--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/target-cris/translate.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,3586 @@
+/*
+ * CRIS emulation for qemu: main translation routines.
+ *
+ * Copyright (c) 2008 AXIS Communications AB
+ * Written by Edgar E. Iglesias.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * FIXME:
+ * The condition code translation is in need of attention.
+ */
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <assert.h>
+
+#include "cpu.h"
+#include "exec-all.h"
+#include "disas.h"
+#include "tcg-op.h"
+#include "helper.h"
+#include "crisv32-decode.h"
+#include "qemu-common.h"
+
+#define GEN_HELPER 1
+#include "helper.h"
+
+#define DISAS_CRIS 0
+#if DISAS_CRIS
+#define DIS(x) if (loglevel & CPU_LOG_TB_IN_ASM) x
+#else
+#define DIS(x)
+#endif
+
+#define D(x)
+#define BUG() (gen_BUG(dc, __FILE__, __LINE__))
+#define BUG_ON(x) ({if (x) BUG();})
+
+#define DISAS_SWI 5
+
+/* Used by the decoder. */
+#define EXTRACT_FIELD(src, start, end) \
+ (((src) >> start) & ((1 << (end - start + 1)) - 1))
+
+#define CC_MASK_NZ 0xc
+#define CC_MASK_NZV 0xe
+#define CC_MASK_NZVC 0xf
+#define CC_MASK_RNZV 0x10e
+
+static TCGv_ptr cpu_env;
+static TCGv cpu_R[16];
+static TCGv cpu_PR[16];
+static TCGv cc_x;
+static TCGv cc_src;
+static TCGv cc_dest;
+static TCGv cc_result;
+static TCGv cc_op;
+static TCGv cc_size;
+static TCGv cc_mask;
+
+static TCGv env_btaken;
+static TCGv env_btarget;
+static TCGv env_pc;
+
+#include "gen-icount.h"
+
+/* This is the state at translation time. */
+typedef struct DisasContext {
+ CPUState *env;
+ target_ulong pc, ppc;
+
+ /* Decoder. */
+ uint32_t ir;
+ uint32_t opcode;
+ unsigned int op1;
+ unsigned int op2;
+ unsigned int zsize, zzsize;
+ unsigned int mode;
+ unsigned int postinc;
+
+ int update_cc;
+ int cc_op;
+ int cc_size;
+ uint32_t cc_mask;
+
+ int cc_size_uptodate; /* -1 invalid or last written value. */
+
+ int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not uptodate. */
+ int flags_uptodate; /* Wether or not $ccs is uptodate. */
+ int flagx_known; /* Wether or not flags_x has the x flag known at
+ translation time. */
+ int flags_x;
+
+ int clear_x; /* Clear x after this insn? */
+ int cpustate_changed;
+ unsigned int tb_flags; /* tb dependent flags. */
+ int is_jmp;
+
+#define JMP_NOJMP 0
+#define JMP_DIRECT 1
+#define JMP_INDIRECT 2
+ int jmp; /* 0=nojmp, 1=direct, 2=indirect. */
+ uint32_t jmp_pc;
+
+ int delayed_branch;
+
+ struct TranslationBlock *tb;
+ int singlestep_enabled;
+} DisasContext;
+
+static void gen_BUG(DisasContext *dc, const char *file, int line)
+{
+ printf ("BUG: pc=%x %s %d\n", dc->pc, file, line);
+ fprintf (logfile, "BUG: pc=%x %s %d\n", dc->pc, file, line);
+ cpu_abort(dc->env, "%s:%d\n", file, line);
+}
+
+static const char *regnames[] =
+{
+ "$r0", "$r1", "$r2", "$r3",
+ "$r4", "$r5", "$r6", "$r7",
+ "$r8", "$r9", "$r10", "$r11",
+ "$r12", "$r13", "$sp", "$acr",
+};
+static const char *pregnames[] =
+{
+ "$bz", "$vr", "$pid", "$srs",
+ "$wz", "$exs", "$eda", "$mof",
+ "$dz", "$ebp", "$erp", "$srp",
+ "$nrp", "$ccs", "$usp", "$spc",
+};
+
+/* We need this table to handle preg-moves with implicit width. */
+static int preg_sizes[] = {
+ 1, /* bz. */
+ 1, /* vr. */
+ 4, /* pid. */
+ 1, /* srs. */
+ 2, /* wz. */
+ 4, 4, 4,
+ 4, 4, 4, 4,
+ 4, 4, 4, 4,
+};
+
+#define t_gen_mov_TN_env(tn, member) \
+ _t_gen_mov_TN_env((tn), offsetof(CPUState, member))
+#define t_gen_mov_env_TN(member, tn) \
+ _t_gen_mov_env_TN(offsetof(CPUState, member), (tn))
+
+static inline void t_gen_mov_TN_reg(TCGv tn, int r)
+{
+ if (r < 0 || r > 15)
+ fprintf(stderr, "wrong register read $r%d\n", r);
+ tcg_gen_mov_tl(tn, cpu_R[r]);
+}
+static inline void t_gen_mov_reg_TN(int r, TCGv tn)
+{
+ if (r < 0 || r > 15)
+ fprintf(stderr, "wrong register write $r%d\n", r);
+ tcg_gen_mov_tl(cpu_R[r], tn);
+}
+
+static inline void _t_gen_mov_TN_env(TCGv tn, int offset)
+{
+ if (offset > sizeof (CPUState))
+ fprintf(stderr, "wrong load from env from off=%d\n", offset);
+ tcg_gen_ld_tl(tn, cpu_env, offset);
+}
+static inline void _t_gen_mov_env_TN(int offset, TCGv tn)
+{
+ if (offset > sizeof (CPUState))
+ fprintf(stderr, "wrong store to env at off=%d\n", offset);
+ tcg_gen_st_tl(tn, cpu_env, offset);
+}
+
+static inline void t_gen_mov_TN_preg(TCGv tn, int r)
+{
+ if (r < 0 || r > 15)
+ fprintf(stderr, "wrong register read $p%d\n", r);
+ if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
+ tcg_gen_mov_tl(tn, tcg_const_tl(0));
+ else if (r == PR_VR)
+ tcg_gen_mov_tl(tn, tcg_const_tl(32));
+ else if (r == PR_EDA) {
+ printf("read from EDA!\n");
+ tcg_gen_mov_tl(tn, cpu_PR[r]);
+ }
+ else
+ tcg_gen_mov_tl(tn, cpu_PR[r]);
+}
+static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn)
+{
+ if (r < 0 || r > 15)
+ fprintf(stderr, "wrong register write $p%d\n", r);
+ if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
+ return;
+ else if (r == PR_SRS)
+ tcg_gen_andi_tl(cpu_PR[r], tn, 3);
+ else {
+ if (r == PR_PID)
+ gen_helper_tlb_flush_pid(tn);
+ if (dc->tb_flags & S_FLAG && r == PR_SPC)
+ gen_helper_spc_write(tn);
+ else if (r == PR_CCS)
+ dc->cpustate_changed = 1;
+ tcg_gen_mov_tl(cpu_PR[r], tn);
+ }
+}
+
+static inline void t_gen_raise_exception(uint32_t index)
+{
+ TCGv_i32 tmp = tcg_const_i32(index);
+ gen_helper_raise_exception(tmp);
+ tcg_temp_free_i32(tmp);
+}
+
+static void t_gen_lsl(TCGv d, TCGv a, TCGv b)
+{
+ TCGv t0, t_31;
+
+ t0 = tcg_temp_new();
+ t_31 = tcg_const_tl(31);
+ tcg_gen_shl_tl(d, a, b);
+
+ tcg_gen_sub_tl(t0, t_31, b);
+ tcg_gen_sar_tl(t0, t0, t_31);
+ tcg_gen_and_tl(t0, t0, d);
+ tcg_gen_xor_tl(d, d, t0);
+ tcg_temp_free(t0);
+ tcg_temp_free(t_31);
+}
+
+static void t_gen_lsr(TCGv d, TCGv a, TCGv b)
+{
+ TCGv t0, t_31;
+
+ t0 = tcg_temp_new();
+ t_31 = tcg_temp_new();
+ tcg_gen_shr_tl(d, a, b);
+
+ tcg_gen_movi_tl(t_31, 31);
+ tcg_gen_sub_tl(t0, t_31, b);
+ tcg_gen_sar_tl(t0, t0, t_31);
+ tcg_gen_and_tl(t0, t0, d);
+ tcg_gen_xor_tl(d, d, t0);
+ tcg_temp_free(t0);
+ tcg_temp_free(t_31);
+}
+
+static void t_gen_asr(TCGv d, TCGv a, TCGv b)
+{
+ TCGv t0, t_31;
+
+ t0 = tcg_temp_new();
+ t_31 = tcg_temp_new();
+ tcg_gen_sar_tl(d, a, b);
+
+ tcg_gen_movi_tl(t_31, 31);
+ tcg_gen_sub_tl(t0, t_31, b);
+ tcg_gen_sar_tl(t0, t0, t_31);
+ tcg_gen_or_tl(d, d, t0);
+ tcg_temp_free(t0);
+ tcg_temp_free(t_31);
+}
+
+/* 64-bit signed mul, lower result in d and upper in d2. */
+static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b)
+{
+ TCGv_i64 t0, t1;
+
+ t0 = tcg_temp_new_i64();
+ t1 = tcg_temp_new_i64();
+
+ tcg_gen_ext_i32_i64(t0, a);
+ tcg_gen_ext_i32_i64(t1, b);
+ tcg_gen_mul_i64(t0, t0, t1);
+
+ tcg_gen_trunc_i64_i32(d, t0);
+ tcg_gen_shri_i64(t0, t0, 32);
+ tcg_gen_trunc_i64_i32(d2, t0);
+
+ tcg_temp_free_i64(t0);
+ tcg_temp_free_i64(t1);
+}
+
+/* 64-bit unsigned muls, lower result in d and upper in d2. */
+static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b)
+{
+ TCGv_i64 t0, t1;
+
+ t0 = tcg_temp_new_i64();
+ t1 = tcg_temp_new_i64();
+
+ tcg_gen_extu_i32_i64(t0, a);
+ tcg_gen_extu_i32_i64(t1, b);
+ tcg_gen_mul_i64(t0, t0, t1);
+
+ tcg_gen_trunc_i64_i32(d, t0);
+ tcg_gen_shri_i64(t0, t0, 32);
+ tcg_gen_trunc_i64_i32(d2, t0);
+
+ tcg_temp_free_i64(t0);
+ tcg_temp_free_i64(t1);
+}
+
+/* 32bit branch-free binary search for counting leading zeros. */
+static void t_gen_lz_i32(TCGv d, TCGv x)
+{
+ TCGv_i32 y, m, n;
+
+ y = tcg_temp_new_i32();
+ m = tcg_temp_new_i32();
+ n = tcg_temp_new_i32();
+
+ /* y = -(x >> 16) */
+ tcg_gen_shri_i32(y, x, 16);
+ tcg_gen_neg_i32(y, y);
+
+ /* m = (y >> 16) & 16 */
+ tcg_gen_sari_i32(m, y, 16);
+ tcg_gen_andi_i32(m, m, 16);
+
+ /* n = 16 - m */
+ tcg_gen_sub_i32(n, tcg_const_i32(16), m);
+ /* x = x >> m */
+ tcg_gen_shr_i32(x, x, m);
+
+ /* y = x - 0x100 */
+ tcg_gen_subi_i32(y, x, 0x100);
+ /* m = (y >> 16) & 8 */
+ tcg_gen_sari_i32(m, y, 16);
+ tcg_gen_andi_i32(m, m, 8);
+ /* n = n + m */
+ tcg_gen_add_i32(n, n, m);
+ /* x = x << m */
+ tcg_gen_shl_i32(x, x, m);
+
+ /* y = x - 0x1000 */
+ tcg_gen_subi_i32(y, x, 0x1000);
+ /* m = (y >> 16) & 4 */
+ tcg_gen_sari_i32(m, y, 16);
+ tcg_gen_andi_i32(m, m, 4);
+ /* n = n + m */
+ tcg_gen_add_i32(n, n, m);
+ /* x = x << m */
+ tcg_gen_shl_i32(x, x, m);
+
+ /* y = x - 0x4000 */
+ tcg_gen_subi_i32(y, x, 0x4000);
+ /* m = (y >> 16) & 2 */
+ tcg_gen_sari_i32(m, y, 16);
+ tcg_gen_andi_i32(m, m, 2);
+ /* n = n + m */
+ tcg_gen_add_i32(n, n, m);
+ /* x = x << m */
+ tcg_gen_shl_i32(x, x, m);
+
+ /* y = x >> 14 */
+ tcg_gen_shri_i32(y, x, 14);
+ /* m = y & ~(y >> 1) */
+ tcg_gen_sari_i32(m, y, 1);
+ tcg_gen_not_i32(m, m);
+ tcg_gen_and_i32(m, m, y);
+
+ /* d = n + 2 - m */
+ tcg_gen_addi_i32(d, n, 2);
+ tcg_gen_sub_i32(d, d, m);
+
+ tcg_temp_free(y);
+ tcg_temp_free(m);
+ tcg_temp_free(n);
+}
+
+static void t_gen_btst(TCGv d, TCGv a, TCGv b)
+{
+ TCGv sbit;
+ TCGv bset;
+ TCGv t0;
+ int l1;
+
+ /* des ref:
+ The N flag is set according to the selected bit in the dest reg.
+ The Z flag is set if the selected bit and all bits to the right are
+ zero.
+ The X flag is cleared.
+ Other flags are left untouched.
+ The destination reg is not affected.
+
+ unsigned int fz, sbit, bset, mask, masked_t0;
+
+ sbit = T1 & 31;
+ bset = !!(T0 & (1 << sbit));
+ mask = sbit == 31 ? -1 : (1 << (sbit + 1)) - 1;
+ masked_t0 = T0 & mask;
+ fz = !(masked_t0 | bset);
+
+ // Clear the X, N and Z flags.
+ T0 = env->pregs[PR_CCS] & ~(X_FLAG | N_FLAG | Z_FLAG);
+ // Set the N and Z flags accordingly.
+ T0 |= (bset << 3) | (fz << 2);
+ */
+
+ l1 = gen_new_label();
+ sbit = tcg_temp_new();
+ bset = tcg_temp_new();
+ t0 = tcg_temp_new();
+
+ /* Compute bset and sbit. */
+ tcg_gen_andi_tl(sbit, b, 31);
+ tcg_gen_shl_tl(t0, tcg_const_tl(1), sbit);
+ tcg_gen_and_tl(bset, a, t0);
+ tcg_gen_shr_tl(bset, bset, sbit);
+ /* Displace to N_FLAG. */
+ tcg_gen_shli_tl(bset, bset, 3);
+
+ tcg_gen_shl_tl(sbit, tcg_const_tl(2), sbit);
+ tcg_gen_subi_tl(sbit, sbit, 1);
+ tcg_gen_and_tl(sbit, a, sbit);
+
+ tcg_gen_andi_tl(d, cpu_PR[PR_CCS], ~(X_FLAG | N_FLAG | Z_FLAG));
+ /* or in the N_FLAG. */
+ tcg_gen_or_tl(d, d, bset);
+ tcg_gen_brcondi_tl(TCG_COND_NE, sbit, 0, l1);
+ /* or in the Z_FLAG. */
+ tcg_gen_ori_tl(d, d, Z_FLAG);
+ gen_set_label(l1);
+
+ tcg_temp_free(sbit);
+ tcg_temp_free(bset);
+}
+
+static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b)
+{
+ int l1;
+
+ l1 = gen_new_label();
+
+ /*
+ * d <<= 1
+ * if (d >= s)
+ * d -= s;
+ */
+ tcg_gen_shli_tl(d, a, 1);
+ tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1);
+ tcg_gen_sub_tl(d, d, b);
+ gen_set_label(l1);
+}
+
+/* Extended arithmetics on CRIS. */
+static inline void t_gen_add_flag(TCGv d, int flag)
+{
+ TCGv c;
+
+ c = tcg_temp_new();
+ t_gen_mov_TN_preg(c, PR_CCS);
+ /* Propagate carry into d. */
+ tcg_gen_andi_tl(c, c, 1 << flag);
+ if (flag)
+ tcg_gen_shri_tl(c, c, flag);
+ tcg_gen_add_tl(d, d, c);
+ tcg_temp_free(c);
+}
+
+static inline void t_gen_addx_carry(DisasContext *dc, TCGv d)
+{
+ if (dc->flagx_known) {
+ if (dc->flags_x) {
+ TCGv c;
+
+ c = tcg_temp_new();
+ t_gen_mov_TN_preg(c, PR_CCS);
+ /* C flag is already at bit 0. */
+ tcg_gen_andi_tl(c, c, C_FLAG);
+ tcg_gen_add_tl(d, d, c);
+ tcg_temp_free(c);
+ }
+ } else {
+ TCGv x, c;
+
+ x = tcg_temp_new();
+ c = tcg_temp_new();
+ t_gen_mov_TN_preg(x, PR_CCS);
+ tcg_gen_mov_tl(c, x);
+
+ /* Propagate carry into d if X is set. Branch free. */
+ tcg_gen_andi_tl(c, c, C_FLAG);
+ tcg_gen_andi_tl(x, x, X_FLAG);
+ tcg_gen_shri_tl(x, x, 4);
+
+ tcg_gen_and_tl(x, x, c);
+ tcg_gen_add_tl(d, d, x);
+ tcg_temp_free(x);
+ tcg_temp_free(c);
+ }
+}
+
+static inline void t_gen_subx_carry(DisasContext *dc, TCGv d)
+{
+ if (dc->flagx_known) {
+ if (dc->flags_x) {
+ TCGv c;
+
+ c = tcg_temp_new();
+ t_gen_mov_TN_preg(c, PR_CCS);
+ /* C flag is already at bit 0. */
+ tcg_gen_andi_tl(c, c, C_FLAG);
+ tcg_gen_sub_tl(d, d, c);
+ tcg_temp_free(c);
+ }
+ } else {
+ TCGv x, c;
+
+ x = tcg_temp_new();
+ c = tcg_temp_new();
+ t_gen_mov_TN_preg(x, PR_CCS);
+ tcg_gen_mov_tl(c, x);
+
+ /* Propagate carry into d if X is set. Branch free. */
+ tcg_gen_andi_tl(c, c, C_FLAG);
+ tcg_gen_andi_tl(x, x, X_FLAG);
+ tcg_gen_shri_tl(x, x, 4);
+
+ tcg_gen_and_tl(x, x, c);
+ tcg_gen_sub_tl(d, d, x);
+ tcg_temp_free(x);
+ tcg_temp_free(c);
+ }
+}
+
+/* Swap the two bytes within each half word of the s operand.
+ T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
+static inline void t_gen_swapb(TCGv d, TCGv s)
+{
+ TCGv t, org_s;
+
+ t = tcg_temp_new();
+ org_s = tcg_temp_new();
+
+ /* d and s may refer to the same object. */
+ tcg_gen_mov_tl(org_s, s);
+ tcg_gen_shli_tl(t, org_s, 8);
+ tcg_gen_andi_tl(d, t, 0xff00ff00);
+ tcg_gen_shri_tl(t, org_s, 8);
+ tcg_gen_andi_tl(t, t, 0x00ff00ff);
+ tcg_gen_or_tl(d, d, t);
+ tcg_temp_free(t);
+ tcg_temp_free(org_s);
+}
+
+/* Swap the halfwords of the s operand. */
+static inline void t_gen_swapw(TCGv d, TCGv s)
+{
+ TCGv t;
+ /* d and s refer the same object. */
+ t = tcg_temp_new();
+ tcg_gen_mov_tl(t, s);
+ tcg_gen_shli_tl(d, t, 16);
+ tcg_gen_shri_tl(t, t, 16);
+ tcg_gen_or_tl(d, d, t);
+ tcg_temp_free(t);
+}
+
+/* Reverse the within each byte.
+ T0 = (((T0 << 7) & 0x80808080) |
+ ((T0 << 5) & 0x40404040) |
+ ((T0 << 3) & 0x20202020) |
+ ((T0 << 1) & 0x10101010) |
+ ((T0 >> 1) & 0x08080808) |
+ ((T0 >> 3) & 0x04040404) |
+ ((T0 >> 5) & 0x02020202) |
+ ((T0 >> 7) & 0x01010101));
+ */
+static inline void t_gen_swapr(TCGv d, TCGv s)
+{
+ struct {
+ int shift; /* LSL when positive, LSR when negative. */
+ uint32_t mask;
+ } bitrev [] = {
+ {7, 0x80808080},
+ {5, 0x40404040},
+ {3, 0x20202020},
+ {1, 0x10101010},
+ {-1, 0x08080808},
+ {-3, 0x04040404},
+ {-5, 0x02020202},
+ {-7, 0x01010101}
+ };
+ int i;
+ TCGv t, org_s;
+
+ /* d and s refer the same object. */
+ t = tcg_temp_new();
+ org_s = tcg_temp_new();
+ tcg_gen_mov_tl(org_s, s);
+
+ tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
+ tcg_gen_andi_tl(d, t, bitrev[0].mask);
+ for (i = 1; i < ARRAY_SIZE(bitrev); i++) {
+ if (bitrev[i].shift >= 0) {
+ tcg_gen_shli_tl(t, org_s, bitrev[i].shift);
+ } else {
+ tcg_gen_shri_tl(t, org_s, -bitrev[i].shift);
+ }
+ tcg_gen_andi_tl(t, t, bitrev[i].mask);
+ tcg_gen_or_tl(d, d, t);
+ }
+ tcg_temp_free(t);
+ tcg_temp_free(org_s);
+}
+
+static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false)
+{
+ TCGv btaken;
+ int l1;
+
+ l1 = gen_new_label();
+ btaken = tcg_temp_new();
+
+ /* Conditional jmp. */
+ tcg_gen_mov_tl(btaken, env_btaken);
+ tcg_gen_mov_tl(env_pc, pc_false);
+ tcg_gen_brcondi_tl(TCG_COND_EQ, btaken, 0, l1);
+ tcg_gen_mov_tl(env_pc, pc_true);
+ gen_set_label(l1);
+
+ tcg_temp_free(btaken);
+}
+
+static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
+{
+ TranslationBlock *tb;
+ tb = dc->tb;
+ if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
+ tcg_gen_goto_tb(n);
+ tcg_gen_movi_tl(env_pc, dest);
+ tcg_gen_exit_tb((long)tb + n);
+ } else {
+ tcg_gen_movi_tl(env_pc, dest);
+ tcg_gen_exit_tb(0);
+ }
+}
+
+/* Sign extend at translation time. */
+static int sign_extend(unsigned int val, unsigned int width)
+{
+ int sval;
+
+ /* LSL. */
+ val <<= 31 - width;
+ sval = val;
+ /* ASR. */
+ sval >>= 31 - width;
+ return sval;
+}
+
+static inline void cris_clear_x_flag(DisasContext *dc)
+{
+ if (dc->flagx_known && dc->flags_x)
+ dc->flags_uptodate = 0;
+
+ dc->flagx_known = 1;
+ dc->flags_x = 0;
+}
+
+static void cris_flush_cc_state(DisasContext *dc)
+{
+ if (dc->cc_size_uptodate != dc->cc_size) {
+ tcg_gen_movi_tl(cc_size, dc->cc_size);
+ dc->cc_size_uptodate = dc->cc_size;
+ }
+ tcg_gen_movi_tl(cc_op, dc->cc_op);
+ tcg_gen_movi_tl(cc_mask, dc->cc_mask);
+}
+
+static void cris_evaluate_flags(DisasContext *dc)
+{
+ if (!dc->flags_uptodate) {
+ cris_flush_cc_state(dc);
+
+ switch (dc->cc_op)
+ {
+ case CC_OP_MCP:
+ gen_helper_evaluate_flags_mcp();
+ break;
+ case CC_OP_MULS:
+ gen_helper_evaluate_flags_muls();
+ break;
+ case CC_OP_MULU:
+ gen_helper_evaluate_flags_mulu();
+ break;
+ case CC_OP_MOVE:
+ case CC_OP_AND:
+ case CC_OP_OR:
+ case CC_OP_XOR:
+ case CC_OP_ASR:
+ case CC_OP_LSR:
+ case CC_OP_LSL:
+ switch (dc->cc_size)
+ {
+ case 4:
+ gen_helper_evaluate_flags_move_4();
+ break;
+ case 2:
+ gen_helper_evaluate_flags_move_2();
+ break;
+ default:
+ gen_helper_evaluate_flags();
+ break;
+ }
+ break;
+ case CC_OP_FLAGS:
+ /* live. */
+ break;
+ default:
+ {
+ switch (dc->cc_size)
+ {
+ case 4:
+ gen_helper_evaluate_flags_alu_4();
+ break;
+ default:
+ gen_helper_evaluate_flags();
+ break;
+ }
+ }
+ break;
+ }
+ if (dc->flagx_known) {
+ if (dc->flags_x)
+ tcg_gen_ori_tl(cpu_PR[PR_CCS],
+ cpu_PR[PR_CCS], X_FLAG);
+ else
+ tcg_gen_andi_tl(cpu_PR[PR_CCS],
+ cpu_PR[PR_CCS], ~X_FLAG);
+ }
+
+ dc->flags_uptodate = 1;
+ }
+}
+
+static void cris_cc_mask(DisasContext *dc, unsigned int mask)
+{
+ uint32_t ovl;
+
+ if (!mask) {
+ dc->update_cc = 0;
+ return;
+ }
+
+ /* Check if we need to evaluate the condition codes due to
+ CC overlaying. */
+ ovl = (dc->cc_mask ^ mask) & ~mask;
+ if (ovl) {
+ /* TODO: optimize this case. It trigs all the time. */
+ cris_evaluate_flags (dc);
+ }
+ dc->cc_mask = mask;
+ dc->update_cc = 1;
+}
+
+static void cris_update_cc_op(DisasContext *dc, int op, int size)
+{
+ dc->cc_op = op;
+ dc->cc_size = size;
+ dc->flags_uptodate = 0;
+}
+
+static inline void cris_update_cc_x(DisasContext *dc)
+{
+ /* Save the x flag state at the time of the cc snapshot. */
+ if (dc->flagx_known) {
+ if (dc->cc_x_uptodate == (2 | dc->flags_x))
+ return;
+ tcg_gen_movi_tl(cc_x, dc->flags_x);
+ dc->cc_x_uptodate = 2 | dc->flags_x;
+ }
+ else {
+ tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG);
+ dc->cc_x_uptodate = 1;
+ }
+}
+
+/* Update cc prior to executing ALU op. Needs source operands untouched. */
+static void cris_pre_alu_update_cc(DisasContext *dc, int op,
+ TCGv dst, TCGv src, int size)
+{
+ if (dc->update_cc) {
+ cris_update_cc_op(dc, op, size);
+ tcg_gen_mov_tl(cc_src, src);
+
+ if (op != CC_OP_MOVE
+ && op != CC_OP_AND
+ && op != CC_OP_OR
+ && op != CC_OP_XOR
+ && op != CC_OP_ASR
+ && op != CC_OP_LSR
+ && op != CC_OP_LSL)
+ tcg_gen_mov_tl(cc_dest, dst);
+
+ cris_update_cc_x(dc);
+ }
+}
+
+/* Update cc after executing ALU op. needs the result. */
+static inline void cris_update_result(DisasContext *dc, TCGv res)
+{
+ if (dc->update_cc) {
+ if (dc->cc_size == 4 &&
+ (dc->cc_op == CC_OP_SUB
+ || dc->cc_op == CC_OP_ADD))
+ return;
+ tcg_gen_mov_tl(cc_result, res);
+ }
+}
+
+/* Returns one if the write back stage should execute. */
+static void cris_alu_op_exec(DisasContext *dc, int op,
+ TCGv dst, TCGv a, TCGv b, int size)
+{
+ /* Emit the ALU insns. */
+ switch (op)
+ {
+ case CC_OP_ADD:
+ tcg_gen_add_tl(dst, a, b);
+ /* Extended arithmetics. */
+ t_gen_addx_carry(dc, dst);
+ break;
+ case CC_OP_ADDC:
+ tcg_gen_add_tl(dst, a, b);
+ t_gen_add_flag(dst, 0); /* C_FLAG. */
+ break;
+ case CC_OP_MCP:
+ tcg_gen_add_tl(dst, a, b);
+ t_gen_add_flag(dst, 8); /* R_FLAG. */
+ break;
+ case CC_OP_SUB:
+ tcg_gen_sub_tl(dst, a, b);
+ /* Extended arithmetics. */
+ t_gen_subx_carry(dc, dst);
+ break;
+ case CC_OP_MOVE:
+ tcg_gen_mov_tl(dst, b);
+ break;
+ case CC_OP_OR:
+ tcg_gen_or_tl(dst, a, b);
+ break;
+ case CC_OP_AND:
+ tcg_gen_and_tl(dst, a, b);
+ break;
+ case CC_OP_XOR:
+ tcg_gen_xor_tl(dst, a, b);
+ break;
+ case CC_OP_LSL:
+ t_gen_lsl(dst, a, b);
+ break;
+ case CC_OP_LSR:
+ t_gen_lsr(dst, a, b);
+ break;
+ case CC_OP_ASR:
+ t_gen_asr(dst, a, b);
+ break;
+ case CC_OP_NEG:
+ tcg_gen_neg_tl(dst, b);
+ /* Extended arithmetics. */
+ t_gen_subx_carry(dc, dst);
+ break;
+ case CC_OP_LZ:
+ t_gen_lz_i32(dst, b);
+ break;
+ case CC_OP_BTST:
+ t_gen_btst(dst, a, b);
+ break;
+ case CC_OP_MULS:
+ t_gen_muls(dst, cpu_PR[PR_MOF], a, b);
+ break;
+ case CC_OP_MULU:
+ t_gen_mulu(dst, cpu_PR[PR_MOF], a, b);
+ break;
+ case CC_OP_DSTEP:
+ t_gen_cris_dstep(dst, a, b);
+ break;
+ case CC_OP_BOUND:
+ {
+ int l1;
+ l1 = gen_new_label();
+ tcg_gen_mov_tl(dst, a);
+ tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1);
+ tcg_gen_mov_tl(dst, b);
+ gen_set_label(l1);
+ }
+ break;
+ case CC_OP_CMP:
+ tcg_gen_sub_tl(dst, a, b);
+ /* Extended arithmetics. */
+ t_gen_subx_carry(dc, dst);
+ break;
+ default:
+ fprintf (logfile, "illegal ALU op.\n");
+ BUG();
+ break;
+ }
+
+ if (size == 1)
+ tcg_gen_andi_tl(dst, dst, 0xff);
+ else if (size == 2)
+ tcg_gen_andi_tl(dst, dst, 0xffff);
+}
+
+static void cris_alu(DisasContext *dc, int op,
+ TCGv d, TCGv op_a, TCGv op_b, int size)
+{
+ TCGv tmp;
+ int writeback;
+
+ writeback = 1;
+
+ if (op == CC_OP_BOUND || op == CC_OP_BTST)
+ tmp = tcg_temp_local_new();
+
+ if (op == CC_OP_CMP) {
+ tmp = tcg_temp_new();
+ writeback = 0;
+ } else if (size == 4) {
+ tmp = d;
+ writeback = 0;
+ } else
+ tmp = tcg_temp_new();
+
+
+ cris_pre_alu_update_cc(dc, op, op_a, op_b, size);
+ cris_alu_op_exec(dc, op, tmp, op_a, op_b, size);
+ cris_update_result(dc, tmp);
+
+ /* Writeback. */
+ if (writeback) {
+ if (size == 1)
+ tcg_gen_andi_tl(d, d, ~0xff);
+ else
+ tcg_gen_andi_tl(d, d, ~0xffff);
+ tcg_gen_or_tl(d, d, tmp);
+ }
+ if (!TCGV_EQUAL(tmp, d))
+ tcg_temp_free(tmp);
+}
+
+static int arith_cc(DisasContext *dc)
+{
+ if (dc->update_cc) {
+ switch (dc->cc_op) {
+ case CC_OP_ADDC: return 1;
+ case CC_OP_ADD: return 1;
+ case CC_OP_SUB: return 1;
+ case CC_OP_DSTEP: return 1;
+ case CC_OP_LSL: return 1;
+ case CC_OP_LSR: return 1;
+ case CC_OP_ASR: return 1;
+ case CC_OP_CMP: return 1;
+ case CC_OP_NEG: return 1;
+ case CC_OP_OR: return 1;
+ case CC_OP_XOR: return 1;
+ case CC_OP_MULU: return 1;
+ case CC_OP_MULS: return 1;
+ default:
+ return 0;
+ }
+ }
+ return 0;
+}
+
+static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
+{
+ int arith_opt, move_opt;
+
+ /* TODO: optimize more condition codes. */
+
+ /*
+ * If the flags are live, we've gotta look into the bits of CCS.
+ * Otherwise, if we just did an arithmetic operation we try to
+ * evaluate the condition code faster.
+ *
+ * When this function is done, T0 should be non-zero if the condition
+ * code is true.
+ */
+ arith_opt = arith_cc(dc) && !dc->flags_uptodate;
+ move_opt = (dc->cc_op == CC_OP_MOVE) && dc->flags_uptodate;
+ switch (cond) {
+ case CC_EQ:
+ if (arith_opt || move_opt) {
+ /* If cc_result is zero, T0 should be
+ non-zero otherwise T0 should be zero. */
+ int l1;
+ l1 = gen_new_label();
+ tcg_gen_movi_tl(cc, 0);
+ tcg_gen_brcondi_tl(TCG_COND_NE, cc_result,
+ 0, l1);
+ tcg_gen_movi_tl(cc, 1);
+ gen_set_label(l1);
+ }
+ else {
+ cris_evaluate_flags(dc);
+ tcg_gen_andi_tl(cc,
+ cpu_PR[PR_CCS], Z_FLAG);
+ }
+ break;
+ case CC_NE:
+ if (arith_opt || move_opt)
+ tcg_gen_mov_tl(cc, cc_result);
+ else {
+ cris_evaluate_flags(dc);
+ tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
+ Z_FLAG);
+ tcg_gen_andi_tl(cc, cc, Z_FLAG);
+ }
+ break;
+ case CC_CS:
+ cris_evaluate_flags(dc);
+ tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
+ break;
+ case CC_CC:
+ cris_evaluate_flags(dc);
+ tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
+ tcg_gen_andi_tl(cc, cc, C_FLAG);
+ break;
+ case CC_VS:
+ cris_evaluate_flags(dc);
+ tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
+ break;
+ case CC_VC:
+ cris_evaluate_flags(dc);
+ tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
+ V_FLAG);
+ tcg_gen_andi_tl(cc, cc, V_FLAG);
+ break;
+ case CC_PL:
+ if (arith_opt || move_opt) {
+ int bits = 31;
+
+ if (dc->cc_size == 1)
+ bits = 7;
+ else if (dc->cc_size == 2)
+ bits = 15;
+
+ tcg_gen_shri_tl(cc, cc_result, bits);
+ tcg_gen_xori_tl(cc, cc, 1);
+ } else {
+ cris_evaluate_flags(dc);
+ tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
+ N_FLAG);
+ tcg_gen_andi_tl(cc, cc, N_FLAG);
+ }
+ break;
+ case CC_MI:
+ if (arith_opt || move_opt) {
+ int bits = 31;
+
+ if (dc->cc_size == 1)
+ bits = 7;
+ else if (dc->cc_size == 2)
+ bits = 15;
+
+ tcg_gen_shri_tl(cc, cc_result, 31);
+ }
+ else {
+ cris_evaluate_flags(dc);
+ tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
+ N_FLAG);
+ }
+ break;
+ case CC_LS:
+ cris_evaluate_flags(dc);
+ tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
+ C_FLAG | Z_FLAG);
+ break;
+ case CC_HI:
+ cris_evaluate_flags(dc);
+ {
+ TCGv tmp;
+
+ tmp = tcg_temp_new();
+ tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
+ C_FLAG | Z_FLAG);
+ /* Overlay the C flag on top of the Z. */
+ tcg_gen_shli_tl(cc, tmp, 2);
+ tcg_gen_and_tl(cc, tmp, cc);
+ tcg_gen_andi_tl(cc, cc, Z_FLAG);
+
+ tcg_temp_free(tmp);
+ }
+ break;
+ case CC_GE:
+ cris_evaluate_flags(dc);
+ /* Overlay the V flag on top of the N. */
+ tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
+ tcg_gen_xor_tl(cc,
+ cpu_PR[PR_CCS], cc);
+ tcg_gen_andi_tl(cc, cc, N_FLAG);
+ tcg_gen_xori_tl(cc, cc, N_FLAG);
+ break;
+ case CC_LT:
+ cris_evaluate_flags(dc);
+ /* Overlay the V flag on top of the N. */
+ tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
+ tcg_gen_xor_tl(cc,
+ cpu_PR[PR_CCS], cc);
+ tcg_gen_andi_tl(cc, cc, N_FLAG);
+ break;
+ case CC_GT:
+ cris_evaluate_flags(dc);
+ {
+ TCGv n, z;
+
+ n = tcg_temp_new();
+ z = tcg_temp_new();
+
+ /* To avoid a shift we overlay everything on
+ the V flag. */
+ tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
+ tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
+ /* invert Z. */
+ tcg_gen_xori_tl(z, z, 2);
+
+ tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
+ tcg_gen_xori_tl(n, n, 2);
+ tcg_gen_and_tl(cc, z, n);
+ tcg_gen_andi_tl(cc, cc, 2);
+
+ tcg_temp_free(n);
+ tcg_temp_free(z);
+ }
+ break;
+ case CC_LE:
+ cris_evaluate_flags(dc);
+ {
+ TCGv n, z;
+
+ n = tcg_temp_new();
+ z = tcg_temp_new();
+
+ /* To avoid a shift we overlay everything on
+ the V flag. */
+ tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
+ tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
+
+ tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
+ tcg_gen_or_tl(cc, z, n);
+ tcg_gen_andi_tl(cc, cc, 2);
+
+ tcg_temp_free(n);
+ tcg_temp_free(z);
+ }
+ break;
+ case CC_P:
+ cris_evaluate_flags(dc);
+ tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
+ break;
+ case CC_A:
+ tcg_gen_movi_tl(cc, 1);
+ break;
+ default:
+ BUG();
+ break;
+ };
+}
+
+static void cris_store_direct_jmp(DisasContext *dc)
+{
+ /* Store the direct jmp state into the cpu-state. */
+ if (dc->jmp == JMP_DIRECT) {
+ tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
+ tcg_gen_movi_tl(env_btaken, 1);
+ }
+}
+
+static void cris_prepare_cc_branch (DisasContext *dc,
+ int offset, int cond)
+{
+ /* This helps us re-schedule the micro-code to insns in delay-slots
+ before the actual jump. */
+ dc->delayed_branch = 2;
+ dc->jmp_pc = dc->pc + offset;
+
+ if (cond != CC_A)
+ {
+ dc->jmp = JMP_INDIRECT;
+ gen_tst_cc (dc, env_btaken, cond);
+ tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
+ } else {
+ /* Allow chaining. */
+ dc->jmp = JMP_DIRECT;
+ }
+}
+
+
+/* jumps, when the dest is in a live reg for example. Direct should be set
+ when the dest addr is constant to allow tb chaining. */
+static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type)
+{
+ /* This helps us re-schedule the micro-code to insns in delay-slots
+ before the actual jump. */
+ dc->delayed_branch = 2;
+ dc->jmp = type;
+ if (type == JMP_INDIRECT)
+ tcg_gen_movi_tl(env_btaken, 1);
+}
+
+static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr)
+{
+ int mem_index = cpu_mmu_index(dc->env);
+
+ /* If we get a fault on a delayslot we must keep the jmp state in
+ the cpu-state to be able to re-execute the jmp. */
+ if (dc->delayed_branch == 1)
+ cris_store_direct_jmp(dc);
+
+ tcg_gen_qemu_ld64(dst, addr, mem_index);
+}
+
+static void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
+ unsigned int size, int sign)
+{
+ int mem_index = cpu_mmu_index(dc->env);
+
+ /* If we get a fault on a delayslot we must keep the jmp state in
+ the cpu-state to be able to re-execute the jmp. */
+ if (dc->delayed_branch == 1)
+ cris_store_direct_jmp(dc);
+
+ if (size == 1) {
+ if (sign)
+ tcg_gen_qemu_ld8s(dst, addr, mem_index);
+ else
+ tcg_gen_qemu_ld8u(dst, addr, mem_index);
+ }
+ else if (size == 2) {
+ if (sign)
+ tcg_gen_qemu_ld16s(dst, addr, mem_index);
+ else
+ tcg_gen_qemu_ld16u(dst, addr, mem_index);
+ }
+ else if (size == 4) {
+ tcg_gen_qemu_ld32u(dst, addr, mem_index);
+ }
+ else {
+ abort();
+ }
+}
+
+static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
+ unsigned int size)
+{
+ int mem_index = cpu_mmu_index(dc->env);
+
+ /* If we get a fault on a delayslot we must keep the jmp state in
+ the cpu-state to be able to re-execute the jmp. */
+ if (dc->delayed_branch == 1)
+ cris_store_direct_jmp(dc);
+
+
+ /* Conditional writes. We only support the kind were X and P are known
+ at translation time. */
+ if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
+ dc->postinc = 0;
+ cris_evaluate_flags(dc);
+ tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
+ return;
+ }
+
+ if (size == 1)
+ tcg_gen_qemu_st8(val, addr, mem_index);
+ else if (size == 2)
+ tcg_gen_qemu_st16(val, addr, mem_index);
+ else
+ tcg_gen_qemu_st32(val, addr, mem_index);
+
+ if (dc->flagx_known && dc->flags_x) {
+ cris_evaluate_flags(dc);
+ tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
+ }
+}
+
+static inline void t_gen_sext(TCGv d, TCGv s, int size)
+{
+ if (size == 1)
+ tcg_gen_ext8s_i32(d, s);
+ else if (size == 2)
+ tcg_gen_ext16s_i32(d, s);
+ else if(!TCGV_EQUAL(d, s))
+ tcg_gen_mov_tl(d, s);
+}
+
+static inline void t_gen_zext(TCGv d, TCGv s, int size)
+{
+ if (size == 1)
+ tcg_gen_ext8u_i32(d, s);
+ else if (size == 2)
+ tcg_gen_ext16u_i32(d, s);
+ else if (!TCGV_EQUAL(d, s))
+ tcg_gen_mov_tl(d, s);
+}
+
+#if DISAS_CRIS
+static char memsize_char(int size)
+{
+ switch (size)
+ {
+ case 1: return 'b'; break;
+ case 2: return 'w'; break;
+ case 4: return 'd'; break;
+ default:
+ return 'x';
+ break;
+ }
+}
+#endif
+
+static inline unsigned int memsize_z(DisasContext *dc)
+{
+ return dc->zsize + 1;
+}
+
+static inline unsigned int memsize_zz(DisasContext *dc)
+{
+ switch (dc->zzsize)
+ {
+ case 0: return 1;
+ case 1: return 2;
+ default:
+ return 4;
+ }
+}
+
+static inline void do_postinc (DisasContext *dc, int size)
+{
+ if (dc->postinc)
+ tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
+}
+
+static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
+ int size, int s_ext, TCGv dst)
+{
+ if (s_ext)
+ t_gen_sext(dst, cpu_R[rs], size);
+ else
+ t_gen_zext(dst, cpu_R[rs], size);
+}
+
+/* Prepare T0 and T1 for a register alu operation.
+ s_ext decides if the operand1 should be sign-extended or zero-extended when
+ needed. */
+static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
+ int size, int s_ext, TCGv dst, TCGv src)
+{
+ dec_prep_move_r(dc, rs, rd, size, s_ext, src);
+
+ if (s_ext)
+ t_gen_sext(dst, cpu_R[rd], size);
+ else
+ t_gen_zext(dst, cpu_R[rd], size);
+}
+
+static int dec_prep_move_m(DisasContext *dc, int s_ext, int memsize,
+ TCGv dst)
+{
+ unsigned int rs, rd;
+ uint32_t imm;
+ int is_imm;
+ int insn_len = 2;
+
+ rs = dc->op1;
+ rd = dc->op2;
+ is_imm = rs == 15 && dc->postinc;
+
+ /* Load [$rs] onto T1. */
+ if (is_imm) {
+ insn_len = 2 + memsize;
+ if (memsize == 1)
+ insn_len++;
+
+ if (memsize != 4) {
+ if (s_ext) {
+ if (memsize == 1)
+ imm = ldsb_code(dc->pc + 2);
+ else
+ imm = ldsw_code(dc->pc + 2);
+ } else {
+ if (memsize == 1)
+ imm = ldub_code(dc->pc + 2);
+ else
+ imm = lduw_code(dc->pc + 2);
+ }
+ } else
+ imm = ldl_code(dc->pc + 2);
+
+ tcg_gen_movi_tl(dst, imm);
+ dc->postinc = 0;
+ } else {
+ cris_flush_cc_state(dc);
+ gen_load(dc, dst, cpu_R[rs], memsize, 0);
+ if (s_ext)
+ t_gen_sext(dst, dst, memsize);
+ else
+ t_gen_zext(dst, dst, memsize);
+ }
+ return insn_len;
+}
+
+/* Prepare T0 and T1 for a memory + alu operation.
+ s_ext decides if the operand1 should be sign-extended or zero-extended when
+ needed. */
+static int dec_prep_alu_m(DisasContext *dc, int s_ext, int memsize,
+ TCGv dst, TCGv src)
+{
+ int insn_len;
+
+ insn_len = dec_prep_move_m(dc, s_ext, memsize, src);
+ tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
+ return insn_len;
+}
+
+#if DISAS_CRIS
+static const char *cc_name(int cc)
+{
+ static const char *cc_names[16] = {
+ "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
+ "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
+ };
+ assert(cc < 16);
+ return cc_names[cc];
+}
+#endif
+
+/* Start of insn decoders. */
+
+static unsigned int dec_bccq(DisasContext *dc)
+{
+ int32_t offset;
+ int sign;
+ uint32_t cond = dc->op2;
+ int tmp;
+
+ offset = EXTRACT_FIELD (dc->ir, 1, 7);
+ sign = EXTRACT_FIELD(dc->ir, 0, 0);
+
+ offset *= 2;
+ offset |= sign << 8;
+ tmp = offset;
+ offset = sign_extend(offset, 8);
+
+ DIS(fprintf (logfile, "b%s %x\n", cc_name(cond), dc->pc + offset));
+
+ /* op2 holds the condition-code. */
+ cris_cc_mask(dc, 0);
+ cris_prepare_cc_branch (dc, offset, cond);
+ return 2;
+}
+static unsigned int dec_addoq(DisasContext *dc)
+{
+ int32_t imm;
+
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
+ imm = sign_extend(dc->op1, 7);
+
+ DIS(fprintf (logfile, "addoq %d, $r%u\n", imm, dc->op2));
+ cris_cc_mask(dc, 0);
+ /* Fetch register operand, */
+ tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
+
+ return 2;
+}
+static unsigned int dec_addq(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "addq %u, $r%u\n", dc->op1, dc->op2));
+
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+
+ cris_alu(dc, CC_OP_ADD,
+ cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
+ return 2;
+}
+static unsigned int dec_moveq(DisasContext *dc)
+{
+ uint32_t imm;
+
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
+ imm = sign_extend(dc->op1, 5);
+ DIS(fprintf (logfile, "moveq %d, $r%u\n", imm, dc->op2));
+
+ tcg_gen_mov_tl(cpu_R[dc->op2], tcg_const_tl(imm));
+ return 2;
+}
+static unsigned int dec_subq(DisasContext *dc)
+{
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
+
+ DIS(fprintf (logfile, "subq %u, $r%u\n", dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_SUB,
+ cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
+ return 2;
+}
+static unsigned int dec_cmpq(DisasContext *dc)
+{
+ uint32_t imm;
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
+ imm = sign_extend(dc->op1, 5);
+
+ DIS(fprintf (logfile, "cmpq %d, $r%d\n", imm, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZVC);
+
+ cris_alu(dc, CC_OP_CMP,
+ cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
+ return 2;
+}
+static unsigned int dec_andq(DisasContext *dc)
+{
+ uint32_t imm;
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
+ imm = sign_extend(dc->op1, 5);
+
+ DIS(fprintf (logfile, "andq %d, $r%d\n", imm, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ cris_alu(dc, CC_OP_AND,
+ cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
+ return 2;
+}
+static unsigned int dec_orq(DisasContext *dc)
+{
+ uint32_t imm;
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
+ imm = sign_extend(dc->op1, 5);
+ DIS(fprintf (logfile, "orq %d, $r%d\n", imm, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ cris_alu(dc, CC_OP_OR,
+ cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
+ return 2;
+}
+static unsigned int dec_btstq(DisasContext *dc)
+{
+ TCGv l0;
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
+ DIS(fprintf (logfile, "btstq %u, $r%d\n", dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ l0 = tcg_temp_local_new();
+ cris_alu(dc, CC_OP_BTST,
+ l0, cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
+ cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+ t_gen_mov_preg_TN(dc, PR_CCS, l0);
+ dc->flags_uptodate = 1;
+ tcg_temp_free(l0);
+ return 2;
+}
+static unsigned int dec_asrq(DisasContext *dc)
+{
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
+ DIS(fprintf (logfile, "asrq %u, $r%d\n", dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2],
+ cpu_R[dc->op2], cpu_R[dc->op2], 4);
+ return 2;
+}
+static unsigned int dec_lslq(DisasContext *dc)
+{
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
+ DIS(fprintf (logfile, "lslq %u, $r%d\n", dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
+
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2],
+ cpu_R[dc->op2], cpu_R[dc->op2], 4);
+ return 2;
+}
+static unsigned int dec_lsrq(DisasContext *dc)
+{
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
+ DIS(fprintf (logfile, "lsrq %u, $r%d\n", dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2],
+ cpu_R[dc->op2], cpu_R[dc->op2], 4);
+ return 2;
+}
+
+static unsigned int dec_move_r(DisasContext *dc)
+{
+ int size = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "move.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ if (size == 4) {
+ dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_update_cc_op(dc, CC_OP_MOVE, 4);
+ cris_update_cc_x(dc);
+ cris_update_result(dc, cpu_R[dc->op2]);
+ }
+ else {
+ TCGv t0;
+
+ t0 = tcg_temp_new();
+ dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2],
+ cpu_R[dc->op2], t0, size);
+ tcg_temp_free(t0);
+ }
+ return 2;
+}
+
+static unsigned int dec_scc_r(DisasContext *dc)
+{
+ int cond = dc->op2;
+
+ DIS(fprintf (logfile, "s%s $r%u\n",
+ cc_name(cond), dc->op1));
+
+ if (cond != CC_A)
+ {
+ int l1;
+
+ gen_tst_cc (dc, cpu_R[dc->op1], cond);
+ l1 = gen_new_label();
+ tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
+ tcg_gen_movi_tl(cpu_R[dc->op1], 1);
+ gen_set_label(l1);
+ }
+ else
+ tcg_gen_movi_tl(cpu_R[dc->op1], 1);
+
+ cris_cc_mask(dc, 0);
+ return 2;
+}
+
+static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
+{
+ if (size == 4) {
+ t[0] = cpu_R[dc->op2];
+ t[1] = cpu_R[dc->op1];
+ } else {
+ t[0] = tcg_temp_new();
+ t[1] = tcg_temp_new();
+ }
+}
+
+static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
+{
+ if (size != 4) {
+ tcg_temp_free(t[0]);
+ tcg_temp_free(t[1]);
+ }
+}
+
+static unsigned int dec_and_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "and.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+ cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_lz_r(DisasContext *dc)
+{
+ TCGv t0;
+ DIS(fprintf (logfile, "lz $r%u, $r%u\n",
+ dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+ t0 = tcg_temp_new();
+ dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
+ cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+static unsigned int dec_lsl_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "lsl.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+ tcg_gen_andi_tl(t[1], t[1], 63);
+ cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_alloc_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_lsr_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "lsr.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+ tcg_gen_andi_tl(t[1], t[1], 63);
+ cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_asr_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "asr.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
+ tcg_gen_andi_tl(t[1], t[1], 63);
+ cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_muls_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "muls.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZV);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
+
+ cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_mulu_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "mulu.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZV);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+
+ cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
+ cris_alu_alloc_temps(dc, size, t);
+ return 2;
+}
+
+
+static unsigned int dec_dstep_r(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "dstep $r%u, $r%u\n", dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu(dc, CC_OP_DSTEP,
+ cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
+ return 2;
+}
+
+static unsigned int dec_xor_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+ DIS(fprintf (logfile, "xor.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ BUG_ON(size != 4); /* xor is dword. */
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+
+ cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_bound_r(DisasContext *dc)
+{
+ TCGv l0;
+ int size = memsize_zz(dc);
+ DIS(fprintf (logfile, "bound.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+ l0 = tcg_temp_local_new();
+ dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
+ cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
+ tcg_temp_free(l0);
+ return 2;
+}
+
+static unsigned int dec_cmp_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+ DIS(fprintf (logfile, "cmp.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+
+ cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_abs_r(DisasContext *dc)
+{
+ TCGv t0;
+
+ DIS(fprintf (logfile, "abs $r%u, $r%u\n",
+ dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ t0 = tcg_temp_new();
+ tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
+ tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
+ tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
+ tcg_temp_free(t0);
+
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
+ return 2;
+}
+
+static unsigned int dec_add_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+ DIS(fprintf (logfile, "add.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+
+ cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_addc_r(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "addc $r%u, $r%u\n",
+ dc->op1, dc->op2));
+ cris_evaluate_flags(dc);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_ADDC,
+ cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
+ return 2;
+}
+
+static unsigned int dec_mcp_r(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "mcp $p%u, $r%u\n",
+ dc->op2, dc->op1));
+ cris_evaluate_flags(dc);
+ cris_cc_mask(dc, CC_MASK_RNZV);
+ cris_alu(dc, CC_OP_MCP,
+ cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
+ return 2;
+}
+
+#if DISAS_CRIS
+static char * swapmode_name(int mode, char *modename) {
+ int i = 0;
+ if (mode & 8)
+ modename[i++] = 'n';
+ if (mode & 4)
+ modename[i++] = 'w';
+ if (mode & 2)
+ modename[i++] = 'b';
+ if (mode & 1)
+ modename[i++] = 'r';
+ modename[i++] = 0;
+ return modename;
+}
+#endif
+
+static unsigned int dec_swap_r(DisasContext *dc)
+{
+ TCGv t0;
+#if DISAS_CRIS
+ char modename[4];
+#endif
+ DIS(fprintf (logfile, "swap%s $r%u\n",
+ swapmode_name(dc->op2, modename), dc->op1));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ t0 = tcg_temp_new();
+ t_gen_mov_TN_reg(t0, dc->op1);
+ if (dc->op2 & 8)
+ tcg_gen_not_tl(t0, t0);
+ if (dc->op2 & 4)
+ t_gen_swapw(t0, t0);
+ if (dc->op2 & 2)
+ t_gen_swapb(t0, t0);
+ if (dc->op2 & 1)
+ t_gen_swapr(t0, t0);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+static unsigned int dec_or_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+ DIS(fprintf (logfile, "or.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+ cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_addi_r(DisasContext *dc)
+{
+ TCGv t0;
+ DIS(fprintf (logfile, "addi.%c $r%u, $r%u\n",
+ memsize_char(memsize_zz(dc)), dc->op2, dc->op1));
+ cris_cc_mask(dc, 0);
+ t0 = tcg_temp_new();
+ tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
+ tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+static unsigned int dec_addi_acr(DisasContext *dc)
+{
+ TCGv t0;
+ DIS(fprintf (logfile, "addi.%c $r%u, $r%u, $acr\n",
+ memsize_char(memsize_zz(dc)), dc->op2, dc->op1));
+ cris_cc_mask(dc, 0);
+ t0 = tcg_temp_new();
+ tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
+ tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+static unsigned int dec_neg_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+ DIS(fprintf (logfile, "neg.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+
+ cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+static unsigned int dec_btst_r(DisasContext *dc)
+{
+ TCGv l0;
+ DIS(fprintf (logfile, "btst $r%u, $r%u\n",
+ dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZ);
+
+ l0 = tcg_temp_local_new();
+ cris_alu(dc, CC_OP_BTST, l0, cpu_R[dc->op2], cpu_R[dc->op1], 4);
+ cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+ t_gen_mov_preg_TN(dc, PR_CCS, l0);
+ dc->flags_uptodate = 1;
+ tcg_temp_free(l0);
+ return 2;
+}
+
+static unsigned int dec_sub_r(DisasContext *dc)
+{
+ TCGv t[2];
+ int size = memsize_zz(dc);
+ DIS(fprintf (logfile, "sub.%c $r%u, $r%u\n",
+ memsize_char(size), dc->op1, dc->op2));
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu_alloc_temps(dc, size, t);
+ dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
+ cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
+ cris_alu_free_temps(dc, size, t);
+ return 2;
+}
+
+/* Zero extension. From size to dword. */
+static unsigned int dec_movu_r(DisasContext *dc)
+{
+ TCGv t0;
+ int size = memsize_z(dc);
+ DIS(fprintf (logfile, "movu.%c $r%u, $r%u\n",
+ memsize_char(size),
+ dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ t0 = tcg_temp_new();
+ dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
+ cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+/* Sign extension. From size to dword. */
+static unsigned int dec_movs_r(DisasContext *dc)
+{
+ TCGv t0;
+ int size = memsize_z(dc);
+ DIS(fprintf (logfile, "movs.%c $r%u, $r%u\n",
+ memsize_char(size),
+ dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZ);
+ t0 = tcg_temp_new();
+ /* Size can only be qi or hi. */
+ t_gen_sext(t0, cpu_R[dc->op1], size);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+/* zero extension. From size to dword. */
+static unsigned int dec_addu_r(DisasContext *dc)
+{
+ TCGv t0;
+ int size = memsize_z(dc);
+ DIS(fprintf (logfile, "addu.%c $r%u, $r%u\n",
+ memsize_char(size),
+ dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ t0 = tcg_temp_new();
+ /* Size can only be qi or hi. */
+ t_gen_zext(t0, cpu_R[dc->op1], size);
+ cris_alu(dc, CC_OP_ADD,
+ cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+/* Sign extension. From size to dword. */
+static unsigned int dec_adds_r(DisasContext *dc)
+{
+ TCGv t0;
+ int size = memsize_z(dc);
+ DIS(fprintf (logfile, "adds.%c $r%u, $r%u\n",
+ memsize_char(size),
+ dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ t0 = tcg_temp_new();
+ /* Size can only be qi or hi. */
+ t_gen_sext(t0, cpu_R[dc->op1], size);
+ cris_alu(dc, CC_OP_ADD,
+ cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+/* Zero extension. From size to dword. */
+static unsigned int dec_subu_r(DisasContext *dc)
+{
+ TCGv t0;
+ int size = memsize_z(dc);
+ DIS(fprintf (logfile, "subu.%c $r%u, $r%u\n",
+ memsize_char(size),
+ dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ t0 = tcg_temp_new();
+ /* Size can only be qi or hi. */
+ t_gen_zext(t0, cpu_R[dc->op1], size);
+ cris_alu(dc, CC_OP_SUB,
+ cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+/* Sign extension. From size to dword. */
+static unsigned int dec_subs_r(DisasContext *dc)
+{
+ TCGv t0;
+ int size = memsize_z(dc);
+ DIS(fprintf (logfile, "subs.%c $r%u, $r%u\n",
+ memsize_char(size),
+ dc->op1, dc->op2));
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ t0 = tcg_temp_new();
+ /* Size can only be qi or hi. */
+ t_gen_sext(t0, cpu_R[dc->op1], size);
+ cris_alu(dc, CC_OP_SUB,
+ cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+static unsigned int dec_setclrf(DisasContext *dc)
+{
+ uint32_t flags;
+ int set = (~dc->opcode >> 2) & 1;
+
+
+ flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
+ | EXTRACT_FIELD(dc->ir, 0, 3);
+ if (set && flags == 0) {
+ DIS(fprintf (logfile, "nop\n"));
+ return 2;
+ } else if (!set && (flags & 0x20)) {
+ DIS(fprintf (logfile, "di\n"));
+ }
+ else {
+ DIS(fprintf (logfile, "%sf %x\n",
+ set ? "set" : "clr",
+ flags));
+ }
+
+ /* User space is not allowed to touch these. Silently ignore. */
+ if (dc->tb_flags & U_FLAG) {
+ flags &= ~(S_FLAG | I_FLAG | U_FLAG);
+ }
+
+ if (flags & X_FLAG) {
+ dc->flagx_known = 1;
+ if (set)
+ dc->flags_x = X_FLAG;
+ else
+ dc->flags_x = 0;
+ }
+
+ /* Break the TB if the P flag changes. */
+ if (flags & P_FLAG) {
+ if ((set && !(dc->tb_flags & P_FLAG))
+ || (!set && (dc->tb_flags & P_FLAG))) {
+ tcg_gen_movi_tl(env_pc, dc->pc + 2);
+ dc->is_jmp = DISAS_UPDATE;
+ dc->cpustate_changed = 1;
+ }
+ }
+ if (flags & S_FLAG) {
+ dc->cpustate_changed = 1;
+ }
+
+
+ /* Simply decode the flags. */
+ cris_evaluate_flags (dc);
+ cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+ cris_update_cc_x(dc);
+ tcg_gen_movi_tl(cc_op, dc->cc_op);
+
+ if (set) {
+ if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
+ /* Enter user mode. */
+ t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
+ tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
+ dc->cpustate_changed = 1;
+ }
+ tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
+ }
+ else
+ tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
+
+ dc->flags_uptodate = 1;
+ dc->clear_x = 0;
+ return 2;
+}
+
+static unsigned int dec_move_rs(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "move $r%u, $s%u\n", dc->op1, dc->op2));
+ cris_cc_mask(dc, 0);
+ gen_helper_movl_sreg_reg(tcg_const_tl(dc->op2), tcg_const_tl(dc->op1));
+ return 2;
+}
+static unsigned int dec_move_sr(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "move $s%u, $r%u\n", dc->op2, dc->op1));
+ cris_cc_mask(dc, 0);
+ gen_helper_movl_reg_sreg(tcg_const_tl(dc->op1), tcg_const_tl(dc->op2));
+ return 2;
+}
+
+static unsigned int dec_move_rp(DisasContext *dc)
+{
+ TCGv t[2];
+ DIS(fprintf (logfile, "move $r%u, $p%u\n", dc->op1, dc->op2));
+ cris_cc_mask(dc, 0);
+
+ t[0] = tcg_temp_new();
+ if (dc->op2 == PR_CCS) {
+ cris_evaluate_flags(dc);
+ t_gen_mov_TN_reg(t[0], dc->op1);
+ if (dc->tb_flags & U_FLAG) {
+ t[1] = tcg_temp_new();
+ /* User space is not allowed to touch all flags. */
+ tcg_gen_andi_tl(t[0], t[0], 0x39f);
+ tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
+ tcg_gen_or_tl(t[0], t[1], t[0]);
+ tcg_temp_free(t[1]);
+ }
+ }
+ else
+ t_gen_mov_TN_reg(t[0], dc->op1);
+
+ t_gen_mov_preg_TN(dc, dc->op2, t[0]);
+ if (dc->op2 == PR_CCS) {
+ cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+ dc->flags_uptodate = 1;
+ }
+ tcg_temp_free(t[0]);
+ return 2;
+}
+static unsigned int dec_move_pr(DisasContext *dc)
+{
+ TCGv t0;
+ DIS(fprintf (logfile, "move $p%u, $r%u\n", dc->op1, dc->op2));
+ cris_cc_mask(dc, 0);
+
+ if (dc->op2 == PR_CCS)
+ cris_evaluate_flags(dc);
+
+ t0 = tcg_temp_new();
+ t_gen_mov_TN_preg(t0, dc->op2);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op1], cpu_R[dc->op1], t0, preg_sizes[dc->op2]);
+ tcg_temp_free(t0);
+ return 2;
+}
+
+static unsigned int dec_move_mr(DisasContext *dc)
+{
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "move.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ if (memsize == 4) {
+ insn_len = dec_prep_move_m(dc, 0, 4, cpu_R[dc->op2]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_update_cc_op(dc, CC_OP_MOVE, 4);
+ cris_update_cc_x(dc);
+ cris_update_result(dc, cpu_R[dc->op2]);
+ }
+ else {
+ TCGv t0;
+
+ t0 = tcg_temp_new();
+ insn_len = dec_prep_move_m(dc, 0, memsize, t0);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
+ tcg_temp_free(t0);
+ }
+ do_postinc(dc, memsize);
+ return insn_len;
+}
+
+static inline void cris_alu_m_alloc_temps(TCGv *t)
+{
+ t[0] = tcg_temp_new();
+ t[1] = tcg_temp_new();
+}
+
+static inline void cris_alu_m_free_temps(TCGv *t)
+{
+ tcg_temp_free(t[0]);
+ tcg_temp_free(t[1]);
+}
+
+static unsigned int dec_movs_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "movs.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ /* sign extend. */
+ insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu(dc, CC_OP_MOVE,
+ cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_addu_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "addu.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ /* sign extend. */
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_ADD,
+ cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_adds_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "adds.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ /* sign extend. */
+ insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_subu_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "subu.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ /* sign extend. */
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_subs_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "subs.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ /* sign extend. */
+ insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_movu_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+
+ DIS(fprintf (logfile, "movu.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_cmpu_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "cmpu.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_cmps_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_z(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "cmps.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_CMP,
+ cpu_R[dc->op2], cpu_R[dc->op2], t[1],
+ memsize_zz(dc));
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_cmp_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "cmp.%c [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_CMP,
+ cpu_R[dc->op2], cpu_R[dc->op2], t[1],
+ memsize_zz(dc));
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_test_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "test.%d [$r%u%s] op2=%x\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_evaluate_flags(dc);
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
+
+ cris_alu(dc, CC_OP_CMP,
+ cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_and_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "and.%d [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_add_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "add.%d [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_ADD,
+ cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_addo_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "add.%d [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
+ cris_cc_mask(dc, 0);
+ cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_bound_m(DisasContext *dc)
+{
+ TCGv l[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "bound.%d [$r%u%s, $r%u\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ l[0] = tcg_temp_local_new();
+ l[1] = tcg_temp_local_new();
+ insn_len = dec_prep_alu_m(dc, 0, memsize, l[0], l[1]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
+ do_postinc(dc, memsize);
+ tcg_temp_free(l[0]);
+ tcg_temp_free(l[1]);
+ return insn_len;
+}
+
+static unsigned int dec_addc_mr(DisasContext *dc)
+{
+ TCGv t[2];
+ int insn_len = 2;
+ DIS(fprintf (logfile, "addc [$r%u%s, $r%u\n",
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_evaluate_flags(dc);
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, 4, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
+ do_postinc(dc, 4);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_sub_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2, dc->ir, dc->zzsize));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_or_m(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len;
+ DIS(fprintf (logfile, "or.%d [$r%u%s, $r%u pc=%x\n",
+ memsize_char(memsize),
+ dc->op1, dc->postinc ? "+]" : "]",
+ dc->op2, dc->pc));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, CC_MASK_NZ);
+ cris_alu(dc, CC_OP_OR,
+ cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_move_mp(DisasContext *dc)
+{
+ TCGv t[2];
+ int memsize = memsize_zz(dc);
+ int insn_len = 2;
+
+ DIS(fprintf (logfile, "move.%c [$r%u%s, $p%u\n",
+ memsize_char(memsize),
+ dc->op1,
+ dc->postinc ? "+]" : "]",
+ dc->op2));
+
+ cris_alu_m_alloc_temps(t);
+ insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
+ cris_cc_mask(dc, 0);
+ if (dc->op2 == PR_CCS) {
+ cris_evaluate_flags(dc);
+ if (dc->tb_flags & U_FLAG) {
+ /* User space is not allowed to touch all flags. */
+ tcg_gen_andi_tl(t[1], t[1], 0x39f);
+ tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
+ tcg_gen_or_tl(t[1], t[0], t[1]);
+ }
+ }
+
+ t_gen_mov_preg_TN(dc, dc->op2, t[1]);
+
+ do_postinc(dc, memsize);
+ cris_alu_m_free_temps(t);
+ return insn_len;
+}
+
+static unsigned int dec_move_pm(DisasContext *dc)
+{
+ TCGv t0;
+ int memsize;
+
+ memsize = preg_sizes[dc->op2];
+
+ DIS(fprintf (logfile, "move.%c $p%u, [$r%u%s\n",
+ memsize_char(memsize),
+ dc->op2, dc->op1, dc->postinc ? "+]" : "]"));
+
+ /* prepare store. Address in T0, value in T1. */
+ if (dc->op2 == PR_CCS)
+ cris_evaluate_flags(dc);
+ t0 = tcg_temp_new();
+ t_gen_mov_TN_preg(t0, dc->op2);
+ cris_flush_cc_state(dc);
+ gen_store(dc, cpu_R[dc->op1], t0, memsize);
+ tcg_temp_free(t0);
+
+ cris_cc_mask(dc, 0);
+ if (dc->postinc)
+ tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
+ return 2;
+}
+
+static unsigned int dec_movem_mr(DisasContext *dc)
+{
+ TCGv_i64 tmp[16];
+ TCGv tmp32;
+ TCGv addr;
+ int i;
+ int nr = dc->op2 + 1;
+
+ DIS(fprintf (logfile, "movem [$r%u%s, $r%u\n", dc->op1,
+ dc->postinc ? "+]" : "]", dc->op2));
+
+ addr = tcg_temp_new();
+ /* There are probably better ways of doing this. */
+ cris_flush_cc_state(dc);
+ for (i = 0; i < (nr >> 1); i++) {
+ tmp[i] = tcg_temp_new_i64();
+ tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
+ gen_load64(dc, tmp[i], addr);
+ }
+ if (nr & 1) {
+ tmp32 = tcg_temp_new_i32();
+ tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
+ gen_load(dc, tmp32, addr, 4, 0);
+ }
+ tcg_temp_free(addr);
+
+ for (i = 0; i < (nr >> 1); i++) {
+ tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
+ tcg_gen_shri_i64(tmp[i], tmp[i], 32);
+ tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
+ tcg_temp_free_i64(tmp[i]);
+ }
+ if (nr & 1) {
+ tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
+ tcg_temp_free(tmp32);
+ }
+
+ /* writeback the updated pointer value. */
+ if (dc->postinc)
+ tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
+
+ /* gen_load might want to evaluate the previous insns flags. */
+ cris_cc_mask(dc, 0);
+ return 2;
+}
+
+static unsigned int dec_movem_rm(DisasContext *dc)
+{
+ TCGv tmp;
+ TCGv addr;
+ int i;
+
+ DIS(fprintf (logfile, "movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
+ dc->postinc ? "+]" : "]"));
+
+ cris_flush_cc_state(dc);
+
+ tmp = tcg_temp_new();
+ addr = tcg_temp_new();
+ tcg_gen_movi_tl(tmp, 4);
+ tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
+ for (i = 0; i <= dc->op2; i++) {
+ /* Displace addr. */
+ /* Perform the store. */
+ gen_store(dc, addr, cpu_R[i], 4);
+ tcg_gen_add_tl(addr, addr, tmp);
+ }
+ if (dc->postinc)
+ tcg_gen_mov_tl(cpu_R[dc->op1], addr);
+ cris_cc_mask(dc, 0);
+ tcg_temp_free(tmp);
+ tcg_temp_free(addr);
+ return 2;
+}
+
+static unsigned int dec_move_rm(DisasContext *dc)
+{
+ int memsize;
+
+ memsize = memsize_zz(dc);
+
+ DIS(fprintf (logfile, "move.%d $r%u, [$r%u]\n",
+ memsize, dc->op2, dc->op1));
+
+ /* prepare store. */
+ cris_flush_cc_state(dc);
+ gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
+
+ if (dc->postinc)
+ tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
+ cris_cc_mask(dc, 0);
+ return 2;
+}
+
+static unsigned int dec_lapcq(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "lapcq %x, $r%u\n",
+ dc->pc + dc->op1*2, dc->op2));
+ cris_cc_mask(dc, 0);
+ tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
+ return 2;
+}
+
+static unsigned int dec_lapc_im(DisasContext *dc)
+{
+ unsigned int rd;
+ int32_t imm;
+ int32_t pc;
+
+ rd = dc->op2;
+
+ cris_cc_mask(dc, 0);
+ imm = ldl_code(dc->pc + 2);
+ DIS(fprintf (logfile, "lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2));
+
+ pc = dc->pc;
+ pc += imm;
+ t_gen_mov_reg_TN(rd, tcg_const_tl(pc));
+ return 6;
+}
+
+/* Jump to special reg. */
+static unsigned int dec_jump_p(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "jump $p%u\n", dc->op2));
+
+ if (dc->op2 == PR_CCS)
+ cris_evaluate_flags(dc);
+ t_gen_mov_TN_preg(env_btarget, dc->op2);
+ /* rete will often have low bit set to indicate delayslot. */
+ tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
+ cris_cc_mask(dc, 0);
+ cris_prepare_jmp(dc, JMP_INDIRECT);
+ return 2;
+}
+
+/* Jump and save. */
+static unsigned int dec_jas_r(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "jas $r%u, $p%u\n", dc->op1, dc->op2));
+ cris_cc_mask(dc, 0);
+ /* Store the return address in Pd. */
+ tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
+ if (dc->op2 > 15)
+ abort();
+ t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
+
+ cris_prepare_jmp(dc, JMP_INDIRECT);
+ return 2;
+}
+
+static unsigned int dec_jas_im(DisasContext *dc)
+{
+ uint32_t imm;
+
+ imm = ldl_code(dc->pc + 2);
+
+ DIS(fprintf (logfile, "jas 0x%x\n", imm));
+ cris_cc_mask(dc, 0);
+ /* Store the return address in Pd. */
+ t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
+
+ dc->jmp_pc = imm;
+ cris_prepare_jmp(dc, JMP_DIRECT);
+ return 6;
+}
+
+static unsigned int dec_jasc_im(DisasContext *dc)
+{
+ uint32_t imm;
+
+ imm = ldl_code(dc->pc + 2);
+
+ DIS(fprintf (logfile, "jasc 0x%x\n", imm));
+ cris_cc_mask(dc, 0);
+ /* Store the return address in Pd. */
+ t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
+
+ dc->jmp_pc = imm;
+ cris_prepare_jmp(dc, JMP_DIRECT);
+ return 6;
+}
+
+static unsigned int dec_jasc_r(DisasContext *dc)
+{
+ DIS(fprintf (logfile, "jasc_r $r%u, $p%u\n", dc->op1, dc->op2));
+ cris_cc_mask(dc, 0);
+ /* Store the return address in Pd. */
+ tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
+ t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
+ cris_prepare_jmp(dc, JMP_INDIRECT);
+ return 2;
+}
+
+static unsigned int dec_bcc_im(DisasContext *dc)
+{
+ int32_t offset;
+ uint32_t cond = dc->op2;
+
+ offset = ldsw_code(dc->pc + 2);
+
+ DIS(fprintf (logfile, "b%s %d pc=%x dst=%x\n",
+ cc_name(cond), offset,
+ dc->pc, dc->pc + offset));
+
+ cris_cc_mask(dc, 0);
+ /* op2 holds the condition-code. */
+ cris_prepare_cc_branch (dc, offset, cond);
+ return 4;
+}
+
+static unsigned int dec_bas_im(DisasContext *dc)
+{
+ int32_t simm;
+
+
+ simm = ldl_code(dc->pc + 2);
+
+ DIS(fprintf (logfile, "bas 0x%x, $p%u\n", dc->pc + simm, dc->op2));
+ cris_cc_mask(dc, 0);
+ /* Store the return address in Pd. */
+ t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
+
+ dc->jmp_pc = dc->pc + simm;
+ cris_prepare_jmp(dc, JMP_DIRECT);
+ return 6;
+}
+
+static unsigned int dec_basc_im(DisasContext *dc)
+{
+ int32_t simm;
+ simm = ldl_code(dc->pc + 2);
+
+ DIS(fprintf (logfile, "basc 0x%x, $p%u\n", dc->pc + simm, dc->op2));
+ cris_cc_mask(dc, 0);
+ /* Store the return address in Pd. */
+ t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
+
+ dc->jmp_pc = dc->pc + simm;
+ cris_prepare_jmp(dc, JMP_DIRECT);
+ return 6;
+}
+
+static unsigned int dec_rfe_etc(DisasContext *dc)
+{
+ cris_cc_mask(dc, 0);
+
+ if (dc->op2 == 15) /* ignore halt. */
+ return 2;
+
+ switch (dc->op2 & 7) {
+ case 2:
+ /* rfe. */
+ DIS(fprintf(logfile, "rfe\n"));
+ cris_evaluate_flags(dc);
+ gen_helper_rfe();
+ dc->is_jmp = DISAS_UPDATE;
+ break;
+ case 5:
+ /* rfn. */
+ DIS(fprintf(logfile, "rfn\n"));
+ cris_evaluate_flags(dc);
+ gen_helper_rfn();
+ dc->is_jmp = DISAS_UPDATE;
+ break;
+ case 6:
+ DIS(fprintf(logfile, "break %d\n", dc->op1));
+ cris_evaluate_flags (dc);
+ /* break. */
+ tcg_gen_movi_tl(env_pc, dc->pc + 2);
+
+ /* Breaks start at 16 in the exception vector. */
+ t_gen_mov_env_TN(trap_vector,
+ tcg_const_tl(dc->op1 + 16));
+ t_gen_raise_exception(EXCP_BREAK);
+ dc->is_jmp = DISAS_UPDATE;
+ break;
+ default:
+ printf ("op2=%x\n", dc->op2);
+ BUG();
+ break;
+
+ }
+ return 2;
+}
+
+static unsigned int dec_ftag_fidx_d_m(DisasContext *dc)
+{
+ return 2;
+}
+
+static unsigned int dec_ftag_fidx_i_m(DisasContext *dc)
+{
+ return 2;
+}
+
+static unsigned int dec_null(DisasContext *dc)
+{
+ printf ("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
+ dc->pc, dc->opcode, dc->op1, dc->op2);
+ fflush(NULL);
+ BUG();
+ return 2;
+}
+
+static struct decoder_info {
+ struct {
+ uint32_t bits;
+ uint32_t mask;
+ };
+ unsigned int (*dec)(DisasContext *dc);
+} decinfo[] = {
+ /* Order matters here. */
+ {DEC_MOVEQ, dec_moveq},
+ {DEC_BTSTQ, dec_btstq},
+ {DEC_CMPQ, dec_cmpq},
+ {DEC_ADDOQ, dec_addoq},
+ {DEC_ADDQ, dec_addq},
+ {DEC_SUBQ, dec_subq},
+ {DEC_ANDQ, dec_andq},
+ {DEC_ORQ, dec_orq},
+ {DEC_ASRQ, dec_asrq},
+ {DEC_LSLQ, dec_lslq},
+ {DEC_LSRQ, dec_lsrq},
+ {DEC_BCCQ, dec_bccq},
+
+ {DEC_BCC_IM, dec_bcc_im},
+ {DEC_JAS_IM, dec_jas_im},
+ {DEC_JAS_R, dec_jas_r},
+ {DEC_JASC_IM, dec_jasc_im},
+ {DEC_JASC_R, dec_jasc_r},
+ {DEC_BAS_IM, dec_bas_im},
+ {DEC_BASC_IM, dec_basc_im},
+ {DEC_JUMP_P, dec_jump_p},
+ {DEC_LAPC_IM, dec_lapc_im},
+ {DEC_LAPCQ, dec_lapcq},
+
+ {DEC_RFE_ETC, dec_rfe_etc},
+ {DEC_ADDC_MR, dec_addc_mr},
+
+ {DEC_MOVE_MP, dec_move_mp},
+ {DEC_MOVE_PM, dec_move_pm},
+ {DEC_MOVEM_MR, dec_movem_mr},
+ {DEC_MOVEM_RM, dec_movem_rm},
+ {DEC_MOVE_PR, dec_move_pr},
+ {DEC_SCC_R, dec_scc_r},
+ {DEC_SETF, dec_setclrf},
+ {DEC_CLEARF, dec_setclrf},
+
+ {DEC_MOVE_SR, dec_move_sr},
+ {DEC_MOVE_RP, dec_move_rp},
+ {DEC_SWAP_R, dec_swap_r},
+ {DEC_ABS_R, dec_abs_r},
+ {DEC_LZ_R, dec_lz_r},
+ {DEC_MOVE_RS, dec_move_rs},
+ {DEC_BTST_R, dec_btst_r},
+ {DEC_ADDC_R, dec_addc_r},
+
+ {DEC_DSTEP_R, dec_dstep_r},
+ {DEC_XOR_R, dec_xor_r},
+ {DEC_MCP_R, dec_mcp_r},
+ {DEC_CMP_R, dec_cmp_r},
+
+ {DEC_ADDI_R, dec_addi_r},
+ {DEC_ADDI_ACR, dec_addi_acr},
+
+ {DEC_ADD_R, dec_add_r},
+ {DEC_SUB_R, dec_sub_r},
+
+ {DEC_ADDU_R, dec_addu_r},
+ {DEC_ADDS_R, dec_adds_r},
+ {DEC_SUBU_R, dec_subu_r},
+ {DEC_SUBS_R, dec_subs_r},
+ {DEC_LSL_R, dec_lsl_r},
+
+ {DEC_AND_R, dec_and_r},
+ {DEC_OR_R, dec_or_r},
+ {DEC_BOUND_R, dec_bound_r},
+ {DEC_ASR_R, dec_asr_r},
+ {DEC_LSR_R, dec_lsr_r},
+
+ {DEC_MOVU_R, dec_movu_r},
+ {DEC_MOVS_R, dec_movs_r},
+ {DEC_NEG_R, dec_neg_r},
+ {DEC_MOVE_R, dec_move_r},
+
+ {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
+ {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
+
+ {DEC_MULS_R, dec_muls_r},
+ {DEC_MULU_R, dec_mulu_r},
+
+ {DEC_ADDU_M, dec_addu_m},
+ {DEC_ADDS_M, dec_adds_m},
+ {DEC_SUBU_M, dec_subu_m},
+ {DEC_SUBS_M, dec_subs_m},
+
+ {DEC_CMPU_M, dec_cmpu_m},
+ {DEC_CMPS_M, dec_cmps_m},
+ {DEC_MOVU_M, dec_movu_m},
+ {DEC_MOVS_M, dec_movs_m},
+
+ {DEC_CMP_M, dec_cmp_m},
+ {DEC_ADDO_M, dec_addo_m},
+ {DEC_BOUND_M, dec_bound_m},
+ {DEC_ADD_M, dec_add_m},
+ {DEC_SUB_M, dec_sub_m},
+ {DEC_AND_M, dec_and_m},
+ {DEC_OR_M, dec_or_m},
+ {DEC_MOVE_RM, dec_move_rm},
+ {DEC_TEST_M, dec_test_m},
+ {DEC_MOVE_MR, dec_move_mr},
+
+ {{0, 0}, dec_null}
+};
+
+static inline unsigned int
+cris_decoder(DisasContext *dc)
+{
+ unsigned int insn_len = 2;
+ int i;
+
+ if (unlikely(loglevel & CPU_LOG_TB_OP))
+ tcg_gen_debug_insn_start(dc->pc);
+
+ /* Load a halfword onto the instruction register. */
+ dc->ir = lduw_code(dc->pc);
+
+ /* Now decode it. */
+ dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
+ dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
+ dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
+ dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
+ dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
+ dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
+
+ /* Large switch for all insns. */
+ for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
+ if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits)
+ {
+ insn_len = decinfo[i].dec(dc);
+ break;
+ }
+ }
+
+#if !defined(CONFIG_USER_ONLY)
+ /* Single-stepping ? */
+ if (dc->tb_flags & S_FLAG) {
+ int l1;
+
+ l1 = gen_new_label();
+ tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
+ /* We treat SPC as a break with an odd trap vector. */
+ cris_evaluate_flags (dc);
+ t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
+ tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
+ tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
+ t_gen_raise_exception(EXCP_BREAK);
+ gen_set_label(l1);
+ }
+#endif
+ return insn_len;
+}
+
+static void check_breakpoint(CPUState *env, DisasContext *dc)
+{
+ CPUBreakpoint *bp;
+
+ if (unlikely(!TAILQ_EMPTY(&env->breakpoints))) {
+ TAILQ_FOREACH(bp, &env->breakpoints, entry) {
+ if (bp->pc == dc->pc) {
+ cris_evaluate_flags (dc);
+ tcg_gen_movi_tl(env_pc, dc->pc);
+ t_gen_raise_exception(EXCP_DEBUG);
+ dc->is_jmp = DISAS_UPDATE;
+ }
+ }
+ }
+}
+
+
+/*
+ * Delay slots on QEMU/CRIS.
+ *
+ * If an exception hits on a delayslot, the core will let ERP (the Exception
+ * Return Pointer) point to the branch (the previous) insn and set the lsb to
+ * to give SW a hint that the exception actually hit on the dslot.
+ *
+ * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
+ * the core and any jmp to an odd addresses will mask off that lsb. It is
+ * simply there to let sw know there was an exception on a dslot.
+ *
+ * When the software returns from an exception, the branch will re-execute.
+ * On QEMU care needs to be taken when a branch+delayslot sequence is broken
+ * and the branch and delayslot dont share pages.
+ *
+ * The TB contaning the branch insn will set up env->btarget and evaluate
+ * env->btaken. When the translation loop exits we will note that the branch
+ * sequence is broken and let env->dslot be the size of the branch insn (those
+ * vary in length).
+ *
+ * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
+ * set). It will also expect to have env->dslot setup with the size of the
+ * delay slot so that env->pc - env->dslot point to the branch insn. This TB
+ * will execute the dslot and take the branch, either to btarget or just one
+ * insn ahead.
+ *
+ * When exceptions occur, we check for env->dslot in do_interrupt to detect
+ * broken branch sequences and setup $erp accordingly (i.e let it point to the
+ * branch and set lsb). Then env->dslot gets cleared so that the exception
+ * handler can enter. When returning from exceptions (jump $erp) the lsb gets
+ * masked off and we will reexecute the branch insn.
+ *
+ */
+
+/* generate intermediate code for basic block 'tb'. */
+static void
+gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
+ int search_pc)
+{
+ uint16_t *gen_opc_end;
+ uint32_t pc_start;
+ unsigned int insn_len;
+ int j, lj;
+ struct DisasContext ctx;
+ struct DisasContext *dc = &ctx;
+ uint32_t next_page_start;
+ target_ulong npc;
+ int num_insns;
+ int max_insns;
+
+ if (!logfile)
+ logfile = stderr;
+
+ /* Odd PC indicates that branch is rexecuting due to exception in the
+ * delayslot, like in real hw.
+ */
+ pc_start = tb->pc & ~1;
+ dc->env = env;
+ dc->tb = tb;
+
+ gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
+
+ dc->is_jmp = DISAS_NEXT;
+ dc->ppc = pc_start;
+ dc->pc = pc_start;
+ dc->singlestep_enabled = env->singlestep_enabled;
+ dc->flags_uptodate = 1;
+ dc->flagx_known = 1;
+ dc->flags_x = tb->flags & X_FLAG;
+ dc->cc_x_uptodate = 0;
+ dc->cc_mask = 0;
+ dc->update_cc = 0;
+
+ cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+ dc->cc_size_uptodate = -1;
+
+ /* Decode TB flags. */
+ dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG | X_FLAG);
+ dc->delayed_branch = !!(tb->flags & 7);
+ if (dc->delayed_branch)
+ dc->jmp = JMP_INDIRECT;
+ else
+ dc->jmp = JMP_NOJMP;
+
+ dc->cpustate_changed = 0;
+
+ if (loglevel & CPU_LOG_TB_IN_ASM) {
+ fprintf(logfile,
+ "srch=%d pc=%x %x flg=%llx bt=%x ds=%u ccs=%x\n"
+ "pid=%x usp=%x\n"
+ "%x.%x.%x.%x\n"
+ "%x.%x.%x.%x\n"
+ "%x.%x.%x.%x\n"
+ "%x.%x.%x.%x\n",
+ search_pc, dc->pc, dc->ppc,
+ (unsigned long long)tb->flags,
+ env->btarget, (unsigned)tb->flags & 7,
+ env->pregs[PR_CCS],
+ env->pregs[PR_PID], env->pregs[PR_USP],
+ env->regs[0], env->regs[1], env->regs[2], env->regs[3],
+ env->regs[4], env->regs[5], env->regs[6], env->regs[7],
+ env->regs[8], env->regs[9],
+ env->regs[10], env->regs[11],
+ env->regs[12], env->regs[13],
+ env->regs[14], env->regs[15]);
+ fprintf(logfile, "--------------\n");
+ fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
+ }
+
+ next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
+ lj = -1;
+ num_insns = 0;
+ max_insns = tb->cflags & CF_COUNT_MASK;
+ if (max_insns == 0)
+ max_insns = CF_COUNT_MASK;
+
+ gen_icount_start();
+ do
+ {
+ check_breakpoint(env, dc);
+
+ if (search_pc) {
+ j = gen_opc_ptr - gen_opc_buf;
+ if (lj < j) {
+ lj++;
+ while (lj < j)
+ gen_opc_instr_start[lj++] = 0;
+ }
+ if (dc->delayed_branch == 1)
+ gen_opc_pc[lj] = dc->ppc | 1;
+ else
+ gen_opc_pc[lj] = dc->pc;
+ gen_opc_instr_start[lj] = 1;
+ gen_opc_icount[lj] = num_insns;
+ }
+
+ /* Pretty disas. */
+ DIS(fprintf(logfile, "%8.8x:\t", dc->pc));
+
+ if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
+ gen_io_start();
+ dc->clear_x = 1;
+
+ insn_len = cris_decoder(dc);
+ dc->ppc = dc->pc;
+ dc->pc += insn_len;
+ if (dc->clear_x)
+ cris_clear_x_flag(dc);
+
+ num_insns++;
+ /* Check for delayed branches here. If we do it before
+ actually generating any host code, the simulator will just
+ loop doing nothing for on this program location. */
+ if (dc->delayed_branch) {
+ dc->delayed_branch--;
+ if (dc->delayed_branch == 0)
+ {
+ if (tb->flags & 7)
+ t_gen_mov_env_TN(dslot,
+ tcg_const_tl(0));
+ if (dc->jmp == JMP_DIRECT) {
+ dc->is_jmp = DISAS_NEXT;
+ } else {
+ t_gen_cc_jmp(env_btarget,
+ tcg_const_tl(dc->pc));
+ dc->is_jmp = DISAS_JUMP;
+ }
+ break;
+ }
+ }
+
+ /* If we are rexecuting a branch due to exceptions on
+ delay slots dont break. */
+ if (!(tb->pc & 1) && env->singlestep_enabled)
+ break;
+ } while (!dc->is_jmp && !dc->cpustate_changed
+ && gen_opc_ptr < gen_opc_end
+ && (dc->pc < next_page_start)
+ && num_insns < max_insns);
+
+ npc = dc->pc;
+ if (dc->jmp == JMP_DIRECT && !dc->delayed_branch)
+ npc = dc->jmp_pc;
+
+ if (tb->cflags & CF_LAST_IO)
+ gen_io_end();
+ /* Force an update if the per-tb cpu state has changed. */
+ if (dc->is_jmp == DISAS_NEXT
+ && (dc->cpustate_changed || !dc->flagx_known
+ || (dc->flags_x != (tb->flags & X_FLAG)))) {
+ dc->is_jmp = DISAS_UPDATE;
+ tcg_gen_movi_tl(env_pc, npc);
+ }
+ /* Broken branch+delayslot sequence. */
+ if (dc->delayed_branch == 1) {
+ /* Set env->dslot to the size of the branch insn. */
+ t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
+ cris_store_direct_jmp(dc);
+ }
+
+ cris_evaluate_flags (dc);
+
+ if (unlikely(env->singlestep_enabled)) {
+ if (dc->is_jmp == DISAS_NEXT)
+ tcg_gen_movi_tl(env_pc, npc);
+ t_gen_raise_exception(EXCP_DEBUG);
+ } else {
+ switch(dc->is_jmp) {
+ case DISAS_NEXT:
+ gen_goto_tb(dc, 1, npc);
+ break;
+ default:
+ case DISAS_JUMP:
+ case DISAS_UPDATE:
+ /* indicate that the hash table must be used
+ to find the next TB */
+ tcg_gen_exit_tb(0);
+ break;
+ case DISAS_SWI:
+ case DISAS_TB_JUMP:
+ /* nothing more to generate */
+ break;
+ }
+ }
+ gen_icount_end(tb, num_insns);
+ *gen_opc_ptr = INDEX_op_end;
+ if (search_pc) {
+ j = gen_opc_ptr - gen_opc_buf;
+ lj++;
+ while (lj <= j)
+ gen_opc_instr_start[lj++] = 0;
+ } else {
+ tb->size = dc->pc - pc_start;
+ tb->icount = num_insns;
+ }
+
+#ifdef DEBUG_DISAS
+#if !DISAS_CRIS
+ if (loglevel & CPU_LOG_TB_IN_ASM) {
+ target_disas(logfile, pc_start, dc->pc - pc_start, 0);
+ fprintf(logfile, "\nisize=%d osize=%zd\n",
+ dc->pc - pc_start, gen_opc_ptr - gen_opc_buf);
+ }
+#endif
+#endif
+}
+
+void gen_intermediate_code (CPUState *env, struct TranslationBlock *tb)
+{
+ gen_intermediate_code_internal(env, tb, 0);
+}
+
+void gen_intermediate_code_pc (CPUState *env, struct TranslationBlock *tb)
+{
+ gen_intermediate_code_internal(env, tb, 1);
+}
+
+void cpu_dump_state (CPUState *env, FILE *f,
+ int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
+ int flags)
+{
+ int i;
+ uint32_t srs;
+
+ if (!env || !f)
+ return;
+
+ cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
+ "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
+ env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
+ env->cc_op,
+ env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
+
+
+ for (i = 0; i < 16; i++) {
+ cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
+ if ((i + 1) % 4 == 0)
+ cpu_fprintf(f, "\n");
+ }
+ cpu_fprintf(f, "\nspecial regs:\n");
+ for (i = 0; i < 16; i++) {
+ cpu_fprintf(f, "p%2.2d=%8.8x ", i, env->pregs[i]);
+ if ((i + 1) % 4 == 0)
+ cpu_fprintf(f, "\n");
+ }
+ srs = env->pregs[PR_SRS];
+ cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
+ if (srs < 256) {
+ for (i = 0; i < 16; i++) {
+ cpu_fprintf(f, "s%2.2d=%8.8x ",
+ i, env->sregs[srs][i]);
+ if ((i + 1) % 4 == 0)
+ cpu_fprintf(f, "\n");
+ }
+ }
+ cpu_fprintf(f, "\n\n");
+
+}
+
+CPUCRISState *cpu_cris_init (const char *cpu_model)
+{
+ CPUCRISState *env;
+ static int tcg_initialized = 0;
+ int i;
+
+ env = qemu_mallocz(sizeof(CPUCRISState));
+ if (!env)
+ return NULL;
+
+ cpu_exec_init(env);
+ cpu_reset(env);
+
+ if (tcg_initialized)
+ return env;
+
+ tcg_initialized = 1;
+
+ cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+ cc_x = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, cc_x), "cc_x");
+ cc_src = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, cc_src), "cc_src");
+ cc_dest = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, cc_dest),
+ "cc_dest");
+ cc_result = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, cc_result),
+ "cc_result");
+ cc_op = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, cc_op), "cc_op");
+ cc_size = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, cc_size),
+ "cc_size");
+ cc_mask = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, cc_mask),
+ "cc_mask");
+
+ env_pc = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, pc),
+ "pc");
+ env_btarget = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, btarget),
+ "btarget");
+ env_btaken = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, btaken),
+ "btaken");
+ for (i = 0; i < 16; i++) {
+ cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, regs[i]),
+ regnames[i]);
+ }
+ for (i = 0; i < 16; i++) {
+ cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, pregs[i]),
+ pregnames[i]);
+ }
+
+#define GEN_HELPER 2
+#include "helper.h"
+
+ return env;
+}
+
+void cpu_reset (CPUCRISState *env)
+{
+ memset(env, 0, offsetof(CPUCRISState, breakpoints));
+ tlb_flush(env, 1);
+
+ env->pregs[PR_VR] = 32;
+#if defined(CONFIG_USER_ONLY)
+ /* start in user mode with interrupts enabled. */
+ env->pregs[PR_CCS] |= U_FLAG | I_FLAG;
+#else
+ env->pregs[PR_CCS] = 0;
+#endif
+}
+
+void gen_pc_load(CPUState *env, struct TranslationBlock *tb,
+ unsigned long searched_pc, int pc_pos, void *puc)
+{
+ env->pc = gen_opc_pc[pc_pos];
+}