X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=scope.h;h=aa865bf9b438bcfb1b13557b0dabce0ba3f46ebc;hb=25e9a2e3ad9e75ccc06381c3ed3d656041a0f0e2;hp=0ea343a0e54a24d98d943f5e9ea15271573022ba;hpb=877c3cb57b3cfd1fab42d38930d7791bb022a60e;p=p5sagit%2Fp5-mst-13.2.git diff --git a/scope.h b/scope.h index 0ea343a..aa865bf 100644 --- a/scope.h +++ b/scope.h @@ -1,58 +1,191 @@ -#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 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() -#ifdef DEPRECATED -#define FREE_TMPS() FREETMPS -#endif +#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", \ + 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() -#define LEAVE_SCOPE(old) if (savestack_ix > old) leave_scope(old) - -#define SAVEINT(i) save_int((int*)(&i)); -#define SAVEIV(i) save_iv((IV*)(&i)); -#define SAVEI32(i) save_I32((I32*)(&i)); -#define SAVELONG(l) save_long((long*)(&l)); -#define SAVESPTR(s) save_sptr((SV**)(&s)) -#define SAVEPPTR(s) save_pptr((char**)(&s)) -#define SAVEFREESV(s) save_freesv((SV*)(s)) -#define SAVEFREEOP(o) save_freeop((OP*)(o)) -#define SAVEFREEPV(p) save_freepv((char*)(p)) -#define SAVECLEARSV(sv) save_clearsv((SV**)(&sv)) -#define SAVEDELETE(h,k,l) save_delete((HV*)(h), (char*)(k), (I32)l) -#define SAVEDESTRUCTOR(f,p) save_destructor((void(*)_((void*)))f,(void*)p) +#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 + +/* 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 + * 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)) +