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target-m68k: define operand sizes
Backports commit 7ef25cdd6cee4fa468d6cb913fa064a6689faf7d from qemu
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2653165c63
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292fc83c86
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@ -32,6 +32,14 @@
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#include "fpu/softfloat.h"
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#define OS_BYTE 0
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#define OS_WORD 1
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#define OS_LONG 2
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#define OS_SINGLE 3
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#define OS_DOUBLE 4
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#define OS_EXTENDED 5
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#define OS_PACKED 6
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#define MAX_QREGS 32
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#define EXCP_ACCESS 2 /* Access (MMU) error. */
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@ -124,12 +124,6 @@ typedef struct DisasContext {
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#define IS_USER(s) s->user
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#endif
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#define OS_BYTE 0
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#define OS_WORD 1
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#define OS_LONG 2
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#define OS_SINGLE 4
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#define OS_DOUBLE 5
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typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn);
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#ifdef DEBUG_DISPATCH
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@ -429,6 +423,8 @@ static inline int opsize_bytes(int opsize)
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case OS_LONG: return 4;
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case OS_SINGLE: return 4;
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case OS_DOUBLE: return 8;
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case OS_EXTENDED: return 12;
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case OS_PACKED: return 12;
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default:
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g_assert_not_reached();
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return 0;
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@ -437,6 +433,18 @@ static inline int opsize_bytes(int opsize)
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return 0;
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}
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static inline int insn_opsize(int insn)
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{
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switch ((insn >> 6) & 3) {
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case 0: return OS_BYTE;
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case 1: return OS_WORD;
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case 2: return OS_LONG;
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default:
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g_assert_not_reached();
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return 0;
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}
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}
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/* Assign value to a register. If the width is less than the register width
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only the low part of the register is set. */
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static void gen_partset_reg(DisasContext *s, int opsize, TCGv reg, TCGv val)
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@ -1338,19 +1346,7 @@ DISAS_INSN(clr)
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TCGContext *tcg_ctx = s->uc->tcg_ctx;
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int opsize;
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switch ((insn >> 6) & 3) {
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case 0: /* clr.b */
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opsize = OS_BYTE;
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break;
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case 1: /* clr.w */
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opsize = OS_WORD;
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break;
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case 2: /* clr.l */
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opsize = OS_LONG;
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break;
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default:
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abort();
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}
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opsize = insn_opsize(insn);
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DEST_EA(env, insn, opsize, tcg_const_i32(tcg_ctx, 0), NULL);
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gen_logic_cc(s, tcg_const_i32(tcg_ctx, 0));
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}
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@ -1504,19 +1500,7 @@ DISAS_INSN(tst)
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int opsize;
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TCGv tmp;
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switch ((insn >> 6) & 3) {
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case 0: /* tst.b */
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opsize = OS_BYTE;
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break;
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case 1: /* tst.w */
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opsize = OS_WORD;
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break;
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case 2: /* tst.l */
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opsize = OS_LONG;
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break;
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default:
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abort();
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}
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opsize = insn_opsize(insn);
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SRC_EA(env, tmp, opsize, 1, NULL);
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gen_logic_cc(s, tmp);
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}
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