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target-m68k: define operand sizes

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Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Laurent Vivier 2015-08-09 01:12:46 +02:00
parent 4d558f5d58
commit 7ef25cdd6c
2 changed files with 23 additions and 32 deletions
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8
target-m68k/cpu.h
View File

@ -30,6 +30,14 @@
#include "cpu-qom.h"
#include "fpu/softfloat.h"
#define OS_BYTE 0
#define OS_WORD 1
#define OS_LONG 2
#define OS_SINGLE 3
#define OS_DOUBLE 4
#define OS_EXTENDED 5
#define OS_PACKED 6
#define MAX_QREGS 32
#define EXCP_ACCESS 2 /* Access (MMU) error. */

47
target-m68k/translate.c
View File

@ -154,12 +154,6 @@ typedef struct DisasContext {
static void *gen_throws_exception;
#define gen_last_qop NULL
#define OS_BYTE 0
#define OS_WORD 1
#define OS_LONG 2
#define OS_SINGLE 4
#define OS_DOUBLE 5
typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn);
#ifdef DEBUG_DISPATCH
@ -453,6 +447,19 @@ static inline int opsize_bytes(int opsize)
case OS_LONG: return 4;
case OS_SINGLE: return 4;
case OS_DOUBLE: return 8;
case OS_EXTENDED: return 12;
case OS_PACKED: return 12;
default:
g_assert_not_reached();
}
}
static inline int insn_opsize(int insn)
{
switch ((insn >> 6) & 3) {
case 0: return OS_BYTE;
case 1: return OS_WORD;
case 2: return OS_LONG;
default:
g_assert_not_reached();
}
@ -1330,19 +1337,7 @@ DISAS_INSN(clr)
{
int opsize;
switch ((insn >> 6) & 3) {
case 0: /* clr.b */
opsize = OS_BYTE;
break;
case 1: /* clr.w */
opsize = OS_WORD;
break;
case 2: /* clr.l */
opsize = OS_LONG;
break;
default:
abort();
}
opsize = insn_opsize(insn);
DEST_EA(env, insn, opsize, tcg_const_i32(0), NULL);
gen_logic_cc(s, tcg_const_i32(0));
}
@ -1486,19 +1481,7 @@ DISAS_INSN(tst)
int opsize;
TCGv tmp;
switch ((insn >> 6) & 3) {
case 0: /* tst.b */
opsize = OS_BYTE;
break;
case 1: /* tst.w */
opsize = OS_WORD;
break;
case 2: /* tst.l */
opsize = OS_LONG;
break;
default:
abort();
}
opsize = insn_opsize(insn);
SRC_EA(env, tmp, opsize, 1, NULL);
gen_logic_cc(s, tmp);
}