mirror of https://gitee.com/openkylin/qemu.git
306 lines
9.3 KiB
C
306 lines
9.3 KiB
C
/*
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* dyngen defines for micro operation code
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#if !defined(__DYNGEN_EXEC_H__)
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#define __DYNGEN_EXEC_H__
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/* prevent Solaris from trying to typedef FILE in gcc's
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include/floatingpoint.h which will conflict with the
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definition down below */
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#ifdef __sun__
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#define _FILEDEFED
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#endif
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/* NOTE: standard headers should be used with special care at this
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point because host CPU registers are used as global variables. Some
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host headers do not allow that. */
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#include <stddef.h>
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#ifdef __OpenBSD__
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#include <sys/types.h>
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#else
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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// Linux/Sparc64 defines uint64_t
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#if !(defined (__sparc_v9__) && defined(__linux__)) && !(defined(__APPLE__) && defined(__x86_64__))
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/* XXX may be done for all 64 bits targets ? */
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#if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__) || defined(__powerpc64__)
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typedef unsigned long uint64_t;
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#else
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typedef unsigned long long uint64_t;
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#endif
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#endif
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/* if Solaris/__sun__, don't typedef int8_t, as it will be typedef'd
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prior to this and will cause an error in compliation, conflicting
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with /usr/include/sys/int_types.h, line 75 */
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#ifndef __sun__
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typedef signed char int8_t;
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#endif
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typedef signed short int16_t;
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typedef signed int int32_t;
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// Linux/Sparc64 defines int64_t
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#if !(defined (__sparc_v9__) && defined(__linux__)) && !(defined(__APPLE__) && defined(__x86_64__))
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#if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__) || defined(__powerpc64__)
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typedef signed long int64_t;
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#else
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typedef signed long long int64_t;
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#endif
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#endif
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#endif
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/* XXX: This may be wrong for 64-bit ILP32 hosts. */
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typedef void * host_reg_t;
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#define INT8_MIN (-128)
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#define INT16_MIN (-32767-1)
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#define INT32_MIN (-2147483647-1)
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#define INT64_MIN (-(int64_t)(9223372036854775807)-1)
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#define INT8_MAX (127)
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#define INT16_MAX (32767)
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#define INT32_MAX (2147483647)
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#define INT64_MAX ((int64_t)(9223372036854775807))
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#define UINT8_MAX (255)
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#define UINT16_MAX (65535)
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#define UINT32_MAX (4294967295U)
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#define UINT64_MAX ((uint64_t)(18446744073709551615))
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#ifdef _BSD
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typedef struct __sFILE FILE;
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#else
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typedef struct FILE FILE;
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#endif
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extern int fprintf(FILE *, const char *, ...);
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extern int fputs(const char *, FILE *);
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extern int printf(const char *, ...);
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#undef NULL
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#define NULL 0
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#if defined(__i386__)
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#define AREG0 "ebp"
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#define AREG1 "ebx"
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#define AREG2 "esi"
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#define AREG3 "edi"
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#elif defined(__x86_64__)
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#define AREG0 "r14"
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#define AREG1 "r15"
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#define AREG2 "r12"
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#define AREG3 "r13"
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//#define AREG4 "rbp"
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//#define AREG5 "rbx"
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#elif defined(__powerpc__)
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#define AREG0 "r27"
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#define AREG1 "r24"
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#define AREG2 "r25"
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#define AREG3 "r26"
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/* XXX: suppress this hack */
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#if defined(CONFIG_USER_ONLY)
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#define AREG4 "r16"
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#define AREG5 "r17"
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#define AREG6 "r18"
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#define AREG7 "r19"
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#define AREG8 "r20"
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#define AREG9 "r21"
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#define AREG10 "r22"
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#define AREG11 "r23"
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#endif
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#elif defined(__arm__)
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#define AREG0 "r7"
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#define AREG1 "r4"
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#define AREG2 "r5"
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#define AREG3 "r6"
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#elif defined(__hppa__)
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#define AREG0 "r17"
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#define AREG1 "r14"
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#define AREG2 "r15"
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#define AREG3 "r16"
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#elif defined(__mips__)
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#define AREG0 "fp"
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#define AREG1 "s0"
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#define AREG2 "s1"
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#define AREG3 "s2"
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#define AREG4 "s3"
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#define AREG5 "s4"
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#define AREG6 "s5"
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#define AREG7 "s6"
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#define AREG8 "s7"
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#elif defined(__sparc__)
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#ifdef HOST_SOLARIS
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#define AREG0 "g2"
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#define AREG1 "g3"
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#define AREG2 "g4"
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#define AREG3 "g5"
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#define AREG4 "g6"
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#else
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#ifdef __sparc_v9__
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#define AREG0 "g5"
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#define AREG1 "g6"
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#define AREG2 "g7"
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#else
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#define AREG0 "g6"
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#define AREG1 "g1"
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#define AREG2 "g2"
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#define AREG3 "g3"
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#define AREG4 "l0"
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#define AREG5 "l1"
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#define AREG6 "l2"
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#define AREG7 "l3"
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#define AREG8 "l4"
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#define AREG9 "l5"
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#define AREG10 "l6"
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#define AREG11 "l7"
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#endif
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#endif
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#elif defined(__s390__)
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#define AREG0 "r10"
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#define AREG1 "r7"
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#define AREG2 "r8"
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#define AREG3 "r9"
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#elif defined(__alpha__)
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/* Note $15 is the frame pointer, so anything in op-i386.c that would
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require a frame pointer, like alloca, would probably loose. */
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#define AREG0 "$15"
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#define AREG1 "$9"
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#define AREG2 "$10"
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#define AREG3 "$11"
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#define AREG4 "$12"
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#define AREG5 "$13"
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#define AREG6 "$14"
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#elif defined(__mc68000)
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#define AREG0 "%a5"
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#define AREG1 "%a4"
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#define AREG2 "%d7"
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#define AREG3 "%d6"
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#define AREG4 "%d5"
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#elif defined(__ia64__)
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#define AREG0 "r7"
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#define AREG1 "r4"
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#define AREG2 "r5"
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#define AREG3 "r6"
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#else
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#error unsupported CPU
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#endif
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/* force GCC to generate only one epilog at the end of the function */
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#define FORCE_RET() __asm__ __volatile__("" : : : "memory");
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#ifndef OPPROTO
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#define OPPROTO
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#endif
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#define xglue(x, y) x ## y
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#define glue(x, y) xglue(x, y)
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#define stringify(s) tostring(s)
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#define tostring(s) #s
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#if defined(__alpha__) || defined(__s390__)
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/* the symbols are considered non exported so a br immediate is generated */
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#define __hidden __attribute__((visibility("hidden")))
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#else
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#define __hidden
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#endif
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#if defined(__alpha__)
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/* Suggested by Richard Henderson. This will result in code like
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ldah $0,__op_param1($29) !gprelhigh
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lda $0,__op_param1($0) !gprellow
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We can then conveniently change $29 to $31 and adapt the offsets to
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emit the appropriate constant. */
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extern int __op_param1 __hidden;
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extern int __op_param2 __hidden;
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extern int __op_param3 __hidden;
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#define PARAM1 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param1)); _r; })
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#define PARAM2 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param2)); _r; })
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#define PARAM3 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param3)); _r; })
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#elif defined(__s390__)
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extern int __op_param1 __hidden;
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extern int __op_param2 __hidden;
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extern int __op_param3 __hidden;
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#define PARAM1 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param1) "; l %0,0(%0)" : "=r"(_r) : ); _r; })
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#define PARAM2 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param2) "; l %0,0(%0)" : "=r"(_r) : ); _r; })
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#define PARAM3 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param3) "; l %0,0(%0)" : "=r"(_r) : ); _r; })
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#else
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#if defined(__APPLE__)
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static int __op_param1, __op_param2, __op_param3;
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#else
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extern int __op_param1, __op_param2, __op_param3;
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#endif
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#define PARAM1 ((long)(&__op_param1))
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#define PARAM2 ((long)(&__op_param2))
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#define PARAM3 ((long)(&__op_param3))
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#endif /* !defined(__alpha__) */
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extern int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
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#if defined(_WIN32) || defined(__APPLE__)
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#define ASM_NAME(x) "_" #x
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#else
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#define ASM_NAME(x) #x
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#endif
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#if defined(__i386__)
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#define EXIT_TB() asm volatile ("ret")
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#define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
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#elif defined(__x86_64__)
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#define EXIT_TB() asm volatile ("ret")
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#define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
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#elif defined(__powerpc__)
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#define EXIT_TB() asm volatile ("blr")
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#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
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#elif defined(__s390__)
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#define EXIT_TB() asm volatile ("br %r14")
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#define GOTO_LABEL_PARAM(n) asm volatile ("larl %r7,12; l %r7,0(%r7); br %r7; .long " ASM_NAME(__op_gen_label) #n)
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#elif defined(__alpha__)
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#define EXIT_TB() asm volatile ("ret")
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#elif defined(__ia64__)
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#define EXIT_TB() asm volatile ("br.ret.sptk.many b0;;")
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#define GOTO_LABEL_PARAM(n) asm volatile ("br.sptk.many " \
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ASM_NAME(__op_gen_label) #n)
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#elif defined(__sparc__)
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#define EXIT_TB() asm volatile ("jmpl %i0 + 8, %g0; nop")
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#define GOTO_LABEL_PARAM(n) asm volatile ("ba " ASM_NAME(__op_gen_label) #n ";nop")
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#elif defined(__arm__)
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#define EXIT_TB() asm volatile ("b exec_loop")
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#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
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#elif defined(__mc68000)
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#define EXIT_TB() asm volatile ("rts")
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#elif defined(__mips__)
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#define EXIT_TB() asm volatile ("jr $ra")
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#define GOTO_LABEL_PARAM(n) asm volatile (".set noat; la $1, " ASM_NAME(__op_gen_label) #n "; jr $1; .set at")
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#elif defined(__hppa__)
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#define GOTO_LABEL_PARAM(n) asm volatile ("b,n " ASM_NAME(__op_gen_label) #n)
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#else
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#error unsupported CPU
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#endif
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/* The return address may point to the start of the next instruction.
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Subtracting one gets us the call instruction itself. */
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#if defined(__s390__)
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# define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))
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#elif defined(__arm__)
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/* Thumb return addresses have the low bit set, so we need to subtract two.
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This is still safe in ARM mode because instructions are 4 bytes. */
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# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))
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#else
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# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))
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#endif
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#endif /* !defined(__DYNGEN_EXEC_H__) */
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