This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
the dTHR hits
[perl5.git] / bytecode.pl
index 0f79e65..8d77620 100644 (file)
@@ -1,17 +1,19 @@
+BEGIN {
+  push @INC, './lib';
+}
 use strict;
 my %alias_to = (
     U32 => [qw(PADOFFSET STRLEN)],
     I32 => [qw(SSize_t long)],
     U16 => [qw(OPCODE line_t short)],
     U8 => [qw(char)],
-    objindex => [qw(svindex opindex)]          
 );
 
-my @optype= qw(OP UNOP BINOP LOGOP CONDOP LISTOP PMOP SVOP GVOP PVOP LOOP COP);
+my @optype= qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP);
 
 # Nullsv *must* come first in the following so that the condition
 # ($$sv == 0) can continue to be used to test (sv == Nullsv).
-my @specialsv = qw(Nullsv &sv_undef &sv_yes &sv_no);
+my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no pWARN_ALL pWARN_NONE);
 
 my (%alias_from, $from, $tos);
 while (($from, $tos) = each %alias_to) {
@@ -20,7 +22,7 @@ while (($from, $tos) = each %alias_to) {
 
 my $c_header = <<'EOT';
 /*
- *      Copyright (c) 1996 Malcolm Beattie
+ *      Copyright (c) 1996-1999 Malcolm Beattie
  *
  *      You may distribute under the terms of either the GNU General Public
  *      License or the Artistic License, as specified in the README file.
@@ -34,26 +36,18 @@ EOT
 my $perl_header;
 ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
 
-if (-f "byterun.c") {
-    rename("byterun.c", "byterun.c.old");
-}
-if (-f "byterun.h") {
-    rename("byterun.h", "byterun.h.old");
-}
-if (-f "Asmdata.pm") {
-    rename("Asmdata.pm", "Asmdata.pm.old");
-}
+unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm";
 
 #
 # Start with boilerplate for Asmdata.pm
 #
-open(ASMDATA_PM, ">Asmdata.pm") or die "Asmdata.pm: $!";
+open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
 print ASMDATA_PM $perl_header, <<'EOT';
 package B::Asmdata;
 use Exporter;
 @ISA = qw(Exporter);
 @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
-use vars qw(%insn_data @insn_name @optype @specialsv_name);
+our(%insn_data, @insn_name, @optype, @specialsv_name);
 
 EOT
 print ASMDATA_PM <<"EOT";
@@ -68,24 +62,67 @@ EOT
 #
 # Boilerplate for byterun.c
 #
-open(BYTERUN_C, ">byterun.c") or die "byterun.c: $!";
+open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!";
 print BYTERUN_C $c_header, <<'EOT';
 
+#define PERL_NO_GET_CONTEXT
 #include "EXTERN.h"
 #include "perl.h"
-#include "bytecode.h"
+#define NO_XSLOCKS
+#include "XSUB.h"
+
+#ifdef PERL_OBJECT
+#undef CALL_FPTR
+#define CALL_FPTR(fptr) (pPerl->*fptr)
+#undef PL_ppaddr
+#define PL_ppaddr (*get_ppaddr())
+#endif
+
 #include "byterun.h"
+#include "bytecode.h"
+
+
+static const int optype_size[] = {
+EOT
+my $i = 0;
+for ($i = 0; $i < @optype - 1; $i++) {
+    printf BYTERUN_C "    sizeof(%s),\n", $optype[$i], $i;
+}
+printf BYTERUN_C "    sizeof(%s)\n", $optype[$i], $i;
+print BYTERUN_C <<'EOT';
+};
+
+void *
+bset_obj_store(pTHXo_ struct byteloader_state *bstate, void *obj, I32 ix)
+{
+    if (ix > bstate->bs_obj_list_fill) {
+       Renew(bstate->bs_obj_list, ix + 32, void*);
+       bstate->bs_obj_list_fill = ix + 31;
+    }
+    bstate->bs_obj_list[ix] = obj;
+    return obj;
+}
 
-#ifdef INDIRECT_BGET_MACROS
-void byterun(bs)
-struct bytestream bs;
-#else
-void byterun(fp)
-FILE *fp;
-#endif /* INDIRECT_BGET_MACROS */
+void
+byterun(pTHXo_ register struct byteloader_state *bstate)
 {
-    int insn;
-    while ((insn = FGETC()) != EOF) {
+    register int insn;
+    U32 ix;
+    SV *specialsv_list[6];
+
+    BYTECODE_HEADER_CHECK;     /* croak if incorrect platform */
+    New(666, bstate->bs_obj_list, 32, void*); /* set op objlist */
+    bstate->bs_obj_list_fill = 31;
+
+EOT
+
+for (my $i = 0; $i < @specialsv; $i++) {
+    print BYTERUN_C "    specialsv_list[$i] = $specialsv[$i];\n";
+}
+
+print BYTERUN_C <<'EOT';
+
+    while ((insn = BGET_FGETC()) != EOF) {
        switch (insn) {
 EOT
 
@@ -119,7 +156,7 @@ while (<DATA>) {
     if ($flags =~ /x/) {
        print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
     } elsif ($flags =~ /s/) {
-       # Store instructions store to obj_list[arg]. "lvalue" field is rvalue.
+       # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue.
        print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
     }
     elsif ($optarg && $lvalue ne "none") {
@@ -143,7 +180,7 @@ EOT
 #
 print BYTERUN_C <<'EOT';
          default:
-           croak("Illegal bytecode instruction %d\n", insn);
+           Perl_croak(aTHX_ "Illegal bytecode instruction %d\n", insn);
            /* NOTREACHED */
        }
     }
@@ -153,25 +190,30 @@ EOT
 #
 # Write the instruction and optype enum constants into byterun.h
 #
-open(BYTERUN_H, ">byterun.h") or die "byterun.h: $!";
+open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!";
 print BYTERUN_H $c_header, <<'EOT';
-#ifdef INDIRECT_BGET_MACROS
-struct bytestream {
-    void *data;
-    int (*fgetc)(void *);
-    int (*fread)(char *, size_t, size_t, void*);
-    void (*freadpv)(U32, void*);
+struct byteloader_fdata {
+    SV *datasv;
+    int next_out;
+    int        idx;
+};
+
+struct byteloader_state {
+    struct byteloader_fdata    *bs_fdata;
+    SV                         *bs_sv;
+    void                       **bs_obj_list;
+    int                                bs_obj_list_fill;
+    XPV                                bs_pv;
+    int                                bs_iv_overflows;
 };
-void freadpv _((U32, void *));
-void byterun _((struct bytestream));
-#else
-void byterun _((FILE *));
-#endif /* INDIRECT_BGET_MACROS */
+
+int bl_getc(struct byteloader_fdata *);
+int bl_read(struct byteloader_fdata *, char *, size_t, size_t);
+extern void byterun(pTHXo_ struct byteloader_state *);
 
 enum {
 EOT
 
-my $i = 0;
 my $add_enum_value = 0;
 my $max_insn;
 for ($i = 0; $i < @insn_name; $i++) {
@@ -196,30 +238,6 @@ for ($i = 0; $i < @optype - 1; $i++) {
     printf BYTERUN_H "    OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
 }
 printf BYTERUN_H "    OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
-print BYTERUN_H <<'EOT';
-EXT int optype_size[]
-#ifdef DOINIT
-= {
-EOT
-for ($i = 0; $i < @optype - 1; $i++) {
-    printf BYTERUN_H "    sizeof(%s),\n", $optype[$i], $i;
-}
-printf BYTERUN_H "    sizeof(%s)\n}\n", $optype[$i], $i;
-print BYTERUN_H <<'EOT';
-#endif /* DOINIT */
-;
-
-EOT
-
-printf BYTERUN_H <<'EOT', scalar(@specialsv);
-EXT SV * specialsv_list[%d]
-#ifdef DOINIT
-EOT
-print BYTERUN_H "= { ", join(", ", @specialsv), " }\n";
-print BYTERUN_H <<'EOT';
-#endif /* DOINIT */
-;
-EOT
 
 #
 # Finish off insn_data and create array initialisers in Asmdata.pm
@@ -234,12 +252,32 @@ while (($insn_name, $insn_data) = each %insn_data) {
 @insn_name = map($_ || "unused", @insn_name);
 
 1;
+
+__END__
+
+=head1 NAME
+
+B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
+
+=head1 SYNOPSIS
+
+       use Asmdata;
+
+=head1 DESCRIPTION
+
+See F<ext/B/B/Asmdata.pm>.
+
+=head1 AUTHOR
+
+Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
+
+=cut
 EOT
 
 __END__
 # First set instruction ord("#") to read comment to end-of-line (sneaky)
 %number 35
-comment                arg                     comment
+comment                arg                     comment_t
 # Then make ord("\n") into a no-op
 %number 10
 nop            none                    none
@@ -247,124 +285,125 @@ nop             none                    none
 # ret so that \0-terminated strings can be read properly as bytecode.
 %number 0
 #
-#opcode                lvalue                  argtype         flags   
+#opcode                lvalue                                  argtype         flags   
 #
-ret            none                    none            x
-ldsv           sv                      svindex
-ldop           op                      opindex
-stsv           sv                      U32             s
-stop           op                      U32             s
-ldspecsv       sv                      U8              x
-newsv          sv                      U8              x
-newop          op                      U8              x
-newopn         op                      U8              x
-newpv          none                    PV
-pv_cur         pv.xpv_cur              STRLEN
-pv_free                pv                      none            x
-sv_upgrade     sv                      char            x
-sv_refcnt      SvREFCNT(sv)            U32
-sv_refcnt_add  SvREFCNT(sv)            I32             x
-sv_flags       SvFLAGS(sv)             U32
-xrv            SvRV(sv)                svindex
-xpv            sv                      none            x
-xiv32          SvIVX(sv)               I32
-xiv64          SvIVX(sv)               IV64
-xnv            SvNVX(sv)               double
-xlv_targoff    LvTARGOFF(sv)           STRLEN
-xlv_targlen    LvTARGLEN(sv)           STRLEN
-xlv_targ       LvTARG(sv)              svindex
-xlv_type       LvTYPE(sv)              char
-xbm_useful     BmUSEFUL(sv)            I32
-xbm_previous   BmPREVIOUS(sv)          U16
-xbm_rare       BmRARE(sv)              U8
-xfm_lines      FmLINES(sv)             I32
-xio_lines      IoLINES(sv)             long
-xio_page       IoPAGE(sv)              long
-xio_page_len   IoPAGE_LEN(sv)          long
-xio_lines_left IoLINES_LEFT(sv)        long
-xio_top_name   IoTOP_NAME(sv)          pvcontents
-xio_top_gv     *(SV**)&IoTOP_GV(sv)    svindex
-xio_fmt_name   IoFMT_NAME(sv)          pvcontents
-xio_fmt_gv     *(SV**)&IoFMT_GV(sv)    svindex
-xio_bottom_name        IoBOTTOM_NAME(sv)       pvcontents
-xio_bottom_gv  *(SV**)&IoBOTTOM_GV(sv) svindex
-xio_subprocess IoSUBPROCESS(sv)        short
-xio_type       IoTYPE(sv)              char
-xio_flags      IoFLAGS(sv)             char
-xcv_stash      *(SV**)&CvSTASH(sv)     svindex
-xcv_start      CvSTART(sv)             opindex
-xcv_root       CvROOT(sv)              opindex
-xcv_gv         *(SV**)&CvGV(sv)        svindex
-xcv_filegv     *(SV**)&CvFILEGV(sv)    svindex
-xcv_depth      CvDEPTH(sv)             long
-xcv_padlist    *(SV**)&CvPADLIST(sv)   svindex
-xcv_outside    *(SV**)&CvOUTSIDE(sv)   svindex
-xcv_flags      CvFLAGS(sv)             U8
-av_extend      sv                      SSize_t         x
-av_push                sv                      svindex         x
-xav_fill       AvFILL(sv)              SSize_t
-xav_max                AvMAX(sv)               SSize_t
-xav_flags      AvFLAGS(sv)             U8
-xhv_riter      HvRITER(sv)             I32
-xhv_name       HvNAME(sv)              pvcontents
-hv_store       sv                      svindex         x
-sv_magic       sv                      char            x
-mg_obj         SvMAGIC(sv)->mg_obj     svindex
-mg_private     SvMAGIC(sv)->mg_private U16
-mg_flags       SvMAGIC(sv)->mg_flags   U8
-mg_pv          SvMAGIC(sv)             pvcontents      x
-xmg_stash      *(SV**)&SvSTASH(sv)     svindex
-gv_fetchpv     sv                      strconst        x
-gv_stashpv     sv                      strconst        x
-gp_sv          GvSV(sv)                svindex
-gp_refcnt      GvREFCNT(sv)            U32
-gp_refcnt_add  GvREFCNT(sv)            I32             x
-gp_av          *(SV**)&GvAV(sv)        svindex
-gp_hv          *(SV**)&GvHV(sv)        svindex
-gp_cv          *(SV**)&GvCV(sv)        svindex
-gp_filegv      *(SV**)&GvFILEGV(sv)    svindex
-gp_io          *(SV**)&GvIOp(sv)       svindex
-gp_form                *(SV**)&GvFORM(sv)      svindex
-gp_cvgen       GvCVGEN(sv)             U32
-gp_line                GvLINE(sv)              line_t
-gp_share       sv                      svindex         x
-xgv_flags      GvFLAGS(sv)             U8
-op_next                op->op_next             opindex
-op_sibling     op->op_sibling          opindex
-op_ppaddr      op->op_ppaddr           strconst        x
-op_targ                op->op_targ             PADOFFSET
-op_type                op                      OPCODE          x
-op_seq         op->op_seq              U16
-op_flags       op->op_flags            U8
-op_private     op->op_private          U8
-op_first       cUNOP->op_first         opindex
-op_last                cBINOP->op_last         opindex
-op_other       cLOGOP->op_other        opindex
-op_true                cCONDOP->op_true        opindex
-op_false       cCONDOP->op_false       opindex
-op_children    cLISTOP->op_children    U32
-op_pmreplroot  cPMOP->op_pmreplroot    opindex
-op_pmreplrootgv        *(SV**)&cPMOP->op_pmreplroot    svindex
-op_pmreplstart cPMOP->op_pmreplstart   opindex
-op_pmnext      *(OP**)&cPMOP->op_pmnext        opindex
-pregcomp       op                      pvcontents      x
-op_pmshort     cPMOP->op_pmshort       svindex
-op_pmflags     cPMOP->op_pmflags       U16
-op_pmpermflags cPMOP->op_pmpermflags   U16
-op_pmslen      cPMOP->op_pmslen        char
-op_sv          cSVOP->op_sv            svindex
-op_gv          *(SV**)&cGVOP->op_gv    svindex
-op_pv          cPVOP->op_pv            pvcontents
-op_pv_tr       cPVOP->op_pv            op_tr_array
-op_redoop      cLOOP->op_redoop        opindex
-op_nextop      cLOOP->op_nextop        opindex
-op_lastop      cLOOP->op_lastop        opindex
-cop_label      cCOP->cop_label         pvcontents
-cop_stash      *(SV**)&cCOP->cop_stash         svindex
-cop_filegv     *(SV**)&cCOP->cop_filegv        svindex
-cop_seq                cCOP->cop_seq           U32
-cop_arybase    cCOP->cop_arybase       I32
-cop_line       cCOP->cop_line          line_t
-main_start     main_start              opindex
-main_root      main_root               opindex
-curpad         curpad                  svindex         x
+ret            none                                    none            x
+ldsv           bstate->bs_sv                           svindex
+ldop           PL_op                                   opindex
+stsv           bstate->bs_sv                           U32             s
+stop           PL_op                                   U32             s
+stpv           bstate->bs_pv.xpv_pv                    U32             x
+ldspecsv       bstate->bs_sv                           U8              x
+newsv          bstate->bs_sv                           U8              x
+newop          PL_op                                   U8              x
+newopn         PL_op                                   U8              x
+newpv          none                                    PV
+pv_cur         bstate->bs_pv.xpv_cur                   STRLEN
+pv_free                bstate->bs_pv                           none            x
+sv_upgrade     bstate->bs_sv                           char            x
+sv_refcnt      SvREFCNT(bstate->bs_sv)                 U32
+sv_refcnt_add  SvREFCNT(bstate->bs_sv)                 I32             x
+sv_flags       SvFLAGS(bstate->bs_sv)                  U32
+xrv            SvRV(bstate->bs_sv)                     svindex
+xpv            bstate->bs_sv                           none            x
+xiv32          SvIVX(bstate->bs_sv)                    I32
+xiv64          SvIVX(bstate->bs_sv)                    IV64
+xnv            SvNVX(bstate->bs_sv)                    NV
+xlv_targoff    LvTARGOFF(bstate->bs_sv)                STRLEN
+xlv_targlen    LvTARGLEN(bstate->bs_sv)                STRLEN
+xlv_targ       LvTARG(bstate->bs_sv)                   svindex
+xlv_type       LvTYPE(bstate->bs_sv)                   char
+xbm_useful     BmUSEFUL(bstate->bs_sv)                 I32
+xbm_previous   BmPREVIOUS(bstate->bs_sv)               U16
+xbm_rare       BmRARE(bstate->bs_sv)                   U8
+xfm_lines      FmLINES(bstate->bs_sv)                  I32
+xio_lines      IoLINES(bstate->bs_sv)                  long
+xio_page       IoPAGE(bstate->bs_sv)                   long
+xio_page_len   IoPAGE_LEN(bstate->bs_sv)               long
+xio_lines_left IoLINES_LEFT(bstate->bs_sv)             long
+xio_top_name   IoTOP_NAME(bstate->bs_sv)               pvcontents
+xio_top_gv     *(SV**)&IoTOP_GV(bstate->bs_sv)         svindex
+xio_fmt_name   IoFMT_NAME(bstate->bs_sv)               pvcontents
+xio_fmt_gv     *(SV**)&IoFMT_GV(bstate->bs_sv)         svindex
+xio_bottom_name        IoBOTTOM_NAME(bstate->bs_sv)            pvcontents
+xio_bottom_gv  *(SV**)&IoBOTTOM_GV(bstate->bs_sv)      svindex
+xio_subprocess IoSUBPROCESS(bstate->bs_sv)             short
+xio_type       IoTYPE(bstate->bs_sv)                   char
+xio_flags      IoFLAGS(bstate->bs_sv)                  char
+xcv_stash      *(SV**)&CvSTASH(bstate->bs_sv)          svindex
+xcv_start      CvSTART(bstate->bs_sv)                  opindex
+xcv_root       CvROOT(bstate->bs_sv)                   opindex
+xcv_gv         *(SV**)&CvGV(bstate->bs_sv)             svindex
+xcv_file       CvFILE(bstate->bs_sv)                   pvindex
+xcv_depth      CvDEPTH(bstate->bs_sv)                  long
+xcv_padlist    *(SV**)&CvPADLIST(bstate->bs_sv)        svindex
+xcv_outside    *(SV**)&CvOUTSIDE(bstate->bs_sv)        svindex
+xcv_flags      CvFLAGS(bstate->bs_sv)                  U16
+av_extend      bstate->bs_sv                           SSize_t         x
+av_push                bstate->bs_sv                           svindex         x
+xav_fill       AvFILLp(bstate->bs_sv)                  SSize_t
+xav_max                AvMAX(bstate->bs_sv)                    SSize_t
+xav_flags      AvFLAGS(bstate->bs_sv)                  U8
+xhv_riter      HvRITER(bstate->bs_sv)                  I32
+xhv_name       HvNAME(bstate->bs_sv)                   pvcontents
+hv_store       bstate->bs_sv                           svindex         x
+sv_magic       bstate->bs_sv                           char            x
+mg_obj         SvMAGIC(bstate->bs_sv)->mg_obj          svindex
+mg_private     SvMAGIC(bstate->bs_sv)->mg_private      U16
+mg_flags       SvMAGIC(bstate->bs_sv)->mg_flags        U8
+mg_pv          SvMAGIC(bstate->bs_sv)                  pvcontents      x
+xmg_stash      *(SV**)&SvSTASH(bstate->bs_sv)          svindex
+gv_fetchpv     bstate->bs_sv                           strconst        x
+gv_stashpv     bstate->bs_sv                           strconst        x
+gp_sv          GvSV(bstate->bs_sv)                     svindex
+gp_refcnt      GvREFCNT(bstate->bs_sv)                 U32
+gp_refcnt_add  GvREFCNT(bstate->bs_sv)                 I32             x
+gp_av          *(SV**)&GvAV(bstate->bs_sv)             svindex
+gp_hv          *(SV**)&GvHV(bstate->bs_sv)             svindex
+gp_cv          *(SV**)&GvCV(bstate->bs_sv)             svindex
+gp_file                GvFILE(bstate->bs_sv)                   pvindex
+gp_io          *(SV**)&GvIOp(bstate->bs_sv)            svindex
+gp_form                *(SV**)&GvFORM(bstate->bs_sv)           svindex
+gp_cvgen       GvCVGEN(bstate->bs_sv)                  U32
+gp_line                GvLINE(bstate->bs_sv)                   line_t
+gp_share       bstate->bs_sv                           svindex         x
+xgv_flags      GvFLAGS(bstate->bs_sv)                  U8
+op_next                PL_op->op_next                          opindex
+op_sibling     PL_op->op_sibling                       opindex
+op_ppaddr      PL_op->op_ppaddr                        strconst        x
+op_targ                PL_op->op_targ                          PADOFFSET
+op_type                PL_op                                   OPCODE          x
+op_seq         PL_op->op_seq                           U16
+op_flags       PL_op->op_flags                         U8
+op_private     PL_op->op_private                       U8
+op_first       cUNOP->op_first                         opindex
+op_last                cBINOP->op_last                         opindex
+op_other       cLOGOP->op_other                        opindex
+op_children    cLISTOP->op_children                    U32
+op_pmreplroot  cPMOP->op_pmreplroot                    opindex
+op_pmreplrootgv        *(SV**)&cPMOP->op_pmreplroot            svindex
+op_pmreplstart cPMOP->op_pmreplstart                   opindex
+op_pmnext      *(OP**)&cPMOP->op_pmnext                opindex
+pregcomp       PL_op                                   pvcontents      x
+op_pmflags     cPMOP->op_pmflags                       U16
+op_pmpermflags cPMOP->op_pmpermflags                   U16
+op_sv          cSVOP->op_sv                            svindex
+op_padix       cPADOP->op_padix                        PADOFFSET
+op_pv          cPVOP->op_pv                            pvcontents
+op_pv_tr       cPVOP->op_pv                            op_tr_array
+op_redoop      cLOOP->op_redoop                        opindex
+op_nextop      cLOOP->op_nextop                        opindex
+op_lastop      cLOOP->op_lastop                        opindex
+cop_label      cCOP->cop_label                         pvindex
+cop_stashpv    cCOP                                    pvindex         x
+cop_file       cCOP                                    pvindex         x
+cop_seq                cCOP->cop_seq                           U32
+cop_arybase    cCOP->cop_arybase                       I32
+cop_line       cCOP                                    line_t          x
+cop_warnings   cCOP->cop_warnings                      svindex
+main_start     PL_main_start                           opindex
+main_root      PL_main_root                            opindex
+curpad         PL_curpad                               svindex         x
+push_begin     PL_beginav                              svindex         x
+push_init      PL_initav                               svindex         x
+push_end       PL_endav                                svindex         x