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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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#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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#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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#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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#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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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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#include "gen-op.h" |
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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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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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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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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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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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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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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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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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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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}; |
281 |
|
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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(); |
286 |
} |
287 |
|
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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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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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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; |
308 |
else
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val = (long)s->pc + 4; |
310 |
gen_op_movl_TN_im[t](val); |
311 |
} else {
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gen_op_movl_TN_reg[t][reg](); |
313 |
} |
314 |
} |
315 |
|
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static inline void gen_movl_T0_reg(DisasContext *s, int reg) |
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{ |
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gen_movl_TN_reg(s, reg, 0);
|
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} |
320 |
|
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static inline void gen_movl_T1_reg(DisasContext *s, int reg) |
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{ |
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gen_movl_TN_reg(s, reg, 1);
|
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} |
325 |
|
326 |
static inline void gen_movl_T2_reg(DisasContext *s, int reg) |
327 |
{ |
328 |
gen_movl_TN_reg(s, reg, 2);
|
329 |
} |
330 |
|
331 |
static inline void gen_movl_reg_TN(DisasContext *s, int reg, int t) |
332 |
{ |
333 |
gen_op_movl_reg_TN[t][reg](); |
334 |
if (reg == 15) { |
335 |
s->is_jmp = DISAS_JUMP; |
336 |
} |
337 |
} |
338 |
|
339 |
static inline void gen_movl_reg_T0(DisasContext *s, int reg) |
340 |
{ |
341 |
gen_movl_reg_TN(s, reg, 0);
|
342 |
} |
343 |
|
344 |
static inline void gen_movl_reg_T1(DisasContext *s, int reg) |
345 |
{ |
346 |
gen_movl_reg_TN(s, reg, 1);
|
347 |
} |
348 |
|
349 |
/* Force a TB lookup after an instruction that changes the CPU state. */
|
350 |
static inline void gen_lookup_tb(DisasContext *s) |
351 |
{ |
352 |
gen_op_movl_T0_im(s->pc); |
353 |
gen_movl_reg_T0(s, 15);
|
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s->is_jmp = DISAS_UPDATE; |
355 |
} |
356 |
|
357 |
static inline void gen_add_data_offset(DisasContext *s, unsigned int insn) |
358 |
{ |
359 |
int val, rm, shift, shiftop;
|
360 |
|
361 |
if (!(insn & (1 << 25))) { |
362 |
/* immediate */
|
363 |
val = insn & 0xfff;
|
364 |
if (!(insn & (1 << 23))) |
365 |
val = -val; |
366 |
if (val != 0) |
367 |
gen_op_addl_T1_im(val); |
368 |
} else {
|
369 |
/* shift/register */
|
370 |
rm = (insn) & 0xf;
|
371 |
shift = (insn >> 7) & 0x1f; |
372 |
gen_movl_T2_reg(s, rm); |
373 |
shiftop = (insn >> 5) & 3; |
374 |
if (shift != 0) { |
375 |
gen_shift_T2_im[shiftop](shift); |
376 |
} else if (shiftop != 0) { |
377 |
gen_shift_T2_0[shiftop](); |
378 |
} |
379 |
if (!(insn & (1 << 23))) |
380 |
gen_op_subl_T1_T2(); |
381 |
else
|
382 |
gen_op_addl_T1_T2(); |
383 |
} |
384 |
} |
385 |
|
386 |
static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn, |
387 |
int extra)
|
388 |
{ |
389 |
int val, rm;
|
390 |
|
391 |
if (insn & (1 << 22)) { |
392 |
/* immediate */
|
393 |
val = (insn & 0xf) | ((insn >> 4) & 0xf0); |
394 |
val += extra; |
395 |
if (!(insn & (1 << 23))) |
396 |
val = -val; |
397 |
if (val != 0) |
398 |
gen_op_addl_T1_im(val); |
399 |
} else {
|
400 |
/* register */
|
401 |
if (extra)
|
402 |
gen_op_addl_T1_im(extra); |
403 |
rm = (insn) & 0xf;
|
404 |
gen_movl_T2_reg(s, rm); |
405 |
if (!(insn & (1 << 23))) |
406 |
gen_op_subl_T1_T2(); |
407 |
else
|
408 |
gen_op_addl_T1_T2(); |
409 |
} |
410 |
} |
411 |
|
412 |
#define VFP_OP(name) \
|
413 |
static inline void gen_vfp_##name(int dp) \ |
414 |
{ \ |
415 |
if (dp) \
|
416 |
gen_op_vfp_##name##d(); \ |
417 |
else \
|
418 |
gen_op_vfp_##name##s(); \ |
419 |
} |
420 |
|
421 |
VFP_OP(add) |
422 |
VFP_OP(sub) |
423 |
VFP_OP(mul) |
424 |
VFP_OP(div) |
425 |
VFP_OP(neg) |
426 |
VFP_OP(abs) |
427 |
VFP_OP(sqrt) |
428 |
VFP_OP(cmp) |
429 |
VFP_OP(cmpe) |
430 |
VFP_OP(F1_ld0) |
431 |
VFP_OP(uito) |
432 |
VFP_OP(sito) |
433 |
VFP_OP(toui) |
434 |
VFP_OP(touiz) |
435 |
VFP_OP(tosi) |
436 |
VFP_OP(tosiz) |
437 |
|
438 |
#undef VFP_OP
|
439 |
|
440 |
static inline void gen_vfp_ld(DisasContext *s, int dp) |
441 |
{ |
442 |
if (dp)
|
443 |
gen_ldst(vfp_ldd, s); |
444 |
else
|
445 |
gen_ldst(vfp_lds, s); |
446 |
} |
447 |
|
448 |
static inline void gen_vfp_st(DisasContext *s, int dp) |
449 |
{ |
450 |
if (dp)
|
451 |
gen_ldst(vfp_std, s); |
452 |
else
|
453 |
gen_ldst(vfp_sts, s); |
454 |
} |
455 |
|
456 |
static inline long |
457 |
vfp_reg_offset (int dp, int reg) |
458 |
{ |
459 |
if (dp)
|
460 |
return offsetof(CPUARMState, vfp.regs[reg]);
|
461 |
else if (reg & 1) { |
462 |
return offsetof(CPUARMState, vfp.regs[reg >> 1]) |
463 |
+ offsetof(CPU_DoubleU, l.upper); |
464 |
} else {
|
465 |
return offsetof(CPUARMState, vfp.regs[reg >> 1]) |
466 |
+ offsetof(CPU_DoubleU, l.lower); |
467 |
} |
468 |
} |
469 |
static inline void gen_mov_F0_vreg(int dp, int reg) |
470 |
{ |
471 |
if (dp)
|
472 |
gen_op_vfp_getreg_F0d(vfp_reg_offset(dp, reg)); |
473 |
else
|
474 |
gen_op_vfp_getreg_F0s(vfp_reg_offset(dp, reg)); |
475 |
} |
476 |
|
477 |
static inline void gen_mov_F1_vreg(int dp, int reg) |
478 |
{ |
479 |
if (dp)
|
480 |
gen_op_vfp_getreg_F1d(vfp_reg_offset(dp, reg)); |
481 |
else
|
482 |
gen_op_vfp_getreg_F1s(vfp_reg_offset(dp, reg)); |
483 |
} |
484 |
|
485 |
static inline void gen_mov_vreg_F0(int dp, int reg) |
486 |
{ |
487 |
if (dp)
|
488 |
gen_op_vfp_setreg_F0d(vfp_reg_offset(dp, reg)); |
489 |
else
|
490 |
gen_op_vfp_setreg_F0s(vfp_reg_offset(dp, reg)); |
491 |
} |
492 |
|
493 |
/* Disassemble system coprocessor (cp15) instruction. Return nonzero if
|
494 |
instruction is not defined. */
|
495 |
static int disas_cp15_insn(DisasContext *s, uint32_t insn) |
496 |
{ |
497 |
uint32_t rd; |
498 |
|
499 |
/* ??? Some cp15 registers are accessible from userspace. */
|
500 |
if (IS_USER(s)) {
|
501 |
return 1; |
502 |
} |
503 |
if ((insn & 0x0fff0fff) == 0x0e070f90 |
504 |
|| (insn & 0x0fff0fff) == 0x0e070f58) { |
505 |
/* Wait for interrupt. */
|
506 |
gen_op_movl_T0_im((long)s->pc);
|
507 |
gen_op_movl_reg_TN[0][15](); |
508 |
gen_op_wfi(); |
509 |
s->is_jmp = DISAS_JUMP; |
510 |
return 0; |
511 |
} |
512 |
rd = (insn >> 12) & 0xf; |
513 |
if (insn & (1 << 20)) { |
514 |
gen_op_movl_T0_cp15(insn); |
515 |
/* If the destination register is r15 then sets condition codes. */
|
516 |
if (rd != 15) |
517 |
gen_movl_reg_T0(s, rd); |
518 |
} else {
|
519 |
gen_movl_T0_reg(s, rd); |
520 |
gen_op_movl_cp15_T0(insn); |
521 |
} |
522 |
gen_lookup_tb(s); |
523 |
return 0; |
524 |
} |
525 |
|
526 |
/* Disassemble a VFP instruction. Returns nonzero if an error occured
|
527 |
(ie. an undefined instruction). */
|
528 |
static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn) |
529 |
{ |
530 |
uint32_t rd, rn, rm, op, i, n, offset, delta_d, delta_m, bank_mask; |
531 |
int dp, veclen;
|
532 |
|
533 |
if (!arm_feature(env, ARM_FEATURE_VFP))
|
534 |
return 1; |
535 |
|
536 |
if ((env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) == 0) { |
537 |
/* VFP disabled. Only allow fmxr/fmrx to/from fpexc and fpsid. */
|
538 |
if ((insn & 0x0fe00fff) != 0x0ee00a10) |
539 |
return 1; |
540 |
rn = (insn >> 16) & 0xf; |
541 |
if (rn != 0 && rn != 8) |
542 |
return 1; |
543 |
} |
544 |
dp = ((insn & 0xf00) == 0xb00); |
545 |
switch ((insn >> 24) & 0xf) { |
546 |
case 0xe: |
547 |
if (insn & (1 << 4)) { |
548 |
/* single register transfer */
|
549 |
if ((insn & 0x6f) != 0x00) |
550 |
return 1; |
551 |
rd = (insn >> 12) & 0xf; |
552 |
if (dp) {
|
553 |
if (insn & 0x80) |
554 |
return 1; |
555 |
rn = (insn >> 16) & 0xf; |
556 |
/* Get the existing value even for arm->vfp moves because
|
557 |
we only set half the register. */
|
558 |
gen_mov_F0_vreg(1, rn);
|
559 |
gen_op_vfp_mrrd(); |
560 |
if (insn & (1 << 20)) { |
561 |
/* vfp->arm */
|
562 |
if (insn & (1 << 21)) |
563 |
gen_movl_reg_T1(s, rd); |
564 |
else
|
565 |
gen_movl_reg_T0(s, rd); |
566 |
} else {
|
567 |
/* arm->vfp */
|
568 |
if (insn & (1 << 21)) |
569 |
gen_movl_T1_reg(s, rd); |
570 |
else
|
571 |
gen_movl_T0_reg(s, rd); |
572 |
gen_op_vfp_mdrr(); |
573 |
gen_mov_vreg_F0(dp, rn); |
574 |
} |
575 |
} else {
|
576 |
rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
577 |
if (insn & (1 << 20)) { |
578 |
/* vfp->arm */
|
579 |
if (insn & (1 << 21)) { |
580 |
/* system register */
|
581 |
rn >>= 1;
|
582 |
switch (rn) {
|
583 |
case ARM_VFP_FPSID:
|
584 |
case ARM_VFP_FPEXC:
|
585 |
case ARM_VFP_FPINST:
|
586 |
case ARM_VFP_FPINST2:
|
587 |
gen_op_vfp_movl_T0_xreg(rn); |
588 |
break;
|
589 |
case ARM_VFP_FPSCR:
|
590 |
if (rd == 15) |
591 |
gen_op_vfp_movl_T0_fpscr_flags(); |
592 |
else
|
593 |
gen_op_vfp_movl_T0_fpscr(); |
594 |
break;
|
595 |
default:
|
596 |
return 1; |
597 |
} |
598 |
} else {
|
599 |
gen_mov_F0_vreg(0, rn);
|
600 |
gen_op_vfp_mrs(); |
601 |
} |
602 |
if (rd == 15) { |
603 |
/* Set the 4 flag bits in the CPSR. */
|
604 |
gen_op_movl_cpsr_T0(0xf0000000);
|
605 |
} else
|
606 |
gen_movl_reg_T0(s, rd); |
607 |
} else {
|
608 |
/* arm->vfp */
|
609 |
gen_movl_T0_reg(s, rd); |
610 |
if (insn & (1 << 21)) { |
611 |
rn >>= 1;
|
612 |
/* system register */
|
613 |
switch (rn) {
|
614 |
case ARM_VFP_FPSID:
|
615 |
/* Writes are ignored. */
|
616 |
break;
|
617 |
case ARM_VFP_FPSCR:
|
618 |
gen_op_vfp_movl_fpscr_T0(); |
619 |
gen_lookup_tb(s); |
620 |
break;
|
621 |
case ARM_VFP_FPEXC:
|
622 |
gen_op_vfp_movl_xreg_T0(rn); |
623 |
gen_lookup_tb(s); |
624 |
break;
|
625 |
case ARM_VFP_FPINST:
|
626 |
case ARM_VFP_FPINST2:
|
627 |
gen_op_vfp_movl_xreg_T0(rn); |
628 |
break;
|
629 |
default:
|
630 |
return 1; |
631 |
} |
632 |
} else {
|
633 |
gen_op_vfp_msr(); |
634 |
gen_mov_vreg_F0(0, rn);
|
635 |
} |
636 |
} |
637 |
} |
638 |
} else {
|
639 |
/* data processing */
|
640 |
/* The opcode is in bits 23, 21, 20 and 6. */
|
641 |
op = ((insn >> 20) & 8) | ((insn >> 19) & 6) | ((insn >> 6) & 1); |
642 |
if (dp) {
|
643 |
if (op == 15) { |
644 |
/* rn is opcode */
|
645 |
rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
646 |
} else {
|
647 |
/* rn is register number */
|
648 |
if (insn & (1 << 7)) |
649 |
return 1; |
650 |
rn = (insn >> 16) & 0xf; |
651 |
} |
652 |
|
653 |
if (op == 15 && (rn == 15 || rn > 17)) { |
654 |
/* Integer or single precision destination. */
|
655 |
rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
656 |
} else {
|
657 |
if (insn & (1 << 22)) |
658 |
return 1; |
659 |
rd = (insn >> 12) & 0xf; |
660 |
} |
661 |
|
662 |
if (op == 15 && (rn == 16 || rn == 17)) { |
663 |
/* Integer source. */
|
664 |
rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
665 |
} else {
|
666 |
if (insn & (1 << 5)) |
667 |
return 1; |
668 |
rm = insn & 0xf;
|
669 |
} |
670 |
} else {
|
671 |
rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
672 |
if (op == 15 && rn == 15) { |
673 |
/* Double precision destination. */
|
674 |
if (insn & (1 << 22)) |
675 |
return 1; |
676 |
rd = (insn >> 12) & 0xf; |
677 |
} else
|
678 |
rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
679 |
rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
680 |
} |
681 |
|
682 |
veclen = env->vfp.vec_len; |
683 |
if (op == 15 && rn > 3) |
684 |
veclen = 0;
|
685 |
|
686 |
/* Shut up compiler warnings. */
|
687 |
delta_m = 0;
|
688 |
delta_d = 0;
|
689 |
bank_mask = 0;
|
690 |
|
691 |
if (veclen > 0) { |
692 |
if (dp)
|
693 |
bank_mask = 0xc;
|
694 |
else
|
695 |
bank_mask = 0x18;
|
696 |
|
697 |
/* Figure out what type of vector operation this is. */
|
698 |
if ((rd & bank_mask) == 0) { |
699 |
/* scalar */
|
700 |
veclen = 0;
|
701 |
} else {
|
702 |
if (dp)
|
703 |
delta_d = (env->vfp.vec_stride >> 1) + 1; |
704 |
else
|
705 |
delta_d = env->vfp.vec_stride + 1;
|
706 |
|
707 |
if ((rm & bank_mask) == 0) { |
708 |
/* mixed scalar/vector */
|
709 |
delta_m = 0;
|
710 |
} else {
|
711 |
/* vector */
|
712 |
delta_m = delta_d; |
713 |
} |
714 |
} |
715 |
} |
716 |
|
717 |
/* Load the initial operands. */
|
718 |
if (op == 15) { |
719 |
switch (rn) {
|
720 |
case 16: |
721 |
case 17: |
722 |
/* Integer source */
|
723 |
gen_mov_F0_vreg(0, rm);
|
724 |
break;
|
725 |
case 8: |
726 |
case 9: |
727 |
/* Compare */
|
728 |
gen_mov_F0_vreg(dp, rd); |
729 |
gen_mov_F1_vreg(dp, rm); |
730 |
break;
|
731 |
case 10: |
732 |
case 11: |
733 |
/* Compare with zero */
|
734 |
gen_mov_F0_vreg(dp, rd); |
735 |
gen_vfp_F1_ld0(dp); |
736 |
break;
|
737 |
default:
|
738 |
/* One source operand. */
|
739 |
gen_mov_F0_vreg(dp, rm); |
740 |
} |
741 |
} else {
|
742 |
/* Two source operands. */
|
743 |
gen_mov_F0_vreg(dp, rn); |
744 |
gen_mov_F1_vreg(dp, rm); |
745 |
} |
746 |
|
747 |
for (;;) {
|
748 |
/* Perform the calculation. */
|
749 |
switch (op) {
|
750 |
case 0: /* mac: fd + (fn * fm) */ |
751 |
gen_vfp_mul(dp); |
752 |
gen_mov_F1_vreg(dp, rd); |
753 |
gen_vfp_add(dp); |
754 |
break;
|
755 |
case 1: /* nmac: fd - (fn * fm) */ |
756 |
gen_vfp_mul(dp); |
757 |
gen_vfp_neg(dp); |
758 |
gen_mov_F1_vreg(dp, rd); |
759 |
gen_vfp_add(dp); |
760 |
break;
|
761 |
case 2: /* msc: -fd + (fn * fm) */ |
762 |
gen_vfp_mul(dp); |
763 |
gen_mov_F1_vreg(dp, rd); |
764 |
gen_vfp_sub(dp); |
765 |
break;
|
766 |
case 3: /* nmsc: -fd - (fn * fm) */ |
767 |
gen_vfp_mul(dp); |
768 |
gen_mov_F1_vreg(dp, rd); |
769 |
gen_vfp_add(dp); |
770 |
gen_vfp_neg(dp); |
771 |
break;
|
772 |
case 4: /* mul: fn * fm */ |
773 |
gen_vfp_mul(dp); |
774 |
break;
|
775 |
case 5: /* nmul: -(fn * fm) */ |
776 |
gen_vfp_mul(dp); |
777 |
gen_vfp_neg(dp); |
778 |
break;
|
779 |
case 6: /* add: fn + fm */ |
780 |
gen_vfp_add(dp); |
781 |
break;
|
782 |
case 7: /* sub: fn - fm */ |
783 |
gen_vfp_sub(dp); |
784 |
break;
|
785 |
case 8: /* div: fn / fm */ |
786 |
gen_vfp_div(dp); |
787 |
break;
|
788 |
case 15: /* extension space */ |
789 |
switch (rn) {
|
790 |
case 0: /* cpy */ |
791 |
/* no-op */
|
792 |
break;
|
793 |
case 1: /* abs */ |
794 |
gen_vfp_abs(dp); |
795 |
break;
|
796 |
case 2: /* neg */ |
797 |
gen_vfp_neg(dp); |
798 |
break;
|
799 |
case 3: /* sqrt */ |
800 |
gen_vfp_sqrt(dp); |
801 |
break;
|
802 |
case 8: /* cmp */ |
803 |
gen_vfp_cmp(dp); |
804 |
break;
|
805 |
case 9: /* cmpe */ |
806 |
gen_vfp_cmpe(dp); |
807 |
break;
|
808 |
case 10: /* cmpz */ |
809 |
gen_vfp_cmp(dp); |
810 |
break;
|
811 |
case 11: /* cmpez */ |
812 |
gen_vfp_F1_ld0(dp); |
813 |
gen_vfp_cmpe(dp); |
814 |
break;
|
815 |
case 15: /* single<->double conversion */ |
816 |
if (dp)
|
817 |
gen_op_vfp_fcvtsd(); |
818 |
else
|
819 |
gen_op_vfp_fcvtds(); |
820 |
break;
|
821 |
case 16: /* fuito */ |
822 |
gen_vfp_uito(dp); |
823 |
break;
|
824 |
case 17: /* fsito */ |
825 |
gen_vfp_sito(dp); |
826 |
break;
|
827 |
case 24: /* ftoui */ |
828 |
gen_vfp_toui(dp); |
829 |
break;
|
830 |
case 25: /* ftouiz */ |
831 |
gen_vfp_touiz(dp); |
832 |
break;
|
833 |
case 26: /* ftosi */ |
834 |
gen_vfp_tosi(dp); |
835 |
break;
|
836 |
case 27: /* ftosiz */ |
837 |
gen_vfp_tosiz(dp); |
838 |
break;
|
839 |
default: /* undefined */ |
840 |
printf ("rn:%d\n", rn);
|
841 |
return 1; |
842 |
} |
843 |
break;
|
844 |
default: /* undefined */ |
845 |
printf ("op:%d\n", op);
|
846 |
return 1; |
847 |
} |
848 |
|
849 |
/* Write back the result. */
|
850 |
if (op == 15 && (rn >= 8 && rn <= 11)) |
851 |
; /* Comparison, do nothing. */
|
852 |
else if (op == 15 && rn > 17) |
853 |
/* Integer result. */
|
854 |
gen_mov_vreg_F0(0, rd);
|
855 |
else if (op == 15 && rn == 15) |
856 |
/* conversion */
|
857 |
gen_mov_vreg_F0(!dp, rd); |
858 |
else
|
859 |
gen_mov_vreg_F0(dp, rd); |
860 |
|
861 |
/* break out of the loop if we have finished */
|
862 |
if (veclen == 0) |
863 |
break;
|
864 |
|
865 |
if (op == 15 && delta_m == 0) { |
866 |
/* single source one-many */
|
867 |
while (veclen--) {
|
868 |
rd = ((rd + delta_d) & (bank_mask - 1))
|
869 |
| (rd & bank_mask); |
870 |
gen_mov_vreg_F0(dp, rd); |
871 |
} |
872 |
break;
|
873 |
} |
874 |
/* Setup the next operands. */
|
875 |
veclen--; |
876 |
rd = ((rd + delta_d) & (bank_mask - 1))
|
877 |
| (rd & bank_mask); |
878 |
|
879 |
if (op == 15) { |
880 |
/* One source operand. */
|
881 |
rm = ((rm + delta_m) & (bank_mask - 1))
|
882 |
| (rm & bank_mask); |
883 |
gen_mov_F0_vreg(dp, rm); |
884 |
} else {
|
885 |
/* Two source operands. */
|
886 |
rn = ((rn + delta_d) & (bank_mask - 1))
|
887 |
| (rn & bank_mask); |
888 |
gen_mov_F0_vreg(dp, rn); |
889 |
if (delta_m) {
|
890 |
rm = ((rm + delta_m) & (bank_mask - 1))
|
891 |
| (rm & bank_mask); |
892 |
gen_mov_F1_vreg(dp, rm); |
893 |
} |
894 |
} |
895 |
} |
896 |
} |
897 |
break;
|
898 |
case 0xc: |
899 |
case 0xd: |
900 |
if (dp && (insn & (1 << 22))) { |
901 |
/* two-register transfer */
|
902 |
rn = (insn >> 16) & 0xf; |
903 |
rd = (insn >> 12) & 0xf; |
904 |
if (dp) {
|
905 |
if (insn & (1 << 5)) |
906 |
return 1; |
907 |
rm = insn & 0xf;
|
908 |
} else
|
909 |
rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
910 |
|
911 |
if (insn & (1 << 20)) { |
912 |
/* vfp->arm */
|
913 |
if (dp) {
|
914 |
gen_mov_F0_vreg(1, rm);
|
915 |
gen_op_vfp_mrrd(); |
916 |
gen_movl_reg_T0(s, rd); |
917 |
gen_movl_reg_T1(s, rn); |
918 |
} else {
|
919 |
gen_mov_F0_vreg(0, rm);
|
920 |
gen_op_vfp_mrs(); |
921 |
gen_movl_reg_T0(s, rn); |
922 |
gen_mov_F0_vreg(0, rm + 1); |
923 |
gen_op_vfp_mrs(); |
924 |
gen_movl_reg_T0(s, rd); |
925 |
} |
926 |
} else {
|
927 |
/* arm->vfp */
|
928 |
if (dp) {
|
929 |
gen_movl_T0_reg(s, rd); |
930 |
gen_movl_T1_reg(s, rn); |
931 |
gen_op_vfp_mdrr(); |
932 |
gen_mov_vreg_F0(1, rm);
|
933 |
} else {
|
934 |
gen_movl_T0_reg(s, rn); |
935 |
gen_op_vfp_msr(); |
936 |
gen_mov_vreg_F0(0, rm);
|
937 |
gen_movl_T0_reg(s, rd); |
938 |
gen_op_vfp_msr(); |
939 |
gen_mov_vreg_F0(0, rm + 1); |
940 |
} |
941 |
} |
942 |
} else {
|
943 |
/* Load/store */
|
944 |
rn = (insn >> 16) & 0xf; |
945 |
if (dp)
|
946 |
rd = (insn >> 12) & 0xf; |
947 |
else
|
948 |
rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
949 |
gen_movl_T1_reg(s, rn); |
950 |
if ((insn & 0x01200000) == 0x01000000) { |
951 |
/* Single load/store */
|
952 |
offset = (insn & 0xff) << 2; |
953 |
if ((insn & (1 << 23)) == 0) |
954 |
offset = -offset; |
955 |
gen_op_addl_T1_im(offset); |
956 |
if (insn & (1 << 20)) { |
957 |
gen_vfp_ld(s, dp); |
958 |
gen_mov_vreg_F0(dp, rd); |
959 |
} else {
|
960 |
gen_mov_F0_vreg(dp, rd); |
961 |
gen_vfp_st(s, dp); |
962 |
} |
963 |
} else {
|
964 |
/* load/store multiple */
|
965 |
if (dp)
|
966 |
n = (insn >> 1) & 0x7f; |
967 |
else
|
968 |
n = insn & 0xff;
|
969 |
|
970 |
if (insn & (1 << 24)) /* pre-decrement */ |
971 |
gen_op_addl_T1_im(-((insn & 0xff) << 2)); |
972 |
|
973 |
if (dp)
|
974 |
offset = 8;
|
975 |
else
|
976 |
offset = 4;
|
977 |
for (i = 0; i < n; i++) { |
978 |
if (insn & (1 << 20)) { |
979 |
/* load */
|
980 |
gen_vfp_ld(s, dp); |
981 |
gen_mov_vreg_F0(dp, rd + i); |
982 |
} else {
|
983 |
/* store */
|
984 |
gen_mov_F0_vreg(dp, rd + i); |
985 |
gen_vfp_st(s, dp); |
986 |
} |
987 |
gen_op_addl_T1_im(offset); |
988 |
} |
989 |
if (insn & (1 << 21)) { |
990 |
/* writeback */
|
991 |
if (insn & (1 << 24)) |
992 |
offset = -offset * n; |
993 |
else if (dp && (insn & 1)) |
994 |
offset = 4;
|
995 |
else
|
996 |
offset = 0;
|
997 |
|
998 |
if (offset != 0) |
999 |
gen_op_addl_T1_im(offset); |
1000 |
gen_movl_reg_T1(s, rn); |
1001 |
} |
1002 |
} |
1003 |
} |
1004 |
break;
|
1005 |
default:
|
1006 |
/* Should never happen. */
|
1007 |
return 1; |
1008 |
} |
1009 |
return 0; |
1010 |
} |
1011 |
|
1012 |
static inline void gen_goto_tb(DisasContext *s, int n, uint32_t dest) |
1013 |
{ |
1014 |
TranslationBlock *tb; |
1015 |
|
1016 |
tb = s->tb; |
1017 |
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
|
1018 |
if (n == 0) |
1019 |
gen_op_goto_tb0(TBPARAM(tb)); |
1020 |
else
|
1021 |
gen_op_goto_tb1(TBPARAM(tb)); |
1022 |
gen_op_movl_T0_im(dest); |
1023 |
gen_op_movl_r15_T0(); |
1024 |
gen_op_movl_T0_im((long)tb + n);
|
1025 |
gen_op_exit_tb(); |
1026 |
} else {
|
1027 |
gen_op_movl_T0_im(dest); |
1028 |
gen_op_movl_r15_T0(); |
1029 |
gen_op_movl_T0_0(); |
1030 |
gen_op_exit_tb(); |
1031 |
} |
1032 |
} |
1033 |
|
1034 |
static inline void gen_jmp (DisasContext *s, uint32_t dest) |
1035 |
{ |
1036 |
if (__builtin_expect(s->singlestep_enabled, 0)) { |
1037 |
/* An indirect jump so that we still trigger the debug exception. */
|
1038 |
if (s->thumb)
|
1039 |
dest |= 1;
|
1040 |
gen_op_movl_T0_im(dest); |
1041 |
gen_bx(s); |
1042 |
} else {
|
1043 |
gen_goto_tb(s, 0, dest);
|
1044 |
s->is_jmp = DISAS_TB_JUMP; |
1045 |
} |
1046 |
} |
1047 |
|
1048 |
static inline void gen_mulxy(int x, int y) |
1049 |
{ |
1050 |
if (x)
|
1051 |
gen_op_sarl_T0_im(16);
|
1052 |
else
|
1053 |
gen_op_sxth_T0(); |
1054 |
if (y)
|
1055 |
gen_op_sarl_T1_im(16);
|
1056 |
else
|
1057 |
gen_op_sxth_T1(); |
1058 |
gen_op_mul_T0_T1(); |
1059 |
} |
1060 |
|
1061 |
/* Return the mask of PSR bits set by a MSR instruction. */
|
1062 |
static uint32_t msr_mask(DisasContext *s, int flags, int spsr) { |
1063 |
uint32_t mask; |
1064 |
|
1065 |
mask = 0;
|
1066 |
if (flags & (1 << 0)) |
1067 |
mask |= 0xff;
|
1068 |
if (flags & (1 << 1)) |
1069 |
mask |= 0xff00;
|
1070 |
if (flags & (1 << 2)) |
1071 |
mask |= 0xff0000;
|
1072 |
if (flags & (1 << 3)) |
1073 |
mask |= 0xff000000;
|
1074 |
/* Mask out undefined bits. */
|
1075 |
mask &= 0xf90f03ff;
|
1076 |
/* Mask out state bits. */
|
1077 |
if (!spsr)
|
1078 |
mask &= ~0x01000020;
|
1079 |
/* Mask out privileged bits. */
|
1080 |
if (IS_USER(s))
|
1081 |
mask &= 0xf80f0200;
|
1082 |
return mask;
|
1083 |
} |
1084 |
|
1085 |
/* Returns nonzero if access to the PSR is not permitted. */
|
1086 |
static int gen_set_psr_T0(DisasContext *s, uint32_t mask, int spsr) |
1087 |
{ |
1088 |
if (spsr) {
|
1089 |
/* ??? This is also undefined in system mode. */
|
1090 |
if (IS_USER(s))
|
1091 |
return 1; |
1092 |
gen_op_movl_spsr_T0(mask); |
1093 |
} else {
|
1094 |
gen_op_movl_cpsr_T0(mask); |
1095 |
} |
1096 |
gen_lookup_tb(s); |
1097 |
return 0; |
1098 |
} |
1099 |
|
1100 |
static void gen_exception_return(DisasContext *s) |
1101 |
{ |
1102 |
gen_op_movl_reg_TN[0][15](); |
1103 |
gen_op_movl_T0_spsr(); |
1104 |
gen_op_movl_cpsr_T0(0xffffffff);
|
1105 |
s->is_jmp = DISAS_UPDATE; |
1106 |
} |
1107 |
|
1108 |
static void disas_arm_insn(CPUState * env, DisasContext *s) |
1109 |
{ |
1110 |
unsigned int cond, insn, val, op1, i, shift, rm, rs, rn, rd, sh; |
1111 |
|
1112 |
insn = ldl_code(s->pc); |
1113 |
s->pc += 4;
|
1114 |
|
1115 |
cond = insn >> 28;
|
1116 |
if (cond == 0xf){ |
1117 |
/* Unconditional instructions. */
|
1118 |
if ((insn & 0x0d70f000) == 0x0550f000) |
1119 |
return; /* PLD */ |
1120 |
else if ((insn & 0x0e000000) == 0x0a000000) { |
1121 |
/* branch link and change to thumb (blx <offset>) */
|
1122 |
int32_t offset; |
1123 |
|
1124 |
val = (uint32_t)s->pc; |
1125 |
gen_op_movl_T0_im(val); |
1126 |
gen_movl_reg_T0(s, 14);
|
1127 |
/* Sign-extend the 24-bit offset */
|
1128 |
offset = (((int32_t)insn) << 8) >> 8; |
1129 |
/* offset * 4 + bit24 * 2 + (thumb bit) */
|
1130 |
val += (offset << 2) | ((insn >> 23) & 2) | 1; |
1131 |
/* pipeline offset */
|
1132 |
val += 4;
|
1133 |
gen_op_movl_T0_im(val); |
1134 |
gen_bx(s); |
1135 |
return;
|
1136 |
} else if ((insn & 0x0fe00000) == 0x0c400000) { |
1137 |
/* Coprocessor double register transfer. */
|
1138 |
} else if ((insn & 0x0f000010) == 0x0e000010) { |
1139 |
/* Additional coprocessor register transfer. */
|
1140 |
} else if ((insn & 0x0ff10010) == 0x01000000) { |
1141 |
/* cps (privileged) */
|
1142 |
} else if ((insn & 0x0ffffdff) == 0x01010000) { |
1143 |
/* setend */
|
1144 |
if (insn & (1 << 9)) { |
1145 |
/* BE8 mode not implemented. */
|
1146 |
goto illegal_op;
|
1147 |
} |
1148 |
return;
|
1149 |
} |
1150 |
goto illegal_op;
|
1151 |
} |
1152 |
if (cond != 0xe) { |
1153 |
/* if not always execute, we generate a conditional jump to
|
1154 |
next instruction */
|
1155 |
s->condlabel = gen_new_label(); |
1156 |
gen_test_cc[cond ^ 1](s->condlabel);
|
1157 |
s->condjmp = 1;
|
1158 |
//gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc);
|
1159 |
//s->is_jmp = DISAS_JUMP_NEXT;
|
1160 |
} |
1161 |
if ((insn & 0x0f900000) == 0x03000000) { |
1162 |
if ((insn & 0x0fb0f000) != 0x0320f000) |
1163 |
goto illegal_op;
|
1164 |
/* CPSR = immediate */
|
1165 |
val = insn & 0xff;
|
1166 |
shift = ((insn >> 8) & 0xf) * 2; |
1167 |
if (shift)
|
1168 |
val = (val >> shift) | (val << (32 - shift));
|
1169 |
gen_op_movl_T0_im(val); |
1170 |
i = ((insn & (1 << 22)) != 0); |
1171 |
if (gen_set_psr_T0(s, msr_mask(s, (insn >> 16) & 0xf, i), i)) |
1172 |
goto illegal_op;
|
1173 |
} else if ((insn & 0x0f900000) == 0x01000000 |
1174 |
&& (insn & 0x00000090) != 0x00000090) { |
1175 |
/* miscellaneous instructions */
|
1176 |
op1 = (insn >> 21) & 3; |
1177 |
sh = (insn >> 4) & 0xf; |
1178 |
rm = insn & 0xf;
|
1179 |
switch (sh) {
|
1180 |
case 0x0: /* move program status register */ |
1181 |
if (op1 & 1) { |
1182 |
/* PSR = reg */
|
1183 |
gen_movl_T0_reg(s, rm); |
1184 |
i = ((op1 & 2) != 0); |
1185 |
if (gen_set_psr_T0(s, msr_mask(s, (insn >> 16) & 0xf, i), i)) |
1186 |
goto illegal_op;
|
1187 |
} else {
|
1188 |
/* reg = PSR */
|
1189 |
rd = (insn >> 12) & 0xf; |
1190 |
if (op1 & 2) { |
1191 |
if (IS_USER(s))
|
1192 |
goto illegal_op;
|
1193 |
gen_op_movl_T0_spsr(); |
1194 |
} else {
|
1195 |
gen_op_movl_T0_cpsr(); |
1196 |
} |
1197 |
gen_movl_reg_T0(s, rd); |
1198 |
} |
1199 |
break;
|
1200 |
case 0x1: |
1201 |
if (op1 == 1) { |
1202 |
/* branch/exchange thumb (bx). */
|
1203 |
gen_movl_T0_reg(s, rm); |
1204 |
gen_bx(s); |
1205 |
} else if (op1 == 3) { |
1206 |
/* clz */
|
1207 |
rd = (insn >> 12) & 0xf; |
1208 |
gen_movl_T0_reg(s, rm); |
1209 |
gen_op_clz_T0(); |
1210 |
gen_movl_reg_T0(s, rd); |
1211 |
} else {
|
1212 |
goto illegal_op;
|
1213 |
} |
1214 |
break;
|
1215 |
case 0x2: |
1216 |
if (op1 == 1) { |
1217 |
ARCH(5J); /* bxj */ |
1218 |
/* Trivial implementation equivalent to bx. */
|
1219 |
gen_movl_T0_reg(s, rm); |
1220 |
gen_bx(s); |
1221 |
} else {
|
1222 |
goto illegal_op;
|
1223 |
} |
1224 |
break;
|
1225 |
case 0x3: |
1226 |
if (op1 != 1) |
1227 |
goto illegal_op;
|
1228 |
|
1229 |
/* branch link/exchange thumb (blx) */
|
1230 |
val = (uint32_t)s->pc; |
1231 |
gen_op_movl_T0_im(val); |
1232 |
gen_movl_reg_T0(s, 14);
|
1233 |
gen_movl_T0_reg(s, rm); |
1234 |
gen_bx(s); |
1235 |
break;
|
1236 |
case 0x5: /* saturating add/subtract */ |
1237 |
rd = (insn >> 12) & 0xf; |
1238 |
rn = (insn >> 16) & 0xf; |
1239 |
gen_movl_T0_reg(s, rm); |
1240 |
gen_movl_T1_reg(s, rn); |
1241 |
if (op1 & 2) |
1242 |
gen_op_double_T1_saturate(); |
1243 |
if (op1 & 1) |
1244 |
gen_op_subl_T0_T1_saturate(); |
1245 |
else
|
1246 |
gen_op_addl_T0_T1_saturate(); |
1247 |
gen_movl_reg_T0(s, rd); |
1248 |
break;
|
1249 |
case 7: /* bkpt */ |
1250 |
gen_op_movl_T0_im((long)s->pc - 4); |
1251 |
gen_op_movl_reg_TN[0][15](); |
1252 |
gen_op_bkpt(); |
1253 |
s->is_jmp = DISAS_JUMP; |
1254 |
break;
|
1255 |
case 0x8: /* signed multiply */ |
1256 |
case 0xa: |
1257 |
case 0xc: |
1258 |
case 0xe: |
1259 |
rs = (insn >> 8) & 0xf; |
1260 |
rn = (insn >> 12) & 0xf; |
1261 |
rd = (insn >> 16) & 0xf; |
1262 |
if (op1 == 1) { |
1263 |
/* (32 * 16) >> 16 */
|
1264 |
gen_movl_T0_reg(s, rm); |
1265 |
gen_movl_T1_reg(s, rs); |
1266 |
if (sh & 4) |
1267 |
gen_op_sarl_T1_im(16);
|
1268 |
else
|
1269 |
gen_op_sxth_T1(); |
1270 |
gen_op_imulw_T0_T1(); |
1271 |
if ((sh & 2) == 0) { |
1272 |
gen_movl_T1_reg(s, rn); |
1273 |
gen_op_addl_T0_T1_setq(); |
1274 |
} |
1275 |
gen_movl_reg_T0(s, rd); |
1276 |
} else {
|
1277 |
/* 16 * 16 */
|
1278 |
gen_movl_T0_reg(s, rm); |
1279 |
gen_movl_T1_reg(s, rs); |
1280 |
gen_mulxy(sh & 2, sh & 4); |
1281 |
if (op1 == 2) { |
1282 |
gen_op_signbit_T1_T0(); |
1283 |
gen_op_addq_T0_T1(rn, rd); |
1284 |
gen_movl_reg_T0(s, rn); |
1285 |
gen_movl_reg_T1(s, rd); |
1286 |
} else {
|
1287 |
if (op1 == 0) { |
1288 |
gen_movl_T1_reg(s, rn); |
1289 |
gen_op_addl_T0_T1_setq(); |
1290 |
} |
1291 |
gen_movl_reg_T0(s, rd); |
1292 |
} |
1293 |
} |
1294 |
break;
|
1295 |
default:
|
1296 |
goto illegal_op;
|
1297 |
} |
1298 |
} else if (((insn & 0x0e000000) == 0 && |
1299 |
(insn & 0x00000090) != 0x90) || |
1300 |
((insn & 0x0e000000) == (1 << 25))) { |
1301 |
int set_cc, logic_cc, shiftop;
|
1302 |
|
1303 |
op1 = (insn >> 21) & 0xf; |
1304 |
set_cc = (insn >> 20) & 1; |
1305 |
logic_cc = table_logic_cc[op1] & set_cc; |
1306 |
|
1307 |
/* data processing instruction */
|
1308 |
if (insn & (1 << 25)) { |
1309 |
/* immediate operand */
|
1310 |
val = insn & 0xff;
|
1311 |
shift = ((insn >> 8) & 0xf) * 2; |
1312 |
if (shift)
|
1313 |
val = (val >> shift) | (val << (32 - shift));
|
1314 |
gen_op_movl_T1_im(val); |
1315 |
if (logic_cc && shift)
|
1316 |
gen_op_mov_CF_T1(); |
1317 |
} else {
|
1318 |
/* register */
|
1319 |
rm = (insn) & 0xf;
|
1320 |
gen_movl_T1_reg(s, rm); |
1321 |
shiftop = (insn >> 5) & 3; |
1322 |
if (!(insn & (1 << 4))) { |
1323 |
shift = (insn >> 7) & 0x1f; |
1324 |
if (shift != 0) { |
1325 |
if (logic_cc) {
|
1326 |
gen_shift_T1_im_cc[shiftop](shift); |
1327 |
} else {
|
1328 |
gen_shift_T1_im[shiftop](shift); |
1329 |
} |
1330 |
} else if (shiftop != 0) { |
1331 |
if (logic_cc) {
|
1332 |
gen_shift_T1_0_cc[shiftop](); |
1333 |
} else {
|
1334 |
gen_shift_T1_0[shiftop](); |
1335 |
} |
1336 |
} |
1337 |
} else {
|
1338 |
rs = (insn >> 8) & 0xf; |
1339 |
gen_movl_T0_reg(s, rs); |
1340 |
if (logic_cc) {
|
1341 |
gen_shift_T1_T0_cc[shiftop](); |
1342 |
} else {
|
1343 |
gen_shift_T1_T0[shiftop](); |
1344 |
} |
1345 |
} |
1346 |
} |
1347 |
if (op1 != 0x0f && op1 != 0x0d) { |
1348 |
rn = (insn >> 16) & 0xf; |
1349 |
gen_movl_T0_reg(s, rn); |
1350 |
} |
1351 |
rd = (insn >> 12) & 0xf; |
1352 |
switch(op1) {
|
1353 |
case 0x00: |
1354 |
gen_op_andl_T0_T1(); |
1355 |
gen_movl_reg_T0(s, rd); |
1356 |
if (logic_cc)
|
1357 |
gen_op_logic_T0_cc(); |
1358 |
break;
|
1359 |
case 0x01: |
1360 |
gen_op_xorl_T0_T1(); |
1361 |
gen_movl_reg_T0(s, rd); |
1362 |
if (logic_cc)
|
1363 |
gen_op_logic_T0_cc(); |
1364 |
break;
|
1365 |
case 0x02: |
1366 |
if (set_cc && rd == 15) { |
1367 |
/* SUBS r15, ... is used for exception return. */
|
1368 |
if (IS_USER(s))
|
1369 |
goto illegal_op;
|
1370 |
gen_op_subl_T0_T1_cc(); |
1371 |
gen_exception_return(s); |
1372 |
} else {
|
1373 |
if (set_cc)
|
1374 |
gen_op_subl_T0_T1_cc(); |
1375 |
else
|
1376 |
gen_op_subl_T0_T1(); |
1377 |
gen_movl_reg_T0(s, rd); |
1378 |
} |
1379 |
break;
|
1380 |
case 0x03: |
1381 |
if (set_cc)
|
1382 |
gen_op_rsbl_T0_T1_cc(); |
1383 |
else
|
1384 |
gen_op_rsbl_T0_T1(); |
1385 |
gen_movl_reg_T0(s, rd); |
1386 |
break;
|
1387 |
case 0x04: |
1388 |
if (set_cc)
|
1389 |
gen_op_addl_T0_T1_cc(); |
1390 |
else
|
1391 |
gen_op_addl_T0_T1(); |
1392 |
gen_movl_reg_T0(s, rd); |
1393 |
break;
|
1394 |
case 0x05: |
1395 |
if (set_cc)
|
1396 |
gen_op_adcl_T0_T1_cc(); |
1397 |
else
|
1398 |
gen_op_adcl_T0_T1(); |
1399 |
gen_movl_reg_T0(s, rd); |
1400 |
break;
|
1401 |
case 0x06: |
1402 |
if (set_cc)
|
1403 |
gen_op_sbcl_T0_T1_cc(); |
1404 |
else
|
1405 |
gen_op_sbcl_T0_T1(); |
1406 |
gen_movl_reg_T0(s, rd); |
1407 |
break;
|
1408 |
case 0x07: |
1409 |
if (set_cc)
|
1410 |
gen_op_rscl_T0_T1_cc(); |
1411 |
else
|
1412 |
gen_op_rscl_T0_T1(); |
1413 |
gen_movl_reg_T0(s, rd); |
1414 |
break;
|
1415 |
case 0x08: |
1416 |
if (set_cc) {
|
1417 |
gen_op_andl_T0_T1(); |
1418 |
gen_op_logic_T0_cc(); |
1419 |
} |
1420 |
break;
|
1421 |
case 0x09: |
1422 |
if (set_cc) {
|
1423 |
gen_op_xorl_T0_T1(); |
1424 |
gen_op_logic_T0_cc(); |
1425 |
} |
1426 |
break;
|
1427 |
case 0x0a: |
1428 |
if (set_cc) {
|
1429 |
gen_op_subl_T0_T1_cc(); |
1430 |
} |
1431 |
break;
|
1432 |
case 0x0b: |
1433 |
if (set_cc) {
|
1434 |
gen_op_addl_T0_T1_cc(); |
1435 |
} |
1436 |
break;
|
1437 |
case 0x0c: |
1438 |
gen_op_orl_T0_T1(); |
1439 |
gen_movl_reg_T0(s, rd); |
1440 |
if (logic_cc)
|
1441 |
gen_op_logic_T0_cc(); |
1442 |
break;
|
1443 |
case 0x0d: |
1444 |
if (logic_cc && rd == 15) { |
1445 |
/* MOVS r15, ... is used for exception return. */
|
1446 |
if (IS_USER(s))
|
1447 |
goto illegal_op;
|
1448 |
gen_op_movl_T0_T1(); |
1449 |
gen_exception_return(s); |
1450 |
} else {
|
1451 |
gen_movl_reg_T1(s, rd); |
1452 |
if (logic_cc)
|
1453 |
gen_op_logic_T1_cc(); |
1454 |
} |
1455 |
break;
|
1456 |
case 0x0e: |
1457 |
gen_op_bicl_T0_T1(); |
1458 |
gen_movl_reg_T0(s, rd); |
1459 |
if (logic_cc)
|
1460 |
gen_op_logic_T0_cc(); |
1461 |
break;
|
1462 |
default:
|
1463 |
case 0x0f: |
1464 |
gen_op_notl_T1(); |
1465 |
gen_movl_reg_T1(s, rd); |
1466 |
if (logic_cc)
|
1467 |
gen_op_logic_T1_cc(); |
1468 |
break;
|
1469 |
} |
1470 |
} else {
|
1471 |
/* other instructions */
|
1472 |
op1 = (insn >> 24) & 0xf; |
1473 |
switch(op1) {
|
1474 |
case 0x0: |
1475 |
case 0x1: |
1476 |
/* multiplies, extra load/stores */
|
1477 |
sh = (insn >> 5) & 3; |
1478 |
if (sh == 0) { |
1479 |
if (op1 == 0x0) { |
1480 |
rd = (insn >> 16) & 0xf; |
1481 |
rn = (insn >> 12) & 0xf; |
1482 |
rs = (insn >> 8) & 0xf; |
1483 |
rm = (insn) & 0xf;
|
1484 |
if (((insn >> 22) & 3) == 0) { |
1485 |
/* 32 bit mul */
|
1486 |
gen_movl_T0_reg(s, rs); |
1487 |
gen_movl_T1_reg(s, rm); |
1488 |
gen_op_mul_T0_T1(); |
1489 |
if (insn & (1 << 21)) { |
1490 |
gen_movl_T1_reg(s, rn); |
1491 |
gen_op_addl_T0_T1(); |
1492 |
} |
1493 |
if (insn & (1 << 20)) |
1494 |
gen_op_logic_T0_cc(); |
1495 |
gen_movl_reg_T0(s, rd); |
1496 |
} else {
|
1497 |
/* 64 bit mul */
|
1498 |
gen_movl_T0_reg(s, rs); |
1499 |
gen_movl_T1_reg(s, rm); |
1500 |
if (insn & (1 << 22)) |
1501 |
gen_op_imull_T0_T1(); |
1502 |
else
|
1503 |
gen_op_mull_T0_T1(); |
1504 |
if (insn & (1 << 21)) /* mult accumulate */ |
1505 |
gen_op_addq_T0_T1(rn, rd); |
1506 |
if (!(insn & (1 << 23))) { /* double accumulate */ |
1507 |
ARCH(6);
|
1508 |
gen_op_addq_lo_T0_T1(rn); |
1509 |
gen_op_addq_lo_T0_T1(rd); |
1510 |
} |
1511 |
if (insn & (1 << 20)) |
1512 |
gen_op_logicq_cc(); |
1513 |
gen_movl_reg_T0(s, rn); |
1514 |
gen_movl_reg_T1(s, rd); |
1515 |
} |
1516 |
} else {
|
1517 |
rn = (insn >> 16) & 0xf; |
1518 |
rd = (insn >> 12) & 0xf; |
1519 |
if (insn & (1 << 23)) { |
1520 |
/* load/store exclusive */
|
1521 |
goto illegal_op;
|
1522 |
} else {
|
1523 |
/* SWP instruction */
|
1524 |
rm = (insn) & 0xf;
|
1525 |
|
1526 |
gen_movl_T0_reg(s, rm); |
1527 |
gen_movl_T1_reg(s, rn); |
1528 |
if (insn & (1 << 22)) { |
1529 |
gen_ldst(swpb, s); |
1530 |
} else {
|
1531 |
gen_ldst(swpl, s); |
1532 |
} |
1533 |
gen_movl_reg_T0(s, rd); |
1534 |
} |
1535 |
} |
1536 |
} else {
|
1537 |
int address_offset;
|
1538 |
/* Misc load/store */
|
1539 |
rn = (insn >> 16) & 0xf; |
1540 |
rd = (insn >> 12) & 0xf; |
1541 |
gen_movl_T1_reg(s, rn); |
1542 |
if (insn & (1 << 24)) |
1543 |
gen_add_datah_offset(s, insn, 0);
|
1544 |
address_offset = 0;
|
1545 |
if (insn & (1 << 20)) { |
1546 |
/* load */
|
1547 |
switch(sh) {
|
1548 |
case 1: |
1549 |
gen_ldst(lduw, s); |
1550 |
break;
|
1551 |
case 2: |
1552 |
gen_ldst(ldsb, s); |
1553 |
break;
|
1554 |
default:
|
1555 |
case 3: |
1556 |
gen_ldst(ldsw, s); |
1557 |
break;
|
1558 |
} |
1559 |
gen_movl_reg_T0(s, rd); |
1560 |
} else if (sh & 2) { |
1561 |
/* doubleword */
|
1562 |
if (sh & 1) { |
1563 |
/* store */
|
1564 |
gen_movl_T0_reg(s, rd); |
1565 |
gen_ldst(stl, s); |
1566 |
gen_op_addl_T1_im(4);
|
1567 |
gen_movl_T0_reg(s, rd + 1);
|
1568 |
gen_ldst(stl, s); |
1569 |
} else {
|
1570 |
/* load */
|
1571 |
gen_ldst(ldl, s); |
1572 |
gen_movl_reg_T0(s, rd); |
1573 |
gen_op_addl_T1_im(4);
|
1574 |
gen_ldst(ldl, s); |
1575 |
gen_movl_reg_T0(s, rd + 1);
|
1576 |
} |
1577 |
address_offset = -4;
|
1578 |
} else {
|
1579 |
/* store */
|
1580 |
gen_movl_T0_reg(s, rd); |
1581 |
gen_ldst(stw, s); |
1582 |
} |
1583 |
if (!(insn & (1 << 24))) { |
1584 |
gen_add_datah_offset(s, insn, address_offset); |
1585 |
gen_movl_reg_T1(s, rn); |
1586 |
} else if (insn & (1 << 21)) { |
1587 |
if (address_offset)
|
1588 |
gen_op_addl_T1_im(address_offset); |
1589 |
gen_movl_reg_T1(s, rn); |
1590 |
} |
1591 |
} |
1592 |
break;
|
1593 |
case 0x4: |
1594 |
case 0x5: |
1595 |
case 0x6: |
1596 |
case 0x7: |
1597 |
/* Check for undefined extension instructions
|
1598 |
* per the ARM Bible IE:
|
1599 |
* xxxx 0111 1111 xxxx xxxx xxxx 1111 xxxx
|
1600 |
*/
|
1601 |
sh = (0xf << 20) | (0xf << 4); |
1602 |
if (op1 == 0x7 && ((insn & sh) == sh)) |
1603 |
{ |
1604 |
goto illegal_op;
|
1605 |
} |
1606 |
/* load/store byte/word */
|
1607 |
rn = (insn >> 16) & 0xf; |
1608 |
rd = (insn >> 12) & 0xf; |
1609 |
gen_movl_T1_reg(s, rn); |
1610 |
i = (IS_USER(s) || (insn & 0x01200000) == 0x00200000); |
1611 |
if (insn & (1 << 24)) |
1612 |
gen_add_data_offset(s, insn); |
1613 |
if (insn & (1 << 20)) { |
1614 |
/* load */
|
1615 |
#if defined(CONFIG_USER_ONLY)
|
1616 |
if (insn & (1 << 22)) |
1617 |
gen_op_ldub_raw(); |
1618 |
else
|
1619 |
gen_op_ldl_raw(); |
1620 |
#else
|
1621 |
if (insn & (1 << 22)) { |
1622 |
if (i)
|
1623 |
gen_op_ldub_user(); |
1624 |
else
|
1625 |
gen_op_ldub_kernel(); |
1626 |
} else {
|
1627 |
if (i)
|
1628 |
gen_op_ldl_user(); |
1629 |
else
|
1630 |
gen_op_ldl_kernel(); |
1631 |
} |
1632 |
#endif
|
1633 |
if (rd == 15) |
1634 |
gen_bx(s); |
1635 |
else
|
1636 |
gen_movl_reg_T0(s, rd); |
1637 |
} else {
|
1638 |
/* store */
|
1639 |
gen_movl_T0_reg(s, rd); |
1640 |
#if defined(CONFIG_USER_ONLY)
|
1641 |
if (insn & (1 << 22)) |
1642 |
gen_op_stb_raw(); |
1643 |
else
|
1644 |
gen_op_stl_raw(); |
1645 |
#else
|
1646 |
if (insn & (1 << 22)) { |
1647 |
if (i)
|
1648 |
gen_op_stb_user(); |
1649 |
else
|
1650 |
gen_op_stb_kernel(); |
1651 |
} else {
|
1652 |
if (i)
|
1653 |
gen_op_stl_user(); |
1654 |
else
|
1655 |
gen_op_stl_kernel(); |
1656 |
} |
1657 |
#endif
|
1658 |
} |
1659 |
if (!(insn & (1 << 24))) { |
1660 |
gen_add_data_offset(s, insn); |
1661 |
gen_movl_reg_T1(s, rn); |
1662 |
} else if (insn & (1 << 21)) |
1663 |
gen_movl_reg_T1(s, rn); { |
1664 |
} |
1665 |
break;
|
1666 |
case 0x08: |
1667 |
case 0x09: |
1668 |
{ |
1669 |
int j, n, user, loaded_base;
|
1670 |
/* load/store multiple words */
|
1671 |
/* XXX: store correct base if write back */
|
1672 |
user = 0;
|
1673 |
if (insn & (1 << 22)) { |
1674 |
if (IS_USER(s))
|
1675 |
goto illegal_op; /* only usable in supervisor mode */ |
1676 |
|
1677 |
if ((insn & (1 << 15)) == 0) |
1678 |
user = 1;
|
1679 |
} |
1680 |
rn = (insn >> 16) & 0xf; |
1681 |
gen_movl_T1_reg(s, rn); |
1682 |
|
1683 |
/* compute total size */
|
1684 |
loaded_base = 0;
|
1685 |
n = 0;
|
1686 |
for(i=0;i<16;i++) { |
1687 |
if (insn & (1 << i)) |
1688 |
n++; |
1689 |
} |
1690 |
/* XXX: test invalid n == 0 case ? */
|
1691 |
if (insn & (1 << 23)) { |
1692 |
if (insn & (1 << 24)) { |
1693 |
/* pre increment */
|
1694 |
gen_op_addl_T1_im(4);
|
1695 |
} else {
|
1696 |
/* post increment */
|
1697 |
} |
1698 |
} else {
|
1699 |
if (insn & (1 << 24)) { |
1700 |
/* pre decrement */
|
1701 |
gen_op_addl_T1_im(-(n * 4));
|
1702 |
} else {
|
1703 |
/* post decrement */
|
1704 |
if (n != 1) |
1705 |
gen_op_addl_T1_im(-((n - 1) * 4)); |
1706 |
} |
1707 |
} |
1708 |
j = 0;
|
1709 |
for(i=0;i<16;i++) { |
1710 |
if (insn & (1 << i)) { |
1711 |
if (insn & (1 << 20)) { |
1712 |
/* load */
|
1713 |
gen_ldst(ldl, s); |
1714 |
if (i == 15) { |
1715 |
gen_bx(s); |
1716 |
} else if (user) { |
1717 |
gen_op_movl_user_T0(i); |
1718 |
} else if (i == rn) { |
1719 |
gen_op_movl_T2_T0(); |
1720 |
loaded_base = 1;
|
1721 |
} else {
|
1722 |
gen_movl_reg_T0(s, i); |
1723 |
} |
1724 |
} else {
|
1725 |
/* store */
|
1726 |
if (i == 15) { |
1727 |
/* special case: r15 = PC + 12 */
|
1728 |
val = (long)s->pc + 8; |
1729 |
gen_op_movl_TN_im[0](val);
|
1730 |
} else if (user) { |
1731 |
gen_op_movl_T0_user(i); |
1732 |
} else {
|
1733 |
gen_movl_T0_reg(s, i); |
1734 |
} |
1735 |
gen_ldst(stl, s); |
1736 |
} |
1737 |
j++; |
1738 |
/* no need to add after the last transfer */
|
1739 |
if (j != n)
|
1740 |
gen_op_addl_T1_im(4);
|
1741 |
} |
1742 |
} |
1743 |
if (insn & (1 << 21)) { |
1744 |
/* write back */
|
1745 |
if (insn & (1 << 23)) { |
1746 |
if (insn & (1 << 24)) { |
1747 |
/* pre increment */
|
1748 |
} else {
|
1749 |
/* post increment */
|
1750 |
gen_op_addl_T1_im(4);
|
1751 |
} |
1752 |
} else {
|
1753 |
if (insn & (1 << 24)) { |
1754 |
/* pre decrement */
|
1755 |
if (n != 1) |
1756 |
gen_op_addl_T1_im(-((n - 1) * 4)); |
1757 |
} else {
|
1758 |
/* post decrement */
|
1759 |
gen_op_addl_T1_im(-(n * 4));
|
1760 |
} |
1761 |
} |
1762 |
gen_movl_reg_T1(s, rn); |
1763 |
} |
1764 |
if (loaded_base) {
|
1765 |
gen_op_movl_T0_T2(); |
1766 |
gen_movl_reg_T0(s, rn); |
1767 |
} |
1768 |
if ((insn & (1 << 22)) && !user) { |
1769 |
/* Restore CPSR from SPSR. */
|
1770 |
gen_op_movl_T0_spsr(); |
1771 |
gen_op_movl_cpsr_T0(0xffffffff);
|
1772 |
s->is_jmp = DISAS_UPDATE; |
1773 |
} |
1774 |
} |
1775 |
break;
|
1776 |
case 0xa: |
1777 |
case 0xb: |
1778 |
{ |
1779 |
int32_t offset; |
1780 |
|
1781 |
/* branch (and link) */
|
1782 |
val = (int32_t)s->pc; |
1783 |
if (insn & (1 << 24)) { |
1784 |
gen_op_movl_T0_im(val); |
1785 |
gen_op_movl_reg_TN[0][14](); |
1786 |
} |
1787 |
offset = (((int32_t)insn << 8) >> 8); |
1788 |
val += (offset << 2) + 4; |
1789 |
gen_jmp(s, val); |
1790 |
} |
1791 |
break;
|
1792 |
case 0xc: |
1793 |
case 0xd: |
1794 |
case 0xe: |
1795 |
/* Coprocessor. */
|
1796 |
op1 = (insn >> 8) & 0xf; |
1797 |
switch (op1) {
|
1798 |
case 10: |
1799 |
case 11: |
1800 |
if (disas_vfp_insn (env, s, insn))
|
1801 |
goto illegal_op;
|
1802 |
break;
|
1803 |
case 15: |
1804 |
if (disas_cp15_insn (s, insn))
|
1805 |
goto illegal_op;
|
1806 |
break;
|
1807 |
default:
|
1808 |
/* unknown coprocessor. */
|
1809 |
goto illegal_op;
|
1810 |
} |
1811 |
break;
|
1812 |
case 0xf: |
1813 |
/* swi */
|
1814 |
gen_op_movl_T0_im((long)s->pc);
|
1815 |
gen_op_movl_reg_TN[0][15](); |
1816 |
gen_op_swi(); |
1817 |
s->is_jmp = DISAS_JUMP; |
1818 |
break;
|
1819 |
default:
|
1820 |
illegal_op:
|
1821 |
gen_op_movl_T0_im((long)s->pc - 4); |
1822 |
gen_op_movl_reg_TN[0][15](); |
1823 |
gen_op_undef_insn(); |
1824 |
s->is_jmp = DISAS_JUMP; |
1825 |
break;
|
1826 |
} |
1827 |
} |
1828 |
} |
1829 |
|
1830 |
static void disas_thumb_insn(DisasContext *s) |
1831 |
{ |
1832 |
uint32_t val, insn, op, rm, rn, rd, shift, cond; |
1833 |
int32_t offset; |
1834 |
int i;
|
1835 |
|
1836 |
insn = lduw_code(s->pc); |
1837 |
s->pc += 2;
|
1838 |
|
1839 |
switch (insn >> 12) { |
1840 |
case 0: case 1: |
1841 |
rd = insn & 7;
|
1842 |
op = (insn >> 11) & 3; |
1843 |
if (op == 3) { |
1844 |
/* add/subtract */
|
1845 |
rn = (insn >> 3) & 7; |
1846 |
gen_movl_T0_reg(s, rn); |
1847 |
if (insn & (1 << 10)) { |
1848 |
/* immediate */
|
1849 |
gen_op_movl_T1_im((insn >> 6) & 7); |
1850 |
} else {
|
1851 |
/* reg */
|
1852 |
rm = (insn >> 6) & 7; |
1853 |
gen_movl_T1_reg(s, rm); |
1854 |
} |
1855 |
if (insn & (1 << 9)) |
1856 |
gen_op_subl_T0_T1_cc(); |
1857 |
else
|
1858 |
gen_op_addl_T0_T1_cc(); |
1859 |
gen_movl_reg_T0(s, rd); |
1860 |
} else {
|
1861 |
/* shift immediate */
|
1862 |
rm = (insn >> 3) & 7; |
1863 |
shift = (insn >> 6) & 0x1f; |
1864 |
gen_movl_T0_reg(s, rm); |
1865 |
gen_shift_T0_im_thumb[op](shift); |
1866 |
gen_movl_reg_T0(s, rd); |
1867 |
} |
1868 |
break;
|
1869 |
case 2: case 3: |
1870 |
/* arithmetic large immediate */
|
1871 |
op = (insn >> 11) & 3; |
1872 |
rd = (insn >> 8) & 0x7; |
1873 |
if (op == 0) { |
1874 |
gen_op_movl_T0_im(insn & 0xff);
|
1875 |
} else {
|
1876 |
gen_movl_T0_reg(s, rd); |
1877 |
gen_op_movl_T1_im(insn & 0xff);
|
1878 |
} |
1879 |
switch (op) {
|
1880 |
case 0: /* mov */ |
1881 |
gen_op_logic_T0_cc(); |
1882 |
break;
|
1883 |
case 1: /* cmp */ |
1884 |
gen_op_subl_T0_T1_cc(); |
1885 |
break;
|
1886 |
case 2: /* add */ |
1887 |
gen_op_addl_T0_T1_cc(); |
1888 |
break;
|
1889 |
case 3: /* sub */ |
1890 |
gen_op_subl_T0_T1_cc(); |
1891 |
break;
|
1892 |
} |
1893 |
if (op != 1) |
1894 |
gen_movl_reg_T0(s, rd); |
1895 |
break;
|
1896 |
case 4: |
1897 |
if (insn & (1 << 11)) { |
1898 |
rd = (insn >> 8) & 7; |
1899 |
/* load pc-relative. Bit 1 of PC is ignored. */
|
1900 |
val = s->pc + 2 + ((insn & 0xff) * 4); |
1901 |
val &= ~(uint32_t)2;
|
1902 |
gen_op_movl_T1_im(val); |
1903 |
gen_ldst(ldl, s); |
1904 |
gen_movl_reg_T0(s, rd); |
1905 |
break;
|
1906 |
} |
1907 |
if (insn & (1 << 10)) { |
1908 |
/* data processing extended or blx */
|
1909 |
rd = (insn & 7) | ((insn >> 4) & 8); |
1910 |
rm = (insn >> 3) & 0xf; |
1911 |
op = (insn >> 8) & 3; |
1912 |
switch (op) {
|
1913 |
case 0: /* add */ |
1914 |
gen_movl_T0_reg(s, rd); |
1915 |
gen_movl_T1_reg(s, rm); |
1916 |
gen_op_addl_T0_T1(); |
1917 |
gen_movl_reg_T0(s, rd); |
1918 |
break;
|
1919 |
case 1: /* cmp */ |
1920 |
gen_movl_T0_reg(s, rd); |
1921 |
gen_movl_T1_reg(s, rm); |
1922 |
gen_op_subl_T0_T1_cc(); |
1923 |
break;
|
1924 |
case 2: /* mov/cpy */ |
1925 |
gen_movl_T0_reg(s, rm); |
1926 |
gen_movl_reg_T0(s, rd); |
1927 |
break;
|
1928 |
case 3:/* branch [and link] exchange thumb register */ |
1929 |
if (insn & (1 << 7)) { |
1930 |
val = (uint32_t)s->pc | 1;
|
1931 |
gen_op_movl_T1_im(val); |
1932 |
gen_movl_reg_T1(s, 14);
|
1933 |
} |
1934 |
gen_movl_T0_reg(s, rm); |
1935 |
gen_bx(s); |
1936 |
break;
|
1937 |
} |
1938 |
break;
|
1939 |
} |
1940 |
|
1941 |
/* data processing register */
|
1942 |
rd = insn & 7;
|
1943 |
rm = (insn >> 3) & 7; |
1944 |
op = (insn >> 6) & 0xf; |
1945 |
if (op == 2 || op == 3 || op == 4 || op == 7) { |
1946 |
/* the shift/rotate ops want the operands backwards */
|
1947 |
val = rm; |
1948 |
rm = rd; |
1949 |
rd = val; |
1950 |
val = 1;
|
1951 |
} else {
|
1952 |
val = 0;
|
1953 |
} |
1954 |
|
1955 |
if (op == 9) /* neg */ |
1956 |
gen_op_movl_T0_im(0);
|
1957 |
else if (op != 0xf) /* mvn doesn't read its first operand */ |
1958 |
gen_movl_T0_reg(s, rd); |
1959 |
|
1960 |
gen_movl_T1_reg(s, rm); |
1961 |
switch (op) {
|
1962 |
case 0x0: /* and */ |
1963 |
gen_op_andl_T0_T1(); |
1964 |
gen_op_logic_T0_cc(); |
1965 |
break;
|
1966 |
case 0x1: /* eor */ |
1967 |
gen_op_xorl_T0_T1(); |
1968 |
gen_op_logic_T0_cc(); |
1969 |
break;
|
1970 |
case 0x2: /* lsl */ |
1971 |
gen_op_shll_T1_T0_cc(); |
1972 |
gen_op_logic_T1_cc(); |
1973 |
break;
|
1974 |
case 0x3: /* lsr */ |
1975 |
gen_op_shrl_T1_T0_cc(); |
1976 |
gen_op_logic_T1_cc(); |
1977 |
break;
|
1978 |
case 0x4: /* asr */ |
1979 |
gen_op_sarl_T1_T0_cc(); |
1980 |
gen_op_logic_T1_cc(); |
1981 |
break;
|
1982 |
case 0x5: /* adc */ |
1983 |
gen_op_adcl_T0_T1_cc(); |
1984 |
break;
|
1985 |
case 0x6: /* sbc */ |
1986 |
gen_op_sbcl_T0_T1_cc(); |
1987 |
break;
|
1988 |
case 0x7: /* ror */ |
1989 |
gen_op_rorl_T1_T0_cc(); |
1990 |
gen_op_logic_T1_cc(); |
1991 |
break;
|
1992 |
case 0x8: /* tst */ |
1993 |
gen_op_andl_T0_T1(); |
1994 |
gen_op_logic_T0_cc(); |
1995 |
rd = 16;
|
1996 |
break;
|
1997 |
case 0x9: /* neg */ |
1998 |
gen_op_subl_T0_T1_cc(); |
1999 |
break;
|
2000 |
case 0xa: /* cmp */ |
2001 |
gen_op_subl_T0_T1_cc(); |
2002 |
rd = 16;
|
2003 |
break;
|
2004 |
case 0xb: /* cmn */ |
2005 |
gen_op_addl_T0_T1_cc(); |
2006 |
rd = 16;
|
2007 |
break;
|
2008 |
case 0xc: /* orr */ |
2009 |
gen_op_orl_T0_T1(); |
2010 |
gen_op_logic_T0_cc(); |
2011 |
break;
|
2012 |
case 0xd: /* mul */ |
2013 |
gen_op_mull_T0_T1(); |
2014 |
gen_op_logic_T0_cc(); |
2015 |
break;
|
2016 |
case 0xe: /* bic */ |
2017 |
gen_op_bicl_T0_T1(); |
2018 |
gen_op_logic_T0_cc(); |
2019 |
break;
|
2020 |
case 0xf: /* mvn */ |
2021 |
gen_op_notl_T1(); |
2022 |
gen_op_logic_T1_cc(); |
2023 |
val = 1;
|
2024 |
rm = rd; |
2025 |
break;
|
2026 |
} |
2027 |
if (rd != 16) { |
2028 |
if (val)
|
2029 |
gen_movl_reg_T1(s, rm); |
2030 |
else
|
2031 |
gen_movl_reg_T0(s, rd); |
2032 |
} |
2033 |
break;
|
2034 |
|
2035 |
case 5: |
2036 |
/* load/store register offset. */
|
2037 |
rd = insn & 7;
|
2038 |
rn = (insn >> 3) & 7; |
2039 |
rm = (insn >> 6) & 7; |
2040 |
op = (insn >> 9) & 7; |
2041 |
gen_movl_T1_reg(s, rn); |
2042 |
gen_movl_T2_reg(s, rm); |
2043 |
gen_op_addl_T1_T2(); |
2044 |
|
2045 |
if (op < 3) /* store */ |
2046 |
gen_movl_T0_reg(s, rd); |
2047 |
|
2048 |
switch (op) {
|
2049 |
case 0: /* str */ |
2050 |
gen_ldst(stl, s); |
2051 |
break;
|
2052 |
case 1: /* strh */ |
2053 |
gen_ldst(stw, s); |
2054 |
break;
|
2055 |
case 2: /* strb */ |
2056 |
gen_ldst(stb, s); |
2057 |
break;
|
2058 |
case 3: /* ldrsb */ |
2059 |
gen_ldst(ldsb, s); |
2060 |
break;
|
2061 |
case 4: /* ldr */ |
2062 |
gen_ldst(ldl, s); |
2063 |
break;
|
2064 |
case 5: /* ldrh */ |
2065 |
gen_ldst(lduw, s); |
2066 |
break;
|
2067 |
case 6: /* ldrb */ |
2068 |
gen_ldst(ldub, s); |
2069 |
break;
|
2070 |
case 7: /* ldrsh */ |
2071 |
gen_ldst(ldsw, s); |
2072 |
break;
|
2073 |
} |
2074 |
if (op >= 3) /* load */ |
2075 |
gen_movl_reg_T0(s, rd); |
2076 |
break;
|
2077 |
|
2078 |
case 6: |
2079 |
/* load/store word immediate offset */
|
2080 |
rd = insn & 7;
|
2081 |
rn = (insn >> 3) & 7; |
2082 |
gen_movl_T1_reg(s, rn); |
2083 |
val = (insn >> 4) & 0x7c; |
2084 |
gen_op_movl_T2_im(val); |
2085 |
gen_op_addl_T1_T2(); |
2086 |
|
2087 |
if (insn & (1 << 11)) { |
2088 |
/* load */
|
2089 |
gen_ldst(ldl, s); |
2090 |
gen_movl_reg_T0(s, rd); |
2091 |
} else {
|
2092 |
/* store */
|
2093 |
gen_movl_T0_reg(s, rd); |
2094 |
gen_ldst(stl, s); |
2095 |
} |
2096 |
break;
|
2097 |
|
2098 |
case 7: |
2099 |
/* load/store byte immediate offset */
|
2100 |
rd = insn & 7;
|
2101 |
rn = (insn >> 3) & 7; |
2102 |
gen_movl_T1_reg(s, rn); |
2103 |
val = (insn >> 6) & 0x1f; |
2104 |
gen_op_movl_T2_im(val); |
2105 |
gen_op_addl_T1_T2(); |
2106 |
|
2107 |
if (insn & (1 << 11)) { |
2108 |
/* load */
|
2109 |
gen_ldst(ldub, s); |
2110 |
gen_movl_reg_T0(s, rd); |
2111 |
} else {
|
2112 |
/* store */
|
2113 |
gen_movl_T0_reg(s, rd); |
2114 |
gen_ldst(stb, s); |
2115 |
} |
2116 |
break;
|
2117 |
|
2118 |
case 8: |
2119 |
/* load/store halfword immediate offset */
|
2120 |
rd = insn & 7;
|
2121 |
rn = (insn >> 3) & 7; |
2122 |
gen_movl_T1_reg(s, rn); |
2123 |
val = (insn >> 5) & 0x3e; |
2124 |
gen_op_movl_T2_im(val); |
2125 |
gen_op_addl_T1_T2(); |
2126 |
|
2127 |
if (insn & (1 << 11)) { |
2128 |
/* load */
|
2129 |
gen_ldst(lduw, s); |
2130 |
gen_movl_reg_T0(s, rd); |
2131 |
} else {
|
2132 |
/* store */
|
2133 |
gen_movl_T0_reg(s, rd); |
2134 |
gen_ldst(stw, s); |
2135 |
} |
2136 |
break;
|
2137 |
|
2138 |
case 9: |
2139 |
/* load/store from stack */
|
2140 |
rd = (insn >> 8) & 7; |
2141 |
gen_movl_T1_reg(s, 13);
|
2142 |
val = (insn & 0xff) * 4; |
2143 |
gen_op_movl_T2_im(val); |
2144 |
gen_op_addl_T1_T2(); |
2145 |
|
2146 |
if (insn & (1 << 11)) { |
2147 |
/* load */
|
2148 |
gen_ldst(ldl, s); |
2149 |
gen_movl_reg_T0(s, rd); |
2150 |
} else {
|
2151 |
/* store */
|
2152 |
gen_movl_T0_reg(s, rd); |
2153 |
gen_ldst(stl, s); |
2154 |
} |
2155 |
break;
|
2156 |
|
2157 |
case 10: |
2158 |
/* add to high reg */
|
2159 |
rd = (insn >> 8) & 7; |
2160 |
if (insn & (1 << 11)) { |
2161 |
/* SP */
|
2162 |
gen_movl_T0_reg(s, 13);
|
2163 |
} else {
|
2164 |
/* PC. bit 1 is ignored. */
|
2165 |
gen_op_movl_T0_im((s->pc + 2) & ~(uint32_t)2); |
2166 |
} |
2167 |
val = (insn & 0xff) * 4; |
2168 |
gen_op_movl_T1_im(val); |
2169 |
gen_op_addl_T0_T1(); |
2170 |
gen_movl_reg_T0(s, rd); |
2171 |
break;
|
2172 |
|
2173 |
case 11: |
2174 |
/* misc */
|
2175 |
op = (insn >> 8) & 0xf; |
2176 |
switch (op) {
|
2177 |
case 0: |
2178 |
/* adjust stack pointer */
|
2179 |
gen_movl_T1_reg(s, 13);
|
2180 |
val = (insn & 0x7f) * 4; |
2181 |
if (insn & (1 << 7)) |
2182 |
val = -(int32_t)val; |
2183 |
gen_op_movl_T2_im(val); |
2184 |
gen_op_addl_T1_T2(); |
2185 |
gen_movl_reg_T1(s, 13);
|
2186 |
break;
|
2187 |
|
2188 |
case 4: case 5: case 0xc: case 0xd: |
2189 |
/* push/pop */
|
2190 |
gen_movl_T1_reg(s, 13);
|
2191 |
if (insn & (1 << 8)) |
2192 |
offset = 4;
|
2193 |
else
|
2194 |
offset = 0;
|
2195 |
for (i = 0; i < 8; i++) { |
2196 |
if (insn & (1 << i)) |
2197 |
offset += 4;
|
2198 |
} |
2199 |
if ((insn & (1 << 11)) == 0) { |
2200 |
gen_op_movl_T2_im(-offset); |
2201 |
gen_op_addl_T1_T2(); |
2202 |
} |
2203 |
gen_op_movl_T2_im(4);
|
2204 |
for (i = 0; i < 8; i++) { |
2205 |
if (insn & (1 << i)) { |
2206 |
if (insn & (1 << 11)) { |
2207 |
/* pop */
|
2208 |
gen_ldst(ldl, s); |
2209 |
gen_movl_reg_T0(s, i); |
2210 |
} else {
|
2211 |
/* push */
|
2212 |
gen_movl_T0_reg(s, i); |
2213 |
gen_ldst(stl, s); |
2214 |
} |
2215 |
/* advance to the next address. */
|
2216 |
gen_op_addl_T1_T2(); |
2217 |
} |
2218 |
} |
2219 |
if (insn & (1 << 8)) { |
2220 |
if (insn & (1 << 11)) { |
2221 |
/* pop pc */
|
2222 |
gen_ldst(ldl, s); |
2223 |
/* don't set the pc until the rest of the instruction
|
2224 |
has completed */
|
2225 |
} else {
|
2226 |
/* push lr */
|
2227 |
gen_movl_T0_reg(s, 14);
|
2228 |
gen_ldst(stl, s); |
2229 |
} |
2230 |
gen_op_addl_T1_T2(); |
2231 |
} |
2232 |
if ((insn & (1 << 11)) == 0) { |
2233 |
gen_op_movl_T2_im(-offset); |
2234 |
gen_op_addl_T1_T2(); |
2235 |
} |
2236 |
/* write back the new stack pointer */
|
2237 |
gen_movl_reg_T1(s, 13);
|
2238 |
/* set the new PC value */
|
2239 |
if ((insn & 0x0900) == 0x0900) |
2240 |
gen_bx(s); |
2241 |
break;
|
2242 |
|
2243 |
case 0xe: /* bkpt */ |
2244 |
gen_op_movl_T0_im((long)s->pc - 2); |
2245 |
gen_op_movl_reg_TN[0][15](); |
2246 |
gen_op_bkpt(); |
2247 |
s->is_jmp = DISAS_JUMP; |
2248 |
break;
|
2249 |
|
2250 |
default:
|
2251 |
goto undef;
|
2252 |
} |
2253 |
break;
|
2254 |
|
2255 |
case 12: |
2256 |
/* load/store multiple */
|
2257 |
rn = (insn >> 8) & 0x7; |
2258 |
gen_movl_T1_reg(s, rn); |
2259 |
gen_op_movl_T2_im(4);
|
2260 |
for (i = 0; i < 8; i++) { |
2261 |
if (insn & (1 << i)) { |
2262 |
if (insn & (1 << 11)) { |
2263 |
/* load */
|
2264 |
gen_ldst(ldl, s); |
2265 |
gen_movl_reg_T0(s, i); |
2266 |
} else {
|
2267 |
/* store */
|
2268 |
gen_movl_T0_reg(s, i); |
2269 |
gen_ldst(stl, s); |
2270 |
} |
2271 |
/* advance to the next address */
|
2272 |
gen_op_addl_T1_T2(); |
2273 |
} |
2274 |
} |
2275 |
/* Base register writeback. */
|
2276 |
if ((insn & (1 << rn)) == 0) |
2277 |
gen_movl_reg_T1(s, rn); |
2278 |
break;
|
2279 |
|
2280 |
case 13: |
2281 |
/* conditional branch or swi */
|
2282 |
cond = (insn >> 8) & 0xf; |
2283 |
if (cond == 0xe) |
2284 |
goto undef;
|
2285 |
|
2286 |
if (cond == 0xf) { |
2287 |
/* swi */
|
2288 |
gen_op_movl_T0_im((long)s->pc | 1); |
2289 |
/* Don't set r15. */
|
2290 |
gen_op_movl_reg_TN[0][15](); |
2291 |
gen_op_swi(); |
2292 |
s->is_jmp = DISAS_JUMP; |
2293 |
break;
|
2294 |
} |
2295 |
/* generate a conditional jump to next instruction */
|
2296 |
s->condlabel = gen_new_label(); |
2297 |
gen_test_cc[cond ^ 1](s->condlabel);
|
2298 |
s->condjmp = 1;
|
2299 |
//gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc);
|
2300 |
//s->is_jmp = DISAS_JUMP_NEXT;
|
2301 |
gen_movl_T1_reg(s, 15);
|
2302 |
|
2303 |
/* jump to the offset */
|
2304 |
val = (uint32_t)s->pc + 2;
|
2305 |
offset = ((int32_t)insn << 24) >> 24; |
2306 |
val += offset << 1;
|
2307 |
gen_jmp(s, val); |
2308 |
break;
|
2309 |
|
2310 |
case 14: |
2311 |
/* unconditional branch */
|
2312 |
if (insn & (1 << 11)) { |
2313 |
/* Second half of blx. */
|
2314 |
offset = ((insn & 0x7ff) << 1); |
2315 |
gen_movl_T0_reg(s, 14);
|
2316 |
gen_op_movl_T1_im(offset); |
2317 |
gen_op_addl_T0_T1(); |
2318 |
gen_op_movl_T1_im(0xfffffffc);
|
2319 |
gen_op_andl_T0_T1(); |
2320 |
|
2321 |
val = (uint32_t)s->pc; |
2322 |
gen_op_movl_T1_im(val | 1);
|
2323 |
gen_movl_reg_T1(s, 14);
|
2324 |
gen_bx(s); |
2325 |
break;
|
2326 |
} |
2327 |
val = (uint32_t)s->pc; |
2328 |
offset = ((int32_t)insn << 21) >> 21; |
2329 |
val += (offset << 1) + 2; |
2330 |
gen_jmp(s, val); |
2331 |
break;
|
2332 |
|
2333 |
case 15: |
2334 |
/* branch and link [and switch to arm] */
|
2335 |
if ((s->pc & ~TARGET_PAGE_MASK) == 0) { |
2336 |
/* Instruction spans a page boundary. Implement it as two
|
2337 |
16-bit instructions in case the second half causes an
|
2338 |
prefetch abort. */
|
2339 |
offset = ((int32_t)insn << 21) >> 9; |
2340 |
val = s->pc + 2 + offset;
|
2341 |
gen_op_movl_T0_im(val); |
2342 |
gen_movl_reg_T0(s, 14);
|
2343 |
break;
|
2344 |
} |
2345 |
if (insn & (1 << 11)) { |
2346 |
/* Second half of bl. */
|
2347 |
offset = ((insn & 0x7ff) << 1) | 1; |
2348 |
gen_movl_T0_reg(s, 14);
|
2349 |
gen_op_movl_T1_im(offset); |
2350 |
gen_op_addl_T0_T1(); |
2351 |
|
2352 |
val = (uint32_t)s->pc; |
2353 |
gen_op_movl_T1_im(val | 1);
|
2354 |
gen_movl_reg_T1(s, 14);
|
2355 |
gen_bx(s); |
2356 |
break;
|
2357 |
} |
2358 |
offset = ((int32_t)insn << 21) >> 10; |
2359 |
insn = lduw_code(s->pc); |
2360 |
offset |= insn & 0x7ff;
|
2361 |
|
2362 |
val = (uint32_t)s->pc + 2;
|
2363 |
gen_op_movl_T1_im(val | 1);
|
2364 |
gen_movl_reg_T1(s, 14);
|
2365 |
|
2366 |
val += offset << 1;
|
2367 |
if (insn & (1 << 12)) { |
2368 |
/* bl */
|
2369 |
gen_jmp(s, val); |
2370 |
} else {
|
2371 |
/* blx */
|
2372 |
val &= ~(uint32_t)2;
|
2373 |
gen_op_movl_T0_im(val); |
2374 |
gen_bx(s); |
2375 |
} |
2376 |
} |
2377 |
return;
|
2378 |
undef:
|
2379 |
gen_op_movl_T0_im((long)s->pc - 2); |
2380 |
gen_op_movl_reg_TN[0][15](); |
2381 |
gen_op_undef_insn(); |
2382 |
s->is_jmp = DISAS_JUMP; |
2383 |
} |
2384 |
|
2385 |
/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
|
2386 |
basic block 'tb'. If search_pc is TRUE, also generate PC
|
2387 |
information for each intermediate instruction. */
|
2388 |
static inline int gen_intermediate_code_internal(CPUState *env, |
2389 |
TranslationBlock *tb, |
2390 |
int search_pc)
|
2391 |
{ |
2392 |
DisasContext dc1, *dc = &dc1; |
2393 |
uint16_t *gen_opc_end; |
2394 |
int j, lj;
|
2395 |
target_ulong pc_start; |
2396 |
uint32_t next_page_start; |
2397 |
|
2398 |
/* generate intermediate code */
|
2399 |
pc_start = tb->pc; |
2400 |
|
2401 |
dc->tb = tb; |
2402 |
|
2403 |
gen_opc_ptr = gen_opc_buf; |
2404 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
2405 |
gen_opparam_ptr = gen_opparam_buf; |
2406 |
|
2407 |
dc->is_jmp = DISAS_NEXT; |
2408 |
dc->pc = pc_start; |
2409 |
dc->singlestep_enabled = env->singlestep_enabled; |
2410 |
dc->condjmp = 0;
|
2411 |
dc->thumb = env->thumb; |
2412 |
#if !defined(CONFIG_USER_ONLY)
|
2413 |
dc->user = (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_USR;
|
2414 |
#endif
|
2415 |
next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; |
2416 |
nb_gen_labels = 0;
|
2417 |
lj = -1;
|
2418 |
do {
|
2419 |
if (env->nb_breakpoints > 0) { |
2420 |
for(j = 0; j < env->nb_breakpoints; j++) { |
2421 |
if (env->breakpoints[j] == dc->pc) {
|
2422 |
gen_op_movl_T0_im((long)dc->pc);
|
2423 |
gen_op_movl_reg_TN[0][15](); |
2424 |
gen_op_debug(); |
2425 |
dc->is_jmp = DISAS_JUMP; |
2426 |
break;
|
2427 |
} |
2428 |
} |
2429 |
} |
2430 |
if (search_pc) {
|
2431 |
j = gen_opc_ptr - gen_opc_buf; |
2432 |
if (lj < j) {
|
2433 |
lj++; |
2434 |
while (lj < j)
|
2435 |
gen_opc_instr_start[lj++] = 0;
|
2436 |
} |
2437 |
gen_opc_pc[lj] = dc->pc; |
2438 |
gen_opc_instr_start[lj] = 1;
|
2439 |
} |
2440 |
|
2441 |
if (env->thumb)
|
2442 |
disas_thumb_insn(dc); |
2443 |
else
|
2444 |
disas_arm_insn(env, dc); |
2445 |
|
2446 |
if (dc->condjmp && !dc->is_jmp) {
|
2447 |
gen_set_label(dc->condlabel); |
2448 |
dc->condjmp = 0;
|
2449 |
} |
2450 |
/* Translation stops when a conditional branch is enoutered.
|
2451 |
* Otherwise the subsequent code could get translated several times.
|
2452 |
* Also stop translation when a page boundary is reached. This
|
2453 |
* ensures prefech aborts occur at the right place. */
|
2454 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
|
2455 |
!env->singlestep_enabled && |
2456 |
dc->pc < next_page_start); |
2457 |
/* At this stage dc->condjmp will only be set when the skipped
|
2458 |
* instruction was a conditional branch, and the PC has already been
|
2459 |
* written. */
|
2460 |
if (__builtin_expect(env->singlestep_enabled, 0)) { |
2461 |
/* Make sure the pc is updated, and raise a debug exception. */
|
2462 |
if (dc->condjmp) {
|
2463 |
gen_op_debug(); |
2464 |
gen_set_label(dc->condlabel); |
2465 |
} |
2466 |
if (dc->condjmp || !dc->is_jmp) {
|
2467 |
gen_op_movl_T0_im((long)dc->pc);
|
2468 |
gen_op_movl_reg_TN[0][15](); |
2469 |
dc->condjmp = 0;
|
2470 |
} |
2471 |
gen_op_debug(); |
2472 |
} else {
|
2473 |
switch(dc->is_jmp) {
|
2474 |
case DISAS_NEXT:
|
2475 |
gen_goto_tb(dc, 1, dc->pc);
|
2476 |
break;
|
2477 |
default:
|
2478 |
case DISAS_JUMP:
|
2479 |
case DISAS_UPDATE:
|
2480 |
/* indicate that the hash table must be used to find the next TB */
|
2481 |
gen_op_movl_T0_0(); |
2482 |
gen_op_exit_tb(); |
2483 |
break;
|
2484 |
case DISAS_TB_JUMP:
|
2485 |
/* nothing more to generate */
|
2486 |
break;
|
2487 |
} |
2488 |
if (dc->condjmp) {
|
2489 |
gen_set_label(dc->condlabel); |
2490 |
gen_goto_tb(dc, 1, dc->pc);
|
2491 |
dc->condjmp = 0;
|
2492 |
} |
2493 |
} |
2494 |
*gen_opc_ptr = INDEX_op_end; |
2495 |
|
2496 |
#ifdef DEBUG_DISAS
|
2497 |
if (loglevel & CPU_LOG_TB_IN_ASM) {
|
2498 |
fprintf(logfile, "----------------\n");
|
2499 |
fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
|
2500 |
target_disas(logfile, pc_start, dc->pc - pc_start, env->thumb); |
2501 |
fprintf(logfile, "\n");
|
2502 |
if (loglevel & (CPU_LOG_TB_OP)) {
|
2503 |
fprintf(logfile, "OP:\n");
|
2504 |
dump_ops(gen_opc_buf, gen_opparam_buf); |
2505 |
fprintf(logfile, "\n");
|
2506 |
} |
2507 |
} |
2508 |
#endif
|
2509 |
if (search_pc) {
|
2510 |
j = gen_opc_ptr - gen_opc_buf; |
2511 |
lj++; |
2512 |
while (lj <= j)
|
2513 |
gen_opc_instr_start[lj++] = 0;
|
2514 |
tb->size = 0;
|
2515 |
} else {
|
2516 |
tb->size = dc->pc - pc_start; |
2517 |
} |
2518 |
return 0; |
2519 |
} |
2520 |
|
2521 |
int gen_intermediate_code(CPUState *env, TranslationBlock *tb)
|
2522 |
{ |
2523 |
return gen_intermediate_code_internal(env, tb, 0); |
2524 |
} |
2525 |
|
2526 |
int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
|
2527 |
{ |
2528 |
return gen_intermediate_code_internal(env, tb, 1); |
2529 |
} |
2530 |
|
2531 |
static const char *cpu_mode_names[16] = { |
2532 |
"usr", "fiq", "irq", "svc", "???", "???", "???", "abt", |
2533 |
"???", "???", "???", "und", "???", "???", "???", "sys" |
2534 |
}; |
2535 |
void cpu_dump_state(CPUState *env, FILE *f,
|
2536 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
2537 |
int flags)
|
2538 |
{ |
2539 |
int i;
|
2540 |
union {
|
2541 |
uint32_t i; |
2542 |
float s;
|
2543 |
} s0, s1; |
2544 |
CPU_DoubleU d; |
2545 |
uint32_t psr; |
2546 |
|
2547 |
for(i=0;i<16;i++) { |
2548 |
cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]);
|
2549 |
if ((i % 4) == 3) |
2550 |
cpu_fprintf(f, "\n");
|
2551 |
else
|
2552 |
cpu_fprintf(f, " ");
|
2553 |
} |
2554 |
psr = cpsr_read(env); |
2555 |
cpu_fprintf(f, "PSR=%08x %c%c%c%c %c %s%d %x\n",
|
2556 |
psr, |
2557 |
psr & (1 << 31) ? 'N' : '-', |
2558 |
psr & (1 << 30) ? 'Z' : '-', |
2559 |
psr & (1 << 29) ? 'C' : '-', |
2560 |
psr & (1 << 28) ? 'V' : '-', |
2561 |
psr & CPSR_T ? 'T' : 'A', |
2562 |
cpu_mode_names[psr & 0xf], (psr & 0x10) ? 32 : 26); |
2563 |
|
2564 |
for (i = 0; i < 16; i++) { |
2565 |
d.d = env->vfp.regs[i]; |
2566 |
s0.i = d.l.lower; |
2567 |
s1.i = d.l.upper; |
2568 |
cpu_fprintf(f, "s%02d=%08x(%8f) s%02d=%08x(%8f) d%02d=%08x%08x(%8f)\n",
|
2569 |
i * 2, (int)s0.i, s0.s, |
2570 |
i * 2 + 1, (int)s0.i, s0.s, |
2571 |
i, (int)(uint32_t)d.l.upper, (int)(uint32_t)d.l.lower, |
2572 |
d.d); |
2573 |
} |
2574 |
cpu_fprintf(f, "FPSCR: %08x\n", (int)env->vfp.xregs[ARM_VFP_FPSCR]); |
2575 |
} |
2576 |
|