root / target-cris / translate.c @ 8d0eb050
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/*
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* CRIS emulation for qemu: main translation routines.
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*
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* Copyright (c) 2008 AXIS Communications AB
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* Written by Edgar E. Iglesias.
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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, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* FIXME:
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* The condition code translation is in need of attention.
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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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#include "tcg-op.h" |
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#include "helper.h" |
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#include "mmu.h" |
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#include "crisv32-decode.h" |
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#include "qemu-common.h" |
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#define GEN_HELPER 1 |
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#include "helper.h" |
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#define DISAS_CRIS 0 |
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#if DISAS_CRIS
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# define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__) |
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#else
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# define LOG_DIS(...) do { } while (0) |
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#endif
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#define D(x)
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#define BUG() (gen_BUG(dc, __FILE__, __LINE__))
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#define BUG_ON(x) ({if (x) BUG();}) |
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#define DISAS_SWI 5 |
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/* Used by the decoder. */
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#define EXTRACT_FIELD(src, start, end) \
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(((src) >> start) & ((1 << (end - start + 1)) - 1)) |
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#define CC_MASK_NZ 0xc |
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#define CC_MASK_NZV 0xe |
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#define CC_MASK_NZVC 0xf |
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#define CC_MASK_RNZV 0x10e |
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static TCGv_ptr cpu_env;
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static TCGv cpu_R[16]; |
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static TCGv cpu_PR[16]; |
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static TCGv cc_x;
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static TCGv cc_src;
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static TCGv cc_dest;
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static TCGv cc_result;
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static TCGv cc_op;
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static TCGv cc_size;
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static TCGv cc_mask;
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static TCGv env_btaken;
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static TCGv env_btarget;
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static TCGv env_pc;
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#include "gen-icount.h" |
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/* This is the state at translation time. */
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typedef struct DisasContext { |
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CPUState *env; |
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target_ulong pc, ppc; |
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/* Decoder. */
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uint32_t ir; |
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uint32_t opcode; |
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unsigned int op1; |
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unsigned int op2; |
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unsigned int zsize, zzsize; |
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unsigned int mode; |
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unsigned int postinc; |
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int update_cc;
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int cc_op;
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int cc_size;
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uint32_t cc_mask; |
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int cc_size_uptodate; /* -1 invalid or last written value. */ |
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int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not uptodate. */ |
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int flags_uptodate; /* Wether or not $ccs is uptodate. */ |
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int flagx_known; /* Wether or not flags_x has the x flag known at |
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translation time. */
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int flags_x;
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int clear_x; /* Clear x after this insn? */ |
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int cpustate_changed;
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unsigned int tb_flags; /* tb dependent flags. */ |
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int is_jmp;
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#define JMP_NOJMP 0 |
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#define JMP_DIRECT 1 |
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#define JMP_INDIRECT 2 |
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int jmp; /* 0=nojmp, 1=direct, 2=indirect. */ |
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uint32_t jmp_pc; |
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int delayed_branch;
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struct TranslationBlock *tb;
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int singlestep_enabled;
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} DisasContext; |
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static void gen_BUG(DisasContext *dc, const char *file, int line) |
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{ |
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printf ("BUG: pc=%x %s %d\n", dc->pc, file, line);
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qemu_log("BUG: pc=%x %s %d\n", dc->pc, file, line);
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cpu_abort(dc->env, "%s:%d\n", file, line);
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} |
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static const char *regnames[] = |
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{ |
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"$r0", "$r1", "$r2", "$r3", |
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"$r4", "$r5", "$r6", "$r7", |
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"$r8", "$r9", "$r10", "$r11", |
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"$r12", "$r13", "$sp", "$acr", |
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}; |
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static const char *pregnames[] = |
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{ |
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"$bz", "$vr", "$pid", "$srs", |
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"$wz", "$exs", "$eda", "$mof", |
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"$dz", "$ebp", "$erp", "$srp", |
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"$nrp", "$ccs", "$usp", "$spc", |
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}; |
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/* We need this table to handle preg-moves with implicit width. */
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static int preg_sizes[] = { |
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1, /* bz. */ |
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1, /* vr. */ |
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4, /* pid. */ |
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1, /* srs. */ |
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2, /* wz. */ |
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4, 4, 4, |
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4, 4, 4, 4, |
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4, 4, 4, 4, |
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}; |
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#define t_gen_mov_TN_env(tn, member) \
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_t_gen_mov_TN_env((tn), offsetof(CPUState, member)) |
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#define t_gen_mov_env_TN(member, tn) \
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_t_gen_mov_env_TN(offsetof(CPUState, member), (tn)) |
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static inline void t_gen_mov_TN_reg(TCGv tn, int r) |
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{ |
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if (r < 0 || r > 15) |
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fprintf(stderr, "wrong register read $r%d\n", r);
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tcg_gen_mov_tl(tn, cpu_R[r]); |
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} |
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static inline void t_gen_mov_reg_TN(int r, TCGv tn) |
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{ |
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if (r < 0 || r > 15) |
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fprintf(stderr, "wrong register write $r%d\n", r);
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tcg_gen_mov_tl(cpu_R[r], tn); |
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} |
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static inline void _t_gen_mov_TN_env(TCGv tn, int offset) |
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{ |
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if (offset > sizeof (CPUState)) |
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fprintf(stderr, "wrong load from env from off=%d\n", offset);
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tcg_gen_ld_tl(tn, cpu_env, offset); |
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} |
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static inline void _t_gen_mov_env_TN(int offset, TCGv tn) |
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{ |
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if (offset > sizeof (CPUState)) |
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fprintf(stderr, "wrong store to env at off=%d\n", offset);
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tcg_gen_st_tl(tn, cpu_env, offset); |
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} |
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static inline void t_gen_mov_TN_preg(TCGv tn, int r) |
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{ |
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if (r < 0 || r > 15) |
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fprintf(stderr, "wrong register read $p%d\n", r);
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if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
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tcg_gen_mov_tl(tn, tcg_const_tl(0));
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else if (r == PR_VR) |
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tcg_gen_mov_tl(tn, tcg_const_tl(32));
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else if (r == PR_EDA) { |
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printf("read from EDA!\n");
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tcg_gen_mov_tl(tn, cpu_PR[r]); |
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} |
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else
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tcg_gen_mov_tl(tn, cpu_PR[r]); |
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} |
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static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn) |
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{ |
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if (r < 0 || r > 15) |
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fprintf(stderr, "wrong register write $p%d\n", r);
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if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
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return;
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else if (r == PR_SRS) |
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tcg_gen_andi_tl(cpu_PR[r], tn, 3);
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else {
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if (r == PR_PID)
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gen_helper_tlb_flush_pid(tn); |
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if (dc->tb_flags & S_FLAG && r == PR_SPC)
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gen_helper_spc_write(tn); |
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else if (r == PR_CCS) |
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dc->cpustate_changed = 1;
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tcg_gen_mov_tl(cpu_PR[r], tn); |
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} |
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} |
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static inline void t_gen_raise_exception(uint32_t index) |
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{ |
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TCGv_i32 tmp = tcg_const_i32(index); |
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gen_helper_raise_exception(tmp); |
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tcg_temp_free_i32(tmp); |
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} |
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static void t_gen_lsl(TCGv d, TCGv a, TCGv b) |
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{ |
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TCGv t0, t_31; |
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t0 = tcg_temp_new(); |
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t_31 = tcg_const_tl(31);
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tcg_gen_shl_tl(d, a, b); |
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tcg_gen_sub_tl(t0, t_31, b); |
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tcg_gen_sar_tl(t0, t0, t_31); |
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tcg_gen_and_tl(t0, t0, d); |
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tcg_gen_xor_tl(d, d, t0); |
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tcg_temp_free(t0); |
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tcg_temp_free(t_31); |
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} |
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static void t_gen_lsr(TCGv d, TCGv a, TCGv b) |
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{ |
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TCGv t0, t_31; |
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t0 = tcg_temp_new(); |
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t_31 = tcg_temp_new(); |
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tcg_gen_shr_tl(d, a, b); |
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tcg_gen_movi_tl(t_31, 31);
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tcg_gen_sub_tl(t0, t_31, b); |
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tcg_gen_sar_tl(t0, t0, t_31); |
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tcg_gen_and_tl(t0, t0, d); |
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tcg_gen_xor_tl(d, d, t0); |
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tcg_temp_free(t0); |
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tcg_temp_free(t_31); |
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} |
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static void t_gen_asr(TCGv d, TCGv a, TCGv b) |
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{ |
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TCGv t0, t_31; |
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t0 = tcg_temp_new(); |
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t_31 = tcg_temp_new(); |
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tcg_gen_sar_tl(d, a, b); |
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tcg_gen_movi_tl(t_31, 31);
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tcg_gen_sub_tl(t0, t_31, b); |
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tcg_gen_sar_tl(t0, t0, t_31); |
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tcg_gen_or_tl(d, d, t0); |
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tcg_temp_free(t0); |
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tcg_temp_free(t_31); |
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} |
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/* 64-bit signed mul, lower result in d and upper in d2. */
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static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b) |
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{ |
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TCGv_i64 t0, t1; |
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t0 = tcg_temp_new_i64(); |
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t1 = tcg_temp_new_i64(); |
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tcg_gen_ext_i32_i64(t0, a); |
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tcg_gen_ext_i32_i64(t1, b); |
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tcg_gen_mul_i64(t0, t0, t1); |
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tcg_gen_trunc_i64_i32(d, t0); |
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tcg_gen_shri_i64(t0, t0, 32);
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tcg_gen_trunc_i64_i32(d2, t0); |
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tcg_temp_free_i64(t0); |
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tcg_temp_free_i64(t1); |
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} |
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/* 64-bit unsigned muls, lower result in d and upper in d2. */
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static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b) |
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{ |
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TCGv_i64 t0, t1; |
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t0 = tcg_temp_new_i64(); |
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t1 = tcg_temp_new_i64(); |
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tcg_gen_extu_i32_i64(t0, a); |
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tcg_gen_extu_i32_i64(t1, b); |
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tcg_gen_mul_i64(t0, t0, t1); |
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tcg_gen_trunc_i64_i32(d, t0); |
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tcg_gen_shri_i64(t0, t0, 32);
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tcg_gen_trunc_i64_i32(d2, t0); |
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tcg_temp_free_i64(t0); |
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tcg_temp_free_i64(t1); |
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} |
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static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b) |
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{ |
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int l1;
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l1 = gen_new_label(); |
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/*
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* d <<= 1
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* if (d >= s)
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* d -= s;
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*/
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tcg_gen_shli_tl(d, a, 1);
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tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1); |
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tcg_gen_sub_tl(d, d, b); |
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gen_set_label(l1); |
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} |
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/* Extended arithmetics on CRIS. */
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static inline void t_gen_add_flag(TCGv d, int flag) |
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{ |
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TCGv c; |
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c = tcg_temp_new(); |
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t_gen_mov_TN_preg(c, PR_CCS); |
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/* Propagate carry into d. */
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tcg_gen_andi_tl(c, c, 1 << flag);
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if (flag)
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tcg_gen_shri_tl(c, c, flag); |
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tcg_gen_add_tl(d, d, c); |
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tcg_temp_free(c); |
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} |
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static inline void t_gen_addx_carry(DisasContext *dc, TCGv d) |
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{ |
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if (dc->flagx_known) {
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if (dc->flags_x) {
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TCGv c; |
359 |
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c = tcg_temp_new(); |
361 |
t_gen_mov_TN_preg(c, PR_CCS); |
362 |
/* C flag is already at bit 0. */
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tcg_gen_andi_tl(c, c, C_FLAG); |
364 |
tcg_gen_add_tl(d, d, c); |
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tcg_temp_free(c); |
366 |
} |
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} else {
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TCGv x, c; |
369 |
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x = tcg_temp_new(); |
371 |
c = tcg_temp_new(); |
372 |
t_gen_mov_TN_preg(x, PR_CCS); |
373 |
tcg_gen_mov_tl(c, x); |
374 |
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/* Propagate carry into d if X is set. Branch free. */
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tcg_gen_andi_tl(c, c, C_FLAG); |
377 |
tcg_gen_andi_tl(x, x, X_FLAG); |
378 |
tcg_gen_shri_tl(x, x, 4);
|
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|
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tcg_gen_and_tl(x, x, c); |
381 |
tcg_gen_add_tl(d, d, x); |
382 |
tcg_temp_free(x); |
383 |
tcg_temp_free(c); |
384 |
} |
385 |
} |
386 |
|
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static inline void t_gen_subx_carry(DisasContext *dc, TCGv d) |
388 |
{ |
389 |
if (dc->flagx_known) {
|
390 |
if (dc->flags_x) {
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391 |
TCGv c; |
392 |
|
393 |
c = tcg_temp_new(); |
394 |
t_gen_mov_TN_preg(c, PR_CCS); |
395 |
/* C flag is already at bit 0. */
|
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tcg_gen_andi_tl(c, c, C_FLAG); |
397 |
tcg_gen_sub_tl(d, d, c); |
398 |
tcg_temp_free(c); |
399 |
} |
400 |
} else {
|
401 |
TCGv x, c; |
402 |
|
403 |
x = tcg_temp_new(); |
404 |
c = tcg_temp_new(); |
405 |
t_gen_mov_TN_preg(x, PR_CCS); |
406 |
tcg_gen_mov_tl(c, x); |
407 |
|
408 |
/* Propagate carry into d if X is set. Branch free. */
|
409 |
tcg_gen_andi_tl(c, c, C_FLAG); |
410 |
tcg_gen_andi_tl(x, x, X_FLAG); |
411 |
tcg_gen_shri_tl(x, x, 4);
|
412 |
|
413 |
tcg_gen_and_tl(x, x, c); |
414 |
tcg_gen_sub_tl(d, d, x); |
415 |
tcg_temp_free(x); |
416 |
tcg_temp_free(c); |
417 |
} |
418 |
} |
419 |
|
420 |
/* Swap the two bytes within each half word of the s operand.
|
421 |
T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
|
422 |
static inline void t_gen_swapb(TCGv d, TCGv s) |
423 |
{ |
424 |
TCGv t, org_s; |
425 |
|
426 |
t = tcg_temp_new(); |
427 |
org_s = tcg_temp_new(); |
428 |
|
429 |
/* d and s may refer to the same object. */
|
430 |
tcg_gen_mov_tl(org_s, s); |
431 |
tcg_gen_shli_tl(t, org_s, 8);
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432 |
tcg_gen_andi_tl(d, t, 0xff00ff00);
|
433 |
tcg_gen_shri_tl(t, org_s, 8);
|
434 |
tcg_gen_andi_tl(t, t, 0x00ff00ff);
|
435 |
tcg_gen_or_tl(d, d, t); |
436 |
tcg_temp_free(t); |
437 |
tcg_temp_free(org_s); |
438 |
} |
439 |
|
440 |
/* Swap the halfwords of the s operand. */
|
441 |
static inline void t_gen_swapw(TCGv d, TCGv s) |
442 |
{ |
443 |
TCGv t; |
444 |
/* d and s refer the same object. */
|
445 |
t = tcg_temp_new(); |
446 |
tcg_gen_mov_tl(t, s); |
447 |
tcg_gen_shli_tl(d, t, 16);
|
448 |
tcg_gen_shri_tl(t, t, 16);
|
449 |
tcg_gen_or_tl(d, d, t); |
450 |
tcg_temp_free(t); |
451 |
} |
452 |
|
453 |
/* Reverse the within each byte.
|
454 |
T0 = (((T0 << 7) & 0x80808080) |
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455 |
((T0 << 5) & 0x40404040) |
|
456 |
((T0 << 3) & 0x20202020) |
|
457 |
((T0 << 1) & 0x10101010) |
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458 |
((T0 >> 1) & 0x08080808) |
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((T0 >> 3) & 0x04040404) |
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((T0 >> 5) & 0x02020202) |
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461 |
((T0 >> 7) & 0x01010101));
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*/
|
463 |
static inline void t_gen_swapr(TCGv d, TCGv s) |
464 |
{ |
465 |
struct {
|
466 |
int shift; /* LSL when positive, LSR when negative. */ |
467 |
uint32_t mask; |
468 |
} bitrev [] = { |
469 |
{7, 0x80808080}, |
470 |
{5, 0x40404040}, |
471 |
{3, 0x20202020}, |
472 |
{1, 0x10101010}, |
473 |
{-1, 0x08080808}, |
474 |
{-3, 0x04040404}, |
475 |
{-5, 0x02020202}, |
476 |
{-7, 0x01010101} |
477 |
}; |
478 |
int i;
|
479 |
TCGv t, org_s; |
480 |
|
481 |
/* d and s refer the same object. */
|
482 |
t = tcg_temp_new(); |
483 |
org_s = tcg_temp_new(); |
484 |
tcg_gen_mov_tl(org_s, s); |
485 |
|
486 |
tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
|
487 |
tcg_gen_andi_tl(d, t, bitrev[0].mask);
|
488 |
for (i = 1; i < ARRAY_SIZE(bitrev); i++) { |
489 |
if (bitrev[i].shift >= 0) { |
490 |
tcg_gen_shli_tl(t, org_s, bitrev[i].shift); |
491 |
} else {
|
492 |
tcg_gen_shri_tl(t, org_s, -bitrev[i].shift); |
493 |
} |
494 |
tcg_gen_andi_tl(t, t, bitrev[i].mask); |
495 |
tcg_gen_or_tl(d, d, t); |
496 |
} |
497 |
tcg_temp_free(t); |
498 |
tcg_temp_free(org_s); |
499 |
} |
500 |
|
501 |
static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false) |
502 |
{ |
503 |
TCGv btaken; |
504 |
int l1;
|
505 |
|
506 |
l1 = gen_new_label(); |
507 |
btaken = tcg_temp_new(); |
508 |
|
509 |
/* Conditional jmp. */
|
510 |
tcg_gen_mov_tl(btaken, env_btaken); |
511 |
tcg_gen_mov_tl(env_pc, pc_false); |
512 |
tcg_gen_brcondi_tl(TCG_COND_EQ, btaken, 0, l1);
|
513 |
tcg_gen_mov_tl(env_pc, pc_true); |
514 |
gen_set_label(l1); |
515 |
|
516 |
tcg_temp_free(btaken); |
517 |
} |
518 |
|
519 |
static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) |
520 |
{ |
521 |
TranslationBlock *tb; |
522 |
tb = dc->tb; |
523 |
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
|
524 |
tcg_gen_goto_tb(n); |
525 |
tcg_gen_movi_tl(env_pc, dest); |
526 |
tcg_gen_exit_tb((long)tb + n);
|
527 |
} else {
|
528 |
tcg_gen_movi_tl(env_pc, dest); |
529 |
tcg_gen_exit_tb(0);
|
530 |
} |
531 |
} |
532 |
|
533 |
/* Sign extend at translation time. */
|
534 |
static int sign_extend(unsigned int val, unsigned int width) |
535 |
{ |
536 |
int sval;
|
537 |
|
538 |
/* LSL. */
|
539 |
val <<= 31 - width;
|
540 |
sval = val; |
541 |
/* ASR. */
|
542 |
sval >>= 31 - width;
|
543 |
return sval;
|
544 |
} |
545 |
|
546 |
static inline void cris_clear_x_flag(DisasContext *dc) |
547 |
{ |
548 |
if (dc->flagx_known && dc->flags_x)
|
549 |
dc->flags_uptodate = 0;
|
550 |
|
551 |
dc->flagx_known = 1;
|
552 |
dc->flags_x = 0;
|
553 |
} |
554 |
|
555 |
static void cris_flush_cc_state(DisasContext *dc) |
556 |
{ |
557 |
if (dc->cc_size_uptodate != dc->cc_size) {
|
558 |
tcg_gen_movi_tl(cc_size, dc->cc_size); |
559 |
dc->cc_size_uptodate = dc->cc_size; |
560 |
} |
561 |
tcg_gen_movi_tl(cc_op, dc->cc_op); |
562 |
tcg_gen_movi_tl(cc_mask, dc->cc_mask); |
563 |
} |
564 |
|
565 |
static void cris_evaluate_flags(DisasContext *dc) |
566 |
{ |
567 |
if (dc->flags_uptodate)
|
568 |
return;
|
569 |
|
570 |
cris_flush_cc_state(dc); |
571 |
|
572 |
switch (dc->cc_op)
|
573 |
{ |
574 |
case CC_OP_MCP:
|
575 |
gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], |
576 |
cpu_PR[PR_CCS], cc_src, |
577 |
cc_dest, cc_result); |
578 |
break;
|
579 |
case CC_OP_MULS:
|
580 |
gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], |
581 |
cpu_PR[PR_CCS], cc_result, |
582 |
cpu_PR[PR_MOF]); |
583 |
break;
|
584 |
case CC_OP_MULU:
|
585 |
gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], |
586 |
cpu_PR[PR_CCS], cc_result, |
587 |
cpu_PR[PR_MOF]); |
588 |
break;
|
589 |
case CC_OP_MOVE:
|
590 |
case CC_OP_AND:
|
591 |
case CC_OP_OR:
|
592 |
case CC_OP_XOR:
|
593 |
case CC_OP_ASR:
|
594 |
case CC_OP_LSR:
|
595 |
case CC_OP_LSL:
|
596 |
switch (dc->cc_size)
|
597 |
{ |
598 |
case 4: |
599 |
gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS], |
600 |
cpu_PR[PR_CCS], cc_result); |
601 |
break;
|
602 |
case 2: |
603 |
gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS], |
604 |
cpu_PR[PR_CCS], cc_result); |
605 |
break;
|
606 |
default:
|
607 |
gen_helper_evaluate_flags(); |
608 |
break;
|
609 |
} |
610 |
break;
|
611 |
case CC_OP_FLAGS:
|
612 |
/* live. */
|
613 |
break;
|
614 |
case CC_OP_SUB:
|
615 |
case CC_OP_CMP:
|
616 |
if (dc->cc_size == 4) |
617 |
gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], |
618 |
cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); |
619 |
else
|
620 |
gen_helper_evaluate_flags(); |
621 |
|
622 |
break;
|
623 |
default:
|
624 |
switch (dc->cc_size)
|
625 |
{ |
626 |
case 4: |
627 |
gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], |
628 |
cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); |
629 |
break;
|
630 |
default:
|
631 |
gen_helper_evaluate_flags(); |
632 |
break;
|
633 |
} |
634 |
break;
|
635 |
} |
636 |
|
637 |
if (dc->flagx_known) {
|
638 |
if (dc->flags_x)
|
639 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], |
640 |
cpu_PR[PR_CCS], X_FLAG); |
641 |
else
|
642 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], |
643 |
cpu_PR[PR_CCS], ~X_FLAG); |
644 |
} |
645 |
dc->flags_uptodate = 1;
|
646 |
} |
647 |
|
648 |
static void cris_cc_mask(DisasContext *dc, unsigned int mask) |
649 |
{ |
650 |
uint32_t ovl; |
651 |
|
652 |
if (!mask) {
|
653 |
dc->update_cc = 0;
|
654 |
return;
|
655 |
} |
656 |
|
657 |
/* Check if we need to evaluate the condition codes due to
|
658 |
CC overlaying. */
|
659 |
ovl = (dc->cc_mask ^ mask) & ~mask; |
660 |
if (ovl) {
|
661 |
/* TODO: optimize this case. It trigs all the time. */
|
662 |
cris_evaluate_flags (dc); |
663 |
} |
664 |
dc->cc_mask = mask; |
665 |
dc->update_cc = 1;
|
666 |
} |
667 |
|
668 |
static void cris_update_cc_op(DisasContext *dc, int op, int size) |
669 |
{ |
670 |
dc->cc_op = op; |
671 |
dc->cc_size = size; |
672 |
dc->flags_uptodate = 0;
|
673 |
} |
674 |
|
675 |
static inline void cris_update_cc_x(DisasContext *dc) |
676 |
{ |
677 |
/* Save the x flag state at the time of the cc snapshot. */
|
678 |
if (dc->flagx_known) {
|
679 |
if (dc->cc_x_uptodate == (2 | dc->flags_x)) |
680 |
return;
|
681 |
tcg_gen_movi_tl(cc_x, dc->flags_x); |
682 |
dc->cc_x_uptodate = 2 | dc->flags_x;
|
683 |
} |
684 |
else {
|
685 |
tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG); |
686 |
dc->cc_x_uptodate = 1;
|
687 |
} |
688 |
} |
689 |
|
690 |
/* Update cc prior to executing ALU op. Needs source operands untouched. */
|
691 |
static void cris_pre_alu_update_cc(DisasContext *dc, int op, |
692 |
TCGv dst, TCGv src, int size)
|
693 |
{ |
694 |
if (dc->update_cc) {
|
695 |
cris_update_cc_op(dc, op, size); |
696 |
tcg_gen_mov_tl(cc_src, src); |
697 |
|
698 |
if (op != CC_OP_MOVE
|
699 |
&& op != CC_OP_AND |
700 |
&& op != CC_OP_OR |
701 |
&& op != CC_OP_XOR |
702 |
&& op != CC_OP_ASR |
703 |
&& op != CC_OP_LSR |
704 |
&& op != CC_OP_LSL) |
705 |
tcg_gen_mov_tl(cc_dest, dst); |
706 |
|
707 |
cris_update_cc_x(dc); |
708 |
} |
709 |
} |
710 |
|
711 |
/* Update cc after executing ALU op. needs the result. */
|
712 |
static inline void cris_update_result(DisasContext *dc, TCGv res) |
713 |
{ |
714 |
if (dc->update_cc)
|
715 |
tcg_gen_mov_tl(cc_result, res); |
716 |
} |
717 |
|
718 |
/* Returns one if the write back stage should execute. */
|
719 |
static void cris_alu_op_exec(DisasContext *dc, int op, |
720 |
TCGv dst, TCGv a, TCGv b, int size)
|
721 |
{ |
722 |
/* Emit the ALU insns. */
|
723 |
switch (op)
|
724 |
{ |
725 |
case CC_OP_ADD:
|
726 |
tcg_gen_add_tl(dst, a, b); |
727 |
/* Extended arithmetics. */
|
728 |
t_gen_addx_carry(dc, dst); |
729 |
break;
|
730 |
case CC_OP_ADDC:
|
731 |
tcg_gen_add_tl(dst, a, b); |
732 |
t_gen_add_flag(dst, 0); /* C_FLAG. */ |
733 |
break;
|
734 |
case CC_OP_MCP:
|
735 |
tcg_gen_add_tl(dst, a, b); |
736 |
t_gen_add_flag(dst, 8); /* R_FLAG. */ |
737 |
break;
|
738 |
case CC_OP_SUB:
|
739 |
tcg_gen_sub_tl(dst, a, b); |
740 |
/* Extended arithmetics. */
|
741 |
t_gen_subx_carry(dc, dst); |
742 |
break;
|
743 |
case CC_OP_MOVE:
|
744 |
tcg_gen_mov_tl(dst, b); |
745 |
break;
|
746 |
case CC_OP_OR:
|
747 |
tcg_gen_or_tl(dst, a, b); |
748 |
break;
|
749 |
case CC_OP_AND:
|
750 |
tcg_gen_and_tl(dst, a, b); |
751 |
break;
|
752 |
case CC_OP_XOR:
|
753 |
tcg_gen_xor_tl(dst, a, b); |
754 |
break;
|
755 |
case CC_OP_LSL:
|
756 |
t_gen_lsl(dst, a, b); |
757 |
break;
|
758 |
case CC_OP_LSR:
|
759 |
t_gen_lsr(dst, a, b); |
760 |
break;
|
761 |
case CC_OP_ASR:
|
762 |
t_gen_asr(dst, a, b); |
763 |
break;
|
764 |
case CC_OP_NEG:
|
765 |
tcg_gen_neg_tl(dst, b); |
766 |
/* Extended arithmetics. */
|
767 |
t_gen_subx_carry(dc, dst); |
768 |
break;
|
769 |
case CC_OP_LZ:
|
770 |
gen_helper_lz(dst, b); |
771 |
break;
|
772 |
case CC_OP_MULS:
|
773 |
t_gen_muls(dst, cpu_PR[PR_MOF], a, b); |
774 |
break;
|
775 |
case CC_OP_MULU:
|
776 |
t_gen_mulu(dst, cpu_PR[PR_MOF], a, b); |
777 |
break;
|
778 |
case CC_OP_DSTEP:
|
779 |
t_gen_cris_dstep(dst, a, b); |
780 |
break;
|
781 |
case CC_OP_BOUND:
|
782 |
{ |
783 |
int l1;
|
784 |
l1 = gen_new_label(); |
785 |
tcg_gen_mov_tl(dst, a); |
786 |
tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1); |
787 |
tcg_gen_mov_tl(dst, b); |
788 |
gen_set_label(l1); |
789 |
} |
790 |
break;
|
791 |
case CC_OP_CMP:
|
792 |
tcg_gen_sub_tl(dst, a, b); |
793 |
/* Extended arithmetics. */
|
794 |
t_gen_subx_carry(dc, dst); |
795 |
break;
|
796 |
default:
|
797 |
qemu_log("illegal ALU op.\n");
|
798 |
BUG(); |
799 |
break;
|
800 |
} |
801 |
|
802 |
if (size == 1) |
803 |
tcg_gen_andi_tl(dst, dst, 0xff);
|
804 |
else if (size == 2) |
805 |
tcg_gen_andi_tl(dst, dst, 0xffff);
|
806 |
} |
807 |
|
808 |
static void cris_alu(DisasContext *dc, int op, |
809 |
TCGv d, TCGv op_a, TCGv op_b, int size)
|
810 |
{ |
811 |
TCGv tmp; |
812 |
int writeback;
|
813 |
|
814 |
writeback = 1;
|
815 |
|
816 |
if (op == CC_OP_CMP) {
|
817 |
tmp = tcg_temp_new(); |
818 |
writeback = 0;
|
819 |
} else if (size == 4) { |
820 |
tmp = d; |
821 |
writeback = 0;
|
822 |
} else
|
823 |
tmp = tcg_temp_new(); |
824 |
|
825 |
|
826 |
cris_pre_alu_update_cc(dc, op, op_a, op_b, size); |
827 |
cris_alu_op_exec(dc, op, tmp, op_a, op_b, size); |
828 |
cris_update_result(dc, tmp); |
829 |
|
830 |
/* Writeback. */
|
831 |
if (writeback) {
|
832 |
if (size == 1) |
833 |
tcg_gen_andi_tl(d, d, ~0xff);
|
834 |
else
|
835 |
tcg_gen_andi_tl(d, d, ~0xffff);
|
836 |
tcg_gen_or_tl(d, d, tmp); |
837 |
} |
838 |
if (!TCGV_EQUAL(tmp, d))
|
839 |
tcg_temp_free(tmp); |
840 |
} |
841 |
|
842 |
static int arith_cc(DisasContext *dc) |
843 |
{ |
844 |
if (dc->update_cc) {
|
845 |
switch (dc->cc_op) {
|
846 |
case CC_OP_ADDC: return 1; |
847 |
case CC_OP_ADD: return 1; |
848 |
case CC_OP_SUB: return 1; |
849 |
case CC_OP_DSTEP: return 1; |
850 |
case CC_OP_LSL: return 1; |
851 |
case CC_OP_LSR: return 1; |
852 |
case CC_OP_ASR: return 1; |
853 |
case CC_OP_CMP: return 1; |
854 |
case CC_OP_NEG: return 1; |
855 |
case CC_OP_OR: return 1; |
856 |
case CC_OP_AND: return 1; |
857 |
case CC_OP_XOR: return 1; |
858 |
case CC_OP_MULU: return 1; |
859 |
case CC_OP_MULS: return 1; |
860 |
default:
|
861 |
return 0; |
862 |
} |
863 |
} |
864 |
return 0; |
865 |
} |
866 |
|
867 |
static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond) |
868 |
{ |
869 |
int arith_opt, move_opt;
|
870 |
|
871 |
/* TODO: optimize more condition codes. */
|
872 |
|
873 |
/*
|
874 |
* If the flags are live, we've gotta look into the bits of CCS.
|
875 |
* Otherwise, if we just did an arithmetic operation we try to
|
876 |
* evaluate the condition code faster.
|
877 |
*
|
878 |
* When this function is done, T0 should be non-zero if the condition
|
879 |
* code is true.
|
880 |
*/
|
881 |
arith_opt = arith_cc(dc) && !dc->flags_uptodate; |
882 |
move_opt = (dc->cc_op == CC_OP_MOVE); |
883 |
switch (cond) {
|
884 |
case CC_EQ:
|
885 |
if (arith_opt || move_opt) {
|
886 |
/* If cc_result is zero, T0 should be
|
887 |
non-zero otherwise T0 should be zero. */
|
888 |
int l1;
|
889 |
l1 = gen_new_label(); |
890 |
tcg_gen_movi_tl(cc, 0);
|
891 |
tcg_gen_brcondi_tl(TCG_COND_NE, cc_result, |
892 |
0, l1);
|
893 |
tcg_gen_movi_tl(cc, 1);
|
894 |
gen_set_label(l1); |
895 |
} |
896 |
else {
|
897 |
cris_evaluate_flags(dc); |
898 |
tcg_gen_andi_tl(cc, |
899 |
cpu_PR[PR_CCS], Z_FLAG); |
900 |
} |
901 |
break;
|
902 |
case CC_NE:
|
903 |
if (arith_opt || move_opt)
|
904 |
tcg_gen_mov_tl(cc, cc_result); |
905 |
else {
|
906 |
cris_evaluate_flags(dc); |
907 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], |
908 |
Z_FLAG); |
909 |
tcg_gen_andi_tl(cc, cc, Z_FLAG); |
910 |
} |
911 |
break;
|
912 |
case CC_CS:
|
913 |
cris_evaluate_flags(dc); |
914 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG); |
915 |
break;
|
916 |
case CC_CC:
|
917 |
cris_evaluate_flags(dc); |
918 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG); |
919 |
tcg_gen_andi_tl(cc, cc, C_FLAG); |
920 |
break;
|
921 |
case CC_VS:
|
922 |
cris_evaluate_flags(dc); |
923 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG); |
924 |
break;
|
925 |
case CC_VC:
|
926 |
cris_evaluate_flags(dc); |
927 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], |
928 |
V_FLAG); |
929 |
tcg_gen_andi_tl(cc, cc, V_FLAG); |
930 |
break;
|
931 |
case CC_PL:
|
932 |
if (arith_opt || move_opt) {
|
933 |
int bits = 31; |
934 |
|
935 |
if (dc->cc_size == 1) |
936 |
bits = 7;
|
937 |
else if (dc->cc_size == 2) |
938 |
bits = 15;
|
939 |
|
940 |
tcg_gen_shri_tl(cc, cc_result, bits); |
941 |
tcg_gen_xori_tl(cc, cc, 1);
|
942 |
} else {
|
943 |
cris_evaluate_flags(dc); |
944 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], |
945 |
N_FLAG); |
946 |
tcg_gen_andi_tl(cc, cc, N_FLAG); |
947 |
} |
948 |
break;
|
949 |
case CC_MI:
|
950 |
if (arith_opt || move_opt) {
|
951 |
int bits = 31; |
952 |
|
953 |
if (dc->cc_size == 1) |
954 |
bits = 7;
|
955 |
else if (dc->cc_size == 2) |
956 |
bits = 15;
|
957 |
|
958 |
tcg_gen_shri_tl(cc, cc_result, bits); |
959 |
tcg_gen_andi_tl(cc, cc, 1);
|
960 |
} |
961 |
else {
|
962 |
cris_evaluate_flags(dc); |
963 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], |
964 |
N_FLAG); |
965 |
} |
966 |
break;
|
967 |
case CC_LS:
|
968 |
cris_evaluate_flags(dc); |
969 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], |
970 |
C_FLAG | Z_FLAG); |
971 |
break;
|
972 |
case CC_HI:
|
973 |
cris_evaluate_flags(dc); |
974 |
{ |
975 |
TCGv tmp; |
976 |
|
977 |
tmp = tcg_temp_new(); |
978 |
tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS], |
979 |
C_FLAG | Z_FLAG); |
980 |
/* Overlay the C flag on top of the Z. */
|
981 |
tcg_gen_shli_tl(cc, tmp, 2);
|
982 |
tcg_gen_and_tl(cc, tmp, cc); |
983 |
tcg_gen_andi_tl(cc, cc, Z_FLAG); |
984 |
|
985 |
tcg_temp_free(tmp); |
986 |
} |
987 |
break;
|
988 |
case CC_GE:
|
989 |
cris_evaluate_flags(dc); |
990 |
/* Overlay the V flag on top of the N. */
|
991 |
tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
|
992 |
tcg_gen_xor_tl(cc, |
993 |
cpu_PR[PR_CCS], cc); |
994 |
tcg_gen_andi_tl(cc, cc, N_FLAG); |
995 |
tcg_gen_xori_tl(cc, cc, N_FLAG); |
996 |
break;
|
997 |
case CC_LT:
|
998 |
cris_evaluate_flags(dc); |
999 |
/* Overlay the V flag on top of the N. */
|
1000 |
tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
|
1001 |
tcg_gen_xor_tl(cc, |
1002 |
cpu_PR[PR_CCS], cc); |
1003 |
tcg_gen_andi_tl(cc, cc, N_FLAG); |
1004 |
break;
|
1005 |
case CC_GT:
|
1006 |
cris_evaluate_flags(dc); |
1007 |
{ |
1008 |
TCGv n, z; |
1009 |
|
1010 |
n = tcg_temp_new(); |
1011 |
z = tcg_temp_new(); |
1012 |
|
1013 |
/* To avoid a shift we overlay everything on
|
1014 |
the V flag. */
|
1015 |
tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
|
1016 |
tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
|
1017 |
/* invert Z. */
|
1018 |
tcg_gen_xori_tl(z, z, 2);
|
1019 |
|
1020 |
tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); |
1021 |
tcg_gen_xori_tl(n, n, 2);
|
1022 |
tcg_gen_and_tl(cc, z, n); |
1023 |
tcg_gen_andi_tl(cc, cc, 2);
|
1024 |
|
1025 |
tcg_temp_free(n); |
1026 |
tcg_temp_free(z); |
1027 |
} |
1028 |
break;
|
1029 |
case CC_LE:
|
1030 |
cris_evaluate_flags(dc); |
1031 |
{ |
1032 |
TCGv n, z; |
1033 |
|
1034 |
n = tcg_temp_new(); |
1035 |
z = tcg_temp_new(); |
1036 |
|
1037 |
/* To avoid a shift we overlay everything on
|
1038 |
the V flag. */
|
1039 |
tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
|
1040 |
tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
|
1041 |
|
1042 |
tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); |
1043 |
tcg_gen_or_tl(cc, z, n); |
1044 |
tcg_gen_andi_tl(cc, cc, 2);
|
1045 |
|
1046 |
tcg_temp_free(n); |
1047 |
tcg_temp_free(z); |
1048 |
} |
1049 |
break;
|
1050 |
case CC_P:
|
1051 |
cris_evaluate_flags(dc); |
1052 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG); |
1053 |
break;
|
1054 |
case CC_A:
|
1055 |
tcg_gen_movi_tl(cc, 1);
|
1056 |
break;
|
1057 |
default:
|
1058 |
BUG(); |
1059 |
break;
|
1060 |
}; |
1061 |
} |
1062 |
|
1063 |
static void cris_store_direct_jmp(DisasContext *dc) |
1064 |
{ |
1065 |
/* Store the direct jmp state into the cpu-state. */
|
1066 |
if (dc->jmp == JMP_DIRECT) {
|
1067 |
tcg_gen_movi_tl(env_btarget, dc->jmp_pc); |
1068 |
tcg_gen_movi_tl(env_btaken, 1);
|
1069 |
} |
1070 |
} |
1071 |
|
1072 |
static void cris_prepare_cc_branch (DisasContext *dc, |
1073 |
int offset, int cond) |
1074 |
{ |
1075 |
/* This helps us re-schedule the micro-code to insns in delay-slots
|
1076 |
before the actual jump. */
|
1077 |
dc->delayed_branch = 2;
|
1078 |
dc->jmp_pc = dc->pc + offset; |
1079 |
|
1080 |
if (cond != CC_A)
|
1081 |
{ |
1082 |
dc->jmp = JMP_INDIRECT; |
1083 |
gen_tst_cc (dc, env_btaken, cond); |
1084 |
tcg_gen_movi_tl(env_btarget, dc->jmp_pc); |
1085 |
} else {
|
1086 |
/* Allow chaining. */
|
1087 |
dc->jmp = JMP_DIRECT; |
1088 |
} |
1089 |
} |
1090 |
|
1091 |
|
1092 |
/* jumps, when the dest is in a live reg for example. Direct should be set
|
1093 |
when the dest addr is constant to allow tb chaining. */
|
1094 |
static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type) |
1095 |
{ |
1096 |
/* This helps us re-schedule the micro-code to insns in delay-slots
|
1097 |
before the actual jump. */
|
1098 |
dc->delayed_branch = 2;
|
1099 |
dc->jmp = type; |
1100 |
if (type == JMP_INDIRECT)
|
1101 |
tcg_gen_movi_tl(env_btaken, 1);
|
1102 |
} |
1103 |
|
1104 |
static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr) |
1105 |
{ |
1106 |
int mem_index = cpu_mmu_index(dc->env);
|
1107 |
|
1108 |
/* If we get a fault on a delayslot we must keep the jmp state in
|
1109 |
the cpu-state to be able to re-execute the jmp. */
|
1110 |
if (dc->delayed_branch == 1) |
1111 |
cris_store_direct_jmp(dc); |
1112 |
|
1113 |
tcg_gen_qemu_ld64(dst, addr, mem_index); |
1114 |
} |
1115 |
|
1116 |
static void gen_load(DisasContext *dc, TCGv dst, TCGv addr, |
1117 |
unsigned int size, int sign) |
1118 |
{ |
1119 |
int mem_index = cpu_mmu_index(dc->env);
|
1120 |
|
1121 |
/* If we get a fault on a delayslot we must keep the jmp state in
|
1122 |
the cpu-state to be able to re-execute the jmp. */
|
1123 |
if (dc->delayed_branch == 1) |
1124 |
cris_store_direct_jmp(dc); |
1125 |
|
1126 |
if (size == 1) { |
1127 |
if (sign)
|
1128 |
tcg_gen_qemu_ld8s(dst, addr, mem_index); |
1129 |
else
|
1130 |
tcg_gen_qemu_ld8u(dst, addr, mem_index); |
1131 |
} |
1132 |
else if (size == 2) { |
1133 |
if (sign)
|
1134 |
tcg_gen_qemu_ld16s(dst, addr, mem_index); |
1135 |
else
|
1136 |
tcg_gen_qemu_ld16u(dst, addr, mem_index); |
1137 |
} |
1138 |
else if (size == 4) { |
1139 |
tcg_gen_qemu_ld32u(dst, addr, mem_index); |
1140 |
} |
1141 |
else {
|
1142 |
abort(); |
1143 |
} |
1144 |
} |
1145 |
|
1146 |
static void gen_store (DisasContext *dc, TCGv addr, TCGv val, |
1147 |
unsigned int size) |
1148 |
{ |
1149 |
int mem_index = cpu_mmu_index(dc->env);
|
1150 |
|
1151 |
/* If we get a fault on a delayslot we must keep the jmp state in
|
1152 |
the cpu-state to be able to re-execute the jmp. */
|
1153 |
if (dc->delayed_branch == 1) |
1154 |
cris_store_direct_jmp(dc); |
1155 |
|
1156 |
|
1157 |
/* Conditional writes. We only support the kind were X and P are known
|
1158 |
at translation time. */
|
1159 |
if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
|
1160 |
dc->postinc = 0;
|
1161 |
cris_evaluate_flags(dc); |
1162 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG); |
1163 |
return;
|
1164 |
} |
1165 |
|
1166 |
if (size == 1) |
1167 |
tcg_gen_qemu_st8(val, addr, mem_index); |
1168 |
else if (size == 2) |
1169 |
tcg_gen_qemu_st16(val, addr, mem_index); |
1170 |
else
|
1171 |
tcg_gen_qemu_st32(val, addr, mem_index); |
1172 |
|
1173 |
if (dc->flagx_known && dc->flags_x) {
|
1174 |
cris_evaluate_flags(dc); |
1175 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG); |
1176 |
} |
1177 |
} |
1178 |
|
1179 |
static inline void t_gen_sext(TCGv d, TCGv s, int size) |
1180 |
{ |
1181 |
if (size == 1) |
1182 |
tcg_gen_ext8s_i32(d, s); |
1183 |
else if (size == 2) |
1184 |
tcg_gen_ext16s_i32(d, s); |
1185 |
else if(!TCGV_EQUAL(d, s)) |
1186 |
tcg_gen_mov_tl(d, s); |
1187 |
} |
1188 |
|
1189 |
static inline void t_gen_zext(TCGv d, TCGv s, int size) |
1190 |
{ |
1191 |
if (size == 1) |
1192 |
tcg_gen_ext8u_i32(d, s); |
1193 |
else if (size == 2) |
1194 |
tcg_gen_ext16u_i32(d, s); |
1195 |
else if (!TCGV_EQUAL(d, s)) |
1196 |
tcg_gen_mov_tl(d, s); |
1197 |
} |
1198 |
|
1199 |
#if DISAS_CRIS
|
1200 |
static char memsize_char(int size) |
1201 |
{ |
1202 |
switch (size)
|
1203 |
{ |
1204 |
case 1: return 'b'; break; |
1205 |
case 2: return 'w'; break; |
1206 |
case 4: return 'd'; break; |
1207 |
default:
|
1208 |
return 'x'; |
1209 |
break;
|
1210 |
} |
1211 |
} |
1212 |
#endif
|
1213 |
|
1214 |
static inline unsigned int memsize_z(DisasContext *dc) |
1215 |
{ |
1216 |
return dc->zsize + 1; |
1217 |
} |
1218 |
|
1219 |
static inline unsigned int memsize_zz(DisasContext *dc) |
1220 |
{ |
1221 |
switch (dc->zzsize)
|
1222 |
{ |
1223 |
case 0: return 1; |
1224 |
case 1: return 2; |
1225 |
default:
|
1226 |
return 4; |
1227 |
} |
1228 |
} |
1229 |
|
1230 |
static inline void do_postinc (DisasContext *dc, int size) |
1231 |
{ |
1232 |
if (dc->postinc)
|
1233 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size); |
1234 |
} |
1235 |
|
1236 |
static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd, |
1237 |
int size, int s_ext, TCGv dst) |
1238 |
{ |
1239 |
if (s_ext)
|
1240 |
t_gen_sext(dst, cpu_R[rs], size); |
1241 |
else
|
1242 |
t_gen_zext(dst, cpu_R[rs], size); |
1243 |
} |
1244 |
|
1245 |
/* Prepare T0 and T1 for a register alu operation.
|
1246 |
s_ext decides if the operand1 should be sign-extended or zero-extended when
|
1247 |
needed. */
|
1248 |
static void dec_prep_alu_r(DisasContext *dc, int rs, int rd, |
1249 |
int size, int s_ext, TCGv dst, TCGv src) |
1250 |
{ |
1251 |
dec_prep_move_r(dc, rs, rd, size, s_ext, src); |
1252 |
|
1253 |
if (s_ext)
|
1254 |
t_gen_sext(dst, cpu_R[rd], size); |
1255 |
else
|
1256 |
t_gen_zext(dst, cpu_R[rd], size); |
1257 |
} |
1258 |
|
1259 |
static int dec_prep_move_m(DisasContext *dc, int s_ext, int memsize, |
1260 |
TCGv dst) |
1261 |
{ |
1262 |
unsigned int rs, rd; |
1263 |
uint32_t imm; |
1264 |
int is_imm;
|
1265 |
int insn_len = 2; |
1266 |
|
1267 |
rs = dc->op1; |
1268 |
rd = dc->op2; |
1269 |
is_imm = rs == 15 && dc->postinc;
|
1270 |
|
1271 |
/* Load [$rs] onto T1. */
|
1272 |
if (is_imm) {
|
1273 |
insn_len = 2 + memsize;
|
1274 |
if (memsize == 1) |
1275 |
insn_len++; |
1276 |
|
1277 |
if (memsize != 4) { |
1278 |
if (s_ext) {
|
1279 |
if (memsize == 1) |
1280 |
imm = ldsb_code(dc->pc + 2);
|
1281 |
else
|
1282 |
imm = ldsw_code(dc->pc + 2);
|
1283 |
} else {
|
1284 |
if (memsize == 1) |
1285 |
imm = ldub_code(dc->pc + 2);
|
1286 |
else
|
1287 |
imm = lduw_code(dc->pc + 2);
|
1288 |
} |
1289 |
} else
|
1290 |
imm = ldl_code(dc->pc + 2);
|
1291 |
|
1292 |
tcg_gen_movi_tl(dst, imm); |
1293 |
dc->postinc = 0;
|
1294 |
} else {
|
1295 |
cris_flush_cc_state(dc); |
1296 |
gen_load(dc, dst, cpu_R[rs], memsize, 0);
|
1297 |
if (s_ext)
|
1298 |
t_gen_sext(dst, dst, memsize); |
1299 |
else
|
1300 |
t_gen_zext(dst, dst, memsize); |
1301 |
} |
1302 |
return insn_len;
|
1303 |
} |
1304 |
|
1305 |
/* Prepare T0 and T1 for a memory + alu operation.
|
1306 |
s_ext decides if the operand1 should be sign-extended or zero-extended when
|
1307 |
needed. */
|
1308 |
static int dec_prep_alu_m(DisasContext *dc, int s_ext, int memsize, |
1309 |
TCGv dst, TCGv src) |
1310 |
{ |
1311 |
int insn_len;
|
1312 |
|
1313 |
insn_len = dec_prep_move_m(dc, s_ext, memsize, src); |
1314 |
tcg_gen_mov_tl(dst, cpu_R[dc->op2]); |
1315 |
return insn_len;
|
1316 |
} |
1317 |
|
1318 |
#if DISAS_CRIS
|
1319 |
static const char *cc_name(int cc) |
1320 |
{ |
1321 |
static const char *cc_names[16] = { |
1322 |
"cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi", |
1323 |
"ls", "hi", "ge", "lt", "gt", "le", "a", "p" |
1324 |
}; |
1325 |
assert(cc < 16);
|
1326 |
return cc_names[cc];
|
1327 |
} |
1328 |
#endif
|
1329 |
|
1330 |
/* Start of insn decoders. */
|
1331 |
|
1332 |
static unsigned int dec_bccq(DisasContext *dc) |
1333 |
{ |
1334 |
int32_t offset; |
1335 |
int sign;
|
1336 |
uint32_t cond = dc->op2; |
1337 |
int tmp;
|
1338 |
|
1339 |
offset = EXTRACT_FIELD (dc->ir, 1, 7); |
1340 |
sign = EXTRACT_FIELD(dc->ir, 0, 0); |
1341 |
|
1342 |
offset *= 2;
|
1343 |
offset |= sign << 8;
|
1344 |
tmp = offset; |
1345 |
offset = sign_extend(offset, 8);
|
1346 |
|
1347 |
LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset);
|
1348 |
|
1349 |
/* op2 holds the condition-code. */
|
1350 |
cris_cc_mask(dc, 0);
|
1351 |
cris_prepare_cc_branch (dc, offset, cond); |
1352 |
return 2; |
1353 |
} |
1354 |
static unsigned int dec_addoq(DisasContext *dc) |
1355 |
{ |
1356 |
int32_t imm; |
1357 |
|
1358 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7); |
1359 |
imm = sign_extend(dc->op1, 7);
|
1360 |
|
1361 |
LOG_DIS("addoq %d, $r%u\n", imm, dc->op2);
|
1362 |
cris_cc_mask(dc, 0);
|
1363 |
/* Fetch register operand, */
|
1364 |
tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm); |
1365 |
|
1366 |
return 2; |
1367 |
} |
1368 |
static unsigned int dec_addq(DisasContext *dc) |
1369 |
{ |
1370 |
LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2);
|
1371 |
|
1372 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
1373 |
|
1374 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1375 |
|
1376 |
cris_alu(dc, CC_OP_ADD, |
1377 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
|
1378 |
return 2; |
1379 |
} |
1380 |
static unsigned int dec_moveq(DisasContext *dc) |
1381 |
{ |
1382 |
uint32_t imm; |
1383 |
|
1384 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
1385 |
imm = sign_extend(dc->op1, 5);
|
1386 |
LOG_DIS("moveq %d, $r%u\n", imm, dc->op2);
|
1387 |
|
1388 |
tcg_gen_mov_tl(cpu_R[dc->op2], tcg_const_tl(imm)); |
1389 |
return 2; |
1390 |
} |
1391 |
static unsigned int dec_subq(DisasContext *dc) |
1392 |
{ |
1393 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
1394 |
|
1395 |
LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2);
|
1396 |
|
1397 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1398 |
cris_alu(dc, CC_OP_SUB, |
1399 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
|
1400 |
return 2; |
1401 |
} |
1402 |
static unsigned int dec_cmpq(DisasContext *dc) |
1403 |
{ |
1404 |
uint32_t imm; |
1405 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
1406 |
imm = sign_extend(dc->op1, 5);
|
1407 |
|
1408 |
LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2);
|
1409 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1410 |
|
1411 |
cris_alu(dc, CC_OP_CMP, |
1412 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
|
1413 |
return 2; |
1414 |
} |
1415 |
static unsigned int dec_andq(DisasContext *dc) |
1416 |
{ |
1417 |
uint32_t imm; |
1418 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
1419 |
imm = sign_extend(dc->op1, 5);
|
1420 |
|
1421 |
LOG_DIS("andq %d, $r%d\n", imm, dc->op2);
|
1422 |
cris_cc_mask(dc, CC_MASK_NZ); |
1423 |
|
1424 |
cris_alu(dc, CC_OP_AND, |
1425 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
|
1426 |
return 2; |
1427 |
} |
1428 |
static unsigned int dec_orq(DisasContext *dc) |
1429 |
{ |
1430 |
uint32_t imm; |
1431 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
1432 |
imm = sign_extend(dc->op1, 5);
|
1433 |
LOG_DIS("orq %d, $r%d\n", imm, dc->op2);
|
1434 |
cris_cc_mask(dc, CC_MASK_NZ); |
1435 |
|
1436 |
cris_alu(dc, CC_OP_OR, |
1437 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
|
1438 |
return 2; |
1439 |
} |
1440 |
static unsigned int dec_btstq(DisasContext *dc) |
1441 |
{ |
1442 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
1443 |
LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2);
|
1444 |
|
1445 |
cris_cc_mask(dc, CC_MASK_NZ); |
1446 |
cris_evaluate_flags(dc); |
1447 |
gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->op2], |
1448 |
tcg_const_tl(dc->op1), cpu_PR[PR_CCS]); |
1449 |
cris_alu(dc, CC_OP_MOVE, |
1450 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
1451 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
1452 |
dc->flags_uptodate = 1;
|
1453 |
return 2; |
1454 |
} |
1455 |
static unsigned int dec_asrq(DisasContext *dc) |
1456 |
{ |
1457 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
1458 |
LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2);
|
1459 |
cris_cc_mask(dc, CC_MASK_NZ); |
1460 |
|
1461 |
tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); |
1462 |
cris_alu(dc, CC_OP_MOVE, |
1463 |
cpu_R[dc->op2], |
1464 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
1465 |
return 2; |
1466 |
} |
1467 |
static unsigned int dec_lslq(DisasContext *dc) |
1468 |
{ |
1469 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
1470 |
LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2);
|
1471 |
|
1472 |
cris_cc_mask(dc, CC_MASK_NZ); |
1473 |
|
1474 |
tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); |
1475 |
|
1476 |
cris_alu(dc, CC_OP_MOVE, |
1477 |
cpu_R[dc->op2], |
1478 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
1479 |
return 2; |
1480 |
} |
1481 |
static unsigned int dec_lsrq(DisasContext *dc) |
1482 |
{ |
1483 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
1484 |
LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2);
|
1485 |
|
1486 |
cris_cc_mask(dc, CC_MASK_NZ); |
1487 |
|
1488 |
tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); |
1489 |
cris_alu(dc, CC_OP_MOVE, |
1490 |
cpu_R[dc->op2], |
1491 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
1492 |
return 2; |
1493 |
} |
1494 |
|
1495 |
static unsigned int dec_move_r(DisasContext *dc) |
1496 |
{ |
1497 |
int size = memsize_zz(dc);
|
1498 |
|
1499 |
LOG_DIS("move.%c $r%u, $r%u\n",
|
1500 |
memsize_char(size), dc->op1, dc->op2); |
1501 |
|
1502 |
cris_cc_mask(dc, CC_MASK_NZ); |
1503 |
if (size == 4) { |
1504 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
|
1505 |
cris_cc_mask(dc, CC_MASK_NZ); |
1506 |
cris_update_cc_op(dc, CC_OP_MOVE, 4);
|
1507 |
cris_update_cc_x(dc); |
1508 |
cris_update_result(dc, cpu_R[dc->op2]); |
1509 |
} |
1510 |
else {
|
1511 |
TCGv t0; |
1512 |
|
1513 |
t0 = tcg_temp_new(); |
1514 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
|
1515 |
cris_alu(dc, CC_OP_MOVE, |
1516 |
cpu_R[dc->op2], |
1517 |
cpu_R[dc->op2], t0, size); |
1518 |
tcg_temp_free(t0); |
1519 |
} |
1520 |
return 2; |
1521 |
} |
1522 |
|
1523 |
static unsigned int dec_scc_r(DisasContext *dc) |
1524 |
{ |
1525 |
int cond = dc->op2;
|
1526 |
|
1527 |
LOG_DIS("s%s $r%u\n",
|
1528 |
cc_name(cond), dc->op1); |
1529 |
|
1530 |
if (cond != CC_A)
|
1531 |
{ |
1532 |
int l1;
|
1533 |
|
1534 |
gen_tst_cc (dc, cpu_R[dc->op1], cond); |
1535 |
l1 = gen_new_label(); |
1536 |
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
|
1537 |
tcg_gen_movi_tl(cpu_R[dc->op1], 1);
|
1538 |
gen_set_label(l1); |
1539 |
} |
1540 |
else
|
1541 |
tcg_gen_movi_tl(cpu_R[dc->op1], 1);
|
1542 |
|
1543 |
cris_cc_mask(dc, 0);
|
1544 |
return 2; |
1545 |
} |
1546 |
|
1547 |
static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t) |
1548 |
{ |
1549 |
if (size == 4) { |
1550 |
t[0] = cpu_R[dc->op2];
|
1551 |
t[1] = cpu_R[dc->op1];
|
1552 |
} else {
|
1553 |
t[0] = tcg_temp_new();
|
1554 |
t[1] = tcg_temp_new();
|
1555 |
} |
1556 |
} |
1557 |
|
1558 |
static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t) |
1559 |
{ |
1560 |
if (size != 4) { |
1561 |
tcg_temp_free(t[0]);
|
1562 |
tcg_temp_free(t[1]);
|
1563 |
} |
1564 |
} |
1565 |
|
1566 |
static unsigned int dec_and_r(DisasContext *dc) |
1567 |
{ |
1568 |
TCGv t[2];
|
1569 |
int size = memsize_zz(dc);
|
1570 |
|
1571 |
LOG_DIS("and.%c $r%u, $r%u\n",
|
1572 |
memsize_char(size), dc->op1, dc->op2); |
1573 |
|
1574 |
cris_cc_mask(dc, CC_MASK_NZ); |
1575 |
|
1576 |
cris_alu_alloc_temps(dc, size, t); |
1577 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1578 |
cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size); |
1579 |
cris_alu_free_temps(dc, size, t); |
1580 |
return 2; |
1581 |
} |
1582 |
|
1583 |
static unsigned int dec_lz_r(DisasContext *dc) |
1584 |
{ |
1585 |
TCGv t0; |
1586 |
LOG_DIS("lz $r%u, $r%u\n",
|
1587 |
dc->op1, dc->op2); |
1588 |
cris_cc_mask(dc, CC_MASK_NZ); |
1589 |
t0 = tcg_temp_new(); |
1590 |
dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0); |
1591 |
cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
1592 |
tcg_temp_free(t0); |
1593 |
return 2; |
1594 |
} |
1595 |
|
1596 |
static unsigned int dec_lsl_r(DisasContext *dc) |
1597 |
{ |
1598 |
TCGv t[2];
|
1599 |
int size = memsize_zz(dc);
|
1600 |
|
1601 |
LOG_DIS("lsl.%c $r%u, $r%u\n",
|
1602 |
memsize_char(size), dc->op1, dc->op2); |
1603 |
|
1604 |
cris_cc_mask(dc, CC_MASK_NZ); |
1605 |
cris_alu_alloc_temps(dc, size, t); |
1606 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1607 |
tcg_gen_andi_tl(t[1], t[1], 63); |
1608 |
cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size); |
1609 |
cris_alu_alloc_temps(dc, size, t); |
1610 |
return 2; |
1611 |
} |
1612 |
|
1613 |
static unsigned int dec_lsr_r(DisasContext *dc) |
1614 |
{ |
1615 |
TCGv t[2];
|
1616 |
int size = memsize_zz(dc);
|
1617 |
|
1618 |
LOG_DIS("lsr.%c $r%u, $r%u\n",
|
1619 |
memsize_char(size), dc->op1, dc->op2); |
1620 |
|
1621 |
cris_cc_mask(dc, CC_MASK_NZ); |
1622 |
cris_alu_alloc_temps(dc, size, t); |
1623 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1624 |
tcg_gen_andi_tl(t[1], t[1], 63); |
1625 |
cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size); |
1626 |
cris_alu_free_temps(dc, size, t); |
1627 |
return 2; |
1628 |
} |
1629 |
|
1630 |
static unsigned int dec_asr_r(DisasContext *dc) |
1631 |
{ |
1632 |
TCGv t[2];
|
1633 |
int size = memsize_zz(dc);
|
1634 |
|
1635 |
LOG_DIS("asr.%c $r%u, $r%u\n",
|
1636 |
memsize_char(size), dc->op1, dc->op2); |
1637 |
|
1638 |
cris_cc_mask(dc, CC_MASK_NZ); |
1639 |
cris_alu_alloc_temps(dc, size, t); |
1640 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); |
1641 |
tcg_gen_andi_tl(t[1], t[1], 63); |
1642 |
cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size); |
1643 |
cris_alu_free_temps(dc, size, t); |
1644 |
return 2; |
1645 |
} |
1646 |
|
1647 |
static unsigned int dec_muls_r(DisasContext *dc) |
1648 |
{ |
1649 |
TCGv t[2];
|
1650 |
int size = memsize_zz(dc);
|
1651 |
|
1652 |
LOG_DIS("muls.%c $r%u, $r%u\n",
|
1653 |
memsize_char(size), dc->op1, dc->op2); |
1654 |
cris_cc_mask(dc, CC_MASK_NZV); |
1655 |
cris_alu_alloc_temps(dc, size, t); |
1656 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); |
1657 |
|
1658 |
cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4); |
1659 |
cris_alu_free_temps(dc, size, t); |
1660 |
return 2; |
1661 |
} |
1662 |
|
1663 |
static unsigned int dec_mulu_r(DisasContext *dc) |
1664 |
{ |
1665 |
TCGv t[2];
|
1666 |
int size = memsize_zz(dc);
|
1667 |
|
1668 |
LOG_DIS("mulu.%c $r%u, $r%u\n",
|
1669 |
memsize_char(size), dc->op1, dc->op2); |
1670 |
cris_cc_mask(dc, CC_MASK_NZV); |
1671 |
cris_alu_alloc_temps(dc, size, t); |
1672 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1673 |
|
1674 |
cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4); |
1675 |
cris_alu_alloc_temps(dc, size, t); |
1676 |
return 2; |
1677 |
} |
1678 |
|
1679 |
|
1680 |
static unsigned int dec_dstep_r(DisasContext *dc) |
1681 |
{ |
1682 |
LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2);
|
1683 |
cris_cc_mask(dc, CC_MASK_NZ); |
1684 |
cris_alu(dc, CC_OP_DSTEP, |
1685 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
|
1686 |
return 2; |
1687 |
} |
1688 |
|
1689 |
static unsigned int dec_xor_r(DisasContext *dc) |
1690 |
{ |
1691 |
TCGv t[2];
|
1692 |
int size = memsize_zz(dc);
|
1693 |
LOG_DIS("xor.%c $r%u, $r%u\n",
|
1694 |
memsize_char(size), dc->op1, dc->op2); |
1695 |
BUG_ON(size != 4); /* xor is dword. */ |
1696 |
cris_cc_mask(dc, CC_MASK_NZ); |
1697 |
cris_alu_alloc_temps(dc, size, t); |
1698 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1699 |
|
1700 |
cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4); |
1701 |
cris_alu_free_temps(dc, size, t); |
1702 |
return 2; |
1703 |
} |
1704 |
|
1705 |
static unsigned int dec_bound_r(DisasContext *dc) |
1706 |
{ |
1707 |
TCGv l0; |
1708 |
int size = memsize_zz(dc);
|
1709 |
LOG_DIS("bound.%c $r%u, $r%u\n",
|
1710 |
memsize_char(size), dc->op1, dc->op2); |
1711 |
cris_cc_mask(dc, CC_MASK_NZ); |
1712 |
l0 = tcg_temp_local_new(); |
1713 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
|
1714 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
|
1715 |
tcg_temp_free(l0); |
1716 |
return 2; |
1717 |
} |
1718 |
|
1719 |
static unsigned int dec_cmp_r(DisasContext *dc) |
1720 |
{ |
1721 |
TCGv t[2];
|
1722 |
int size = memsize_zz(dc);
|
1723 |
LOG_DIS("cmp.%c $r%u, $r%u\n",
|
1724 |
memsize_char(size), dc->op1, dc->op2); |
1725 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1726 |
cris_alu_alloc_temps(dc, size, t); |
1727 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1728 |
|
1729 |
cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size); |
1730 |
cris_alu_free_temps(dc, size, t); |
1731 |
return 2; |
1732 |
} |
1733 |
|
1734 |
static unsigned int dec_abs_r(DisasContext *dc) |
1735 |
{ |
1736 |
TCGv t0; |
1737 |
|
1738 |
LOG_DIS("abs $r%u, $r%u\n",
|
1739 |
dc->op1, dc->op2); |
1740 |
cris_cc_mask(dc, CC_MASK_NZ); |
1741 |
|
1742 |
t0 = tcg_temp_new(); |
1743 |
tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
|
1744 |
tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0); |
1745 |
tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0); |
1746 |
tcg_temp_free(t0); |
1747 |
|
1748 |
cris_alu(dc, CC_OP_MOVE, |
1749 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
1750 |
return 2; |
1751 |
} |
1752 |
|
1753 |
static unsigned int dec_add_r(DisasContext *dc) |
1754 |
{ |
1755 |
TCGv t[2];
|
1756 |
int size = memsize_zz(dc);
|
1757 |
LOG_DIS("add.%c $r%u, $r%u\n",
|
1758 |
memsize_char(size), dc->op1, dc->op2); |
1759 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1760 |
cris_alu_alloc_temps(dc, size, t); |
1761 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1762 |
|
1763 |
cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size); |
1764 |
cris_alu_free_temps(dc, size, t); |
1765 |
return 2; |
1766 |
} |
1767 |
|
1768 |
static unsigned int dec_addc_r(DisasContext *dc) |
1769 |
{ |
1770 |
LOG_DIS("addc $r%u, $r%u\n",
|
1771 |
dc->op1, dc->op2); |
1772 |
cris_evaluate_flags(dc); |
1773 |
/* Set for this insn. */
|
1774 |
dc->flagx_known = 1;
|
1775 |
dc->flags_x = X_FLAG; |
1776 |
|
1777 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1778 |
cris_alu(dc, CC_OP_ADDC, |
1779 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
|
1780 |
return 2; |
1781 |
} |
1782 |
|
1783 |
static unsigned int dec_mcp_r(DisasContext *dc) |
1784 |
{ |
1785 |
LOG_DIS("mcp $p%u, $r%u\n",
|
1786 |
dc->op2, dc->op1); |
1787 |
cris_evaluate_flags(dc); |
1788 |
cris_cc_mask(dc, CC_MASK_RNZV); |
1789 |
cris_alu(dc, CC_OP_MCP, |
1790 |
cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
|
1791 |
return 2; |
1792 |
} |
1793 |
|
1794 |
#if DISAS_CRIS
|
1795 |
static char * swapmode_name(int mode, char *modename) { |
1796 |
int i = 0; |
1797 |
if (mode & 8) |
1798 |
modename[i++] = 'n';
|
1799 |
if (mode & 4) |
1800 |
modename[i++] = 'w';
|
1801 |
if (mode & 2) |
1802 |
modename[i++] = 'b';
|
1803 |
if (mode & 1) |
1804 |
modename[i++] = 'r';
|
1805 |
modename[i++] = 0;
|
1806 |
return modename;
|
1807 |
} |
1808 |
#endif
|
1809 |
|
1810 |
static unsigned int dec_swap_r(DisasContext *dc) |
1811 |
{ |
1812 |
TCGv t0; |
1813 |
#if DISAS_CRIS
|
1814 |
char modename[4]; |
1815 |
#endif
|
1816 |
LOG_DIS("swap%s $r%u\n",
|
1817 |
swapmode_name(dc->op2, modename), dc->op1); |
1818 |
|
1819 |
cris_cc_mask(dc, CC_MASK_NZ); |
1820 |
t0 = tcg_temp_new(); |
1821 |
t_gen_mov_TN_reg(t0, dc->op1); |
1822 |
if (dc->op2 & 8) |
1823 |
tcg_gen_not_tl(t0, t0); |
1824 |
if (dc->op2 & 4) |
1825 |
t_gen_swapw(t0, t0); |
1826 |
if (dc->op2 & 2) |
1827 |
t_gen_swapb(t0, t0); |
1828 |
if (dc->op2 & 1) |
1829 |
t_gen_swapr(t0, t0); |
1830 |
cris_alu(dc, CC_OP_MOVE, |
1831 |
cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
|
1832 |
tcg_temp_free(t0); |
1833 |
return 2; |
1834 |
} |
1835 |
|
1836 |
static unsigned int dec_or_r(DisasContext *dc) |
1837 |
{ |
1838 |
TCGv t[2];
|
1839 |
int size = memsize_zz(dc);
|
1840 |
LOG_DIS("or.%c $r%u, $r%u\n",
|
1841 |
memsize_char(size), dc->op1, dc->op2); |
1842 |
cris_cc_mask(dc, CC_MASK_NZ); |
1843 |
cris_alu_alloc_temps(dc, size, t); |
1844 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1845 |
cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size); |
1846 |
cris_alu_free_temps(dc, size, t); |
1847 |
return 2; |
1848 |
} |
1849 |
|
1850 |
static unsigned int dec_addi_r(DisasContext *dc) |
1851 |
{ |
1852 |
TCGv t0; |
1853 |
LOG_DIS("addi.%c $r%u, $r%u\n",
|
1854 |
memsize_char(memsize_zz(dc)), dc->op2, dc->op1); |
1855 |
cris_cc_mask(dc, 0);
|
1856 |
t0 = tcg_temp_new(); |
1857 |
tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); |
1858 |
tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0); |
1859 |
tcg_temp_free(t0); |
1860 |
return 2; |
1861 |
} |
1862 |
|
1863 |
static unsigned int dec_addi_acr(DisasContext *dc) |
1864 |
{ |
1865 |
TCGv t0; |
1866 |
LOG_DIS("addi.%c $r%u, $r%u, $acr\n",
|
1867 |
memsize_char(memsize_zz(dc)), dc->op2, dc->op1); |
1868 |
cris_cc_mask(dc, 0);
|
1869 |
t0 = tcg_temp_new(); |
1870 |
tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); |
1871 |
tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0); |
1872 |
tcg_temp_free(t0); |
1873 |
return 2; |
1874 |
} |
1875 |
|
1876 |
static unsigned int dec_neg_r(DisasContext *dc) |
1877 |
{ |
1878 |
TCGv t[2];
|
1879 |
int size = memsize_zz(dc);
|
1880 |
LOG_DIS("neg.%c $r%u, $r%u\n",
|
1881 |
memsize_char(size), dc->op1, dc->op2); |
1882 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1883 |
cris_alu_alloc_temps(dc, size, t); |
1884 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1885 |
|
1886 |
cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size); |
1887 |
cris_alu_free_temps(dc, size, t); |
1888 |
return 2; |
1889 |
} |
1890 |
|
1891 |
static unsigned int dec_btst_r(DisasContext *dc) |
1892 |
{ |
1893 |
LOG_DIS("btst $r%u, $r%u\n",
|
1894 |
dc->op1, dc->op2); |
1895 |
cris_cc_mask(dc, CC_MASK_NZ); |
1896 |
cris_evaluate_flags(dc); |
1897 |
gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->op2], |
1898 |
cpu_R[dc->op1], cpu_PR[PR_CCS]); |
1899 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], |
1900 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
1901 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
1902 |
dc->flags_uptodate = 1;
|
1903 |
return 2; |
1904 |
} |
1905 |
|
1906 |
static unsigned int dec_sub_r(DisasContext *dc) |
1907 |
{ |
1908 |
TCGv t[2];
|
1909 |
int size = memsize_zz(dc);
|
1910 |
LOG_DIS("sub.%c $r%u, $r%u\n",
|
1911 |
memsize_char(size), dc->op1, dc->op2); |
1912 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1913 |
cris_alu_alloc_temps(dc, size, t); |
1914 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
1915 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size); |
1916 |
cris_alu_free_temps(dc, size, t); |
1917 |
return 2; |
1918 |
} |
1919 |
|
1920 |
/* Zero extension. From size to dword. */
|
1921 |
static unsigned int dec_movu_r(DisasContext *dc) |
1922 |
{ |
1923 |
TCGv t0; |
1924 |
int size = memsize_z(dc);
|
1925 |
LOG_DIS("movu.%c $r%u, $r%u\n",
|
1926 |
memsize_char(size), |
1927 |
dc->op1, dc->op2); |
1928 |
|
1929 |
cris_cc_mask(dc, CC_MASK_NZ); |
1930 |
t0 = tcg_temp_new(); |
1931 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
|
1932 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
1933 |
tcg_temp_free(t0); |
1934 |
return 2; |
1935 |
} |
1936 |
|
1937 |
/* Sign extension. From size to dword. */
|
1938 |
static unsigned int dec_movs_r(DisasContext *dc) |
1939 |
{ |
1940 |
TCGv t0; |
1941 |
int size = memsize_z(dc);
|
1942 |
LOG_DIS("movs.%c $r%u, $r%u\n",
|
1943 |
memsize_char(size), |
1944 |
dc->op1, dc->op2); |
1945 |
|
1946 |
cris_cc_mask(dc, CC_MASK_NZ); |
1947 |
t0 = tcg_temp_new(); |
1948 |
/* Size can only be qi or hi. */
|
1949 |
t_gen_sext(t0, cpu_R[dc->op1], size); |
1950 |
cris_alu(dc, CC_OP_MOVE, |
1951 |
cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
|
1952 |
tcg_temp_free(t0); |
1953 |
return 2; |
1954 |
} |
1955 |
|
1956 |
/* zero extension. From size to dword. */
|
1957 |
static unsigned int dec_addu_r(DisasContext *dc) |
1958 |
{ |
1959 |
TCGv t0; |
1960 |
int size = memsize_z(dc);
|
1961 |
LOG_DIS("addu.%c $r%u, $r%u\n",
|
1962 |
memsize_char(size), |
1963 |
dc->op1, dc->op2); |
1964 |
|
1965 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1966 |
t0 = tcg_temp_new(); |
1967 |
/* Size can only be qi or hi. */
|
1968 |
t_gen_zext(t0, cpu_R[dc->op1], size); |
1969 |
cris_alu(dc, CC_OP_ADD, |
1970 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
1971 |
tcg_temp_free(t0); |
1972 |
return 2; |
1973 |
} |
1974 |
|
1975 |
/* Sign extension. From size to dword. */
|
1976 |
static unsigned int dec_adds_r(DisasContext *dc) |
1977 |
{ |
1978 |
TCGv t0; |
1979 |
int size = memsize_z(dc);
|
1980 |
LOG_DIS("adds.%c $r%u, $r%u\n",
|
1981 |
memsize_char(size), |
1982 |
dc->op1, dc->op2); |
1983 |
|
1984 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1985 |
t0 = tcg_temp_new(); |
1986 |
/* Size can only be qi or hi. */
|
1987 |
t_gen_sext(t0, cpu_R[dc->op1], size); |
1988 |
cris_alu(dc, CC_OP_ADD, |
1989 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
1990 |
tcg_temp_free(t0); |
1991 |
return 2; |
1992 |
} |
1993 |
|
1994 |
/* Zero extension. From size to dword. */
|
1995 |
static unsigned int dec_subu_r(DisasContext *dc) |
1996 |
{ |
1997 |
TCGv t0; |
1998 |
int size = memsize_z(dc);
|
1999 |
LOG_DIS("subu.%c $r%u, $r%u\n",
|
2000 |
memsize_char(size), |
2001 |
dc->op1, dc->op2); |
2002 |
|
2003 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2004 |
t0 = tcg_temp_new(); |
2005 |
/* Size can only be qi or hi. */
|
2006 |
t_gen_zext(t0, cpu_R[dc->op1], size); |
2007 |
cris_alu(dc, CC_OP_SUB, |
2008 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
2009 |
tcg_temp_free(t0); |
2010 |
return 2; |
2011 |
} |
2012 |
|
2013 |
/* Sign extension. From size to dword. */
|
2014 |
static unsigned int dec_subs_r(DisasContext *dc) |
2015 |
{ |
2016 |
TCGv t0; |
2017 |
int size = memsize_z(dc);
|
2018 |
LOG_DIS("subs.%c $r%u, $r%u\n",
|
2019 |
memsize_char(size), |
2020 |
dc->op1, dc->op2); |
2021 |
|
2022 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2023 |
t0 = tcg_temp_new(); |
2024 |
/* Size can only be qi or hi. */
|
2025 |
t_gen_sext(t0, cpu_R[dc->op1], size); |
2026 |
cris_alu(dc, CC_OP_SUB, |
2027 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
2028 |
tcg_temp_free(t0); |
2029 |
return 2; |
2030 |
} |
2031 |
|
2032 |
static unsigned int dec_setclrf(DisasContext *dc) |
2033 |
{ |
2034 |
uint32_t flags; |
2035 |
int set = (~dc->opcode >> 2) & 1; |
2036 |
|
2037 |
|
2038 |
flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4) |
2039 |
| EXTRACT_FIELD(dc->ir, 0, 3); |
2040 |
if (set && flags == 0) { |
2041 |
LOG_DIS("nop\n");
|
2042 |
return 2; |
2043 |
} else if (!set && (flags & 0x20)) { |
2044 |
LOG_DIS("di\n");
|
2045 |
} |
2046 |
else {
|
2047 |
LOG_DIS("%sf %x\n",
|
2048 |
set ? "set" : "clr", |
2049 |
flags); |
2050 |
} |
2051 |
|
2052 |
/* User space is not allowed to touch these. Silently ignore. */
|
2053 |
if (dc->tb_flags & U_FLAG) {
|
2054 |
flags &= ~(S_FLAG | I_FLAG | U_FLAG); |
2055 |
} |
2056 |
|
2057 |
if (flags & X_FLAG) {
|
2058 |
dc->flagx_known = 1;
|
2059 |
if (set)
|
2060 |
dc->flags_x = X_FLAG; |
2061 |
else
|
2062 |
dc->flags_x = 0;
|
2063 |
} |
2064 |
|
2065 |
/* Break the TB if the P flag changes. */
|
2066 |
if (flags & P_FLAG) {
|
2067 |
if ((set && !(dc->tb_flags & P_FLAG))
|
2068 |
|| (!set && (dc->tb_flags & P_FLAG))) { |
2069 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
2070 |
dc->is_jmp = DISAS_UPDATE; |
2071 |
dc->cpustate_changed = 1;
|
2072 |
} |
2073 |
} |
2074 |
if (flags & S_FLAG) {
|
2075 |
dc->cpustate_changed = 1;
|
2076 |
} |
2077 |
|
2078 |
|
2079 |
/* Simply decode the flags. */
|
2080 |
cris_evaluate_flags (dc); |
2081 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
2082 |
cris_update_cc_x(dc); |
2083 |
tcg_gen_movi_tl(cc_op, dc->cc_op); |
2084 |
|
2085 |
if (set) {
|
2086 |
if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
|
2087 |
/* Enter user mode. */
|
2088 |
t_gen_mov_env_TN(ksp, cpu_R[R_SP]); |
2089 |
tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]); |
2090 |
dc->cpustate_changed = 1;
|
2091 |
} |
2092 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); |
2093 |
} |
2094 |
else
|
2095 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags); |
2096 |
|
2097 |
dc->flags_uptodate = 1;
|
2098 |
dc->clear_x = 0;
|
2099 |
return 2; |
2100 |
} |
2101 |
|
2102 |
static unsigned int dec_move_rs(DisasContext *dc) |
2103 |
{ |
2104 |
LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2);
|
2105 |
cris_cc_mask(dc, 0);
|
2106 |
gen_helper_movl_sreg_reg(tcg_const_tl(dc->op2), tcg_const_tl(dc->op1)); |
2107 |
return 2; |
2108 |
} |
2109 |
static unsigned int dec_move_sr(DisasContext *dc) |
2110 |
{ |
2111 |
LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1);
|
2112 |
cris_cc_mask(dc, 0);
|
2113 |
gen_helper_movl_reg_sreg(tcg_const_tl(dc->op1), tcg_const_tl(dc->op2)); |
2114 |
return 2; |
2115 |
} |
2116 |
|
2117 |
static unsigned int dec_move_rp(DisasContext *dc) |
2118 |
{ |
2119 |
TCGv t[2];
|
2120 |
LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2);
|
2121 |
cris_cc_mask(dc, 0);
|
2122 |
|
2123 |
t[0] = tcg_temp_new();
|
2124 |
if (dc->op2 == PR_CCS) {
|
2125 |
cris_evaluate_flags(dc); |
2126 |
t_gen_mov_TN_reg(t[0], dc->op1);
|
2127 |
if (dc->tb_flags & U_FLAG) {
|
2128 |
t[1] = tcg_temp_new();
|
2129 |
/* User space is not allowed to touch all flags. */
|
2130 |
tcg_gen_andi_tl(t[0], t[0], 0x39f); |
2131 |
tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f); |
2132 |
tcg_gen_or_tl(t[0], t[1], t[0]); |
2133 |
tcg_temp_free(t[1]);
|
2134 |
} |
2135 |
} |
2136 |
else
|
2137 |
t_gen_mov_TN_reg(t[0], dc->op1);
|
2138 |
|
2139 |
t_gen_mov_preg_TN(dc, dc->op2, t[0]);
|
2140 |
if (dc->op2 == PR_CCS) {
|
2141 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
2142 |
dc->flags_uptodate = 1;
|
2143 |
} |
2144 |
tcg_temp_free(t[0]);
|
2145 |
return 2; |
2146 |
} |
2147 |
static unsigned int dec_move_pr(DisasContext *dc) |
2148 |
{ |
2149 |
TCGv t0; |
2150 |
LOG_DIS("move $p%u, $r%u\n", dc->op1, dc->op2);
|
2151 |
cris_cc_mask(dc, 0);
|
2152 |
|
2153 |
if (dc->op2 == PR_CCS)
|
2154 |
cris_evaluate_flags(dc); |
2155 |
|
2156 |
t0 = tcg_temp_new(); |
2157 |
t_gen_mov_TN_preg(t0, dc->op2); |
2158 |
cris_alu(dc, CC_OP_MOVE, |
2159 |
cpu_R[dc->op1], cpu_R[dc->op1], t0, preg_sizes[dc->op2]); |
2160 |
tcg_temp_free(t0); |
2161 |
return 2; |
2162 |
} |
2163 |
|
2164 |
static unsigned int dec_move_mr(DisasContext *dc) |
2165 |
{ |
2166 |
int memsize = memsize_zz(dc);
|
2167 |
int insn_len;
|
2168 |
LOG_DIS("move.%c [$r%u%s, $r%u\n",
|
2169 |
memsize_char(memsize), |
2170 |
dc->op1, dc->postinc ? "+]" : "]", |
2171 |
dc->op2); |
2172 |
|
2173 |
if (memsize == 4) { |
2174 |
insn_len = dec_prep_move_m(dc, 0, 4, cpu_R[dc->op2]); |
2175 |
cris_cc_mask(dc, CC_MASK_NZ); |
2176 |
cris_update_cc_op(dc, CC_OP_MOVE, 4);
|
2177 |
cris_update_cc_x(dc); |
2178 |
cris_update_result(dc, cpu_R[dc->op2]); |
2179 |
} |
2180 |
else {
|
2181 |
TCGv t0; |
2182 |
|
2183 |
t0 = tcg_temp_new(); |
2184 |
insn_len = dec_prep_move_m(dc, 0, memsize, t0);
|
2185 |
cris_cc_mask(dc, CC_MASK_NZ); |
2186 |
cris_alu(dc, CC_OP_MOVE, |
2187 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize); |
2188 |
tcg_temp_free(t0); |
2189 |
} |
2190 |
do_postinc(dc, memsize); |
2191 |
return insn_len;
|
2192 |
} |
2193 |
|
2194 |
static inline void cris_alu_m_alloc_temps(TCGv *t) |
2195 |
{ |
2196 |
t[0] = tcg_temp_new();
|
2197 |
t[1] = tcg_temp_new();
|
2198 |
} |
2199 |
|
2200 |
static inline void cris_alu_m_free_temps(TCGv *t) |
2201 |
{ |
2202 |
tcg_temp_free(t[0]);
|
2203 |
tcg_temp_free(t[1]);
|
2204 |
} |
2205 |
|
2206 |
static unsigned int dec_movs_m(DisasContext *dc) |
2207 |
{ |
2208 |
TCGv t[2];
|
2209 |
int memsize = memsize_z(dc);
|
2210 |
int insn_len;
|
2211 |
LOG_DIS("movs.%c [$r%u%s, $r%u\n",
|
2212 |
memsize_char(memsize), |
2213 |
dc->op1, dc->postinc ? "+]" : "]", |
2214 |
dc->op2); |
2215 |
|
2216 |
cris_alu_m_alloc_temps(t); |
2217 |
/* sign extend. */
|
2218 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
2219 |
cris_cc_mask(dc, CC_MASK_NZ); |
2220 |
cris_alu(dc, CC_OP_MOVE, |
2221 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
2222 |
do_postinc(dc, memsize); |
2223 |
cris_alu_m_free_temps(t); |
2224 |
return insn_len;
|
2225 |
} |
2226 |
|
2227 |
static unsigned int dec_addu_m(DisasContext *dc) |
2228 |
{ |
2229 |
TCGv t[2];
|
2230 |
int memsize = memsize_z(dc);
|
2231 |
int insn_len;
|
2232 |
LOG_DIS("addu.%c [$r%u%s, $r%u\n",
|
2233 |
memsize_char(memsize), |
2234 |
dc->op1, dc->postinc ? "+]" : "]", |
2235 |
dc->op2); |
2236 |
|
2237 |
cris_alu_m_alloc_temps(t); |
2238 |
/* sign extend. */
|
2239 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2240 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2241 |
cris_alu(dc, CC_OP_ADD, |
2242 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
2243 |
do_postinc(dc, memsize); |
2244 |
cris_alu_m_free_temps(t); |
2245 |
return insn_len;
|
2246 |
} |
2247 |
|
2248 |
static unsigned int dec_adds_m(DisasContext *dc) |
2249 |
{ |
2250 |
TCGv t[2];
|
2251 |
int memsize = memsize_z(dc);
|
2252 |
int insn_len;
|
2253 |
LOG_DIS("adds.%c [$r%u%s, $r%u\n",
|
2254 |
memsize_char(memsize), |
2255 |
dc->op1, dc->postinc ? "+]" : "]", |
2256 |
dc->op2); |
2257 |
|
2258 |
cris_alu_m_alloc_temps(t); |
2259 |
/* sign extend. */
|
2260 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
2261 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2262 |
cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
2263 |
do_postinc(dc, memsize); |
2264 |
cris_alu_m_free_temps(t); |
2265 |
return insn_len;
|
2266 |
} |
2267 |
|
2268 |
static unsigned int dec_subu_m(DisasContext *dc) |
2269 |
{ |
2270 |
TCGv t[2];
|
2271 |
int memsize = memsize_z(dc);
|
2272 |
int insn_len;
|
2273 |
LOG_DIS("subu.%c [$r%u%s, $r%u\n",
|
2274 |
memsize_char(memsize), |
2275 |
dc->op1, dc->postinc ? "+]" : "]", |
2276 |
dc->op2); |
2277 |
|
2278 |
cris_alu_m_alloc_temps(t); |
2279 |
/* sign extend. */
|
2280 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2281 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2282 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
2283 |
do_postinc(dc, memsize); |
2284 |
cris_alu_m_free_temps(t); |
2285 |
return insn_len;
|
2286 |
} |
2287 |
|
2288 |
static unsigned int dec_subs_m(DisasContext *dc) |
2289 |
{ |
2290 |
TCGv t[2];
|
2291 |
int memsize = memsize_z(dc);
|
2292 |
int insn_len;
|
2293 |
LOG_DIS("subs.%c [$r%u%s, $r%u\n",
|
2294 |
memsize_char(memsize), |
2295 |
dc->op1, dc->postinc ? "+]" : "]", |
2296 |
dc->op2); |
2297 |
|
2298 |
cris_alu_m_alloc_temps(t); |
2299 |
/* sign extend. */
|
2300 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
2301 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2302 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
2303 |
do_postinc(dc, memsize); |
2304 |
cris_alu_m_free_temps(t); |
2305 |
return insn_len;
|
2306 |
} |
2307 |
|
2308 |
static unsigned int dec_movu_m(DisasContext *dc) |
2309 |
{ |
2310 |
TCGv t[2];
|
2311 |
int memsize = memsize_z(dc);
|
2312 |
int insn_len;
|
2313 |
|
2314 |
LOG_DIS("movu.%c [$r%u%s, $r%u\n",
|
2315 |
memsize_char(memsize), |
2316 |
dc->op1, dc->postinc ? "+]" : "]", |
2317 |
dc->op2); |
2318 |
|
2319 |
cris_alu_m_alloc_temps(t); |
2320 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2321 |
cris_cc_mask(dc, CC_MASK_NZ); |
2322 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
2323 |
do_postinc(dc, memsize); |
2324 |
cris_alu_m_free_temps(t); |
2325 |
return insn_len;
|
2326 |
} |
2327 |
|
2328 |
static unsigned int dec_cmpu_m(DisasContext *dc) |
2329 |
{ |
2330 |
TCGv t[2];
|
2331 |
int memsize = memsize_z(dc);
|
2332 |
int insn_len;
|
2333 |
LOG_DIS("cmpu.%c [$r%u%s, $r%u\n",
|
2334 |
memsize_char(memsize), |
2335 |
dc->op1, dc->postinc ? "+]" : "]", |
2336 |
dc->op2); |
2337 |
|
2338 |
cris_alu_m_alloc_temps(t); |
2339 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2340 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2341 |
cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
2342 |
do_postinc(dc, memsize); |
2343 |
cris_alu_m_free_temps(t); |
2344 |
return insn_len;
|
2345 |
} |
2346 |
|
2347 |
static unsigned int dec_cmps_m(DisasContext *dc) |
2348 |
{ |
2349 |
TCGv t[2];
|
2350 |
int memsize = memsize_z(dc);
|
2351 |
int insn_len;
|
2352 |
LOG_DIS("cmps.%c [$r%u%s, $r%u\n",
|
2353 |
memsize_char(memsize), |
2354 |
dc->op1, dc->postinc ? "+]" : "]", |
2355 |
dc->op2); |
2356 |
|
2357 |
cris_alu_m_alloc_temps(t); |
2358 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
2359 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2360 |
cris_alu(dc, CC_OP_CMP, |
2361 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1],
|
2362 |
memsize_zz(dc)); |
2363 |
do_postinc(dc, memsize); |
2364 |
cris_alu_m_free_temps(t); |
2365 |
return insn_len;
|
2366 |
} |
2367 |
|
2368 |
static unsigned int dec_cmp_m(DisasContext *dc) |
2369 |
{ |
2370 |
TCGv t[2];
|
2371 |
int memsize = memsize_zz(dc);
|
2372 |
int insn_len;
|
2373 |
LOG_DIS("cmp.%c [$r%u%s, $r%u\n",
|
2374 |
memsize_char(memsize), |
2375 |
dc->op1, dc->postinc ? "+]" : "]", |
2376 |
dc->op2); |
2377 |
|
2378 |
cris_alu_m_alloc_temps(t); |
2379 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2380 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2381 |
cris_alu(dc, CC_OP_CMP, |
2382 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1],
|
2383 |
memsize_zz(dc)); |
2384 |
do_postinc(dc, memsize); |
2385 |
cris_alu_m_free_temps(t); |
2386 |
return insn_len;
|
2387 |
} |
2388 |
|
2389 |
static unsigned int dec_test_m(DisasContext *dc) |
2390 |
{ |
2391 |
TCGv t[2];
|
2392 |
int memsize = memsize_zz(dc);
|
2393 |
int insn_len;
|
2394 |
LOG_DIS("test.%c [$r%u%s] op2=%x\n",
|
2395 |
memsize_char(memsize), |
2396 |
dc->op1, dc->postinc ? "+]" : "]", |
2397 |
dc->op2); |
2398 |
|
2399 |
cris_evaluate_flags(dc); |
2400 |
|
2401 |
cris_alu_m_alloc_temps(t); |
2402 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2403 |
cris_cc_mask(dc, CC_MASK_NZ); |
2404 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
|
2405 |
|
2406 |
cris_alu(dc, CC_OP_CMP, |
2407 |
cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc)); |
2408 |
do_postinc(dc, memsize); |
2409 |
cris_alu_m_free_temps(t); |
2410 |
return insn_len;
|
2411 |
} |
2412 |
|
2413 |
static unsigned int dec_and_m(DisasContext *dc) |
2414 |
{ |
2415 |
TCGv t[2];
|
2416 |
int memsize = memsize_zz(dc);
|
2417 |
int insn_len;
|
2418 |
LOG_DIS("and.%c [$r%u%s, $r%u\n",
|
2419 |
memsize_char(memsize), |
2420 |
dc->op1, dc->postinc ? "+]" : "]", |
2421 |
dc->op2); |
2422 |
|
2423 |
cris_alu_m_alloc_temps(t); |
2424 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2425 |
cris_cc_mask(dc, CC_MASK_NZ); |
2426 |
cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); |
2427 |
do_postinc(dc, memsize); |
2428 |
cris_alu_m_free_temps(t); |
2429 |
return insn_len;
|
2430 |
} |
2431 |
|
2432 |
static unsigned int dec_add_m(DisasContext *dc) |
2433 |
{ |
2434 |
TCGv t[2];
|
2435 |
int memsize = memsize_zz(dc);
|
2436 |
int insn_len;
|
2437 |
LOG_DIS("add.%c [$r%u%s, $r%u\n",
|
2438 |
memsize_char(memsize), |
2439 |
dc->op1, dc->postinc ? "+]" : "]", |
2440 |
dc->op2); |
2441 |
|
2442 |
cris_alu_m_alloc_temps(t); |
2443 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2444 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2445 |
cris_alu(dc, CC_OP_ADD, |
2446 |
cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); |
2447 |
do_postinc(dc, memsize); |
2448 |
cris_alu_m_free_temps(t); |
2449 |
return insn_len;
|
2450 |
} |
2451 |
|
2452 |
static unsigned int dec_addo_m(DisasContext *dc) |
2453 |
{ |
2454 |
TCGv t[2];
|
2455 |
int memsize = memsize_zz(dc);
|
2456 |
int insn_len;
|
2457 |
LOG_DIS("add.%c [$r%u%s, $r%u\n",
|
2458 |
memsize_char(memsize), |
2459 |
dc->op1, dc->postinc ? "+]" : "]", |
2460 |
dc->op2); |
2461 |
|
2462 |
cris_alu_m_alloc_temps(t); |
2463 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
2464 |
cris_cc_mask(dc, 0);
|
2465 |
cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4); |
2466 |
do_postinc(dc, memsize); |
2467 |
cris_alu_m_free_temps(t); |
2468 |
return insn_len;
|
2469 |
} |
2470 |
|
2471 |
static unsigned int dec_bound_m(DisasContext *dc) |
2472 |
{ |
2473 |
TCGv l[2];
|
2474 |
int memsize = memsize_zz(dc);
|
2475 |
int insn_len;
|
2476 |
LOG_DIS("bound.%c [$r%u%s, $r%u\n",
|
2477 |
memsize_char(memsize), |
2478 |
dc->op1, dc->postinc ? "+]" : "]", |
2479 |
dc->op2); |
2480 |
|
2481 |
l[0] = tcg_temp_local_new();
|
2482 |
l[1] = tcg_temp_local_new();
|
2483 |
insn_len = dec_prep_alu_m(dc, 0, memsize, l[0], l[1]); |
2484 |
cris_cc_mask(dc, CC_MASK_NZ); |
2485 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4); |
2486 |
do_postinc(dc, memsize); |
2487 |
tcg_temp_free(l[0]);
|
2488 |
tcg_temp_free(l[1]);
|
2489 |
return insn_len;
|
2490 |
} |
2491 |
|
2492 |
static unsigned int dec_addc_mr(DisasContext *dc) |
2493 |
{ |
2494 |
TCGv t[2];
|
2495 |
int insn_len = 2; |
2496 |
LOG_DIS("addc [$r%u%s, $r%u\n",
|
2497 |
dc->op1, dc->postinc ? "+]" : "]", |
2498 |
dc->op2); |
2499 |
|
2500 |
cris_evaluate_flags(dc); |
2501 |
|
2502 |
/* Set for this insn. */
|
2503 |
dc->flagx_known = 1;
|
2504 |
dc->flags_x = X_FLAG; |
2505 |
|
2506 |
cris_alu_m_alloc_temps(t); |
2507 |
insn_len = dec_prep_alu_m(dc, 0, 4, t[0], t[1]); |
2508 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2509 |
cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4); |
2510 |
do_postinc(dc, 4);
|
2511 |
cris_alu_m_free_temps(t); |
2512 |
return insn_len;
|
2513 |
} |
2514 |
|
2515 |
static unsigned int dec_sub_m(DisasContext *dc) |
2516 |
{ |
2517 |
TCGv t[2];
|
2518 |
int memsize = memsize_zz(dc);
|
2519 |
int insn_len;
|
2520 |
LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
|
2521 |
memsize_char(memsize), |
2522 |
dc->op1, dc->postinc ? "+]" : "]", |
2523 |
dc->op2, dc->ir, dc->zzsize); |
2524 |
|
2525 |
cris_alu_m_alloc_temps(t); |
2526 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2527 |
cris_cc_mask(dc, CC_MASK_NZVC); |
2528 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize); |
2529 |
do_postinc(dc, memsize); |
2530 |
cris_alu_m_free_temps(t); |
2531 |
return insn_len;
|
2532 |
} |
2533 |
|
2534 |
static unsigned int dec_or_m(DisasContext *dc) |
2535 |
{ |
2536 |
TCGv t[2];
|
2537 |
int memsize = memsize_zz(dc);
|
2538 |
int insn_len;
|
2539 |
LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n",
|
2540 |
memsize_char(memsize), |
2541 |
dc->op1, dc->postinc ? "+]" : "]", |
2542 |
dc->op2, dc->pc); |
2543 |
|
2544 |
cris_alu_m_alloc_temps(t); |
2545 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2546 |
cris_cc_mask(dc, CC_MASK_NZ); |
2547 |
cris_alu(dc, CC_OP_OR, |
2548 |
cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); |
2549 |
do_postinc(dc, memsize); |
2550 |
cris_alu_m_free_temps(t); |
2551 |
return insn_len;
|
2552 |
} |
2553 |
|
2554 |
static unsigned int dec_move_mp(DisasContext *dc) |
2555 |
{ |
2556 |
TCGv t[2];
|
2557 |
int memsize = memsize_zz(dc);
|
2558 |
int insn_len = 2; |
2559 |
|
2560 |
LOG_DIS("move.%c [$r%u%s, $p%u\n",
|
2561 |
memsize_char(memsize), |
2562 |
dc->op1, |
2563 |
dc->postinc ? "+]" : "]", |
2564 |
dc->op2); |
2565 |
|
2566 |
cris_alu_m_alloc_temps(t); |
2567 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
2568 |
cris_cc_mask(dc, 0);
|
2569 |
if (dc->op2 == PR_CCS) {
|
2570 |
cris_evaluate_flags(dc); |
2571 |
if (dc->tb_flags & U_FLAG) {
|
2572 |
/* User space is not allowed to touch all flags. */
|
2573 |
tcg_gen_andi_tl(t[1], t[1], 0x39f); |
2574 |
tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f); |
2575 |
tcg_gen_or_tl(t[1], t[0], t[1]); |
2576 |
} |
2577 |
} |
2578 |
|
2579 |
t_gen_mov_preg_TN(dc, dc->op2, t[1]);
|
2580 |
|
2581 |
do_postinc(dc, memsize); |
2582 |
cris_alu_m_free_temps(t); |
2583 |
return insn_len;
|
2584 |
} |
2585 |
|
2586 |
static unsigned int dec_move_pm(DisasContext *dc) |
2587 |
{ |
2588 |
TCGv t0; |
2589 |
int memsize;
|
2590 |
|
2591 |
memsize = preg_sizes[dc->op2]; |
2592 |
|
2593 |
LOG_DIS("move.%c $p%u, [$r%u%s\n",
|
2594 |
memsize_char(memsize), |
2595 |
dc->op2, dc->op1, dc->postinc ? "+]" : "]"); |
2596 |
|
2597 |
/* prepare store. Address in T0, value in T1. */
|
2598 |
if (dc->op2 == PR_CCS)
|
2599 |
cris_evaluate_flags(dc); |
2600 |
t0 = tcg_temp_new(); |
2601 |
t_gen_mov_TN_preg(t0, dc->op2); |
2602 |
cris_flush_cc_state(dc); |
2603 |
gen_store(dc, cpu_R[dc->op1], t0, memsize); |
2604 |
tcg_temp_free(t0); |
2605 |
|
2606 |
cris_cc_mask(dc, 0);
|
2607 |
if (dc->postinc)
|
2608 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); |
2609 |
return 2; |
2610 |
} |
2611 |
|
2612 |
static unsigned int dec_movem_mr(DisasContext *dc) |
2613 |
{ |
2614 |
TCGv_i64 tmp[16];
|
2615 |
TCGv tmp32; |
2616 |
TCGv addr; |
2617 |
int i;
|
2618 |
int nr = dc->op2 + 1; |
2619 |
|
2620 |
LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1,
|
2621 |
dc->postinc ? "+]" : "]", dc->op2); |
2622 |
|
2623 |
addr = tcg_temp_new(); |
2624 |
/* There are probably better ways of doing this. */
|
2625 |
cris_flush_cc_state(dc); |
2626 |
for (i = 0; i < (nr >> 1); i++) { |
2627 |
tmp[i] = tcg_temp_new_i64(); |
2628 |
tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
|
2629 |
gen_load64(dc, tmp[i], addr); |
2630 |
} |
2631 |
if (nr & 1) { |
2632 |
tmp32 = tcg_temp_new_i32(); |
2633 |
tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
|
2634 |
gen_load(dc, tmp32, addr, 4, 0); |
2635 |
} else
|
2636 |
TCGV_UNUSED(tmp32); |
2637 |
tcg_temp_free(addr); |
2638 |
|
2639 |
for (i = 0; i < (nr >> 1); i++) { |
2640 |
tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
|
2641 |
tcg_gen_shri_i64(tmp[i], tmp[i], 32);
|
2642 |
tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]); |
2643 |
tcg_temp_free_i64(tmp[i]); |
2644 |
} |
2645 |
if (nr & 1) { |
2646 |
tcg_gen_mov_tl(cpu_R[dc->op2], tmp32); |
2647 |
tcg_temp_free(tmp32); |
2648 |
} |
2649 |
|
2650 |
/* writeback the updated pointer value. */
|
2651 |
if (dc->postinc)
|
2652 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
|
2653 |
|
2654 |
/* gen_load might want to evaluate the previous insns flags. */
|
2655 |
cris_cc_mask(dc, 0);
|
2656 |
return 2; |
2657 |
} |
2658 |
|
2659 |
static unsigned int dec_movem_rm(DisasContext *dc) |
2660 |
{ |
2661 |
TCGv tmp; |
2662 |
TCGv addr; |
2663 |
int i;
|
2664 |
|
2665 |
LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
|
2666 |
dc->postinc ? "+]" : "]"); |
2667 |
|
2668 |
cris_flush_cc_state(dc); |
2669 |
|
2670 |
tmp = tcg_temp_new(); |
2671 |
addr = tcg_temp_new(); |
2672 |
tcg_gen_movi_tl(tmp, 4);
|
2673 |
tcg_gen_mov_tl(addr, cpu_R[dc->op1]); |
2674 |
for (i = 0; i <= dc->op2; i++) { |
2675 |
/* Displace addr. */
|
2676 |
/* Perform the store. */
|
2677 |
gen_store(dc, addr, cpu_R[i], 4);
|
2678 |
tcg_gen_add_tl(addr, addr, tmp); |
2679 |
} |
2680 |
if (dc->postinc)
|
2681 |
tcg_gen_mov_tl(cpu_R[dc->op1], addr); |
2682 |
cris_cc_mask(dc, 0);
|
2683 |
tcg_temp_free(tmp); |
2684 |
tcg_temp_free(addr); |
2685 |
return 2; |
2686 |
} |
2687 |
|
2688 |
static unsigned int dec_move_rm(DisasContext *dc) |
2689 |
{ |
2690 |
int memsize;
|
2691 |
|
2692 |
memsize = memsize_zz(dc); |
2693 |
|
2694 |
LOG_DIS("move.%c $r%u, [$r%u]\n",
|
2695 |
memsize_char(memsize), dc->op2, dc->op1); |
2696 |
|
2697 |
/* prepare store. */
|
2698 |
cris_flush_cc_state(dc); |
2699 |
gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize); |
2700 |
|
2701 |
if (dc->postinc)
|
2702 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); |
2703 |
cris_cc_mask(dc, 0);
|
2704 |
return 2; |
2705 |
} |
2706 |
|
2707 |
static unsigned int dec_lapcq(DisasContext *dc) |
2708 |
{ |
2709 |
LOG_DIS("lapcq %x, $r%u\n",
|
2710 |
dc->pc + dc->op1*2, dc->op2);
|
2711 |
cris_cc_mask(dc, 0);
|
2712 |
tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
|
2713 |
return 2; |
2714 |
} |
2715 |
|
2716 |
static unsigned int dec_lapc_im(DisasContext *dc) |
2717 |
{ |
2718 |
unsigned int rd; |
2719 |
int32_t imm; |
2720 |
int32_t pc; |
2721 |
|
2722 |
rd = dc->op2; |
2723 |
|
2724 |
cris_cc_mask(dc, 0);
|
2725 |
imm = ldl_code(dc->pc + 2);
|
2726 |
LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2);
|
2727 |
|
2728 |
pc = dc->pc; |
2729 |
pc += imm; |
2730 |
t_gen_mov_reg_TN(rd, tcg_const_tl(pc)); |
2731 |
return 6; |
2732 |
} |
2733 |
|
2734 |
/* Jump to special reg. */
|
2735 |
static unsigned int dec_jump_p(DisasContext *dc) |
2736 |
{ |
2737 |
LOG_DIS("jump $p%u\n", dc->op2);
|
2738 |
|
2739 |
if (dc->op2 == PR_CCS)
|
2740 |
cris_evaluate_flags(dc); |
2741 |
t_gen_mov_TN_preg(env_btarget, dc->op2); |
2742 |
/* rete will often have low bit set to indicate delayslot. */
|
2743 |
tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
|
2744 |
cris_cc_mask(dc, 0);
|
2745 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
2746 |
return 2; |
2747 |
} |
2748 |
|
2749 |
/* Jump and save. */
|
2750 |
static unsigned int dec_jas_r(DisasContext *dc) |
2751 |
{ |
2752 |
LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2);
|
2753 |
cris_cc_mask(dc, 0);
|
2754 |
/* Store the return address in Pd. */
|
2755 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); |
2756 |
if (dc->op2 > 15) |
2757 |
abort(); |
2758 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
|
2759 |
|
2760 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
2761 |
return 2; |
2762 |
} |
2763 |
|
2764 |
static unsigned int dec_jas_im(DisasContext *dc) |
2765 |
{ |
2766 |
uint32_t imm; |
2767 |
|
2768 |
imm = ldl_code(dc->pc + 2);
|
2769 |
|
2770 |
LOG_DIS("jas 0x%x\n", imm);
|
2771 |
cris_cc_mask(dc, 0);
|
2772 |
/* Store the return address in Pd. */
|
2773 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
|
2774 |
|
2775 |
dc->jmp_pc = imm; |
2776 |
cris_prepare_jmp(dc, JMP_DIRECT); |
2777 |
return 6; |
2778 |
} |
2779 |
|
2780 |
static unsigned int dec_jasc_im(DisasContext *dc) |
2781 |
{ |
2782 |
uint32_t imm; |
2783 |
|
2784 |
imm = ldl_code(dc->pc + 2);
|
2785 |
|
2786 |
LOG_DIS("jasc 0x%x\n", imm);
|
2787 |
cris_cc_mask(dc, 0);
|
2788 |
/* Store the return address in Pd. */
|
2789 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4)); |
2790 |
|
2791 |
dc->jmp_pc = imm; |
2792 |
cris_prepare_jmp(dc, JMP_DIRECT); |
2793 |
return 6; |
2794 |
} |
2795 |
|
2796 |
static unsigned int dec_jasc_r(DisasContext *dc) |
2797 |
{ |
2798 |
LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2);
|
2799 |
cris_cc_mask(dc, 0);
|
2800 |
/* Store the return address in Pd. */
|
2801 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); |
2802 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4)); |
2803 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
2804 |
return 2; |
2805 |
} |
2806 |
|
2807 |
static unsigned int dec_bcc_im(DisasContext *dc) |
2808 |
{ |
2809 |
int32_t offset; |
2810 |
uint32_t cond = dc->op2; |
2811 |
|
2812 |
offset = ldsw_code(dc->pc + 2);
|
2813 |
|
2814 |
LOG_DIS("b%s %d pc=%x dst=%x\n",
|
2815 |
cc_name(cond), offset, |
2816 |
dc->pc, dc->pc + offset); |
2817 |
|
2818 |
cris_cc_mask(dc, 0);
|
2819 |
/* op2 holds the condition-code. */
|
2820 |
cris_prepare_cc_branch (dc, offset, cond); |
2821 |
return 4; |
2822 |
} |
2823 |
|
2824 |
static unsigned int dec_bas_im(DisasContext *dc) |
2825 |
{ |
2826 |
int32_t simm; |
2827 |
|
2828 |
|
2829 |
simm = ldl_code(dc->pc + 2);
|
2830 |
|
2831 |
LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2);
|
2832 |
cris_cc_mask(dc, 0);
|
2833 |
/* Store the return address in Pd. */
|
2834 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
|
2835 |
|
2836 |
dc->jmp_pc = dc->pc + simm; |
2837 |
cris_prepare_jmp(dc, JMP_DIRECT); |
2838 |
return 6; |
2839 |
} |
2840 |
|
2841 |
static unsigned int dec_basc_im(DisasContext *dc) |
2842 |
{ |
2843 |
int32_t simm; |
2844 |
simm = ldl_code(dc->pc + 2);
|
2845 |
|
2846 |
LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2);
|
2847 |
cris_cc_mask(dc, 0);
|
2848 |
/* Store the return address in Pd. */
|
2849 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
|
2850 |
|
2851 |
dc->jmp_pc = dc->pc + simm; |
2852 |
cris_prepare_jmp(dc, JMP_DIRECT); |
2853 |
return 6; |
2854 |
} |
2855 |
|
2856 |
static unsigned int dec_rfe_etc(DisasContext *dc) |
2857 |
{ |
2858 |
cris_cc_mask(dc, 0);
|
2859 |
|
2860 |
if (dc->op2 == 15) { |
2861 |
t_gen_mov_env_TN(halted, tcg_const_tl(1));
|
2862 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
2863 |
t_gen_raise_exception(EXCP_HLT); |
2864 |
return 2; |
2865 |
} |
2866 |
|
2867 |
switch (dc->op2 & 7) { |
2868 |
case 2: |
2869 |
/* rfe. */
|
2870 |
LOG_DIS("rfe\n");
|
2871 |
cris_evaluate_flags(dc); |
2872 |
gen_helper_rfe(); |
2873 |
dc->is_jmp = DISAS_UPDATE; |
2874 |
break;
|
2875 |
case 5: |
2876 |
/* rfn. */
|
2877 |
LOG_DIS("rfn\n");
|
2878 |
cris_evaluate_flags(dc); |
2879 |
gen_helper_rfn(); |
2880 |
dc->is_jmp = DISAS_UPDATE; |
2881 |
break;
|
2882 |
case 6: |
2883 |
LOG_DIS("break %d\n", dc->op1);
|
2884 |
cris_evaluate_flags (dc); |
2885 |
/* break. */
|
2886 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
2887 |
|
2888 |
/* Breaks start at 16 in the exception vector. */
|
2889 |
t_gen_mov_env_TN(trap_vector, |
2890 |
tcg_const_tl(dc->op1 + 16));
|
2891 |
t_gen_raise_exception(EXCP_BREAK); |
2892 |
dc->is_jmp = DISAS_UPDATE; |
2893 |
break;
|
2894 |
default:
|
2895 |
printf ("op2=%x\n", dc->op2);
|
2896 |
BUG(); |
2897 |
break;
|
2898 |
|
2899 |
} |
2900 |
return 2; |
2901 |
} |
2902 |
|
2903 |
static unsigned int dec_ftag_fidx_d_m(DisasContext *dc) |
2904 |
{ |
2905 |
return 2; |
2906 |
} |
2907 |
|
2908 |
static unsigned int dec_ftag_fidx_i_m(DisasContext *dc) |
2909 |
{ |
2910 |
return 2; |
2911 |
} |
2912 |
|
2913 |
static unsigned int dec_null(DisasContext *dc) |
2914 |
{ |
2915 |
printf ("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
|
2916 |
dc->pc, dc->opcode, dc->op1, dc->op2); |
2917 |
fflush(NULL);
|
2918 |
BUG(); |
2919 |
return 2; |
2920 |
} |
2921 |
|
2922 |
static struct decoder_info { |
2923 |
struct {
|
2924 |
uint32_t bits; |
2925 |
uint32_t mask; |
2926 |
}; |
2927 |
unsigned int (*dec)(DisasContext *dc); |
2928 |
} decinfo[] = { |
2929 |
/* Order matters here. */
|
2930 |
{DEC_MOVEQ, dec_moveq}, |
2931 |
{DEC_BTSTQ, dec_btstq}, |
2932 |
{DEC_CMPQ, dec_cmpq}, |
2933 |
{DEC_ADDOQ, dec_addoq}, |
2934 |
{DEC_ADDQ, dec_addq}, |
2935 |
{DEC_SUBQ, dec_subq}, |
2936 |
{DEC_ANDQ, dec_andq}, |
2937 |
{DEC_ORQ, dec_orq}, |
2938 |
{DEC_ASRQ, dec_asrq}, |
2939 |
{DEC_LSLQ, dec_lslq}, |
2940 |
{DEC_LSRQ, dec_lsrq}, |
2941 |
{DEC_BCCQ, dec_bccq}, |
2942 |
|
2943 |
{DEC_BCC_IM, dec_bcc_im}, |
2944 |
{DEC_JAS_IM, dec_jas_im}, |
2945 |
{DEC_JAS_R, dec_jas_r}, |
2946 |
{DEC_JASC_IM, dec_jasc_im}, |
2947 |
{DEC_JASC_R, dec_jasc_r}, |
2948 |
{DEC_BAS_IM, dec_bas_im}, |
2949 |
{DEC_BASC_IM, dec_basc_im}, |
2950 |
{DEC_JUMP_P, dec_jump_p}, |
2951 |
{DEC_LAPC_IM, dec_lapc_im}, |
2952 |
{DEC_LAPCQ, dec_lapcq}, |
2953 |
|
2954 |
{DEC_RFE_ETC, dec_rfe_etc}, |
2955 |
{DEC_ADDC_MR, dec_addc_mr}, |
2956 |
|
2957 |
{DEC_MOVE_MP, dec_move_mp}, |
2958 |
{DEC_MOVE_PM, dec_move_pm}, |
2959 |
{DEC_MOVEM_MR, dec_movem_mr}, |
2960 |
{DEC_MOVEM_RM, dec_movem_rm}, |
2961 |
{DEC_MOVE_PR, dec_move_pr}, |
2962 |
{DEC_SCC_R, dec_scc_r}, |
2963 |
{DEC_SETF, dec_setclrf}, |
2964 |
{DEC_CLEARF, dec_setclrf}, |
2965 |
|
2966 |
{DEC_MOVE_SR, dec_move_sr}, |
2967 |
{DEC_MOVE_RP, dec_move_rp}, |
2968 |
{DEC_SWAP_R, dec_swap_r}, |
2969 |
{DEC_ABS_R, dec_abs_r}, |
2970 |
{DEC_LZ_R, dec_lz_r}, |
2971 |
{DEC_MOVE_RS, dec_move_rs}, |
2972 |
{DEC_BTST_R, dec_btst_r}, |
2973 |
{DEC_ADDC_R, dec_addc_r}, |
2974 |
|
2975 |
{DEC_DSTEP_R, dec_dstep_r}, |
2976 |
{DEC_XOR_R, dec_xor_r}, |
2977 |
{DEC_MCP_R, dec_mcp_r}, |
2978 |
{DEC_CMP_R, dec_cmp_r}, |
2979 |
|
2980 |
{DEC_ADDI_R, dec_addi_r}, |
2981 |
{DEC_ADDI_ACR, dec_addi_acr}, |
2982 |
|
2983 |
{DEC_ADD_R, dec_add_r}, |
2984 |
{DEC_SUB_R, dec_sub_r}, |
2985 |
|
2986 |
{DEC_ADDU_R, dec_addu_r}, |
2987 |
{DEC_ADDS_R, dec_adds_r}, |
2988 |
{DEC_SUBU_R, dec_subu_r}, |
2989 |
{DEC_SUBS_R, dec_subs_r}, |
2990 |
{DEC_LSL_R, dec_lsl_r}, |
2991 |
|
2992 |
{DEC_AND_R, dec_and_r}, |
2993 |
{DEC_OR_R, dec_or_r}, |
2994 |
{DEC_BOUND_R, dec_bound_r}, |
2995 |
{DEC_ASR_R, dec_asr_r}, |
2996 |
{DEC_LSR_R, dec_lsr_r}, |
2997 |
|
2998 |
{DEC_MOVU_R, dec_movu_r}, |
2999 |
{DEC_MOVS_R, dec_movs_r}, |
3000 |
{DEC_NEG_R, dec_neg_r}, |
3001 |
{DEC_MOVE_R, dec_move_r}, |
3002 |
|
3003 |
{DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m}, |
3004 |
{DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m}, |
3005 |
|
3006 |
{DEC_MULS_R, dec_muls_r}, |
3007 |
{DEC_MULU_R, dec_mulu_r}, |
3008 |
|
3009 |
{DEC_ADDU_M, dec_addu_m}, |
3010 |
{DEC_ADDS_M, dec_adds_m}, |
3011 |
{DEC_SUBU_M, dec_subu_m}, |
3012 |
{DEC_SUBS_M, dec_subs_m}, |
3013 |
|
3014 |
{DEC_CMPU_M, dec_cmpu_m}, |
3015 |
{DEC_CMPS_M, dec_cmps_m}, |
3016 |
{DEC_MOVU_M, dec_movu_m}, |
3017 |
{DEC_MOVS_M, dec_movs_m}, |
3018 |
|
3019 |
{DEC_CMP_M, dec_cmp_m}, |
3020 |
{DEC_ADDO_M, dec_addo_m}, |
3021 |
{DEC_BOUND_M, dec_bound_m}, |
3022 |
{DEC_ADD_M, dec_add_m}, |
3023 |
{DEC_SUB_M, dec_sub_m}, |
3024 |
{DEC_AND_M, dec_and_m}, |
3025 |
{DEC_OR_M, dec_or_m}, |
3026 |
{DEC_MOVE_RM, dec_move_rm}, |
3027 |
{DEC_TEST_M, dec_test_m}, |
3028 |
{DEC_MOVE_MR, dec_move_mr}, |
3029 |
|
3030 |
{{0, 0}, dec_null} |
3031 |
}; |
3032 |
|
3033 |
static inline unsigned int |
3034 |
cris_decoder(DisasContext *dc) |
3035 |
{ |
3036 |
unsigned int insn_len = 2; |
3037 |
int i;
|
3038 |
|
3039 |
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
|
3040 |
tcg_gen_debug_insn_start(dc->pc); |
3041 |
|
3042 |
/* Load a halfword onto the instruction register. */
|
3043 |
dc->ir = lduw_code(dc->pc); |
3044 |
|
3045 |
/* Now decode it. */
|
3046 |
dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11); |
3047 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3); |
3048 |
dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15); |
3049 |
dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4); |
3050 |
dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5); |
3051 |
dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); |
3052 |
|
3053 |
/* Large switch for all insns. */
|
3054 |
for (i = 0; i < ARRAY_SIZE(decinfo); i++) { |
3055 |
if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits)
|
3056 |
{ |
3057 |
insn_len = decinfo[i].dec(dc); |
3058 |
break;
|
3059 |
} |
3060 |
} |
3061 |
|
3062 |
#if !defined(CONFIG_USER_ONLY)
|
3063 |
/* Single-stepping ? */
|
3064 |
if (dc->tb_flags & S_FLAG) {
|
3065 |
int l1;
|
3066 |
|
3067 |
l1 = gen_new_label(); |
3068 |
tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1); |
3069 |
/* We treat SPC as a break with an odd trap vector. */
|
3070 |
cris_evaluate_flags (dc); |
3071 |
t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
|
3072 |
tcg_gen_movi_tl(env_pc, dc->pc + insn_len); |
3073 |
tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len); |
3074 |
t_gen_raise_exception(EXCP_BREAK); |
3075 |
gen_set_label(l1); |
3076 |
} |
3077 |
#endif
|
3078 |
return insn_len;
|
3079 |
} |
3080 |
|
3081 |
static void check_breakpoint(CPUState *env, DisasContext *dc) |
3082 |
{ |
3083 |
CPUBreakpoint *bp; |
3084 |
|
3085 |
if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
|
3086 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
3087 |
if (bp->pc == dc->pc) {
|
3088 |
cris_evaluate_flags (dc); |
3089 |
tcg_gen_movi_tl(env_pc, dc->pc); |
3090 |
t_gen_raise_exception(EXCP_DEBUG); |
3091 |
dc->is_jmp = DISAS_UPDATE; |
3092 |
} |
3093 |
} |
3094 |
} |
3095 |
} |
3096 |
|
3097 |
|
3098 |
/*
|
3099 |
* Delay slots on QEMU/CRIS.
|
3100 |
*
|
3101 |
* If an exception hits on a delayslot, the core will let ERP (the Exception
|
3102 |
* Return Pointer) point to the branch (the previous) insn and set the lsb to
|
3103 |
* to give SW a hint that the exception actually hit on the dslot.
|
3104 |
*
|
3105 |
* CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
|
3106 |
* the core and any jmp to an odd addresses will mask off that lsb. It is
|
3107 |
* simply there to let sw know there was an exception on a dslot.
|
3108 |
*
|
3109 |
* When the software returns from an exception, the branch will re-execute.
|
3110 |
* On QEMU care needs to be taken when a branch+delayslot sequence is broken
|
3111 |
* and the branch and delayslot dont share pages.
|
3112 |
*
|
3113 |
* The TB contaning the branch insn will set up env->btarget and evaluate
|
3114 |
* env->btaken. When the translation loop exits we will note that the branch
|
3115 |
* sequence is broken and let env->dslot be the size of the branch insn (those
|
3116 |
* vary in length).
|
3117 |
*
|
3118 |
* The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
|
3119 |
* set). It will also expect to have env->dslot setup with the size of the
|
3120 |
* delay slot so that env->pc - env->dslot point to the branch insn. This TB
|
3121 |
* will execute the dslot and take the branch, either to btarget or just one
|
3122 |
* insn ahead.
|
3123 |
*
|
3124 |
* When exceptions occur, we check for env->dslot in do_interrupt to detect
|
3125 |
* broken branch sequences and setup $erp accordingly (i.e let it point to the
|
3126 |
* branch and set lsb). Then env->dslot gets cleared so that the exception
|
3127 |
* handler can enter. When returning from exceptions (jump $erp) the lsb gets
|
3128 |
* masked off and we will reexecute the branch insn.
|
3129 |
*
|
3130 |
*/
|
3131 |
|
3132 |
/* generate intermediate code for basic block 'tb'. */
|
3133 |
static void |
3134 |
gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, |
3135 |
int search_pc)
|
3136 |
{ |
3137 |
uint16_t *gen_opc_end; |
3138 |
uint32_t pc_start; |
3139 |
unsigned int insn_len; |
3140 |
int j, lj;
|
3141 |
struct DisasContext ctx;
|
3142 |
struct DisasContext *dc = &ctx;
|
3143 |
uint32_t next_page_start; |
3144 |
target_ulong npc; |
3145 |
int num_insns;
|
3146 |
int max_insns;
|
3147 |
|
3148 |
qemu_log_try_set_file(stderr); |
3149 |
|
3150 |
/* Odd PC indicates that branch is rexecuting due to exception in the
|
3151 |
* delayslot, like in real hw.
|
3152 |
*/
|
3153 |
pc_start = tb->pc & ~1;
|
3154 |
dc->env = env; |
3155 |
dc->tb = tb; |
3156 |
|
3157 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
3158 |
|
3159 |
dc->is_jmp = DISAS_NEXT; |
3160 |
dc->ppc = pc_start; |
3161 |
dc->pc = pc_start; |
3162 |
dc->singlestep_enabled = env->singlestep_enabled; |
3163 |
dc->flags_uptodate = 1;
|
3164 |
dc->flagx_known = 1;
|
3165 |
dc->flags_x = tb->flags & X_FLAG; |
3166 |
dc->cc_x_uptodate = 0;
|
3167 |
dc->cc_mask = 0;
|
3168 |
dc->update_cc = 0;
|
3169 |
|
3170 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
3171 |
dc->cc_size_uptodate = -1;
|
3172 |
|
3173 |
/* Decode TB flags. */
|
3174 |
dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG | X_FLAG); |
3175 |
dc->delayed_branch = !!(tb->flags & 7);
|
3176 |
if (dc->delayed_branch)
|
3177 |
dc->jmp = JMP_INDIRECT; |
3178 |
else
|
3179 |
dc->jmp = JMP_NOJMP; |
3180 |
|
3181 |
dc->cpustate_changed = 0;
|
3182 |
|
3183 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
3184 |
qemu_log( |
3185 |
"srch=%d pc=%x %x flg=%llx bt=%x ds=%u ccs=%x\n"
|
3186 |
"pid=%x usp=%x\n"
|
3187 |
"%x.%x.%x.%x\n"
|
3188 |
"%x.%x.%x.%x\n"
|
3189 |
"%x.%x.%x.%x\n"
|
3190 |
"%x.%x.%x.%x\n",
|
3191 |
search_pc, dc->pc, dc->ppc, |
3192 |
(unsigned long long)tb->flags, |
3193 |
env->btarget, (unsigned)tb->flags & 7, |
3194 |
env->pregs[PR_CCS], |
3195 |
env->pregs[PR_PID], env->pregs[PR_USP], |
3196 |
env->regs[0], env->regs[1], env->regs[2], env->regs[3], |
3197 |
env->regs[4], env->regs[5], env->regs[6], env->regs[7], |
3198 |
env->regs[8], env->regs[9], |
3199 |
env->regs[10], env->regs[11], |
3200 |
env->regs[12], env->regs[13], |
3201 |
env->regs[14], env->regs[15]); |
3202 |
qemu_log("--------------\n");
|
3203 |
qemu_log("IN: %s\n", lookup_symbol(pc_start));
|
3204 |
} |
3205 |
|
3206 |
next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; |
3207 |
lj = -1;
|
3208 |
num_insns = 0;
|
3209 |
max_insns = tb->cflags & CF_COUNT_MASK; |
3210 |
if (max_insns == 0) |
3211 |
max_insns = CF_COUNT_MASK; |
3212 |
|
3213 |
gen_icount_start(); |
3214 |
do
|
3215 |
{ |
3216 |
check_breakpoint(env, dc); |
3217 |
|
3218 |
if (search_pc) {
|
3219 |
j = gen_opc_ptr - gen_opc_buf; |
3220 |
if (lj < j) {
|
3221 |
lj++; |
3222 |
while (lj < j)
|
3223 |
gen_opc_instr_start[lj++] = 0;
|
3224 |
} |
3225 |
if (dc->delayed_branch == 1) |
3226 |
gen_opc_pc[lj] = dc->ppc | 1;
|
3227 |
else
|
3228 |
gen_opc_pc[lj] = dc->pc; |
3229 |
gen_opc_instr_start[lj] = 1;
|
3230 |
gen_opc_icount[lj] = num_insns; |
3231 |
} |
3232 |
|
3233 |
/* Pretty disas. */
|
3234 |
LOG_DIS("%8.8x:\t", dc->pc);
|
3235 |
|
3236 |
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) |
3237 |
gen_io_start(); |
3238 |
dc->clear_x = 1;
|
3239 |
|
3240 |
insn_len = cris_decoder(dc); |
3241 |
dc->ppc = dc->pc; |
3242 |
dc->pc += insn_len; |
3243 |
if (dc->clear_x)
|
3244 |
cris_clear_x_flag(dc); |
3245 |
|
3246 |
num_insns++; |
3247 |
/* Check for delayed branches here. If we do it before
|
3248 |
actually generating any host code, the simulator will just
|
3249 |
loop doing nothing for on this program location. */
|
3250 |
if (dc->delayed_branch) {
|
3251 |
dc->delayed_branch--; |
3252 |
if (dc->delayed_branch == 0) |
3253 |
{ |
3254 |
if (tb->flags & 7) |
3255 |
t_gen_mov_env_TN(dslot, |
3256 |
tcg_const_tl(0));
|
3257 |
if (dc->jmp == JMP_DIRECT) {
|
3258 |
dc->is_jmp = DISAS_NEXT; |
3259 |
} else {
|
3260 |
t_gen_cc_jmp(env_btarget, |
3261 |
tcg_const_tl(dc->pc)); |
3262 |
dc->is_jmp = DISAS_JUMP; |
3263 |
} |
3264 |
break;
|
3265 |
} |
3266 |
} |
3267 |
|
3268 |
/* If we are rexecuting a branch due to exceptions on
|
3269 |
delay slots dont break. */
|
3270 |
if (!(tb->pc & 1) && env->singlestep_enabled) |
3271 |
break;
|
3272 |
} while (!dc->is_jmp && !dc->cpustate_changed
|
3273 |
&& gen_opc_ptr < gen_opc_end |
3274 |
&& !singlestep |
3275 |
&& (dc->pc < next_page_start) |
3276 |
&& num_insns < max_insns); |
3277 |
|
3278 |
npc = dc->pc; |
3279 |
if (dc->jmp == JMP_DIRECT && !dc->delayed_branch)
|
3280 |
npc = dc->jmp_pc; |
3281 |
|
3282 |
if (tb->cflags & CF_LAST_IO)
|
3283 |
gen_io_end(); |
3284 |
/* Force an update if the per-tb cpu state has changed. */
|
3285 |
if (dc->is_jmp == DISAS_NEXT
|
3286 |
&& (dc->cpustate_changed || !dc->flagx_known |
3287 |
|| (dc->flags_x != (tb->flags & X_FLAG)))) { |
3288 |
dc->is_jmp = DISAS_UPDATE; |
3289 |
tcg_gen_movi_tl(env_pc, npc); |
3290 |
} |
3291 |
/* Broken branch+delayslot sequence. */
|
3292 |
if (dc->delayed_branch == 1) { |
3293 |
/* Set env->dslot to the size of the branch insn. */
|
3294 |
t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc)); |
3295 |
cris_store_direct_jmp(dc); |
3296 |
} |
3297 |
|
3298 |
cris_evaluate_flags (dc); |
3299 |
|
3300 |
if (unlikely(env->singlestep_enabled)) {
|
3301 |
if (dc->is_jmp == DISAS_NEXT)
|
3302 |
tcg_gen_movi_tl(env_pc, npc); |
3303 |
t_gen_raise_exception(EXCP_DEBUG); |
3304 |
} else {
|
3305 |
switch(dc->is_jmp) {
|
3306 |
case DISAS_NEXT:
|
3307 |
gen_goto_tb(dc, 1, npc);
|
3308 |
break;
|
3309 |
default:
|
3310 |
case DISAS_JUMP:
|
3311 |
case DISAS_UPDATE:
|
3312 |
/* indicate that the hash table must be used
|
3313 |
to find the next TB */
|
3314 |
tcg_gen_exit_tb(0);
|
3315 |
break;
|
3316 |
case DISAS_SWI:
|
3317 |
case DISAS_TB_JUMP:
|
3318 |
/* nothing more to generate */
|
3319 |
break;
|
3320 |
} |
3321 |
} |
3322 |
gen_icount_end(tb, num_insns); |
3323 |
*gen_opc_ptr = INDEX_op_end; |
3324 |
if (search_pc) {
|
3325 |
j = gen_opc_ptr - gen_opc_buf; |
3326 |
lj++; |
3327 |
while (lj <= j)
|
3328 |
gen_opc_instr_start[lj++] = 0;
|
3329 |
} else {
|
3330 |
tb->size = dc->pc - pc_start; |
3331 |
tb->icount = num_insns; |
3332 |
} |
3333 |
|
3334 |
#ifdef DEBUG_DISAS
|
3335 |
#if !DISAS_CRIS
|
3336 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
3337 |
log_target_disas(pc_start, dc->pc - pc_start, 0);
|
3338 |
qemu_log("\nisize=%d osize=%zd\n",
|
3339 |
dc->pc - pc_start, gen_opc_ptr - gen_opc_buf); |
3340 |
} |
3341 |
#endif
|
3342 |
#endif
|
3343 |
} |
3344 |
|
3345 |
void gen_intermediate_code (CPUState *env, struct TranslationBlock *tb) |
3346 |
{ |
3347 |
gen_intermediate_code_internal(env, tb, 0);
|
3348 |
} |
3349 |
|
3350 |
void gen_intermediate_code_pc (CPUState *env, struct TranslationBlock *tb) |
3351 |
{ |
3352 |
gen_intermediate_code_internal(env, tb, 1);
|
3353 |
} |
3354 |
|
3355 |
void cpu_dump_state (CPUState *env, FILE *f,
|
3356 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
3357 |
int flags)
|
3358 |
{ |
3359 |
int i;
|
3360 |
uint32_t srs; |
3361 |
|
3362 |
if (!env || !f)
|
3363 |
return;
|
3364 |
|
3365 |
cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
|
3366 |
"cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
|
3367 |
env->pc, env->pregs[PR_CCS], env->btaken, env->btarget, |
3368 |
env->cc_op, |
3369 |
env->cc_src, env->cc_dest, env->cc_result, env->cc_mask); |
3370 |
|
3371 |
|
3372 |
for (i = 0; i < 16; i++) { |
3373 |
cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
|
3374 |
if ((i + 1) % 4 == 0) |
3375 |
cpu_fprintf(f, "\n");
|
3376 |
} |
3377 |
cpu_fprintf(f, "\nspecial regs:\n");
|
3378 |
for (i = 0; i < 16; i++) { |
3379 |
cpu_fprintf(f, "p%2.2d=%8.8x ", i, env->pregs[i]);
|
3380 |
if ((i + 1) % 4 == 0) |
3381 |
cpu_fprintf(f, "\n");
|
3382 |
} |
3383 |
srs = env->pregs[PR_SRS]; |
3384 |
cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
|
3385 |
if (srs < 256) { |
3386 |
for (i = 0; i < 16; i++) { |
3387 |
cpu_fprintf(f, "s%2.2d=%8.8x ",
|
3388 |
i, env->sregs[srs][i]); |
3389 |
if ((i + 1) % 4 == 0) |
3390 |
cpu_fprintf(f, "\n");
|
3391 |
} |
3392 |
} |
3393 |
cpu_fprintf(f, "\n\n");
|
3394 |
|
3395 |
} |
3396 |
|
3397 |
CPUCRISState *cpu_cris_init (const char *cpu_model) |
3398 |
{ |
3399 |
CPUCRISState *env; |
3400 |
static int tcg_initialized = 0; |
3401 |
int i;
|
3402 |
|
3403 |
env = qemu_mallocz(sizeof(CPUCRISState));
|
3404 |
|
3405 |
cpu_exec_init(env); |
3406 |
cpu_reset(env); |
3407 |
qemu_init_vcpu(env); |
3408 |
|
3409 |
if (tcg_initialized)
|
3410 |
return env;
|
3411 |
|
3412 |
tcg_initialized = 1;
|
3413 |
|
3414 |
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
|
3415 |
cc_x = tcg_global_mem_new(TCG_AREG0, |
3416 |
offsetof(CPUState, cc_x), "cc_x");
|
3417 |
cc_src = tcg_global_mem_new(TCG_AREG0, |
3418 |
offsetof(CPUState, cc_src), "cc_src");
|
3419 |
cc_dest = tcg_global_mem_new(TCG_AREG0, |
3420 |
offsetof(CPUState, cc_dest), |
3421 |
"cc_dest");
|
3422 |
cc_result = tcg_global_mem_new(TCG_AREG0, |
3423 |
offsetof(CPUState, cc_result), |
3424 |
"cc_result");
|
3425 |
cc_op = tcg_global_mem_new(TCG_AREG0, |
3426 |
offsetof(CPUState, cc_op), "cc_op");
|
3427 |
cc_size = tcg_global_mem_new(TCG_AREG0, |
3428 |
offsetof(CPUState, cc_size), |
3429 |
"cc_size");
|
3430 |
cc_mask = tcg_global_mem_new(TCG_AREG0, |
3431 |
offsetof(CPUState, cc_mask), |
3432 |
"cc_mask");
|
3433 |
|
3434 |
env_pc = tcg_global_mem_new(TCG_AREG0, |
3435 |
offsetof(CPUState, pc), |
3436 |
"pc");
|
3437 |
env_btarget = tcg_global_mem_new(TCG_AREG0, |
3438 |
offsetof(CPUState, btarget), |
3439 |
"btarget");
|
3440 |
env_btaken = tcg_global_mem_new(TCG_AREG0, |
3441 |
offsetof(CPUState, btaken), |
3442 |
"btaken");
|
3443 |
for (i = 0; i < 16; i++) { |
3444 |
cpu_R[i] = tcg_global_mem_new(TCG_AREG0, |
3445 |
offsetof(CPUState, regs[i]), |
3446 |
regnames[i]); |
3447 |
} |
3448 |
for (i = 0; i < 16; i++) { |
3449 |
cpu_PR[i] = tcg_global_mem_new(TCG_AREG0, |
3450 |
offsetof(CPUState, pregs[i]), |
3451 |
pregnames[i]); |
3452 |
} |
3453 |
|
3454 |
#define GEN_HELPER 2 |
3455 |
#include "helper.h" |
3456 |
|
3457 |
return env;
|
3458 |
} |
3459 |
|
3460 |
void cpu_reset (CPUCRISState *env)
|
3461 |
{ |
3462 |
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
|
3463 |
qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
|
3464 |
log_cpu_state(env, 0);
|
3465 |
} |
3466 |
|
3467 |
memset(env, 0, offsetof(CPUCRISState, breakpoints));
|
3468 |
tlb_flush(env, 1);
|
3469 |
|
3470 |
env->pregs[PR_VR] = 32;
|
3471 |
#if defined(CONFIG_USER_ONLY)
|
3472 |
/* start in user mode with interrupts enabled. */
|
3473 |
env->pregs[PR_CCS] |= U_FLAG | I_FLAG; |
3474 |
#else
|
3475 |
cris_mmu_init(env); |
3476 |
env->pregs[PR_CCS] = 0;
|
3477 |
#endif
|
3478 |
} |
3479 |
|
3480 |
void gen_pc_load(CPUState *env, struct TranslationBlock *tb, |
3481 |
unsigned long searched_pc, int pc_pos, void *puc) |
3482 |
{ |
3483 |
env->pc = gen_opc_pc[pc_pos]; |
3484 |
} |