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/*

 *  dyngen defines for micro operation code

 *

 *  Copyright (c) 2003 Fabrice Bellard

 *

 * 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

 */

#if !defined(__DYNGEN_EXEC_H__)

#define __DYNGEN_EXEC_H__

/* prevent Solaris from trying to typedef FILE in gcc's

   include/floatingpoint.h which will conflict with the

   definition down below */

#ifdef __sun__

#define _FILEDEFED

#endif

/* NOTE: standard headers should be used with special care at this

   point because host CPU registers are used as global variables. Some

   host headers do not allow that. */

#include <stddef.h>

typedef unsigned char uint8_t;

typedef unsigned short uint16_t;

typedef unsigned int uint32_t;

// Linux/Sparc64 defines uint64_t

#if !(defined (__sparc_v9__) && defined(__linux__))

/* XXX may be done for all 64 bits targets ? */

#if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__) 

typedef unsigned long uint64_t;

#else

typedef unsigned long long uint64_t;

#endif

#endif

/* if Solaris/__sun__, don't typedef int8_t, as it will be typedef'd

   prior to this and will cause an error in compliation, conflicting

   with /usr/include/sys/int_types.h, line 75 */

#ifndef __sun__

typedef signed char int8_t;

#endif

typedef signed short int16_t;

typedef signed int int32_t;

// Linux/Sparc64 defines int64_t

#if !(defined (__sparc_v9__) && defined(__linux__))

#if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__)

typedef signed long int64_t;

#else

typedef signed long long int64_t;

#endif

#endif

/* XXX: This may be wrong for 64-bit ILP32 hosts.  */

typedef void * host_reg_t;

#define INT8_MIN                (-128)

#define INT16_MIN                (-32767-1)

#define INT32_MIN                (-2147483647-1)

#define INT64_MIN                (-(int64_t)(9223372036854775807)-1)

#define INT8_MAX                (127)

#define INT16_MAX                (32767)

#define INT32_MAX                (2147483647)

#define INT64_MAX                ((int64_t)(9223372036854775807))

#define UINT8_MAX                (255)

#define UINT16_MAX                (65535)

#define UINT32_MAX                (4294967295U)

#define UINT64_MAX                ((uint64_t)(18446744073709551615))

#ifdef _BSD

typedef struct __sFILE FILE;

#else

typedef struct FILE FILE;

#endif

extern int fprintf(FILE *, const char *, ...);

extern int fputs(const char *, FILE *);

extern int printf(const char *, ...);

#undef NULL

#define NULL 0

#if defined(__i386__)

#define AREG0 "ebp"

#define AREG1 "ebx"

#define AREG2 "esi"

#define AREG3 "edi"

#elif defined(__x86_64__)

#define AREG0 "r14"

#define AREG1 "r15"

#define AREG2 "r12"

#define AREG3 "r13"

//#define AREG4 "rbp"

//#define AREG5 "rbx"

#elif defined(__powerpc__)

#define AREG0 "r27"

#define AREG1 "r24"

#define AREG2 "r25"

#define AREG3 "r26"

/* XXX: suppress this hack */

#if defined(CONFIG_USER_ONLY)

#define AREG4 "r16"

#define AREG5 "r17"

#define AREG6 "r18"

#define AREG7 "r19"

#define AREG8 "r20"

#define AREG9 "r21"

#define AREG10 "r22"

#define AREG11 "r23"

#endif

#elif defined(__arm__)

#define AREG0 "r7"

#define AREG1 "r4"

#define AREG2 "r5"

#define AREG3 "r6"

#elif defined(__hppa__)

#define AREG0 "r17"

#define AREG1 "r14"

#define AREG2 "r15"

#define AREG3 "r16"

#elif defined(__mips__)

#define AREG0 "fp"

#define AREG1 "s0"

#define AREG2 "s1"

#define AREG3 "s2"

#define AREG4 "s3"

#define AREG5 "s4"

#define AREG6 "s5"

#define AREG7 "s6"

#define AREG8 "s7"

#elif defined(__sparc__)

#ifdef HOST_SOLARIS

#define AREG0 "g2"

#define AREG1 "g3"

#define AREG2 "g4"

#define AREG3 "g5"

#define AREG4 "g6"

#else

#ifdef __sparc_v9__

#define AREG0 "g1"

#define AREG1 "g4"

#define AREG2 "g5"

#define AREG3 "g7"

#else

#define AREG0 "g6"

#define AREG1 "g1"

#define AREG2 "g2"

#define AREG3 "g3"

#define AREG4 "l0"

#define AREG5 "l1"

#define AREG6 "l2"

#define AREG7 "l3"

#define AREG8 "l4"

#define AREG9 "l5"

#define AREG10 "l6"

#define AREG11 "l7"

#endif

#endif

#elif defined(__s390__)

#define AREG0 "r10"

#define AREG1 "r7"

#define AREG2 "r8"

#define AREG3 "r9"

#elif defined(__alpha__)

/* Note $15 is the frame pointer, so anything in op-i386.c that would

   require a frame pointer, like alloca, would probably loose.  */

#define AREG0 "$15"

#define AREG1 "$9"

#define AREG2 "$10"

#define AREG3 "$11"

#define AREG4 "$12"

#define AREG5 "$13"

#define AREG6 "$14"

#elif defined(__mc68000)

#define AREG0 "%a5"

#define AREG1 "%a4"

#define AREG2 "%d7"

#define AREG3 "%d6"

#define AREG4 "%d5"

#elif defined(__ia64__)

#define AREG0 "r7"

#define AREG1 "r4"

#define AREG2 "r5"

#define AREG3 "r6"

#else

#error unsupported CPU

#endif

/* force GCC to generate only one epilog at the end of the function */

#define FORCE_RET() __asm__ __volatile__("" : : : "memory");

#ifndef OPPROTO

#define OPPROTO

#endif

#define xglue(x, y) x ## y

#define glue(x, y) xglue(x, y)

#define stringify(s)        tostring(s)

#define tostring(s)        #s

#if defined(__alpha__) || defined(__s390__)

/* the symbols are considered non exported so a br immediate is generated */

#define __hidden __attribute__((visibility("hidden")))

#else

#define __hidden

#endif

#if defined(__alpha__)

/* Suggested by Richard Henderson. This will result in code like

        ldah $0,__op_param1($29)        !gprelhigh

        lda $0,__op_param1($0)          !gprellow

   We can then conveniently change $29 to $31 and adapt the offsets to

   emit the appropriate constant.  */

extern int __op_param1 __hidden;

extern int __op_param2 __hidden;

extern int __op_param3 __hidden;

#define PARAM1 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param1)); _r; })

#define PARAM2 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param2)); _r; })

#define PARAM3 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param3)); _r; })

#elif defined(__s390__)

extern int __op_param1 __hidden;

extern int __op_param2 __hidden;

extern int __op_param3 __hidden;

#define PARAM1 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param1) "; l %0,0(%0)" : "=r"(_r) : ); _r; })

#define PARAM2 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param2) "; l %0,0(%0)" : "=r"(_r) : ); _r; })

#define PARAM3 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param3) "; l %0,0(%0)" : "=r"(_r) : ); _r; })

#else

#if defined(__APPLE__)

static int __op_param1, __op_param2, __op_param3;

#else

extern int __op_param1, __op_param2, __op_param3;

#endif

#define PARAM1 ((long)(&__op_param1))

#define PARAM2 ((long)(&__op_param2))

#define PARAM3 ((long)(&__op_param3))

#endif /* !defined(__alpha__) */

extern int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;

#if defined(_WIN32) || defined(__APPLE__)

#define ASM_NAME(x) "_" #x

#else

#define ASM_NAME(x) #x

#endif

#if defined(__i386__)

#define EXIT_TB() asm volatile ("ret")

#define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)

#elif defined(__x86_64__)

#define EXIT_TB() asm volatile ("ret")

#define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)

#elif defined(__powerpc__)

#define EXIT_TB() asm volatile ("blr")

#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)

#elif defined(__s390__)

#define EXIT_TB() asm volatile ("br %r14")

#define GOTO_LABEL_PARAM(n) asm volatile ("larl %r7,12; l %r7,0(%r7); br %r7; .long " ASM_NAME(__op_gen_label) #n)

#elif defined(__alpha__)

#define EXIT_TB() asm volatile ("ret")

#elif defined(__ia64__)

#define EXIT_TB() asm volatile ("br.ret.sptk.many b0;;")

#define GOTO_LABEL_PARAM(n) asm volatile ("br.sptk.many " \

                                          ASM_NAME(__op_gen_label) #n)

#elif defined(__sparc__)

#define EXIT_TB() asm volatile ("jmpl %i0 + 8, %g0; nop")

#define GOTO_LABEL_PARAM(n) asm volatile ("ba " ASM_NAME(__op_gen_label) #n ";nop")

#elif defined(__arm__)

#define EXIT_TB() asm volatile ("b exec_loop")

#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)

#elif defined(__mc68000)

#define EXIT_TB() asm volatile ("rts")

#elif defined(__mips__)

#define EXIT_TB() asm volatile ("jr $ra")

#define GOTO_LABEL_PARAM(n) asm volatile (".set noat; la $1, " ASM_NAME(__op_gen_label) #n "; jr $1; .set at")

#elif defined(__hppa__)

#define GOTO_LABEL_PARAM(n) asm volatile ("b,n " ASM_NAME(__op_gen_label) #n)

#else

#error unsupported CPU

#endif

/* The return address may point to the start of the next instruction.

   Subtracting one gets us the call instruction itself.  */

#if defined(__s390__)

# define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))

#elif defined(__arm__)

/* Thumb return addresses have the low bit set, so we need to subtract two.

   This is still safe in ARM mode because instructions are 4 bytes.  */

# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))

#else

# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))

#endif

#endif /* !defined(__DYNGEN_EXEC_H__) */