X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=scope.h;h=0dde4e12a0625c8d956ee2f9011917e57a4b9834;hb=4944e2f7e3104099141e13fc5a663be1edbc5ff4;hp=7699d54f18b07400cf9220643fb2c74e3430e22e;hpb=85e6fe838fb25b257a1b363debf8691c0992ef71;p=p5sagit%2Fp5-mst-13.2.git diff --git a/scope.h b/scope.h index 7699d54..0dde4e1 100644 --- a/scope.h +++ b/scope.h @@ -5,26 +5,167 @@ #define SAVEt_INT 4 #define SAVEt_LONG 5 #define SAVEt_I32 6 -#define SAVEt_SPTR 7 -#define SAVEt_APTR 8 -#define SAVEt_HPTR 9 -#define SAVEt_PPTR 10 -#define SAVEt_NSTAB 11 -#define SAVEt_SVREF 12 -#define SAVEt_GP 13 -#define SAVEt_FREESV 14 -#define SAVEt_FREEOP 15 -#define SAVEt_FREEPV 16 -#define SAVEt_CLEARSV 17 -#define SAVEt_DELETE 18 - -#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 SSPUSHPTR(p) (savestack[savestack_ix++].any_ptr = (void*)(p)) -#define SSPOPINT (savestack[--savestack_ix].any_i32) -#define SSPOPLONG (savestack[--savestack_ix].any_long) -#define SSPOPPTR (savestack[--savestack_ix].any_ptr) - -#define FREE_TMPS() if (tmps_ix > tmps_floor) free_tmps() -#define LEAVE_SCOPE(old) if (savestack_ix > old) leave_scope(old) +#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 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 SAVEFREESV 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 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)) +