root / target-cris / translate.c @ 7267c094
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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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/*
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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 "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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|
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#define GEN_HELPER 1 |
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#include "helper.h" |
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|
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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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|
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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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|
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#define DISAS_SWI 5 |
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|
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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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|
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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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|
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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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|
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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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|
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#include "gen-icount.h" |
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|
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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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|
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/* Decoder. */
|
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unsigned int (*decoder)(struct DisasContext *dc); |
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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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|
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unsigned int size; |
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unsigned int src; |
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unsigned int dst; |
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unsigned int cond; |
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|
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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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|
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int cc_size_uptodate; /* -1 invalid or last written value. */ |
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|
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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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|
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int clear_x; /* Clear x after this insn? */ |
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int clear_prefix; /* Clear prefix after this insn? */ |
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int clear_locked_irq; /* Clear the irq lockout. */ |
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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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|
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#define JMP_NOJMP 0 |
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#define JMP_DIRECT 1 |
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#define JMP_DIRECT_CC 2 |
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#define JMP_INDIRECT 3 |
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int jmp; /* 0=nojmp, 1=direct, 2=indirect. */ |
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uint32_t jmp_pc; |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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
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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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|
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/* Sign extend at translation time. */
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static int sign_extend(unsigned int val, unsigned int width) |
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{
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int sval;
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|
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/* LSL. */
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val <<= 31 - width;
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sval = val; |
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/* ASR. */
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sval >>= 31 - width;
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return sval;
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} |
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|
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static int cris_fetch(DisasContext *dc, uint32_t addr, |
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unsigned int size, unsigned int sign) |
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{
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int r;
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|
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switch (size) {
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case 4: |
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{
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r = ldl_code(addr); |
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break;
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} |
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case 2: |
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{
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if (sign) {
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r = ldsw_code(addr); |
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} else {
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r = lduw_code(addr); |
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} |
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break;
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} |
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case 1: |
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{
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if (sign) {
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r = ldsb_code(addr); |
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} else {
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r = ldub_code(addr); |
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} |
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break;
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} |
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default:
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cpu_abort(dc->env, "Invalid fetch size %d\n", size);
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break;
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} |
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return r;
|
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} |
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|
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static void cris_lock_irq(DisasContext *dc) |
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{
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dc->clear_locked_irq = 0;
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t_gen_mov_env_TN(locked_irq, tcg_const_tl(1));
|
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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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|
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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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|
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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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|
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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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|
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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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|
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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); |
| 315 |
|
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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); |
| 319 |
tcg_gen_and_tl(t0, t0, d); |
| 320 |
tcg_gen_xor_tl(d, d, t0); |
| 321 |
tcg_temp_free(t0); |
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tcg_temp_free(t_31); |
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} |
| 324 |
|
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static void t_gen_asr(TCGv d, TCGv a, TCGv b) |
| 326 |
{
|
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TCGv t0, t_31; |
| 328 |
|
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t0 = tcg_temp_new(); |
| 330 |
t_31 = tcg_temp_new(); |
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tcg_gen_sar_tl(d, a, b); |
| 332 |
|
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tcg_gen_movi_tl(t_31, 31);
|
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tcg_gen_sub_tl(t0, t_31, b); |
| 335 |
tcg_gen_sar_tl(t0, t0, t_31); |
| 336 |
tcg_gen_or_tl(d, d, t0); |
| 337 |
tcg_temp_free(t0); |
| 338 |
tcg_temp_free(t_31); |
| 339 |
} |
| 340 |
|
| 341 |
/* 64-bit signed mul, lower result in d and upper in d2. */
|
| 342 |
static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b) |
| 343 |
{
|
| 344 |
TCGv_i64 t0, t1; |
| 345 |
|
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t0 = tcg_temp_new_i64(); |
| 347 |
t1 = tcg_temp_new_i64(); |
| 348 |
|
| 349 |
tcg_gen_ext_i32_i64(t0, a); |
| 350 |
tcg_gen_ext_i32_i64(t1, b); |
| 351 |
tcg_gen_mul_i64(t0, t0, t1); |
| 352 |
|
| 353 |
tcg_gen_trunc_i64_i32(d, t0); |
| 354 |
tcg_gen_shri_i64(t0, t0, 32);
|
| 355 |
tcg_gen_trunc_i64_i32(d2, t0); |
| 356 |
|
| 357 |
tcg_temp_free_i64(t0); |
| 358 |
tcg_temp_free_i64(t1); |
| 359 |
} |
| 360 |
|
| 361 |
/* 64-bit unsigned muls, lower result in d and upper in d2. */
|
| 362 |
static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b) |
| 363 |
{
|
| 364 |
TCGv_i64 t0, t1; |
| 365 |
|
| 366 |
t0 = tcg_temp_new_i64(); |
| 367 |
t1 = tcg_temp_new_i64(); |
| 368 |
|
| 369 |
tcg_gen_extu_i32_i64(t0, a); |
| 370 |
tcg_gen_extu_i32_i64(t1, b); |
| 371 |
tcg_gen_mul_i64(t0, t0, t1); |
| 372 |
|
| 373 |
tcg_gen_trunc_i64_i32(d, t0); |
| 374 |
tcg_gen_shri_i64(t0, t0, 32);
|
| 375 |
tcg_gen_trunc_i64_i32(d2, t0); |
| 376 |
|
| 377 |
tcg_temp_free_i64(t0); |
| 378 |
tcg_temp_free_i64(t1); |
| 379 |
} |
| 380 |
|
| 381 |
static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b) |
| 382 |
{
|
| 383 |
int l1;
|
| 384 |
|
| 385 |
l1 = gen_new_label(); |
| 386 |
|
| 387 |
/*
|
| 388 |
* d <<= 1
|
| 389 |
* if (d >= s)
|
| 390 |
* d -= s;
|
| 391 |
*/
|
| 392 |
tcg_gen_shli_tl(d, a, 1);
|
| 393 |
tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1); |
| 394 |
tcg_gen_sub_tl(d, d, b); |
| 395 |
gen_set_label(l1); |
| 396 |
} |
| 397 |
|
| 398 |
static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs) |
| 399 |
{
|
| 400 |
TCGv t; |
| 401 |
|
| 402 |
/*
|
| 403 |
* d <<= 1
|
| 404 |
* if (n)
|
| 405 |
* d += s;
|
| 406 |
*/
|
| 407 |
t = tcg_temp_new(); |
| 408 |
tcg_gen_shli_tl(d, a, 1);
|
| 409 |
tcg_gen_shli_tl(t, ccs, 31 - 3); |
| 410 |
tcg_gen_sari_tl(t, t, 31);
|
| 411 |
tcg_gen_and_tl(t, t, b); |
| 412 |
tcg_gen_add_tl(d, d, t); |
| 413 |
tcg_temp_free(t); |
| 414 |
} |
| 415 |
|
| 416 |
/* Extended arithmetics on CRIS. */
|
| 417 |
static inline void t_gen_add_flag(TCGv d, int flag) |
| 418 |
{
|
| 419 |
TCGv c; |
| 420 |
|
| 421 |
c = tcg_temp_new(); |
| 422 |
t_gen_mov_TN_preg(c, PR_CCS); |
| 423 |
/* Propagate carry into d. */
|
| 424 |
tcg_gen_andi_tl(c, c, 1 << flag);
|
| 425 |
if (flag)
|
| 426 |
tcg_gen_shri_tl(c, c, flag); |
| 427 |
tcg_gen_add_tl(d, d, c); |
| 428 |
tcg_temp_free(c); |
| 429 |
} |
| 430 |
|
| 431 |
static inline void t_gen_addx_carry(DisasContext *dc, TCGv d) |
| 432 |
{
|
| 433 |
if (dc->flagx_known) {
|
| 434 |
if (dc->flags_x) {
|
| 435 |
TCGv c; |
| 436 |
|
| 437 |
c = tcg_temp_new(); |
| 438 |
t_gen_mov_TN_preg(c, PR_CCS); |
| 439 |
/* C flag is already at bit 0. */
|
| 440 |
tcg_gen_andi_tl(c, c, C_FLAG); |
| 441 |
tcg_gen_add_tl(d, d, c); |
| 442 |
tcg_temp_free(c); |
| 443 |
} |
| 444 |
} else {
|
| 445 |
TCGv x, c; |
| 446 |
|
| 447 |
x = tcg_temp_new(); |
| 448 |
c = tcg_temp_new(); |
| 449 |
t_gen_mov_TN_preg(x, PR_CCS); |
| 450 |
tcg_gen_mov_tl(c, x); |
| 451 |
|
| 452 |
/* Propagate carry into d if X is set. Branch free. */
|
| 453 |
tcg_gen_andi_tl(c, c, C_FLAG); |
| 454 |
tcg_gen_andi_tl(x, x, X_FLAG); |
| 455 |
tcg_gen_shri_tl(x, x, 4);
|
| 456 |
|
| 457 |
tcg_gen_and_tl(x, x, c); |
| 458 |
tcg_gen_add_tl(d, d, x); |
| 459 |
tcg_temp_free(x); |
| 460 |
tcg_temp_free(c); |
| 461 |
} |
| 462 |
} |
| 463 |
|
| 464 |
static inline void t_gen_subx_carry(DisasContext *dc, TCGv d) |
| 465 |
{
|
| 466 |
if (dc->flagx_known) {
|
| 467 |
if (dc->flags_x) {
|
| 468 |
TCGv c; |
| 469 |
|
| 470 |
c = tcg_temp_new(); |
| 471 |
t_gen_mov_TN_preg(c, PR_CCS); |
| 472 |
/* C flag is already at bit 0. */
|
| 473 |
tcg_gen_andi_tl(c, c, C_FLAG); |
| 474 |
tcg_gen_sub_tl(d, d, c); |
| 475 |
tcg_temp_free(c); |
| 476 |
} |
| 477 |
} else {
|
| 478 |
TCGv x, c; |
| 479 |
|
| 480 |
x = tcg_temp_new(); |
| 481 |
c = tcg_temp_new(); |
| 482 |
t_gen_mov_TN_preg(x, PR_CCS); |
| 483 |
tcg_gen_mov_tl(c, x); |
| 484 |
|
| 485 |
/* Propagate carry into d if X is set. Branch free. */
|
| 486 |
tcg_gen_andi_tl(c, c, C_FLAG); |
| 487 |
tcg_gen_andi_tl(x, x, X_FLAG); |
| 488 |
tcg_gen_shri_tl(x, x, 4);
|
| 489 |
|
| 490 |
tcg_gen_and_tl(x, x, c); |
| 491 |
tcg_gen_sub_tl(d, d, x); |
| 492 |
tcg_temp_free(x); |
| 493 |
tcg_temp_free(c); |
| 494 |
} |
| 495 |
} |
| 496 |
|
| 497 |
/* Swap the two bytes within each half word of the s operand.
|
| 498 |
T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
|
| 499 |
static inline void t_gen_swapb(TCGv d, TCGv s) |
| 500 |
{
|
| 501 |
TCGv t, org_s; |
| 502 |
|
| 503 |
t = tcg_temp_new(); |
| 504 |
org_s = tcg_temp_new(); |
| 505 |
|
| 506 |
/* d and s may refer to the same object. */
|
| 507 |
tcg_gen_mov_tl(org_s, s); |
| 508 |
tcg_gen_shli_tl(t, org_s, 8);
|
| 509 |
tcg_gen_andi_tl(d, t, 0xff00ff00);
|
| 510 |
tcg_gen_shri_tl(t, org_s, 8);
|
| 511 |
tcg_gen_andi_tl(t, t, 0x00ff00ff);
|
| 512 |
tcg_gen_or_tl(d, d, t); |
| 513 |
tcg_temp_free(t); |
| 514 |
tcg_temp_free(org_s); |
| 515 |
} |
| 516 |
|
| 517 |
/* Swap the halfwords of the s operand. */
|
| 518 |
static inline void t_gen_swapw(TCGv d, TCGv s) |
| 519 |
{
|
| 520 |
TCGv t; |
| 521 |
/* d and s refer the same object. */
|
| 522 |
t = tcg_temp_new(); |
| 523 |
tcg_gen_mov_tl(t, s); |
| 524 |
tcg_gen_shli_tl(d, t, 16);
|
| 525 |
tcg_gen_shri_tl(t, t, 16);
|
| 526 |
tcg_gen_or_tl(d, d, t); |
| 527 |
tcg_temp_free(t); |
| 528 |
} |
| 529 |
|
| 530 |
/* Reverse the within each byte.
|
| 531 |
T0 = (((T0 << 7) & 0x80808080) |
|
| 532 |
((T0 << 5) & 0x40404040) |
|
| 533 |
((T0 << 3) & 0x20202020) |
|
| 534 |
((T0 << 1) & 0x10101010) |
|
| 535 |
((T0 >> 1) & 0x08080808) |
|
| 536 |
((T0 >> 3) & 0x04040404) |
|
| 537 |
((T0 >> 5) & 0x02020202) |
|
| 538 |
((T0 >> 7) & 0x01010101));
|
| 539 |
*/
|
| 540 |
static inline void t_gen_swapr(TCGv d, TCGv s) |
| 541 |
{
|
| 542 |
struct {
|
| 543 |
int shift; /* LSL when positive, LSR when negative. */ |
| 544 |
uint32_t mask; |
| 545 |
} bitrev [] = {
|
| 546 |
{7, 0x80808080},
|
| 547 |
{5, 0x40404040},
|
| 548 |
{3, 0x20202020},
|
| 549 |
{1, 0x10101010},
|
| 550 |
{-1, 0x08080808},
|
| 551 |
{-3, 0x04040404},
|
| 552 |
{-5, 0x02020202},
|
| 553 |
{-7, 0x01010101}
|
| 554 |
}; |
| 555 |
int i;
|
| 556 |
TCGv t, org_s; |
| 557 |
|
| 558 |
/* d and s refer the same object. */
|
| 559 |
t = tcg_temp_new(); |
| 560 |
org_s = tcg_temp_new(); |
| 561 |
tcg_gen_mov_tl(org_s, s); |
| 562 |
|
| 563 |
tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
|
| 564 |
tcg_gen_andi_tl(d, t, bitrev[0].mask);
|
| 565 |
for (i = 1; i < ARRAY_SIZE(bitrev); i++) { |
| 566 |
if (bitrev[i].shift >= 0) { |
| 567 |
tcg_gen_shli_tl(t, org_s, bitrev[i].shift); |
| 568 |
} else {
|
| 569 |
tcg_gen_shri_tl(t, org_s, -bitrev[i].shift); |
| 570 |
} |
| 571 |
tcg_gen_andi_tl(t, t, bitrev[i].mask); |
| 572 |
tcg_gen_or_tl(d, d, t); |
| 573 |
} |
| 574 |
tcg_temp_free(t); |
| 575 |
tcg_temp_free(org_s); |
| 576 |
} |
| 577 |
|
| 578 |
static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false) |
| 579 |
{
|
| 580 |
int l1;
|
| 581 |
|
| 582 |
l1 = gen_new_label(); |
| 583 |
|
| 584 |
/* Conditional jmp. */
|
| 585 |
tcg_gen_mov_tl(env_pc, pc_false); |
| 586 |
tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
|
| 587 |
tcg_gen_mov_tl(env_pc, pc_true); |
| 588 |
gen_set_label(l1); |
| 589 |
} |
| 590 |
|
| 591 |
static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) |
| 592 |
{
|
| 593 |
TranslationBlock *tb; |
| 594 |
tb = dc->tb; |
| 595 |
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
|
| 596 |
tcg_gen_goto_tb(n); |
| 597 |
tcg_gen_movi_tl(env_pc, dest); |
| 598 |
tcg_gen_exit_tb((tcg_target_long)tb + n); |
| 599 |
} else {
|
| 600 |
tcg_gen_movi_tl(env_pc, dest); |
| 601 |
tcg_gen_exit_tb(0);
|
| 602 |
} |
| 603 |
} |
| 604 |
|
| 605 |
static inline void cris_clear_x_flag(DisasContext *dc) |
| 606 |
{
|
| 607 |
if (dc->flagx_known && dc->flags_x)
|
| 608 |
dc->flags_uptodate = 0;
|
| 609 |
|
| 610 |
dc->flagx_known = 1;
|
| 611 |
dc->flags_x = 0;
|
| 612 |
} |
| 613 |
|
| 614 |
static void cris_flush_cc_state(DisasContext *dc) |
| 615 |
{
|
| 616 |
if (dc->cc_size_uptodate != dc->cc_size) {
|
| 617 |
tcg_gen_movi_tl(cc_size, dc->cc_size); |
| 618 |
dc->cc_size_uptodate = dc->cc_size; |
| 619 |
} |
| 620 |
tcg_gen_movi_tl(cc_op, dc->cc_op); |
| 621 |
tcg_gen_movi_tl(cc_mask, dc->cc_mask); |
| 622 |
} |
| 623 |
|
| 624 |
static void cris_evaluate_flags(DisasContext *dc) |
| 625 |
{
|
| 626 |
if (dc->flags_uptodate)
|
| 627 |
return;
|
| 628 |
|
| 629 |
cris_flush_cc_state(dc); |
| 630 |
|
| 631 |
switch (dc->cc_op)
|
| 632 |
{
|
| 633 |
case CC_OP_MCP:
|
| 634 |
gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], |
| 635 |
cpu_PR[PR_CCS], cc_src, |
| 636 |
cc_dest, cc_result); |
| 637 |
break;
|
| 638 |
case CC_OP_MULS:
|
| 639 |
gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], |
| 640 |
cpu_PR[PR_CCS], cc_result, |
| 641 |
cpu_PR[PR_MOF]); |
| 642 |
break;
|
| 643 |
case CC_OP_MULU:
|
| 644 |
gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], |
| 645 |
cpu_PR[PR_CCS], cc_result, |
| 646 |
cpu_PR[PR_MOF]); |
| 647 |
break;
|
| 648 |
case CC_OP_MOVE:
|
| 649 |
case CC_OP_AND:
|
| 650 |
case CC_OP_OR:
|
| 651 |
case CC_OP_XOR:
|
| 652 |
case CC_OP_ASR:
|
| 653 |
case CC_OP_LSR:
|
| 654 |
case CC_OP_LSL:
|
| 655 |
switch (dc->cc_size)
|
| 656 |
{
|
| 657 |
case 4: |
| 658 |
gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS], |
| 659 |
cpu_PR[PR_CCS], cc_result); |
| 660 |
break;
|
| 661 |
case 2: |
| 662 |
gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS], |
| 663 |
cpu_PR[PR_CCS], cc_result); |
| 664 |
break;
|
| 665 |
default:
|
| 666 |
gen_helper_evaluate_flags(); |
| 667 |
break;
|
| 668 |
} |
| 669 |
break;
|
| 670 |
case CC_OP_FLAGS:
|
| 671 |
/* live. */
|
| 672 |
break;
|
| 673 |
case CC_OP_SUB:
|
| 674 |
case CC_OP_CMP:
|
| 675 |
if (dc->cc_size == 4) |
| 676 |
gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], |
| 677 |
cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); |
| 678 |
else
|
| 679 |
gen_helper_evaluate_flags(); |
| 680 |
|
| 681 |
break;
|
| 682 |
default:
|
| 683 |
switch (dc->cc_size)
|
| 684 |
{
|
| 685 |
case 4: |
| 686 |
gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], |
| 687 |
cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); |
| 688 |
break;
|
| 689 |
default:
|
| 690 |
gen_helper_evaluate_flags(); |
| 691 |
break;
|
| 692 |
} |
| 693 |
break;
|
| 694 |
} |
| 695 |
|
| 696 |
if (dc->flagx_known) {
|
| 697 |
if (dc->flags_x)
|
| 698 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], |
| 699 |
cpu_PR[PR_CCS], X_FLAG); |
| 700 |
else if (dc->cc_op == CC_OP_FLAGS) |
| 701 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], |
| 702 |
cpu_PR[PR_CCS], ~X_FLAG); |
| 703 |
} |
| 704 |
dc->flags_uptodate = 1;
|
| 705 |
} |
| 706 |
|
| 707 |
static void cris_cc_mask(DisasContext *dc, unsigned int mask) |
| 708 |
{
|
| 709 |
uint32_t ovl; |
| 710 |
|
| 711 |
if (!mask) {
|
| 712 |
dc->update_cc = 0;
|
| 713 |
return;
|
| 714 |
} |
| 715 |
|
| 716 |
/* Check if we need to evaluate the condition codes due to
|
| 717 |
CC overlaying. */
|
| 718 |
ovl = (dc->cc_mask ^ mask) & ~mask; |
| 719 |
if (ovl) {
|
| 720 |
/* TODO: optimize this case. It trigs all the time. */
|
| 721 |
cris_evaluate_flags (dc); |
| 722 |
} |
| 723 |
dc->cc_mask = mask; |
| 724 |
dc->update_cc = 1;
|
| 725 |
} |
| 726 |
|
| 727 |
static void cris_update_cc_op(DisasContext *dc, int op, int size) |
| 728 |
{
|
| 729 |
dc->cc_op = op; |
| 730 |
dc->cc_size = size; |
| 731 |
dc->flags_uptodate = 0;
|
| 732 |
} |
| 733 |
|
| 734 |
static inline void cris_update_cc_x(DisasContext *dc) |
| 735 |
{
|
| 736 |
/* Save the x flag state at the time of the cc snapshot. */
|
| 737 |
if (dc->flagx_known) {
|
| 738 |
if (dc->cc_x_uptodate == (2 | dc->flags_x)) |
| 739 |
return;
|
| 740 |
tcg_gen_movi_tl(cc_x, dc->flags_x); |
| 741 |
dc->cc_x_uptodate = 2 | dc->flags_x;
|
| 742 |
} |
| 743 |
else {
|
| 744 |
tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG); |
| 745 |
dc->cc_x_uptodate = 1;
|
| 746 |
} |
| 747 |
} |
| 748 |
|
| 749 |
/* Update cc prior to executing ALU op. Needs source operands untouched. */
|
| 750 |
static void cris_pre_alu_update_cc(DisasContext *dc, int op, |
| 751 |
TCGv dst, TCGv src, int size)
|
| 752 |
{
|
| 753 |
if (dc->update_cc) {
|
| 754 |
cris_update_cc_op(dc, op, size); |
| 755 |
tcg_gen_mov_tl(cc_src, src); |
| 756 |
|
| 757 |
if (op != CC_OP_MOVE
|
| 758 |
&& op != CC_OP_AND |
| 759 |
&& op != CC_OP_OR |
| 760 |
&& op != CC_OP_XOR |
| 761 |
&& op != CC_OP_ASR |
| 762 |
&& op != CC_OP_LSR |
| 763 |
&& op != CC_OP_LSL) |
| 764 |
tcg_gen_mov_tl(cc_dest, dst); |
| 765 |
|
| 766 |
cris_update_cc_x(dc); |
| 767 |
} |
| 768 |
} |
| 769 |
|
| 770 |
/* Update cc after executing ALU op. needs the result. */
|
| 771 |
static inline void cris_update_result(DisasContext *dc, TCGv res) |
| 772 |
{
|
| 773 |
if (dc->update_cc)
|
| 774 |
tcg_gen_mov_tl(cc_result, res); |
| 775 |
} |
| 776 |
|
| 777 |
/* Returns one if the write back stage should execute. */
|
| 778 |
static void cris_alu_op_exec(DisasContext *dc, int op, |
| 779 |
TCGv dst, TCGv a, TCGv b, int size)
|
| 780 |
{
|
| 781 |
/* Emit the ALU insns. */
|
| 782 |
switch (op)
|
| 783 |
{
|
| 784 |
case CC_OP_ADD:
|
| 785 |
tcg_gen_add_tl(dst, a, b); |
| 786 |
/* Extended arithmetics. */
|
| 787 |
t_gen_addx_carry(dc, dst); |
| 788 |
break;
|
| 789 |
case CC_OP_ADDC:
|
| 790 |
tcg_gen_add_tl(dst, a, b); |
| 791 |
t_gen_add_flag(dst, 0); /* C_FLAG. */ |
| 792 |
break;
|
| 793 |
case CC_OP_MCP:
|
| 794 |
tcg_gen_add_tl(dst, a, b); |
| 795 |
t_gen_add_flag(dst, 8); /* R_FLAG. */ |
| 796 |
break;
|
| 797 |
case CC_OP_SUB:
|
| 798 |
tcg_gen_sub_tl(dst, a, b); |
| 799 |
/* Extended arithmetics. */
|
| 800 |
t_gen_subx_carry(dc, dst); |
| 801 |
break;
|
| 802 |
case CC_OP_MOVE:
|
| 803 |
tcg_gen_mov_tl(dst, b); |
| 804 |
break;
|
| 805 |
case CC_OP_OR:
|
| 806 |
tcg_gen_or_tl(dst, a, b); |
| 807 |
break;
|
| 808 |
case CC_OP_AND:
|
| 809 |
tcg_gen_and_tl(dst, a, b); |
| 810 |
break;
|
| 811 |
case CC_OP_XOR:
|
| 812 |
tcg_gen_xor_tl(dst, a, b); |
| 813 |
break;
|
| 814 |
case CC_OP_LSL:
|
| 815 |
t_gen_lsl(dst, a, b); |
| 816 |
break;
|
| 817 |
case CC_OP_LSR:
|
| 818 |
t_gen_lsr(dst, a, b); |
| 819 |
break;
|
| 820 |
case CC_OP_ASR:
|
| 821 |
t_gen_asr(dst, a, b); |
| 822 |
break;
|
| 823 |
case CC_OP_NEG:
|
| 824 |
tcg_gen_neg_tl(dst, b); |
| 825 |
/* Extended arithmetics. */
|
| 826 |
t_gen_subx_carry(dc, dst); |
| 827 |
break;
|
| 828 |
case CC_OP_LZ:
|
| 829 |
gen_helper_lz(dst, b); |
| 830 |
break;
|
| 831 |
case CC_OP_MULS:
|
| 832 |
t_gen_muls(dst, cpu_PR[PR_MOF], a, b); |
| 833 |
break;
|
| 834 |
case CC_OP_MULU:
|
| 835 |
t_gen_mulu(dst, cpu_PR[PR_MOF], a, b); |
| 836 |
break;
|
| 837 |
case CC_OP_DSTEP:
|
| 838 |
t_gen_cris_dstep(dst, a, b); |
| 839 |
break;
|
| 840 |
case CC_OP_MSTEP:
|
| 841 |
t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]); |
| 842 |
break;
|
| 843 |
case CC_OP_BOUND:
|
| 844 |
{
|
| 845 |
int l1;
|
| 846 |
l1 = gen_new_label(); |
| 847 |
tcg_gen_mov_tl(dst, a); |
| 848 |
tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1); |
| 849 |
tcg_gen_mov_tl(dst, b); |
| 850 |
gen_set_label(l1); |
| 851 |
} |
| 852 |
break;
|
| 853 |
case CC_OP_CMP:
|
| 854 |
tcg_gen_sub_tl(dst, a, b); |
| 855 |
/* Extended arithmetics. */
|
| 856 |
t_gen_subx_carry(dc, dst); |
| 857 |
break;
|
| 858 |
default:
|
| 859 |
qemu_log("illegal ALU op.\n");
|
| 860 |
BUG(); |
| 861 |
break;
|
| 862 |
} |
| 863 |
|
| 864 |
if (size == 1) |
| 865 |
tcg_gen_andi_tl(dst, dst, 0xff);
|
| 866 |
else if (size == 2) |
| 867 |
tcg_gen_andi_tl(dst, dst, 0xffff);
|
| 868 |
} |
| 869 |
|
| 870 |
static void cris_alu(DisasContext *dc, int op, |
| 871 |
TCGv d, TCGv op_a, TCGv op_b, int size)
|
| 872 |
{
|
| 873 |
TCGv tmp; |
| 874 |
int writeback;
|
| 875 |
|
| 876 |
writeback = 1;
|
| 877 |
|
| 878 |
if (op == CC_OP_CMP) {
|
| 879 |
tmp = tcg_temp_new(); |
| 880 |
writeback = 0;
|
| 881 |
} else if (size == 4) { |
| 882 |
tmp = d; |
| 883 |
writeback = 0;
|
| 884 |
} else
|
| 885 |
tmp = tcg_temp_new(); |
| 886 |
|
| 887 |
|
| 888 |
cris_pre_alu_update_cc(dc, op, op_a, op_b, size); |
| 889 |
cris_alu_op_exec(dc, op, tmp, op_a, op_b, size); |
| 890 |
cris_update_result(dc, tmp); |
| 891 |
|
| 892 |
/* Writeback. */
|
| 893 |
if (writeback) {
|
| 894 |
if (size == 1) |
| 895 |
tcg_gen_andi_tl(d, d, ~0xff);
|
| 896 |
else
|
| 897 |
tcg_gen_andi_tl(d, d, ~0xffff);
|
| 898 |
tcg_gen_or_tl(d, d, tmp); |
| 899 |
} |
| 900 |
if (!TCGV_EQUAL(tmp, d))
|
| 901 |
tcg_temp_free(tmp); |
| 902 |
} |
| 903 |
|
| 904 |
static int arith_cc(DisasContext *dc) |
| 905 |
{
|
| 906 |
if (dc->update_cc) {
|
| 907 |
switch (dc->cc_op) {
|
| 908 |
case CC_OP_ADDC: return 1; |
| 909 |
case CC_OP_ADD: return 1; |
| 910 |
case CC_OP_SUB: return 1; |
| 911 |
case CC_OP_DSTEP: return 1; |
| 912 |
case CC_OP_LSL: return 1; |
| 913 |
case CC_OP_LSR: return 1; |
| 914 |
case CC_OP_ASR: return 1; |
| 915 |
case CC_OP_CMP: return 1; |
| 916 |
case CC_OP_NEG: return 1; |
| 917 |
case CC_OP_OR: return 1; |
| 918 |
case CC_OP_AND: return 1; |
| 919 |
case CC_OP_XOR: return 1; |
| 920 |
case CC_OP_MULU: return 1; |
| 921 |
case CC_OP_MULS: return 1; |
| 922 |
default:
|
| 923 |
return 0; |
| 924 |
} |
| 925 |
} |
| 926 |
return 0; |
| 927 |
} |
| 928 |
|
| 929 |
static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond) |
| 930 |
{
|
| 931 |
int arith_opt, move_opt;
|
| 932 |
|
| 933 |
/* TODO: optimize more condition codes. */
|
| 934 |
|
| 935 |
/*
|
| 936 |
* If the flags are live, we've gotta look into the bits of CCS.
|
| 937 |
* Otherwise, if we just did an arithmetic operation we try to
|
| 938 |
* evaluate the condition code faster.
|
| 939 |
*
|
| 940 |
* When this function is done, T0 should be non-zero if the condition
|
| 941 |
* code is true.
|
| 942 |
*/
|
| 943 |
arith_opt = arith_cc(dc) && !dc->flags_uptodate; |
| 944 |
move_opt = (dc->cc_op == CC_OP_MOVE); |
| 945 |
switch (cond) {
|
| 946 |
case CC_EQ:
|
| 947 |
if ((arith_opt || move_opt)
|
| 948 |
&& dc->cc_x_uptodate != (2 | X_FLAG)) {
|
| 949 |
tcg_gen_setcond_tl(TCG_COND_EQ, cc, |
| 950 |
cc_result, tcg_const_tl(0));
|
| 951 |
} |
| 952 |
else {
|
| 953 |
cris_evaluate_flags(dc); |
| 954 |
tcg_gen_andi_tl(cc, |
| 955 |
cpu_PR[PR_CCS], Z_FLAG); |
| 956 |
} |
| 957 |
break;
|
| 958 |
case CC_NE:
|
| 959 |
if ((arith_opt || move_opt)
|
| 960 |
&& dc->cc_x_uptodate != (2 | X_FLAG)) {
|
| 961 |
tcg_gen_mov_tl(cc, cc_result); |
| 962 |
} else {
|
| 963 |
cris_evaluate_flags(dc); |
| 964 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], |
| 965 |
Z_FLAG); |
| 966 |
tcg_gen_andi_tl(cc, cc, Z_FLAG); |
| 967 |
} |
| 968 |
break;
|
| 969 |
case CC_CS:
|
| 970 |
cris_evaluate_flags(dc); |
| 971 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG); |
| 972 |
break;
|
| 973 |
case CC_CC:
|
| 974 |
cris_evaluate_flags(dc); |
| 975 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG); |
| 976 |
tcg_gen_andi_tl(cc, cc, C_FLAG); |
| 977 |
break;
|
| 978 |
case CC_VS:
|
| 979 |
cris_evaluate_flags(dc); |
| 980 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG); |
| 981 |
break;
|
| 982 |
case CC_VC:
|
| 983 |
cris_evaluate_flags(dc); |
| 984 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], |
| 985 |
V_FLAG); |
| 986 |
tcg_gen_andi_tl(cc, cc, V_FLAG); |
| 987 |
break;
|
| 988 |
case CC_PL:
|
| 989 |
if (arith_opt || move_opt) {
|
| 990 |
int bits = 31; |
| 991 |
|
| 992 |
if (dc->cc_size == 1) |
| 993 |
bits = 7;
|
| 994 |
else if (dc->cc_size == 2) |
| 995 |
bits = 15;
|
| 996 |
|
| 997 |
tcg_gen_shri_tl(cc, cc_result, bits); |
| 998 |
tcg_gen_xori_tl(cc, cc, 1);
|
| 999 |
} else {
|
| 1000 |
cris_evaluate_flags(dc); |
| 1001 |
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], |
| 1002 |
N_FLAG); |
| 1003 |
tcg_gen_andi_tl(cc, cc, N_FLAG); |
| 1004 |
} |
| 1005 |
break;
|
| 1006 |
case CC_MI:
|
| 1007 |
if (arith_opt || move_opt) {
|
| 1008 |
int bits = 31; |
| 1009 |
|
| 1010 |
if (dc->cc_size == 1) |
| 1011 |
bits = 7;
|
| 1012 |
else if (dc->cc_size == 2) |
| 1013 |
bits = 15;
|
| 1014 |
|
| 1015 |
tcg_gen_shri_tl(cc, cc_result, bits); |
| 1016 |
tcg_gen_andi_tl(cc, cc, 1);
|
| 1017 |
} |
| 1018 |
else {
|
| 1019 |
cris_evaluate_flags(dc); |
| 1020 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], |
| 1021 |
N_FLAG); |
| 1022 |
} |
| 1023 |
break;
|
| 1024 |
case CC_LS:
|
| 1025 |
cris_evaluate_flags(dc); |
| 1026 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], |
| 1027 |
C_FLAG | Z_FLAG); |
| 1028 |
break;
|
| 1029 |
case CC_HI:
|
| 1030 |
cris_evaluate_flags(dc); |
| 1031 |
{
|
| 1032 |
TCGv tmp; |
| 1033 |
|
| 1034 |
tmp = tcg_temp_new(); |
| 1035 |
tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS], |
| 1036 |
C_FLAG | Z_FLAG); |
| 1037 |
/* Overlay the C flag on top of the Z. */
|
| 1038 |
tcg_gen_shli_tl(cc, tmp, 2);
|
| 1039 |
tcg_gen_and_tl(cc, tmp, cc); |
| 1040 |
tcg_gen_andi_tl(cc, cc, Z_FLAG); |
| 1041 |
|
| 1042 |
tcg_temp_free(tmp); |
| 1043 |
} |
| 1044 |
break;
|
| 1045 |
case CC_GE:
|
| 1046 |
cris_evaluate_flags(dc); |
| 1047 |
/* Overlay the V flag on top of the N. */
|
| 1048 |
tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
|
| 1049 |
tcg_gen_xor_tl(cc, |
| 1050 |
cpu_PR[PR_CCS], cc); |
| 1051 |
tcg_gen_andi_tl(cc, cc, N_FLAG); |
| 1052 |
tcg_gen_xori_tl(cc, cc, N_FLAG); |
| 1053 |
break;
|
| 1054 |
case CC_LT:
|
| 1055 |
cris_evaluate_flags(dc); |
| 1056 |
/* Overlay the V flag on top of the N. */
|
| 1057 |
tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
|
| 1058 |
tcg_gen_xor_tl(cc, |
| 1059 |
cpu_PR[PR_CCS], cc); |
| 1060 |
tcg_gen_andi_tl(cc, cc, N_FLAG); |
| 1061 |
break;
|
| 1062 |
case CC_GT:
|
| 1063 |
cris_evaluate_flags(dc); |
| 1064 |
{
|
| 1065 |
TCGv n, z; |
| 1066 |
|
| 1067 |
n = tcg_temp_new(); |
| 1068 |
z = tcg_temp_new(); |
| 1069 |
|
| 1070 |
/* To avoid a shift we overlay everything on
|
| 1071 |
the V flag. */
|
| 1072 |
tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
|
| 1073 |
tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
|
| 1074 |
/* invert Z. */
|
| 1075 |
tcg_gen_xori_tl(z, z, 2);
|
| 1076 |
|
| 1077 |
tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); |
| 1078 |
tcg_gen_xori_tl(n, n, 2);
|
| 1079 |
tcg_gen_and_tl(cc, z, n); |
| 1080 |
tcg_gen_andi_tl(cc, cc, 2);
|
| 1081 |
|
| 1082 |
tcg_temp_free(n); |
| 1083 |
tcg_temp_free(z); |
| 1084 |
} |
| 1085 |
break;
|
| 1086 |
case CC_LE:
|
| 1087 |
cris_evaluate_flags(dc); |
| 1088 |
{
|
| 1089 |
TCGv n, z; |
| 1090 |
|
| 1091 |
n = tcg_temp_new(); |
| 1092 |
z = tcg_temp_new(); |
| 1093 |
|
| 1094 |
/* To avoid a shift we overlay everything on
|
| 1095 |
the V flag. */
|
| 1096 |
tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
|
| 1097 |
tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
|
| 1098 |
|
| 1099 |
tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); |
| 1100 |
tcg_gen_or_tl(cc, z, n); |
| 1101 |
tcg_gen_andi_tl(cc, cc, 2);
|
| 1102 |
|
| 1103 |
tcg_temp_free(n); |
| 1104 |
tcg_temp_free(z); |
| 1105 |
} |
| 1106 |
break;
|
| 1107 |
case CC_P:
|
| 1108 |
cris_evaluate_flags(dc); |
| 1109 |
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG); |
| 1110 |
break;
|
| 1111 |
case CC_A:
|
| 1112 |
tcg_gen_movi_tl(cc, 1);
|
| 1113 |
break;
|
| 1114 |
default:
|
| 1115 |
BUG(); |
| 1116 |
break;
|
| 1117 |
}; |
| 1118 |
} |
| 1119 |
|
| 1120 |
static void cris_store_direct_jmp(DisasContext *dc) |
| 1121 |
{
|
| 1122 |
/* Store the direct jmp state into the cpu-state. */
|
| 1123 |
if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
|
| 1124 |
if (dc->jmp == JMP_DIRECT) {
|
| 1125 |
tcg_gen_movi_tl(env_btaken, 1);
|
| 1126 |
} |
| 1127 |
tcg_gen_movi_tl(env_btarget, dc->jmp_pc); |
| 1128 |
dc->jmp = JMP_INDIRECT; |
| 1129 |
} |
| 1130 |
} |
| 1131 |
|
| 1132 |
static void cris_prepare_cc_branch (DisasContext *dc, |
| 1133 |
int offset, int cond) |
| 1134 |
{
|
| 1135 |
/* This helps us re-schedule the micro-code to insns in delay-slots
|
| 1136 |
before the actual jump. */
|
| 1137 |
dc->delayed_branch = 2;
|
| 1138 |
dc->jmp = JMP_DIRECT_CC; |
| 1139 |
dc->jmp_pc = dc->pc + offset; |
| 1140 |
|
| 1141 |
gen_tst_cc (dc, env_btaken, cond); |
| 1142 |
tcg_gen_movi_tl(env_btarget, dc->jmp_pc); |
| 1143 |
} |
| 1144 |
|
| 1145 |
|
| 1146 |
/* jumps, when the dest is in a live reg for example. Direct should be set
|
| 1147 |
when the dest addr is constant to allow tb chaining. */
|
| 1148 |
static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type) |
| 1149 |
{
|
| 1150 |
/* This helps us re-schedule the micro-code to insns in delay-slots
|
| 1151 |
before the actual jump. */
|
| 1152 |
dc->delayed_branch = 2;
|
| 1153 |
dc->jmp = type; |
| 1154 |
if (type == JMP_INDIRECT) {
|
| 1155 |
tcg_gen_movi_tl(env_btaken, 1);
|
| 1156 |
} |
| 1157 |
} |
| 1158 |
|
| 1159 |
static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr) |
| 1160 |
{
|
| 1161 |
int mem_index = cpu_mmu_index(dc->env);
|
| 1162 |
|
| 1163 |
/* If we get a fault on a delayslot we must keep the jmp state in
|
| 1164 |
the cpu-state to be able to re-execute the jmp. */
|
| 1165 |
if (dc->delayed_branch == 1) |
| 1166 |
cris_store_direct_jmp(dc); |
| 1167 |
|
| 1168 |
tcg_gen_qemu_ld64(dst, addr, mem_index); |
| 1169 |
} |
| 1170 |
|
| 1171 |
static void gen_load(DisasContext *dc, TCGv dst, TCGv addr, |
| 1172 |
unsigned int size, int sign) |
| 1173 |
{
|
| 1174 |
int mem_index = cpu_mmu_index(dc->env);
|
| 1175 |
|
| 1176 |
/* If we get a fault on a delayslot we must keep the jmp state in
|
| 1177 |
the cpu-state to be able to re-execute the jmp. */
|
| 1178 |
if (dc->delayed_branch == 1) |
| 1179 |
cris_store_direct_jmp(dc); |
| 1180 |
|
| 1181 |
if (size == 1) { |
| 1182 |
if (sign)
|
| 1183 |
tcg_gen_qemu_ld8s(dst, addr, mem_index); |
| 1184 |
else
|
| 1185 |
tcg_gen_qemu_ld8u(dst, addr, mem_index); |
| 1186 |
} |
| 1187 |
else if (size == 2) { |
| 1188 |
if (sign)
|
| 1189 |
tcg_gen_qemu_ld16s(dst, addr, mem_index); |
| 1190 |
else
|
| 1191 |
tcg_gen_qemu_ld16u(dst, addr, mem_index); |
| 1192 |
} |
| 1193 |
else if (size == 4) { |
| 1194 |
tcg_gen_qemu_ld32u(dst, addr, mem_index); |
| 1195 |
} |
| 1196 |
else {
|
| 1197 |
abort(); |
| 1198 |
} |
| 1199 |
} |
| 1200 |
|
| 1201 |
static void gen_store (DisasContext *dc, TCGv addr, TCGv val, |
| 1202 |
unsigned int size) |
| 1203 |
{
|
| 1204 |
int mem_index = cpu_mmu_index(dc->env);
|
| 1205 |
|
| 1206 |
/* If we get a fault on a delayslot we must keep the jmp state in
|
| 1207 |
the cpu-state to be able to re-execute the jmp. */
|
| 1208 |
if (dc->delayed_branch == 1) |
| 1209 |
cris_store_direct_jmp(dc); |
| 1210 |
|
| 1211 |
|
| 1212 |
/* Conditional writes. We only support the kind were X and P are known
|
| 1213 |
at translation time. */
|
| 1214 |
if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
|
| 1215 |
dc->postinc = 0;
|
| 1216 |
cris_evaluate_flags(dc); |
| 1217 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG); |
| 1218 |
return;
|
| 1219 |
} |
| 1220 |
|
| 1221 |
if (size == 1) |
| 1222 |
tcg_gen_qemu_st8(val, addr, mem_index); |
| 1223 |
else if (size == 2) |
| 1224 |
tcg_gen_qemu_st16(val, addr, mem_index); |
| 1225 |
else
|
| 1226 |
tcg_gen_qemu_st32(val, addr, mem_index); |
| 1227 |
|
| 1228 |
if (dc->flagx_known && dc->flags_x) {
|
| 1229 |
cris_evaluate_flags(dc); |
| 1230 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG); |
| 1231 |
} |
| 1232 |
} |
| 1233 |
|
| 1234 |
static inline void t_gen_sext(TCGv d, TCGv s, int size) |
| 1235 |
{
|
| 1236 |
if (size == 1) |
| 1237 |
tcg_gen_ext8s_i32(d, s); |
| 1238 |
else if (size == 2) |
| 1239 |
tcg_gen_ext16s_i32(d, s); |
| 1240 |
else if(!TCGV_EQUAL(d, s)) |
| 1241 |
tcg_gen_mov_tl(d, s); |
| 1242 |
} |
| 1243 |
|
| 1244 |
static inline void t_gen_zext(TCGv d, TCGv s, int size) |
| 1245 |
{
|
| 1246 |
if (size == 1) |
| 1247 |
tcg_gen_ext8u_i32(d, s); |
| 1248 |
else if (size == 2) |
| 1249 |
tcg_gen_ext16u_i32(d, s); |
| 1250 |
else if (!TCGV_EQUAL(d, s)) |
| 1251 |
tcg_gen_mov_tl(d, s); |
| 1252 |
} |
| 1253 |
|
| 1254 |
#if DISAS_CRIS
|
| 1255 |
static char memsize_char(int size) |
| 1256 |
{
|
| 1257 |
switch (size)
|
| 1258 |
{
|
| 1259 |
case 1: return 'b'; break; |
| 1260 |
case 2: return 'w'; break; |
| 1261 |
case 4: return 'd'; break; |
| 1262 |
default:
|
| 1263 |
return 'x'; |
| 1264 |
break;
|
| 1265 |
} |
| 1266 |
} |
| 1267 |
#endif
|
| 1268 |
|
| 1269 |
static inline unsigned int memsize_z(DisasContext *dc) |
| 1270 |
{
|
| 1271 |
return dc->zsize + 1; |
| 1272 |
} |
| 1273 |
|
| 1274 |
static inline unsigned int memsize_zz(DisasContext *dc) |
| 1275 |
{
|
| 1276 |
switch (dc->zzsize)
|
| 1277 |
{
|
| 1278 |
case 0: return 1; |
| 1279 |
case 1: return 2; |
| 1280 |
default:
|
| 1281 |
return 4; |
| 1282 |
} |
| 1283 |
} |
| 1284 |
|
| 1285 |
static inline void do_postinc (DisasContext *dc, int size) |
| 1286 |
{
|
| 1287 |
if (dc->postinc)
|
| 1288 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size); |
| 1289 |
} |
| 1290 |
|
| 1291 |
static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd, |
| 1292 |
int size, int s_ext, TCGv dst) |
| 1293 |
{
|
| 1294 |
if (s_ext)
|
| 1295 |
t_gen_sext(dst, cpu_R[rs], size); |
| 1296 |
else
|
| 1297 |
t_gen_zext(dst, cpu_R[rs], size); |
| 1298 |
} |
| 1299 |
|
| 1300 |
/* Prepare T0 and T1 for a register alu operation.
|
| 1301 |
s_ext decides if the operand1 should be sign-extended or zero-extended when
|
| 1302 |
needed. */
|
| 1303 |
static void dec_prep_alu_r(DisasContext *dc, int rs, int rd, |
| 1304 |
int size, int s_ext, TCGv dst, TCGv src) |
| 1305 |
{
|
| 1306 |
dec_prep_move_r(dc, rs, rd, size, s_ext, src); |
| 1307 |
|
| 1308 |
if (s_ext)
|
| 1309 |
t_gen_sext(dst, cpu_R[rd], size); |
| 1310 |
else
|
| 1311 |
t_gen_zext(dst, cpu_R[rd], size); |
| 1312 |
} |
| 1313 |
|
| 1314 |
static int dec_prep_move_m(DisasContext *dc, int s_ext, int memsize, |
| 1315 |
TCGv dst) |
| 1316 |
{
|
| 1317 |
unsigned int rs; |
| 1318 |
uint32_t imm; |
| 1319 |
int is_imm;
|
| 1320 |
int insn_len = 2; |
| 1321 |
|
| 1322 |
rs = dc->op1; |
| 1323 |
is_imm = rs == 15 && dc->postinc;
|
| 1324 |
|
| 1325 |
/* Load [$rs] onto T1. */
|
| 1326 |
if (is_imm) {
|
| 1327 |
insn_len = 2 + memsize;
|
| 1328 |
if (memsize == 1) |
| 1329 |
insn_len++; |
| 1330 |
|
| 1331 |
imm = cris_fetch(dc, dc->pc + 2, memsize, s_ext);
|
| 1332 |
tcg_gen_movi_tl(dst, imm); |
| 1333 |
dc->postinc = 0;
|
| 1334 |
} else {
|
| 1335 |
cris_flush_cc_state(dc); |
| 1336 |
gen_load(dc, dst, cpu_R[rs], memsize, 0);
|
| 1337 |
if (s_ext)
|
| 1338 |
t_gen_sext(dst, dst, memsize); |
| 1339 |
else
|
| 1340 |
t_gen_zext(dst, dst, memsize); |
| 1341 |
} |
| 1342 |
return insn_len;
|
| 1343 |
} |
| 1344 |
|
| 1345 |
/* Prepare T0 and T1 for a memory + alu operation.
|
| 1346 |
s_ext decides if the operand1 should be sign-extended or zero-extended when
|
| 1347 |
needed. */
|
| 1348 |
static int dec_prep_alu_m(DisasContext *dc, int s_ext, int memsize, |
| 1349 |
TCGv dst, TCGv src) |
| 1350 |
{
|
| 1351 |
int insn_len;
|
| 1352 |
|
| 1353 |
insn_len = dec_prep_move_m(dc, s_ext, memsize, src); |
| 1354 |
tcg_gen_mov_tl(dst, cpu_R[dc->op2]); |
| 1355 |
return insn_len;
|
| 1356 |
} |
| 1357 |
|
| 1358 |
#if DISAS_CRIS
|
| 1359 |
static const char *cc_name(int cc) |
| 1360 |
{
|
| 1361 |
static const char *cc_names[16] = { |
| 1362 |
"cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi", |
| 1363 |
"ls", "hi", "ge", "lt", "gt", "le", "a", "p" |
| 1364 |
}; |
| 1365 |
assert(cc < 16);
|
| 1366 |
return cc_names[cc];
|
| 1367 |
} |
| 1368 |
#endif
|
| 1369 |
|
| 1370 |
/* Start of insn decoders. */
|
| 1371 |
|
| 1372 |
static int dec_bccq(DisasContext *dc) |
| 1373 |
{
|
| 1374 |
int32_t offset; |
| 1375 |
int sign;
|
| 1376 |
uint32_t cond = dc->op2; |
| 1377 |
|
| 1378 |
offset = EXTRACT_FIELD (dc->ir, 1, 7); |
| 1379 |
sign = EXTRACT_FIELD(dc->ir, 0, 0); |
| 1380 |
|
| 1381 |
offset *= 2;
|
| 1382 |
offset |= sign << 8;
|
| 1383 |
offset = sign_extend(offset, 8);
|
| 1384 |
|
| 1385 |
LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset);
|
| 1386 |
|
| 1387 |
/* op2 holds the condition-code. */
|
| 1388 |
cris_cc_mask(dc, 0);
|
| 1389 |
cris_prepare_cc_branch (dc, offset, cond); |
| 1390 |
return 2; |
| 1391 |
} |
| 1392 |
static int dec_addoq(DisasContext *dc) |
| 1393 |
{
|
| 1394 |
int32_t imm; |
| 1395 |
|
| 1396 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7); |
| 1397 |
imm = sign_extend(dc->op1, 7);
|
| 1398 |
|
| 1399 |
LOG_DIS("addoq %d, $r%u\n", imm, dc->op2);
|
| 1400 |
cris_cc_mask(dc, 0);
|
| 1401 |
/* Fetch register operand, */
|
| 1402 |
tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm); |
| 1403 |
|
| 1404 |
return 2; |
| 1405 |
} |
| 1406 |
static int dec_addq(DisasContext *dc) |
| 1407 |
{
|
| 1408 |
LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2);
|
| 1409 |
|
| 1410 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
| 1411 |
|
| 1412 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1413 |
|
| 1414 |
cris_alu(dc, CC_OP_ADD, |
| 1415 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
|
| 1416 |
return 2; |
| 1417 |
} |
| 1418 |
static int dec_moveq(DisasContext *dc) |
| 1419 |
{
|
| 1420 |
uint32_t imm; |
| 1421 |
|
| 1422 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
| 1423 |
imm = sign_extend(dc->op1, 5);
|
| 1424 |
LOG_DIS("moveq %d, $r%u\n", imm, dc->op2);
|
| 1425 |
|
| 1426 |
tcg_gen_movi_tl(cpu_R[dc->op2], imm); |
| 1427 |
return 2; |
| 1428 |
} |
| 1429 |
static int dec_subq(DisasContext *dc) |
| 1430 |
{
|
| 1431 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
| 1432 |
|
| 1433 |
LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2);
|
| 1434 |
|
| 1435 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1436 |
cris_alu(dc, CC_OP_SUB, |
| 1437 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
|
| 1438 |
return 2; |
| 1439 |
} |
| 1440 |
static int dec_cmpq(DisasContext *dc) |
| 1441 |
{
|
| 1442 |
uint32_t imm; |
| 1443 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
| 1444 |
imm = sign_extend(dc->op1, 5);
|
| 1445 |
|
| 1446 |
LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2);
|
| 1447 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1448 |
|
| 1449 |
cris_alu(dc, CC_OP_CMP, |
| 1450 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
|
| 1451 |
return 2; |
| 1452 |
} |
| 1453 |
static int dec_andq(DisasContext *dc) |
| 1454 |
{
|
| 1455 |
uint32_t imm; |
| 1456 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
| 1457 |
imm = sign_extend(dc->op1, 5);
|
| 1458 |
|
| 1459 |
LOG_DIS("andq %d, $r%d\n", imm, dc->op2);
|
| 1460 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1461 |
|
| 1462 |
cris_alu(dc, CC_OP_AND, |
| 1463 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
|
| 1464 |
return 2; |
| 1465 |
} |
| 1466 |
static int dec_orq(DisasContext *dc) |
| 1467 |
{
|
| 1468 |
uint32_t imm; |
| 1469 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); |
| 1470 |
imm = sign_extend(dc->op1, 5);
|
| 1471 |
LOG_DIS("orq %d, $r%d\n", imm, dc->op2);
|
| 1472 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1473 |
|
| 1474 |
cris_alu(dc, CC_OP_OR, |
| 1475 |
cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
|
| 1476 |
return 2; |
| 1477 |
} |
| 1478 |
static int dec_btstq(DisasContext *dc) |
| 1479 |
{
|
| 1480 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
| 1481 |
LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2);
|
| 1482 |
|
| 1483 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1484 |
cris_evaluate_flags(dc); |
| 1485 |
gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->op2], |
| 1486 |
tcg_const_tl(dc->op1), cpu_PR[PR_CCS]); |
| 1487 |
cris_alu(dc, CC_OP_MOVE, |
| 1488 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
| 1489 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
| 1490 |
dc->flags_uptodate = 1;
|
| 1491 |
return 2; |
| 1492 |
} |
| 1493 |
static int dec_asrq(DisasContext *dc) |
| 1494 |
{
|
| 1495 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
| 1496 |
LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2);
|
| 1497 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1498 |
|
| 1499 |
tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); |
| 1500 |
cris_alu(dc, CC_OP_MOVE, |
| 1501 |
cpu_R[dc->op2], |
| 1502 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
| 1503 |
return 2; |
| 1504 |
} |
| 1505 |
static int dec_lslq(DisasContext *dc) |
| 1506 |
{
|
| 1507 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
| 1508 |
LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2);
|
| 1509 |
|
| 1510 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1511 |
|
| 1512 |
tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); |
| 1513 |
|
| 1514 |
cris_alu(dc, CC_OP_MOVE, |
| 1515 |
cpu_R[dc->op2], |
| 1516 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
| 1517 |
return 2; |
| 1518 |
} |
| 1519 |
static int dec_lsrq(DisasContext *dc) |
| 1520 |
{
|
| 1521 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); |
| 1522 |
LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2);
|
| 1523 |
|
| 1524 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1525 |
|
| 1526 |
tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); |
| 1527 |
cris_alu(dc, CC_OP_MOVE, |
| 1528 |
cpu_R[dc->op2], |
| 1529 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
| 1530 |
return 2; |
| 1531 |
} |
| 1532 |
|
| 1533 |
static int dec_move_r(DisasContext *dc) |
| 1534 |
{
|
| 1535 |
int size = memsize_zz(dc);
|
| 1536 |
|
| 1537 |
LOG_DIS("move.%c $r%u, $r%u\n",
|
| 1538 |
memsize_char(size), dc->op1, dc->op2); |
| 1539 |
|
| 1540 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1541 |
if (size == 4) { |
| 1542 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
|
| 1543 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1544 |
cris_update_cc_op(dc, CC_OP_MOVE, 4);
|
| 1545 |
cris_update_cc_x(dc); |
| 1546 |
cris_update_result(dc, cpu_R[dc->op2]); |
| 1547 |
} |
| 1548 |
else {
|
| 1549 |
TCGv t0; |
| 1550 |
|
| 1551 |
t0 = tcg_temp_new(); |
| 1552 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
|
| 1553 |
cris_alu(dc, CC_OP_MOVE, |
| 1554 |
cpu_R[dc->op2], |
| 1555 |
cpu_R[dc->op2], t0, size); |
| 1556 |
tcg_temp_free(t0); |
| 1557 |
} |
| 1558 |
return 2; |
| 1559 |
} |
| 1560 |
|
| 1561 |
static int dec_scc_r(DisasContext *dc) |
| 1562 |
{
|
| 1563 |
int cond = dc->op2;
|
| 1564 |
|
| 1565 |
LOG_DIS("s%s $r%u\n",
|
| 1566 |
cc_name(cond), dc->op1); |
| 1567 |
|
| 1568 |
if (cond != CC_A)
|
| 1569 |
{
|
| 1570 |
int l1;
|
| 1571 |
|
| 1572 |
gen_tst_cc (dc, cpu_R[dc->op1], cond); |
| 1573 |
l1 = gen_new_label(); |
| 1574 |
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
|
| 1575 |
tcg_gen_movi_tl(cpu_R[dc->op1], 1);
|
| 1576 |
gen_set_label(l1); |
| 1577 |
} |
| 1578 |
else
|
| 1579 |
tcg_gen_movi_tl(cpu_R[dc->op1], 1);
|
| 1580 |
|
| 1581 |
cris_cc_mask(dc, 0);
|
| 1582 |
return 2; |
| 1583 |
} |
| 1584 |
|
| 1585 |
static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t) |
| 1586 |
{
|
| 1587 |
if (size == 4) { |
| 1588 |
t[0] = cpu_R[dc->op2];
|
| 1589 |
t[1] = cpu_R[dc->op1];
|
| 1590 |
} else {
|
| 1591 |
t[0] = tcg_temp_new();
|
| 1592 |
t[1] = tcg_temp_new();
|
| 1593 |
} |
| 1594 |
} |
| 1595 |
|
| 1596 |
static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t) |
| 1597 |
{
|
| 1598 |
if (size != 4) { |
| 1599 |
tcg_temp_free(t[0]);
|
| 1600 |
tcg_temp_free(t[1]);
|
| 1601 |
} |
| 1602 |
} |
| 1603 |
|
| 1604 |
static int dec_and_r(DisasContext *dc) |
| 1605 |
{
|
| 1606 |
TCGv t[2];
|
| 1607 |
int size = memsize_zz(dc);
|
| 1608 |
|
| 1609 |
LOG_DIS("and.%c $r%u, $r%u\n",
|
| 1610 |
memsize_char(size), dc->op1, dc->op2); |
| 1611 |
|
| 1612 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1613 |
|
| 1614 |
cris_alu_alloc_temps(dc, size, t); |
| 1615 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1616 |
cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size); |
| 1617 |
cris_alu_free_temps(dc, size, t); |
| 1618 |
return 2; |
| 1619 |
} |
| 1620 |
|
| 1621 |
static int dec_lz_r(DisasContext *dc) |
| 1622 |
{
|
| 1623 |
TCGv t0; |
| 1624 |
LOG_DIS("lz $r%u, $r%u\n",
|
| 1625 |
dc->op1, dc->op2); |
| 1626 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1627 |
t0 = tcg_temp_new(); |
| 1628 |
dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0); |
| 1629 |
cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
| 1630 |
tcg_temp_free(t0); |
| 1631 |
return 2; |
| 1632 |
} |
| 1633 |
|
| 1634 |
static int dec_lsl_r(DisasContext *dc) |
| 1635 |
{
|
| 1636 |
TCGv t[2];
|
| 1637 |
int size = memsize_zz(dc);
|
| 1638 |
|
| 1639 |
LOG_DIS("lsl.%c $r%u, $r%u\n",
|
| 1640 |
memsize_char(size), dc->op1, dc->op2); |
| 1641 |
|
| 1642 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1643 |
cris_alu_alloc_temps(dc, size, t); |
| 1644 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1645 |
tcg_gen_andi_tl(t[1], t[1], 63); |
| 1646 |
cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size); |
| 1647 |
cris_alu_alloc_temps(dc, size, t); |
| 1648 |
return 2; |
| 1649 |
} |
| 1650 |
|
| 1651 |
static int dec_lsr_r(DisasContext *dc) |
| 1652 |
{
|
| 1653 |
TCGv t[2];
|
| 1654 |
int size = memsize_zz(dc);
|
| 1655 |
|
| 1656 |
LOG_DIS("lsr.%c $r%u, $r%u\n",
|
| 1657 |
memsize_char(size), dc->op1, dc->op2); |
| 1658 |
|
| 1659 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1660 |
cris_alu_alloc_temps(dc, size, t); |
| 1661 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1662 |
tcg_gen_andi_tl(t[1], t[1], 63); |
| 1663 |
cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size); |
| 1664 |
cris_alu_free_temps(dc, size, t); |
| 1665 |
return 2; |
| 1666 |
} |
| 1667 |
|
| 1668 |
static int dec_asr_r(DisasContext *dc) |
| 1669 |
{
|
| 1670 |
TCGv t[2];
|
| 1671 |
int size = memsize_zz(dc);
|
| 1672 |
|
| 1673 |
LOG_DIS("asr.%c $r%u, $r%u\n",
|
| 1674 |
memsize_char(size), dc->op1, dc->op2); |
| 1675 |
|
| 1676 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1677 |
cris_alu_alloc_temps(dc, size, t); |
| 1678 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); |
| 1679 |
tcg_gen_andi_tl(t[1], t[1], 63); |
| 1680 |
cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size); |
| 1681 |
cris_alu_free_temps(dc, size, t); |
| 1682 |
return 2; |
| 1683 |
} |
| 1684 |
|
| 1685 |
static int dec_muls_r(DisasContext *dc) |
| 1686 |
{
|
| 1687 |
TCGv t[2];
|
| 1688 |
int size = memsize_zz(dc);
|
| 1689 |
|
| 1690 |
LOG_DIS("muls.%c $r%u, $r%u\n",
|
| 1691 |
memsize_char(size), dc->op1, dc->op2); |
| 1692 |
cris_cc_mask(dc, CC_MASK_NZV); |
| 1693 |
cris_alu_alloc_temps(dc, size, t); |
| 1694 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); |
| 1695 |
|
| 1696 |
cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4); |
| 1697 |
cris_alu_free_temps(dc, size, t); |
| 1698 |
return 2; |
| 1699 |
} |
| 1700 |
|
| 1701 |
static int dec_mulu_r(DisasContext *dc) |
| 1702 |
{
|
| 1703 |
TCGv t[2];
|
| 1704 |
int size = memsize_zz(dc);
|
| 1705 |
|
| 1706 |
LOG_DIS("mulu.%c $r%u, $r%u\n",
|
| 1707 |
memsize_char(size), dc->op1, dc->op2); |
| 1708 |
cris_cc_mask(dc, CC_MASK_NZV); |
| 1709 |
cris_alu_alloc_temps(dc, size, t); |
| 1710 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1711 |
|
| 1712 |
cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4); |
| 1713 |
cris_alu_alloc_temps(dc, size, t); |
| 1714 |
return 2; |
| 1715 |
} |
| 1716 |
|
| 1717 |
|
| 1718 |
static int dec_dstep_r(DisasContext *dc) |
| 1719 |
{
|
| 1720 |
LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2);
|
| 1721 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1722 |
cris_alu(dc, CC_OP_DSTEP, |
| 1723 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
|
| 1724 |
return 2; |
| 1725 |
} |
| 1726 |
|
| 1727 |
static int dec_xor_r(DisasContext *dc) |
| 1728 |
{
|
| 1729 |
TCGv t[2];
|
| 1730 |
int size = memsize_zz(dc);
|
| 1731 |
LOG_DIS("xor.%c $r%u, $r%u\n",
|
| 1732 |
memsize_char(size), dc->op1, dc->op2); |
| 1733 |
BUG_ON(size != 4); /* xor is dword. */ |
| 1734 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1735 |
cris_alu_alloc_temps(dc, size, t); |
| 1736 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1737 |
|
| 1738 |
cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4); |
| 1739 |
cris_alu_free_temps(dc, size, t); |
| 1740 |
return 2; |
| 1741 |
} |
| 1742 |
|
| 1743 |
static int dec_bound_r(DisasContext *dc) |
| 1744 |
{
|
| 1745 |
TCGv l0; |
| 1746 |
int size = memsize_zz(dc);
|
| 1747 |
LOG_DIS("bound.%c $r%u, $r%u\n",
|
| 1748 |
memsize_char(size), dc->op1, dc->op2); |
| 1749 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1750 |
l0 = tcg_temp_local_new(); |
| 1751 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
|
| 1752 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
|
| 1753 |
tcg_temp_free(l0); |
| 1754 |
return 2; |
| 1755 |
} |
| 1756 |
|
| 1757 |
static int dec_cmp_r(DisasContext *dc) |
| 1758 |
{
|
| 1759 |
TCGv t[2];
|
| 1760 |
int size = memsize_zz(dc);
|
| 1761 |
LOG_DIS("cmp.%c $r%u, $r%u\n",
|
| 1762 |
memsize_char(size), dc->op1, dc->op2); |
| 1763 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1764 |
cris_alu_alloc_temps(dc, size, t); |
| 1765 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1766 |
|
| 1767 |
cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size); |
| 1768 |
cris_alu_free_temps(dc, size, t); |
| 1769 |
return 2; |
| 1770 |
} |
| 1771 |
|
| 1772 |
static int dec_abs_r(DisasContext *dc) |
| 1773 |
{
|
| 1774 |
TCGv t0; |
| 1775 |
|
| 1776 |
LOG_DIS("abs $r%u, $r%u\n",
|
| 1777 |
dc->op1, dc->op2); |
| 1778 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1779 |
|
| 1780 |
t0 = tcg_temp_new(); |
| 1781 |
tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
|
| 1782 |
tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0); |
| 1783 |
tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0); |
| 1784 |
tcg_temp_free(t0); |
| 1785 |
|
| 1786 |
cris_alu(dc, CC_OP_MOVE, |
| 1787 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
| 1788 |
return 2; |
| 1789 |
} |
| 1790 |
|
| 1791 |
static int dec_add_r(DisasContext *dc) |
| 1792 |
{
|
| 1793 |
TCGv t[2];
|
| 1794 |
int size = memsize_zz(dc);
|
| 1795 |
LOG_DIS("add.%c $r%u, $r%u\n",
|
| 1796 |
memsize_char(size), dc->op1, dc->op2); |
| 1797 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1798 |
cris_alu_alloc_temps(dc, size, t); |
| 1799 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1800 |
|
| 1801 |
cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size); |
| 1802 |
cris_alu_free_temps(dc, size, t); |
| 1803 |
return 2; |
| 1804 |
} |
| 1805 |
|
| 1806 |
static int dec_addc_r(DisasContext *dc) |
| 1807 |
{
|
| 1808 |
LOG_DIS("addc $r%u, $r%u\n",
|
| 1809 |
dc->op1, dc->op2); |
| 1810 |
cris_evaluate_flags(dc); |
| 1811 |
/* Set for this insn. */
|
| 1812 |
dc->flagx_known = 1;
|
| 1813 |
dc->flags_x = X_FLAG; |
| 1814 |
|
| 1815 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1816 |
cris_alu(dc, CC_OP_ADDC, |
| 1817 |
cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
|
| 1818 |
return 2; |
| 1819 |
} |
| 1820 |
|
| 1821 |
static int dec_mcp_r(DisasContext *dc) |
| 1822 |
{
|
| 1823 |
LOG_DIS("mcp $p%u, $r%u\n",
|
| 1824 |
dc->op2, dc->op1); |
| 1825 |
cris_evaluate_flags(dc); |
| 1826 |
cris_cc_mask(dc, CC_MASK_RNZV); |
| 1827 |
cris_alu(dc, CC_OP_MCP, |
| 1828 |
cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
|
| 1829 |
return 2; |
| 1830 |
} |
| 1831 |
|
| 1832 |
#if DISAS_CRIS
|
| 1833 |
static char * swapmode_name(int mode, char *modename) { |
| 1834 |
int i = 0; |
| 1835 |
if (mode & 8) |
| 1836 |
modename[i++] = 'n';
|
| 1837 |
if (mode & 4) |
| 1838 |
modename[i++] = 'w';
|
| 1839 |
if (mode & 2) |
| 1840 |
modename[i++] = 'b';
|
| 1841 |
if (mode & 1) |
| 1842 |
modename[i++] = 'r';
|
| 1843 |
modename[i++] = 0;
|
| 1844 |
return modename;
|
| 1845 |
} |
| 1846 |
#endif
|
| 1847 |
|
| 1848 |
static int dec_swap_r(DisasContext *dc) |
| 1849 |
{
|
| 1850 |
TCGv t0; |
| 1851 |
#if DISAS_CRIS
|
| 1852 |
char modename[4]; |
| 1853 |
#endif
|
| 1854 |
LOG_DIS("swap%s $r%u\n",
|
| 1855 |
swapmode_name(dc->op2, modename), dc->op1); |
| 1856 |
|
| 1857 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1858 |
t0 = tcg_temp_new(); |
| 1859 |
t_gen_mov_TN_reg(t0, dc->op1); |
| 1860 |
if (dc->op2 & 8) |
| 1861 |
tcg_gen_not_tl(t0, t0); |
| 1862 |
if (dc->op2 & 4) |
| 1863 |
t_gen_swapw(t0, t0); |
| 1864 |
if (dc->op2 & 2) |
| 1865 |
t_gen_swapb(t0, t0); |
| 1866 |
if (dc->op2 & 1) |
| 1867 |
t_gen_swapr(t0, t0); |
| 1868 |
cris_alu(dc, CC_OP_MOVE, |
| 1869 |
cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
|
| 1870 |
tcg_temp_free(t0); |
| 1871 |
return 2; |
| 1872 |
} |
| 1873 |
|
| 1874 |
static int dec_or_r(DisasContext *dc) |
| 1875 |
{
|
| 1876 |
TCGv t[2];
|
| 1877 |
int size = memsize_zz(dc);
|
| 1878 |
LOG_DIS("or.%c $r%u, $r%u\n",
|
| 1879 |
memsize_char(size), dc->op1, dc->op2); |
| 1880 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1881 |
cris_alu_alloc_temps(dc, size, t); |
| 1882 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1883 |
cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size); |
| 1884 |
cris_alu_free_temps(dc, size, t); |
| 1885 |
return 2; |
| 1886 |
} |
| 1887 |
|
| 1888 |
static int dec_addi_r(DisasContext *dc) |
| 1889 |
{
|
| 1890 |
TCGv t0; |
| 1891 |
LOG_DIS("addi.%c $r%u, $r%u\n",
|
| 1892 |
memsize_char(memsize_zz(dc)), dc->op2, dc->op1); |
| 1893 |
cris_cc_mask(dc, 0);
|
| 1894 |
t0 = tcg_temp_new(); |
| 1895 |
tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); |
| 1896 |
tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0); |
| 1897 |
tcg_temp_free(t0); |
| 1898 |
return 2; |
| 1899 |
} |
| 1900 |
|
| 1901 |
static int dec_addi_acr(DisasContext *dc) |
| 1902 |
{
|
| 1903 |
TCGv t0; |
| 1904 |
LOG_DIS("addi.%c $r%u, $r%u, $acr\n",
|
| 1905 |
memsize_char(memsize_zz(dc)), dc->op2, dc->op1); |
| 1906 |
cris_cc_mask(dc, 0);
|
| 1907 |
t0 = tcg_temp_new(); |
| 1908 |
tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); |
| 1909 |
tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0); |
| 1910 |
tcg_temp_free(t0); |
| 1911 |
return 2; |
| 1912 |
} |
| 1913 |
|
| 1914 |
static int dec_neg_r(DisasContext *dc) |
| 1915 |
{
|
| 1916 |
TCGv t[2];
|
| 1917 |
int size = memsize_zz(dc);
|
| 1918 |
LOG_DIS("neg.%c $r%u, $r%u\n",
|
| 1919 |
memsize_char(size), dc->op1, dc->op2); |
| 1920 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1921 |
cris_alu_alloc_temps(dc, size, t); |
| 1922 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1923 |
|
| 1924 |
cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size); |
| 1925 |
cris_alu_free_temps(dc, size, t); |
| 1926 |
return 2; |
| 1927 |
} |
| 1928 |
|
| 1929 |
static int dec_btst_r(DisasContext *dc) |
| 1930 |
{
|
| 1931 |
LOG_DIS("btst $r%u, $r%u\n",
|
| 1932 |
dc->op1, dc->op2); |
| 1933 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1934 |
cris_evaluate_flags(dc); |
| 1935 |
gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->op2], |
| 1936 |
cpu_R[dc->op1], cpu_PR[PR_CCS]); |
| 1937 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], |
| 1938 |
cpu_R[dc->op2], cpu_R[dc->op2], 4);
|
| 1939 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
| 1940 |
dc->flags_uptodate = 1;
|
| 1941 |
return 2; |
| 1942 |
} |
| 1943 |
|
| 1944 |
static int dec_sub_r(DisasContext *dc) |
| 1945 |
{
|
| 1946 |
TCGv t[2];
|
| 1947 |
int size = memsize_zz(dc);
|
| 1948 |
LOG_DIS("sub.%c $r%u, $r%u\n",
|
| 1949 |
memsize_char(size), dc->op1, dc->op2); |
| 1950 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1951 |
cris_alu_alloc_temps(dc, size, t); |
| 1952 |
dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); |
| 1953 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size); |
| 1954 |
cris_alu_free_temps(dc, size, t); |
| 1955 |
return 2; |
| 1956 |
} |
| 1957 |
|
| 1958 |
/* Zero extension. From size to dword. */
|
| 1959 |
static int dec_movu_r(DisasContext *dc) |
| 1960 |
{
|
| 1961 |
TCGv t0; |
| 1962 |
int size = memsize_z(dc);
|
| 1963 |
LOG_DIS("movu.%c $r%u, $r%u\n",
|
| 1964 |
memsize_char(size), |
| 1965 |
dc->op1, dc->op2); |
| 1966 |
|
| 1967 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 1968 |
t0 = tcg_temp_new(); |
| 1969 |
dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
|
| 1970 |
cris_alu(dc, CC_OP_MOVE, 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 int dec_movs_r(DisasContext *dc) |
| 1977 |
{
|
| 1978 |
TCGv t0; |
| 1979 |
int size = memsize_z(dc);
|
| 1980 |
LOG_DIS("movs.%c $r%u, $r%u\n",
|
| 1981 |
memsize_char(size), |
| 1982 |
dc->op1, dc->op2); |
| 1983 |
|
| 1984 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 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_MOVE, |
| 1989 |
cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
|
| 1990 |
tcg_temp_free(t0); |
| 1991 |
return 2; |
| 1992 |
} |
| 1993 |
|
| 1994 |
/* zero extension. From size to dword. */
|
| 1995 |
static int dec_addu_r(DisasContext *dc) |
| 1996 |
{
|
| 1997 |
TCGv t0; |
| 1998 |
int size = memsize_z(dc);
|
| 1999 |
LOG_DIS("addu.%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_ADD, |
| 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 int dec_adds_r(DisasContext *dc) |
| 2015 |
{
|
| 2016 |
TCGv t0; |
| 2017 |
int size = memsize_z(dc);
|
| 2018 |
LOG_DIS("adds.%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_ADD, |
| 2027 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
| 2028 |
tcg_temp_free(t0); |
| 2029 |
return 2; |
| 2030 |
} |
| 2031 |
|
| 2032 |
/* Zero extension. From size to dword. */
|
| 2033 |
static int dec_subu_r(DisasContext *dc) |
| 2034 |
{
|
| 2035 |
TCGv t0; |
| 2036 |
int size = memsize_z(dc);
|
| 2037 |
LOG_DIS("subu.%c $r%u, $r%u\n",
|
| 2038 |
memsize_char(size), |
| 2039 |
dc->op1, dc->op2); |
| 2040 |
|
| 2041 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2042 |
t0 = tcg_temp_new(); |
| 2043 |
/* Size can only be qi or hi. */
|
| 2044 |
t_gen_zext(t0, cpu_R[dc->op1], size); |
| 2045 |
cris_alu(dc, CC_OP_SUB, |
| 2046 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
| 2047 |
tcg_temp_free(t0); |
| 2048 |
return 2; |
| 2049 |
} |
| 2050 |
|
| 2051 |
/* Sign extension. From size to dword. */
|
| 2052 |
static int dec_subs_r(DisasContext *dc) |
| 2053 |
{
|
| 2054 |
TCGv t0; |
| 2055 |
int size = memsize_z(dc);
|
| 2056 |
LOG_DIS("subs.%c $r%u, $r%u\n",
|
| 2057 |
memsize_char(size), |
| 2058 |
dc->op1, dc->op2); |
| 2059 |
|
| 2060 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2061 |
t0 = tcg_temp_new(); |
| 2062 |
/* Size can only be qi or hi. */
|
| 2063 |
t_gen_sext(t0, cpu_R[dc->op1], size); |
| 2064 |
cris_alu(dc, CC_OP_SUB, |
| 2065 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
|
| 2066 |
tcg_temp_free(t0); |
| 2067 |
return 2; |
| 2068 |
} |
| 2069 |
|
| 2070 |
static int dec_setclrf(DisasContext *dc) |
| 2071 |
{
|
| 2072 |
uint32_t flags; |
| 2073 |
int set = (~dc->opcode >> 2) & 1; |
| 2074 |
|
| 2075 |
|
| 2076 |
flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4) |
| 2077 |
| EXTRACT_FIELD(dc->ir, 0, 3); |
| 2078 |
if (set && flags == 0) { |
| 2079 |
LOG_DIS("nop\n");
|
| 2080 |
return 2; |
| 2081 |
} else if (!set && (flags & 0x20)) { |
| 2082 |
LOG_DIS("di\n");
|
| 2083 |
} |
| 2084 |
else {
|
| 2085 |
LOG_DIS("%sf %x\n",
|
| 2086 |
set ? "set" : "clr", |
| 2087 |
flags); |
| 2088 |
} |
| 2089 |
|
| 2090 |
/* User space is not allowed to touch these. Silently ignore. */
|
| 2091 |
if (dc->tb_flags & U_FLAG) {
|
| 2092 |
flags &= ~(S_FLAG | I_FLAG | U_FLAG); |
| 2093 |
} |
| 2094 |
|
| 2095 |
if (flags & X_FLAG) {
|
| 2096 |
dc->flagx_known = 1;
|
| 2097 |
if (set)
|
| 2098 |
dc->flags_x = X_FLAG; |
| 2099 |
else
|
| 2100 |
dc->flags_x = 0;
|
| 2101 |
} |
| 2102 |
|
| 2103 |
/* Break the TB if any of the SPI flag changes. */
|
| 2104 |
if (flags & (P_FLAG | S_FLAG)) {
|
| 2105 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
| 2106 |
dc->is_jmp = DISAS_UPDATE; |
| 2107 |
dc->cpustate_changed = 1;
|
| 2108 |
} |
| 2109 |
|
| 2110 |
/* For the I flag, only act on posedge. */
|
| 2111 |
if ((flags & I_FLAG)) {
|
| 2112 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
| 2113 |
dc->is_jmp = DISAS_UPDATE; |
| 2114 |
dc->cpustate_changed = 1;
|
| 2115 |
} |
| 2116 |
|
| 2117 |
|
| 2118 |
/* Simply decode the flags. */
|
| 2119 |
cris_evaluate_flags (dc); |
| 2120 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
| 2121 |
cris_update_cc_x(dc); |
| 2122 |
tcg_gen_movi_tl(cc_op, dc->cc_op); |
| 2123 |
|
| 2124 |
if (set) {
|
| 2125 |
if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
|
| 2126 |
/* Enter user mode. */
|
| 2127 |
t_gen_mov_env_TN(ksp, cpu_R[R_SP]); |
| 2128 |
tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]); |
| 2129 |
dc->cpustate_changed = 1;
|
| 2130 |
} |
| 2131 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); |
| 2132 |
} |
| 2133 |
else
|
| 2134 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags); |
| 2135 |
|
| 2136 |
dc->flags_uptodate = 1;
|
| 2137 |
dc->clear_x = 0;
|
| 2138 |
return 2; |
| 2139 |
} |
| 2140 |
|
| 2141 |
static int dec_move_rs(DisasContext *dc) |
| 2142 |
{
|
| 2143 |
LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2);
|
| 2144 |
cris_cc_mask(dc, 0);
|
| 2145 |
gen_helper_movl_sreg_reg(tcg_const_tl(dc->op2), tcg_const_tl(dc->op1)); |
| 2146 |
return 2; |
| 2147 |
} |
| 2148 |
static int dec_move_sr(DisasContext *dc) |
| 2149 |
{
|
| 2150 |
LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1);
|
| 2151 |
cris_cc_mask(dc, 0);
|
| 2152 |
gen_helper_movl_reg_sreg(tcg_const_tl(dc->op1), tcg_const_tl(dc->op2)); |
| 2153 |
return 2; |
| 2154 |
} |
| 2155 |
|
| 2156 |
static int dec_move_rp(DisasContext *dc) |
| 2157 |
{
|
| 2158 |
TCGv t[2];
|
| 2159 |
LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2);
|
| 2160 |
cris_cc_mask(dc, 0);
|
| 2161 |
|
| 2162 |
t[0] = tcg_temp_new();
|
| 2163 |
if (dc->op2 == PR_CCS) {
|
| 2164 |
cris_evaluate_flags(dc); |
| 2165 |
t_gen_mov_TN_reg(t[0], dc->op1);
|
| 2166 |
if (dc->tb_flags & U_FLAG) {
|
| 2167 |
t[1] = tcg_temp_new();
|
| 2168 |
/* User space is not allowed to touch all flags. */
|
| 2169 |
tcg_gen_andi_tl(t[0], t[0], 0x39f); |
| 2170 |
tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f); |
| 2171 |
tcg_gen_or_tl(t[0], t[1], t[0]); |
| 2172 |
tcg_temp_free(t[1]);
|
| 2173 |
} |
| 2174 |
} |
| 2175 |
else
|
| 2176 |
t_gen_mov_TN_reg(t[0], dc->op1);
|
| 2177 |
|
| 2178 |
t_gen_mov_preg_TN(dc, dc->op2, t[0]);
|
| 2179 |
if (dc->op2 == PR_CCS) {
|
| 2180 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
| 2181 |
dc->flags_uptodate = 1;
|
| 2182 |
} |
| 2183 |
tcg_temp_free(t[0]);
|
| 2184 |
return 2; |
| 2185 |
} |
| 2186 |
static int dec_move_pr(DisasContext *dc) |
| 2187 |
{
|
| 2188 |
TCGv t0; |
| 2189 |
LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1);
|
| 2190 |
cris_cc_mask(dc, 0);
|
| 2191 |
|
| 2192 |
if (dc->op2 == PR_CCS)
|
| 2193 |
cris_evaluate_flags(dc); |
| 2194 |
|
| 2195 |
if (dc->op2 == PR_DZ) {
|
| 2196 |
tcg_gen_movi_tl(cpu_R[dc->op1], 0);
|
| 2197 |
} else {
|
| 2198 |
t0 = tcg_temp_new(); |
| 2199 |
t_gen_mov_TN_preg(t0, dc->op2); |
| 2200 |
cris_alu(dc, CC_OP_MOVE, |
| 2201 |
cpu_R[dc->op1], cpu_R[dc->op1], t0, |
| 2202 |
preg_sizes[dc->op2]); |
| 2203 |
tcg_temp_free(t0); |
| 2204 |
} |
| 2205 |
return 2; |
| 2206 |
} |
| 2207 |
|
| 2208 |
static int dec_move_mr(DisasContext *dc) |
| 2209 |
{
|
| 2210 |
int memsize = memsize_zz(dc);
|
| 2211 |
int insn_len;
|
| 2212 |
LOG_DIS("move.%c [$r%u%s, $r%u\n",
|
| 2213 |
memsize_char(memsize), |
| 2214 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2215 |
dc->op2); |
| 2216 |
|
| 2217 |
if (memsize == 4) { |
| 2218 |
insn_len = dec_prep_move_m(dc, 0, 4, cpu_R[dc->op2]); |
| 2219 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2220 |
cris_update_cc_op(dc, CC_OP_MOVE, 4);
|
| 2221 |
cris_update_cc_x(dc); |
| 2222 |
cris_update_result(dc, cpu_R[dc->op2]); |
| 2223 |
} |
| 2224 |
else {
|
| 2225 |
TCGv t0; |
| 2226 |
|
| 2227 |
t0 = tcg_temp_new(); |
| 2228 |
insn_len = dec_prep_move_m(dc, 0, memsize, t0);
|
| 2229 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2230 |
cris_alu(dc, CC_OP_MOVE, |
| 2231 |
cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize); |
| 2232 |
tcg_temp_free(t0); |
| 2233 |
} |
| 2234 |
do_postinc(dc, memsize); |
| 2235 |
return insn_len;
|
| 2236 |
} |
| 2237 |
|
| 2238 |
static inline void cris_alu_m_alloc_temps(TCGv *t) |
| 2239 |
{
|
| 2240 |
t[0] = tcg_temp_new();
|
| 2241 |
t[1] = tcg_temp_new();
|
| 2242 |
} |
| 2243 |
|
| 2244 |
static inline void cris_alu_m_free_temps(TCGv *t) |
| 2245 |
{
|
| 2246 |
tcg_temp_free(t[0]);
|
| 2247 |
tcg_temp_free(t[1]);
|
| 2248 |
} |
| 2249 |
|
| 2250 |
static int dec_movs_m(DisasContext *dc) |
| 2251 |
{
|
| 2252 |
TCGv t[2];
|
| 2253 |
int memsize = memsize_z(dc);
|
| 2254 |
int insn_len;
|
| 2255 |
LOG_DIS("movs.%c [$r%u%s, $r%u\n",
|
| 2256 |
memsize_char(memsize), |
| 2257 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2258 |
dc->op2); |
| 2259 |
|
| 2260 |
cris_alu_m_alloc_temps(t); |
| 2261 |
/* sign extend. */
|
| 2262 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
| 2263 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2264 |
cris_alu(dc, CC_OP_MOVE, |
| 2265 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
| 2266 |
do_postinc(dc, memsize); |
| 2267 |
cris_alu_m_free_temps(t); |
| 2268 |
return insn_len;
|
| 2269 |
} |
| 2270 |
|
| 2271 |
static int dec_addu_m(DisasContext *dc) |
| 2272 |
{
|
| 2273 |
TCGv t[2];
|
| 2274 |
int memsize = memsize_z(dc);
|
| 2275 |
int insn_len;
|
| 2276 |
LOG_DIS("addu.%c [$r%u%s, $r%u\n",
|
| 2277 |
memsize_char(memsize), |
| 2278 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2279 |
dc->op2); |
| 2280 |
|
| 2281 |
cris_alu_m_alloc_temps(t); |
| 2282 |
/* sign extend. */
|
| 2283 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2284 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2285 |
cris_alu(dc, CC_OP_ADD, |
| 2286 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
| 2287 |
do_postinc(dc, memsize); |
| 2288 |
cris_alu_m_free_temps(t); |
| 2289 |
return insn_len;
|
| 2290 |
} |
| 2291 |
|
| 2292 |
static int dec_adds_m(DisasContext *dc) |
| 2293 |
{
|
| 2294 |
TCGv t[2];
|
| 2295 |
int memsize = memsize_z(dc);
|
| 2296 |
int insn_len;
|
| 2297 |
LOG_DIS("adds.%c [$r%u%s, $r%u\n",
|
| 2298 |
memsize_char(memsize), |
| 2299 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2300 |
dc->op2); |
| 2301 |
|
| 2302 |
cris_alu_m_alloc_temps(t); |
| 2303 |
/* sign extend. */
|
| 2304 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
| 2305 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2306 |
cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
| 2307 |
do_postinc(dc, memsize); |
| 2308 |
cris_alu_m_free_temps(t); |
| 2309 |
return insn_len;
|
| 2310 |
} |
| 2311 |
|
| 2312 |
static int dec_subu_m(DisasContext *dc) |
| 2313 |
{
|
| 2314 |
TCGv t[2];
|
| 2315 |
int memsize = memsize_z(dc);
|
| 2316 |
int insn_len;
|
| 2317 |
LOG_DIS("subu.%c [$r%u%s, $r%u\n",
|
| 2318 |
memsize_char(memsize), |
| 2319 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2320 |
dc->op2); |
| 2321 |
|
| 2322 |
cris_alu_m_alloc_temps(t); |
| 2323 |
/* sign extend. */
|
| 2324 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2325 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2326 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
| 2327 |
do_postinc(dc, memsize); |
| 2328 |
cris_alu_m_free_temps(t); |
| 2329 |
return insn_len;
|
| 2330 |
} |
| 2331 |
|
| 2332 |
static int dec_subs_m(DisasContext *dc) |
| 2333 |
{
|
| 2334 |
TCGv t[2];
|
| 2335 |
int memsize = memsize_z(dc);
|
| 2336 |
int insn_len;
|
| 2337 |
LOG_DIS("subs.%c [$r%u%s, $r%u\n",
|
| 2338 |
memsize_char(memsize), |
| 2339 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2340 |
dc->op2); |
| 2341 |
|
| 2342 |
cris_alu_m_alloc_temps(t); |
| 2343 |
/* sign extend. */
|
| 2344 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
| 2345 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2346 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
| 2347 |
do_postinc(dc, memsize); |
| 2348 |
cris_alu_m_free_temps(t); |
| 2349 |
return insn_len;
|
| 2350 |
} |
| 2351 |
|
| 2352 |
static int dec_movu_m(DisasContext *dc) |
| 2353 |
{
|
| 2354 |
TCGv t[2];
|
| 2355 |
int memsize = memsize_z(dc);
|
| 2356 |
int insn_len;
|
| 2357 |
|
| 2358 |
LOG_DIS("movu.%c [$r%u%s, $r%u\n",
|
| 2359 |
memsize_char(memsize), |
| 2360 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2361 |
dc->op2); |
| 2362 |
|
| 2363 |
cris_alu_m_alloc_temps(t); |
| 2364 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2365 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2366 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
| 2367 |
do_postinc(dc, memsize); |
| 2368 |
cris_alu_m_free_temps(t); |
| 2369 |
return insn_len;
|
| 2370 |
} |
| 2371 |
|
| 2372 |
static int dec_cmpu_m(DisasContext *dc) |
| 2373 |
{
|
| 2374 |
TCGv t[2];
|
| 2375 |
int memsize = memsize_z(dc);
|
| 2376 |
int insn_len;
|
| 2377 |
LOG_DIS("cmpu.%c [$r%u%s, $r%u\n",
|
| 2378 |
memsize_char(memsize), |
| 2379 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2380 |
dc->op2); |
| 2381 |
|
| 2382 |
cris_alu_m_alloc_temps(t); |
| 2383 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2384 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2385 |
cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); |
| 2386 |
do_postinc(dc, memsize); |
| 2387 |
cris_alu_m_free_temps(t); |
| 2388 |
return insn_len;
|
| 2389 |
} |
| 2390 |
|
| 2391 |
static int dec_cmps_m(DisasContext *dc) |
| 2392 |
{
|
| 2393 |
TCGv t[2];
|
| 2394 |
int memsize = memsize_z(dc);
|
| 2395 |
int insn_len;
|
| 2396 |
LOG_DIS("cmps.%c [$r%u%s, $r%u\n",
|
| 2397 |
memsize_char(memsize), |
| 2398 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2399 |
dc->op2); |
| 2400 |
|
| 2401 |
cris_alu_m_alloc_temps(t); |
| 2402 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
| 2403 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2404 |
cris_alu(dc, CC_OP_CMP, |
| 2405 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1],
|
| 2406 |
memsize_zz(dc)); |
| 2407 |
do_postinc(dc, memsize); |
| 2408 |
cris_alu_m_free_temps(t); |
| 2409 |
return insn_len;
|
| 2410 |
} |
| 2411 |
|
| 2412 |
static int dec_cmp_m(DisasContext *dc) |
| 2413 |
{
|
| 2414 |
TCGv t[2];
|
| 2415 |
int memsize = memsize_zz(dc);
|
| 2416 |
int insn_len;
|
| 2417 |
LOG_DIS("cmp.%c [$r%u%s, $r%u\n",
|
| 2418 |
memsize_char(memsize), |
| 2419 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2420 |
dc->op2); |
| 2421 |
|
| 2422 |
cris_alu_m_alloc_temps(t); |
| 2423 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2424 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2425 |
cris_alu(dc, CC_OP_CMP, |
| 2426 |
cpu_R[dc->op2], cpu_R[dc->op2], t[1],
|
| 2427 |
memsize_zz(dc)); |
| 2428 |
do_postinc(dc, memsize); |
| 2429 |
cris_alu_m_free_temps(t); |
| 2430 |
return insn_len;
|
| 2431 |
} |
| 2432 |
|
| 2433 |
static int dec_test_m(DisasContext *dc) |
| 2434 |
{
|
| 2435 |
TCGv t[2];
|
| 2436 |
int memsize = memsize_zz(dc);
|
| 2437 |
int insn_len;
|
| 2438 |
LOG_DIS("test.%c [$r%u%s] op2=%x\n",
|
| 2439 |
memsize_char(memsize), |
| 2440 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2441 |
dc->op2); |
| 2442 |
|
| 2443 |
cris_evaluate_flags(dc); |
| 2444 |
|
| 2445 |
cris_alu_m_alloc_temps(t); |
| 2446 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2447 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2448 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
|
| 2449 |
|
| 2450 |
cris_alu(dc, CC_OP_CMP, |
| 2451 |
cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc)); |
| 2452 |
do_postinc(dc, memsize); |
| 2453 |
cris_alu_m_free_temps(t); |
| 2454 |
return insn_len;
|
| 2455 |
} |
| 2456 |
|
| 2457 |
static int dec_and_m(DisasContext *dc) |
| 2458 |
{
|
| 2459 |
TCGv t[2];
|
| 2460 |
int memsize = memsize_zz(dc);
|
| 2461 |
int insn_len;
|
| 2462 |
LOG_DIS("and.%c [$r%u%s, $r%u\n",
|
| 2463 |
memsize_char(memsize), |
| 2464 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2465 |
dc->op2); |
| 2466 |
|
| 2467 |
cris_alu_m_alloc_temps(t); |
| 2468 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2469 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2470 |
cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); |
| 2471 |
do_postinc(dc, memsize); |
| 2472 |
cris_alu_m_free_temps(t); |
| 2473 |
return insn_len;
|
| 2474 |
} |
| 2475 |
|
| 2476 |
static int dec_add_m(DisasContext *dc) |
| 2477 |
{
|
| 2478 |
TCGv t[2];
|
| 2479 |
int memsize = memsize_zz(dc);
|
| 2480 |
int insn_len;
|
| 2481 |
LOG_DIS("add.%c [$r%u%s, $r%u\n",
|
| 2482 |
memsize_char(memsize), |
| 2483 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2484 |
dc->op2); |
| 2485 |
|
| 2486 |
cris_alu_m_alloc_temps(t); |
| 2487 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2488 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2489 |
cris_alu(dc, CC_OP_ADD, |
| 2490 |
cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); |
| 2491 |
do_postinc(dc, memsize); |
| 2492 |
cris_alu_m_free_temps(t); |
| 2493 |
return insn_len;
|
| 2494 |
} |
| 2495 |
|
| 2496 |
static int dec_addo_m(DisasContext *dc) |
| 2497 |
{
|
| 2498 |
TCGv t[2];
|
| 2499 |
int memsize = memsize_zz(dc);
|
| 2500 |
int insn_len;
|
| 2501 |
LOG_DIS("add.%c [$r%u%s, $r%u\n",
|
| 2502 |
memsize_char(memsize), |
| 2503 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2504 |
dc->op2); |
| 2505 |
|
| 2506 |
cris_alu_m_alloc_temps(t); |
| 2507 |
insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]); |
| 2508 |
cris_cc_mask(dc, 0);
|
| 2509 |
cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4); |
| 2510 |
do_postinc(dc, memsize); |
| 2511 |
cris_alu_m_free_temps(t); |
| 2512 |
return insn_len;
|
| 2513 |
} |
| 2514 |
|
| 2515 |
static int dec_bound_m(DisasContext *dc) |
| 2516 |
{
|
| 2517 |
TCGv l[2];
|
| 2518 |
int memsize = memsize_zz(dc);
|
| 2519 |
int insn_len;
|
| 2520 |
LOG_DIS("bound.%c [$r%u%s, $r%u\n",
|
| 2521 |
memsize_char(memsize), |
| 2522 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2523 |
dc->op2); |
| 2524 |
|
| 2525 |
l[0] = tcg_temp_local_new();
|
| 2526 |
l[1] = tcg_temp_local_new();
|
| 2527 |
insn_len = dec_prep_alu_m(dc, 0, memsize, l[0], l[1]); |
| 2528 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2529 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4); |
| 2530 |
do_postinc(dc, memsize); |
| 2531 |
tcg_temp_free(l[0]);
|
| 2532 |
tcg_temp_free(l[1]);
|
| 2533 |
return insn_len;
|
| 2534 |
} |
| 2535 |
|
| 2536 |
static int dec_addc_mr(DisasContext *dc) |
| 2537 |
{
|
| 2538 |
TCGv t[2];
|
| 2539 |
int insn_len = 2; |
| 2540 |
LOG_DIS("addc [$r%u%s, $r%u\n",
|
| 2541 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2542 |
dc->op2); |
| 2543 |
|
| 2544 |
cris_evaluate_flags(dc); |
| 2545 |
|
| 2546 |
/* Set for this insn. */
|
| 2547 |
dc->flagx_known = 1;
|
| 2548 |
dc->flags_x = X_FLAG; |
| 2549 |
|
| 2550 |
cris_alu_m_alloc_temps(t); |
| 2551 |
insn_len = dec_prep_alu_m(dc, 0, 4, t[0], t[1]); |
| 2552 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2553 |
cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4); |
| 2554 |
do_postinc(dc, 4);
|
| 2555 |
cris_alu_m_free_temps(t); |
| 2556 |
return insn_len;
|
| 2557 |
} |
| 2558 |
|
| 2559 |
static int dec_sub_m(DisasContext *dc) |
| 2560 |
{
|
| 2561 |
TCGv t[2];
|
| 2562 |
int memsize = memsize_zz(dc);
|
| 2563 |
int insn_len;
|
| 2564 |
LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
|
| 2565 |
memsize_char(memsize), |
| 2566 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2567 |
dc->op2, dc->ir, dc->zzsize); |
| 2568 |
|
| 2569 |
cris_alu_m_alloc_temps(t); |
| 2570 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2571 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 2572 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize); |
| 2573 |
do_postinc(dc, memsize); |
| 2574 |
cris_alu_m_free_temps(t); |
| 2575 |
return insn_len;
|
| 2576 |
} |
| 2577 |
|
| 2578 |
static int dec_or_m(DisasContext *dc) |
| 2579 |
{
|
| 2580 |
TCGv t[2];
|
| 2581 |
int memsize = memsize_zz(dc);
|
| 2582 |
int insn_len;
|
| 2583 |
LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n",
|
| 2584 |
memsize_char(memsize), |
| 2585 |
dc->op1, dc->postinc ? "+]" : "]", |
| 2586 |
dc->op2, dc->pc); |
| 2587 |
|
| 2588 |
cris_alu_m_alloc_temps(t); |
| 2589 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2590 |
cris_cc_mask(dc, CC_MASK_NZ); |
| 2591 |
cris_alu(dc, CC_OP_OR, |
| 2592 |
cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); |
| 2593 |
do_postinc(dc, memsize); |
| 2594 |
cris_alu_m_free_temps(t); |
| 2595 |
return insn_len;
|
| 2596 |
} |
| 2597 |
|
| 2598 |
static int dec_move_mp(DisasContext *dc) |
| 2599 |
{
|
| 2600 |
TCGv t[2];
|
| 2601 |
int memsize = memsize_zz(dc);
|
| 2602 |
int insn_len = 2; |
| 2603 |
|
| 2604 |
LOG_DIS("move.%c [$r%u%s, $p%u\n",
|
| 2605 |
memsize_char(memsize), |
| 2606 |
dc->op1, |
| 2607 |
dc->postinc ? "+]" : "]", |
| 2608 |
dc->op2); |
| 2609 |
|
| 2610 |
cris_alu_m_alloc_temps(t); |
| 2611 |
insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]); |
| 2612 |
cris_cc_mask(dc, 0);
|
| 2613 |
if (dc->op2 == PR_CCS) {
|
| 2614 |
cris_evaluate_flags(dc); |
| 2615 |
if (dc->tb_flags & U_FLAG) {
|
| 2616 |
/* User space is not allowed to touch all flags. */
|
| 2617 |
tcg_gen_andi_tl(t[1], t[1], 0x39f); |
| 2618 |
tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f); |
| 2619 |
tcg_gen_or_tl(t[1], t[0], t[1]); |
| 2620 |
} |
| 2621 |
} |
| 2622 |
|
| 2623 |
t_gen_mov_preg_TN(dc, dc->op2, t[1]);
|
| 2624 |
|
| 2625 |
do_postinc(dc, memsize); |
| 2626 |
cris_alu_m_free_temps(t); |
| 2627 |
return insn_len;
|
| 2628 |
} |
| 2629 |
|
| 2630 |
static int dec_move_pm(DisasContext *dc) |
| 2631 |
{
|
| 2632 |
TCGv t0; |
| 2633 |
int memsize;
|
| 2634 |
|
| 2635 |
memsize = preg_sizes[dc->op2]; |
| 2636 |
|
| 2637 |
LOG_DIS("move.%c $p%u, [$r%u%s\n",
|
| 2638 |
memsize_char(memsize), |
| 2639 |
dc->op2, dc->op1, dc->postinc ? "+]" : "]"); |
| 2640 |
|
| 2641 |
/* prepare store. Address in T0, value in T1. */
|
| 2642 |
if (dc->op2 == PR_CCS)
|
| 2643 |
cris_evaluate_flags(dc); |
| 2644 |
t0 = tcg_temp_new(); |
| 2645 |
t_gen_mov_TN_preg(t0, dc->op2); |
| 2646 |
cris_flush_cc_state(dc); |
| 2647 |
gen_store(dc, cpu_R[dc->op1], t0, memsize); |
| 2648 |
tcg_temp_free(t0); |
| 2649 |
|
| 2650 |
cris_cc_mask(dc, 0);
|
| 2651 |
if (dc->postinc)
|
| 2652 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); |
| 2653 |
return 2; |
| 2654 |
} |
| 2655 |
|
| 2656 |
static int dec_movem_mr(DisasContext *dc) |
| 2657 |
{
|
| 2658 |
TCGv_i64 tmp[16];
|
| 2659 |
TCGv tmp32; |
| 2660 |
TCGv addr; |
| 2661 |
int i;
|
| 2662 |
int nr = dc->op2 + 1; |
| 2663 |
|
| 2664 |
LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1,
|
| 2665 |
dc->postinc ? "+]" : "]", dc->op2); |
| 2666 |
|
| 2667 |
addr = tcg_temp_new(); |
| 2668 |
/* There are probably better ways of doing this. */
|
| 2669 |
cris_flush_cc_state(dc); |
| 2670 |
for (i = 0; i < (nr >> 1); i++) { |
| 2671 |
tmp[i] = tcg_temp_new_i64(); |
| 2672 |
tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
|
| 2673 |
gen_load64(dc, tmp[i], addr); |
| 2674 |
} |
| 2675 |
if (nr & 1) { |
| 2676 |
tmp32 = tcg_temp_new_i32(); |
| 2677 |
tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
|
| 2678 |
gen_load(dc, tmp32, addr, 4, 0); |
| 2679 |
} else
|
| 2680 |
TCGV_UNUSED(tmp32); |
| 2681 |
tcg_temp_free(addr); |
| 2682 |
|
| 2683 |
for (i = 0; i < (nr >> 1); i++) { |
| 2684 |
tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
|
| 2685 |
tcg_gen_shri_i64(tmp[i], tmp[i], 32);
|
| 2686 |
tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]); |
| 2687 |
tcg_temp_free_i64(tmp[i]); |
| 2688 |
} |
| 2689 |
if (nr & 1) { |
| 2690 |
tcg_gen_mov_tl(cpu_R[dc->op2], tmp32); |
| 2691 |
tcg_temp_free(tmp32); |
| 2692 |
} |
| 2693 |
|
| 2694 |
/* writeback the updated pointer value. */
|
| 2695 |
if (dc->postinc)
|
| 2696 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
|
| 2697 |
|
| 2698 |
/* gen_load might want to evaluate the previous insns flags. */
|
| 2699 |
cris_cc_mask(dc, 0);
|
| 2700 |
return 2; |
| 2701 |
} |
| 2702 |
|
| 2703 |
static int dec_movem_rm(DisasContext *dc) |
| 2704 |
{
|
| 2705 |
TCGv tmp; |
| 2706 |
TCGv addr; |
| 2707 |
int i;
|
| 2708 |
|
| 2709 |
LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
|
| 2710 |
dc->postinc ? "+]" : "]"); |
| 2711 |
|
| 2712 |
cris_flush_cc_state(dc); |
| 2713 |
|
| 2714 |
tmp = tcg_temp_new(); |
| 2715 |
addr = tcg_temp_new(); |
| 2716 |
tcg_gen_movi_tl(tmp, 4);
|
| 2717 |
tcg_gen_mov_tl(addr, cpu_R[dc->op1]); |
| 2718 |
for (i = 0; i <= dc->op2; i++) { |
| 2719 |
/* Displace addr. */
|
| 2720 |
/* Perform the store. */
|
| 2721 |
gen_store(dc, addr, cpu_R[i], 4);
|
| 2722 |
tcg_gen_add_tl(addr, addr, tmp); |
| 2723 |
} |
| 2724 |
if (dc->postinc)
|
| 2725 |
tcg_gen_mov_tl(cpu_R[dc->op1], addr); |
| 2726 |
cris_cc_mask(dc, 0);
|
| 2727 |
tcg_temp_free(tmp); |
| 2728 |
tcg_temp_free(addr); |
| 2729 |
return 2; |
| 2730 |
} |
| 2731 |
|
| 2732 |
static int dec_move_rm(DisasContext *dc) |
| 2733 |
{
|
| 2734 |
int memsize;
|
| 2735 |
|
| 2736 |
memsize = memsize_zz(dc); |
| 2737 |
|
| 2738 |
LOG_DIS("move.%c $r%u, [$r%u]\n",
|
| 2739 |
memsize_char(memsize), dc->op2, dc->op1); |
| 2740 |
|
| 2741 |
/* prepare store. */
|
| 2742 |
cris_flush_cc_state(dc); |
| 2743 |
gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize); |
| 2744 |
|
| 2745 |
if (dc->postinc)
|
| 2746 |
tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); |
| 2747 |
cris_cc_mask(dc, 0);
|
| 2748 |
return 2; |
| 2749 |
} |
| 2750 |
|
| 2751 |
static int dec_lapcq(DisasContext *dc) |
| 2752 |
{
|
| 2753 |
LOG_DIS("lapcq %x, $r%u\n",
|
| 2754 |
dc->pc + dc->op1*2, dc->op2);
|
| 2755 |
cris_cc_mask(dc, 0);
|
| 2756 |
tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
|
| 2757 |
return 2; |
| 2758 |
} |
| 2759 |
|
| 2760 |
static int dec_lapc_im(DisasContext *dc) |
| 2761 |
{
|
| 2762 |
unsigned int rd; |
| 2763 |
int32_t imm; |
| 2764 |
int32_t pc; |
| 2765 |
|
| 2766 |
rd = dc->op2; |
| 2767 |
|
| 2768 |
cris_cc_mask(dc, 0);
|
| 2769 |
imm = cris_fetch(dc, dc->pc + 2, 4, 0); |
| 2770 |
LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2);
|
| 2771 |
|
| 2772 |
pc = dc->pc; |
| 2773 |
pc += imm; |
| 2774 |
tcg_gen_movi_tl(cpu_R[rd], pc); |
| 2775 |
return 6; |
| 2776 |
} |
| 2777 |
|
| 2778 |
/* Jump to special reg. */
|
| 2779 |
static int dec_jump_p(DisasContext *dc) |
| 2780 |
{
|
| 2781 |
LOG_DIS("jump $p%u\n", dc->op2);
|
| 2782 |
|
| 2783 |
if (dc->op2 == PR_CCS)
|
| 2784 |
cris_evaluate_flags(dc); |
| 2785 |
t_gen_mov_TN_preg(env_btarget, dc->op2); |
| 2786 |
/* rete will often have low bit set to indicate delayslot. */
|
| 2787 |
tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
|
| 2788 |
cris_cc_mask(dc, 0);
|
| 2789 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 2790 |
return 2; |
| 2791 |
} |
| 2792 |
|
| 2793 |
/* Jump and save. */
|
| 2794 |
static int dec_jas_r(DisasContext *dc) |
| 2795 |
{
|
| 2796 |
LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2);
|
| 2797 |
cris_cc_mask(dc, 0);
|
| 2798 |
/* Store the return address in Pd. */
|
| 2799 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); |
| 2800 |
if (dc->op2 > 15) |
| 2801 |
abort(); |
| 2802 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
|
| 2803 |
|
| 2804 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 2805 |
return 2; |
| 2806 |
} |
| 2807 |
|
| 2808 |
static int dec_jas_im(DisasContext *dc) |
| 2809 |
{
|
| 2810 |
uint32_t imm; |
| 2811 |
|
| 2812 |
imm = cris_fetch(dc, dc->pc + 2, 4, 0); |
| 2813 |
|
| 2814 |
LOG_DIS("jas 0x%x\n", imm);
|
| 2815 |
cris_cc_mask(dc, 0);
|
| 2816 |
/* Store the return address in Pd. */
|
| 2817 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
|
| 2818 |
|
| 2819 |
dc->jmp_pc = imm; |
| 2820 |
cris_prepare_jmp(dc, JMP_DIRECT); |
| 2821 |
return 6; |
| 2822 |
} |
| 2823 |
|
| 2824 |
static int dec_jasc_im(DisasContext *dc) |
| 2825 |
{
|
| 2826 |
uint32_t imm; |
| 2827 |
|
| 2828 |
imm = cris_fetch(dc, dc->pc + 2, 4, 0); |
| 2829 |
|
| 2830 |
LOG_DIS("jasc 0x%x\n", imm);
|
| 2831 |
cris_cc_mask(dc, 0);
|
| 2832 |
/* Store the return address in Pd. */
|
| 2833 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4)); |
| 2834 |
|
| 2835 |
dc->jmp_pc = imm; |
| 2836 |
cris_prepare_jmp(dc, JMP_DIRECT); |
| 2837 |
return 6; |
| 2838 |
} |
| 2839 |
|
| 2840 |
static int dec_jasc_r(DisasContext *dc) |
| 2841 |
{
|
| 2842 |
LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2);
|
| 2843 |
cris_cc_mask(dc, 0);
|
| 2844 |
/* Store the return address in Pd. */
|
| 2845 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); |
| 2846 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4)); |
| 2847 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 2848 |
return 2; |
| 2849 |
} |
| 2850 |
|
| 2851 |
static int dec_bcc_im(DisasContext *dc) |
| 2852 |
{
|
| 2853 |
int32_t offset; |
| 2854 |
uint32_t cond = dc->op2; |
| 2855 |
|
| 2856 |
offset = cris_fetch(dc, dc->pc + 2, 2, 1); |
| 2857 |
|
| 2858 |
LOG_DIS("b%s %d pc=%x dst=%x\n",
|
| 2859 |
cc_name(cond), offset, |
| 2860 |
dc->pc, dc->pc + offset); |
| 2861 |
|
| 2862 |
cris_cc_mask(dc, 0);
|
| 2863 |
/* op2 holds the condition-code. */
|
| 2864 |
cris_prepare_cc_branch (dc, offset, cond); |
| 2865 |
return 4; |
| 2866 |
} |
| 2867 |
|
| 2868 |
static int dec_bas_im(DisasContext *dc) |
| 2869 |
{
|
| 2870 |
int32_t simm; |
| 2871 |
|
| 2872 |
|
| 2873 |
simm = cris_fetch(dc, dc->pc + 2, 4, 0); |
| 2874 |
|
| 2875 |
LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2);
|
| 2876 |
cris_cc_mask(dc, 0);
|
| 2877 |
/* Store the return address in Pd. */
|
| 2878 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
|
| 2879 |
|
| 2880 |
dc->jmp_pc = dc->pc + simm; |
| 2881 |
cris_prepare_jmp(dc, JMP_DIRECT); |
| 2882 |
return 6; |
| 2883 |
} |
| 2884 |
|
| 2885 |
static int dec_basc_im(DisasContext *dc) |
| 2886 |
{
|
| 2887 |
int32_t simm; |
| 2888 |
simm = cris_fetch(dc, dc->pc + 2, 4, 0); |
| 2889 |
|
| 2890 |
LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2);
|
| 2891 |
cris_cc_mask(dc, 0);
|
| 2892 |
/* Store the return address in Pd. */
|
| 2893 |
t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
|
| 2894 |
|
| 2895 |
dc->jmp_pc = dc->pc + simm; |
| 2896 |
cris_prepare_jmp(dc, JMP_DIRECT); |
| 2897 |
return 6; |
| 2898 |
} |
| 2899 |
|
| 2900 |
static int dec_rfe_etc(DisasContext *dc) |
| 2901 |
{
|
| 2902 |
cris_cc_mask(dc, 0);
|
| 2903 |
|
| 2904 |
if (dc->op2 == 15) { |
| 2905 |
t_gen_mov_env_TN(halted, tcg_const_tl(1));
|
| 2906 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
| 2907 |
t_gen_raise_exception(EXCP_HLT); |
| 2908 |
return 2; |
| 2909 |
} |
| 2910 |
|
| 2911 |
switch (dc->op2 & 7) { |
| 2912 |
case 2: |
| 2913 |
/* rfe. */
|
| 2914 |
LOG_DIS("rfe\n");
|
| 2915 |
cris_evaluate_flags(dc); |
| 2916 |
gen_helper_rfe(); |
| 2917 |
dc->is_jmp = DISAS_UPDATE; |
| 2918 |
break;
|
| 2919 |
case 5: |
| 2920 |
/* rfn. */
|
| 2921 |
LOG_DIS("rfn\n");
|
| 2922 |
cris_evaluate_flags(dc); |
| 2923 |
gen_helper_rfn(); |
| 2924 |
dc->is_jmp = DISAS_UPDATE; |
| 2925 |
break;
|
| 2926 |
case 6: |
| 2927 |
LOG_DIS("break %d\n", dc->op1);
|
| 2928 |
cris_evaluate_flags (dc); |
| 2929 |
/* break. */
|
| 2930 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
| 2931 |
|
| 2932 |
/* Breaks start at 16 in the exception vector. */
|
| 2933 |
t_gen_mov_env_TN(trap_vector, |
| 2934 |
tcg_const_tl(dc->op1 + 16));
|
| 2935 |
t_gen_raise_exception(EXCP_BREAK); |
| 2936 |
dc->is_jmp = DISAS_UPDATE; |
| 2937 |
break;
|
| 2938 |
default:
|
| 2939 |
printf ("op2=%x\n", dc->op2);
|
| 2940 |
BUG(); |
| 2941 |
break;
|
| 2942 |
|
| 2943 |
} |
| 2944 |
return 2; |
| 2945 |
} |
| 2946 |
|
| 2947 |
static int dec_ftag_fidx_d_m(DisasContext *dc) |
| 2948 |
{
|
| 2949 |
return 2; |
| 2950 |
} |
| 2951 |
|
| 2952 |
static int dec_ftag_fidx_i_m(DisasContext *dc) |
| 2953 |
{
|
| 2954 |
return 2; |
| 2955 |
} |
| 2956 |
|
| 2957 |
static int dec_null(DisasContext *dc) |
| 2958 |
{
|
| 2959 |
printf ("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
|
| 2960 |
dc->pc, dc->opcode, dc->op1, dc->op2); |
| 2961 |
fflush(NULL);
|
| 2962 |
BUG(); |
| 2963 |
return 2; |
| 2964 |
} |
| 2965 |
|
| 2966 |
static struct decoder_info { |
| 2967 |
struct {
|
| 2968 |
uint32_t bits; |
| 2969 |
uint32_t mask; |
| 2970 |
}; |
| 2971 |
int (*dec)(DisasContext *dc);
|
| 2972 |
} decinfo[] = {
|
| 2973 |
/* Order matters here. */
|
| 2974 |
{DEC_MOVEQ, dec_moveq},
|
| 2975 |
{DEC_BTSTQ, dec_btstq},
|
| 2976 |
{DEC_CMPQ, dec_cmpq},
|
| 2977 |
{DEC_ADDOQ, dec_addoq},
|
| 2978 |
{DEC_ADDQ, dec_addq},
|
| 2979 |
{DEC_SUBQ, dec_subq},
|
| 2980 |
{DEC_ANDQ, dec_andq},
|
| 2981 |
{DEC_ORQ, dec_orq},
|
| 2982 |
{DEC_ASRQ, dec_asrq},
|
| 2983 |
{DEC_LSLQ, dec_lslq},
|
| 2984 |
{DEC_LSRQ, dec_lsrq},
|
| 2985 |
{DEC_BCCQ, dec_bccq},
|
| 2986 |
|
| 2987 |
{DEC_BCC_IM, dec_bcc_im},
|
| 2988 |
{DEC_JAS_IM, dec_jas_im},
|
| 2989 |
{DEC_JAS_R, dec_jas_r},
|
| 2990 |
{DEC_JASC_IM, dec_jasc_im},
|
| 2991 |
{DEC_JASC_R, dec_jasc_r},
|
| 2992 |
{DEC_BAS_IM, dec_bas_im},
|
| 2993 |
{DEC_BASC_IM, dec_basc_im},
|
| 2994 |
{DEC_JUMP_P, dec_jump_p},
|
| 2995 |
{DEC_LAPC_IM, dec_lapc_im},
|
| 2996 |
{DEC_LAPCQ, dec_lapcq},
|
| 2997 |
|
| 2998 |
{DEC_RFE_ETC, dec_rfe_etc},
|
| 2999 |
{DEC_ADDC_MR, dec_addc_mr},
|
| 3000 |
|
| 3001 |
{DEC_MOVE_MP, dec_move_mp},
|
| 3002 |
{DEC_MOVE_PM, dec_move_pm},
|
| 3003 |
{DEC_MOVEM_MR, dec_movem_mr},
|
| 3004 |
{DEC_MOVEM_RM, dec_movem_rm},
|
| 3005 |
{DEC_MOVE_PR, dec_move_pr},
|
| 3006 |
{DEC_SCC_R, dec_scc_r},
|
| 3007 |
{DEC_SETF, dec_setclrf},
|
| 3008 |
{DEC_CLEARF, dec_setclrf},
|
| 3009 |
|
| 3010 |
{DEC_MOVE_SR, dec_move_sr},
|
| 3011 |
{DEC_MOVE_RP, dec_move_rp},
|
| 3012 |
{DEC_SWAP_R, dec_swap_r},
|
| 3013 |
{DEC_ABS_R, dec_abs_r},
|
| 3014 |
{DEC_LZ_R, dec_lz_r},
|
| 3015 |
{DEC_MOVE_RS, dec_move_rs},
|
| 3016 |
{DEC_BTST_R, dec_btst_r},
|
| 3017 |
{DEC_ADDC_R, dec_addc_r},
|
| 3018 |
|
| 3019 |
{DEC_DSTEP_R, dec_dstep_r},
|
| 3020 |
{DEC_XOR_R, dec_xor_r},
|
| 3021 |
{DEC_MCP_R, dec_mcp_r},
|
| 3022 |
{DEC_CMP_R, dec_cmp_r},
|
| 3023 |
|
| 3024 |
{DEC_ADDI_R, dec_addi_r},
|
| 3025 |
{DEC_ADDI_ACR, dec_addi_acr},
|
| 3026 |
|
| 3027 |
{DEC_ADD_R, dec_add_r},
|
| 3028 |
{DEC_SUB_R, dec_sub_r},
|
| 3029 |
|
| 3030 |
{DEC_ADDU_R, dec_addu_r},
|
| 3031 |
{DEC_ADDS_R, dec_adds_r},
|
| 3032 |
{DEC_SUBU_R, dec_subu_r},
|
| 3033 |
{DEC_SUBS_R, dec_subs_r},
|
| 3034 |
{DEC_LSL_R, dec_lsl_r},
|
| 3035 |
|
| 3036 |
{DEC_AND_R, dec_and_r},
|
| 3037 |
{DEC_OR_R, dec_or_r},
|
| 3038 |
{DEC_BOUND_R, dec_bound_r},
|
| 3039 |
{DEC_ASR_R, dec_asr_r},
|
| 3040 |
{DEC_LSR_R, dec_lsr_r},
|
| 3041 |
|
| 3042 |
{DEC_MOVU_R, dec_movu_r},
|
| 3043 |
{DEC_MOVS_R, dec_movs_r},
|
| 3044 |
{DEC_NEG_R, dec_neg_r},
|
| 3045 |
{DEC_MOVE_R, dec_move_r},
|
| 3046 |
|
| 3047 |
{DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
|
| 3048 |
{DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
|
| 3049 |
|
| 3050 |
{DEC_MULS_R, dec_muls_r},
|
| 3051 |
{DEC_MULU_R, dec_mulu_r},
|
| 3052 |
|
| 3053 |
{DEC_ADDU_M, dec_addu_m},
|
| 3054 |
{DEC_ADDS_M, dec_adds_m},
|
| 3055 |
{DEC_SUBU_M, dec_subu_m},
|
| 3056 |
{DEC_SUBS_M, dec_subs_m},
|
| 3057 |
|
| 3058 |
{DEC_CMPU_M, dec_cmpu_m},
|
| 3059 |
{DEC_CMPS_M, dec_cmps_m},
|
| 3060 |
{DEC_MOVU_M, dec_movu_m},
|
| 3061 |
{DEC_MOVS_M, dec_movs_m},
|
| 3062 |
|
| 3063 |
{DEC_CMP_M, dec_cmp_m},
|
| 3064 |
{DEC_ADDO_M, dec_addo_m},
|
| 3065 |
{DEC_BOUND_M, dec_bound_m},
|
| 3066 |
{DEC_ADD_M, dec_add_m},
|
| 3067 |
{DEC_SUB_M, dec_sub_m},
|
| 3068 |
{DEC_AND_M, dec_and_m},
|
| 3069 |
{DEC_OR_M, dec_or_m},
|
| 3070 |
{DEC_MOVE_RM, dec_move_rm},
|
| 3071 |
{DEC_TEST_M, dec_test_m},
|
| 3072 |
{DEC_MOVE_MR, dec_move_mr},
|
| 3073 |
|
| 3074 |
{{0, 0}, dec_null}
|
| 3075 |
}; |
| 3076 |
|
| 3077 |
static unsigned int crisv32_decoder(DisasContext *dc) |
| 3078 |
{
|
| 3079 |
int insn_len = 2; |
| 3080 |
int i;
|
| 3081 |
|
| 3082 |
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
|
| 3083 |
tcg_gen_debug_insn_start(dc->pc); |
| 3084 |
|
| 3085 |
/* Load a halfword onto the instruction register. */
|
| 3086 |
dc->ir = cris_fetch(dc, dc->pc, 2, 0); |
| 3087 |
|
| 3088 |
/* Now decode it. */
|
| 3089 |
dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11); |
| 3090 |
dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3); |
| 3091 |
dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15); |
| 3092 |
dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4); |
| 3093 |
dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5); |
| 3094 |
dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); |
| 3095 |
|
| 3096 |
/* Large switch for all insns. */
|
| 3097 |
for (i = 0; i < ARRAY_SIZE(decinfo); i++) { |
| 3098 |
if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits)
|
| 3099 |
{
|
| 3100 |
insn_len = decinfo[i].dec(dc); |
| 3101 |
break;
|
| 3102 |
} |
| 3103 |
} |
| 3104 |
|
| 3105 |
#if !defined(CONFIG_USER_ONLY)
|
| 3106 |
/* Single-stepping ? */
|
| 3107 |
if (dc->tb_flags & S_FLAG) {
|
| 3108 |
int l1;
|
| 3109 |
|
| 3110 |
l1 = gen_new_label(); |
| 3111 |
tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1); |
| 3112 |
/* We treat SPC as a break with an odd trap vector. */
|
| 3113 |
cris_evaluate_flags (dc); |
| 3114 |
t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
|
| 3115 |
tcg_gen_movi_tl(env_pc, dc->pc + insn_len); |
| 3116 |
tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len); |
| 3117 |
t_gen_raise_exception(EXCP_BREAK); |
| 3118 |
gen_set_label(l1); |
| 3119 |
} |
| 3120 |
#endif
|
| 3121 |
return insn_len;
|
| 3122 |
} |
| 3123 |
|
| 3124 |
static void check_breakpoint(CPUState *env, DisasContext *dc) |
| 3125 |
{
|
| 3126 |
CPUBreakpoint *bp; |
| 3127 |
|
| 3128 |
if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
|
| 3129 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
|
| 3130 |
if (bp->pc == dc->pc) {
|
| 3131 |
cris_evaluate_flags (dc); |
| 3132 |
tcg_gen_movi_tl(env_pc, dc->pc); |
| 3133 |
t_gen_raise_exception(EXCP_DEBUG); |
| 3134 |
dc->is_jmp = DISAS_UPDATE; |
| 3135 |
} |
| 3136 |
} |
| 3137 |
} |
| 3138 |
} |
| 3139 |
|
| 3140 |
#include "translate_v10.c" |
| 3141 |
|
| 3142 |
/*
|
| 3143 |
* Delay slots on QEMU/CRIS.
|
| 3144 |
*
|
| 3145 |
* If an exception hits on a delayslot, the core will let ERP (the Exception
|
| 3146 |
* Return Pointer) point to the branch (the previous) insn and set the lsb to
|
| 3147 |
* to give SW a hint that the exception actually hit on the dslot.
|
| 3148 |
*
|
| 3149 |
* CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
|
| 3150 |
* the core and any jmp to an odd addresses will mask off that lsb. It is
|
| 3151 |
* simply there to let sw know there was an exception on a dslot.
|
| 3152 |
*
|
| 3153 |
* When the software returns from an exception, the branch will re-execute.
|
| 3154 |
* On QEMU care needs to be taken when a branch+delayslot sequence is broken
|
| 3155 |
* and the branch and delayslot dont share pages.
|
| 3156 |
*
|
| 3157 |
* The TB contaning the branch insn will set up env->btarget and evaluate
|
| 3158 |
* env->btaken. When the translation loop exits we will note that the branch
|
| 3159 |
* sequence is broken and let env->dslot be the size of the branch insn (those
|
| 3160 |
* vary in length).
|
| 3161 |
*
|
| 3162 |
* The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
|
| 3163 |
* set). It will also expect to have env->dslot setup with the size of the
|
| 3164 |
* delay slot so that env->pc - env->dslot point to the branch insn. This TB
|
| 3165 |
* will execute the dslot and take the branch, either to btarget or just one
|
| 3166 |
* insn ahead.
|
| 3167 |
*
|
| 3168 |
* When exceptions occur, we check for env->dslot in do_interrupt to detect
|
| 3169 |
* broken branch sequences and setup $erp accordingly (i.e let it point to the
|
| 3170 |
* branch and set lsb). Then env->dslot gets cleared so that the exception
|
| 3171 |
* handler can enter. When returning from exceptions (jump $erp) the lsb gets
|
| 3172 |
* masked off and we will reexecute the branch insn.
|
| 3173 |
*
|
| 3174 |
*/
|
| 3175 |
|
| 3176 |
/* generate intermediate code for basic block 'tb'. */
|
| 3177 |
static void |
| 3178 |
gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, |
| 3179 |
int search_pc)
|
| 3180 |
{
|
| 3181 |
uint16_t *gen_opc_end; |
| 3182 |
uint32_t pc_start; |
| 3183 |
unsigned int insn_len; |
| 3184 |
int j, lj;
|
| 3185 |
struct DisasContext ctx;
|
| 3186 |
struct DisasContext *dc = &ctx;
|
| 3187 |
uint32_t next_page_start; |
| 3188 |
target_ulong npc; |
| 3189 |
int num_insns;
|
| 3190 |
int max_insns;
|
| 3191 |
|
| 3192 |
qemu_log_try_set_file(stderr); |
| 3193 |
|
| 3194 |
if (env->pregs[PR_VR] == 32) { |
| 3195 |
dc->decoder = crisv32_decoder; |
| 3196 |
dc->clear_locked_irq = 0;
|
| 3197 |
} else {
|
| 3198 |
dc->decoder = crisv10_decoder; |
| 3199 |
dc->clear_locked_irq = 1;
|
| 3200 |
} |
| 3201 |
|
| 3202 |
/* Odd PC indicates that branch is rexecuting due to exception in the
|
| 3203 |
* delayslot, like in real hw.
|
| 3204 |
*/
|
| 3205 |
pc_start = tb->pc & ~1;
|
| 3206 |
dc->env = env; |
| 3207 |
dc->tb = tb; |
| 3208 |
|
| 3209 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
| 3210 |
|
| 3211 |
dc->is_jmp = DISAS_NEXT; |
| 3212 |
dc->ppc = pc_start; |
| 3213 |
dc->pc = pc_start; |
| 3214 |
dc->singlestep_enabled = env->singlestep_enabled; |
| 3215 |
dc->flags_uptodate = 1;
|
| 3216 |
dc->flagx_known = 1;
|
| 3217 |
dc->flags_x = tb->flags & X_FLAG; |
| 3218 |
dc->cc_x_uptodate = 0;
|
| 3219 |
dc->cc_mask = 0;
|
| 3220 |
dc->update_cc = 0;
|
| 3221 |
dc->clear_prefix = 0;
|
| 3222 |
|
| 3223 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
| 3224 |
dc->cc_size_uptodate = -1;
|
| 3225 |
|
| 3226 |
/* Decode TB flags. */
|
| 3227 |
dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \ |
| 3228 |
| X_FLAG | PFIX_FLAG); |
| 3229 |
dc->delayed_branch = !!(tb->flags & 7);
|
| 3230 |
if (dc->delayed_branch)
|
| 3231 |
dc->jmp = JMP_INDIRECT; |
| 3232 |
else
|
| 3233 |
dc->jmp = JMP_NOJMP; |
| 3234 |
|
| 3235 |
dc->cpustate_changed = 0;
|
| 3236 |
|
| 3237 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
| 3238 |
qemu_log( |
| 3239 |
"srch=%d pc=%x %x flg=%" PRIx64 " bt=%x ds=%u ccs=%x\n" |
| 3240 |
"pid=%x usp=%x\n"
|
| 3241 |
"%x.%x.%x.%x\n"
|
| 3242 |
"%x.%x.%x.%x\n"
|
| 3243 |
"%x.%x.%x.%x\n"
|
| 3244 |
"%x.%x.%x.%x\n",
|
| 3245 |
search_pc, dc->pc, dc->ppc, |
| 3246 |
(uint64_t)tb->flags, |
| 3247 |
env->btarget, (unsigned)tb->flags & 7, |
| 3248 |
env->pregs[PR_CCS], |
| 3249 |
env->pregs[PR_PID], env->pregs[PR_USP], |
| 3250 |
env->regs[0], env->regs[1], env->regs[2], env->regs[3], |
| 3251 |
env->regs[4], env->regs[5], env->regs[6], env->regs[7], |
| 3252 |
env->regs[8], env->regs[9], |
| 3253 |
env->regs[10], env->regs[11], |
| 3254 |
env->regs[12], env->regs[13], |
| 3255 |
env->regs[14], env->regs[15]); |
| 3256 |
qemu_log("--------------\n");
|
| 3257 |
qemu_log("IN: %s\n", lookup_symbol(pc_start));
|
| 3258 |
} |
| 3259 |
|
| 3260 |
next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; |
| 3261 |
lj = -1;
|
| 3262 |
num_insns = 0;
|
| 3263 |
max_insns = tb->cflags & CF_COUNT_MASK; |
| 3264 |
if (max_insns == 0) |
| 3265 |
max_insns = CF_COUNT_MASK; |
| 3266 |
|
| 3267 |
gen_icount_start(); |
| 3268 |
do
|
| 3269 |
{
|
| 3270 |
check_breakpoint(env, dc); |
| 3271 |
|
| 3272 |
if (search_pc) {
|
| 3273 |
j = gen_opc_ptr - gen_opc_buf; |
| 3274 |
if (lj < j) {
|
| 3275 |
lj++; |
| 3276 |
while (lj < j)
|
| 3277 |
gen_opc_instr_start[lj++] = 0;
|
| 3278 |
} |
| 3279 |
if (dc->delayed_branch == 1) |
| 3280 |
gen_opc_pc[lj] = dc->ppc | 1;
|
| 3281 |
else
|
| 3282 |
gen_opc_pc[lj] = dc->pc; |
| 3283 |
gen_opc_instr_start[lj] = 1;
|
| 3284 |
gen_opc_icount[lj] = num_insns; |
| 3285 |
} |
| 3286 |
|
| 3287 |
/* Pretty disas. */
|
| 3288 |
LOG_DIS("%8.8x:\t", dc->pc);
|
| 3289 |
|
| 3290 |
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) |
| 3291 |
gen_io_start(); |
| 3292 |
dc->clear_x = 1;
|
| 3293 |
|
| 3294 |
insn_len = dc->decoder(dc); |
| 3295 |
dc->ppc = dc->pc; |
| 3296 |
dc->pc += insn_len; |
| 3297 |
if (dc->clear_x)
|
| 3298 |
cris_clear_x_flag(dc); |
| 3299 |
|
| 3300 |
num_insns++; |
| 3301 |
/* Check for delayed branches here. If we do it before
|
| 3302 |
actually generating any host code, the simulator will just
|
| 3303 |
loop doing nothing for on this program location. */
|
| 3304 |
if (dc->delayed_branch) {
|
| 3305 |
dc->delayed_branch--; |
| 3306 |
if (dc->delayed_branch == 0) |
| 3307 |
{
|
| 3308 |
if (tb->flags & 7) |
| 3309 |
t_gen_mov_env_TN(dslot, |
| 3310 |
tcg_const_tl(0));
|
| 3311 |
if (dc->cpustate_changed || !dc->flagx_known
|
| 3312 |
|| (dc->flags_x != (tb->flags & X_FLAG))) {
|
| 3313 |
cris_store_direct_jmp(dc); |
| 3314 |
} |
| 3315 |
|
| 3316 |
if (dc->clear_locked_irq) {
|
| 3317 |
dc->clear_locked_irq = 0;
|
| 3318 |
t_gen_mov_env_TN(locked_irq, |
| 3319 |
tcg_const_tl(0));
|
| 3320 |
} |
| 3321 |
|
| 3322 |
if (dc->jmp == JMP_DIRECT_CC) {
|
| 3323 |
int l1;
|
| 3324 |
|
| 3325 |
l1 = gen_new_label(); |
| 3326 |
cris_evaluate_flags(dc); |
| 3327 |
|
| 3328 |
/* Conditional jmp. */
|
| 3329 |
tcg_gen_brcondi_tl(TCG_COND_EQ, |
| 3330 |
env_btaken, 0, l1);
|
| 3331 |
gen_goto_tb(dc, 1, dc->jmp_pc);
|
| 3332 |
gen_set_label(l1); |
| 3333 |
gen_goto_tb(dc, 0, dc->pc);
|
| 3334 |
dc->is_jmp = DISAS_TB_JUMP; |
| 3335 |
dc->jmp = JMP_NOJMP; |
| 3336 |
} else if (dc->jmp == JMP_DIRECT) { |
| 3337 |
cris_evaluate_flags(dc); |
| 3338 |
gen_goto_tb(dc, 0, dc->jmp_pc);
|
| 3339 |
dc->is_jmp = DISAS_TB_JUMP; |
| 3340 |
dc->jmp = JMP_NOJMP; |
| 3341 |
} else {
|
| 3342 |
t_gen_cc_jmp(env_btarget, |
| 3343 |
tcg_const_tl(dc->pc)); |
| 3344 |
dc->is_jmp = DISAS_JUMP; |
| 3345 |
} |
| 3346 |
break;
|
| 3347 |
} |
| 3348 |
} |
| 3349 |
|
| 3350 |
/* If we are rexecuting a branch due to exceptions on
|
| 3351 |
delay slots dont break. */
|
| 3352 |
if (!(tb->pc & 1) && env->singlestep_enabled) |
| 3353 |
break;
|
| 3354 |
} while (!dc->is_jmp && !dc->cpustate_changed
|
| 3355 |
&& gen_opc_ptr < gen_opc_end |
| 3356 |
&& !singlestep |
| 3357 |
&& (dc->pc < next_page_start) |
| 3358 |
&& num_insns < max_insns); |
| 3359 |
|
| 3360 |
if (dc->clear_locked_irq)
|
| 3361 |
t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
|
| 3362 |
|
| 3363 |
npc = dc->pc; |
| 3364 |
|
| 3365 |
if (tb->cflags & CF_LAST_IO)
|
| 3366 |
gen_io_end(); |
| 3367 |
/* Force an update if the per-tb cpu state has changed. */
|
| 3368 |
if (dc->is_jmp == DISAS_NEXT
|
| 3369 |
&& (dc->cpustate_changed || !dc->flagx_known |
| 3370 |
|| (dc->flags_x != (tb->flags & X_FLAG)))) {
|
| 3371 |
dc->is_jmp = DISAS_UPDATE; |
| 3372 |
tcg_gen_movi_tl(env_pc, npc); |
| 3373 |
} |
| 3374 |
/* Broken branch+delayslot sequence. */
|
| 3375 |
if (dc->delayed_branch == 1) { |
| 3376 |
/* Set env->dslot to the size of the branch insn. */
|
| 3377 |
t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc)); |
| 3378 |
cris_store_direct_jmp(dc); |
| 3379 |
} |
| 3380 |
|
| 3381 |
cris_evaluate_flags (dc); |
| 3382 |
|
| 3383 |
if (unlikely(env->singlestep_enabled)) {
|
| 3384 |
if (dc->is_jmp == DISAS_NEXT)
|
| 3385 |
tcg_gen_movi_tl(env_pc, npc); |
| 3386 |
t_gen_raise_exception(EXCP_DEBUG); |
| 3387 |
} else {
|
| 3388 |
switch(dc->is_jmp) {
|
| 3389 |
case DISAS_NEXT:
|
| 3390 |
gen_goto_tb(dc, 1, npc);
|
| 3391 |
break;
|
| 3392 |
default:
|
| 3393 |
case DISAS_JUMP:
|
| 3394 |
case DISAS_UPDATE:
|
| 3395 |
/* indicate that the hash table must be used
|
| 3396 |
to find the next TB */
|
| 3397 |
tcg_gen_exit_tb(0);
|
| 3398 |
break;
|
| 3399 |
case DISAS_SWI:
|
| 3400 |
case DISAS_TB_JUMP:
|
| 3401 |
/* nothing more to generate */
|
| 3402 |
break;
|
| 3403 |
} |
| 3404 |
} |
| 3405 |
gen_icount_end(tb, num_insns); |
| 3406 |
*gen_opc_ptr = INDEX_op_end; |
| 3407 |
if (search_pc) {
|
| 3408 |
j = gen_opc_ptr - gen_opc_buf; |
| 3409 |
lj++; |
| 3410 |
while (lj <= j)
|
| 3411 |
gen_opc_instr_start[lj++] = 0;
|
| 3412 |
} else {
|
| 3413 |
tb->size = dc->pc - pc_start; |
| 3414 |
tb->icount = num_insns; |
| 3415 |
} |
| 3416 |
|
| 3417 |
#ifdef DEBUG_DISAS
|
| 3418 |
#if !DISAS_CRIS
|
| 3419 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
| 3420 |
log_target_disas(pc_start, dc->pc - pc_start, |
| 3421 |
dc->env->pregs[PR_VR]); |
| 3422 |
qemu_log("\nisize=%d osize=%td\n",
|
| 3423 |
dc->pc - pc_start, gen_opc_ptr - gen_opc_buf); |
| 3424 |
} |
| 3425 |
#endif
|
| 3426 |
#endif
|
| 3427 |
} |
| 3428 |
|
| 3429 |
void gen_intermediate_code (CPUState *env, struct TranslationBlock *tb) |
| 3430 |
{
|
| 3431 |
gen_intermediate_code_internal(env, tb, 0);
|
| 3432 |
} |
| 3433 |
|
| 3434 |
void gen_intermediate_code_pc (CPUState *env, struct TranslationBlock *tb) |
| 3435 |
{
|
| 3436 |
gen_intermediate_code_internal(env, tb, 1);
|
| 3437 |
} |
| 3438 |
|
| 3439 |
void cpu_dump_state (CPUState *env, FILE *f, fprintf_function cpu_fprintf,
|
| 3440 |
int flags)
|
| 3441 |
{
|
| 3442 |
int i;
|
| 3443 |
uint32_t srs; |
| 3444 |
|
| 3445 |
if (!env || !f)
|
| 3446 |
return;
|
| 3447 |
|
| 3448 |
cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
|
| 3449 |
"cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
|
| 3450 |
env->pc, env->pregs[PR_CCS], env->btaken, env->btarget, |
| 3451 |
env->cc_op, |
| 3452 |
env->cc_src, env->cc_dest, env->cc_result, env->cc_mask); |
| 3453 |
|
| 3454 |
|
| 3455 |
for (i = 0; i < 16; i++) { |
| 3456 |
cpu_fprintf(f, "%s=%8.8x ",regnames[i], env->regs[i]);
|
| 3457 |
if ((i + 1) % 4 == 0) |
| 3458 |
cpu_fprintf(f, "\n");
|
| 3459 |
} |
| 3460 |
cpu_fprintf(f, "\nspecial regs:\n");
|
| 3461 |
for (i = 0; i < 16; i++) { |
| 3462 |
cpu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]);
|
| 3463 |
if ((i + 1) % 4 == 0) |
| 3464 |
cpu_fprintf(f, "\n");
|
| 3465 |
} |
| 3466 |
srs = env->pregs[PR_SRS]; |
| 3467 |
cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
|
| 3468 |
if (srs < 256) { |
| 3469 |
for (i = 0; i < 16; i++) { |
| 3470 |
cpu_fprintf(f, "s%2.2d=%8.8x ",
|
| 3471 |
i, env->sregs[srs][i]); |
| 3472 |
if ((i + 1) % 4 == 0) |
| 3473 |
cpu_fprintf(f, "\n");
|
| 3474 |
} |
| 3475 |
} |
| 3476 |
cpu_fprintf(f, "\n\n");
|
| 3477 |
|
| 3478 |
} |
| 3479 |
|
| 3480 |
struct
|
| 3481 |
{
|
| 3482 |
uint32_t vr; |
| 3483 |
const char *name; |
| 3484 |
} cris_cores[] = {
|
| 3485 |
{8, "crisv8"},
|
| 3486 |
{9, "crisv9"},
|
| 3487 |
{10, "crisv10"},
|
| 3488 |
{11, "crisv11"},
|
| 3489 |
{32, "crisv32"},
|
| 3490 |
}; |
| 3491 |
|
| 3492 |
void cris_cpu_list(FILE *f, fprintf_function cpu_fprintf)
|
| 3493 |
{
|
| 3494 |
unsigned int i; |
| 3495 |
|
| 3496 |
(*cpu_fprintf)(f, "Available CPUs:\n");
|
| 3497 |
for (i = 0; i < ARRAY_SIZE(cris_cores); i++) { |
| 3498 |
(*cpu_fprintf)(f, " %s\n", cris_cores[i].name);
|
| 3499 |
} |
| 3500 |
} |
| 3501 |
|
| 3502 |
static uint32_t vr_by_name(const char *name) |
| 3503 |
{
|
| 3504 |
unsigned int i; |
| 3505 |
for (i = 0; i < ARRAY_SIZE(cris_cores); i++) { |
| 3506 |
if (strcmp(name, cris_cores[i].name) == 0) { |
| 3507 |
return cris_cores[i].vr;
|
| 3508 |
} |
| 3509 |
} |
| 3510 |
return 32; |
| 3511 |
} |
| 3512 |
|
| 3513 |
CPUCRISState *cpu_cris_init (const char *cpu_model) |
| 3514 |
{
|
| 3515 |
CPUCRISState *env; |
| 3516 |
static int tcg_initialized = 0; |
| 3517 |
int i;
|
| 3518 |
|
| 3519 |
env = g_malloc0(sizeof(CPUCRISState));
|
| 3520 |
|
| 3521 |
env->pregs[PR_VR] = vr_by_name(cpu_model); |
| 3522 |
cpu_exec_init(env); |
| 3523 |
cpu_reset(env); |
| 3524 |
qemu_init_vcpu(env); |
| 3525 |
|
| 3526 |
if (tcg_initialized)
|
| 3527 |
return env;
|
| 3528 |
|
| 3529 |
tcg_initialized = 1;
|
| 3530 |
|
| 3531 |
#define GEN_HELPER 2 |
| 3532 |
#include "helper.h" |
| 3533 |
|
| 3534 |
if (env->pregs[PR_VR] < 32) { |
| 3535 |
cpu_crisv10_init(env); |
| 3536 |
return env;
|
| 3537 |
} |
| 3538 |
|
| 3539 |
|
| 3540 |
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
|
| 3541 |
cc_x = tcg_global_mem_new(TCG_AREG0, |
| 3542 |
offsetof(CPUState, cc_x), "cc_x");
|
| 3543 |
cc_src = tcg_global_mem_new(TCG_AREG0, |
| 3544 |
offsetof(CPUState, cc_src), "cc_src");
|
| 3545 |
cc_dest = tcg_global_mem_new(TCG_AREG0, |
| 3546 |
offsetof(CPUState, cc_dest), |
| 3547 |
"cc_dest");
|
| 3548 |
cc_result = tcg_global_mem_new(TCG_AREG0, |
| 3549 |
offsetof(CPUState, cc_result), |
| 3550 |
"cc_result");
|
| 3551 |
cc_op = tcg_global_mem_new(TCG_AREG0, |
| 3552 |
offsetof(CPUState, cc_op), "cc_op");
|
| 3553 |
cc_size = tcg_global_mem_new(TCG_AREG0, |
| 3554 |
offsetof(CPUState, cc_size), |
| 3555 |
"cc_size");
|
| 3556 |
cc_mask = tcg_global_mem_new(TCG_AREG0, |
| 3557 |
offsetof(CPUState, cc_mask), |
| 3558 |
"cc_mask");
|
| 3559 |
|
| 3560 |
env_pc = tcg_global_mem_new(TCG_AREG0, |
| 3561 |
offsetof(CPUState, pc), |
| 3562 |
"pc");
|
| 3563 |
env_btarget = tcg_global_mem_new(TCG_AREG0, |
| 3564 |
offsetof(CPUState, btarget), |
| 3565 |
"btarget");
|
| 3566 |
env_btaken = tcg_global_mem_new(TCG_AREG0, |
| 3567 |
offsetof(CPUState, btaken), |
| 3568 |
"btaken");
|
| 3569 |
for (i = 0; i < 16; i++) { |
| 3570 |
cpu_R[i] = tcg_global_mem_new(TCG_AREG0, |
| 3571 |
offsetof(CPUState, regs[i]), |
| 3572 |
regnames[i]); |
| 3573 |
} |
| 3574 |
for (i = 0; i < 16; i++) { |
| 3575 |
cpu_PR[i] = tcg_global_mem_new(TCG_AREG0, |
| 3576 |
offsetof(CPUState, pregs[i]), |
| 3577 |
pregnames[i]); |
| 3578 |
} |
| 3579 |
|
| 3580 |
return env;
|
| 3581 |
} |
| 3582 |
|
| 3583 |
void cpu_reset (CPUCRISState *env)
|
| 3584 |
{
|
| 3585 |
uint32_t vr; |
| 3586 |
|
| 3587 |
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
|
| 3588 |
qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
|
| 3589 |
log_cpu_state(env, 0);
|
| 3590 |
} |
| 3591 |
|
| 3592 |
vr = env->pregs[PR_VR]; |
| 3593 |
memset(env, 0, offsetof(CPUCRISState, breakpoints));
|
| 3594 |
env->pregs[PR_VR] = vr; |
| 3595 |
tlb_flush(env, 1);
|
| 3596 |
|
| 3597 |
#if defined(CONFIG_USER_ONLY)
|
| 3598 |
/* start in user mode with interrupts enabled. */
|
| 3599 |
env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG; |
| 3600 |
#else
|
| 3601 |
cris_mmu_init(env); |
| 3602 |
env->pregs[PR_CCS] = 0;
|
| 3603 |
#endif
|
| 3604 |
} |
| 3605 |
|
| 3606 |
void restore_state_to_opc(CPUState *env, TranslationBlock *tb, int pc_pos) |
| 3607 |
{
|
| 3608 |
env->pc = gen_opc_pc[pc_pos]; |
| 3609 |
} |