1/*
2Copyright (c) 2003-2006 Hewlett-Packard Development Company, L.P.
3Permission is hereby granted, free of charge, to any person
4obtaining a copy of this software and associated documentation
5files (the "Software"), to deal in the Software without
6restriction, including without limitation the rights to use,
7copy, modify, merge, publish, distribute, sublicense, and/or sell
8copies of the Software, and to permit persons to whom the
9Software is furnished to do so, subject to the following
10conditions:
11
12The above copyright notice and this permission notice shall be
13included in all copies or substantial portions of the Software.
14
15THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
17OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22OTHER DEALINGS IN THE SOFTWARE.
23*/
24
25#include "uwx.h"
26
27#define WORDSZ			4
28#define DWORDSZ			8
29#define BUNDLESZ		16
30#define SLOTSPERBUNDLE		3
31
32#define UNWIND_TBL_32BIT	0x8000000000000000LL
33
34#define UNW_VER(x)		((x) >> 48)
35#define UNW_FLAG_MASK		0x0000ffff00000000LL
36#define UNW_FLAG_EHANDLER	0x0000000100000000LL
37#define UNW_FLAG_UHANDLER	0x0000000200000000LL
38#define UNW_LENGTH(x)		((x) & 0x00000000ffffffffLL)
39
40struct uwx_scoreboard;
41
42#define NSCOREBOARDS	8	/* Initial allocation of scoreboards */
43
44#define NSPECIALREG	16	/* Must be even, so FRs are aligned */
45#define NPRESERVEDGR	4
46#define NPRESERVEDBR	5
47#define NPRESERVEDFR	20
48
49struct uwx_fpreg {
50    uint64_t part0;
51    uint64_t part1;
52};
53
54struct uwx_context {
55    unsigned int valid_regs;
56    unsigned int valid_frs;
57    uint64_t special[NSPECIALREG];
58    uint64_t gr[NPRESERVEDGR];
59    uint64_t br[NPRESERVEDBR];
60    struct uwx_fpreg fr[NPRESERVEDFR];
61};
62
63#define VALID_GR_SHIFT	NSPECIALREG
64#define VALID_BR_SHIFT	(NSPECIALREG + NPRESERVEDGR)
65
66#define VALID_BASIC4	0x0f	/* IP, SP, BSP, CFM */
67#define VALID_MARKERS	0x70	/* RP, PSP, PFS */
68
69struct uwx_history {
70    uint64_t special[NSPECIALREG];
71    uint64_t gr[NPRESERVEDGR];
72    uint64_t br[NPRESERVEDBR];
73    uint64_t fr[NPRESERVEDFR];
74};
75
76struct uwx_str_pool;
77
78struct uwx_env {
79    struct uwx_context context;
80    uint64_t *rstate;
81    uint64_t remapped_ip;
82    int64_t function_offset;
83    uint64_t ptr_size;
84    uint64_t uinfo_hdr;
85    uint64_t uinfo_end;
86    uint64_t code_start;
87    uint64_t text_base;
88    struct uwx_history history;
89    alloc_cb allocate_cb;
90    free_cb free_cb;
91    struct uwx_scoreboard *free_scoreboards;
92    struct uwx_scoreboard *used_scoreboards;
93    struct uwx_scoreboard *labeled_scoreboards;
94    struct uwx_str_pool *string_pool;
95    char *module_name;
96    char *function_name;
97    intptr_t cb_token;
98    copyin_cb copyin;
99    lookupip_cb lookupip;
100    int remote;
101    int byte_swap;
102    int abi_context;
103    int nsbreg;
104    int nscoreboards;
105    int on_heap;
106    int trace;
107};
108
109extern alloc_cb uwx_allocate_cb;
110extern free_cb uwx_free_cb;
111extern int uwx_init_env(struct uwx_env *env, size_t total_size);
112