OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity
c48fcb4751
qemu-e2k/target-sh4/translate.c
aurel32 24988dc241 SH4, fix several instructions 
fix instruction code for frchg, fschg, ocbp.
fix addressing mode handling for @Rn+, @-Rn, @(disp,gbr).
fix operation for div0s.
fix comments for mov imm, add imm, @(r0+,gbr), mac.l @Rm+,@Rn+.
fix ldb to ldub for or/tst/xor.b #imm,@(r0,gbr).
add fmov extended operations.
add fcmp/eq, fcmp/gt, fneg, fabs, fsqrt, fcnvsd, fcnvds.

(Takashi Yoshii)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4040 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-11 23:22:37 +00:00

1305 lines
35 KiB
C
Raw Blame History

/*
* SH4 translation
*
* Copyright (c) 2005 Samuel Tardieu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <assert.h>
#define DEBUG_DISAS
#define SH4_DEBUG_DISAS
//#define SH4_SINGLE_STEP
#include "cpu.h"
#include "exec-all.h"
#include "disas.h"
#include "tcg-op.h"
typedef struct DisasContext {
struct TranslationBlock *tb;
target_ulong pc;
uint32_t sr;
uint32_t fpscr;
uint16_t opcode;
uint32_t flags;
int bstate;
int memidx;
uint32_t delayed_pc;
int singlestep_enabled;
} DisasContext;
enum {
BS_NONE = 0, /* We go out of the TB without reaching a branch or an
* exception condition
*/
BS_STOP = 1, /* We want to stop translation for any reason */
BS_BRANCH = 2, /* We reached a branch condition */
BS_EXCP = 3, /* We reached an exception condition */
};
#ifdef CONFIG_USER_ONLY
#define GEN_OP_LD(width, reg) \
void gen_op_ld##width##_T0_##reg (DisasContext *ctx) { \
gen_op_ld##width##_T0_##reg##_raw(); \
}
#define GEN_OP_ST(width, reg) \
void gen_op_st##width##_##reg##_T1 (DisasContext *ctx) { \
gen_op_st##width##_##reg##_T1_raw(); \
}
#else
#define GEN_OP_LD(width, reg) \
void gen_op_ld##width##_T0_##reg (DisasContext *ctx) { \
if (ctx->memidx) gen_op_ld##width##_T0_##reg##_kernel(); \
else gen_op_ld##width##_T0_##reg##_user();\
}
#define GEN_OP_ST(width, reg) \
void gen_op_st##width##_##reg##_T1 (DisasContext *ctx) { \
if (ctx->memidx) gen_op_st##width##_##reg##_T1_kernel(); \
else gen_op_st##width##_##reg##_T1_user();\
}
#endif
GEN_OP_LD(ub, T0)
GEN_OP_LD(b, T0)
GEN_OP_ST(b, T0)
GEN_OP_LD(uw, T0)
GEN_OP_LD(w, T0)
GEN_OP_ST(w, T0)
GEN_OP_LD(l, T0)
GEN_OP_ST(l, T0)
GEN_OP_LD(fl, FT0)
GEN_OP_ST(fl, FT0)
GEN_OP_LD(fq, DT0)
GEN_OP_ST(fq, DT0)
void cpu_dump_state(CPUState * env, FILE * f,
int (*cpu_fprintf) (FILE * f, const char *fmt, ...),
int flags)
{
int i;
cpu_fprintf(f, "pc=0x%08x sr=0x%08x pr=0x%08x fpscr=0x%08x\n",
env->pc, env->sr, env->pr, env->fpscr);
for (i = 0; i < 24; i += 4) {
cpu_fprintf(f, "r%d=0x%08x r%d=0x%08x r%d=0x%08x r%d=0x%08x\n",
i, env->gregs[i], i + 1, env->gregs[i + 1],
i + 2, env->gregs[i + 2], i + 3, env->gregs[i + 3]);
}
if (env->flags & DELAY_SLOT) {
cpu_fprintf(f, "in delay slot (delayed_pc=0x%08x)\n",
env->delayed_pc);
} else if (env->flags & DELAY_SLOT_CONDITIONAL) {
cpu_fprintf(f, "in conditional delay slot (delayed_pc=0x%08x)\n",
env->delayed_pc);
}
}
void cpu_sh4_reset(CPUSH4State * env)
{
#if defined(CONFIG_USER_ONLY)
env->sr = SR_FD; /* FD - kernel does lazy fpu context switch */
#else
env->sr = 0x700000F0; /* MD, RB, BL, I3-I0 */
#endif
env->vbr = 0;
env->pc = 0xA0000000;
#if defined(CONFIG_USER_ONLY)
env->fpscr = FPSCR_PR; /* value for userspace according to the kernel */
set_float_rounding_mode(float_round_nearest_even, &env->fp_status); /* ?! */
#else
env->fpscr = 0x00040001; /* CPU reset value according to SH4 manual */
set_float_rounding_mode(float_round_to_zero, &env->fp_status);
#endif
env->mmucr = 0;
}
CPUSH4State *cpu_sh4_init(const char *cpu_model)
{
CPUSH4State *env;
env = qemu_mallocz(sizeof(CPUSH4State));
if (!env)
return NULL;
cpu_exec_init(env);
cpu_sh4_reset(env);
tlb_flush(env, 1);
return env;
}
static void gen_goto_tb(DisasContext * ctx, int n, target_ulong dest)
{
TranslationBlock *tb;
tb = ctx->tb;
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) &&
!ctx->singlestep_enabled) {
/* Use a direct jump if in same page and singlestep not enabled */
tcg_gen_goto_tb(n);
gen_op_movl_imm_PC(dest);
tcg_gen_exit_tb((long) tb + n);
} else {
gen_op_movl_imm_PC(dest);
if (ctx->singlestep_enabled)
gen_op_debug();
tcg_gen_exit_tb(0);
}
}
static void gen_jump(DisasContext * ctx)
{
if (ctx->delayed_pc == (uint32_t) - 1) {
/* Target is not statically known, it comes necessarily from a
delayed jump as immediate jump are conditinal jumps */
gen_op_movl_delayed_pc_PC();
if (ctx->singlestep_enabled)
gen_op_debug();
tcg_gen_exit_tb(0);
} else {
gen_goto_tb(ctx, 0, ctx->delayed_pc);
}
}
/* Immediate conditional jump (bt or bf) */
static void gen_conditional_jump(DisasContext * ctx,
target_ulong ift, target_ulong ifnott)
{
int l1;
l1 = gen_new_label();
gen_op_jT(l1);
gen_goto_tb(ctx, 0, ifnott);
gen_set_label(l1);
gen_goto_tb(ctx, 1, ift);
}
/* Delayed conditional jump (bt or bf) */
static void gen_delayed_conditional_jump(DisasContext * ctx)
{
int l1;
l1 = gen_new_label();
gen_op_jdelayed(l1);
gen_goto_tb(ctx, 1, ctx->pc + 2);
gen_set_label(l1);
gen_jump(ctx);
}
#define B3_0 (ctx->opcode & 0xf)
#define B6_4 ((ctx->opcode >> 4) & 0x7)
#define B7_4 ((ctx->opcode >> 4) & 0xf)
#define B7_0 (ctx->opcode & 0xff)
#define B7_0s ((int32_t) (int8_t) (ctx->opcode & 0xff))
#define B11_0s (ctx->opcode & 0x800 ? 0xfffff000 | (ctx->opcode & 0xfff) : \
(ctx->opcode & 0xfff))
#define B11_8 ((ctx->opcode >> 8) & 0xf)
#define B15_12 ((ctx->opcode >> 12) & 0xf)
#define REG(x) ((x) < 8 && (ctx->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB) ? \
(x) + 16 : (x))
#define ALTREG(x) ((x) < 8 && (ctx->sr & (SR_MD | SR_RB)) != (SR_MD | SR_RB) \
? (x) + 16 : (x))
#define FREG(x) (ctx->fpscr & FPSCR_FR ? (x) ^ 0x10 : (x))
#define XHACK(x) ((((x) & 1 ) << 4) | ((x) & 0xe))
#define XREG(x) (ctx->fpscr & FPSCR_FR ? XHACK(x) ^ 0x10 : XHACK(x))
#define DREG(x) FREG(x) /* Assumes lsb of (x) is always 0 */
#define CHECK_NOT_DELAY_SLOT \
if (ctx->flags & (DELAY_SLOT | DELAY_SLOT_CONDITIONAL)) \
{gen_op_raise_slot_illegal_instruction (); ctx->bstate = BS_EXCP; \
return;}
void _decode_opc(DisasContext * ctx)
{
#if 0
fprintf(stderr, "Translating opcode 0x%04x\n", ctx->opcode);
#endif
switch (ctx->opcode) {
case 0x0019: /* div0u */
gen_op_div0u();
return;
case 0x000b: /* rts */
CHECK_NOT_DELAY_SLOT gen_op_rts();
ctx->flags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
return;
case 0x0028: /* clrmac */
gen_op_clrmac();
return;
case 0x0048: /* clrs */
gen_op_clrs();
return;
case 0x0008: /* clrt */
gen_op_clrt();
return;
case 0x0038: /* ldtlb */
assert(0); /* XXXXX */
return;
case 0x002b: /* rte */
CHECK_NOT_DELAY_SLOT gen_op_rte();
ctx->flags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
return;
case 0x0058: /* sets */
gen_op_sets();
return;
case 0x0018: /* sett */
gen_op_sett();
return;
case 0xfbfd: /* frchg */
gen_op_frchg();
ctx->bstate = BS_STOP;
return;
case 0xf3fd: /* fschg */
gen_op_fschg();
ctx->bstate = BS_STOP;
return;
case 0x0009: /* nop */
return;
case 0x001b: /* sleep */
assert(0); /* XXXXX */
return;
}
switch (ctx->opcode & 0xf000) {
case 0x1000: /* mov.l Rm,@(disp,Rn) */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_addl_imm_T1(B3_0 * 4);
gen_op_stl_T0_T1(ctx);
return;
case 0x5000: /* mov.l @(disp,Rm),Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_addl_imm_T0(B3_0 * 4);
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0xe000: /* mov #imm,Rn */
gen_op_movl_imm_rN(B7_0s, REG(B11_8));
return;
case 0x9000: /* mov.w @(disp,PC),Rn */
gen_op_movl_imm_T0(ctx->pc + 4 + B7_0 * 2);
gen_op_ldw_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0xd000: /* mov.l @(disp,PC),Rn */
gen_op_movl_imm_T0((ctx->pc + 4 + B7_0 * 4) & ~3);
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x7000: /* add #imm,Rn */
gen_op_add_imm_rN(B7_0s, REG(B11_8));
return;
case 0xa000: /* bra disp */
CHECK_NOT_DELAY_SLOT
gen_op_bra(ctx->delayed_pc = ctx->pc + 4 + B11_0s * 2);
ctx->flags |= DELAY_SLOT;
return;
case 0xb000: /* bsr disp */
CHECK_NOT_DELAY_SLOT
gen_op_bsr(ctx->pc + 4, ctx->delayed_pc =
ctx->pc + 4 + B11_0s * 2);
ctx->flags |= DELAY_SLOT;
return;
}
switch (ctx->opcode & 0xf00f) {
case 0x6003: /* mov Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x2000: /* mov.b Rm,@Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stb_T0_T1(ctx);
return;
case 0x2001: /* mov.w Rm,@Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stw_T0_T1(ctx);
return;
case 0x2002: /* mov.l Rm,@Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stl_T0_T1(ctx);
return;
case 0x6000: /* mov.b @Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldb_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x6001: /* mov.w @Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldw_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x6002: /* mov.l @Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x2004: /* mov.b Rm,@-Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_dec1_rN(REG(B11_8));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stb_T0_T1(ctx);
return;
case 0x2005: /* mov.w Rm,@-Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_dec2_rN(REG(B11_8));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stw_T0_T1(ctx);
return;
case 0x2006: /* mov.l Rm,@-Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_dec4_rN(REG(B11_8));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stl_T0_T1(ctx);
return;
case 0x6004: /* mov.b @Rm+,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldb_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
if ( B11_8 != B7_4 )
gen_op_inc1_rN(REG(B7_4));
return;
case 0x6005: /* mov.w @Rm+,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldw_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
if ( B11_8 != B7_4 )
gen_op_inc2_rN(REG(B7_4));
return;
case 0x6006: /* mov.l @Rm+,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
if ( B11_8 != B7_4 )
gen_op_inc4_rN(REG(B7_4));
return;
case 0x0004: /* mov.b Rm,@(R0,Rn) */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_add_rN_T1(REG(0));
gen_op_stb_T0_T1(ctx);
return;
case 0x0005: /* mov.w Rm,@(R0,Rn) */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_add_rN_T1(REG(0));
gen_op_stw_T0_T1(ctx);
return;
case 0x0006: /* mov.l Rm,@(R0,Rn) */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_add_rN_T1(REG(0));
gen_op_stl_T0_T1(ctx);
return;
case 0x000c: /* mov.b @(R0,Rm),Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_add_rN_T0(REG(0));
gen_op_ldb_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x000d: /* mov.w @(R0,Rm),Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_add_rN_T0(REG(0));
gen_op_ldw_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x000e: /* mov.l @(R0,Rm),Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_add_rN_T0(REG(0));
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x6008: /* swap.b Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_swapb_T0();
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x6009: /* swap.w Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_swapw_T0();
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x200d: /* xtrct Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_xtrct_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x300c: /* add Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_add_T0_rN(REG(B11_8));
return;
case 0x300e: /* addc Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_addc_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x300f: /* addv Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_addv_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x2009: /* and Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_and_T0_rN(REG(B11_8));
return;
case 0x3000: /* cmp/eq Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_cmp_eq_T0_T1();
return;
case 0x3003: /* cmp/ge Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_cmp_ge_T0_T1();
return;
case 0x3007: /* cmp/gt Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_cmp_gt_T0_T1();
return;
case 0x3006: /* cmp/hi Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_cmp_hi_T0_T1();
return;
case 0x3002: /* cmp/hs Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_cmp_hs_T0_T1();
return;
case 0x200c: /* cmp/str Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_cmp_str_T0_T1();
return;
case 0x2007: /* div0s Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_div0s_T0_T1();
return;
case 0x3004: /* div1 Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_div1_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x300d: /* dmuls.l Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_dmulsl_T0_T1();
return;
case 0x3005: /* dmulu.l Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_dmulul_T0_T1();
return;
case 0x600e: /* exts.b Rm,Rn */
gen_op_movb_rN_T0(REG(B7_4));
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x600f: /* exts.w Rm,Rn */
gen_op_movw_rN_T0(REG(B7_4));
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x600c: /* extu.b Rm,Rn */
gen_op_movub_rN_T0(REG(B7_4));
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x600d: /* extu.w Rm,Rn */
gen_op_movuw_rN_T0(REG(B7_4));
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x000f: /* mac.l @Rm+,@Rn+ */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_T1();
gen_op_inc4_rN(REG(B11_8));
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldl_T0_T0(ctx);
gen_op_macl_T0_T1();
gen_op_inc4_rN(REG(B7_4));
return;
case 0x400f: /* mac.w @Rm+,@Rn+ */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_T1();
gen_op_inc2_rN(REG(B11_8));
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldl_T0_T0(ctx);
gen_op_macw_T0_T1();
gen_op_inc2_rN(REG(B7_4));
return;
case 0x0007: /* mul.l Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_mull_T0_T1();
return;
case 0x200f: /* muls.w Rm,Rn */
gen_op_movw_rN_T0(REG(B7_4));
gen_op_movw_rN_T1(REG(B11_8));
gen_op_mulsw_T0_T1();
return;
case 0x200e: /* mulu.w Rm,Rn */
gen_op_movuw_rN_T0(REG(B7_4));
gen_op_movuw_rN_T1(REG(B11_8));
gen_op_muluw_T0_T1();
return;
case 0x600b: /* neg Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_neg_T0();
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x600a: /* negc Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_negc_T0();
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x6007: /* not Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_not_T0();
gen_op_movl_T0_rN(REG(B11_8));
return;
case 0x200b: /* or Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_or_T0_rN(REG(B11_8));
return;
case 0x400c: /* shad Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_shad_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x400d: /* shld Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_shld_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x3008: /* sub Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_sub_T0_rN(REG(B11_8));
return;
case 0x300a: /* subc Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_subc_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x300b: /* subv Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_subv_T0_T1();
gen_op_movl_T1_rN(REG(B11_8));
return;
case 0x2008: /* tst Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_tst_T0_T1();
return;
case 0x200a: /* xor Rm,Rn */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_xor_T0_rN(REG(B11_8));
return;
case 0xf00c: /* fmov {F,D,X}Rm,{F,D,X}Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
gen_op_fmov_drN_DT0(XREG(B7_4));
gen_op_fmov_DT0_drN(XREG(B11_8));
} else {
gen_op_fmov_frN_FT0(FREG(B7_4));
gen_op_fmov_FT0_frN(FREG(B11_8));
}
return;
case 0xf00a: /* fmov {F,D,X}Rm,@Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
gen_op_fmov_drN_DT0(XREG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stfq_DT0_T1(ctx);
} else {
gen_op_fmov_frN_FT0(FREG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stfl_FT0_T1(ctx);
}
return;
case 0xf008: /* fmov @Rm,{F,D,X}Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldfq_T0_DT0(ctx);
gen_op_fmov_DT0_drN(XREG(B11_8));
} else {
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldfl_T0_FT0(ctx);
gen_op_fmov_FT0_frN(FREG(B11_8));
}
return;
case 0xf009: /* fmov @Rm+,{F,D,X}Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldfq_T0_DT0(ctx);
gen_op_fmov_DT0_drN(XREG(B11_8));
gen_op_inc8_rN(REG(B7_4));
} else {
gen_op_movl_rN_T0(REG(B7_4));
gen_op_ldfl_T0_FT0(ctx);
gen_op_fmov_FT0_frN(FREG(B11_8));
gen_op_inc4_rN(REG(B7_4));
}
return;
case 0xf00b: /* fmov {F,D,X}Rm,@-Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
gen_op_dec8_rN(REG(B11_8));
gen_op_fmov_drN_DT0(XREG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stfq_DT0_T1(ctx);
} else {
gen_op_dec4_rN(REG(B11_8));
gen_op_fmov_frN_FT0(FREG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stfl_FT0_T1(ctx);
}
return;
case 0xf006: /* fmov @(R0,Rm),{F,D,X}Rm - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
gen_op_movl_rN_T0(REG(B7_4));
gen_op_add_rN_T0(REG(0));
gen_op_ldfq_T0_DT0(ctx);
gen_op_fmov_DT0_drN(XREG(B11_8));
} else {
gen_op_movl_rN_T0(REG(B7_4));
gen_op_add_rN_T0(REG(0));
gen_op_ldfl_T0_FT0(ctx);
gen_op_fmov_FT0_frN(FREG(B11_8));
}
return;
case 0xf007: /* fmov {F,D,X}Rn,@(R0,Rn) - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
gen_op_fmov_drN_DT0(XREG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_add_rN_T1(REG(0));
gen_op_stfq_DT0_T1(ctx);
} else {
gen_op_fmov_frN_FT0(FREG(B7_4));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_add_rN_T1(REG(0));
gen_op_stfl_FT0_T1(ctx);
}
return;
case 0xf000: /* fadd Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */
case 0xf001: /* fsub Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */
case 0xf002: /* fmul Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */
case 0xf003: /* fdiv Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */
case 0xf004: /* fcmp/eq Rm,Rn - FPSCR: R[PR,Enable.V]/W[Cause,Flag] */
case 0xf005: /* fcmp/gt Rm,Rn - FPSCR: R[PR,Enable.V]/W[Cause,Flag] */
if (ctx->fpscr & FPSCR_PR) {
if (ctx->opcode & 0x0110)
break; /* illegal instruction */
gen_op_fmov_drN_DT1(DREG(B7_4));
gen_op_fmov_drN_DT0(DREG(B11_8));
}
else {
gen_op_fmov_frN_FT1(FREG(B7_4));
gen_op_fmov_frN_FT0(FREG(B11_8));
}
switch (ctx->opcode & 0xf00f) {
case 0xf000: /* fadd Rm,Rn */
ctx->fpscr & FPSCR_PR ? gen_op_fadd_DT() : gen_op_fadd_FT();
break;
case 0xf001: /* fsub Rm,Rn */
ctx->fpscr & FPSCR_PR ? gen_op_fsub_DT() : gen_op_fsub_FT();
break;
case 0xf002: /* fmul Rm,Rn */
ctx->fpscr & FPSCR_PR ? gen_op_fmul_DT() : gen_op_fmul_FT();
break;
case 0xf003: /* fdiv Rm,Rn */
ctx->fpscr & FPSCR_PR ? gen_op_fdiv_DT() : gen_op_fdiv_FT();
break;
case 0xf004: /* fcmp/eq Rm,Rn */
ctx->fpscr & FPSCR_PR ? gen_op_fcmp_eq_DT() : gen_op_fcmp_eq_FT();
return;
case 0xf005: /* fcmp/gt Rm,Rn */
ctx->fpscr & FPSCR_PR ? gen_op_fcmp_gt_DT() : gen_op_fcmp_gt_FT();
return;
}
if (ctx->fpscr & FPSCR_PR) {
gen_op_fmov_DT0_drN(DREG(B11_8));
}
else {
gen_op_fmov_FT0_frN(FREG(B11_8));
}
return;
}
switch (ctx->opcode & 0xff00) {
case 0xc900: /* and #imm,R0 */
gen_op_and_imm_rN(B7_0, REG(0));
return;
case 0xcd00: /* and.b #imm,@(R0,GBR) */
gen_op_movl_rN_T0(REG(0));
gen_op_addl_GBR_T0();
gen_op_movl_T0_T1();
gen_op_ldub_T0_T0(ctx);
gen_op_and_imm_T0(B7_0);
gen_op_stb_T0_T1(ctx);
return;
case 0x8b00: /* bf label */
CHECK_NOT_DELAY_SLOT
gen_conditional_jump(ctx, ctx->pc + 2,
ctx->pc + 4 + B7_0s * 2);
ctx->bstate = BS_BRANCH;
return;
case 0x8f00: /* bf/s label */
CHECK_NOT_DELAY_SLOT
gen_op_bf_s(ctx->delayed_pc = ctx->pc + 4 + B7_0s * 2);
ctx->flags |= DELAY_SLOT_CONDITIONAL;
return;
case 0x8900: /* bt label */
CHECK_NOT_DELAY_SLOT
gen_conditional_jump(ctx, ctx->pc + 4 + B7_0s * 2,
ctx->pc + 2);
ctx->bstate = BS_BRANCH;
return;
case 0x8d00: /* bt/s label */
CHECK_NOT_DELAY_SLOT
gen_op_bt_s(ctx->delayed_pc = ctx->pc + 4 + B7_0s * 2);
ctx->flags |= DELAY_SLOT_CONDITIONAL;
return;
case 0x8800: /* cmp/eq #imm,R0 */
gen_op_movl_rN_T0(REG(0));
gen_op_cmp_eq_imm_T0(B7_0s);
return;
case 0xc400: /* mov.b @(disp,GBR),R0 */
gen_op_stc_gbr_T0();
gen_op_addl_imm_T0(B7_0);
gen_op_ldb_T0_T0(ctx);
gen_op_movl_T0_rN(REG(0));
return;
case 0xc500: /* mov.w @(disp,GBR),R0 */
gen_op_stc_gbr_T0();
gen_op_addl_imm_T0(B7_0 * 2);
gen_op_ldw_T0_T0(ctx);
gen_op_movl_T0_rN(REG(0));
return;
case 0xc600: /* mov.l @(disp,GBR),R0 */
gen_op_stc_gbr_T0();
gen_op_addl_imm_T0(B7_0 * 4);
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_rN(REG(0));
return;
case 0xc000: /* mov.b R0,@(disp,GBR) */
gen_op_stc_gbr_T0();
gen_op_addl_imm_T0(B7_0);
gen_op_movl_T0_T1();
gen_op_movl_rN_T0(REG(0));
gen_op_stb_T0_T1(ctx);
return;
case 0xc100: /* mov.w R0,@(disp,GBR) */
gen_op_stc_gbr_T0();
gen_op_addl_imm_T0(B7_0 * 2);
gen_op_movl_T0_T1();
gen_op_movl_rN_T0(REG(0));
gen_op_stw_T0_T1(ctx);
return;
case 0xc200: /* mov.l R0,@(disp,GBR) */
gen_op_stc_gbr_T0();
gen_op_addl_imm_T0(B7_0 * 4);
gen_op_movl_T0_T1();
gen_op_movl_rN_T0(REG(0));
gen_op_stl_T0_T1(ctx);
return;
case 0x8000: /* mov.b R0,@(disp,Rn) */
gen_op_movl_rN_T0(REG(0));
gen_op_movl_rN_T1(REG(B7_4));
gen_op_addl_imm_T1(B3_0);
gen_op_stb_T0_T1(ctx);
return;
case 0x8100: /* mov.w R0,@(disp,Rn) */
gen_op_movl_rN_T0(REG(0));
gen_op_movl_rN_T1(REG(B7_4));
gen_op_addl_imm_T1(B3_0 * 2);
gen_op_stw_T0_T1(ctx);
return;
case 0x8400: /* mov.b @(disp,Rn),R0 */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_addl_imm_T0(B3_0);
gen_op_ldb_T0_T0(ctx);
gen_op_movl_T0_rN(REG(0));
return;
case 0x8500: /* mov.w @(disp,Rn),R0 */
gen_op_movl_rN_T0(REG(B7_4));
gen_op_addl_imm_T0(B3_0 * 2);
gen_op_ldw_T0_T0(ctx);
gen_op_movl_T0_rN(REG(0));
return;
case 0xc700: /* mova @(disp,PC),R0 */
gen_op_movl_imm_rN(((ctx->pc & 0xfffffffc) + 4 + B7_0 * 4) & ~3,
REG(0));
return;
case 0xcb00: /* or #imm,R0 */
gen_op_or_imm_rN(B7_0, REG(0));
return;
case 0xcf00: /* or.b #imm,@(R0,GBR) */
gen_op_movl_rN_T0(REG(0));
gen_op_addl_GBR_T0();
gen_op_movl_T0_T1();
gen_op_ldub_T0_T0(ctx);
gen_op_or_imm_T0(B7_0);
gen_op_stb_T0_T1(ctx);
return;
case 0xc300: /* trapa #imm */
CHECK_NOT_DELAY_SLOT gen_op_movl_imm_PC(ctx->pc);
gen_op_trapa(B7_0);
ctx->bstate = BS_BRANCH;
return;
case 0xc800: /* tst #imm,R0 */
gen_op_tst_imm_rN(B7_0, REG(0));
return;
case 0xcc00: /* tst.b #imm,@(R0,GBR) */
gen_op_movl_rN_T0(REG(0));
gen_op_addl_GBR_T0();
gen_op_ldub_T0_T0(ctx);
gen_op_tst_imm_T0(B7_0);
return;
case 0xca00: /* xor #imm,R0 */
gen_op_xor_imm_rN(B7_0, REG(0));
return;
case 0xce00: /* xor.b #imm,@(R0,GBR) */
gen_op_movl_rN_T0(REG(0));
gen_op_addl_GBR_T0();
gen_op_movl_T0_T1();
gen_op_ldub_T0_T0(ctx);
gen_op_xor_imm_T0(B7_0);
gen_op_stb_T0_T1(ctx);
return;
}
switch (ctx->opcode & 0xf08f) {
case 0x408e: /* ldc Rm,Rn_BANK */
gen_op_movl_rN_rN(REG(B11_8), ALTREG(B6_4));
return;
case 0x4087: /* ldc.l @Rm+,Rn_BANK */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_ldl_T0_T0(ctx);
gen_op_movl_T0_rN(ALTREG(B6_4));
gen_op_inc4_rN(REG(B11_8));
return;
case 0x0082: /* stc Rm_BANK,Rn */
gen_op_movl_rN_rN(ALTREG(B6_4), REG(B11_8));
return;
case 0x4083: /* stc.l Rm_BANK,@-Rn */
gen_op_dec4_rN(REG(B11_8));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_movl_rN_T0(ALTREG(B6_4));
gen_op_stl_T0_T1(ctx);
return;
}
switch (ctx->opcode & 0xf0ff) {
case 0x0023: /* braf Rn */
CHECK_NOT_DELAY_SLOT gen_op_movl_rN_T0(REG(B11_8));
gen_op_braf_T0(ctx->pc + 4);
ctx->flags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
return;
case 0x0003: /* bsrf Rn */
CHECK_NOT_DELAY_SLOT gen_op_movl_rN_T0(REG(B11_8));
gen_op_bsrf_T0(ctx->pc + 4);
ctx->flags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
return;
case 0x4015: /* cmp/pl Rn */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_cmp_pl_T0();
return;
case 0x4011: /* cmp/pz Rn */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_cmp_pz_T0();
return;
case 0x4010: /* dt Rn */
gen_op_dt_rN(REG(B11_8));
return;
case 0x402b: /* jmp @Rn */
CHECK_NOT_DELAY_SLOT gen_op_movl_rN_T0(REG(B11_8));
gen_op_jmp_T0();
ctx->flags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
return;
case 0x400b: /* jsr @Rn */
CHECK_NOT_DELAY_SLOT gen_op_movl_rN_T0(REG(B11_8));
gen_op_jsr_T0(ctx->pc + 4);
ctx->flags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
return;
#define LDST(reg,ldnum,ldpnum,ldop,stnum,stpnum,stop,extrald) \
case ldnum: \
gen_op_movl_rN_T0 (REG(B11_8)); \
gen_op_##ldop##_T0_##reg (); \
extrald \
return; \
case ldpnum: \
gen_op_movl_rN_T0 (REG(B11_8)); \
gen_op_ldl_T0_T0 (ctx); \
gen_op_inc4_rN (REG(B11_8)); \
gen_op_##ldop##_T0_##reg (); \
extrald \
return; \
case stnum: \
gen_op_##stop##_##reg##_T0 (); \
gen_op_movl_T0_rN (REG(B11_8)); \
return; \
case stpnum: \
gen_op_##stop##_##reg##_T0 (); \
gen_op_dec4_rN (REG(B11_8)); \
gen_op_movl_rN_T1 (REG(B11_8)); \
gen_op_stl_T0_T1 (ctx); \
return;
LDST(sr, 0x400e, 0x4007, ldc, 0x0002, 0x4003, stc, ctx->bstate =
BS_STOP;)
LDST(gbr, 0x401e, 0x4017, ldc, 0x0012, 0x4013, stc,)
LDST(vbr, 0x402e, 0x4027, ldc, 0x0022, 0x4023, stc,)
LDST(ssr, 0x403e, 0x4037, ldc, 0x0032, 0x4033, stc,)
LDST(spc, 0x404e, 0x4047, ldc, 0x0042, 0x4043, stc,)
LDST(dbr, 0x40fa, 0x40f6, ldc, 0x00fa, 0x40f2, stc,)
LDST(mach, 0x400a, 0x4006, lds, 0x000a, 0x4002, sts,)
LDST(macl, 0x401a, 0x4016, lds, 0x001a, 0x4012, sts,)
LDST(pr, 0x402a, 0x4026, lds, 0x002a, 0x4022, sts,)
LDST(fpul, 0x405a, 0x4056, lds, 0x005a, 0x4052, sts,)
LDST(fpscr, 0x406a, 0x4066, lds, 0x006a, 0x4062, sts, ctx->bstate =
BS_STOP;)
case 0x00c3: /* movca.l R0,@Rm */
gen_op_movl_rN_T0(REG(0));
gen_op_movl_rN_T1(REG(B11_8));
gen_op_stl_T0_T1(ctx);
return;
case 0x0029: /* movt Rn */
gen_op_movt_rN(REG(B11_8));
return;
case 0x0093: /* ocbi @Rn */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_ldl_T0_T0(ctx);
return;
case 0x00a3: /* ocbp @Rn */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_ldl_T0_T0(ctx);
return;
case 0x00b3: /* ocbwb @Rn */
gen_op_movl_rN_T0(REG(B11_8));
gen_op_ldl_T0_T0(ctx);
return;
case 0x0083: /* pref @Rn */
return;
case 0x4024: /* rotcl Rn */
gen_op_rotcl_Rn(REG(B11_8));
return;
case 0x4025: /* rotcr Rn */
gen_op_rotcr_Rn(REG(B11_8));
return;
case 0x4004: /* rotl Rn */
gen_op_rotl_Rn(REG(B11_8));
return;
case 0x4005: /* rotr Rn */
gen_op_rotr_Rn(REG(B11_8));
return;
case 0x4000: /* shll Rn */
case 0x4020: /* shal Rn */
gen_op_shal_Rn(REG(B11_8));
return;
case 0x4021: /* shar Rn */
gen_op_shar_Rn(REG(B11_8));
return;
case 0x4001: /* shlr Rn */
gen_op_shlr_Rn(REG(B11_8));
return;
case 0x4008: /* shll2 Rn */
gen_op_shll2_Rn(REG(B11_8));
return;
case 0x4018: /* shll8 Rn */
gen_op_shll8_Rn(REG(B11_8));
return;
case 0x4028: /* shll16 Rn */
gen_op_shll16_Rn(REG(B11_8));
return;
case 0x4009: /* shlr2 Rn */
gen_op_shlr2_Rn(REG(B11_8));
return;
case 0x4019: /* shlr8 Rn */
gen_op_shlr8_Rn(REG(B11_8));
return;
case 0x4029: /* shlr16 Rn */
gen_op_shlr16_Rn(REG(B11_8));
return;
case 0x401b: /* tas.b @Rn */
gen_op_tasb_rN(REG(B11_8));
return;
case 0xf00d: /* fsts FPUL,FRn - FPSCR: Nothing */
gen_op_movl_fpul_FT0();
gen_op_fmov_FT0_frN(FREG(B11_8));
return;
case 0xf01d: /* flds FRm,FPUL - FPSCR: Nothing */
gen_op_fmov_frN_FT0(FREG(B11_8));
gen_op_movl_FT0_fpul();
return;
case 0xf02d: /* float FPUL,FRn/DRn - FPSCR: R[PR,Enable.I]/W[Cause,Flag] */
if (ctx->fpscr & FPSCR_PR) {
if (ctx->opcode & 0x0100)
break; /* illegal instruction */
gen_op_float_DT();
gen_op_fmov_DT0_drN(DREG(B11_8));
}
else {
gen_op_float_FT();
gen_op_fmov_FT0_frN(FREG(B11_8));
}
return;
case 0xf03d: /* ftrc FRm/DRm,FPUL - FPSCR: R[PR,Enable.V]/W[Cause,Flag] */
if (ctx->fpscr & FPSCR_PR) {
if (ctx->opcode & 0x0100)
break; /* illegal instruction */
gen_op_fmov_drN_DT0(DREG(B11_8));
gen_op_ftrc_DT();
}
else {
gen_op_fmov_frN_FT0(FREG(B11_8));
gen_op_ftrc_FT();
}
return;
case 0xf04d: /* fneg FRn/DRn - FPSCR: Nothing */
gen_op_fneg_frN(FREG(B11_8));
return;
case 0xf05d: /* fabs FRn/DRn */
if (ctx->fpscr & FPSCR_PR) {
if (ctx->opcode & 0x0100)
break; /* illegal instruction */
gen_op_fmov_drN_DT0(DREG(B11_8));
gen_op_fabs_DT();
gen_op_fmov_DT0_drN(DREG(B11_8));
} else {
gen_op_fmov_frN_FT0(FREG(B11_8));
gen_op_fabs_FT();
gen_op_fmov_FT0_frN(FREG(B11_8));
}
return;
case 0xf06d: /* fsqrt FRn */
if (ctx->fpscr & FPSCR_PR) {
if (ctx->opcode & 0x0100)
break; /* illegal instruction */
gen_op_fmov_drN_DT0(FREG(B11_8));
gen_op_fsqrt_DT();
gen_op_fmov_DT0_drN(FREG(B11_8));
} else {
gen_op_fmov_frN_FT0(FREG(B11_8));
gen_op_fsqrt_FT();
gen_op_fmov_FT0_frN(FREG(B11_8));
}
return;
case 0xf07d: /* fsrra FRn */
break;
case 0xf08d: /* fldi0 FRn - FPSCR: R[PR] */
if (!(ctx->fpscr & FPSCR_PR)) {
gen_op_movl_imm_T0(0);
gen_op_fmov_T0_frN(FREG(B11_8));
return;
}
break;
case 0xf09d: /* fldi1 FRn - FPSCR: R[PR] */
if (!(ctx->fpscr & FPSCR_PR)) {
gen_op_movl_imm_T0(0x3f800000);
gen_op_fmov_T0_frN(FREG(B11_8));
return;
}
break;
case 0xf0ad: /* fcnvsd FPUL,DRn */
gen_op_movl_fpul_FT0();
gen_op_fcnvsd_FT_DT();
gen_op_fmov_DT0_drN(DREG(B11_8));
return;
case 0xf0bd: /* fcnvds DRn,FPUL */
gen_op_fmov_drN_DT0(DREG(B11_8));
gen_op_fcnvds_DT_FT();
gen_op_movl_FT0_fpul();
return;
}
fprintf(stderr, "unknown instruction 0x%04x at pc 0x%08x\n",
ctx->opcode, ctx->pc);
gen_op_raise_illegal_instruction();
ctx->bstate = BS_EXCP;
}
void decode_opc(DisasContext * ctx)
{
uint32_t old_flags = ctx->flags;
_decode_opc(ctx);
if (old_flags & (DELAY_SLOT | DELAY_SLOT_CONDITIONAL)) {
if (ctx->flags & DELAY_SLOT_CLEARME) {
gen_op_store_flags(0);
}
ctx->flags = 0;
ctx->bstate = BS_BRANCH;
if (old_flags & DELAY_SLOT_CONDITIONAL) {
gen_delayed_conditional_jump(ctx);
} else if (old_flags & DELAY_SLOT) {
gen_jump(ctx);
}
}
}
static inline int
gen_intermediate_code_internal(CPUState * env, TranslationBlock * tb,
int search_pc)
{
DisasContext ctx;
target_ulong pc_start;
static uint16_t *gen_opc_end;
int i, ii;
pc_start = tb->pc;
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
ctx.pc = pc_start;
ctx.flags = (uint32_t)tb->flags;
ctx.bstate = BS_NONE;
ctx.sr = env->sr;
ctx.fpscr = env->fpscr;
ctx.memidx = (env->sr & SR_MD) ? 1 : 0;
/* We don't know if the delayed pc came from a dynamic or static branch,
so assume it is a dynamic branch. */
ctx.delayed_pc = -1; /* use delayed pc from env pointer */
ctx.tb = tb;
ctx.singlestep_enabled = env->singlestep_enabled;
#ifdef DEBUG_DISAS
if (loglevel & CPU_LOG_TB_CPU) {
fprintf(logfile,
"------------------------------------------------\n");
cpu_dump_state(env, logfile, fprintf, 0);
}
#endif
ii = -1;
while (ctx.bstate == BS_NONE && gen_opc_ptr < gen_opc_end) {
if (env->nb_breakpoints > 0) {
for (i = 0; i < env->nb_breakpoints; i++) {
if (ctx.pc == env->breakpoints[i]) {
/* We have hit a breakpoint - make sure PC is up-to-date */
gen_op_movl_imm_PC(ctx.pc);
gen_op_debug();
ctx.bstate = BS_EXCP;
break;
}
}
}
if (search_pc) {
i = gen_opc_ptr - gen_opc_buf;
if (ii < i) {
ii++;
while (ii < i)
gen_opc_instr_start[ii++] = 0;
}
gen_opc_pc[ii] = ctx.pc;
gen_opc_hflags[ii] = ctx.flags;
gen_opc_instr_start[ii] = 1;
}
#if 0
fprintf(stderr, "Loading opcode at address 0x%08x\n", ctx.pc);
fflush(stderr);
#endif
ctx.opcode = lduw_code(ctx.pc);
decode_opc(&ctx);
ctx.pc += 2;
if ((ctx.pc & (TARGET_PAGE_SIZE - 1)) == 0)
break;
if (env->singlestep_enabled)
break;
#ifdef SH4_SINGLE_STEP
break;
#endif
}
if (env->singlestep_enabled) {
gen_op_debug();
} else {
switch (ctx.bstate) {
case BS_STOP:
/* gen_op_interrupt_restart(); */
/* fall through */
case BS_NONE:
if (ctx.flags) {
gen_op_store_flags(ctx.flags | DELAY_SLOT_CLEARME);
}
gen_goto_tb(&ctx, 0, ctx.pc);
break;
case BS_EXCP:
/* gen_op_interrupt_restart(); */
tcg_gen_exit_tb(0);
break;
case BS_BRANCH:
default:
break;
}
}
*gen_opc_ptr = INDEX_op_end;
if (search_pc) {
i = gen_opc_ptr - gen_opc_buf;
ii++;
while (ii <= i)
gen_opc_instr_start[ii++] = 0;
} else {
tb->size = ctx.pc - pc_start;
}
#ifdef DEBUG_DISAS
#ifdef SH4_DEBUG_DISAS
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "\n");
#endif
if (loglevel & CPU_LOG_TB_IN_ASM) {
fprintf(logfile, "IN:\n"); /* , lookup_symbol(pc_start)); */
target_disas(logfile, pc_start, ctx.pc - pc_start, 0);
fprintf(logfile, "\n");
}
#endif
return 0;
}
int gen_intermediate_code(CPUState * env, struct TranslationBlock *tb)
{
return gen_intermediate_code_internal(env, tb, 0);
}
int gen_intermediate_code_pc(CPUState * env, struct TranslationBlock *tb)
{
return gen_intermediate_code_internal(env, tb, 1);
}
Reference in New Issue View Git Blame Copy Permalink