| /* |
| * ARM translation |
| * |
| * Copyright (c) 2003 Fabrice Bellard |
| * Copyright (c) 2005 CodeSourcery, LLC |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include <stdarg.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <inttypes.h> |
| |
| #include "cpu.h" |
| #include "exec-all.h" |
| #include "disas.h" |
| |
| #define ENABLE_ARCH_5J 0 |
| #define ENABLE_ARCH_6 1 |
| #define ENABLE_ARCH_6T2 1 |
| |
| #define ARCH(x) if (!ENABLE_ARCH_##x) goto illegal_op; |
| |
| /* internal defines */ |
| typedef struct DisasContext { |
| target_ulong pc; |
| int is_jmp; |
| /* Nonzero if this instruction has been conditionally skipped. */ |
| int condjmp; |
| /* The label that will be jumped to when the instruction is skipped. */ |
| int condlabel; |
| struct TranslationBlock *tb; |
| int singlestep_enabled; |
| int thumb; |
| #if !defined(CONFIG_USER_ONLY) |
| int user; |
| #endif |
| } DisasContext; |
| |
| #if defined(CONFIG_USER_ONLY) |
| #define IS_USER(s) 1 |
| #else |
| #define IS_USER(s) (s->user) |
| #endif |
| |
| #define DISAS_JUMP_NEXT 4 |
| |
| #ifdef USE_DIRECT_JUMP |
| #define TBPARAM(x) |
| #else |
| #define TBPARAM(x) (long)(x) |
| #endif |
| |
| /* XXX: move that elsewhere */ |
| static uint16_t *gen_opc_ptr; |
| static uint32_t *gen_opparam_ptr; |
| extern FILE *logfile; |
| extern int loglevel; |
| |
| enum { |
| #define DEF(s, n, copy_size) INDEX_op_ ## s, |
| #include "opc.h" |
| #undef DEF |
| NB_OPS, |
| }; |
| |
| #include "gen-op.h" |
| |
| static GenOpFunc1 *gen_test_cc[14] = { |
| gen_op_test_eq, |
| gen_op_test_ne, |
| gen_op_test_cs, |
| gen_op_test_cc, |
| gen_op_test_mi, |
| gen_op_test_pl, |
| gen_op_test_vs, |
| gen_op_test_vc, |
| gen_op_test_hi, |
| gen_op_test_ls, |
| gen_op_test_ge, |
| gen_op_test_lt, |
| gen_op_test_gt, |
| gen_op_test_le, |
| }; |
| |
| const uint8_t table_logic_cc[16] = { |
| 1, /* and */ |
| 1, /* xor */ |
| 0, /* sub */ |
| 0, /* rsb */ |
| 0, /* add */ |
| 0, /* adc */ |
| 0, /* sbc */ |
| 0, /* rsc */ |
| 1, /* andl */ |
| 1, /* xorl */ |
| 0, /* cmp */ |
| 0, /* cmn */ |
| 1, /* orr */ |
| 1, /* mov */ |
| 1, /* bic */ |
| 1, /* mvn */ |
| }; |
| |
| static GenOpFunc1 *gen_shift_T1_im[4] = { |
| gen_op_shll_T1_im, |
| gen_op_shrl_T1_im, |
| gen_op_sarl_T1_im, |
| gen_op_rorl_T1_im, |
| }; |
| |
| static GenOpFunc *gen_shift_T1_0[4] = { |
| NULL, |
| gen_op_shrl_T1_0, |
| gen_op_sarl_T1_0, |
| gen_op_rrxl_T1, |
| }; |
| |
| static GenOpFunc1 *gen_shift_T2_im[4] = { |
| gen_op_shll_T2_im, |
| gen_op_shrl_T2_im, |
| gen_op_sarl_T2_im, |
| gen_op_rorl_T2_im, |
| }; |
| |
| static GenOpFunc *gen_shift_T2_0[4] = { |
| NULL, |
| gen_op_shrl_T2_0, |
| gen_op_sarl_T2_0, |
| gen_op_rrxl_T2, |
| }; |
| |
| static GenOpFunc1 *gen_shift_T1_im_cc[4] = { |
| gen_op_shll_T1_im_cc, |
| gen_op_shrl_T1_im_cc, |
| gen_op_sarl_T1_im_cc, |
| gen_op_rorl_T1_im_cc, |
| }; |
| |
| static GenOpFunc *gen_shift_T1_0_cc[4] = { |
| NULL, |
| gen_op_shrl_T1_0_cc, |
| gen_op_sarl_T1_0_cc, |
| gen_op_rrxl_T1_cc, |
| }; |
| |
| static GenOpFunc *gen_shift_T1_T0[4] = { |
| gen_op_shll_T1_T0, |
| gen_op_shrl_T1_T0, |
| gen_op_sarl_T1_T0, |
| gen_op_rorl_T1_T0, |
| }; |
| |
| static GenOpFunc *gen_shift_T1_T0_cc[4] = { |
| gen_op_shll_T1_T0_cc, |
| gen_op_shrl_T1_T0_cc, |
| gen_op_sarl_T1_T0_cc, |
| gen_op_rorl_T1_T0_cc, |
| }; |
| |
| static GenOpFunc *gen_op_movl_TN_reg[3][16] = { |
| { |
| gen_op_movl_T0_r0, |
| gen_op_movl_T0_r1, |
| gen_op_movl_T0_r2, |
| gen_op_movl_T0_r3, |
| gen_op_movl_T0_r4, |
| gen_op_movl_T0_r5, |
| gen_op_movl_T0_r6, |
| gen_op_movl_T0_r7, |
| gen_op_movl_T0_r8, |
| gen_op_movl_T0_r9, |
| gen_op_movl_T0_r10, |
| gen_op_movl_T0_r11, |
| gen_op_movl_T0_r12, |
| gen_op_movl_T0_r13, |
| gen_op_movl_T0_r14, |
| gen_op_movl_T0_r15, |
| }, |
| { |
| gen_op_movl_T1_r0, |
| gen_op_movl_T1_r1, |
| gen_op_movl_T1_r2, |
| gen_op_movl_T1_r3, |
| gen_op_movl_T1_r4, |
| gen_op_movl_T1_r5, |
| gen_op_movl_T1_r6, |
| gen_op_movl_T1_r7, |
| gen_op_movl_T1_r8, |
| gen_op_movl_T1_r9, |
| gen_op_movl_T1_r10, |
| gen_op_movl_T1_r11, |
| gen_op_movl_T1_r12, |
| gen_op_movl_T1_r13, |
| gen_op_movl_T1_r14, |
| gen_op_movl_T1_r15, |
| }, |
| { |
| gen_op_movl_T2_r0, |
| gen_op_movl_T2_r1, |
| gen_op_movl_T2_r2, |
| gen_op_movl_T2_r3, |
| gen_op_movl_T2_r4, |
| gen_op_movl_T2_r5, |
| gen_op_movl_T2_r6, |
| gen_op_movl_T2_r7, |
| gen_op_movl_T2_r8, |
| gen_op_movl_T2_r9, |
| gen_op_movl_T2_r10, |
| gen_op_movl_T2_r11, |
| gen_op_movl_T2_r12, |
| gen_op_movl_T2_r13, |
| gen_op_movl_T2_r14, |
| gen_op_movl_T2_r15, |
| }, |
| }; |
| |
| static GenOpFunc *gen_op_movl_reg_TN[2][16] = { |
| { |
| gen_op_movl_r0_T0, |
| gen_op_movl_r1_T0, |
| gen_op_movl_r2_T0, |
| gen_op_movl_r3_T0, |
| gen_op_movl_r4_T0, |
| gen_op_movl_r5_T0, |
| gen_op_movl_r6_T0, |
| gen_op_movl_r7_T0, |
| gen_op_movl_r8_T0, |
| gen_op_movl_r9_T0, |
| gen_op_movl_r10_T0, |
| gen_op_movl_r11_T0, |
| gen_op_movl_r12_T0, |
| gen_op_movl_r13_T0, |
| gen_op_movl_r14_T0, |
| gen_op_movl_r15_T0, |
| }, |
| { |
| gen_op_movl_r0_T1, |
| gen_op_movl_r1_T1, |
| gen_op_movl_r2_T1, |
| gen_op_movl_r3_T1, |
| gen_op_movl_r4_T1, |
| gen_op_movl_r5_T1, |
| gen_op_movl_r6_T1, |
| gen_op_movl_r7_T1, |
| gen_op_movl_r8_T1, |
| gen_op_movl_r9_T1, |
| gen_op_movl_r10_T1, |
| gen_op_movl_r11_T1, |
| gen_op_movl_r12_T1, |
| gen_op_movl_r13_T1, |
| gen_op_movl_r14_T1, |
| gen_op_movl_r15_T1, |
| }, |
| }; |
| |
| static GenOpFunc1 *gen_op_movl_TN_im[3] = { |
| gen_op_movl_T0_im, |
| gen_op_movl_T1_im, |
| gen_op_movl_T2_im, |
| }; |
| |
| static GenOpFunc1 *gen_shift_T0_im_thumb[3] = { |
| gen_op_shll_T0_im_thumb, |
| gen_op_shrl_T0_im_thumb, |
| gen_op_sarl_T0_im_thumb, |
| }; |
| |
| static inline void gen_bx(DisasContext *s) |
| { |
| s->is_jmp = DISAS_UPDATE; |
| gen_op_bx_T0(); |
| } |
| |
| |
| #if defined(CONFIG_USER_ONLY) |
| #define gen_ldst(name, s) gen_op_##name##_raw() |
| #else |
| #define gen_ldst(name, s) do { \ |
| if (IS_USER(s)) \ |
| gen_op_##name##_user(); \ |
| else \ |
| gen_op_##name##_kernel(); \ |
| } while (0) |
| #endif |
| |
| static inline void gen_movl_TN_reg(DisasContext *s, int reg, int t) |
| { |
| int val; |
| |
| if (reg == 15) { |
| /* normaly, since we updated PC, we need only to add one insn */ |
| if (s->thumb) |
| val = (long)s->pc + 2; |
| else |
| val = (long)s->pc + 4; |
| gen_op_movl_TN_im[t](val); |
| } else { |
| gen_op_movl_TN_reg[t][reg](); |
| } |
| } |
| |
| static inline void gen_movl_T0_reg(DisasContext *s, int reg) |
| { |
| gen_movl_TN_reg(s, reg, 0); |
| } |
| |
| static inline void gen_movl_T1_reg(DisasContext *s, int reg) |
| { |
| gen_movl_TN_reg(s, reg, 1); |
| } |
| |
| static inline void gen_movl_T2_reg(DisasContext *s, int reg) |
| { |
| gen_movl_TN_reg(s, reg, 2); |
| } |
| |
| static inline void gen_movl_reg_TN(DisasContext *s, int reg, int t) |
| { |
| gen_op_movl_reg_TN[t][reg](); |
| if (reg == 15) { |
| s->is_jmp = DISAS_JUMP; |
| } |
| } |
| |
| static inline void gen_movl_reg_T0(DisasContext *s, int reg) |
| { |
| gen_movl_reg_TN(s, reg, 0); |
| } |
| |
| static inline void gen_movl_reg_T1(DisasContext *s, int reg) |
| { |
| gen_movl_reg_TN(s, reg, 1); |
| } |
| |
| /* Force a TB lookup after an instruction that changes the CPU state. */ |
| static inline void gen_lookup_tb(DisasContext *s) |
| { |
| gen_op_movl_T0_im(s->pc); |
| gen_movl_reg_T0(s, 15); |
| s->is_jmp = DISAS_UPDATE; |
| } |
| |
| static inline void gen_add_data_offset(DisasContext *s, unsigned int insn) |
| { |
| int val, rm, shift, shiftop; |
| |
| if (!(insn & (1 << 25))) { |
| /* immediate */ |
| val = insn & 0xfff; |
| if (!(insn & (1 << 23))) |
| val = -val; |
| if (val != 0) |
| gen_op_addl_T1_im(val); |
| } else { |
| /* shift/register */ |
| rm = (insn) & 0xf; |
| shift = (insn >> 7) & 0x1f; |
| gen_movl_T2_reg(s, rm); |
| shiftop = (insn >> 5) & 3; |
| if (shift != 0) { |
| gen_shift_T2_im[shiftop](shift); |
| } else if (shiftop != 0) { |
| gen_shift_T2_0[shiftop](); |
| } |
| if (!(insn & (1 << 23))) |
| gen_op_subl_T1_T2(); |
| else |
| gen_op_addl_T1_T2(); |
| } |
| } |
| |
| static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn, |
| int extra) |
| { |
| int val, rm; |
| |
| if (insn & (1 << 22)) { |
| /* immediate */ |
| val = (insn & 0xf) | ((insn >> 4) & 0xf0); |
| val += extra; |
| if (!(insn & (1 << 23))) |
| val = -val; |
| if (val != 0) |
| gen_op_addl_T1_im(val); |
| } else { |
| /* register */ |
| if (extra) |
| gen_op_addl_T1_im(extra); |
| rm = (insn) & 0xf; |
| gen_movl_T2_reg(s, rm); |
| if (!(insn & (1 << 23))) |
| gen_op_subl_T1_T2(); |
| else |
| gen_op_addl_T1_T2(); |
| } |
| } |
| |
| #define VFP_OP(name) \ |
| static inline void gen_vfp_##name(int dp) \ |
| { \ |
| if (dp) \ |
| gen_op_vfp_##name##d(); \ |
| else \ |
| gen_op_vfp_##name##s(); \ |
| } |
| |
| VFP_OP(add) |
| VFP_OP(sub) |
| VFP_OP(mul) |
| VFP_OP(div) |
| VFP_OP(neg) |
| VFP_OP(abs) |
| VFP_OP(sqrt) |
| VFP_OP(cmp) |
| VFP_OP(cmpe) |
| VFP_OP(F1_ld0) |
| VFP_OP(uito) |
| VFP_OP(sito) |
| VFP_OP(toui) |
| VFP_OP(touiz) |
| VFP_OP(tosi) |
| VFP_OP(tosiz) |
| |
| #undef VFP_OP |
| |
| static inline void gen_vfp_ld(DisasContext *s, int dp) |
| { |
| if (dp) |
| gen_ldst(vfp_ldd, s); |
| else |
| gen_ldst(vfp_lds, s); |
| } |
| |
| static inline void gen_vfp_st(DisasContext *s, int dp) |
| { |
| if (dp) |
| gen_ldst(vfp_std, s); |
| else |
| gen_ldst(vfp_sts, s); |
| } |
| |
| static inline long |
| vfp_reg_offset (int dp, int reg) |
| { |
| if (dp) |
| return offsetof(CPUARMState, vfp.regs[reg]); |
| else if (reg & 1) { |
| return offsetof(CPUARMState, vfp.regs[reg >> 1]) |
| + offsetof(CPU_DoubleU, l.upper); |
| } else { |
| return offsetof(CPUARMState, vfp.regs[reg >> 1]) |
| + offsetof(CPU_DoubleU, l.lower); |
| } |
| } |
| static inline void gen_mov_F0_vreg(int dp, int reg) |
| { |
| if (dp) |
| gen_op_vfp_getreg_F0d(vfp_reg_offset(dp, reg)); |
| else |
| gen_op_vfp_getreg_F0s(vfp_reg_offset(dp, reg)); |
| } |
| |
| static inline void gen_mov_F1_vreg(int dp, int reg) |
| { |
| if (dp) |
| gen_op_vfp_getreg_F1d(vfp_reg_offset(dp, reg)); |
| else |
| gen_op_vfp_getreg_F1s(vfp_reg_offset(dp, reg)); |
| } |
| |
| static inline void gen_mov_vreg_F0(int dp, int reg) |
| { |
| if (dp) |
| gen_op_vfp_setreg_F0d(vfp_reg_offset(dp, reg)); |
| else |
| gen_op_vfp_setreg_F0s(vfp_reg_offset(dp, reg)); |
| } |
| |
| /* Disassemble system coprocessor (cp15) instruction. Return nonzero if |
| instruction is not defined. */ |
| static int disas_cp15_insn(DisasContext *s, uint32_t insn) |
| { |
| uint32_t rd; |
| |
| /* ??? Some cp15 registers are accessible from userspace. */ |
| if (IS_USER(s)) { |
| return 1; |
| } |
| if ((insn & 0x0fff0fff) == 0x0e070f90 |
| || (insn & 0x0fff0fff) == 0x0e070f58) { |
| /* Wait for interrupt. */ |
| gen_op_movl_T0_im((long)s->pc); |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_wfi(); |
| s->is_jmp = DISAS_JUMP; |
| return 0; |
| } |
| rd = (insn >> 12) & 0xf; |
| if (insn & (1 << 20)) { |
| gen_op_movl_T0_cp15(insn); |
| /* If the destination register is r15 then sets condition codes. */ |
| if (rd != 15) |
| gen_movl_reg_T0(s, rd); |
| } else { |
| gen_movl_T0_reg(s, rd); |
| gen_op_movl_cp15_T0(insn); |
| } |
| gen_lookup_tb(s); |
| return 0; |
| } |
| |
| /* Disassemble a VFP instruction. Returns nonzero if an error occured |
| (ie. an undefined instruction). */ |
| static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn) |
| { |
| uint32_t rd, rn, rm, op, i, n, offset, delta_d, delta_m, bank_mask; |
| int dp, veclen; |
| |
| if (!arm_feature(env, ARM_FEATURE_VFP)) |
| return 1; |
| |
| if ((env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) == 0) { |
| /* VFP disabled. Only allow fmxr/fmrx to/from fpexc and fpsid. */ |
| if ((insn & 0x0fe00fff) != 0x0ee00a10) |
| return 1; |
| rn = (insn >> 16) & 0xf; |
| if (rn != 0 && rn != 8) |
| return 1; |
| } |
| dp = ((insn & 0xf00) == 0xb00); |
| switch ((insn >> 24) & 0xf) { |
| case 0xe: |
| if (insn & (1 << 4)) { |
| /* single register transfer */ |
| if ((insn & 0x6f) != 0x00) |
| return 1; |
| rd = (insn >> 12) & 0xf; |
| if (dp) { |
| if (insn & 0x80) |
| return 1; |
| rn = (insn >> 16) & 0xf; |
| /* Get the existing value even for arm->vfp moves because |
| we only set half the register. */ |
| gen_mov_F0_vreg(1, rn); |
| gen_op_vfp_mrrd(); |
| if (insn & (1 << 20)) { |
| /* vfp->arm */ |
| if (insn & (1 << 21)) |
| gen_movl_reg_T1(s, rd); |
| else |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* arm->vfp */ |
| if (insn & (1 << 21)) |
| gen_movl_T1_reg(s, rd); |
| else |
| gen_movl_T0_reg(s, rd); |
| gen_op_vfp_mdrr(); |
| gen_mov_vreg_F0(dp, rn); |
| } |
| } else { |
| rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
| if (insn & (1 << 20)) { |
| /* vfp->arm */ |
| if (insn & (1 << 21)) { |
| /* system register */ |
| rn >>= 1; |
| switch (rn) { |
| case ARM_VFP_FPSID: |
| case ARM_VFP_FPEXC: |
| case ARM_VFP_FPINST: |
| case ARM_VFP_FPINST2: |
| gen_op_vfp_movl_T0_xreg(rn); |
| break; |
| case ARM_VFP_FPSCR: |
| if (rd == 15) |
| gen_op_vfp_movl_T0_fpscr_flags(); |
| else |
| gen_op_vfp_movl_T0_fpscr(); |
| break; |
| default: |
| return 1; |
| } |
| } else { |
| gen_mov_F0_vreg(0, rn); |
| gen_op_vfp_mrs(); |
| } |
| if (rd == 15) { |
| /* Set the 4 flag bits in the CPSR. */ |
| gen_op_movl_cpsr_T0(0xf0000000); |
| } else |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* arm->vfp */ |
| gen_movl_T0_reg(s, rd); |
| if (insn & (1 << 21)) { |
| rn >>= 1; |
| /* system register */ |
| switch (rn) { |
| case ARM_VFP_FPSID: |
| /* Writes are ignored. */ |
| break; |
| case ARM_VFP_FPSCR: |
| gen_op_vfp_movl_fpscr_T0(); |
| gen_lookup_tb(s); |
| break; |
| case ARM_VFP_FPEXC: |
| gen_op_vfp_movl_xreg_T0(rn); |
| gen_lookup_tb(s); |
| break; |
| case ARM_VFP_FPINST: |
| case ARM_VFP_FPINST2: |
| gen_op_vfp_movl_xreg_T0(rn); |
| break; |
| default: |
| return 1; |
| } |
| } else { |
| gen_op_vfp_msr(); |
| gen_mov_vreg_F0(0, rn); |
| } |
| } |
| } |
| } else { |
| /* data processing */ |
| /* The opcode is in bits 23, 21, 20 and 6. */ |
| op = ((insn >> 20) & 8) | ((insn >> 19) & 6) | ((insn >> 6) & 1); |
| if (dp) { |
| if (op == 15) { |
| /* rn is opcode */ |
| rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
| } else { |
| /* rn is register number */ |
| if (insn & (1 << 7)) |
| return 1; |
| rn = (insn >> 16) & 0xf; |
| } |
| |
| if (op == 15 && (rn == 15 || rn > 17)) { |
| /* Integer or single precision destination. */ |
| rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
| } else { |
| if (insn & (1 << 22)) |
| return 1; |
| rd = (insn >> 12) & 0xf; |
| } |
| |
| if (op == 15 && (rn == 16 || rn == 17)) { |
| /* Integer source. */ |
| rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
| } else { |
| if (insn & (1 << 5)) |
| return 1; |
| rm = insn & 0xf; |
| } |
| } else { |
| rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1); |
| if (op == 15 && rn == 15) { |
| /* Double precision destination. */ |
| if (insn & (1 << 22)) |
| return 1; |
| rd = (insn >> 12) & 0xf; |
| } else |
| rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
| rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
| } |
| |
| veclen = env->vfp.vec_len; |
| if (op == 15 && rn > 3) |
| veclen = 0; |
| |
| /* Shut up compiler warnings. */ |
| delta_m = 0; |
| delta_d = 0; |
| bank_mask = 0; |
| |
| if (veclen > 0) { |
| if (dp) |
| bank_mask = 0xc; |
| else |
| bank_mask = 0x18; |
| |
| /* Figure out what type of vector operation this is. */ |
| if ((rd & bank_mask) == 0) { |
| /* scalar */ |
| veclen = 0; |
| } else { |
| if (dp) |
| delta_d = (env->vfp.vec_stride >> 1) + 1; |
| else |
| delta_d = env->vfp.vec_stride + 1; |
| |
| if ((rm & bank_mask) == 0) { |
| /* mixed scalar/vector */ |
| delta_m = 0; |
| } else { |
| /* vector */ |
| delta_m = delta_d; |
| } |
| } |
| } |
| |
| /* Load the initial operands. */ |
| if (op == 15) { |
| switch (rn) { |
| case 16: |
| case 17: |
| /* Integer source */ |
| gen_mov_F0_vreg(0, rm); |
| break; |
| case 8: |
| case 9: |
| /* Compare */ |
| gen_mov_F0_vreg(dp, rd); |
| gen_mov_F1_vreg(dp, rm); |
| break; |
| case 10: |
| case 11: |
| /* Compare with zero */ |
| gen_mov_F0_vreg(dp, rd); |
| gen_vfp_F1_ld0(dp); |
| break; |
| default: |
| /* One source operand. */ |
| gen_mov_F0_vreg(dp, rm); |
| } |
| } else { |
| /* Two source operands. */ |
| gen_mov_F0_vreg(dp, rn); |
| gen_mov_F1_vreg(dp, rm); |
| } |
| |
| for (;;) { |
| /* Perform the calculation. */ |
| switch (op) { |
| case 0: /* mac: fd + (fn * fm) */ |
| gen_vfp_mul(dp); |
| gen_mov_F1_vreg(dp, rd); |
| gen_vfp_add(dp); |
| break; |
| case 1: /* nmac: fd - (fn * fm) */ |
| gen_vfp_mul(dp); |
| gen_vfp_neg(dp); |
| gen_mov_F1_vreg(dp, rd); |
| gen_vfp_add(dp); |
| break; |
| case 2: /* msc: -fd + (fn * fm) */ |
| gen_vfp_mul(dp); |
| gen_mov_F1_vreg(dp, rd); |
| gen_vfp_sub(dp); |
| break; |
| case 3: /* nmsc: -fd - (fn * fm) */ |
| gen_vfp_mul(dp); |
| gen_mov_F1_vreg(dp, rd); |
| gen_vfp_add(dp); |
| gen_vfp_neg(dp); |
| break; |
| case 4: /* mul: fn * fm */ |
| gen_vfp_mul(dp); |
| break; |
| case 5: /* nmul: -(fn * fm) */ |
| gen_vfp_mul(dp); |
| gen_vfp_neg(dp); |
| break; |
| case 6: /* add: fn + fm */ |
| gen_vfp_add(dp); |
| break; |
| case 7: /* sub: fn - fm */ |
| gen_vfp_sub(dp); |
| break; |
| case 8: /* div: fn / fm */ |
| gen_vfp_div(dp); |
| break; |
| case 15: /* extension space */ |
| switch (rn) { |
| case 0: /* cpy */ |
| /* no-op */ |
| break; |
| case 1: /* abs */ |
| gen_vfp_abs(dp); |
| break; |
| case 2: /* neg */ |
| gen_vfp_neg(dp); |
| break; |
| case 3: /* sqrt */ |
| gen_vfp_sqrt(dp); |
| break; |
| case 8: /* cmp */ |
| gen_vfp_cmp(dp); |
| break; |
| case 9: /* cmpe */ |
| gen_vfp_cmpe(dp); |
| break; |
| case 10: /* cmpz */ |
| gen_vfp_cmp(dp); |
| break; |
| case 11: /* cmpez */ |
| gen_vfp_F1_ld0(dp); |
| gen_vfp_cmpe(dp); |
| break; |
| case 15: /* single<->double conversion */ |
| if (dp) |
| gen_op_vfp_fcvtsd(); |
| else |
| gen_op_vfp_fcvtds(); |
| break; |
| case 16: /* fuito */ |
| gen_vfp_uito(dp); |
| break; |
| case 17: /* fsito */ |
| gen_vfp_sito(dp); |
| break; |
| case 24: /* ftoui */ |
| gen_vfp_toui(dp); |
| break; |
| case 25: /* ftouiz */ |
| gen_vfp_touiz(dp); |
| break; |
| case 26: /* ftosi */ |
| gen_vfp_tosi(dp); |
| break; |
| case 27: /* ftosiz */ |
| gen_vfp_tosiz(dp); |
| break; |
| default: /* undefined */ |
| printf ("rn:%d\n", rn); |
| return 1; |
| } |
| break; |
| default: /* undefined */ |
| printf ("op:%d\n", op); |
| return 1; |
| } |
| |
| /* Write back the result. */ |
| if (op == 15 && (rn >= 8 && rn <= 11)) |
| ; /* Comparison, do nothing. */ |
| else if (op == 15 && rn > 17) |
| /* Integer result. */ |
| gen_mov_vreg_F0(0, rd); |
| else if (op == 15 && rn == 15) |
| /* conversion */ |
| gen_mov_vreg_F0(!dp, rd); |
| else |
| gen_mov_vreg_F0(dp, rd); |
| |
| /* break out of the loop if we have finished */ |
| if (veclen == 0) |
| break; |
| |
| if (op == 15 && delta_m == 0) { |
| /* single source one-many */ |
| while (veclen--) { |
| rd = ((rd + delta_d) & (bank_mask - 1)) |
| | (rd & bank_mask); |
| gen_mov_vreg_F0(dp, rd); |
| } |
| break; |
| } |
| /* Setup the next operands. */ |
| veclen--; |
| rd = ((rd + delta_d) & (bank_mask - 1)) |
| | (rd & bank_mask); |
| |
| if (op == 15) { |
| /* One source operand. */ |
| rm = ((rm + delta_m) & (bank_mask - 1)) |
| | (rm & bank_mask); |
| gen_mov_F0_vreg(dp, rm); |
| } else { |
| /* Two source operands. */ |
| rn = ((rn + delta_d) & (bank_mask - 1)) |
| | (rn & bank_mask); |
| gen_mov_F0_vreg(dp, rn); |
| if (delta_m) { |
| rm = ((rm + delta_m) & (bank_mask - 1)) |
| | (rm & bank_mask); |
| gen_mov_F1_vreg(dp, rm); |
| } |
| } |
| } |
| } |
| break; |
| case 0xc: |
| case 0xd: |
| if (dp && (insn & (1 << 22))) { |
| /* two-register transfer */ |
| rn = (insn >> 16) & 0xf; |
| rd = (insn >> 12) & 0xf; |
| if (dp) { |
| if (insn & (1 << 5)) |
| return 1; |
| rm = insn & 0xf; |
| } else |
| rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1); |
| |
| if (insn & (1 << 20)) { |
| /* vfp->arm */ |
| if (dp) { |
| gen_mov_F0_vreg(1, rm); |
| gen_op_vfp_mrrd(); |
| gen_movl_reg_T0(s, rd); |
| gen_movl_reg_T1(s, rn); |
| } else { |
| gen_mov_F0_vreg(0, rm); |
| gen_op_vfp_mrs(); |
| gen_movl_reg_T0(s, rn); |
| gen_mov_F0_vreg(0, rm + 1); |
| gen_op_vfp_mrs(); |
| gen_movl_reg_T0(s, rd); |
| } |
| } else { |
| /* arm->vfp */ |
| if (dp) { |
| gen_movl_T0_reg(s, rd); |
| gen_movl_T1_reg(s, rn); |
| gen_op_vfp_mdrr(); |
| gen_mov_vreg_F0(1, rm); |
| } else { |
| gen_movl_T0_reg(s, rn); |
| gen_op_vfp_msr(); |
| gen_mov_vreg_F0(0, rm); |
| gen_movl_T0_reg(s, rd); |
| gen_op_vfp_msr(); |
| gen_mov_vreg_F0(0, rm + 1); |
| } |
| } |
| } else { |
| /* Load/store */ |
| rn = (insn >> 16) & 0xf; |
| if (dp) |
| rd = (insn >> 12) & 0xf; |
| else |
| rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1); |
| gen_movl_T1_reg(s, rn); |
| if ((insn & 0x01200000) == 0x01000000) { |
| /* Single load/store */ |
| offset = (insn & 0xff) << 2; |
| if ((insn & (1 << 23)) == 0) |
| offset = -offset; |
| gen_op_addl_T1_im(offset); |
| if (insn & (1 << 20)) { |
| gen_vfp_ld(s, dp); |
| gen_mov_vreg_F0(dp, rd); |
| } else { |
| gen_mov_F0_vreg(dp, rd); |
| gen_vfp_st(s, dp); |
| } |
| } else { |
| /* load/store multiple */ |
| if (dp) |
| n = (insn >> 1) & 0x7f; |
| else |
| n = insn & 0xff; |
| |
| if (insn & (1 << 24)) /* pre-decrement */ |
| gen_op_addl_T1_im(-((insn & 0xff) << 2)); |
| |
| if (dp) |
| offset = 8; |
| else |
| offset = 4; |
| for (i = 0; i < n; i++) { |
| if (insn & (1 << 20)) { |
| /* load */ |
| gen_vfp_ld(s, dp); |
| gen_mov_vreg_F0(dp, rd + i); |
| } else { |
| /* store */ |
| gen_mov_F0_vreg(dp, rd + i); |
| gen_vfp_st(s, dp); |
| } |
| gen_op_addl_T1_im(offset); |
| } |
| if (insn & (1 << 21)) { |
| /* writeback */ |
| if (insn & (1 << 24)) |
| offset = -offset * n; |
| else if (dp && (insn & 1)) |
| offset = 4; |
| else |
| offset = 0; |
| |
| if (offset != 0) |
| gen_op_addl_T1_im(offset); |
| gen_movl_reg_T1(s, rn); |
| } |
| } |
| } |
| break; |
| default: |
| /* Should never happen. */ |
| return 1; |
| } |
| return 0; |
| } |
| |
| static inline void gen_goto_tb(DisasContext *s, int n, uint32_t dest) |
| { |
| TranslationBlock *tb; |
| |
| tb = s->tb; |
| if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { |
| if (n == 0) |
| gen_op_goto_tb0(TBPARAM(tb)); |
| else |
| gen_op_goto_tb1(TBPARAM(tb)); |
| gen_op_movl_T0_im(dest); |
| gen_op_movl_r15_T0(); |
| gen_op_movl_T0_im((long)tb + n); |
| gen_op_exit_tb(); |
| } else { |
| gen_op_movl_T0_im(dest); |
| gen_op_movl_r15_T0(); |
| gen_op_movl_T0_0(); |
| gen_op_exit_tb(); |
| } |
| } |
| |
| static inline void gen_jmp (DisasContext *s, uint32_t dest) |
| { |
| if (__builtin_expect(s->singlestep_enabled, 0)) { |
| /* An indirect jump so that we still trigger the debug exception. */ |
| if (s->thumb) |
| dest |= 1; |
| gen_op_movl_T0_im(dest); |
| gen_bx(s); |
| } else { |
| gen_goto_tb(s, 0, dest); |
| s->is_jmp = DISAS_TB_JUMP; |
| } |
| } |
| |
| static inline void gen_mulxy(int x, int y) |
| { |
| if (x) |
| gen_op_sarl_T0_im(16); |
| else |
| gen_op_sxth_T0(); |
| if (y) |
| gen_op_sarl_T1_im(16); |
| else |
| gen_op_sxth_T1(); |
| gen_op_mul_T0_T1(); |
| } |
| |
| /* Return the mask of PSR bits set by a MSR instruction. */ |
| static uint32_t msr_mask(DisasContext *s, int flags, int spsr) { |
| uint32_t mask; |
| |
| mask = 0; |
| if (flags & (1 << 0)) |
| mask |= 0xff; |
| if (flags & (1 << 1)) |
| mask |= 0xff00; |
| if (flags & (1 << 2)) |
| mask |= 0xff0000; |
| if (flags & (1 << 3)) |
| mask |= 0xff000000; |
| /* Mask out undefined bits. */ |
| mask &= 0xf90f03ff; |
| /* Mask out state bits. */ |
| if (!spsr) |
| mask &= ~0x01000020; |
| /* Mask out privileged bits. */ |
| if (IS_USER(s)) |
| mask &= 0xf80f0200; |
| return mask; |
| } |
| |
| /* Returns nonzero if access to the PSR is not permitted. */ |
| static int gen_set_psr_T0(DisasContext *s, uint32_t mask, int spsr) |
| { |
| if (spsr) { |
| /* ??? This is also undefined in system mode. */ |
| if (IS_USER(s)) |
| return 1; |
| gen_op_movl_spsr_T0(mask); |
| } else { |
| gen_op_movl_cpsr_T0(mask); |
| } |
| gen_lookup_tb(s); |
| return 0; |
| } |
| |
| static void gen_exception_return(DisasContext *s) |
| { |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_movl_T0_spsr(); |
| gen_op_movl_cpsr_T0(0xffffffff); |
| s->is_jmp = DISAS_UPDATE; |
| } |
| |
| static void disas_arm_insn(CPUState * env, DisasContext *s) |
| { |
| unsigned int cond, insn, val, op1, i, shift, rm, rs, rn, rd, sh; |
| |
| insn = ldl_code(s->pc); |
| s->pc += 4; |
| |
| cond = insn >> 28; |
| if (cond == 0xf){ |
| /* Unconditional instructions. */ |
| if ((insn & 0x0d70f000) == 0x0550f000) |
| return; /* PLD */ |
| else if ((insn & 0x0e000000) == 0x0a000000) { |
| /* branch link and change to thumb (blx <offset>) */ |
| int32_t offset; |
| |
| val = (uint32_t)s->pc; |
| gen_op_movl_T0_im(val); |
| gen_movl_reg_T0(s, 14); |
| /* Sign-extend the 24-bit offset */ |
| offset = (((int32_t)insn) << 8) >> 8; |
| /* offset * 4 + bit24 * 2 + (thumb bit) */ |
| val += (offset << 2) | ((insn >> 23) & 2) | 1; |
| /* pipeline offset */ |
| val += 4; |
| gen_op_movl_T0_im(val); |
| gen_bx(s); |
| return; |
| } else if ((insn & 0x0fe00000) == 0x0c400000) { |
| /* Coprocessor double register transfer. */ |
| } else if ((insn & 0x0f000010) == 0x0e000010) { |
| /* Additional coprocessor register transfer. */ |
| } else if ((insn & 0x0ff10010) == 0x01000000) { |
| /* cps (privileged) */ |
| } else if ((insn & 0x0ffffdff) == 0x01010000) { |
| /* setend */ |
| if (insn & (1 << 9)) { |
| /* BE8 mode not implemented. */ |
| goto illegal_op; |
| } |
| return; |
| } |
| goto illegal_op; |
| } |
| if (cond != 0xe) { |
| /* if not always execute, we generate a conditional jump to |
| next instruction */ |
| s->condlabel = gen_new_label(); |
| gen_test_cc[cond ^ 1](s->condlabel); |
| s->condjmp = 1; |
| //gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc); |
| //s->is_jmp = DISAS_JUMP_NEXT; |
| } |
| if ((insn & 0x0f900000) == 0x03000000) { |
| if ((insn & 0x0fb0f000) != 0x0320f000) |
| goto illegal_op; |
| /* CPSR = immediate */ |
| val = insn & 0xff; |
| shift = ((insn >> 8) & 0xf) * 2; |
| if (shift) |
| val = (val >> shift) | (val << (32 - shift)); |
| gen_op_movl_T0_im(val); |
| i = ((insn & (1 << 22)) != 0); |
| if (gen_set_psr_T0(s, msr_mask(s, (insn >> 16) & 0xf, i), i)) |
| goto illegal_op; |
| } else if ((insn & 0x0f900000) == 0x01000000 |
| && (insn & 0x00000090) != 0x00000090) { |
| /* miscellaneous instructions */ |
| op1 = (insn >> 21) & 3; |
| sh = (insn >> 4) & 0xf; |
| rm = insn & 0xf; |
| switch (sh) { |
| case 0x0: /* move program status register */ |
| if (op1 & 1) { |
| /* PSR = reg */ |
| gen_movl_T0_reg(s, rm); |
| i = ((op1 & 2) != 0); |
| if (gen_set_psr_T0(s, msr_mask(s, (insn >> 16) & 0xf, i), i)) |
| goto illegal_op; |
| } else { |
| /* reg = PSR */ |
| rd = (insn >> 12) & 0xf; |
| if (op1 & 2) { |
| if (IS_USER(s)) |
| goto illegal_op; |
| gen_op_movl_T0_spsr(); |
| } else { |
| gen_op_movl_T0_cpsr(); |
| } |
| gen_movl_reg_T0(s, rd); |
| } |
| break; |
| case 0x1: |
| if (op1 == 1) { |
| /* branch/exchange thumb (bx). */ |
| gen_movl_T0_reg(s, rm); |
| gen_bx(s); |
| } else if (op1 == 3) { |
| /* clz */ |
| rd = (insn >> 12) & 0xf; |
| gen_movl_T0_reg(s, rm); |
| gen_op_clz_T0(); |
| gen_movl_reg_T0(s, rd); |
| } else { |
| goto illegal_op; |
| } |
| break; |
| case 0x2: |
| if (op1 == 1) { |
| ARCH(5J); /* bxj */ |
| /* Trivial implementation equivalent to bx. */ |
| gen_movl_T0_reg(s, rm); |
| gen_bx(s); |
| } else { |
| goto illegal_op; |
| } |
| break; |
| case 0x3: |
| if (op1 != 1) |
| goto illegal_op; |
| |
| /* branch link/exchange thumb (blx) */ |
| val = (uint32_t)s->pc; |
| gen_op_movl_T0_im(val); |
| gen_movl_reg_T0(s, 14); |
| gen_movl_T0_reg(s, rm); |
| gen_bx(s); |
| break; |
| case 0x5: /* saturating add/subtract */ |
| rd = (insn >> 12) & 0xf; |
| rn = (insn >> 16) & 0xf; |
| gen_movl_T0_reg(s, rm); |
| gen_movl_T1_reg(s, rn); |
| if (op1 & 2) |
| gen_op_double_T1_saturate(); |
| if (op1 & 1) |
| gen_op_subl_T0_T1_saturate(); |
| else |
| gen_op_addl_T0_T1_saturate(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 7: /* bkpt */ |
| gen_op_movl_T0_im((long)s->pc - 4); |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_bkpt(); |
| s->is_jmp = DISAS_JUMP; |
| break; |
| case 0x8: /* signed multiply */ |
| case 0xa: |
| case 0xc: |
| case 0xe: |
| rs = (insn >> 8) & 0xf; |
| rn = (insn >> 12) & 0xf; |
| rd = (insn >> 16) & 0xf; |
| if (op1 == 1) { |
| /* (32 * 16) >> 16 */ |
| gen_movl_T0_reg(s, rm); |
| gen_movl_T1_reg(s, rs); |
| if (sh & 4) |
| gen_op_sarl_T1_im(16); |
| else |
| gen_op_sxth_T1(); |
| gen_op_imulw_T0_T1(); |
| if ((sh & 2) == 0) { |
| gen_movl_T1_reg(s, rn); |
| gen_op_addl_T0_T1_setq(); |
| } |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* 16 * 16 */ |
| gen_movl_T0_reg(s, rm); |
| gen_movl_T1_reg(s, rs); |
| gen_mulxy(sh & 2, sh & 4); |
| if (op1 == 2) { |
| gen_op_signbit_T1_T0(); |
| gen_op_addq_T0_T1(rn, rd); |
| gen_movl_reg_T0(s, rn); |
| gen_movl_reg_T1(s, rd); |
| } else { |
| if (op1 == 0) { |
| gen_movl_T1_reg(s, rn); |
| gen_op_addl_T0_T1_setq(); |
| } |
| gen_movl_reg_T0(s, rd); |
| } |
| } |
| break; |
| default: |
| goto illegal_op; |
| } |
| } else if (((insn & 0x0e000000) == 0 && |
| (insn & 0x00000090) != 0x90) || |
| ((insn & 0x0e000000) == (1 << 25))) { |
| int set_cc, logic_cc, shiftop; |
| |
| op1 = (insn >> 21) & 0xf; |
| set_cc = (insn >> 20) & 1; |
| logic_cc = table_logic_cc[op1] & set_cc; |
| |
| /* data processing instruction */ |
| if (insn & (1 << 25)) { |
| /* immediate operand */ |
| val = insn & 0xff; |
| shift = ((insn >> 8) & 0xf) * 2; |
| if (shift) |
| val = (val >> shift) | (val << (32 - shift)); |
| gen_op_movl_T1_im(val); |
| if (logic_cc && shift) |
| gen_op_mov_CF_T1(); |
| } else { |
| /* register */ |
| rm = (insn) & 0xf; |
| gen_movl_T1_reg(s, rm); |
| shiftop = (insn >> 5) & 3; |
| if (!(insn & (1 << 4))) { |
| shift = (insn >> 7) & 0x1f; |
| if (shift != 0) { |
| if (logic_cc) { |
| gen_shift_T1_im_cc[shiftop](shift); |
| } else { |
| gen_shift_T1_im[shiftop](shift); |
| } |
| } else if (shiftop != 0) { |
| if (logic_cc) { |
| gen_shift_T1_0_cc[shiftop](); |
| } else { |
| gen_shift_T1_0[shiftop](); |
| } |
| } |
| } else { |
| rs = (insn >> 8) & 0xf; |
| gen_movl_T0_reg(s, rs); |
| if (logic_cc) { |
| gen_shift_T1_T0_cc[shiftop](); |
| } else { |
| gen_shift_T1_T0[shiftop](); |
| } |
| } |
| } |
| if (op1 != 0x0f && op1 != 0x0d) { |
| rn = (insn >> 16) & 0xf; |
| gen_movl_T0_reg(s, rn); |
| } |
| rd = (insn >> 12) & 0xf; |
| switch(op1) { |
| case 0x00: |
| gen_op_andl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| if (logic_cc) |
| gen_op_logic_T0_cc(); |
| break; |
| case 0x01: |
| gen_op_xorl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| if (logic_cc) |
| gen_op_logic_T0_cc(); |
| break; |
| case 0x02: |
| if (set_cc && rd == 15) { |
| /* SUBS r15, ... is used for exception return. */ |
| if (IS_USER(s)) |
| goto illegal_op; |
| gen_op_subl_T0_T1_cc(); |
| gen_exception_return(s); |
| } else { |
| if (set_cc) |
| gen_op_subl_T0_T1_cc(); |
| else |
| gen_op_subl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| } |
| break; |
| case 0x03: |
| if (set_cc) |
| gen_op_rsbl_T0_T1_cc(); |
| else |
| gen_op_rsbl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 0x04: |
| if (set_cc) |
| gen_op_addl_T0_T1_cc(); |
| else |
| gen_op_addl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 0x05: |
| if (set_cc) |
| gen_op_adcl_T0_T1_cc(); |
| else |
| gen_op_adcl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 0x06: |
| if (set_cc) |
| gen_op_sbcl_T0_T1_cc(); |
| else |
| gen_op_sbcl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 0x07: |
| if (set_cc) |
| gen_op_rscl_T0_T1_cc(); |
| else |
| gen_op_rscl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 0x08: |
| if (set_cc) { |
| gen_op_andl_T0_T1(); |
| gen_op_logic_T0_cc(); |
| } |
| break; |
| case 0x09: |
| if (set_cc) { |
| gen_op_xorl_T0_T1(); |
| gen_op_logic_T0_cc(); |
| } |
| break; |
| case 0x0a: |
| if (set_cc) { |
| gen_op_subl_T0_T1_cc(); |
| } |
| break; |
| case 0x0b: |
| if (set_cc) { |
| gen_op_addl_T0_T1_cc(); |
| } |
| break; |
| case 0x0c: |
| gen_op_orl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| if (logic_cc) |
| gen_op_logic_T0_cc(); |
| break; |
| case 0x0d: |
| if (logic_cc && rd == 15) { |
| /* MOVS r15, ... is used for exception return. */ |
| if (IS_USER(s)) |
| goto illegal_op; |
| gen_op_movl_T0_T1(); |
| gen_exception_return(s); |
| } else { |
| gen_movl_reg_T1(s, rd); |
| if (logic_cc) |
| gen_op_logic_T1_cc(); |
| } |
| break; |
| case 0x0e: |
| gen_op_bicl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| if (logic_cc) |
| gen_op_logic_T0_cc(); |
| break; |
| default: |
| case 0x0f: |
| gen_op_notl_T1(); |
| gen_movl_reg_T1(s, rd); |
| if (logic_cc) |
| gen_op_logic_T1_cc(); |
| break; |
| } |
| } else { |
| /* other instructions */ |
| op1 = (insn >> 24) & 0xf; |
| switch(op1) { |
| case 0x0: |
| case 0x1: |
| /* multiplies, extra load/stores */ |
| sh = (insn >> 5) & 3; |
| if (sh == 0) { |
| if (op1 == 0x0) { |
| rd = (insn >> 16) & 0xf; |
| rn = (insn >> 12) & 0xf; |
| rs = (insn >> 8) & 0xf; |
| rm = (insn) & 0xf; |
| if (((insn >> 22) & 3) == 0) { |
| /* 32 bit mul */ |
| gen_movl_T0_reg(s, rs); |
| gen_movl_T1_reg(s, rm); |
| gen_op_mul_T0_T1(); |
| if (insn & (1 << 21)) { |
| gen_movl_T1_reg(s, rn); |
| gen_op_addl_T0_T1(); |
| } |
| if (insn & (1 << 20)) |
| gen_op_logic_T0_cc(); |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* 64 bit mul */ |
| gen_movl_T0_reg(s, rs); |
| gen_movl_T1_reg(s, rm); |
| if (insn & (1 << 22)) |
| gen_op_imull_T0_T1(); |
| else |
| gen_op_mull_T0_T1(); |
| if (insn & (1 << 21)) /* mult accumulate */ |
| gen_op_addq_T0_T1(rn, rd); |
| if (!(insn & (1 << 23))) { /* double accumulate */ |
| ARCH(6); |
| gen_op_addq_lo_T0_T1(rn); |
| gen_op_addq_lo_T0_T1(rd); |
| } |
| if (insn & (1 << 20)) |
| gen_op_logicq_cc(); |
| gen_movl_reg_T0(s, rn); |
| gen_movl_reg_T1(s, rd); |
| } |
| } else { |
| rn = (insn >> 16) & 0xf; |
| rd = (insn >> 12) & 0xf; |
| if (insn & (1 << 23)) { |
| /* load/store exclusive */ |
| goto illegal_op; |
| } else { |
| /* SWP instruction */ |
| rm = (insn) & 0xf; |
| |
| gen_movl_T0_reg(s, rm); |
| gen_movl_T1_reg(s, rn); |
| if (insn & (1 << 22)) { |
| gen_ldst(swpb, s); |
| } else { |
| gen_ldst(swpl, s); |
| } |
| gen_movl_reg_T0(s, rd); |
| } |
| } |
| } else { |
| int address_offset; |
| /* Misc load/store */ |
| rn = (insn >> 16) & 0xf; |
| rd = (insn >> 12) & 0xf; |
| gen_movl_T1_reg(s, rn); |
| if (insn & (1 << 24)) |
| gen_add_datah_offset(s, insn, 0); |
| address_offset = 0; |
| if (insn & (1 << 20)) { |
| /* load */ |
| switch(sh) { |
| case 1: |
| gen_ldst(lduw, s); |
| break; |
| case 2: |
| gen_ldst(ldsb, s); |
| break; |
| default: |
| case 3: |
| gen_ldst(ldsw, s); |
| break; |
| } |
| gen_movl_reg_T0(s, rd); |
| } else if (sh & 2) { |
| /* doubleword */ |
| if (sh & 1) { |
| /* store */ |
| gen_movl_T0_reg(s, rd); |
| gen_ldst(stl, s); |
| gen_op_addl_T1_im(4); |
| gen_movl_T0_reg(s, rd + 1); |
| gen_ldst(stl, s); |
| } else { |
| /* load */ |
| gen_ldst(ldl, s); |
| gen_movl_reg_T0(s, rd); |
| gen_op_addl_T1_im(4); |
| gen_ldst(ldl, s); |
| gen_movl_reg_T0(s, rd + 1); |
| } |
| address_offset = -4; |
| } else { |
| /* store */ |
| gen_movl_T0_reg(s, rd); |
| gen_ldst(stw, s); |
| } |
| if (!(insn & (1 << 24))) { |
| gen_add_datah_offset(s, insn, address_offset); |
| gen_movl_reg_T1(s, rn); |
| } else if (insn & (1 << 21)) { |
| if (address_offset) |
| gen_op_addl_T1_im(address_offset); |
| gen_movl_reg_T1(s, rn); |
| } |
| } |
| break; |
| case 0x4: |
| case 0x5: |
| case 0x6: |
| case 0x7: |
| /* Check for undefined extension instructions |
| * per the ARM Bible IE: |
| * xxxx 0111 1111 xxxx xxxx xxxx 1111 xxxx |
| */ |
| sh = (0xf << 20) | (0xf << 4); |
| if (op1 == 0x7 && ((insn & sh) == sh)) |
| { |
| goto illegal_op; |
| } |
| /* load/store byte/word */ |
| rn = (insn >> 16) & 0xf; |
| rd = (insn >> 12) & 0xf; |
| gen_movl_T1_reg(s, rn); |
| i = (IS_USER(s) || (insn & 0x01200000) == 0x00200000); |
| if (insn & (1 << 24)) |
| gen_add_data_offset(s, insn); |
| if (insn & (1 << 20)) { |
| /* load */ |
| #if defined(CONFIG_USER_ONLY) |
| if (insn & (1 << 22)) |
| gen_op_ldub_raw(); |
| else |
| gen_op_ldl_raw(); |
| #else |
| if (insn & (1 << 22)) { |
| if (i) |
| gen_op_ldub_user(); |
| else |
| gen_op_ldub_kernel(); |
| } else { |
| if (i) |
| gen_op_ldl_user(); |
| else |
| gen_op_ldl_kernel(); |
| } |
| #endif |
| if (rd == 15) |
| gen_bx(s); |
| else |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* store */ |
| gen_movl_T0_reg(s, rd); |
| #if defined(CONFIG_USER_ONLY) |
| if (insn & (1 << 22)) |
| gen_op_stb_raw(); |
| else |
| gen_op_stl_raw(); |
| #else |
| if (insn & (1 << 22)) { |
| if (i) |
| gen_op_stb_user(); |
| else |
| gen_op_stb_kernel(); |
| } else { |
| if (i) |
| gen_op_stl_user(); |
| else |
| gen_op_stl_kernel(); |
| } |
| #endif |
| } |
| if (!(insn & (1 << 24))) { |
| gen_add_data_offset(s, insn); |
| gen_movl_reg_T1(s, rn); |
| } else if (insn & (1 << 21)) |
| gen_movl_reg_T1(s, rn); { |
| } |
| break; |
| case 0x08: |
| case 0x09: |
| { |
| int j, n, user, loaded_base; |
| /* load/store multiple words */ |
| /* XXX: store correct base if write back */ |
| user = 0; |
| if (insn & (1 << 22)) { |
| if (IS_USER(s)) |
| goto illegal_op; /* only usable in supervisor mode */ |
| |
| if ((insn & (1 << 15)) == 0) |
| user = 1; |
| } |
| rn = (insn >> 16) & 0xf; |
| gen_movl_T1_reg(s, rn); |
| |
| /* compute total size */ |
| loaded_base = 0; |
| n = 0; |
| for(i=0;i<16;i++) { |
| if (insn & (1 << i)) |
| n++; |
| } |
| /* XXX: test invalid n == 0 case ? */ |
| if (insn & (1 << 23)) { |
| if (insn & (1 << 24)) { |
| /* pre increment */ |
| gen_op_addl_T1_im(4); |
| } else { |
| /* post increment */ |
| } |
| } else { |
| if (insn & (1 << 24)) { |
| /* pre decrement */ |
| gen_op_addl_T1_im(-(n * 4)); |
| } else { |
| /* post decrement */ |
| if (n != 1) |
| gen_op_addl_T1_im(-((n - 1) * 4)); |
| } |
| } |
| j = 0; |
| for(i=0;i<16;i++) { |
| if (insn & (1 << i)) { |
| if (insn & (1 << 20)) { |
| /* load */ |
| gen_ldst(ldl, s); |
| if (i == 15) { |
| gen_bx(s); |
| } else if (user) { |
| gen_op_movl_user_T0(i); |
| } else if (i == rn) { |
| gen_op_movl_T2_T0(); |
| loaded_base = 1; |
| } else { |
| gen_movl_reg_T0(s, i); |
| } |
| } else { |
| /* store */ |
| if (i == 15) { |
| /* special case: r15 = PC + 12 */ |
| val = (long)s->pc + 8; |
| gen_op_movl_TN_im[0](val); |
| } else if (user) { |
| gen_op_movl_T0_user(i); |
| } else { |
| gen_movl_T0_reg(s, i); |
| } |
| gen_ldst(stl, s); |
| } |
| j++; |
| /* no need to add after the last transfer */ |
| if (j != n) |
| gen_op_addl_T1_im(4); |
| } |
| } |
| if (insn & (1 << 21)) { |
| /* write back */ |
| if (insn & (1 << 23)) { |
| if (insn & (1 << 24)) { |
| /* pre increment */ |
| } else { |
| /* post increment */ |
| gen_op_addl_T1_im(4); |
| } |
| } else { |
| if (insn & (1 << 24)) { |
| /* pre decrement */ |
| if (n != 1) |
| gen_op_addl_T1_im(-((n - 1) * 4)); |
| } else { |
| /* post decrement */ |
| gen_op_addl_T1_im(-(n * 4)); |
| } |
| } |
| gen_movl_reg_T1(s, rn); |
| } |
| if (loaded_base) { |
| gen_op_movl_T0_T2(); |
| gen_movl_reg_T0(s, rn); |
| } |
| if ((insn & (1 << 22)) && !user) { |
| /* Restore CPSR from SPSR. */ |
| gen_op_movl_T0_spsr(); |
| gen_op_movl_cpsr_T0(0xffffffff); |
| s->is_jmp = DISAS_UPDATE; |
| } |
| } |
| break; |
| case 0xa: |
| case 0xb: |
| { |
| int32_t offset; |
| |
| /* branch (and link) */ |
| val = (int32_t)s->pc; |
| if (insn & (1 << 24)) { |
| gen_op_movl_T0_im(val); |
| gen_op_movl_reg_TN[0][14](); |
| } |
| offset = (((int32_t)insn << 8) >> 8); |
| val += (offset << 2) + 4; |
| gen_jmp(s, val); |
| } |
| break; |
| case 0xc: |
| case 0xd: |
| case 0xe: |
| /* Coprocessor. */ |
| op1 = (insn >> 8) & 0xf; |
| switch (op1) { |
| case 10: |
| case 11: |
| if (disas_vfp_insn (env, s, insn)) |
| goto illegal_op; |
| break; |
| case 15: |
| if (disas_cp15_insn (s, insn)) |
| goto illegal_op; |
| break; |
| default: |
| /* unknown coprocessor. */ |
| goto illegal_op; |
| } |
| break; |
| case 0xf: |
| /* swi */ |
| gen_op_movl_T0_im((long)s->pc); |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_swi(); |
| s->is_jmp = DISAS_JUMP; |
| break; |
| default: |
| illegal_op: |
| gen_op_movl_T0_im((long)s->pc - 4); |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_undef_insn(); |
| s->is_jmp = DISAS_JUMP; |
| break; |
| } |
| } |
| } |
| |
| static void disas_thumb_insn(DisasContext *s) |
| { |
| uint32_t val, insn, op, rm, rn, rd, shift, cond; |
| int32_t offset; |
| int i; |
| |
| insn = lduw_code(s->pc); |
| s->pc += 2; |
| |
| switch (insn >> 12) { |
| case 0: case 1: |
| rd = insn & 7; |
| op = (insn >> 11) & 3; |
| if (op == 3) { |
| /* add/subtract */ |
| rn = (insn >> 3) & 7; |
| gen_movl_T0_reg(s, rn); |
| if (insn & (1 << 10)) { |
| /* immediate */ |
| gen_op_movl_T1_im((insn >> 6) & 7); |
| } else { |
| /* reg */ |
| rm = (insn >> 6) & 7; |
| gen_movl_T1_reg(s, rm); |
| } |
| if (insn & (1 << 9)) |
| gen_op_subl_T0_T1_cc(); |
| else |
| gen_op_addl_T0_T1_cc(); |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* shift immediate */ |
| rm = (insn >> 3) & 7; |
| shift = (insn >> 6) & 0x1f; |
| gen_movl_T0_reg(s, rm); |
| gen_shift_T0_im_thumb[op](shift); |
| gen_movl_reg_T0(s, rd); |
| } |
| break; |
| case 2: case 3: |
| /* arithmetic large immediate */ |
| op = (insn >> 11) & 3; |
| rd = (insn >> 8) & 0x7; |
| if (op == 0) { |
| gen_op_movl_T0_im(insn & 0xff); |
| } else { |
| gen_movl_T0_reg(s, rd); |
| gen_op_movl_T1_im(insn & 0xff); |
| } |
| switch (op) { |
| case 0: /* mov */ |
| gen_op_logic_T0_cc(); |
| break; |
| case 1: /* cmp */ |
| gen_op_subl_T0_T1_cc(); |
| break; |
| case 2: /* add */ |
| gen_op_addl_T0_T1_cc(); |
| break; |
| case 3: /* sub */ |
| gen_op_subl_T0_T1_cc(); |
| break; |
| } |
| if (op != 1) |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 4: |
| if (insn & (1 << 11)) { |
| rd = (insn >> 8) & 7; |
| /* load pc-relative. Bit 1 of PC is ignored. */ |
| val = s->pc + 2 + ((insn & 0xff) * 4); |
| val &= ~(uint32_t)2; |
| gen_op_movl_T1_im(val); |
| gen_ldst(ldl, s); |
| gen_movl_reg_T0(s, rd); |
| break; |
| } |
| if (insn & (1 << 10)) { |
| /* data processing extended or blx */ |
| rd = (insn & 7) | ((insn >> 4) & 8); |
| rm = (insn >> 3) & 0xf; |
| op = (insn >> 8) & 3; |
| switch (op) { |
| case 0: /* add */ |
| gen_movl_T0_reg(s, rd); |
| gen_movl_T1_reg(s, rm); |
| gen_op_addl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 1: /* cmp */ |
| gen_movl_T0_reg(s, rd); |
| gen_movl_T1_reg(s, rm); |
| gen_op_subl_T0_T1_cc(); |
| break; |
| case 2: /* mov/cpy */ |
| gen_movl_T0_reg(s, rm); |
| gen_movl_reg_T0(s, rd); |
| break; |
| case 3:/* branch [and link] exchange thumb register */ |
| if (insn & (1 << 7)) { |
| val = (uint32_t)s->pc | 1; |
| gen_op_movl_T1_im(val); |
| gen_movl_reg_T1(s, 14); |
| } |
| gen_movl_T0_reg(s, rm); |
| gen_bx(s); |
| break; |
| } |
| break; |
| } |
| |
| /* data processing register */ |
| rd = insn & 7; |
| rm = (insn >> 3) & 7; |
| op = (insn >> 6) & 0xf; |
| if (op == 2 || op == 3 || op == 4 || op == 7) { |
| /* the shift/rotate ops want the operands backwards */ |
| val = rm; |
| rm = rd; |
| rd = val; |
| val = 1; |
| } else { |
| val = 0; |
| } |
| |
| if (op == 9) /* neg */ |
| gen_op_movl_T0_im(0); |
| else if (op != 0xf) /* mvn doesn't read its first operand */ |
| gen_movl_T0_reg(s, rd); |
| |
| gen_movl_T1_reg(s, rm); |
| switch (op) { |
| case 0x0: /* and */ |
| gen_op_andl_T0_T1(); |
| gen_op_logic_T0_cc(); |
| break; |
| case 0x1: /* eor */ |
| gen_op_xorl_T0_T1(); |
| gen_op_logic_T0_cc(); |
| break; |
| case 0x2: /* lsl */ |
| gen_op_shll_T1_T0_cc(); |
| gen_op_logic_T1_cc(); |
| break; |
| case 0x3: /* lsr */ |
| gen_op_shrl_T1_T0_cc(); |
| gen_op_logic_T1_cc(); |
| break; |
| case 0x4: /* asr */ |
| gen_op_sarl_T1_T0_cc(); |
| gen_op_logic_T1_cc(); |
| break; |
| case 0x5: /* adc */ |
| gen_op_adcl_T0_T1_cc(); |
| break; |
| case 0x6: /* sbc */ |
| gen_op_sbcl_T0_T1_cc(); |
| break; |
| case 0x7: /* ror */ |
| gen_op_rorl_T1_T0_cc(); |
| gen_op_logic_T1_cc(); |
| break; |
| case 0x8: /* tst */ |
| gen_op_andl_T0_T1(); |
| gen_op_logic_T0_cc(); |
| rd = 16; |
| break; |
| case 0x9: /* neg */ |
| gen_op_subl_T0_T1_cc(); |
| break; |
| case 0xa: /* cmp */ |
| gen_op_subl_T0_T1_cc(); |
| rd = 16; |
| break; |
| case 0xb: /* cmn */ |
| gen_op_addl_T0_T1_cc(); |
| rd = 16; |
| break; |
| case 0xc: /* orr */ |
| gen_op_orl_T0_T1(); |
| gen_op_logic_T0_cc(); |
| break; |
| case 0xd: /* mul */ |
| gen_op_mull_T0_T1(); |
| gen_op_logic_T0_cc(); |
| break; |
| case 0xe: /* bic */ |
| gen_op_bicl_T0_T1(); |
| gen_op_logic_T0_cc(); |
| break; |
| case 0xf: /* mvn */ |
| gen_op_notl_T1(); |
| gen_op_logic_T1_cc(); |
| val = 1; |
| rm = rd; |
| break; |
| } |
| if (rd != 16) { |
| if (val) |
| gen_movl_reg_T1(s, rm); |
| else |
| gen_movl_reg_T0(s, rd); |
| } |
| break; |
| |
| case 5: |
| /* load/store register offset. */ |
| rd = insn & 7; |
| rn = (insn >> 3) & 7; |
| rm = (insn >> 6) & 7; |
| op = (insn >> 9) & 7; |
| gen_movl_T1_reg(s, rn); |
| gen_movl_T2_reg(s, rm); |
| gen_op_addl_T1_T2(); |
| |
| if (op < 3) /* store */ |
| gen_movl_T0_reg(s, rd); |
| |
| switch (op) { |
| case 0: /* str */ |
| gen_ldst(stl, s); |
| break; |
| case 1: /* strh */ |
| gen_ldst(stw, s); |
| break; |
| case 2: /* strb */ |
| gen_ldst(stb, s); |
| break; |
| case 3: /* ldrsb */ |
| gen_ldst(ldsb, s); |
| break; |
| case 4: /* ldr */ |
| gen_ldst(ldl, s); |
| break; |
| case 5: /* ldrh */ |
| gen_ldst(lduw, s); |
| break; |
| case 6: /* ldrb */ |
| gen_ldst(ldub, s); |
| break; |
| case 7: /* ldrsh */ |
| gen_ldst(ldsw, s); |
| break; |
| } |
| if (op >= 3) /* load */ |
| gen_movl_reg_T0(s, rd); |
| break; |
| |
| case 6: |
| /* load/store word immediate offset */ |
| rd = insn & 7; |
| rn = (insn >> 3) & 7; |
| gen_movl_T1_reg(s, rn); |
| val = (insn >> 4) & 0x7c; |
| gen_op_movl_T2_im(val); |
| gen_op_addl_T1_T2(); |
| |
| if (insn & (1 << 11)) { |
| /* load */ |
| gen_ldst(ldl, s); |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* store */ |
| gen_movl_T0_reg(s, rd); |
| gen_ldst(stl, s); |
| } |
| break; |
| |
| case 7: |
| /* load/store byte immediate offset */ |
| rd = insn & 7; |
| rn = (insn >> 3) & 7; |
| gen_movl_T1_reg(s, rn); |
| val = (insn >> 6) & 0x1f; |
| gen_op_movl_T2_im(val); |
| gen_op_addl_T1_T2(); |
| |
| if (insn & (1 << 11)) { |
| /* load */ |
| gen_ldst(ldub, s); |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* store */ |
| gen_movl_T0_reg(s, rd); |
| gen_ldst(stb, s); |
| } |
| break; |
| |
| case 8: |
| /* load/store halfword immediate offset */ |
| rd = insn & 7; |
| rn = (insn >> 3) & 7; |
| gen_movl_T1_reg(s, rn); |
| val = (insn >> 5) & 0x3e; |
| gen_op_movl_T2_im(val); |
| gen_op_addl_T1_T2(); |
| |
| if (insn & (1 << 11)) { |
| /* load */ |
| gen_ldst(lduw, s); |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* store */ |
| gen_movl_T0_reg(s, rd); |
| gen_ldst(stw, s); |
| } |
| break; |
| |
| case 9: |
| /* load/store from stack */ |
| rd = (insn >> 8) & 7; |
| gen_movl_T1_reg(s, 13); |
| val = (insn & 0xff) * 4; |
| gen_op_movl_T2_im(val); |
| gen_op_addl_T1_T2(); |
| |
| if (insn & (1 << 11)) { |
| /* load */ |
| gen_ldst(ldl, s); |
| gen_movl_reg_T0(s, rd); |
| } else { |
| /* store */ |
| gen_movl_T0_reg(s, rd); |
| gen_ldst(stl, s); |
| } |
| break; |
| |
| case 10: |
| /* add to high reg */ |
| rd = (insn >> 8) & 7; |
| if (insn & (1 << 11)) { |
| /* SP */ |
| gen_movl_T0_reg(s, 13); |
| } else { |
| /* PC. bit 1 is ignored. */ |
| gen_op_movl_T0_im((s->pc + 2) & ~(uint32_t)2); |
| } |
| val = (insn & 0xff) * 4; |
| gen_op_movl_T1_im(val); |
| gen_op_addl_T0_T1(); |
| gen_movl_reg_T0(s, rd); |
| break; |
| |
| case 11: |
| /* misc */ |
| op = (insn >> 8) & 0xf; |
| switch (op) { |
| case 0: |
| /* adjust stack pointer */ |
| gen_movl_T1_reg(s, 13); |
| val = (insn & 0x7f) * 4; |
| if (insn & (1 << 7)) |
| val = -(int32_t)val; |
| gen_op_movl_T2_im(val); |
| gen_op_addl_T1_T2(); |
| gen_movl_reg_T1(s, 13); |
| break; |
| |
| case 4: case 5: case 0xc: case 0xd: |
| /* push/pop */ |
| gen_movl_T1_reg(s, 13); |
| if (insn & (1 << 8)) |
| offset = 4; |
| else |
| offset = 0; |
| for (i = 0; i < 8; i++) { |
| if (insn & (1 << i)) |
| offset += 4; |
| } |
| if ((insn & (1 << 11)) == 0) { |
| gen_op_movl_T2_im(-offset); |
| gen_op_addl_T1_T2(); |
| } |
| gen_op_movl_T2_im(4); |
| for (i = 0; i < 8; i++) { |
| if (insn & (1 << i)) { |
| if (insn & (1 << 11)) { |
| /* pop */ |
| gen_ldst(ldl, s); |
| gen_movl_reg_T0(s, i); |
| } else { |
| /* push */ |
| gen_movl_T0_reg(s, i); |
| gen_ldst(stl, s); |
| } |
| /* advance to the next address. */ |
| gen_op_addl_T1_T2(); |
| } |
| } |
| if (insn & (1 << 8)) { |
| if (insn & (1 << 11)) { |
| /* pop pc */ |
| gen_ldst(ldl, s); |
| /* don't set the pc until the rest of the instruction |
| has completed */ |
| } else { |
| /* push lr */ |
| gen_movl_T0_reg(s, 14); |
| gen_ldst(stl, s); |
| } |
| gen_op_addl_T1_T2(); |
| } |
| if ((insn & (1 << 11)) == 0) { |
| gen_op_movl_T2_im(-offset); |
| gen_op_addl_T1_T2(); |
| } |
| /* write back the new stack pointer */ |
| gen_movl_reg_T1(s, 13); |
| /* set the new PC value */ |
| if ((insn & 0x0900) == 0x0900) |
| gen_bx(s); |
| break; |
| |
| case 0xe: /* bkpt */ |
| gen_op_movl_T0_im((long)s->pc - 2); |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_bkpt(); |
| s->is_jmp = DISAS_JUMP; |
| break; |
| |
| default: |
| goto undef; |
| } |
| break; |
| |
| case 12: |
| /* load/store multiple */ |
| rn = (insn >> 8) & 0x7; |
| gen_movl_T1_reg(s, rn); |
| gen_op_movl_T2_im(4); |
| for (i = 0; i < 8; i++) { |
| if (insn & (1 << i)) { |
| if (insn & (1 << 11)) { |
| /* load */ |
| gen_ldst(ldl, s); |
| gen_movl_reg_T0(s, i); |
| } else { |
| /* store */ |
| gen_movl_T0_reg(s, i); |
| gen_ldst(stl, s); |
| } |
| /* advance to the next address */ |
| gen_op_addl_T1_T2(); |
| } |
| } |
| /* Base register writeback. */ |
| if ((insn & (1 << rn)) == 0) |
| gen_movl_reg_T1(s, rn); |
| break; |
| |
| case 13: |
| /* conditional branch or swi */ |
| cond = (insn >> 8) & 0xf; |
| if (cond == 0xe) |
| goto undef; |
| |
| if (cond == 0xf) { |
| /* swi */ |
| gen_op_movl_T0_im((long)s->pc | 1); |
| /* Don't set r15. */ |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_swi(); |
| s->is_jmp = DISAS_JUMP; |
| break; |
| } |
| /* generate a conditional jump to next instruction */ |
| s->condlabel = gen_new_label(); |
| gen_test_cc[cond ^ 1](s->condlabel); |
| s->condjmp = 1; |
| //gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc); |
| //s->is_jmp = DISAS_JUMP_NEXT; |
| gen_movl_T1_reg(s, 15); |
| |
| /* jump to the offset */ |
| val = (uint32_t)s->pc + 2; |
| offset = ((int32_t)insn << 24) >> 24; |
| val += offset << 1; |
| gen_jmp(s, val); |
| break; |
| |
| case 14: |
| /* unconditional branch */ |
| if (insn & (1 << 11)) { |
| /* Second half of blx. */ |
| offset = ((insn & 0x7ff) << 1); |
| gen_movl_T0_reg(s, 14); |
| gen_op_movl_T1_im(offset); |
| gen_op_addl_T0_T1(); |
| gen_op_movl_T1_im(0xfffffffc); |
| gen_op_andl_T0_T1(); |
| |
| val = (uint32_t)s->pc; |
| gen_op_movl_T1_im(val | 1); |
| gen_movl_reg_T1(s, 14); |
| gen_bx(s); |
| break; |
| } |
| val = (uint32_t)s->pc; |
| offset = ((int32_t)insn << 21) >> 21; |
| val += (offset << 1) + 2; |
| gen_jmp(s, val); |
| break; |
| |
| case 15: |
| /* branch and link [and switch to arm] */ |
| if ((s->pc & ~TARGET_PAGE_MASK) == 0) { |
| /* Instruction spans a page boundary. Implement it as two |
| 16-bit instructions in case the second half causes an |
| prefetch abort. */ |
| offset = ((int32_t)insn << 21) >> 9; |
| val = s->pc + 2 + offset; |
| gen_op_movl_T0_im(val); |
| gen_movl_reg_T0(s, 14); |
| break; |
| } |
| if (insn & (1 << 11)) { |
| /* Second half of bl. */ |
| offset = ((insn & 0x7ff) << 1) | 1; |
| gen_movl_T0_reg(s, 14); |
| gen_op_movl_T1_im(offset); |
| gen_op_addl_T0_T1(); |
| |
| val = (uint32_t)s->pc; |
| gen_op_movl_T1_im(val | 1); |
| gen_movl_reg_T1(s, 14); |
| gen_bx(s); |
| break; |
| } |
| offset = ((int32_t)insn << 21) >> 10; |
| insn = lduw_code(s->pc); |
| offset |= insn & 0x7ff; |
| |
| val = (uint32_t)s->pc + 2; |
| gen_op_movl_T1_im(val | 1); |
| gen_movl_reg_T1(s, 14); |
| |
| val += offset << 1; |
| if (insn & (1 << 12)) { |
| /* bl */ |
| gen_jmp(s, val); |
| } else { |
| /* blx */ |
| val &= ~(uint32_t)2; |
| gen_op_movl_T0_im(val); |
| gen_bx(s); |
| } |
| } |
| return; |
| undef: |
| gen_op_movl_T0_im((long)s->pc - 2); |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_undef_insn(); |
| s->is_jmp = DISAS_JUMP; |
| } |
| |
| /* generate intermediate code in gen_opc_buf and gen_opparam_buf for |
| basic block 'tb'. If search_pc is TRUE, also generate PC |
| information for each intermediate instruction. */ |
| static inline int gen_intermediate_code_internal(CPUState *env, |
| TranslationBlock *tb, |
| int search_pc) |
| { |
| DisasContext dc1, *dc = &dc1; |
| uint16_t *gen_opc_end; |
| int j, lj; |
| target_ulong pc_start; |
| uint32_t next_page_start; |
| |
| /* generate intermediate code */ |
| pc_start = tb->pc; |
| |
| dc->tb = tb; |
| |
| gen_opc_ptr = gen_opc_buf; |
| gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
| gen_opparam_ptr = gen_opparam_buf; |
| |
| dc->is_jmp = DISAS_NEXT; |
| dc->pc = pc_start; |
| dc->singlestep_enabled = env->singlestep_enabled; |
| dc->condjmp = 0; |
| dc->thumb = env->thumb; |
| #if !defined(CONFIG_USER_ONLY) |
| dc->user = (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_USR; |
| #endif |
| next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; |
| nb_gen_labels = 0; |
| lj = -1; |
| do { |
| if (env->nb_breakpoints > 0) { |
| for(j = 0; j < env->nb_breakpoints; j++) { |
| if (env->breakpoints[j] == dc->pc) { |
| gen_op_movl_T0_im((long)dc->pc); |
| gen_op_movl_reg_TN[0][15](); |
| gen_op_debug(); |
| dc->is_jmp = DISAS_JUMP; |
| break; |
| } |
| } |
| } |
| if (search_pc) { |
| j = gen_opc_ptr - gen_opc_buf; |
| if (lj < j) { |
| lj++; |
| while (lj < j) |
| gen_opc_instr_start[lj++] = 0; |
| } |
| gen_opc_pc[lj] = dc->pc; |
| gen_opc_instr_start[lj] = 1; |
| } |
| |
| if (env->thumb) |
| disas_thumb_insn(dc); |
| else |
| disas_arm_insn(env, dc); |
| |
| if (dc->condjmp && !dc->is_jmp) { |
| gen_set_label(dc->condlabel); |
| dc->condjmp = 0; |
| } |
| /* Translation stops when a conditional branch is enoutered. |
| * Otherwise the subsequent code could get translated several times. |
| * Also stop translation when a page boundary is reached. This |
| * ensures prefech aborts occur at the right place. */ |
| } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end && |
| !env->singlestep_enabled && |
| dc->pc < next_page_start); |
| /* At this stage dc->condjmp will only be set when the skipped |
| * instruction was a conditional branch, and the PC has already been |
| * written. */ |
| if (__builtin_expect(env->singlestep_enabled, 0)) { |
| /* Make sure the pc is updated, and raise a debug exception. */ |
| if (dc->condjmp) { |
| gen_op_debug(); |
| gen_set_label(dc->condlabel); |
| } |
| if (dc->condjmp || !dc->is_jmp) { |
| gen_op_movl_T0_im((long)dc->pc); |
| gen_op_movl_reg_TN[0][15](); |
| dc->condjmp = 0; |
| } |
| gen_op_debug(); |
| } else { |
| switch(dc->is_jmp) { |
| case DISAS_NEXT: |
| gen_goto_tb(dc, 1, dc->pc); |
| break; |
| default: |
| case DISAS_JUMP: |
| case DISAS_UPDATE: |
| /* indicate that the hash table must be used to find the next TB */ |
| gen_op_movl_T0_0(); |
| gen_op_exit_tb(); |
| break; |
| case DISAS_TB_JUMP: |
| /* nothing more to generate */ |
| break; |
| } |
| if (dc->condjmp) { |
| gen_set_label(dc->condlabel); |
| gen_goto_tb(dc, 1, dc->pc); |
| dc->condjmp = 0; |
| } |
| } |
| *gen_opc_ptr = INDEX_op_end; |
| |
| #ifdef DEBUG_DISAS |
| if (loglevel & CPU_LOG_TB_IN_ASM) { |
| fprintf(logfile, "----------------\n"); |
| fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start)); |
| target_disas(logfile, pc_start, dc->pc - pc_start, env->thumb); |
| fprintf(logfile, "\n"); |
| if (loglevel & (CPU_LOG_TB_OP)) { |
| fprintf(logfile, "OP:\n"); |
| dump_ops(gen_opc_buf, gen_opparam_buf); |
| fprintf(logfile, "\n"); |
| } |
| } |
| #endif |
| if (search_pc) { |
| j = gen_opc_ptr - gen_opc_buf; |
| lj++; |
| while (lj <= j) |
| gen_opc_instr_start[lj++] = 0; |
| tb->size = 0; |
| } else { |
| tb->size = dc->pc - pc_start; |
| } |
| return 0; |
| } |
| |
| int gen_intermediate_code(CPUState *env, TranslationBlock *tb) |
| { |
| return gen_intermediate_code_internal(env, tb, 0); |
| } |
| |
| int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb) |
| { |
| return gen_intermediate_code_internal(env, tb, 1); |
| } |
| |
| static const char *cpu_mode_names[16] = { |
| "usr", "fiq", "irq", "svc", "???", "???", "???", "abt", |
| "???", "???", "???", "und", "???", "???", "???", "sys" |
| }; |
| void cpu_dump_state(CPUState *env, FILE *f, |
| int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
| int flags) |
| { |
| int i; |
| union { |
| uint32_t i; |
| float s; |
| } s0, s1; |
| CPU_DoubleU d; |
| uint32_t psr; |
| |
| for(i=0;i<16;i++) { |
| cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]); |
| if ((i % 4) == 3) |
| cpu_fprintf(f, "\n"); |
| else |
| cpu_fprintf(f, " "); |
| } |
| psr = cpsr_read(env); |
| cpu_fprintf(f, "PSR=%08x %c%c%c%c %c %s%d %x\n", |
| psr, |
| psr & (1 << 31) ? 'N' : '-', |
| psr & (1 << 30) ? 'Z' : '-', |
| psr & (1 << 29) ? 'C' : '-', |
| psr & (1 << 28) ? 'V' : '-', |
| psr & CPSR_T ? 'T' : 'A', |
| cpu_mode_names[psr & 0xf], (psr & 0x10) ? 32 : 26); |
| |
| for (i = 0; i < 16; i++) { |
| d.d = env->vfp.regs[i]; |
| s0.i = d.l.lower; |
| s1.i = d.l.upper; |
| cpu_fprintf(f, "s%02d=%08x(%8f) s%02d=%08x(%8f) d%02d=%08x%08x(%8f)\n", |
| i * 2, (int)s0.i, s0.s, |
| i * 2 + 1, (int)s0.i, s0.s, |
| i, (int)(uint32_t)d.l.upper, (int)(uint32_t)d.l.lower, |
| d.d); |
| } |
| cpu_fprintf(f, "FPSCR: %08x\n", (int)env->vfp.xregs[ARM_VFP_FPSCR]); |
| } |
| |
