xref: /freebsd-10.2-release/sys/contrib/ia64/libuwx/src/uwx_env.h

/*
 * Copyright (c) 2002,2003 Hewlett-Packard Company
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include "uwx.h"

#define WORDSZ			4
#define DWORDSZ			8
#define BUNDLESZ		16
#define SLOTSPERBUNDLE		3

#define UNWIND_TBL_32BIT	0x8000000000000000LL

#define UNW_VER(x)		((x) >> 48)
#define UNW_FLAG_MASK		0x0000ffff00000000LL
#define UNW_FLAG_EHANDLER	0x0000000100000000LL
#define UNW_FLAG_UHANDLER	0x0000000200000000LL
#define UNW_LENGTH(x)		((x) & 0x00000000ffffffffLL)

struct uwx_scoreboard;

#define NSCOREBOARDS	8	/* Initial allocation of scoreboards */

#define NSPECIALREG	14
#define NPRESERVEDGR	4
#define NPRESERVEDBR	5
#define NPRESERVEDFR	20

struct uwx_fpreg {
    uint64_t part0;
    uint64_t part1;
};

struct uwx_context {
    unsigned int valid_regs;
    unsigned int valid_frs;
    uint64_t special[NSPECIALREG];
    uint64_t gr[NPRESERVEDGR];
    uint64_t br[NPRESERVEDBR];
    struct uwx_fpreg fr[NPRESERVEDFR];
};

#define VALID_GR_SHIFT	NSPECIALREG
#define VALID_BR_SHIFT	(NSPECIALREG + NPRESERVEDGR)

#define VALID_BASIC4	0x0f	/* IP, SP, BSP, PFS */

struct uwx_history {
    uint64_t special[NSPECIALREG];
    uint64_t gr[NPRESERVEDGR];
    uint64_t br[NPRESERVEDBR];
    uint64_t fr[NPRESERVEDFR];
};

struct uwx_str_pool;

struct uwx_env {
    struct uwx_context context;
    uint64_t *rstate;
    int64_t function_offset;
    struct uwx_history history;
    alloc_cb allocate_cb;
    free_cb free_cb;
    struct uwx_scoreboard *free_scoreboards;
    struct uwx_scoreboard *used_scoreboards;
    struct uwx_scoreboard *labeled_scoreboards;
    struct uwx_str_pool *string_pool;
    char *module_name;
    char *function_name;
    intptr_t cb_token;
    copyin_cb copyin;
    lookupip_cb lookupip;
    int remote;
    int byte_swap;
    int abi_context;
    int nsbreg;
    int nscoreboards;
    int trace;
};

extern alloc_cb uwx_allocate_cb;
extern free_cb uwx_free_cb;