
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|
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#if defined(CONFIG_USER_ONLY)
|
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#define gen_ldst(name, s) gen_op_##name##_raw() |
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#else
|
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#define gen_ldst(name, s) do { \ |
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s->is_mem = 1; \
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if (IS_USER(s)) \
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gen_op_##name##_user(); \ |
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else \
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gen_op_##name##_kernel(); \ |
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} while (0) |
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#endif
|
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|
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static inline void gen_movl_TN_reg(DisasContext *s, int reg, int t) |
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{
|
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int val;
|
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|
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if (reg == 15) { |
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/* normaly, since we updated PC, we need only to add one insn */
|
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if (s->thumb)
|
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val = (long)s->pc + 2; |
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else
|
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val = (long)s->pc + 4; |
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gen_op_movl_TN_im[t](val); |
| 313 |
} else {
|
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gen_op_movl_TN_reg[t][reg](); |
| 315 |
} |
| 316 |
} |
| 317 |
|
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static inline void gen_movl_T0_reg(DisasContext *s, int reg) |
| 319 |
{
|
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gen_movl_TN_reg(s, reg, 0);
|
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} |
| 322 |
|
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static inline void gen_movl_T1_reg(DisasContext *s, int reg) |
| 324 |
{
|
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gen_movl_TN_reg(s, reg, 1);
|
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} |
| 327 |
|
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static inline void gen_movl_T2_reg(DisasContext *s, int reg) |
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{
|
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gen_movl_TN_reg(s, reg, 2);
|
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} |
| 332 |
|
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static inline void gen_movl_reg_TN(DisasContext *s, int reg, int t) |
| 334 |
{
|
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gen_op_movl_reg_TN[t][reg](); |
| 336 |
if (reg == 15) { |
| 337 |
s->is_jmp = DISAS_JUMP; |
| 338 |
} |
| 339 |
} |
| 340 |
|
| 341 |
static inline void gen_movl_reg_T0(DisasContext *s, int reg) |
| 342 |
{
|
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gen_movl_reg_TN(s, reg, 0);
|
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} |
| 345 |
|
| 346 |
static inline void gen_movl_reg_T1(DisasContext *s, int reg) |
| 347 |
{
|
| 348 |
gen_movl_reg_TN(s, reg, 1);
|
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} |
| 350 |
|
| 351 |
/* Force a TB lookup after an instruction that changes the CPU state. */
|
| 352 |
static inline void gen_lookup_tb(DisasContext *s) |
| 353 |
{
|
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gen_op_movl_T0_im(s->pc); |
| 355 |
gen_movl_reg_T0(s, 15);
|
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s->is_jmp = DISAS_UPDATE; |
| 357 |
} |
| 358 |
|
| 359 |
static inline void gen_add_data_offset(DisasContext *s, unsigned int insn) |
| 360 |
{
|
| 361 |
int val, rm, shift, shiftop;
|
| 362 |
|
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if (!(insn & (1 << 25))) { |
| 364 |
/* immediate */
|
| 365 |
val = insn & 0xfff;
|
| 366 |
if (!(insn & (1 << 23))) |
| 367 |
val = -val; |
| 368 |
if (val != 0) |
| 369 |
gen_op_addl_T1_im(val); |
| 370 |
} else {
|
| 371 |
/* shift/register */
|
| 372 |
rm = (insn) & 0xf;
|
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shift = (insn >> 7) & 0x1f; |
| 374 |
gen_movl_T2_reg(s, rm); |
| 375 |
shiftop = (insn >> 5) & 3; |
| 376 |
if (shift != 0) { |
| 377 |
gen_shift_T2_im[shiftop](shift); |
| 378 |
} else if (shiftop != 0) { |
| 379 |
gen_shift_T2_0[shiftop](); |
| 380 |
} |
| 381 |
if (!(insn & (1 << 23))) |
| 382 |
gen_op_subl_T1_T2(); |
| 383 |
else
|
| 384 |
gen_op_addl_T1_T2(); |
| 385 |
} |
| 386 |
} |
| 387 |
|
| 388 |
static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn, |
| 389 |
int extra)
|
| 390 |
{
|
| 391 |
int val, rm;
|
| 392 |
|
| 393 |
if (insn & (1 << 22)) { |
| 394 |
/* immediate */
|
| 395 |
val = (insn & 0xf) | ((insn >> 4) & 0xf0); |
| 396 |
if (!(insn & (1 << 23))) |
| 397 |
val = -val; |
| 398 |
val += extra; |
| 399 |
if (val != 0) |
| 400 |
gen_op_addl_T1_im(val); |
| 401 |
} else {
|
| 402 |
/* register */
|
| 403 |
if (extra)
|
| 404 |
gen_op_addl_T1_im(extra); |
| 405 |
rm = (insn) & 0xf;
|
| 406 |
gen_movl_T2_reg(s, rm); |
| 407 |
if (!(insn & (1 << 23))) |
| 408 |
gen_op_subl_T1_T2(); |
| 409 |
else
|
| 410 |
gen_op_addl_T1_T2(); |
| 411 |
} |
| 412 |
} |
| 413 |
|
| 414 |
#define VFP_OP(name) \
|
| 415 |
static inline void gen_vfp_##name(int dp) \ |
| 416 |
{ \
|
| 417 |
if (dp) \
|
| 418 |
gen_op_vfp_##name##d(); \ |
| 419 |
else \
|
| 420 |
gen_op_vfp_##name##s(); \ |
| 421 |
} |
| 422 |
|
| 423 |
VFP_OP(add) |
| 424 |
VFP_OP(sub) |
| 425 |
VFP_OP(mul) |
| 426 |
VFP_OP(div) |
| 427 |
VFP_OP(neg) |
| 428 |
VFP_OP(abs) |
| 429 |
VFP_OP(sqrt) |
| 430 |
VFP_OP(cmp) |
| 431 |
VFP_OP(cmpe) |
| 432 |
VFP_OP(F1_ld0) |
| 433 |
VFP_OP(uito) |
| 434 |
VFP_OP(sito) |
| 435 |
VFP_OP(toui) |
| 436 |
VFP_OP(touiz) |
| 437 |
VFP_OP(tosi) |
| 438 |
VFP_OP(tosiz) |
| 439 |
|
| 440 |
#undef VFP_OP
|
| 441 |
|
| 442 |
static inline void gen_vfp_ld(DisasContext *s, int dp) |
| 443 |
{
|
| 444 |
if (dp)
|
| 445 |
gen_ldst(vfp_ldd, s); |
| 446 |
else
|
| 447 |
gen_ldst(vfp_lds, s); |
| 448 |
} |
| 449 |
|
| 450 |
static inline void gen_vfp_st(DisasContext *s, int dp) |
| 451 |
{
|
| 452 |
if (dp)
|
| 453 |
gen_ldst(vfp_std, s); |
| 454 |
else
|
| 455 |
gen_ldst(vfp_sts, s); |
| 456 |
} |
| 457 |
|
| 458 |
static inline long |
| 459 |
vfp_reg_offset (int dp, int reg) |
| 460 |
{
|
| 461 |
if (dp)
|
| 462 |
return offsetof(CPUARMState, vfp.regs[reg]);
|
| 463 |
else if (reg & 1) { |
| 464 |
return offsetof(CPUARMState, vfp.regs[reg >> 1]) |
| 465 |
+ offsetof(CPU_DoubleU, l.upper); |
| 466 |
} else {
|
| 467 |
return offsetof(CPUARMState, vfp.regs[reg >> 1]) |
| 468 |
+ offsetof(CPU_DoubleU, l.lower); |
| 469 |
} |
| 470 |
} |
| 471 |
static inline void gen_mov_F0_vreg(int dp, int reg) |
| 472 |
{
|
| 473 |
if (dp)
|
| 474 |
gen_op_vfp_getreg_F0d(vfp_reg_offset(dp, reg)); |
| 475 |
else
|
| 476 |
gen_op_vfp_getreg_F0s(vfp_reg_offset(dp, reg)); |
| 477 |
} |
| 478 |
|
| 479 |
static inline void gen_mov_F1_vreg(int dp, int reg) |
| 480 |
{
|
| 481 |
if (dp)
|
| 482 |
gen_op_vfp_getreg_F1d(vfp_reg_offset(dp, reg)); |
| 483 |
else
|
| 484 |
gen_op_vfp_getreg_F1s(vfp_reg_offset(dp, reg)); |
| 485 |
} |
| 486 |
|
| 487 |
static inline void gen_mov_vreg_F0(int dp, int reg) |
| 488 |
{
|
| 489 |
if (dp)
|
| 490 |
gen_op_vfp_setreg_F0d(vfp_reg_offset(dp, reg)); |
| 491 |
else
|
| 492 |
gen_op_vfp_setreg_F0s(vfp_reg_offset(dp, reg)); |
| 493 |
} |
| 494 |
|
| 495 |
/* Disassemble system coprocessor (cp15) instruction. Return nonzero if
|
| 496 |
instruction is not defined. */
|
| 497 |
static int disas_cp15_insn(DisasContext *s, uint32_t insn) |
| 498 |
{
|
| 499 |
uint32_t rd; |
| 500 |
|
| 501 |
/* ??? Some cp15 registers are accessible from userspace. */
|
| 502 |
if (IS_USER(s)) {
|
| 503 |
return 1; |
| 504 |
} |
| 505 |
if ((insn & 0x0fff0fff) == 0x0e070f90 |
| 506 |
|| (insn & 0x0fff0fff) == 0x0e070f58) { |
| 507 |
/* Wait for interrupt. */
|
| 508 |
gen_op_movl_T0_im((long)s->pc);
|
| 509 |
gen_op_movl_reg_TN[0][15](); |
| 510 |
gen_op_wfi(); |
| 511 |
s->is_jmp = DISAS_JUMP; |
| 512 |
return 0; |
| 513 |
} |
| 514 |
rd = (insn >> 12) & 0xf; |
| 515 |
if (insn & (1 << 20)) { |
| 516 |
gen_op_movl_T0_cp15(insn); |
| 517 |
/* If the destination register is r15 then sets condition codes. */
|
| 518 |
if (rd != 15) |
| 519 |
gen_movl_reg_T0(s, rd); |
| 520 |
} else {
|
| 521 |
gen_movl_T0_reg(s, rd); |
| 522 |
gen_op_movl_cp15_T0(insn); |
| 523 |
} |
| 524 |
gen_lookup_tb(s); |
| 525 |
return 0; |
| 526 |
} |
| 527 |
|
| 528 |
/* Disassemble a VFP instruction. Returns nonzero if an error occured
|
| 529 |
(ie. an undefined instruction). */
|
| 530 |
static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn) |
| 531 |
{
|
| 532 |
uint32_t rd, rn, rm, op, i, n, offset, delta_d, delta_m, bank_mask; |
| 533 |
int dp, veclen;
|
| 534 |
|
| 535 |
if (!arm_feature(env, ARM_FEATURE_VFP))
|
| 536 |
return 1; |
| 537 |
|
| 538 |
if ((env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) == 0) { |
| 539 |
/* VFP disabled. Only allow fmxr/fmrx to/from fpexc and fpsid. */
|
| 540 |
if ((insn & 0x0fe00fff) != 0x0ee00a10) |
| 541 |
return 1; |
| 542 |
rn = (insn >> 16) & 0xf; |
| 543 |
if (rn != 0 && rn != 8) |
| 544 |
return 1; |
| 545 |
} |
| 546 |
dp = ((insn & 0xf00) == 0xb00); |
| 547 |
switch ((insn >> 24) & 0xf) { |
| 548 |
case 0xe: |
| 549 |
if (insn & (1 << 4)) { |
| 550 |
/* single register transfer */
|
| 551 |
if ((insn & 0x6f) != 0x00) |
| 552 |
return 1; |
| 553 |
rd = (insn >> 12) & 0xf; |
| 554 |
if (dp) {
|
| 555 |
if (insn & 0x80) |
| 556 |
return 1; |
| 557 |
rn = (insn >> 16) & 0xf; |
| 558 |
/* Get the existing value even for arm->vfp moves because
|
| 559 |
we only set half the register. */
|
| 560 |
gen_mov_F0_vreg(1, rn);
|
| 561 |
gen_op_vfp_mrrd(); |
| 562 |
if (insn & (1 << 20)) { |
| 563 |
/* vfp->arm */
|
| 564 |
if (insn & (1 << 21)) |
| 565 |
gen_movl_reg_T1(s, rd); |
| 566 |
else
|
| 567 |
gen_movl_reg_T0(s, rd); |
| 568 |
} else {
|
| 569 |
/* arm->vfp */
|
| 570 |
if (insn & (1 << 21)) |
| 571 |
gen_movl_T1_reg(s, rd); |
| 572 |
else
|
| 573 |
gen_movl_T0_reg(s, rd); |
| 574 |
gen_op_vfp_mdrr(); |
| 575 |
gen_mov_vreg_F0(dp, rn); |
| 576 |
} |
| 577 |
} else {
|
| 578 |
rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
| 579 |
if (insn & (1 << 20)) { |
| 580 |
/* vfp->arm */
|
| 581 |
if (insn & (1 << 21)) { |
| 582 |
/* system register */
|
| 583 |
rn >>= 1;
|
| 584 |
switch (rn) {
|
| 585 |
case ARM_VFP_FPSID:
|
| 586 |
case ARM_VFP_FPEXC:
|
| 587 |
case ARM_VFP_FPINST:
|
| 588 |
case ARM_VFP_FPINST2:
|
| 589 |
gen_op_vfp_movl_T0_xreg(rn); |
| 590 |
break;
|
| 591 |
case ARM_VFP_FPSCR:
|
| 592 |
if (rd == 15) |
| 593 |
gen_op_vfp_movl_T0_fpscr_flags(); |
| 594 |
else
|
| 595 |
gen_op_vfp_movl_T0_fpscr(); |
| 596 |
break;
|
| 597 |
default:
|
| 598 |
return 1; |
| 599 |
} |
| 600 |
} else {
|
| 601 |
gen_mov_F0_vreg(0, rn);
|
| 602 |
gen_op_vfp_mrs(); |
| 603 |
} |
| 604 |
if (rd == 15) { |
| 605 |
/* Set the 4 flag bits in the CPSR. */
|
| 606 |
gen_op_movl_cpsr_T0(0xf0000000);
|
| 607 |
} else
|
| 608 |
gen_movl_reg_T0(s, rd); |
| 609 |
} else {
|
| 610 |
/* arm->vfp */
|
| 611 |
gen_movl_T0_reg(s, rd); |
| 612 |
if (insn & (1 << 21)) { |
| 613 |
rn >>= 1;
|
| 614 |
/* system register */
|
| 615 |
switch (rn) {
|
| 616 |
case ARM_VFP_FPSID:
|
| 617 |
/* Writes are ignored. */
|
| 618 |
break;
|
| 619 |
case ARM_VFP_FPSCR:
|
| 620 |
gen_op_vfp_movl_fpscr_T0(); |
| 621 |
gen_lookup_tb(s); |
| 622 |
break;
|
| 623 |
case ARM_VFP_FPEXC:
|
| 624 |
gen_op_vfp_movl_xreg_T0(rn); |
| 625 |
gen_lookup_tb(s); |
| 626 |
break;
|
| 627 |
case ARM_VFP_FPINST:
|
| 628 |
case ARM_VFP_FPINST2:
|
| 629 |
gen_op_vfp_movl_xreg_T0(rn); |
| 630 |
break;
|
| 631 |
default:
|
| 632 |
return 1; |
| 633 |
} |
| 634 |
} else {
|
| 635 |
gen_op_vfp_msr(); |
| 636 |
gen_mov_vreg_F0(0, rn);
|
| 637 |
} |
| 638 |
} |
| 639 |
} |
| 640 |
} else {
|
| 641 |
/* data processing */
|
| 642 |
/* The opcode is in bits 23, 21, 20 and 6. */
|
| 643 |
op = ((insn >> 20) & 8) | ((insn >> 19) & 6) | ((insn >> 6) & 1); |
| 644 |
if (dp) {
|
| 645 |
if (op == 15) { |
| 646 |
/* rn is opcode */
|
| 647 |
rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
| 648 |
} else {
|
| 649 |
/* rn is register number */
|
| 650 |
if (insn & (1 << 7)) |
| 651 |
return 1; |
| 652 |
rn = (insn >> 16) & 0xf; |
| 653 |
} |
| 654 |
|
| 655 |
if (op == 15 && (rn == 15 || rn > 17)) { |
| 656 |
/* Integer or single precision destination. */
|
| 657 |
rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
| 658 |
} else {
|
| 659 |
if (insn & (1 << 22)) |
| 660 |
return 1; |
| 661 |
rd = (insn >> 12) & 0xf; |
| 662 |
} |
| 663 |
|
| 664 |
if (op == 15 && (rn == 16 || rn == 17)) { |
| 665 |
/* Integer source. */
|
| 666 |
rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
| 667 |
} else {
|
| 668 |
if (insn & (1 << 5)) |
| 669 |
return 1; |
| 670 |
rm = insn & 0xf;
|
| 671 |
} |
| 672 |
} else {
|
| 673 |
rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
| 674 |
if (op == 15 && rn == 15) { |
| 675 |
/* Double precision destination. */
|
| 676 |
if (insn & (1 << 22)) |
| 677 |
return 1; |
| 678 |
rd = (insn >> 12) & 0xf; |
| 679 |
} else
|
| 680 |
rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
| 681 |
rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
| 682 |
} |
| 683 |
|
| 684 |
veclen = env->vfp.vec_len; |
| 685 |
if (op == 15 && rn > 3) |
| 686 |
veclen = 0;
|
| 687 |
|
| 688 |
/* Shut up compiler warnings. */
|
| 689 |
delta_m = 0;
|
| 690 |
delta_d = 0;
|
| 691 |
bank_mask = 0;
|
| 692 |
|
| 693 |
if (veclen > 0) { |
| 694 |
if (dp)
|
| 695 |
bank_mask = 0xc;
|
| 696 |
else
|
| 697 |
bank_mask = 0x18;
|
| 698 |
|
| 699 |
/* Figure out what type of vector operation this is. */
|
| 700 |
if ((rd & bank_mask) == 0) { |
| 701 |
/* scalar */
|
| 702 |
veclen = 0;
|
| 703 |
} else {
|
| 704 |
if (dp)
|
| 705 |
delta_d = (env->vfp.vec_stride >> 1) + 1; |
| 706 |
else
|
| 707 |
delta_d = env->vfp.vec_stride + 1;
|
| 708 |
|
| 709 |
if ((rm & bank_mask) == 0) { |
| 710 |
/* mixed scalar/vector */
|
| 711 |
delta_m = 0;
|
| 712 |
} else {
|
| 713 |
/* vector */
|
| 714 |
delta_m = delta_d; |
| 715 |
} |
| 716 |
} |
| 717 |
} |
| 718 |
|
| 719 |
/* Load the initial operands. */
|
| 720 |
if (op == 15) { |
| 721 |
switch (rn) {
|
| 722 |
case 16: |
| 723 |
case 17: |
| 724 |
/* Integer source */
|
| 725 |
gen_mov_F0_vreg(0, rm);
|
| 726 |
break;
|
| 727 |
case 8: |
| 728 |
case 9: |
| 729 |
/* Compare */
|
| 730 |
gen_mov_F0_vreg(dp, rd); |
| 731 |
gen_mov_F1_vreg(dp, rm); |
| 732 |
break;
|
| 733 |
case 10: |
| 734 |
case 11: |
| 735 |
/* Compare with zero */
|
| 736 |
gen_mov_F0_vreg(dp, rd); |
| 737 |
gen_vfp_F1_ld0(dp); |
| 738 |
break;
|
| 739 |
default:
|
| 740 |
/* One source operand. */
|
| 741 |
gen_mov_F0_vreg(dp, rm); |
| 742 |
} |
| 743 |
} else {
|
| 744 |
/* Two source operands. */
|
| 745 |
gen_mov_F0_vreg(dp, rn); |
| 746 |
gen_mov_F1_vreg(dp, rm); |
| 747 |
} |
| 748 |
|
| 749 |
for (;;) {
|
| 750 |
/* Perform the calculation. */
|
| 751 |
switch (op) {
|
| 752 |
case 0: /* mac: fd + (fn * fm) */ |
| 753 |
gen_vfp_mul(dp); |
| 754 |
gen_mov_F1_vreg(dp, rd); |
| 755 |
gen_vfp_add(dp); |
| 756 |
break;
|
| 757 |
case 1: /* nmac: fd - (fn * fm) */ |
| 758 |
gen_vfp_mul(dp); |
| 759 |
gen_vfp_neg(dp); |
| 760 |
gen_mov_F1_vreg(dp, rd); |
| 761 |
gen_vfp_add(dp); |
| 762 |
break;
|
| 763 |
case 2: /* msc: -fd + (fn * fm) */ |
| 764 |
gen_vfp_mul(dp); |
| 765 |
gen_mov_F1_vreg(dp, rd); |
| 766 |
gen_vfp_sub(dp); |
| 767 |
break;
|
| 768 |
case 3: /* nmsc: -fd - (fn * fm) */ |
| 769 |
gen_vfp_mul(dp); |
| 770 |
gen_mov_F1_vreg(dp, rd); |
| 771 |
gen_vfp_add(dp); |
| 772 |
gen_vfp_neg(dp); |
| 773 |
break;
|
| 774 |
case 4: /* mul: fn * fm */ |
| 775 |
gen_vfp_mul(dp); |
| 776 |
break;
|
| 777 |
case 5: /* nmul: -(fn * fm) */ |
| 778 |
gen_vfp_mul(dp); |
| 779 |
gen_vfp_neg(dp); |
| 780 |
break;
|
| 781 |
case 6: /* add: fn + fm */ |
| 782 |
gen_vfp_add(dp); |
| 783 |
break;
|
| 784 |
case 7: /* sub: fn - fm */ |
| 785 |
gen_vfp_sub(dp); |
| 786 |
break;
|
| 787 |
case 8: /* div: fn / fm */ |
| 788 |
gen_vfp_div(dp); |
| 789 |
break;
|
| 790 |
case 15: /* extension space */ |
| 791 |
switch (rn) {
|
| 792 |
case 0: /* cpy */ |
| 793 |
/* no-op */
|
| 794 |
break;
|
| 795 |
case 1: /* abs */ |
| 796 |
gen_vfp_abs(dp); |
| 797 |
break;
|
| 798 |
case 2: /* neg */ |
| 799 |
gen_vfp_neg(dp); |
| 800 |
break;
|
| 801 |
case 3: /* sqrt */ |
| 802 |
gen_vfp_sqrt(dp); |
| 803 |
break;
|
| 804 |
case 8: /* cmp */ |
| 805 |
gen_vfp_cmp(dp); |
| 806 |
break;
|
| 807 |
case 9: /* cmpe */ |
| 808 |
gen_vfp_cmpe(dp); |
| 809 |
break;
|
| 810 |
case 10: /* cmpz */ |
| 811 |
gen_vfp_cmp(dp); |
| 812 |
break;
|
| 813 |
case 11: /* cmpez */ |
| 814 |
gen_vfp_F1_ld0(dp); |
| 815 |
gen_vfp_cmpe(dp); |
| 816 |
break;
|
| 817 |
case 15: /* single<->double conversion */ |
| 818 |
if (dp)
|
| 819 |
gen_op_vfp_fcvtsd(); |
| 820 |
else
|
| 821 |
gen_op_vfp_fcvtds(); |
| 822 |
break;
|
| 823 |
case 16: /* fuito */ |
| 824 |
gen_vfp_uito(dp); |
| 825 |
break;
|
| 826 |
case 17: /* fsito */ |
| 827 |
gen_vfp_sito(dp); |
| 828 |
break;
|
| 829 |
case 24: /* ftoui */ |
| 830 |
gen_vfp_toui(dp); |
| 831 |
break;
|
| 832 |
case 25: /* ftouiz */ |
| 833 |
gen_vfp_touiz(dp); |
| 834 |
break;
|
| 835 |
case 26: /* ftosi */ |
| 836 |
gen_vfp_tosi(dp); |
| 837 |
break;
|
| 838 |
case 27: /* ftosiz */ |
| 839 |
gen_vfp_tosiz(dp); |
| 840 |
break;
|
| 841 |
default: /* undefined */ |
| 842 |
printf ("rn:%d\n", rn);
|
| 843 |
return 1; |
| 844 |
} |
| 845 |
break;
|
| 846 |
default: /* undefined */ |
| 847 |
printf ("op:%d\n", op);
|
| 848 |
return 1; |
| 849 |
} |
| 850 |
|
| 851 |
/* Write back the result. */
|
| 852 |
if (op == 15 && (rn >= 8 && rn <= 11)) |
| 853 |
; /* Comparison, do nothing. */
|
| 854 |
else if (op == 15 && rn > 17) |
| 855 |
/* Integer result. */
|
| 856 |
gen_mov_vreg_F0(0, rd);
|
| 857 |
else if (op == 15 && rn == 15) |
| 858 |
/* conversion */
|
| 859 |
gen_mov_vreg_F0(!dp, rd); |
| 860 |
else
|
| 861 |
gen_mov_vreg_F0(dp, rd); |
| 862 |
|
| 863 |
/* break out of the loop if we have finished */
|
| 864 |
if (veclen == 0) |
| 865 |
break;
|
| 866 |
|
| 867 |
if (op == 15 && delta_m == 0) { |
| 868 |
/* single source one-many */
|
| 869 |
while (veclen--) {
|
| 870 |
rd = ((rd + delta_d) & (bank_mask - 1))
|
| 871 |
| (rd & bank_mask); |
| 872 |
gen_mov_vreg_F0(dp, rd); |
| 873 |
} |
| 874 |
break;
|
| 875 |
} |
| 876 |
/* Setup the next operands. */
|
| 877 |
veclen--; |
| 878 |
rd = ((rd + delta_d) & (bank_mask - 1))
|
| 879 |
| (rd & bank_mask); |
| 880 |
|
| 881 |
if (op == 15) { |
| 882 |
/* One source operand. */
|
| 883 |
rm = ((rm + delta_m) & (bank_mask - 1))
|
| 884 |
| (rm & bank_mask); |
| 885 |
gen_mov_F0_vreg(dp, rm); |
| 886 |
} else {
|
| 887 |
/* Two source operands. */
|
| 888 |
rn = ((rn + delta_d) & (bank_mask - 1))
|
| 889 |
| (rn & bank_mask); |
| 890 |
gen_mov_F0_vreg(dp, rn); |
| 891 |
if (delta_m) {
|
| 892 |
rm = ((rm + delta_m) & (bank_mask - 1))
|
| 893 |
| (rm & bank_mask); |
| 894 |
gen_mov_F1_vreg(dp, rm); |
| 895 |
} |
| 896 |
} |
| 897 |
} |
| 898 |
} |
| 899 |
break;
|
| 900 |
case 0xc: |
| 901 |
case 0xd: |
| 902 |
if (dp && (insn & (1 << 22))) { |
| 903 |
/* two-register transfer */
|
| 904 |
rn = (insn >> 16) & 0xf; |
| 905 |
rd = (insn >> 12) & 0xf; |
| 906 |
if (dp) {
|
| 907 |
if (insn & (1 << 5)) |
| 908 |
return 1; |
| 909 |
rm = insn & 0xf;
|
| 910 |
} else
|
| 911 |
rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
| 912 |
|
| 913 |
if (insn & (1 << 20)) { |
| 914 |
/* vfp->arm */
|
| 915 |
if (dp) {
|
| 916 |
gen_mov_F0_vreg(1, rm);
|
| 917 |
gen_op_vfp_mrrd(); |
| 918 |
gen_movl_reg_T0(s, rd); |
| 919 |
gen_movl_reg_T1(s, rn); |
| 920 |
} else {
|
| 921 |
gen_mov_F0_vreg(0, rm);
|
| 922 |
gen_op_vfp_mrs(); |
| 923 |
gen_movl_reg_T0(s, rn); |
| 924 |
gen_mov_F0_vreg(0, rm + 1); |
| 925 |
gen_op_vfp_mrs(); |
| 926 |
gen_movl_reg_T0(s, rd); |
| 927 |
} |
| 928 |
} else {
|
| 929 |
/* arm->vfp */
|
| 930 |
if (dp) {
|
| 931 |
gen_movl_T0_reg(s, rd); |
| 932 |
gen_movl_T1_reg(s, rn); |
| 933 |
gen_op_vfp_mdrr(); |
| 934 |
gen_mov_vreg_F0(1, rm);
|
| 935 |
} else {
|
| 936 |
gen_movl_T0_reg(s, rn); |
| 937 |
gen_op_vfp_msr(); |
| 938 |
gen_mov_vreg_F0(0, rm);
|
| 939 |
gen_movl_T0_reg(s, rd); |
| 940 |
gen_op_vfp_msr(); |
| 941 |
gen_mov_vreg_F0(0, rm + 1); |
| 942 |
} |
| 943 |
} |
| 944 |
} else {
|
| 945 |
/* Load/store */
|
| 946 |
rn = (insn >> 16) & 0xf; |
| 947 |
if (dp)
|
| 948 |
rd = (insn >> 12) & 0xf; |
| 949 |
else
|
| 950 |
rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
| 951 |
gen_movl_T1_reg(s, rn); |
| 952 |
if ((insn & 0x01200000) == 0x01000000) { |
| 953 |
/* Single load/store */
|
| 954 |
offset = (insn & 0xff) << 2; |
| 955 |
if ((insn & (1 << 23)) == 0) |
| 956 |
offset = -offset; |
| 957 |
gen_op_addl_T1_im(offset); |
| 958 |
if (insn & (1 << 20)) { |
| 959 |
gen_vfp_ld(s, dp); |
| 960 |
gen_mov_vreg_F0(dp, rd); |
| 961 |
} else {
|
| 962 |
gen_mov_F0_vreg(dp, rd); |
| 963 |
gen_vfp_st(s, dp); |
| 964 |
} |
| 965 |
} else {
|
| 966 |
/* load/store multiple */
|
| 967 |
if (dp)
|
| 968 |
n = (insn >> 1) & 0x7f; |
| 969 |
else
|
| 970 |
n = insn & 0xff;
|
| 971 |
|
| 972 |
if (insn & (1 << 24)) /* pre-decrement */ |
| 973 |
gen_op_addl_T1_im(-((insn & 0xff) << 2)); |
| 974 |
|
| 975 |
if (dp)
|
| 976 |
offset = 8;
|
| 977 |
else
|
| 978 |
offset = 4;
|
| 979 |
for (i = 0; i < n; i++) { |
| 980 |
if (insn & (1 << 20)) { |
| 981 |
/* load */
|
| 982 |
gen_vfp_ld(s, dp); |
| 983 |
gen_mov_vreg_F0(dp, rd + i); |
| 984 |
} else {
|
| 985 |
/* store */
|
| 986 |
gen_mov_F0_vreg(dp, rd + i); |
| 987 |
gen_vfp_st(s, dp); |
| 988 |
} |
| 989 |
gen_op_addl_T1_im(offset); |
| 990 |
} |
| 991 |
if (insn & (1 << 21)) { |
| 992 |
/* writeback */
|
| 993 |
if (insn & (1 << 24)) |
| 994 |
offset = -offset * n; |
| 995 |
else if (dp && (insn & 1)) |
| 996 |
offset = 4;
|
| 997 |
else
|
| 998 |
offset = 0;
|
| 999 |
|
| 1000 |
if (offset != 0) |
| 1001 |
gen_op_addl_T1_im(offset); |
| 1002 |
gen_movl_reg_T1(s, rn); |
| 1003 |
} |
| 1004 |
} |
| 1005 |
} |
| 1006 |
break;
|
| 1007 |
default:
|
| 1008 |
/* Should never happen. */
|
| 1009 |
return 1; |
| 1010 |
} |
| 1011 |
return 0; |
| 1012 |
} |
| 1013 |
|
| 1014 |
static inline void gen_goto_tb(DisasContext *s, int n, uint32_t dest) |
| 1015 |
{
|
| 1016 |
TranslationBlock *tb; |
| 1017 |
|
| 1018 |
tb = s->tb; |
| 1019 |
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
|
| 1020 |
if (n == 0) |
| 1021 |
gen_op_goto_tb0(TBPARAM(tb)); |
| 1022 |
else
|
| 1023 |
gen_op_goto_tb1(TBPARAM(tb)); |
| 1024 |
gen_op_movl_T0_im(dest); |
| 1025 |
gen_op_movl_r15_T0(); |
| 1026 |
gen_op_movl_T0_im((long)tb + n);
|
| 1027 |
gen_op_exit_tb(); |
| 1028 |
} else {
|
| 1029 |
gen_op_movl_T0_im(dest); |
| 1030 |
gen_op_movl_r15_T0(); |
| 1031 |
gen_op_movl_T0_0(); |
| 1032 |
gen_op_exit_tb(); |
| 1033 |
} |
| 1034 |
} |
| 1035 |
|
| 1036 |
static inline void gen_jmp (DisasContext *s, uint32_t dest) |
| 1037 |
{
|
| 1038 |
if (__builtin_expect(s->singlestep_enabled, 0)) { |
| 1039 |
/* An indirect jump so that we still trigger the debug exception. */
|
| 1040 |
if (s->thumb)
|
| 1041 |
dest |= 1;
|
| 1042 |
gen_op_movl_T0_im(dest); |
| 1043 |
gen_bx(s); |
| 1044 |
} else {
|
| 1045 |
gen_goto_tb(s, 0, dest);
|
| 1046 |
s->is_jmp = DISAS_TB_JUMP; |
| 1047 |
} |
| 1048 |
} |
| 1049 |
|
| 1050 |
static inline void gen_mulxy(int x, int y) |
| 1051 |
{
|
| 1052 |
if (x)
|
| 1053 |
gen_op_sarl_T0_im(16);
|
| 1054 |
else
|
| 1055 |
gen_op_sxth_T0(); |
| 1056 |
if (y)
|
| 1057 |
gen_op_sarl_T1_im(16);
|
| 1058 |
else
|
| 1059 |
gen_op_sxth_T1(); |
| 1060 |
gen_op_mul_T0_T1(); |
| 1061 |
} |
| 1062 |
|
| 1063 |
/* Return the mask of PSR bits set by a MSR instruction. */
|
| 1064 |
static uint32_t msr_mask(DisasContext *s, int flags, int spsr) { |
| 1065 |
uint32_t mask; |
| 1066 |
|
| 1067 |
mask = 0;
|
| 1068 |
if (flags & (1 << 0)) |
| 1069 |
mask |= 0xff;
|
| 1070 |
if (flags & (1 << 1)) |
| 1071 |
mask |= 0xff00;
|
| 1072 |
if (flags & (1 << 2)) |
| 1073 |
mask |= 0xff0000;
|
| 1074 |
if (flags & (1 << 3)) |
| 1075 |
mask |= 0xff000000;
|
| 1076 |
/* Mask out undefined bits. */
|
| 1077 |
mask &= 0xf90f03ff;
|
| 1078 |
/* Mask out state bits. */
|
| 1079 |
if (!spsr)
|
| 1080 |
mask &= ~0x01000020;
|
| 1081 |
/* Mask out privileged bits. */
|
| 1082 |
if (IS_USER(s))
|
| 1083 |
mask &= 0xf80f0200;
|
| 1084 |
return mask;
|
| 1085 |
} |
| 1086 |
|
| 1087 |
/* Returns nonzero if access to the PSR is not permitted. */
|
| 1088 |
static int gen_set_psr_T0(DisasContext *s, uint32_t mask, int spsr) |
| 1089 |
{
|
| 1090 |
if (spsr) {
|
| 1091 |
/* ??? This is also undefined in system mode. */
|
| 1092 |
if (IS_USER(s))
|
| 1093 |
return 1; |
| 1094 |
gen_op_movl_spsr_T0(mask); |
| 1095 |
} else {
|
| 1096 |
gen_op_movl_cpsr_T0(mask); |
| 1097 |
} |
| 1098 |
gen_lookup_tb(s); |
| 1099 |
return 0; |
| 1100 |
} |
| 1101 |
|
| 1102 |
static void gen_exception_return(DisasContext *s) |
| 1103 |
{
|
| 1104 |
gen_op_movl_reg_TN[0][15](); |
| 1105 |
gen_op_movl_T0_spsr(); |
| 1106 |
gen_op_movl_cpsr_T0(0xffffffff);
|
| 1107 |
s->is_jmp = DISAS_UPDATE; |
| 1108 |
} |
| 1109 |
|
| 1110 |
static void disas_arm_insn(CPUState * env, DisasContext *s) |
| 1111 |
{
|
| 1112 |
unsigned int cond, insn, val, op1, i, shift, rm, rs, rn, rd, sh; |
| 1113 |
|
| 1114 |
insn = ldl_code(s->pc); |
| 1115 |
s->pc += 4;
|
| 1116 |
|
| 1117 |
cond = insn >> 28;
|
| 1118 |
if (cond == 0xf){ |
| 1119 |
/* Unconditional instructions. */
|
| 1120 |
if ((insn & 0x0d70f000) == 0x0550f000) |
| 1121 |
return; /* PLD */ |
| 1122 |
else if ((insn & 0x0e000000) == 0x0a000000) { |
| 1123 |
/* branch link and change to thumb (blx <offset>) */
|
| 1124 |
int32_t offset; |
| 1125 |
|
| 1126 |
val = (uint32_t)s->pc; |
| 1127 |
gen_op_movl_T0_im(val); |
| 1128 |
gen_movl_reg_T0(s, 14);
|
| 1129 |
/* Sign-extend the 24-bit offset */
|
| 1130 |
offset = (((int32_t)insn) << 8) >> 8; |
| 1131 |
/* offset * 4 + bit24 * 2 + (thumb bit) */
|
| 1132 |
val += (offset << 2) | ((insn >> 23) & 2) | 1; |
| 1133 |
/* pipeline offset */
|
| 1134 |
val += 4;
|
| 1135 |
gen_op_movl_T0_im(val); |
| 1136 |
gen_bx(s); |
| 1137 |
return;
|
| 1138 |
} else if ((insn & 0x0fe00000) == 0x0c400000) { |
| 1139 |
/* Coprocessor double register transfer. */
|
| 1140 |
} else if ((insn & 0x0f000010) == 0x0e000010) { |
| 1141 |
/* Additional coprocessor register transfer. */
|
| 1142 |
} else if ((insn & 0x0ff10010) == 0x01000000) { |
| 1143 |
/* cps (privileged) */
|
| 1144 |
} else if ((insn & 0x0ffffdff) == 0x01010000) { |
| 1145 |
/* setend */
|
| 1146 |
if (insn & (1 << 9)) { |
| 1147 |
/* BE8 mode not implemented. */
|
| 1148 |
goto illegal_op;
|
| 1149 |
} |
| 1150 |
return;
|
| 1151 |
} |
| 1152 |
goto illegal_op;
|
| 1153 |
} |
| 1154 |
if (cond != 0xe) { |
| 1155 |
/* if not always execute, we generate a conditional jump to
|
| 1156 |
next instruction */
|
| 1157 |
s->condlabel = gen_new_label(); |
| 1158 |
gen_test_cc[cond ^ 1](s->condlabel);
|
| 1159 |
s->condjmp = 1;
|
| 1160 |
//gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc);
|
| 1161 |
//s->is_jmp = DISAS_JUMP_NEXT;
|
| 1162 |
} |
| 1163 |
if ((insn & 0x0f900000) == 0x03000000) { |
| 1164 |
if ((insn & 0x0fb0f000) != 0x0320f000) |
| 1165 |
goto illegal_op;
|
| 1166 |
/* CPSR = immediate */
|
| 1167 |
val = insn & 0xff;
|
| 1168 |
shift = ((insn >> 8) & 0xf) * 2; |
| 1169 |
if (shift)
|
| 1170 |
val = (val >> shift) | (val << (32 - shift));
|
| 1171 |
gen_op_movl_T0_im(val); |
| 1172 |
i = ((insn & (1 << 22)) != 0); |
| 1173 |
if (gen_set_psr_T0(s, msr_mask(s, (insn >> 16) & 0xf, i), i)) |
| 1174 |
goto illegal_op;
|
| 1175 |
} else if ((insn & 0x0f900000) == 0x01000000 |
| 1176 |
&& (insn & 0x00000090) != 0x00000090) { |
| 1177 |
/* miscellaneous instructions */
|
| 1178 |
op1 = (insn >> 21) & 3; |
| 1179 |
sh = (insn >> 4) & 0xf; |
| 1180 |
rm = insn & 0xf;
|
| 1181 |
switch (sh) {
|
| 1182 |
case 0x0: /* move program status register */ |
| 1183 |
if (op1 & 1) { |
| 1184 |
/* PSR = reg */
|
| 1185 |
gen_movl_T0_reg(s, rm); |
| 1186 |
i = ((op1 & 2) != 0); |
| 1187 |
if (gen_set_psr_T0(s, msr_mask(s, (insn >> 16) & 0xf, i), i)) |
| 1188 |
goto illegal_op;
|
| 1189 |
} else {
|
| 1190 |
/* reg = PSR */
|
| 1191 |
rd = (insn >> 12) & 0xf; |
| 1192 |
if (op1 & 2) { |
| 1193 |
if (IS_USER(s))
|
| 1194 |
goto illegal_op;
|
| 1195 |
gen_op_movl_T0_spsr(); |
| 1196 |
} else {
|
| 1197 |
gen_op_movl_T0_cpsr(); |
| 1198 |
} |
| 1199 |
gen_movl_reg_T0(s, rd); |
| 1200 |
} |
| 1201 |
break;
|
| 1202 |
case 0x1: |
| 1203 |
if (op1 == 1) { |
| 1204 |
/* branch/exchange thumb (bx). */
|
| 1205 |
gen_movl_T0_reg(s, rm); |
| 1206 |
gen_bx(s); |
| 1207 |
} else if (op1 == 3) { |
| 1208 |
/* clz */
|
| 1209 |
rd = (insn >> 12) & 0xf; |
| 1210 |
gen_movl_T0_reg(s, rm); |
| 1211 |
gen_op_clz_T0(); |
| 1212 |
gen_movl_reg_T0(s, rd); |
| 1213 |
} else {
|
| 1214 |
goto illegal_op;
|
| 1215 |
} |
| 1216 |
break;
|
| 1217 |
case 0x2: |
| 1218 |
if (op1 == 1) { |
| 1219 |
ARCH(5J); /* bxj */ |
| 1220 |
/* Trivial implementation equivalent to bx. */
|
| 1221 |
gen_movl_T0_reg(s, rm); |
| 1222 |
gen_bx(s); |
| 1223 |
} else {
|
| 1224 |
goto illegal_op;
|
| 1225 |
} |
| 1226 |
break;
|
| 1227 |
case 0x3: |
| 1228 |
if (op1 != 1) |
| 1229 |
goto illegal_op;
|
| 1230 |
|
| 1231 |
/* branch link/exchange thumb (blx) */
|
| 1232 |
val = (uint32_t)s->pc; |
| 1233 |
gen_op_movl_T0_im(val); |
| 1234 |
gen_movl_reg_T0(s, 14);
|
| 1235 |
gen_movl_T0_reg(s, rm); |
| 1236 |
gen_bx(s); |
| 1237 |
break;
|
| 1238 |
case 0x5: /* saturating add/subtract */ |
| 1239 |
rd = (insn >> 12) & 0xf; |
| 1240 |
rn = (insn >> 16) & 0xf; |
| 1241 |
gen_movl_T0_reg(s, rm); |
| 1242 |
gen_movl_T1_reg(s, rn); |
| 1243 |
if (op1 & 2) |
| 1244 |
gen_op_double_T1_saturate(); |
| 1245 |
if (op1 & 1) |
| 1246 |
gen_op_subl_T0_T1_saturate(); |
| 1247 |
else
|
| 1248 |
gen_op_addl_T0_T1_saturate(); |
| 1249 |
gen_movl_reg_T0(s, rd); |
| 1250 |
break;
|
| 1251 |
case 7: /* bkpt */ |
| 1252 |
gen_op_movl_T0_im((long)s->pc - 4); |
| 1253 |
gen_op_movl_reg_TN[0][15](); |
| 1254 |
gen_op_bkpt(); |
| 1255 |
s->is_jmp = DISAS_JUMP; |
| 1256 |
break;
|
| 1257 |
case 0x8: /* signed multiply */ |
| 1258 |
case 0xa: |
| 1259 |
case 0xc: |
| 1260 |
case 0xe: |
| 1261 |
rs = (insn >> 8) & 0xf; |
| 1262 |
rn = (insn >> 12) & 0xf; |
| 1263 |
rd = (insn >> 16) & 0xf; |
| 1264 |
if (op1 == 1) { |
| 1265 |
/* (32 * 16) >> 16 */
|
| 1266 |
gen_movl_T0_reg(s, rm); |
| 1267 |
gen_movl_T1_reg(s, rs); |
| 1268 |
if (sh & 4) |
| 1269 |
gen_op_sarl_T1_im(16);
|
| 1270 |
else
|
| 1271 |
gen_op_sxth_T1(); |
| 1272 |
gen_op_imulw_T0_T1(); |
| 1273 |
if ((sh & 2) == 0) { |
| 1274 |
gen_movl_T1_reg(s, rn); |
| 1275 |
gen_op_addl_T0_T1_setq(); |
| 1276 |
} |
| 1277 |
gen_movl_reg_T0(s, rd); |
| 1278 |
} else {
|
| 1279 |
/* 16 * 16 */
|
| 1280 |
gen_movl_T0_reg(s, rm); |
| 1281 |
gen_movl_T1_reg(s, rs); |
| 1282 |
gen_mulxy(sh & 2, sh & 4); |
| 1283 |
if (op1 == 2) { |
| 1284 |
gen_op_signbit_T1_T0(); |
| 1285 |
gen_op_addq_T0_T1(rn, rd); |
| 1286 |
gen_movl_reg_T0(s, rn); |
| 1287 |
gen_movl_reg_T1(s, rd); |
| 1288 |
} else {
|
| 1289 |
if (op1 == 0) { |
| 1290 |
gen_movl_T1_reg(s, rn); |
| 1291 |
gen_op_addl_T0_T1_setq(); |
| 1292 |
} |
| 1293 |
gen_movl_reg_T0(s, rd); |
| 1294 |
} |
| 1295 |
} |
| 1296 |
break;
|
| 1297 |
default:
|
| 1298 |
goto illegal_op;
|
| 1299 |
} |
| 1300 |
} else if (((insn & 0x0e000000) == 0 && |
| 1301 |
(insn & 0x00000090) != 0x90) || |
| 1302 |
((insn & 0x0e000000) == (1 << 25))) { |
| 1303 |
int set_cc, logic_cc, shiftop;
|
| 1304 |
|
| 1305 |
op1 = (insn >> 21) & 0xf; |
| 1306 |
set_cc = (insn >> 20) & 1; |
| 1307 |
logic_cc = table_logic_cc[op1] & set_cc; |
| 1308 |
|
| 1309 |
/* data processing instruction */
|
| 1310 |
if (insn & (1 << 25)) { |
| 1311 |
/* immediate operand */
|
| 1312 |
val = insn & 0xff;
|
| 1313 |
shift = ((insn >> 8) & 0xf) * 2; |
| 1314 |
if (shift)
|
| 1315 |
val = (val >> shift) | (val << (32 - shift));
|
| 1316 |
gen_op_movl_T1_im(val); |
| 1317 |
if (logic_cc && shift)
|
| 1318 |
gen_op_mov_CF_T1(); |
| 1319 |
} else {
|
| 1320 |
/* register */
|
| 1321 |
rm = (insn) & 0xf;
|
| 1322 |
gen_movl_T1_reg(s, rm); |
| 1323 |
shiftop = (insn >> 5) & 3; |
| 1324 |
if (!(insn & (1 << 4))) { |
| 1325 |
shift = (insn >> 7) & 0x1f; |
| 1326 |
if (shift != 0) { |
| 1327 |
if (logic_cc) {
|
| 1328 |
gen_shift_T1_im_cc[shiftop](shift); |
| 1329 |
} else {
|
| 1330 |
gen_shift_T1_im[shiftop](shift); |
| 1331 |
} |
| 1332 |
} else if (shiftop != 0) { |
| 1333 |
if (logic_cc) {
|
| 1334 |
gen_shift_T1_0_cc[shiftop](); |
| 1335 |
} else {
|
| 1336 |
gen_shift_T1_0[shiftop](); |
| 1337 |
} |
| 1338 |
} |
| 1339 |
} else {
|
| 1340 |
rs = (insn >> 8) & 0xf; |
| 1341 |
gen_movl_T0_reg(s, rs); |
| 1342 |
if (logic_cc) {
|
| 1343 |
gen_shift_T1_T0_cc[shiftop](); |
| 1344 |
} else {
|
| 1345 |
gen_shift_T1_T0[shiftop](); |
| 1346 |
} |
| 1347 |
} |
| 1348 |
} |
| 1349 |
if (op1 != 0x0f && op1 != 0x0d) { |
| 1350 |
rn = (insn >> 16) & 0xf; |
| 1351 |
gen_movl_T0_reg(s, rn); |
| 1352 |
} |
| 1353 |
rd = (insn >> 12) & 0xf; |
| 1354 |
switch(op1) {
|
| 1355 |
case 0x00: |
| 1356 |
gen_op_andl_T0_T1(); |
| 1357 |
gen_movl_reg_T0(s, rd); |
| 1358 |
if (logic_cc)
|
| 1359 |
gen_op_logic_T0_cc(); |
| 1360 |
break;
|
| 1361 |
case 0x01: |
| 1362 |
gen_op_xorl_T0_T1(); |
| 1363 |
gen_movl_reg_T0(s, rd); |
| 1364 |
if (logic_cc)
|
| 1365 |
gen_op_logic_T0_cc(); |
| 1366 |
break;
|
| 1367 |
case 0x02: |
| 1368 |
if (set_cc && rd == 15) { |
| 1369 |
/* SUBS r15, ... is used for exception return. */
|
| 1370 |
if (IS_USER(s))
|
| 1371 |
goto illegal_op;
|
| 1372 |
gen_op_subl_T0_T1_cc(); |
| 1373 |
gen_exception_return(s); |
| 1374 |
} else {
|
| 1375 |
if (set_cc)
|
| 1376 |
gen_op_subl_T0_T1_cc(); |
| 1377 |
else
|
| 1378 |
gen_op_subl_T0_T1(); |
| 1379 |
gen_movl_reg_T0(s, rd); |
| 1380 |
} |
| 1381 |
break;
|
| 1382 |
case 0x03: |
| 1383 |
if (set_cc)
|
| 1384 |
gen_op_rsbl_T0_T1_cc(); |
| 1385 |
else
|
| 1386 |
gen_op_rsbl_T0_T1(); |
| 1387 |
gen_movl_reg_T0(s, rd); |
| 1388 |
break;
|
| 1389 |
case 0x04: |
| 1390 |
if (set_cc)
|
| 1391 |
gen_op_addl_T0_T1_cc(); |
| 1392 |
else
|
| 1393 |
gen_op_addl_T0_T1(); |
| 1394 |
gen_movl_reg_T0(s, rd); |
| 1395 |
break;
|
| 1396 |
case 0x05: |
| 1397 |
if (set_cc)
|
| 1398 |
gen_op_adcl_T0_T1_cc(); |
| 1399 |
else
|
| 1400 |
gen_op_adcl_T0_T1(); |
| 1401 |
gen_movl_reg_T0(s, rd); |
| 1402 |
break;
|
| 1403 |
case 0x06: |
| 1404 |
if (set_cc)
|
| 1405 |
gen_op_sbcl_T0_T1_cc(); |
| 1406 |
else
|
| 1407 |
gen_op_sbcl_T0_T1(); |
| 1408 |
gen_movl_reg_T0(s, rd); |
| 1409 |
break;
|
| 1410 |
case 0x07: |
| 1411 |
if (set_cc)
|
| 1412 |
gen_op_rscl_T0_T1_cc(); |
| 1413 |
else
|
| 1414 |
gen_op_rscl_T0_T1(); |
| 1415 |
gen_movl_reg_T0(s, rd); |
| 1416 |
break;
|
| 1417 |
case 0x08: |
| 1418 |
if (set_cc) {
|
| 1419 |
gen_op_andl_T0_T1(); |
| 1420 |
gen_op_logic_T0_cc(); |
| 1421 |
} |
| 1422 |
break;
|
| 1423 |
case 0x09: |
| 1424 |
if (set_cc) {
|
| 1425 |
gen_op_xorl_T0_T1(); |
| 1426 |
gen_op_logic_T0_cc(); |
| 1427 |
} |
| 1428 |
break;
|
| 1429 |
case 0x0a: |
| 1430 |
if (set_cc) {
|
| 1431 |
gen_op_subl_T0_T1_cc(); |
| 1432 |
} |
| 1433 |
break;
|
| 1434 |
case 0x0b: |
| 1435 |
if (set_cc) {
|
| 1436 |
gen_op_addl_T0_T1_cc(); |
| 1437 |
} |
| 1438 |
break;
|
| 1439 |
case 0x0c: |
| 1440 |
gen_op_orl_T0_T1(); |
| 1441 |
gen_movl_reg_T0(s, rd); |
| 1442 |
if (logic_cc)
|
| 1443 |
gen_op_logic_T0_cc(); |
| 1444 |
break;
|
| 1445 |
case 0x0d: |
| 1446 |
if (logic_cc && rd == 15) { |
| 1447 |
/* MOVS r15, ... is used for exception return. */
|
| 1448 |
if (IS_USER(s))
|
| 1449 |
goto illegal_op;
|
| 1450 |
gen_op_movl_T0_T1(); |
| 1451 |
gen_exception_return(s); |
| 1452 |
} else {
|
| 1453 |
gen_movl_reg_T1(s, rd); |
| 1454 |
if (logic_cc)
|
| 1455 |
gen_op_logic_T1_cc(); |
| 1456 |
} |
| 1457 |
break;
|
| 1458 |
case 0x0e: |
| 1459 |
gen_op_bicl_T0_T1(); |
| 1460 |
gen_movl_reg_T0(s, rd); |
| 1461 |
if (logic_cc)
|
| 1462 |
gen_op_logic_T0_cc(); |
| 1463 |
break;
|
| 1464 |
default:
|
| 1465 |
case 0x0f: |
| 1466 |
gen_op_notl_T1(); |
| 1467 |
gen_movl_reg_T1(s, rd); |
| 1468 |
if (logic_cc)
|
| 1469 |
gen_op_logic_T1_cc(); |
| 1470 |
break;
|
| 1471 |
} |
| 1472 |
} else {
|
| 1473 |
/* other instructions */
|
| 1474 |
op1 = (insn >> 24) & 0xf; |
| 1475 |
switch(op1) {
|
| 1476 |
case 0x0: |
| 1477 |
case 0x1: |
| 1478 |
/* multiplies, extra load/stores */
|
| 1479 |
sh = (insn >> 5) & 3; |
| 1480 |
if (sh == 0) { |
| 1481 |
if (op1 == 0x0) { |
| 1482 |
rd = (insn >> 16) & 0xf; |
| 1483 |
rn = (insn >> 12) & 0xf; |
| 1484 |
rs = (insn >> 8) & 0xf; |
| 1485 |
rm = (insn) & 0xf;
|
| 1486 |
if (((insn >> 22) & 3) == 0) { |
| 1487 |
/* 32 bit mul */
|
| 1488 |
gen_movl_T0_reg(s, rs); |
| 1489 |
gen_movl_T1_reg(s, rm); |
| 1490 |
gen_op_mul_T0_T1(); |
| 1491 |
if (insn & (1 << 21)) { |
| 1492 |
gen_movl_T1_reg(s, rn); |
| 1493 |
gen_op_addl_T0_T1(); |
| 1494 |
} |
| 1495 |
if (insn & (1 << 20)) |
| 1496 |
gen_op_logic_T0_cc(); |
| 1497 |
gen_movl_reg_T0(s, rd); |
| 1498 |
} else {
|
| 1499 |
/* 64 bit mul */
|
| 1500 |
gen_movl_T0_reg(s, rs); |
| 1501 |
gen_movl_T1_reg(s, rm); |
| 1502 |
if (insn & (1 << 22)) |
| 1503 |
gen_op_imull_T0_T1(); |
| 1504 |
else
|
| 1505 |
gen_op_mull_T0_T1(); |
| 1506 |
if (insn & (1 << 21)) /* mult accumulate */ |
| 1507 |
gen_op_addq_T0_T1(rn, rd); |
| 1508 |
if (!(insn & (1 << 23))) { /* double accumulate */ |
| 1509 |
ARCH(6);
|
| 1510 |
gen_op_addq_lo_T0_T1(rn); |
| 1511 |
gen_op_addq_lo_T0_T1(rd); |
| 1512 |
} |
| 1513 |
if (insn & (1 << 20)) |
| 1514 |
gen_op_logicq_cc(); |
| 1515 |
gen_movl_reg_T0(s, rn); |
| 1516 |
gen_movl_reg_T1(s, rd); |
| 1517 |
} |
| 1518 |
} else {
|
| 1519 |
rn = (insn >> 16) & 0xf; |
| 1520 |
rd = (insn >> 12) & 0xf; |
| 1521 |
if (insn & (1 << 23)) { |
| 1522 |
/* load/store exclusive */
|
| 1523 |
goto illegal_op;
|
| 1524 |
} else {
|
| 1525 |
/* SWP instruction */
|
| 1526 |
rm = (insn) & 0xf;
|
| 1527 |
|
| 1528 |
gen_movl_T0_reg(s, rm); |
| 1529 |
gen_movl_T1_reg(s, rn); |
| 1530 |
if (insn & (1 << 22)) { |
| 1531 |
gen_ldst(swpb, s); |
| 1532 |
} else {
|
| 1533 |
gen_ldst(swpl, s); |
| 1534 |
} |
| 1535 |
gen_movl_reg_T0(s, rd); |
| 1536 |
} |
| 1537 |
} |
| 1538 |
} else {
|
| 1539 |
int address_offset;
|
| 1540 |
int load;
|
| 1541 |
/* Misc load/store */
|
| 1542 |
rn = (insn >> 16) & 0xf; |
| 1543 |
rd = (insn >> 12) & 0xf; |
| 1544 |
gen_movl_T1_reg(s, rn); |
| 1545 |
if (insn & (1 << 24)) |
| 1546 |
gen_add_datah_offset(s, insn, 0);
|
| 1547 |
address_offset = 0;
|
| 1548 |
if (insn & (1 << 20)) { |
| 1549 |
/* load */
|
| 1550 |
switch(sh) {
|
| 1551 |
case 1: |
| 1552 |
gen_ldst(lduw, s); |
| 1553 |
break;
|
| 1554 |
case 2: |
| 1555 |
gen_ldst(ldsb, s); |
| 1556 |
break;
|
| 1557 |
default:
|
| 1558 |
case 3: |
| 1559 |
gen_ldst(ldsw, s); |
| 1560 |
break;
|
| 1561 |
} |
| 1562 |
load = 1;
|
| 1563 |
} else if (sh & 2) { |
| 1564 |
/* doubleword */
|
| 1565 |
if (sh & 1) { |
| 1566 |
/* store */
|
| 1567 |
gen_movl_T0_reg(s, rd); |
| 1568 |
gen_ldst(stl, s); |
| 1569 |
gen_op_addl_T1_im(4);
|
| 1570 |
gen_movl_T0_reg(s, rd + 1);
|
| 1571 |
gen_ldst(stl, s); |
| 1572 |
load = 0;
|
| 1573 |
} else {
|
| 1574 |
/* load */
|
| 1575 |
gen_ldst(ldl, s); |
| 1576 |
gen_movl_reg_T0(s, rd); |
| 1577 |
gen_op_addl_T1_im(4);
|
| 1578 |
gen_ldst(ldl, s); |
| 1579 |
rd++; |
| 1580 |
load = 1;
|
| 1581 |
} |
| 1582 |
address_offset = -4;
|
| 1583 |
} else {
|
| 1584 |
/* store */
|
| 1585 |
gen_movl_T0_reg(s, rd); |
| 1586 |
gen_ldst(stw, s); |
| 1587 |
load = 0;
|
| 1588 |
} |
| 1589 |
/* Perform base writeback before the loaded value to
|
| 1590 |
ensure correct behavior with overlapping index registers.
|
| 1591 |
ldrd with base writeback is is undefined if the
|
| 1592 |
destination and index registers overlap. */
|
| 1593 |
if (!(insn & (1 << 24))) { |
| 1594 |
gen_add_datah_offset(s, insn, address_offset); |
| 1595 |
gen_movl_reg_T1(s, rn); |
| 1596 |
} else if (insn & (1 << 21)) { |
| 1597 |
if (address_offset)
|
| 1598 |
gen_op_addl_T1_im(address_offset); |
| 1599 |
gen_movl_reg_T1(s, rn); |
| 1600 |
} |
| 1601 |
if (load) {
|
| 1602 |
/* Complete the load. */
|
| 1603 |
gen_movl_reg_T0(s, rd); |
| 1604 |
} |
| 1605 |
} |
| 1606 |
break;
|
| 1607 |
case 0x4: |
| 1608 |
case 0x5: |
| 1609 |
case 0x6: |
| 1610 |
case 0x7: |
| 1611 |
/* Check for undefined extension instructions
|
| 1612 |
* per the ARM Bible IE:
|
| 1613 |
* xxxx 0111 1111 xxxx xxxx xxxx 1111 xxxx
|
| 1614 |
*/
|
| 1615 |
sh = (0xf << 20) | (0xf << 4); |
| 1616 |
if (op1 == 0x7 && ((insn & sh) == sh)) |
| 1617 |
{
|
| 1618 |
goto illegal_op;
|
| 1619 |
} |
| 1620 |
/* load/store byte/word */
|
| 1621 |
rn = (insn >> 16) & 0xf; |
| 1622 |
rd = (insn >> 12) & 0xf; |
| 1623 |
gen_movl_T1_reg(s, rn); |
| 1624 |
i = (IS_USER(s) || (insn & 0x01200000) == 0x00200000); |
| 1625 |
if (insn & (1 << 24)) |
| 1626 |
gen_add_data_offset(s, insn); |
| 1627 |
if (insn & (1 << 20)) { |
| 1628 |
/* load */
|
| 1629 |
s->is_mem = 1;
|
| 1630 |
#if defined(CONFIG_USER_ONLY)
|
| 1631 |
if (insn & (1 << 22)) |
| 1632 |
gen_op_ldub_raw(); |
| 1633 |
else
|
| 1634 |
gen_op_ldl_raw(); |
| 1635 |
#else
|
| 1636 |
if (insn & (1 << 22)) { |
| 1637 |
if (i)
|
| 1638 |
gen_op_ldub_user(); |
| 1639 |
else
|
| 1640 |
gen_op_ldub_kernel(); |
| 1641 |
} else {
|
| 1642 |
if (i)
|
| 1643 |
gen_op_ldl_user(); |
| 1644 |
else
|
| 1645 |
gen_op_ldl_kernel(); |
| 1646 |
} |
| 1647 |
#endif
|
| 1648 |
} else {
|
| 1649 |
/* store */
|
| 1650 |
gen_movl_T0_reg(s, rd); |
| 1651 |
#if defined(CONFIG_USER_ONLY)
|
| 1652 |
if (insn & (1 << 22)) |
| 1653 |
gen_op_stb_raw(); |
| 1654 |
else
|
| 1655 |
gen_op_stl_raw(); |
| 1656 |
#else
|
| 1657 |
if (insn & (1 << 22)) { |
| 1658 |
if (i)
|
| 1659 |
gen_op_stb_user(); |
| 1660 |
else
|
| 1661 |
gen_op_stb_kernel(); |
| 1662 |
} else {
|
| 1663 |
if (i)
|
| 1664 |
gen_op_stl_user(); |
| 1665 |
else
|
| 1666 |
gen_op_stl_kernel(); |
| 1667 |
} |
| 1668 |
#endif
|
| 1669 |
} |
| 1670 |
if (!(insn & (1 << 24))) { |
| 1671 |
gen_add_data_offset(s, insn); |
| 1672 |
gen_movl_reg_T1(s, rn); |
| 1673 |
} else if (insn & (1 << 21)) |
| 1674 |
gen_movl_reg_T1(s, rn); {
|
| 1675 |
} |
| 1676 |
if (insn & (1 << 20)) { |
| 1677 |
/* Complete the load. */
|
| 1678 |
if (rd == 15) |
| 1679 |
gen_bx(s); |
| 1680 |
else
|
| 1681 |
gen_movl_reg_T0(s, rd); |
| 1682 |
} |
| 1683 |
break;
|
| 1684 |
case 0x08: |
| 1685 |
case 0x09: |
| 1686 |
{
|
| 1687 |
int j, n, user, loaded_base;
|
| 1688 |
/* load/store multiple words */
|
| 1689 |
/* XXX: store correct base if write back */
|
| 1690 |
user = 0;
|
| 1691 |
if (insn & (1 << 22)) { |
| 1692 |
if (IS_USER(s))
|
| 1693 |
goto illegal_op; /* only usable in supervisor mode */ |
| 1694 |
|
| 1695 |
if ((insn & (1 << 15)) == 0) |
| 1696 |
user = 1;
|
| 1697 |
} |
| 1698 |
rn = (insn >> 16) & 0xf; |
| 1699 |
gen_movl_T1_reg(s, rn); |
| 1700 |
|
| 1701 |
/* compute total size */
|
| 1702 |
loaded_base = 0;
|
| 1703 |
n = 0;
|
| 1704 |
for(i=0;i<16;i++) { |
| 1705 |
if (insn & (1 << i)) |
| 1706 |
n++; |
| 1707 |
} |
| 1708 |
/* XXX: test invalid n == 0 case ? */
|
| 1709 |
if (insn & (1 << 23)) { |
| 1710 |
if (insn & (1 << 24)) { |
| 1711 |
/* pre increment */
|
| 1712 |
gen_op_addl_T1_im(4);
|
| 1713 |
} else {
|
| 1714 |
/* post increment */
|
| 1715 |
} |
| 1716 |
} else {
|
| 1717 |
if (insn & (1 << 24)) { |
| 1718 |
/* pre decrement */
|
| 1719 |
gen_op_addl_T1_im(-(n * 4));
|
| 1720 |
} else {
|
| 1721 |
/* post decrement */
|
| 1722 |
if (n != 1) |
| 1723 |
gen_op_addl_T1_im(-((n - 1) * 4)); |
| 1724 |
} |
| 1725 |
} |
| 1726 |
j = 0;
|
| 1727 |
for(i=0;i<16;i++) { |
| 1728 |
if (insn & (1 << i)) { |
| 1729 |
if (insn & (1 << 20)) { |
| 1730 |
/* load */
|
| 1731 |
gen_ldst(ldl, s); |
| 1732 |
if (i == 15) { |
| 1733 |
gen_bx(s); |
| 1734 |
} else if (user) { |
| 1735 |
gen_op_movl_user_T0(i); |
| 1736 |
} else if (i == rn) { |
| 1737 |
gen_op_movl_T2_T0(); |
| 1738 |
loaded_base = 1;
|
| 1739 |
} else {
|
| 1740 |
gen_movl_reg_T0(s, i); |
| 1741 |
} |
| 1742 |
} else {
|
| 1743 |
/* store */
|
| 1744 |
if (i == 15) { |
| 1745 |
/* special case: r15 = PC + 12 */
|
| 1746 |
val = (long)s->pc + 8; |
| 1747 |
gen_op_movl_TN_im[0](val);
|
| 1748 |
} else if (user) { |
| 1749 |
gen_op_movl_T0_user(i); |
| 1750 |
} else {
|
| 1751 |
gen_movl_T0_reg(s, i); |
| 1752 |
} |
| 1753 |
gen_ldst(stl, s); |
| 1754 |
} |
| 1755 |
j++; |
| 1756 |
/* no need to add after the last transfer */
|
| 1757 |
if (j != n)
|
| 1758 |
gen_op_addl_T1_im(4);
|
| 1759 |
} |
| 1760 |
} |
| 1761 |
if (insn & (1 << 21)) { |
| 1762 |
/* write back */
|
| 1763 |
if (insn & (1 << 23)) { |
| 1764 |
if (insn & (1 << 24)) { |
| 1765 |
/* pre increment */
|
| 1766 |
} else {
|
| 1767 |
/* post increment */
|
| 1768 |
gen_op_addl_T1_im(4);
|
| 1769 |
} |
| 1770 |
} else {
|
| 1771 |
if (insn & (1 << 24)) { |
| 1772 |
/* pre decrement */
|
| 1773 |
if (n != 1) |
| 1774 |
gen_op_addl_T1_im(-((n - 1) * 4)); |
| 1775 |
} else {
|
| 1776 |
/* post decrement */
|
| 1777 |
gen_op_addl_T1_im(-(n * 4));
|
| 1778 |
} |
| 1779 |
} |
| 1780 |
gen_movl_reg_T1(s, rn); |
| 1781 |
} |
| 1782 |
if (loaded_base) {
|
| 1783 |
gen_op_movl_T0_T2(); |
| 1784 |
gen_movl_reg_T0(s, rn); |
| 1785 |
} |
| 1786 |
if ((insn & (1 << 22)) && !user) { |
| 1787 |
/* Restore CPSR from SPSR. */
|
| 1788 |
gen_op_movl_T0_spsr(); |
| 1789 |
gen_op_movl_cpsr_T0(0xffffffff);
|
| 1790 |
s->is_jmp = DISAS_UPDATE; |
| 1791 |
} |
| 1792 |
} |
| 1793 |
break;
|
| 1794 |
case 0xa: |
| 1795 |
case 0xb: |
| 1796 |
{
|
| 1797 |
int32_t offset; |
| 1798 |
|
| 1799 |
/* branch (and link) */
|
| 1800 |
val = (int32_t)s->pc; |
| 1801 |
if (insn & (1 << 24)) { |
| 1802 |
gen_op_movl_T0_im(val); |
| 1803 |
gen_op_movl_reg_TN[0][14](); |
| 1804 |
} |
| 1805 |
offset = (((int32_t)insn << 8) >> 8); |
| 1806 |
val += (offset << 2) + 4; |
| 1807 |
gen_jmp(s, val); |
| 1808 |
} |
| 1809 |
break;
|
| 1810 |
case 0xc: |
| 1811 |
case 0xd: |
| 1812 |
case 0xe: |
| 1813 |
/* Coprocessor. */
|
| 1814 |
op1 = (insn >> 8) & 0xf; |
| 1815 |
switch (op1) {
|
| 1816 |
case 10: |
| 1817 |
case 11: |
| 1818 |
if (disas_vfp_insn (env, s, insn))
|
| 1819 |
goto illegal_op;
|
| 1820 |
break;
|
| 1821 |
case 15: |
| 1822 |
if (disas_cp15_insn (s, insn))
|
| 1823 |
goto illegal_op;
|
| 1824 |
break;
|
| 1825 |
default:
|
| 1826 |
/* unknown coprocessor. */
|
| 1827 |
goto illegal_op;
|
| 1828 |
} |
| 1829 |
break;
|
| 1830 |
case 0xf: |
| 1831 |
/* swi */
|
| 1832 |
gen_op_movl_T0_im((long)s->pc);
|
| 1833 |
gen_op_movl_reg_TN[0][15](); |
| 1834 |
gen_op_swi(); |
| 1835 |
s->is_jmp = DISAS_JUMP; |
| 1836 |
break;
|
| 1837 |
default:
|
| 1838 |
illegal_op:
|
| 1839 |
gen_op_movl_T0_im((long)s->pc - 4); |
| 1840 |
gen_op_movl_reg_TN[0][15](); |
| 1841 |
gen_op_undef_insn(); |
| 1842 |
s->is_jmp = DISAS_JUMP; |
| 1843 |
break;
|
| 1844 |
} |
| 1845 |
} |
| 1846 |
} |
| 1847 |
|
| 1848 |
static void disas_thumb_insn(DisasContext *s) |
| 1849 |
{
|
| 1850 |
uint32_t val, insn, op, rm, rn, rd, shift, cond; |
| 1851 |
int32_t offset; |
| 1852 |
int i;
|
| 1853 |
|
| 1854 |
insn = lduw_code(s->pc); |
| 1855 |
s->pc += 2;
|
| 1856 |
|
| 1857 |
switch (insn >> 12) { |
| 1858 |
case 0: case 1: |
| 1859 |
rd = insn & 7;
|
| 1860 |
op = (insn >> 11) & 3; |
| 1861 |
if (op == 3) { |
| 1862 |
/* add/subtract */
|
| 1863 |
rn = (insn >> 3) & 7; |
| 1864 |
gen_movl_T0_reg(s, rn); |
| 1865 |
if (insn & (1 << 10)) { |
| 1866 |
/* immediate */
|
| 1867 |
gen_op_movl_T1_im((insn >> 6) & 7); |
| 1868 |
} else {
|
| 1869 |
/* reg */
|
| 1870 |
rm = (insn >> 6) & 7; |
| 1871 |
gen_movl_T1_reg(s, rm); |
| 1872 |
} |
| 1873 |
if (insn & (1 << 9)) |
| 1874 |
gen_op_subl_T0_T1_cc(); |
| 1875 |
else
|
| 1876 |
gen_op_addl_T0_T1_cc(); |
| 1877 |
gen_movl_reg_T0(s, rd); |
| 1878 |
} else {
|
| 1879 |
/* shift immediate */
|
| 1880 |
rm = (insn >> 3) & 7; |
| 1881 |
shift = (insn >> 6) & 0x1f; |
| 1882 |
gen_movl_T0_reg(s, rm); |
| 1883 |
gen_shift_T0_im_thumb[op](shift); |
| 1884 |
gen_movl_reg_T0(s, rd); |
| 1885 |
} |
| 1886 |
break;
|
| 1887 |
case 2: case 3: |
| 1888 |
/* arithmetic large immediate */
|
| 1889 |
op = (insn >> 11) & 3; |
| 1890 |
rd = (insn >> 8) & 0x7; |
| 1891 |
if (op == 0) { |
| 1892 |
gen_op_movl_T0_im(insn & 0xff);
|
| 1893 |
} else {
|
| 1894 |
gen_movl_T0_reg(s, rd); |
| 1895 |
gen_op_movl_T1_im(insn & 0xff);
|
| 1896 |
} |
| 1897 |
switch (op) {
|
| 1898 |
case 0: /* mov */ |
| 1899 |
gen_op_logic_T0_cc(); |
| 1900 |
break;
|
| 1901 |
case 1: /* cmp */ |
| 1902 |
gen_op_subl_T0_T1_cc(); |
| 1903 |
break;
|
| 1904 |
case 2: /* add */ |
| 1905 |
gen_op_addl_T0_T1_cc(); |
| 1906 |
break;
|
| 1907 |
case 3: /* sub */ |
| 1908 |
gen_op_subl_T0_T1_cc(); |
| 1909 |
break;
|
| 1910 |
} |
| 1911 |
if (op != 1) |
| 1912 |
gen_movl_reg_T0(s, rd); |
| 1913 |
break;
|
| 1914 |
case 4: |
| 1915 |
if (insn & (1 << 11)) { |
| 1916 |
rd = (insn >> 8) & 7; |
| 1917 |
/* load pc-relative. Bit 1 of PC is ignored. */
|
| 1918 |
val = s->pc + 2 + ((insn & 0xff) * 4); |
| 1919 |
val &= ~(uint32_t)2;
|
| 1920 |
gen_op_movl_T1_im(val); |
| 1921 |
gen_ldst(ldl, s); |
| 1922 |
gen_movl_reg_T0(s, rd); |
| 1923 |
break;
|
| 1924 |
} |
| 1925 |
if (insn & (1 << 10)) { |
| 1926 |
/* data processing extended or blx */
|
| 1927 |
rd = (insn & 7) | ((insn >> 4) & 8); |
| 1928 |
rm = (insn >> 3) & 0xf; |
| 1929 |
op = (insn >> 8) & 3; |
| 1930 |
switch (op) {
|
| 1931 |
case 0: /* add */ |
| 1932 |
gen_movl_T0_reg(s, rd); |
| 1933 |
gen_movl_T1_reg(s, rm); |
| 1934 |
gen_op_addl_T0_T1(); |
| 1935 |
gen_movl_reg_T0(s, rd); |
| 1936 |
break;
|
| 1937 |
case 1: /* cmp */ |
| 1938 |
gen_movl_T0_reg(s, rd); |
| 1939 |
gen_movl_T1_reg(s, rm); |
| 1940 |
gen_op_subl_T0_T1_cc(); |
| 1941 |
break;
|
| 1942 |
case 2: /* mov/cpy */ |
| 1943 |
gen_movl_T0_reg(s, rm); |
| 1944 |
gen_movl_reg_T0(s, rd); |
| 1945 |
break;
|
| 1946 |
case 3:/* branch [and link] exchange thumb register */ |
| 1947 |
if (insn & (1 << 7)) { |
| 1948 |
val = (uint32_t)s->pc | 1;
|
| 1949 |
gen_op_movl_T1_im(val); |
| 1950 |
gen_movl_reg_T1(s, 14);
|
| 1951 |
} |
| 1952 |
gen_movl_T0_reg(s, rm); |
| 1953 |
gen_bx(s); |
| 1954 |
break;
|
| 1955 |
} |
| 1956 |
break;
|
| 1957 |
} |
| 1958 |
|
| 1959 |
/* data processing register */
|
| 1960 |
rd = insn & 7;
|
| 1961 |
rm = (insn >> 3) & 7; |
| 1962 |
op = (insn >> 6) & 0xf; |
| 1963 |
if (op == 2 || op == 3 || op == 4 || op == 7) { |
| 1964 |
/* the shift/rotate ops want the operands backwards */
|
| 1965 |
val = rm; |
| 1966 |
rm = rd; |
| 1967 |
rd = val; |
| 1968 |
val = 1;
|
| 1969 |
} else {
|
| 1970 |
val = 0;
|
| 1971 |
} |
| 1972 |
|
| 1973 |
if (op == 9) /* neg */ |
| 1974 |
gen_op_movl_T0_im(0);
|
| 1975 |
else if (op != 0xf) /* mvn doesn't read its first operand */ |
| 1976 |
gen_movl_T0_reg(s, rd); |
| 1977 |
|
| 1978 |
gen_movl_T1_reg(s, rm); |
| 1979 |
switch (op) {
|
| 1980 |
case 0x0: /* and */ |
| 1981 |
gen_op_andl_T0_T1(); |
| 1982 |
gen_op_logic_T0_cc(); |
| 1983 |
break;
|
| 1984 |
case 0x1: /* eor */ |
| 1985 |
gen_op_xorl_T0_T1(); |
| 1986 |
gen_op_logic_T0_cc(); |
| 1987 |
break;
|
| 1988 |
case 0x2: /* lsl */ |
| 1989 |
gen_op_shll_T1_T0_cc(); |
| 1990 |
gen_op_logic_T1_cc(); |
| 1991 |
break;
|
| 1992 |
case 0x3: /* lsr */ |
| 1993 |
gen_op_shrl_T1_T0_cc(); |
| 1994 |
gen_op_logic_T1_cc(); |
| 1995 |
break;
|
| 1996 |
case 0x4: /* asr */ |
| 1997 |
gen_op_sarl_T1_T0_cc(); |
| 1998 |
gen_op_logic_T1_cc(); |
| 1999 |
break;
|
| 2000 |
case 0x5: /* adc */ |
| 2001 |
gen_op_adcl_T0_T1_cc(); |
| 2002 |
break;
|
| 2003 |
case 0x6: /* sbc */ |
| 2004 |
gen_op_sbcl_T0_T1_cc(); |
| 2005 |
break;
|
| 2006 |
case 0x7: /* ror */ |
| 2007 |
gen_op_rorl_T1_T0_cc(); |
| 2008 |
gen_op_logic_T1_cc(); |
| 2009 |
break;
|
| 2010 |
case 0x8: /* tst */ |
| 2011 |
gen_op_andl_T0_T1(); |
| 2012 |
gen_op_logic_T0_cc(); |
| 2013 |
rd = 16;
|
| 2014 |
break;
|
| 2015 |
case 0x9: /* neg */ |
| 2016 |
gen_op_subl_T0_T1_cc(); |
| 2017 |
break;
|
| 2018 |
case 0xa: /* cmp */ |
| 2019 |
gen_op_subl_T0_T1_cc(); |
| 2020 |
rd = 16;
|
| 2021 |
break;
|
| 2022 |
case 0xb: /* cmn */ |
| 2023 |
gen_op_addl_T0_T1_cc(); |
| 2024 |
rd = 16;
|
| 2025 |
break;
|
| 2026 |
case 0xc: /* orr */ |
| 2027 |
gen_op_orl_T0_T1(); |
| 2028 |
gen_op_logic_T0_cc(); |
| 2029 |
break;
|
| 2030 |
case 0xd: /* mul */ |
| 2031 |
gen_op_mull_T0_T1(); |
| 2032 |
gen_op_logic_T0_cc(); |
| 2033 |
break;
|
| 2034 |
case 0xe: /* bic */ |
| 2035 |
gen_op_bicl_T0_T1(); |
| 2036 |
gen_op_logic_T0_cc(); |
| 2037 |
break;
|
| 2038 |
case 0xf: /* mvn */ |
| 2039 |
gen_op_notl_T1(); |
| 2040 |
gen_op_logic_T1_cc(); |
| 2041 |
val = 1;
|
| 2042 |
rm = rd; |
| 2043 |
break;
|
| 2044 |
} |
| 2045 |
if (rd != 16) { |
| 2046 |
if (val)
|
| 2047 |
gen_movl_reg_T1(s, rm); |
| 2048 |
else
|
| 2049 |
gen_movl_reg_T0(s, rd); |
| 2050 |
} |
| 2051 |
break;
|
| 2052 |
|
| 2053 |
case 5: |
| 2054 |
/* load/store register offset. */
|
| 2055 |
rd = insn & 7;
|
| 2056 |
rn = (insn >> 3) & 7; |
| 2057 |
rm = (insn >> 6) & 7; |
| 2058 |
op = (insn >> 9) & 7; |
| 2059 |
gen_movl_T1_reg(s, rn); |
| 2060 |
gen_movl_T2_reg(s, rm); |
| 2061 |
gen_op_addl_T1_T2(); |
| 2062 |
|
| 2063 |
if (op < 3) /* store */ |
| 2064 |
gen_movl_T0_reg(s, rd); |
| 2065 |
|
| 2066 |
switch (op) {
|
| 2067 |
case 0: /* str */ |
| 2068 |
gen_ldst(stl, s); |
| 2069 |
break;
|
| 2070 |
case 1: /* strh */ |
| 2071 |
gen_ldst(stw, s); |
| 2072 |
break;
|
| 2073 |
case 2: /* strb */ |
| 2074 |
gen_ldst(stb, s); |
| 2075 |
break;
|
| 2076 |
case 3: /* ldrsb */ |
| 2077 |
gen_ldst(ldsb, s); |
| 2078 |
break;
|
| 2079 |
case 4: /* ldr */ |
| 2080 |
gen_ldst(ldl, s); |
| 2081 |
break;
|
| 2082 |
case 5: /* ldrh */ |
| 2083 |
gen_ldst(lduw, s); |
| 2084 |
break;
|
| 2085 |
case 6: /* ldrb */ |
| 2086 |
gen_ldst(ldub, s); |
| 2087 |
break;
|
| 2088 |
case 7: /* ldrsh */ |
| 2089 |
gen_ldst(ldsw, s); |
| 2090 |
break;
|
| 2091 |
} |
| 2092 |
if (op >= 3) /* load */ |
| 2093 |
gen_movl_reg_T0(s, rd); |
| 2094 |
break;
|
| 2095 |
|
| 2096 |
case 6: |
| 2097 |
/* load/store word immediate offset */
|
| 2098 |
rd = insn & 7;
|
| 2099 |
rn = (insn >> 3) & 7; |
| 2100 |
gen_movl_T1_reg(s, rn); |
| 2101 |
val = (insn >> 4) & 0x7c; |
| 2102 |
gen_op_movl_T2_im(val); |
| 2103 |
gen_op_addl_T1_T2(); |
| 2104 |
|
| 2105 |
if (insn & (1 << 11)) { |
| 2106 |
/* load */
|
| 2107 |
gen_ldst(ldl, s); |
| 2108 |
gen_movl_reg_T0(s, rd); |
| 2109 |
} else {
|
| 2110 |
/* store */
|
| 2111 |
gen_movl_T0_reg(s, rd); |
| 2112 |
gen_ldst(stl, s); |
| 2113 |
} |
| 2114 |
break;
|
| 2115 |
|
| 2116 |
case 7: |
| 2117 |
/* load/store byte immediate offset */
|
| 2118 |
rd = insn & 7;
|
| 2119 |
rn = (insn >> 3) & 7; |
| 2120 |
gen_movl_T1_reg(s, rn); |
| 2121 |
val = (insn >> 6) & 0x1f; |
| 2122 |
gen_op_movl_T2_im(val); |
| 2123 |
gen_op_addl_T1_T2(); |
| 2124 |
|
| 2125 |
if (insn & (1 << 11)) { |
| 2126 |
/* load */
|
| 2127 |
gen_ldst(ldub, s); |
| 2128 |
gen_movl_reg_T0(s, rd); |
| 2129 |
} else {
|
| 2130 |
/* store */
|
| 2131 |
gen_movl_T0_reg(s, rd); |
| 2132 |
gen_ldst(stb, s); |
| 2133 |
} |
| 2134 |
break;
|
| 2135 |
|
| 2136 |
case 8: |
| 2137 |
/* load/store halfword immediate offset */
|
| 2138 |
rd = insn & 7;
|
| 2139 |
rn = (insn >> 3) & 7; |
| 2140 |
gen_movl_T1_reg(s, rn); |
| 2141 |
val = (insn >> 5) & 0x3e; |
| 2142 |
gen_op_movl_T2_im(val); |
| 2143 |
gen_op_addl_T1_T2(); |
| 2144 |
|
| 2145 |
if (insn & (1 << 11)) { |
| 2146 |
/* load */
|
| 2147 |
gen_ldst(lduw, s); |
| 2148 |
gen_movl_reg_T0(s, rd); |
| 2149 |
} else {
|
| 2150 |
/* store */
|
| 2151 |
gen_movl_T0_reg(s, rd); |
| 2152 |
gen_ldst(stw, s); |
| 2153 |
} |
| 2154 |
break;
|
| 2155 |
|
| 2156 |
case 9: |
| 2157 |
/* load/store from stack */
|
| 2158 |
rd = (insn >> 8) & 7; |
| 2159 |
gen_movl_T1_reg(s, 13);
|
| 2160 |
val = (insn & 0xff) * 4; |
| 2161 |
gen_op_movl_T2_im(val); |
| 2162 |
gen_op_addl_T1_T2(); |
| 2163 |
|
| 2164 |
if (insn & (1 << 11)) { |
| 2165 |
/* load */
|
| 2166 |
gen_ldst(ldl, s); |
| 2167 |
gen_movl_reg_T0(s, rd); |
| 2168 |
} else {
|
| 2169 |
/* store */
|
| 2170 |
gen_movl_T0_reg(s, rd); |
| 2171 |
gen_ldst(stl, s); |
| 2172 |
} |
| 2173 |
break;
|
| 2174 |
|
| 2175 |
case 10: |
| 2176 |
/* add to high reg */
|
| 2177 |
rd = (insn >> 8) & 7; |
| 2178 |
if (insn & (1 << 11)) { |
| 2179 |
/* SP */
|
| 2180 |
gen_movl_T0_reg(s, 13);
|
| 2181 |
} else {
|
| 2182 |
/* PC. bit 1 is ignored. */
|
| 2183 |
gen_op_movl_T0_im((s->pc + 2) & ~(uint32_t)2); |
| 2184 |
} |
| 2185 |
val = (insn & 0xff) * 4; |
| 2186 |
gen_op_movl_T1_im(val); |
| 2187 |
gen_op_addl_T0_T1(); |
| 2188 |
gen_movl_reg_T0(s, rd); |
| 2189 |
break;
|
| 2190 |
|
| 2191 |
case 11: |
| 2192 |
/* misc */
|
| 2193 |
op = (insn >> 8) & 0xf; |
| 2194 |
switch (op) {
|
| 2195 |
case 0: |
| 2196 |
/* adjust stack pointer */
|
| 2197 |
gen_movl_T1_reg(s, 13);
|
| 2198 |
val = (insn & 0x7f) * 4; |
| 2199 |
if (insn & (1 << 7)) |
| 2200 |
val = -(int32_t)val; |
| 2201 |
gen_op_movl_T2_im(val); |
| 2202 |
gen_op_addl_T1_T2(); |
| 2203 |
gen_movl_reg_T1(s, 13);
|
| 2204 |
break;
|
| 2205 |
|
| 2206 |
case 4: case 5: case 0xc: case 0xd: |
| 2207 |
/* push/pop */
|
| 2208 |
gen_movl_T1_reg(s, 13);
|
| 2209 |
if (insn & (1 << 8)) |
| 2210 |
offset = 4;
|
| 2211 |
else
|
| 2212 |
offset = 0;
|
| 2213 |
for (i = 0; i < 8; i++) { |
| 2214 |
if (insn & (1 << i)) |
| 2215 |
offset += 4;
|
| 2216 |
} |
| 2217 |
if ((insn & (1 << 11)) == 0) { |
| 2218 |
gen_op_movl_T2_im(-offset); |
| 2219 |
gen_op_addl_T1_T2(); |
| 2220 |
} |
| 2221 |
gen_op_movl_T2_im(4);
|
| 2222 |
for (i = 0; i < 8; i++) { |
| 2223 |
if (insn & (1 << i)) { |
| 2224 |
if (insn & (1 << 11)) { |
| 2225 |
/* pop */
|
| 2226 |
gen_ldst(ldl, s); |
| 2227 |
gen_movl_reg_T0(s, i); |
| 2228 |
} else {
|
| 2229 |
/* push */
|
| 2230 |
gen_movl_T0_reg(s, i); |
| 2231 |
gen_ldst(stl, s); |
| 2232 |
} |
| 2233 |
/* advance to the next address. */
|
| 2234 |
gen_op_addl_T1_T2(); |
| 2235 |
} |
| 2236 |
} |
| 2237 |
if (insn & (1 << 8)) { |
| 2238 |
if (insn & (1 << 11)) { |
| 2239 |
/* pop pc */
|
| 2240 |
gen_ldst(ldl, s); |
| 2241 |
/* don't set the pc until the rest of the instruction
|
| 2242 |
has completed */
|
| 2243 |
} else {
|
| 2244 |
/* push lr */
|
| 2245 |
gen_movl_T0_reg(s, 14);
|
| 2246 |
gen_ldst(stl, s); |
| 2247 |
} |
| 2248 |
gen_op_addl_T1_T2(); |
| 2249 |
} |
| 2250 |
if ((insn & (1 << 11)) == 0) { |
| 2251 |
gen_op_movl_T2_im(-offset); |
| 2252 |
gen_op_addl_T1_T2(); |
| 2253 |
} |
| 2254 |
/* write back the new stack pointer */
|
| 2255 |
gen_movl_reg_T1(s, 13);
|
| 2256 |
/* set the new PC value */
|
| 2257 |
if ((insn & 0x0900) == 0x0900) |
| 2258 |
gen_bx(s); |
| 2259 |
break;
|
| 2260 |
|
| 2261 |
case 0xe: /* bkpt */ |
| 2262 |
gen_op_movl_T0_im((long)s->pc - 2); |
| 2263 |
gen_op_movl_reg_TN[0][15](); |
| 2264 |
gen_op_bkpt(); |
| 2265 |
s->is_jmp = DISAS_JUMP; |
| 2266 |
break;
|
| 2267 |
|
| 2268 |
default:
|
| 2269 |
goto undef;
|
| 2270 |
} |
| 2271 |
break;
|
| 2272 |
|
| 2273 |
case 12: |
| 2274 |
/* load/store multiple */
|
| 2275 |
rn = (insn >> 8) & 0x7; |
| 2276 |
gen_movl_T1_reg(s, rn); |
| 2277 |
gen_op_movl_T2_im(4);
|
| 2278 |
for (i = 0; i < 8; i++) { |
| 2279 |
if (insn & (1 << i)) { |
| 2280 |
if (insn & (1 << 11)) { |
| 2281 |
/* load */
|
| 2282 |
gen_ldst(ldl, s); |
| 2283 |
gen_movl_reg_T0(s, i); |
| 2284 |
} else {
|
| 2285 |
/* store */
|
| 2286 |
gen_movl_T0_reg(s, i); |
| 2287 |
gen_ldst(stl, s); |
| 2288 |
} |
| 2289 |
/* advance to the next address */
|
| 2290 |
gen_op_addl_T1_T2(); |
| 2291 |
} |
| 2292 |
} |
| 2293 |
/* Base register writeback. */
|
| 2294 |
if ((insn & (1 << rn)) == 0) |
| 2295 |
gen_movl_reg_T1(s, rn); |
| 2296 |
break;
|
| 2297 |
|
| 2298 |
case 13: |
| 2299 |
/* conditional branch or swi */
|
| 2300 |
cond = (insn >> 8) & 0xf; |
| 2301 |
if (cond == 0xe) |
| 2302 |
goto undef;
|
| 2303 |
|
| 2304 |
if (cond == 0xf) { |
| 2305 |
/* swi */
|
| 2306 |
gen_op_movl_T0_im((long)s->pc | 1); |
| 2307 |
/* Don't set r15. */
|
| 2308 |
gen_op_movl_reg_TN[0][15](); |
| 2309 |
gen_op_swi(); |
| 2310 |
s->is_jmp = DISAS_JUMP; |
| 2311 |
break;
|
| 2312 |
} |
| 2313 |
/* generate a conditional jump to next instruction */
|
| 2314 |
s->condlabel = gen_new_label(); |
| 2315 |
gen_test_cc[cond ^ 1](s->condlabel);
|
| 2316 |
s->condjmp = 1;
|
| 2317 |
//gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc);
|
| 2318 |
//s->is_jmp = DISAS_JUMP_NEXT;
|
| 2319 |
gen_movl_T1_reg(s, 15);
|
| 2320 |
|
| 2321 |
/* jump to the offset */
|
| 2322 |
val = (uint32_t)s->pc + 2;
|
| 2323 |
offset = ((int32_t)insn << 24) >> 24; |
| 2324 |
val += offset << 1;
|
| 2325 |
gen_jmp(s, val); |
| 2326 |
break;
|
| 2327 |
|
| 2328 |
case 14: |
| 2329 |
/* unconditional branch */
|
| 2330 |
if (insn & (1 << 11)) { |
| 2331 |
/* Second half of blx. */
|
| 2332 |
offset = ((insn & 0x7ff) << 1); |
| 2333 |
gen_movl_T0_reg(s, 14);
|
| 2334 |
gen_op_movl_T1_im(offset); |
| 2335 |
gen_op_addl_T0_T1(); |
| 2336 |
gen_op_movl_T1_im(0xfffffffc);
|
| 2337 |
gen_op_andl_T0_T1(); |
| 2338 |
|
| 2339 |
val = (uint32_t)s->pc; |
| 2340 |
gen_op_movl_T1_im(val | 1);
|
| 2341 |
gen_movl_reg_T1(s, 14);
|
| 2342 |
gen_bx(s); |
| 2343 |
break;
|
| 2344 |
} |
| 2345 |
val = (uint32_t)s->pc; |
| 2346 |
offset = ((int32_t)insn << 21) >> 21; |
| 2347 |
val += (offset << 1) + 2; |
| 2348 |
gen_jmp(s, val); |
| 2349 |
break;
|
| 2350 |
|
| 2351 |
case 15: |
| 2352 |
/* branch and link [and switch to arm] */
|
| 2353 |
if ((s->pc & ~TARGET_PAGE_MASK) == 0) { |
| 2354 |
/* Instruction spans a page boundary. Implement it as two
|
| 2355 |
16-bit instructions in case the second half causes an
|
| 2356 |
prefetch abort. */
|
| 2357 |
offset = ((int32_t)insn << 21) >> 9; |
| 2358 |
val = s->pc + 2 + offset;
|
| 2359 |
gen_op_movl_T0_im(val); |
| 2360 |
gen_movl_reg_T0(s, 14);
|
| 2361 |
break;
|
| 2362 |
} |
| 2363 |
if (insn & (1 << 11)) { |
| 2364 |
/* Second half of bl. */
|
| 2365 |
offset = ((insn & 0x7ff) << 1) | 1; |
| 2366 |
gen_movl_T0_reg(s, 14);
|
| 2367 |
gen_op_movl_T1_im(offset); |
| 2368 |
gen_op_addl_T0_T1(); |
| 2369 |
|
| 2370 |
val = (uint32_t)s->pc; |
| 2371 |
gen_op_movl_T1_im(val | 1);
|
| 2372 |
gen_movl_reg_T1(s, 14);
|
| 2373 |
gen_bx(s); |
| 2374 |
break;
|
| 2375 |
} |
| 2376 |
offset = ((int32_t)insn << 21) >> 10; |
| 2377 |
insn = lduw_code(s->pc); |
| 2378 |
offset |= insn & 0x7ff;
|
| 2379 |
|
| 2380 |
val = (uint32_t)s->pc + 2;
|
| 2381 |
gen_op_movl_T1_im(val | 1);
|
| 2382 |
gen_movl_reg_T1(s, 14);
|
| 2383 |
|
| 2384 |
val += offset << 1;
|
| 2385 |
if (insn & (1 << 12)) { |
| 2386 |
/* bl */
|
| 2387 |
gen_jmp(s, val); |
| 2388 |
} else {
|
| 2389 |
/* blx */
|
| 2390 |
val &= ~(uint32_t)2;
|
| 2391 |
gen_op_movl_T0_im(val); |
| 2392 |
gen_bx(s); |
| 2393 |
} |
| 2394 |
} |
| 2395 |
return;
|
| 2396 |
undef:
|
| 2397 |
gen_op_movl_T0_im((long)s->pc - 2); |
| 2398 |
gen_op_movl_reg_TN[0][15](); |
| 2399 |
gen_op_undef_insn(); |
| 2400 |
s->is_jmp = DISAS_JUMP; |
| 2401 |
} |
| 2402 |
|
| 2403 |
/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
|
| 2404 |
basic block 'tb'. If search_pc is TRUE, also generate PC
|
| 2405 |
information for each intermediate instruction. */
|
| 2406 |
static inline int gen_intermediate_code_internal(CPUState *env, |
| 2407 |
TranslationBlock *tb, |
| 2408 |
int search_pc)
|
| 2409 |
{
|
| 2410 |
DisasContext dc1, *dc = &dc1; |
| 2411 |
uint16_t *gen_opc_end; |
| 2412 |
int j, lj;
|
| 2413 |
target_ulong pc_start; |
| 2414 |
uint32_t next_page_start; |
| 2415 |
|
| 2416 |
/* generate intermediate code */
|
| 2417 |
pc_start = tb->pc; |
| 2418 |
|
| 2419 |
dc->tb = tb; |
| 2420 |
|
| 2421 |
gen_opc_ptr = gen_opc_buf; |
| 2422 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
| 2423 |
gen_opparam_ptr = gen_opparam_buf; |
| 2424 |
|
| 2425 |
dc->is_jmp = DISAS_NEXT; |
| 2426 |
dc->pc = pc_start; |
| 2427 |
dc->singlestep_enabled = env->singlestep_enabled; |
| 2428 |
dc->condjmp = 0;
|
| 2429 |
dc->thumb = env->thumb; |
| 2430 |
dc->is_mem = 0;
|
| 2431 |
#if !defined(CONFIG_USER_ONLY)
|
| 2432 |
dc->user = (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_USR;
|
| 2433 |
#endif
|
| 2434 |
next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; |
| 2435 |
nb_gen_labels = 0;
|
| 2436 |
lj = -1;
|
| 2437 |
do {
|
| 2438 |
if (env->nb_breakpoints > 0) { |
| 2439 |
for(j = 0; j < env->nb_breakpoints; j++) { |
| 2440 |
if (env->breakpoints[j] == dc->pc) {
|
| 2441 |
gen_op_movl_T0_im((long)dc->pc);
|
| 2442 |
gen_op_movl_reg_TN[0][15](); |
| 2443 |
gen_op_debug(); |
| 2444 |
dc->is_jmp = DISAS_JUMP; |
| 2445 |
break;
|
| 2446 |
} |
| 2447 |
} |
| 2448 |
} |
| 2449 |
if (search_pc) {
|
| 2450 |
j = gen_opc_ptr - gen_opc_buf; |
| 2451 |
if (lj < j) {
|
| 2452 |
lj++; |
| 2453 |
while (lj < j)
|
| 2454 |
gen_opc_instr_start[lj++] = 0;
|
| 2455 |
} |
| 2456 |
gen_opc_pc[lj] = dc->pc; |
| 2457 |
gen_opc_instr_start[lj] = 1;
|
| 2458 |
} |
| 2459 |
|
| 2460 |
if (env->thumb)
|
| 2461 |
disas_thumb_insn(dc); |
| 2462 |
else
|
| 2463 |
disas_arm_insn(env, dc); |
| 2464 |
|
| 2465 |
if (dc->condjmp && !dc->is_jmp) {
|
| 2466 |
gen_set_label(dc->condlabel); |
| 2467 |
dc->condjmp = 0;
|
| 2468 |
} |
| 2469 |
/* Terminate the TB on memory ops if watchpoints are present. */
|
| 2470 |
/* FIXME: This should be replacd by the deterministic execution
|
| 2471 |
* IRQ raising bits. */
|
| 2472 |
if (dc->is_mem && env->nb_watchpoints)
|
| 2473 |
break;
|
| 2474 |
|
| 2475 |
/* Translation stops when a conditional branch is enoutered.
|
| 2476 |
* Otherwise the subsequent code could get translated several times.
|
| 2477 |
* Also stop translation when a page boundary is reached. This
|
| 2478 |
* ensures prefech aborts occur at the right place. */
|
| 2479 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
|
| 2480 |
!env->singlestep_enabled && |
| 2481 |
dc->pc < next_page_start); |
| 2482 |
/* At this stage dc->condjmp will only be set when the skipped
|
| 2483 |
* instruction was a conditional branch, and the PC has already been
|
| 2484 |
* written. */
|
| 2485 |
if (__builtin_expect(env->singlestep_enabled, 0)) { |
| 2486 |
/* Make sure the pc is updated, and raise a debug exception. */
|
| 2487 |
if (dc->condjmp) {
|
| 2488 |
gen_op_debug(); |
| 2489 |
gen_set_label(dc->condlabel); |
| 2490 |
} |
| 2491 |
if (dc->condjmp || !dc->is_jmp) {
|
| 2492 |
gen_op_movl_T0_im((long)dc->pc);
|
| 2493 |
gen_op_movl_reg_TN[0][15](); |
| 2494 |
dc->condjmp = 0;
|
| 2495 |
} |
| 2496 |
gen_op_debug(); |
| 2497 |
} else {
|
| 2498 |
switch(dc->is_jmp) {
|
| 2499 |
case DISAS_NEXT:
|
| 2500 |
gen_goto_tb(dc, 1, dc->pc);
|
| 2501 |
break;
|
| 2502 |
default:
|
| 2503 |
case DISAS_JUMP:
|
| 2504 |
case DISAS_UPDATE:
|
| 2505 |
/* indicate that the hash table must be used to find the next TB */
|
| 2506 |
gen_op_movl_T0_0(); |
| 2507 |
gen_op_exit_tb(); |
| 2508 |
break;
|
| 2509 |
case DISAS_TB_JUMP:
|
| 2510 |
/* nothing more to generate */
|
| 2511 |
break;
|
| 2512 |
} |
| 2513 |
if (dc->condjmp) {
|
| 2514 |
gen_set_label(dc->condlabel); |
| 2515 |
gen_goto_tb(dc, 1, dc->pc);
|
| 2516 |
dc->condjmp = 0;
|
| 2517 |
} |
| 2518 |
} |
| 2519 |
*gen_opc_ptr = INDEX_op_end; |
| 2520 |
|
| 2521 |
#ifdef DEBUG_DISAS
|
| 2522 |
if (loglevel & CPU_LOG_TB_IN_ASM) {
|
| 2523 |
fprintf(logfile, "----------------\n");
|
| 2524 |
fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
|
| 2525 |
target_disas(logfile, pc_start, dc->pc - pc_start, env->thumb); |
| 2526 |
fprintf(logfile, "\n");
|
| 2527 |
if (loglevel & (CPU_LOG_TB_OP)) {
|
| 2528 |
fprintf(logfile, "OP:\n");
|
| 2529 |
dump_ops(gen_opc_buf, gen_opparam_buf); |
| 2530 |
fprintf(logfile, "\n");
|
| 2531 |
} |
| 2532 |
} |
| 2533 |
#endif
|
| 2534 |
if (search_pc) {
|
| 2535 |
j = gen_opc_ptr - gen_opc_buf; |
| 2536 |
lj++; |
| 2537 |
while (lj <= j)
|
| 2538 |
gen_opc_instr_start[lj++] = 0;
|
| 2539 |
tb->size = 0;
|
| 2540 |
} else {
|
| 2541 |
tb->size = dc->pc - pc_start; |
| 2542 |
} |
| 2543 |
return 0; |
| 2544 |
} |
| 2545 |
|
| 2546 |
int gen_intermediate_code(CPUState *env, TranslationBlock *tb)
|
| 2547 |
{
|
| 2548 |
return gen_intermediate_code_internal(env, tb, 0); |
| 2549 |
} |
| 2550 |
|
| 2551 |
int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
|
| 2552 |
{
|
| 2553 |
return gen_intermediate_code_internal(env, tb, 1); |
| 2554 |
} |
| 2555 |
|
| 2556 |
static const char *cpu_mode_names[16] = { |
| 2557 |
"usr", "fiq", "irq", "svc", "???", "???", "???", "abt", |
| 2558 |
"???", "???", "???", "und", "???", "???", "???", "sys" |
| 2559 |
}; |
| 2560 |
void cpu_dump_state(CPUState *env, FILE *f,
|
| 2561 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
| 2562 |
int flags)
|
| 2563 |
{
|
| 2564 |
int i;
|
| 2565 |
union {
|
| 2566 |
uint32_t i; |
| 2567 |
float s;
|
| 2568 |
} s0, s1; |
| 2569 |
CPU_DoubleU d; |
| 2570 |
/* ??? This assumes float64 and double have the same layout.
|
| 2571 |
Oh well, it's only debug dumps. */
|
| 2572 |
union {
|
| 2573 |
float64 f64; |
| 2574 |
double d;
|
| 2575 |
} d0; |
| 2576 |
uint32_t psr; |
| 2577 |
|
| 2578 |
for(i=0;i<16;i++) { |
| 2579 |
cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]);
|
| 2580 |
if ((i % 4) == 3) |
| 2581 |
cpu_fprintf(f, "\n");
|
| 2582 |
else
|
| 2583 |
cpu_fprintf(f, " ");
|
| 2584 |
} |
| 2585 |
psr = cpsr_read(env); |
| 2586 |
cpu_fprintf(f, "PSR=%08x %c%c%c%c %c %s%d\n",
|
| 2587 |
psr, |
| 2588 |
psr & (1 << 31) ? 'N' : '-', |
| 2589 |
psr & (1 << 30) ? 'Z' : '-', |
| 2590 |
psr & (1 << 29) ? 'C' : '-', |
| 2591 |
psr & (1 << 28) ? 'V' : '-', |
| 2592 |
psr & CPSR_T ? 'T' : 'A', |
| 2593 |
cpu_mode_names[psr & 0xf], (psr & 0x10) ? 32 : 26); |
| 2594 |
|
| 2595 |
for (i = 0; i < 16; i++) { |
| 2596 |
d.d = env->vfp.regs[i]; |
| 2597 |
s0.i = d.l.lower; |
| 2598 |
s1.i = d.l.upper; |
| 2599 |
d0.f64 = d.d; |
| 2600 |
cpu_fprintf(f, "s%02d=%08x(%8g) s%02d=%08x(%8g) d%02d=%08x%08x(%8g)\n",
|
| 2601 |
i * 2, (int)s0.i, s0.s, |
| 2602 |
i * 2 + 1, (int)s1.i, s1.s, |
| 2603 |
i, (int)(uint32_t)d.l.upper, (int)(uint32_t)d.l.lower, |
| 2604 |
d0.d); |
| 2605 |
} |
| 2606 |
cpu_fprintf(f, "FPSCR: %08x\n", (int)env->vfp.xregs[ARM_VFP_FPSCR]); |
| 2607 |
} |
| 2608 |
|