blob: 2668639865ecc889b5010f549cd9ec0801aed395 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
/* Machine-dependent interface with the asm code */
#ifndef CAML_STACK_H
#define CAML_STACK_H
#ifdef CAML_INTERNALS
/* Macros to access the stack frame */
#ifdef TARGET_i386
#define Saved_return_address(sp) *((intnat *)((sp) - 4))
#ifndef SYS_win32
#define Callback_link(sp) ((struct caml_context *)((sp) + 16))
#else
#define Callback_link(sp) ((struct caml_context *)((sp) + 8))
#endif
#endif
#ifdef TARGET_power
#if defined(MODEL_ppc)
#define Saved_return_address(sp) *((intnat *)((sp) - 4))
#define Callback_link(sp) ((struct caml_context *)((sp) + 16))
#elif defined(MODEL_ppc64)
#define Saved_return_address(sp) *((intnat *)((sp) + 16))
#define Callback_link(sp) ((struct caml_context *)((sp) + (48 + 32)))
#elif defined(MODEL_ppc64le)
#define Saved_return_address(sp) *((intnat *)((sp) + 16))
#define Callback_link(sp) ((struct caml_context *)((sp) + (32 + 32)))
#else
#error "TARGET_power: wrong MODEL"
#endif
#define Already_scanned(sp, retaddr) ((retaddr) & 1)
#define Mask_already_scanned(retaddr) ((retaddr) & ~1)
#define Mark_scanned(sp, retaddr) Saved_return_address(sp) = (retaddr) | 1
#endif
#ifdef TARGET_s390x
#define Saved_return_address(sp) *((intnat *)((sp) - SIZEOF_PTR))
#define Trap_frame_size 16
#define Callback_link(sp) ((struct caml_context *)((sp) + Trap_frame_size))
#endif
#ifdef TARGET_arm
#define Saved_return_address(sp) *((intnat *)((sp) - 4))
#define Callback_link(sp) ((struct caml_context *)((sp) + 8))
#endif
#ifdef TARGET_amd64
#define Saved_return_address(sp) *((intnat *)((sp) - 8))
#define Callback_link(sp) ((struct caml_context *)((sp) + 16))
#endif
#ifdef TARGET_arm64
#define Saved_return_address(sp) *((intnat *)((sp) - 8))
#define Callback_link(sp) ((struct caml_context *)((sp) + 16))
#endif
/* Structure of OCaml callback contexts */
struct caml_context {
char * bottom_of_stack; /* beginning of OCaml stack chunk */
uintnat last_retaddr; /* last return address in OCaml code */
value * gc_regs; /* pointer to register block */
#ifdef WITH_SPACETIME
void* trie_node;
#endif
};
/* Structure of frame descriptors */
typedef struct {
uintnat retaddr;
unsigned short frame_size;
unsigned short num_live;
unsigned short live_ofs[1];
} frame_descr;
/* Hash table of frame descriptors */
extern frame_descr ** caml_frame_descriptors;
extern int caml_frame_descriptors_mask;
#define Hash_retaddr(addr) \
(((uintnat)(addr) >> 3) & caml_frame_descriptors_mask)
extern void caml_init_frame_descriptors(void);
extern void caml_register_frametable(intnat *);
extern void caml_unregister_frametable(intnat *);
extern void caml_register_dyn_global(void *);
extern uintnat caml_stack_usage (void);
extern uintnat (*caml_stack_usage_hook)(void);
/* Declaration of variables used in the asm code */
extern char * caml_top_of_stack;
extern char * caml_bottom_of_stack;
extern uintnat caml_last_return_address;
extern value * caml_gc_regs;
extern char * caml_exception_pointer;
extern value * caml_globals[];
extern char caml_globals_map[];
extern intnat caml_globals_inited;
extern intnat * caml_frametable[];
CAMLextern frame_descr * caml_next_frame_descriptor(uintnat * pc, char ** sp);
#endif /* CAML_INTERNALS */
#endif /* CAML_STACK_H */
|
