xref: /qemu/tcg/tci/tcg-target.h (revision d7156f7ce4581c874df4a27409e7d99873faa413) 
17316329aSStefan Weil /*
27316329aSStefan Weil  * Tiny Code Generator for QEMU
37316329aSStefan Weil  *
47316329aSStefan Weil  * Copyright (c) 2009, 2011 Stefan Weil
57316329aSStefan Weil  *
67316329aSStefan Weil  * Permission is hereby granted, free of charge, to any person obtaining a copy
77316329aSStefan Weil  * of this software and associated documentation files (the "Software"), to deal
87316329aSStefan Weil  * in the Software without restriction, including without limitation the rights
97316329aSStefan Weil  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
107316329aSStefan Weil  * copies of the Software, and to permit persons to whom the Software is
117316329aSStefan Weil  * furnished to do so, subject to the following conditions:
127316329aSStefan Weil  *
137316329aSStefan Weil  * The above copyright notice and this permission notice shall be included in
147316329aSStefan Weil  * all copies or substantial portions of the Software.
157316329aSStefan Weil  *
167316329aSStefan Weil  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
177316329aSStefan Weil  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
187316329aSStefan Weil  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
197316329aSStefan Weil  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
207316329aSStefan Weil  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
217316329aSStefan Weil  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
227316329aSStefan Weil  * THE SOFTWARE.
237316329aSStefan Weil  */
247316329aSStefan Weil 
257316329aSStefan Weil /*
267316329aSStefan Weil  * This code implements a TCG which does not generate machine code for some
277316329aSStefan Weil  * real target machine but which generates virtual machine code for an
287316329aSStefan Weil  * interpreter. Interpreted pseudo code is slow, but it works on any host.
297316329aSStefan Weil  *
307316329aSStefan Weil  * Some remarks might help in understanding the code:
317316329aSStefan Weil  *
327316329aSStefan Weil  * "target" or "TCG target" is the machine which runs the generated code.
337316329aSStefan Weil  * This is different to the usual meaning in QEMU where "target" is the
347316329aSStefan Weil  * emulated machine. So normally QEMU host is identical to TCG target.
357316329aSStefan Weil  * Here the TCG target is a virtual machine, but this virtual machine must
367316329aSStefan Weil  * use the same word size like the real machine.
377316329aSStefan Weil  * Therefore, we need both 32 and 64 bit virtual machines (interpreter).
387316329aSStefan Weil  */
397316329aSStefan Weil 
407316329aSStefan Weil #if !defined(TCG_TARGET_H)
417316329aSStefan Weil #define TCG_TARGET_H
427316329aSStefan Weil 
437316329aSStefan Weil #include "config-host.h"
447316329aSStefan Weil 
457316329aSStefan Weil #define TCG_TARGET_INTERPRETER 1
467316329aSStefan Weil 
477316329aSStefan Weil #ifdef CONFIG_DEBUG_TCG
487316329aSStefan Weil /* Enable debug output. */
497316329aSStefan Weil #define CONFIG_DEBUG_TCG_INTERPRETER
507316329aSStefan Weil #endif
517316329aSStefan Weil 
527316329aSStefan Weil #if 0 /* TCI tries to emulate a little endian host. */
537316329aSStefan Weil #if defined(HOST_WORDS_BIGENDIAN)
547316329aSStefan Weil # define TCG_TARGET_WORDS_BIGENDIAN
557316329aSStefan Weil #endif
567316329aSStefan Weil #endif
577316329aSStefan Weil 
587316329aSStefan Weil /* Optional instructions. */
597316329aSStefan Weil 
607316329aSStefan Weil #define TCG_TARGET_HAS_bswap16_i32      1
617316329aSStefan Weil #define TCG_TARGET_HAS_bswap32_i32      1
627316329aSStefan Weil /* Not more than one of the next two defines must be 1. */
637316329aSStefan Weil #define TCG_TARGET_HAS_div_i32          1
647316329aSStefan Weil #define TCG_TARGET_HAS_div2_i32         0
657316329aSStefan Weil #define TCG_TARGET_HAS_ext8s_i32        1
667316329aSStefan Weil #define TCG_TARGET_HAS_ext16s_i32       1
677316329aSStefan Weil #define TCG_TARGET_HAS_ext8u_i32        1
687316329aSStefan Weil #define TCG_TARGET_HAS_ext16u_i32       1
697316329aSStefan Weil #define TCG_TARGET_HAS_andc_i32         0
70e24dc9feSStefan Weil #define TCG_TARGET_HAS_deposit_i32      1
717316329aSStefan Weil #define TCG_TARGET_HAS_eqv_i32          0
727316329aSStefan Weil #define TCG_TARGET_HAS_nand_i32         0
737316329aSStefan Weil #define TCG_TARGET_HAS_nor_i32          0
747316329aSStefan Weil #define TCG_TARGET_HAS_neg_i32          1
757316329aSStefan Weil #define TCG_TARGET_HAS_not_i32          1
767316329aSStefan Weil #define TCG_TARGET_HAS_orc_i32          0
777316329aSStefan Weil #define TCG_TARGET_HAS_rot_i32          1
78ffc5ea09SRichard Henderson #define TCG_TARGET_HAS_movcond_i32      0
797316329aSStefan Weil 
807316329aSStefan Weil #if TCG_TARGET_REG_BITS == 64
817316329aSStefan Weil #define TCG_TARGET_HAS_bswap16_i64      1
827316329aSStefan Weil #define TCG_TARGET_HAS_bswap32_i64      1
837316329aSStefan Weil #define TCG_TARGET_HAS_bswap64_i64      1
84e24dc9feSStefan Weil #define TCG_TARGET_HAS_deposit_i64      1
857316329aSStefan Weil /* Not more than one of the next two defines must be 1. */
867316329aSStefan Weil #define TCG_TARGET_HAS_div_i64          0
877316329aSStefan Weil #define TCG_TARGET_HAS_div2_i64         0
887316329aSStefan Weil #define TCG_TARGET_HAS_ext8s_i64        1
897316329aSStefan Weil #define TCG_TARGET_HAS_ext16s_i64       1
907316329aSStefan Weil #define TCG_TARGET_HAS_ext32s_i64       1
917316329aSStefan Weil #define TCG_TARGET_HAS_ext8u_i64        1
927316329aSStefan Weil #define TCG_TARGET_HAS_ext16u_i64       1
937316329aSStefan Weil #define TCG_TARGET_HAS_ext32u_i64       1
947316329aSStefan Weil #define TCG_TARGET_HAS_andc_i64         0
957316329aSStefan Weil #define TCG_TARGET_HAS_eqv_i64          0
967316329aSStefan Weil #define TCG_TARGET_HAS_nand_i64         0
977316329aSStefan Weil #define TCG_TARGET_HAS_nor_i64          0
987316329aSStefan Weil #define TCG_TARGET_HAS_neg_i64          1
997316329aSStefan Weil #define TCG_TARGET_HAS_not_i64          1
1007316329aSStefan Weil #define TCG_TARGET_HAS_orc_i64          0
1017316329aSStefan Weil #define TCG_TARGET_HAS_rot_i64          1
102ffc5ea09SRichard Henderson #define TCG_TARGET_HAS_movcond_i64      0
103e6a72734SRichard Henderson 
104e6a72734SRichard Henderson #define TCG_TARGET_HAS_add2_i32         0
105e6a72734SRichard Henderson #define TCG_TARGET_HAS_sub2_i32         0
106e6a72734SRichard Henderson #define TCG_TARGET_HAS_mulu2_i32        0
107*d7156f7cSRichard Henderson #define TCG_TARGET_HAS_add2_i64         0
108*d7156f7cSRichard Henderson #define TCG_TARGET_HAS_sub2_i64         0
109*d7156f7cSRichard Henderson #define TCG_TARGET_HAS_mulu2_i64        0
1107316329aSStefan Weil #endif /* TCG_TARGET_REG_BITS == 64 */
1117316329aSStefan Weil 
1127316329aSStefan Weil /* Number of registers available.
1137316329aSStefan Weil    For 32 bit hosts, we need more than 8 registers (call arguments). */
1147316329aSStefan Weil /* #define TCG_TARGET_NB_REGS 8 */
1157316329aSStefan Weil #define TCG_TARGET_NB_REGS 16
1167316329aSStefan Weil /* #define TCG_TARGET_NB_REGS 32 */
1177316329aSStefan Weil 
1187316329aSStefan Weil /* List of registers which are used by TCG. */
1197316329aSStefan Weil typedef enum {
1207316329aSStefan Weil     TCG_REG_R0 = 0,
1217316329aSStefan Weil     TCG_REG_R1,
1227316329aSStefan Weil     TCG_REG_R2,
1237316329aSStefan Weil     TCG_REG_R3,
1247316329aSStefan Weil     TCG_REG_R4,
1257316329aSStefan Weil     TCG_REG_R5,
1267316329aSStefan Weil     TCG_REG_R6,
1277316329aSStefan Weil     TCG_REG_R7,
1287316329aSStefan Weil     TCG_AREG0 = TCG_REG_R7,
1297316329aSStefan Weil #if TCG_TARGET_NB_REGS >= 16
1307316329aSStefan Weil     TCG_REG_R8,
1317316329aSStefan Weil     TCG_REG_R9,
1327316329aSStefan Weil     TCG_REG_R10,
1337316329aSStefan Weil     TCG_REG_R11,
1347316329aSStefan Weil     TCG_REG_R12,
1357316329aSStefan Weil     TCG_REG_R13,
1367316329aSStefan Weil     TCG_REG_R14,
1377316329aSStefan Weil     TCG_REG_R15,
1387316329aSStefan Weil #if TCG_TARGET_NB_REGS >= 32
1397316329aSStefan Weil     TCG_REG_R16,
1407316329aSStefan Weil     TCG_REG_R17,
1417316329aSStefan Weil     TCG_REG_R18,
1427316329aSStefan Weil     TCG_REG_R19,
1437316329aSStefan Weil     TCG_REG_R20,
1447316329aSStefan Weil     TCG_REG_R21,
1457316329aSStefan Weil     TCG_REG_R22,
1467316329aSStefan Weil     TCG_REG_R23,
1477316329aSStefan Weil     TCG_REG_R24,
1487316329aSStefan Weil     TCG_REG_R25,
1497316329aSStefan Weil     TCG_REG_R26,
1507316329aSStefan Weil     TCG_REG_R27,
1517316329aSStefan Weil     TCG_REG_R28,
1527316329aSStefan Weil     TCG_REG_R29,
1537316329aSStefan Weil     TCG_REG_R30,
1547316329aSStefan Weil     TCG_REG_R31,
1557316329aSStefan Weil #endif
1567316329aSStefan Weil #endif
1577316329aSStefan Weil     /* Special value UINT8_MAX is used by TCI to encode constant values. */
1587316329aSStefan Weil     TCG_CONST = UINT8_MAX
159771142c2SRichard Henderson } TCGReg;
1607316329aSStefan Weil 
1617316329aSStefan Weil void tci_disas(uint8_t opc);
1627316329aSStefan Weil 
16369784eaeSStefan Weil tcg_target_ulong tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr);
1647316329aSStefan Weil #define tcg_qemu_tb_exec tcg_qemu_tb_exec
1657316329aSStefan Weil 
166f57a5160SStefan Weil static inline void flush_icache_range(tcg_target_ulong start,
167f57a5160SStefan Weil                                       tcg_target_ulong stop)
16851711aeeSStefan Weil {
16951711aeeSStefan Weil }
17051711aeeSStefan Weil 
1717316329aSStefan Weil #endif /* TCG_TARGET_H */
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