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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
#define SAVEt_ITEM 0
#define SAVEt_SV 1
#define SAVEt_AV 2
#define SAVEt_HV 3
#define SAVEt_INT 4
#define SAVEt_LONG 5
#define SAVEt_I32 6
#define SAVEt_IV 7
#define SAVEt_SPTR 8
#define SAVEt_APTR 9
#define SAVEt_HPTR 10
#define SAVEt_PPTR 11
#define SAVEt_NSTAB 12
#define SAVEt_SVREF 13
#define SAVEt_GP 14
#define SAVEt_FREESV 15
#define SAVEt_FREEOP 16
#define SAVEt_FREEPV 17
#define SAVEt_CLEARSV 18
#define SAVEt_DELETE 19
#define SAVEt_DESTRUCTOR 20
#define SAVEt_REGCONTEXT 21
#define SAVEt_STACK_POS 22
#define SAVEt_I16 23
#define SAVEt_AELEM 24
#define SAVEt_HELEM 25
#define SAVEt_OP 26
#define SAVEt_HINTS 27
/* #define SAVEt_ALLOC 28 */ /* defined in 5.005_5x */
#define SAVEt_GENERIC_SVREF 29
#define SSCHECK(need) if (PL_savestack_ix + need > PL_savestack_max) savestack_grow()
#define SSPUSHINT(i) (PL_savestack[PL_savestack_ix++].any_i32 = (I32)(i))
#define SSPUSHLONG(i) (PL_savestack[PL_savestack_ix++].any_long = (long)(i))
#define SSPUSHIV(i) (PL_savestack[PL_savestack_ix++].any_iv = (IV)(i))
#define SSPUSHPTR(p) (PL_savestack[PL_savestack_ix++].any_ptr = (void*)(p))
#define SSPUSHDPTR(p) (PL_savestack[PL_savestack_ix++].any_dptr = (p))
#define SSPOPINT (PL_savestack[--PL_savestack_ix].any_i32)
#define SSPOPLONG (PL_savestack[--PL_savestack_ix].any_long)
#define SSPOPIV (PL_savestack[--PL_savestack_ix].any_iv)
#define SSPOPPTR (PL_savestack[--PL_savestack_ix].any_ptr)
#define SSPOPDPTR (PL_savestack[--PL_savestack_ix].any_dptr)
#define SAVETMPS save_int((int*)&PL_tmps_floor), PL_tmps_floor = PL_tmps_ix
#define FREETMPS if (PL_tmps_ix > PL_tmps_floor) free_tmps()
#ifdef DEBUGGING
#define ENTER \
STMT_START { \
push_scope(); \
DEBUG_l(WITH_THR(deb("ENTER scope %ld at %s:%d\n", \
PL_scopestack_ix, __FILE__, __LINE__))); \
} STMT_END
#define LEAVE \
STMT_START { \
DEBUG_l(WITH_THR(deb("LEAVE scope %ld at %s:%d\n", \
PL_scopestack_ix, __FILE__, __LINE__))); \
pop_scope(); \
} STMT_END
#else
#define ENTER push_scope()
#define LEAVE pop_scope()
#endif
#define LEAVE_SCOPE(old) if (PL_savestack_ix > old) leave_scope(old)
/*
* Not using SOFT_CAST on SAVESPTR, SAVEGENERICSV and SAVEFREESV
* because these are used for several kinds of pointer values
*/
#define SAVEI16(i) save_I16(SOFT_CAST(I16*)&(i))
#define SAVEI32(i) save_I32(SOFT_CAST(I32*)&(i))
#define SAVEINT(i) save_int(SOFT_CAST(int*)&(i))
#define SAVEIV(i) save_iv(SOFT_CAST(IV*)&(i))
#define SAVELONG(l) save_long(SOFT_CAST(long*)&(l))
#define SAVESPTR(s) save_sptr((SV**)&(s))
#define SAVEPPTR(s) save_pptr(SOFT_CAST(char**)&(s))
#define SAVEFREESV(s) save_freesv((SV*)(s))
#define SAVEFREEOP(o) save_freeop(SOFT_CAST(OP*)(o))
#define SAVEFREEPV(p) save_freepv(SOFT_CAST(char*)(p))
#define SAVECLEARSV(sv) save_clearsv(SOFT_CAST(SV**)&(sv))
#define SAVEGENERICSV(s) save_generic_svref((SV**)&(s))
#define SAVEDELETE(h,k,l) \
save_delete(SOFT_CAST(HV*)(h), SOFT_CAST(char*)(k), (I32)(l))
#ifdef PERL_OBJECT
#define CALLDESTRUCTOR this->*SSPOPDPTR
#define SAVEDESTRUCTOR(f,p) \
save_destructor((DESTRUCTORFUNC)(FUNC_NAME_TO_PTR(f)), \
SOFT_CAST(void*)(p))
#else
#define CALLDESTRUCTOR *SSPOPDPTR
#define SAVEDESTRUCTOR(f,p) \
save_destructor(SOFT_CAST(void(*)_((void*)))(FUNC_NAME_TO_PTR(f)), \
SOFT_CAST(void*)(p))
#endif
#define SAVESTACK_POS() \
STMT_START { \
SSCHECK(2); \
SSPUSHINT(PL_stack_sp - PL_stack_base); \
SSPUSHINT(SAVEt_STACK_POS); \
} STMT_END
#define SAVEOP() save_op()
#define SAVEHINTS() \
STMT_START { \
if (PL_hints & HINT_LOCALIZE_HH) \
save_hints(); \
else { \
SSCHECK(2); \
SSPUSHINT(PL_hints); \
SSPUSHINT(SAVEt_HINTS); \
} \
} STMT_END
/* A jmpenv packages the state required to perform a proper non-local jump.
* Note that there is a start_env initialized when perl starts, and top_env
* points to this initially, so top_env should always be non-null.
*
* Existence of a non-null top_env->je_prev implies it is valid to call
* longjmp() at that runlevel (we make sure start_env.je_prev is always
* null to ensure this).
*
* je_mustcatch, when set at any runlevel to TRUE, means eval ops must
* establish a local jmpenv to handle exception traps. Care must be taken
* to restore the previous value of je_mustcatch before exiting the
* stack frame iff JMPENV_PUSH was not called in that stack frame.
* GSAR 97-03-27
*/
struct jmpenv {
struct jmpenv * je_prev;
Sigjmp_buf je_buf;
int je_ret; /* return value of last setjmp() */
bool je_mustcatch; /* longjmp()s must be caught locally */
};
typedef struct jmpenv JMPENV;
#ifdef OP_IN_REGISTER
#define OP_REG_TO_MEM PL_opsave = op
#define OP_MEM_TO_REG op = PL_opsave
#else
#define OP_REG_TO_MEM NOOP
#define OP_MEM_TO_REG NOOP
#endif
#define dJMPENV JMPENV cur_env
#define JMPENV_PUSH(v) \
STMT_START { \
cur_env.je_prev = PL_top_env; \
OP_REG_TO_MEM; \
cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, 1); \
OP_MEM_TO_REG; \
PL_top_env = &cur_env; \
cur_env.je_mustcatch = FALSE; \
(v) = cur_env.je_ret; \
} STMT_END
#define JMPENV_POP \
STMT_START { PL_top_env = cur_env.je_prev; } STMT_END
#define JMPENV_JUMP(v) \
STMT_START { \
OP_REG_TO_MEM; \
if (PL_top_env->je_prev) \
PerlProc_longjmp(PL_top_env->je_buf, (v)); \
if ((v) == 2) \
PerlProc_exit(STATUS_NATIVE_EXPORT); \
PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); \
PerlProc_exit(1); \
} STMT_END
#define CATCH_GET (PL_top_env->je_mustcatch)
#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v))
|
