-#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 SSCHECK(need) if (savestack_ix + need > savestack_max) savestack_grow()
-#define SSPUSHINT(i) (savestack[savestack_ix++].any_i32 = (I32)(i))
-#define SSPUSHLONG(i) (savestack[savestack_ix++].any_long = (long)(i))
-#define SSPUSHIV(i) (savestack[savestack_ix++].any_iv = (IV)(i))
-#define SSPUSHPTR(p) (savestack[savestack_ix++].any_ptr = (void*)(p))
-#define SSPUSHDPTR(p) (savestack[savestack_ix++].any_dptr = (p))
-#define SSPOPINT (savestack[--savestack_ix].any_i32)
-#define SSPOPLONG (savestack[--savestack_ix].any_long)
-#define SSPOPIV (savestack[--savestack_ix].any_iv)
-#define SSPOPPTR (savestack[--savestack_ix].any_ptr)
-#define SSPOPDPTR (savestack[--savestack_ix].any_dptr)
-
-#define SAVETMPS save_int((int*)&tmps_floor), tmps_floor = tmps_ix
-#define FREETMPS if (tmps_ix > tmps_floor) free_tmps()
+#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
+#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", \
- scopestack_ix, __FILE__, __LINE__))); \
+ PL_scopestack_ix, __FILE__, __LINE__))); \
} STMT_END
#define LEAVE \
STMT_START { \
DEBUG_l(WITH_THR(deb("LEAVE scope %ld at %s:%d\n", \
- scopestack_ix, __FILE__, __LINE__))); \
+ PL_scopestack_ix, __FILE__, __LINE__))); \
pop_scope(); \
} STMT_END
#else
#define ENTER push_scope()
#define LEAVE pop_scope()
#endif
-#define LEAVE_SCOPE(old) if (savestack_ix > old) leave_scope(old)
+#define LEAVE_SCOPE(old) if (PL_savestack_ix > old) leave_scope(old)
/*
- * Not using SOFT_CAST on SAVEFREESV and SAVEFREESV
+ * 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 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
save_destructor(SOFT_CAST(void(*)_((void*)))(FUNC_NAME_TO_PTR(f)), \
SOFT_CAST(void*)(p))
#endif
-#define SAVESTACK_POS() STMT_START { \
- SSCHECK(2); \
- SSPUSHINT(stack_sp - stack_base); \
- SSPUSHINT(SAVEt_STACK_POS); \
- } STMT_END
+
+#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
+
+/* SSNEW() temporarily allocates a specified number of bytes of data on the
+ * savestack. It returns an integer index into the savestack, because a
+ * pointer would get broken if the savestack is moved on reallocation.
+ * SSNEWa() works like SSNEW(), but also aligns the data to the specified
+ * number of bytes. MEM_ALIGNBYTES is perhaps the most useful. The
+ * alignment will be preserved therough savestack reallocation *only* if
+ * realloc returns data aligned to a size divisible by `align'!
+ *
+ * SSPTR() converts the index returned by SSNEW/SSNEWa() into a pointer.
+ */
+
+#define SSNEW(size) save_alloc(size, 0)
+#define SSNEWa(size,align) save_alloc(size, \
+ (align - ((int)((caddr_t)&PL_savestack[PL_savestack_ix]) % align)) % align)
+
+#define SSPTR(off,type) ((type) ((char*)PL_savestack + off))
+
/* 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
- * (*je_jump)() at that runlevel. Always use the macros below! They
- * manage most of the complexity for you.
+ * 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.
- *
- * The support for C++ try/throw causes a small loss of flexibility.
- * No longer is it possible to place the body of exception-protected
- * code in the same C function as JMPENV_PUSH &etc. Older code that
- * does this will continue to work with set/longjmp, but cannot use
- * C++ exceptions.
- *
- * GSAR 19970327
- * JPRIT 19980613 (C++ update)
+ * GSAR 97-03-27
*/
-#define JMP_NORMAL 0
-#define JMP_ABNORMAL 1 /* shouldn't happen */
-#define JMP_MYEXIT 2 /* exit */
-#define JMP_EXCEPTION 3 /* die */
-
-/* None of the JMPENV fields should be accessed directly.
- Please use the macros below! */
struct jmpenv {
struct jmpenv * je_prev;
- int je_stat; /* JMP_* reason for setjmp() */
- bool je_mustcatch; /* will need a new TRYBLOCK? */
- void (*je_jump) _((CPERLproto));
-};
-typedef struct jmpenv JMPENV;
-
-struct tryvtbl {
- /* [0] executed before JMPENV_POP
- [1] executed after JMPENV_POP
- (NULL pointers are OK) */
- char *try_context;
- void (*try_normal [2]) _((CPERLproto_ void*));
- void (*try_abnormal [2]) _((CPERLproto_ void*));
- void (*try_exception [2]) _((CPERLproto_ void*));
- void (*try_myexit [2]) _((CPERLproto_ void*));
+ Sigjmp_buf je_buf;
+ int je_ret; /* return value of last setjmp() */
+ bool je_mustcatch; /* longjmp()s must be caught locally */
};
-typedef struct tryvtbl TRYVTBL;
-typedef void (*tryblock_f) _((CPERLproto_ TRYVTBL *vtbl, void *locals));
-#define TRYBLOCK(mytry,vars) \
- (*tryblock_function)(PERL_OBJECT_THIS_ &mytry, &vars)
+typedef struct jmpenv JMPENV;
#ifdef OP_IN_REGISTER
-#define OP_REG_TO_MEM opsave = op
-#define OP_MEM_TO_REG op = opsave
+#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 JMPENV_TOPINIT(top) \
-STMT_START { \
- top.je_prev = NULL; \
- top.je_stat = JMP_ABNORMAL; \
- top.je_mustcatch = TRUE; \
- top_env = ⊤ \
-} STMT_END
-
-#define JMPENV_INIT(env, jmp) \
-STMT_START { \
- ((JMPENV*)&env)->je_prev = top_env; \
- ((JMPENV*)&env)->je_stat = JMP_NORMAL; \
- ((JMPENV*)&env)->je_jump = jmp; \
- OP_REG_TO_MEM; \
-} STMT_END
-
-#define JMPENV_TRY(env) \
-STMT_START { \
- OP_MEM_TO_REG; \
- ((JMPENV*)&env)->je_mustcatch = FALSE; \
- top_env = (JMPENV*)&env; \
-} STMT_END
-
-#define JMPENV_POP_JE(env) \
-STMT_START { \
- assert(top_env == (JMPENV*)&env); \
- top_env = ((JMPENV*)&env)->je_prev; \
-} STMT_END
-
-#define JMPENV_STAT(env) ((JMPENV*)&env)->je_stat
-
+#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 { \
- assert((v) != JMP_NORMAL); \
OP_REG_TO_MEM; \
- if (top_env->je_prev) { \
- top_env->je_stat = (v); \
- (*top_env->je_jump)(PERL_OBJECT_THIS); \
- } \
- if ((v) == JMP_MYEXIT) \
- PerlProc_exit(STATUS_NATIVE_EXPORT); \
- PerlIO_printf(PerlIO_stderr(), no_top_env); \
- PerlProc_exit(1); \
+ 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 (top_env->je_mustcatch)
-#define CATCH_SET(v) (top_env->je_mustcatch = (v))
-
-
-
-/*******************************************************************
- * JMPENV_PUSH is the old depreciated API. See perl.c for examples
- * of the new API.
- */
-
-struct setjmpenv {
- /* move to scope.c once JMPENV_PUSH is no longer needed XXX */
- JMPENV je0;
- Sigjmp_buf je_buf;
-};
-typedef struct setjmpenv SETJMPENV;
-
-#define dJMPENV SETJMPENV cur_env
-
-extern void setjmp_jump();
-
-#define JMPENV_PUSH(v) \
- STMT_START { \
- JMPENV_INIT(cur_env, setjmp_jump); \
- PerlProc_setjmp(cur_env.je_buf, 1); \
- JMPENV_TRY(cur_env); \
- (v) = JMPENV_STAT(cur_env); \
- } STMT_END
-
-#define JMPENV_POP \
-STMT_START { \
- assert(top_env == (JMPENV*) &cur_env); \
- top_env = cur_env.je0.je_prev; \
-} STMT_END
-
+#define CATCH_GET (PL_top_env->je_mustcatch)
+#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v))
+
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