Annotation of qemu/dyngen-exec.h, revision 1.1

1.1     ! root        1: /*
        !             2:  *  dyngen defines for micro operation code
        !             3:  *
        !             4:  *  Copyright (c) 2003 Fabrice Bellard
        !             5:  *
        !             6:  * This library is free software; you can redistribute it and/or
        !             7:  * modify it under the terms of the GNU Lesser General Public
        !             8:  * License as published by the Free Software Foundation; either
        !             9:  * version 2 of the License, or (at your option) any later version.
        !            10:  *
        !            11:  * This library is distributed in the hope that it will be useful,
        !            12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            14:  * Lesser General Public License for more details.
        !            15:  *
        !            16:  * You should have received a copy of the GNU Lesser General Public
        !            17:  * License along with this library; if not, write to the Free Software
        !            18:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            19:  */
        !            20: #if !defined(__DYNGEN_EXEC_H__)
        !            21: #define __DYNGEN_EXEC_H__
        !            22: 
        !            23: /* NOTE: standard headers should be used with special care at this
        !            24:    point because host CPU registers are used as global variables. Some
        !            25:    host headers do not allow that. */
        !            26: #include <stddef.h>
        !            27: 
        !            28: typedef unsigned char uint8_t;
        !            29: typedef unsigned short uint16_t;
        !            30: typedef unsigned int uint32_t;
        !            31: /* XXX may be done for all 64 bits targets ? */
        !            32: #if defined (__x86_64__) || defined(__ia64)
        !            33: typedef unsigned long uint64_t;
        !            34: #else
        !            35: typedef unsigned long long uint64_t;
        !            36: #endif
        !            37: 
        !            38: typedef signed char int8_t;
        !            39: typedef signed short int16_t;
        !            40: typedef signed int int32_t;
        !            41: #if defined (__x86_64__) || defined(__ia64)
        !            42: typedef signed long int64_t;
        !            43: #else
        !            44: typedef signed long long int64_t;
        !            45: #endif
        !            46: 
        !            47: #define INT8_MIN               (-128)
        !            48: #define INT16_MIN              (-32767-1)
        !            49: #define INT32_MIN              (-2147483647-1)
        !            50: #define INT64_MIN              (-(int64_t)(9223372036854775807)-1)
        !            51: #define INT8_MAX               (127)
        !            52: #define INT16_MAX              (32767)
        !            53: #define INT32_MAX              (2147483647)
        !            54: #define INT64_MAX              ((int64_t)(9223372036854775807))
        !            55: #define UINT8_MAX              (255)
        !            56: #define UINT16_MAX             (65535)
        !            57: #define UINT32_MAX             (4294967295U)
        !            58: #define UINT64_MAX             ((uint64_t)(18446744073709551615))
        !            59: 
        !            60: typedef struct FILE FILE;
        !            61: extern int fprintf(FILE *, const char *, ...);
        !            62: extern int printf(const char *, ...);
        !            63: #undef NULL
        !            64: #define NULL 0
        !            65: 
        !            66: #ifdef __i386__
        !            67: #define AREG0 "ebp"
        !            68: #define AREG1 "ebx"
        !            69: #define AREG2 "esi"
        !            70: #define AREG3 "edi"
        !            71: #endif
        !            72: #ifdef __x86_64__
        !            73: #define AREG0 "rbp"
        !            74: #define AREG1 "rbx"
        !            75: #define AREG2 "r12"
        !            76: #define AREG3 "r13"
        !            77: //#define AREG4 "r14"
        !            78: //#define AREG5 "r15"
        !            79: #endif
        !            80: #ifdef __powerpc__
        !            81: #define AREG0 "r27"
        !            82: #define AREG1 "r24"
        !            83: #define AREG2 "r25"
        !            84: #define AREG3 "r26"
        !            85: /* XXX: suppress this hack */
        !            86: #if defined(CONFIG_USER_ONLY)
        !            87: #define AREG4 "r16"
        !            88: #define AREG5 "r17"
        !            89: #define AREG6 "r18"
        !            90: #define AREG7 "r19"
        !            91: #define AREG8 "r20"
        !            92: #define AREG9 "r21"
        !            93: #define AREG10 "r22"
        !            94: #define AREG11 "r23"
        !            95: #endif
        !            96: #define USE_INT_TO_FLOAT_HELPERS
        !            97: #define BUGGY_GCC_DIV64
        !            98: #endif
        !            99: #ifdef __arm__
        !           100: #define AREG0 "r7"
        !           101: #define AREG1 "r4"
        !           102: #define AREG2 "r5"
        !           103: #define AREG3 "r6"
        !           104: #endif
        !           105: #ifdef __mips__
        !           106: #define AREG0 "s3"
        !           107: #define AREG1 "s0"
        !           108: #define AREG2 "s1"
        !           109: #define AREG3 "s2"
        !           110: #endif
        !           111: #ifdef __sparc__
        !           112: #define AREG0 "g6"
        !           113: #define AREG1 "g1"
        !           114: #define AREG2 "g2"
        !           115: #define AREG3 "g3"
        !           116: #define AREG4 "l0"
        !           117: #define AREG5 "l1"
        !           118: #define AREG6 "l2"
        !           119: #define AREG7 "l3"
        !           120: #define AREG8 "l4"
        !           121: #define AREG9 "l5"
        !           122: #define AREG10 "l6"
        !           123: #define AREG11 "l7"
        !           124: #define USE_FP_CONVERT
        !           125: #endif
        !           126: #ifdef __s390__
        !           127: #define AREG0 "r10"
        !           128: #define AREG1 "r7"
        !           129: #define AREG2 "r8"
        !           130: #define AREG3 "r9"
        !           131: #endif
        !           132: #ifdef __alpha__
        !           133: /* Note $15 is the frame pointer, so anything in op-i386.c that would
        !           134:    require a frame pointer, like alloca, would probably loose.  */
        !           135: #define AREG0 "$15"
        !           136: #define AREG1 "$9"
        !           137: #define AREG2 "$10"
        !           138: #define AREG3 "$11"
        !           139: #define AREG4 "$12"
        !           140: #define AREG5 "$13"
        !           141: #define AREG6 "$14"
        !           142: #endif
        !           143: #ifdef __mc68000
        !           144: #define AREG0 "%a5"
        !           145: #define AREG1 "%a4"
        !           146: #define AREG2 "%d7"
        !           147: #define AREG3 "%d6"
        !           148: #define AREG4 "%d5"
        !           149: #endif
        !           150: #ifdef __ia64__
        !           151: #define AREG0 "r7"
        !           152: #define AREG1 "r4"
        !           153: #define AREG2 "r5"
        !           154: #define AREG3 "r6"
        !           155: #endif
        !           156: 
        !           157: /* force GCC to generate only one epilog at the end of the function */
        !           158: #define FORCE_RET() asm volatile ("");
        !           159: 
        !           160: #ifndef OPPROTO
        !           161: #define OPPROTO
        !           162: #endif
        !           163: 
        !           164: #define xglue(x, y) x ## y
        !           165: #define glue(x, y) xglue(x, y)
        !           166: #define stringify(s)   tostring(s)
        !           167: #define tostring(s)    #s
        !           168: 
        !           169: #ifdef __alpha__
        !           170: /* the symbols are considered non exported so a br immediate is generated */
        !           171: #define __hidden __attribute__((visibility("hidden")))
        !           172: #else
        !           173: #define __hidden 
        !           174: #endif
        !           175: 
        !           176: #if defined(__alpha__)
        !           177: /* Suggested by Richard Henderson. This will result in code like
        !           178:         ldah $0,__op_param1($29)        !gprelhigh
        !           179:         lda $0,__op_param1($0)          !gprellow
        !           180:    We can then conveniently change $29 to $31 and adapt the offsets to
        !           181:    emit the appropriate constant.  */
        !           182: extern int __op_param1 __hidden;
        !           183: extern int __op_param2 __hidden;
        !           184: extern int __op_param3 __hidden;
        !           185: #define PARAM1 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param1)); _r; })
        !           186: #define PARAM2 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param2)); _r; })
        !           187: #define PARAM3 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param3)); _r; })
        !           188: #else
        !           189: #if defined(__APPLE__)
        !           190: static int __op_param1, __op_param2, __op_param3;
        !           191: #else
        !           192: extern int __op_param1, __op_param2, __op_param3;
        !           193: #endif
        !           194: #define PARAM1 ((long)(&__op_param1))
        !           195: #define PARAM2 ((long)(&__op_param2))
        !           196: #define PARAM3 ((long)(&__op_param3))
        !           197: #endif /* !defined(__alpha__) */
        !           198: 
        !           199: extern int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
        !           200: 
        !           201: #if defined(_WIN32) || defined(__APPLE__)
        !           202: #define ASM_NAME(x) "_" #x
        !           203: #else
        !           204: #define ASM_NAME(x) #x
        !           205: #endif
        !           206: 
        !           207: #ifdef __i386__
        !           208: #define EXIT_TB() asm volatile ("ret")
        !           209: #define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
        !           210: #endif
        !           211: #ifdef __x86_64__
        !           212: #define EXIT_TB() asm volatile ("ret")
        !           213: #define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
        !           214: #endif
        !           215: #ifdef __powerpc__
        !           216: #define EXIT_TB() asm volatile ("blr")
        !           217: #define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
        !           218: #endif
        !           219: #ifdef __s390__
        !           220: #define EXIT_TB() asm volatile ("br %r14")
        !           221: #define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
        !           222: #endif
        !           223: #ifdef __alpha__
        !           224: #define EXIT_TB() asm volatile ("ret")
        !           225: #endif
        !           226: #ifdef __ia64__
        !           227: #define EXIT_TB() asm volatile ("br.ret.sptk.many b0;;")
        !           228: #define GOTO_LABEL_PARAM(n) asm volatile ("br.sptk.many " \
        !           229:                                          ASM_NAME(__op_gen_label) #n)
        !           230: #endif
        !           231: #ifdef __sparc__
        !           232: #define EXIT_TB() asm volatile ("jmpl %i0 + 8, %g0\n" \
        !           233:                                 "nop")
        !           234: #endif
        !           235: #ifdef __arm__
        !           236: #define EXIT_TB() asm volatile ("b exec_loop")
        !           237: #define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
        !           238: #endif
        !           239: #ifdef __mc68000
        !           240: #define EXIT_TB() asm volatile ("rts")
        !           241: #endif
        !           242: 
        !           243: #endif /* !defined(__DYNGEN_EXEC_H__) */

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