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7907280 perl 5.0 alpha 2
Larry Wall authored
1 #define SAVEt_ITEM 0
2 #define SAVEt_SV 1
3 #define SAVEt_AV 2
4 #define SAVEt_HV 3
5 #define SAVEt_INT 4
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6 #define SAVEt_LONG 5
7 #define SAVEt_I32 6
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8 #define SAVEt_IV 7
9 #define SAVEt_SPTR 8
10 #define SAVEt_APTR 9
11 #define SAVEt_HPTR 10
12 #define SAVEt_PPTR 11
13 #define SAVEt_NSTAB 12
14 #define SAVEt_SVREF 13
15 #define SAVEt_GP 14
16 #define SAVEt_FREESV 15
17 #define SAVEt_FREEOP 16
18 #define SAVEt_FREEPV 17
19 #define SAVEt_CLEARSV 18
20 #define SAVEt_DELETE 19
21 #define SAVEt_DESTRUCTOR 20
22 #define SAVEt_REGCONTEXT 21
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Perl 5 Porters authored
23 #define SAVEt_STACK_POS 22
24 #define SAVEt_I16 23
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Malcolm Beattie authored
25 #define SAVEt_OP 24
7907280 perl 5.0 alpha 2
Larry Wall authored
26
27 #define SSCHECK(need) if (savestack_ix + need > savestack_max) savestack_grow()
28 #define SSPUSHINT(i) (savestack[savestack_ix++].any_i32 = (I32)(i))
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29 #define SSPUSHLONG(i) (savestack[savestack_ix++].any_long = (long)(i))
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30 #define SSPUSHIV(i) (savestack[savestack_ix++].any_iv = (IV)(i))
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31 #define SSPUSHPTR(p) (savestack[savestack_ix++].any_ptr = (void*)(p))
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32 #define SSPUSHDPTR(p) (savestack[savestack_ix++].any_dptr = (p))
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33 #define SSPOPINT (savestack[--savestack_ix].any_i32)
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34 #define SSPOPLONG (savestack[--savestack_ix].any_long)
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35 #define SSPOPIV (savestack[--savestack_ix].any_iv)
7907280 perl 5.0 alpha 2
Larry Wall authored
36 #define SSPOPPTR (savestack[--savestack_ix].any_ptr)
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37 #define SSPOPDPTR (savestack[--savestack_ix].any_dptr)
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38
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39 #define SAVETMPS save_int((int*)&tmps_floor), tmps_floor = tmps_ix
40 #define FREETMPS if (tmps_ix > tmps_floor) free_tmps()
41
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42 #ifdef DEBUGGING
43 #define ENTER \
44 STMT_START { \
45 push_scope(); \
46 DEBUG_l(deb("ENTER scope %ld at %s:%d\n", \
47 scopestack_ix, __FILE__, __LINE__)); \
48 } STMT_END
49 #define LEAVE \
50 STMT_START { \
51 DEBUG_l(deb("LEAVE scope %ld at %s:%d\n", \
52 scopestack_ix, __FILE__, __LINE__)); \
53 pop_scope(); \
54 } STMT_END
55 #else
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56 #define ENTER push_scope()
57 #define LEAVE pop_scope()
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58 #endif
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59 #define LEAVE_SCOPE(old) if (savestack_ix > old) leave_scope(old)
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60
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61 /*
62 * Not using SOFT_CAST on SAVEFREESV and SAVEFREESV
63 * because these are used for several kinds of pointer values
64 */
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65 #define SAVEI16(i) save_I16(SOFT_CAST(I16*)&(i))
66 #define SAVEI32(i) save_I32(SOFT_CAST(I32*)&(i))
67 #define SAVEINT(i) save_int(SOFT_CAST(int*)&(i))
68 #define SAVEIV(i) save_iv(SOFT_CAST(IV*)&(i))
69 #define SAVELONG(l) save_long(SOFT_CAST(long*)&(l))
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70 #define SAVESPTR(s) save_sptr((SV**)&(s))
71 #define SAVEPPTR(s) save_pptr(SOFT_CAST(char**)&(s))
72 #define SAVEFREESV(s) save_freesv((SV*)(s))
73 #define SAVEFREEOP(o) save_freeop(SOFT_CAST(OP*)(o))
74 #define SAVEFREEPV(p) save_freepv(SOFT_CAST(char*)(p))
75 #define SAVECLEARSV(sv) save_clearsv(SOFT_CAST(SV**)&(sv))
76 #define SAVEDELETE(h,k,l) \
77 save_delete(SOFT_CAST(HV*)(h), SOFT_CAST(char*)(k), (I32)(l))
78 #define SAVEDESTRUCTOR(f,p) \
79 save_destructor(SOFT_CAST(void(*)_((void*)))(f),SOFT_CAST(void*)(p))
80 #define SAVESTACK_POS() STMT_START { \
81 SSCHECK(2); \
82 SSPUSHINT(stack_sp - stack_base); \
83 SSPUSHINT(SAVEt_STACK_POS); \
84 } STMT_END
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Malcolm Beattie authored
85 #define SAVEOP() save_op()
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86
87 /* A jmpenv packages the state required to perform a proper non-local jump.
88 * Note that there is a start_env initialized when perl starts, and top_env
89 * points to this initially, so top_env should always be non-null.
90 *
91 * Existence of a non-null top_env->je_prev implies it is valid to call
92 * longjmp() at that runlevel (we make sure start_env.je_prev is always
93 * null to ensure this).
94 *
95 * je_mustcatch, when set at any runlevel to TRUE, means eval ops must
96 * establish a local jmpenv to handle exception traps. Care must be taken
97 * to restore the previous value of je_mustcatch before exiting the
98 * stack frame iff JMPENV_PUSH was not called in that stack frame.
99 * GSAR 97-03-27
100 */
101
102 struct jmpenv {
103 struct jmpenv * je_prev;
104 Sigjmp_buf je_buf;
105 int je_ret; /* return value of last setjmp() */
106 bool je_mustcatch; /* longjmp()s must be caught locally */
107 };
108
109 typedef struct jmpenv JMPENV;
110
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111 #ifdef OP_IN_REGISTER
112 #define OP_REG_TO_MEM opsave = op
113 #define OP_MEM_TO_REG op = opsave
114 #else
115 #define OP_REG_TO_MEM NOOP
116 #define OP_MEM_TO_REG NOOP
117 #endif
118
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119 #define dJMPENV JMPENV cur_env
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120 #define JMPENV_PUSH(v) \
121 STMT_START { \
122 cur_env.je_prev = top_env; \
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123 OP_REG_TO_MEM; \
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124 cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, 1); \
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125 OP_MEM_TO_REG; \
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126 top_env = &cur_env; \
127 cur_env.je_mustcatch = FALSE; \
128 (v) = cur_env.je_ret; \
129 } STMT_END
130 #define JMPENV_POP \
131 STMT_START { top_env = cur_env.je_prev; } STMT_END
132 #define JMPENV_JUMP(v) \
133 STMT_START { \
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134 OP_REG_TO_MEM; \
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135 if (top_env->je_prev) \
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136 PerlProc_longjmp(top_env->je_buf, (v)); \
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137 if ((v) == 2) \
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138 PerlProc_exit(STATUS_NATIVE_EXPORT); \
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139 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); \
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140 PerlProc_exit(1); \
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141 } STMT_END
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142
143 #define CATCH_GET (top_env->je_mustcatch)
144 #define CATCH_SET(v) (top_env->je_mustcatch = (v))
145
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