X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=bytecode.pl;h=bc527bb64518fc03ed6caecd78a7544c0cf03e12;hb=b55685ae0907b7da1c668988d736c684531f41ac;hp=4b00e14b9a11e2961260e143de31cf4075bbb1a1;hpb=847a5fae45dac396d0f9e1bb61d5b4ff9d94cdcd;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/bytecode.pl b/bytecode.pl
index 4b00e14..bc527bb 100644
--- a/bytecode.pl
+++ b/bytecode.pl
@@ -1,12 +1,13 @@
 BEGIN {
   push @INC, './lib';
+  require 'regen_lib.pl';
 }
 use strict;
 my %alias_to = (
-    U32 => [qw(PADOFFSET STRLEN)],
-    I32 => [qw(SSize_t long)],
-    U16 => [qw(OPCODE line_t short)],
-    U8 => [qw(char)],
+    U32 => [qw(line_t)],
+    PADOFFSET => [qw(STRLEN SSize_t)],
+    U16 => [qw(OPCODE short)],
+    U8  => [qw(char)],
 );
 
 my @optype= qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP);
@@ -21,7 +22,8 @@ while (($from, $tos) = each %alias_to) {
 }
 
 my $c_header = <<'EOT';
-/*
+/* -*- buffer-read-only: t -*-
+ *
  *      Copyright (c) 1996-1999 Malcolm Beattie
  *
  *      You may distribute under the terms of either the GNU General Public
@@ -36,14 +38,18 @@ EOT
 my $perl_header;
 ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
 
-unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm";
+safer_unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm";
 
 #
 # Start with boilerplate for Asmdata.pm
 #
 open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
+binmode ASMDATA_PM;
 print ASMDATA_PM $perl_header, <<'EOT';
 package B::Asmdata;
+
+our $VERSION = '1.01';
+
 use Exporter;
 @ISA = qw(Exporter);
 @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
@@ -63,6 +69,7 @@ EOT
 # Boilerplate for byterun.c
 #
 open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!";
+binmode BYTERUN_C;
 print BYTERUN_C $c_header, <<'EOT';
 
 #define PERL_NO_GET_CONTEXT
@@ -71,13 +78,6 @@ print BYTERUN_C $c_header, <<'EOT';
 #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"
 
@@ -93,7 +93,7 @@ print BYTERUN_C <<'EOT';
 };
 
 void *
-bset_obj_store(pTHXo_ struct byteloader_state *bstate, void *obj, I32 ix)
+bset_obj_store(pTHX_ struct byteloader_state *bstate, void *obj, I32 ix)
 {
     if (ix > bstate->bs_obj_list_fill) {
 	Renew(bstate->bs_obj_list, ix + 32, void*);
@@ -103,9 +103,10 @@ bset_obj_store(pTHXo_ struct byteloader_state *bstate, void *obj, I32 ix)
     return obj;
 }
 
-void
-byterun(pTHXo_ register struct byteloader_state *bstate)
+int
+byterun(pTHX_ register struct byteloader_state *bstate)
 {
+    dVAR;
     register int insn;
     U32 ix;
     SV *specialsv_list[6];
@@ -113,10 +114,12 @@ byterun(pTHXo_ register struct byteloader_state *bstate)
     BYTECODE_HEADER_CHECK;	/* croak if incorrect platform */
     New(666, bstate->bs_obj_list, 32, void*); /* set op objlist */
     bstate->bs_obj_list_fill = 31;
+    bstate->bs_obj_list[0] = NULL; /* first is always Null */
+    bstate->bs_ix = 1;
 
 EOT
 
-for (my $i = 0; $i < @specialsv; $i++) {
+for my $i ( 0 .. $#specialsv ) {
     print BYTERUN_C "    specialsv_list[$i] = $specialsv[$i];\n";
 }
 
@@ -130,8 +133,11 @@ EOT
 my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
 
 while (<DATA>) {
+    if (/^\s*#/) {
+	print BYTERUN_C if /^\s*#\s*(?:if|endif|el)/;
+	next;
+    }
     chop;
-    s/#.*//;			# remove comments
     next unless length;
     if (/^%number\s+(.*)/) {
 	$insn_num = $1;
@@ -141,6 +147,10 @@ while (<DATA>) {
 	next;
     }
     ($insn, $lvalue, $argtype, $flags) = split;
+    my $rvalcast = '';
+    if ($argtype =~ m:(.+)/(.+):) {
+	($rvalcast, $argtype) = ("($1)", $2);
+    }
     $insn_name[$insn_num] = $insn;
     $fundtype = $alias_from{$argtype} || $argtype;
 
@@ -160,7 +170,7 @@ while (<DATA>) {
 	print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
     }
     elsif ($optarg && $lvalue ne "none") {
-	print BYTERUN_C "\t\t$lvalue = arg;\n";
+	print BYTERUN_C "\t\t$lvalue = ${rvalcast}arg;\n";
     }
     print BYTERUN_C "\t\tbreak;\n\t    }\n";
 
@@ -184,13 +194,17 @@ print BYTERUN_C <<'EOT';
 	    /* NOTREACHED */
 	}
     }
+    return 0;
 }
+
+/* ex: set ro: */
 EOT
 
 #
 # Write the instruction and optype enum constants into byterun.h
 #
 open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!";
+binmode BYTERUN_H;
 print BYTERUN_H $c_header, <<'EOT';
 struct byteloader_fdata {
     SV	*datasv;
@@ -198,25 +212,31 @@ struct byteloader_fdata {
     int	idx;
 };
 
+struct byteloader_pv_state {
+    char			*pvx;
+    XPV				xpv;
+};
+
 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_ix;
+    struct byteloader_pv_state	bs_pv;
     int				bs_iv_overflows;
 };
 
 int bl_getc(struct byteloader_fdata *);
 int bl_read(struct byteloader_fdata *, char *, size_t, size_t);
-extern void byterun(pTHXo_ struct byteloader_state *);
+extern int byterun(pTHX_ struct byteloader_state *);
 
 enum {
 EOT
 
 my $add_enum_value = 0;
 my $max_insn;
-for ($i = 0; $i < @insn_name; $i++) {
+for $i ( 0 .. $#insn_name ) {
     $insn = uc($insn_name[$i]);
     if (defined($insn)) {
 	$max_insn = $i;
@@ -239,6 +259,8 @@ for ($i = 0; $i < @optype - 1; $i++) {
 }
 printf BYTERUN_H "    OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
 
+print BYTERUN_H "/* ex: set ro: */\n";
+
 #
 # Finish off insn_data and create array initialisers in Asmdata.pm
 #
@@ -261,19 +283,68 @@ B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
 
 =head1 SYNOPSIS
 
-	use Asmdata;
+	use B::Asmdata qw(%insn_data @insn_name @optype @specialsv_name);
 
 =head1 DESCRIPTION
 
-See F<ext/B/B/Asmdata.pm>.
+Provides information about Perl ops in order to generate bytecode via
+a bunch of exported variables.  Its mostly used by B::Assembler and
+B::Disassembler.
+
+=over 4
+
+=item %insn_data
+
+  my($bytecode_num, $put_sub, $get_meth) = @$insn_data{$op_name};
+
+For a given $op_name (for example, 'cop_label', 'sv_flags', etc...) 
+you get an array ref containing the bytecode number of the op, a
+reference to the subroutine used to 'PUT', and the name of the method
+used to 'GET'.
+
+=for _private
+Add more detail about what $put_sub and $get_meth are and how to use them.
+
+=item @insn_name
+
+  my $op_name = $insn_name[$bytecode_num];
+
+A simple mapping of the bytecode number to the name of the op.
+Suitable for using with %insn_data like so:
+
+  my $op_info = $insn_data{$insn_name[$bytecode_num]};
+
+=item @optype
+
+  my $op_type = $optype[$op_type_num];
+
+A simple mapping of the op type number to its type (like 'COP' or 'BINOP').
+
+=item @specialsv_name
+
+  my $sv_name = $specialsv_name[$sv_index];
+
+Certain SV types are considered 'special'.  They're represented by
+B::SPECIAL and are refered to by a number from the specialsv_list.
+This array maps that number back to the name of the SV (like 'Nullsv'
+or '&PL_sv_undef').
+
+=back
 
 =head1 AUTHOR
 
 Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
 
 =cut
+
+# ex: set ro:
 EOT
 
+
+close ASMDATA_PM or die "Error closing ASMDATA_PM: $!";
+close BYTERUN_H or die "Error closing BYTERUN_H: $!";
+close BYTERUN_C or die "Error closing BYTERUN_C: $!";
+
 __END__
 # First set instruction ord("#") to read comment to end-of-line (sneaky)
 %number 35
@@ -281,10 +352,13 @@ comment		arg			comment_t
 # Then make ord("\n") into a no-op
 %number 10
 nop		none			none
+
 # Now for the rest of the ordinary ones, beginning with \0 which is
 # ret so that \0-terminated strings can be read properly as bytecode.
 %number 0
 #
+# The argtype is either a single type or "rightvaluecast/argtype".
+#
 #opcode		lvalue					argtype		flags	
 #
 ret		none					none		x
@@ -292,23 +366,27 @@ 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
+stpv		bstate->bs_pv.pvx			U32		x
 ldspecsv	bstate->bs_sv				U8		x
+ldspecsvx	bstate->bs_sv				U8		x
 newsv		bstate->bs_sv				U8		x
+newsvx		bstate->bs_sv				U32		x
 newop		PL_op					U8		x
+newopx		PL_op					U16		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
+pv_cur		bstate->bs_pv.xpv.xpv_cur		STRLEN
+pv_free		bstate->bs_pv.pvx			none		x
+sv_upgrade	bstate->bs_sv				U8		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
+xrv		bstate->bs_sv				svindex		x
 xpv		bstate->bs_sv				none		x
-xiv32		SvIVX(bstate->bs_sv)			I32
-xiv64		SvIVX(bstate->bs_sv)			IV64
-xnv		SvNVX(bstate->bs_sv)			NV
+xpv_cur		bstate->bs_sv	 			STRLEN		x
+xpv_len		bstate->bs_sv				STRLEN		x
+xiv		bstate->bs_sv				IV		x
+xnv		bstate->bs_sv				NV		x
 xlv_targoff	LvTARGOFF(bstate->bs_sv)		STRLEN
 xlv_targlen	LvTARGLEN(bstate->bs_sv)		STRLEN
 xlv_targ	LvTARG(bstate->bs_sv)			svindex
@@ -316,20 +394,21 @@ 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
+xfm_lines	FmLINES(bstate->bs_sv)			IV
+xio_lines	IoLINES(bstate->bs_sv)			IV
+xio_page	IoPAGE(bstate->bs_sv)			IV
+xio_page_len	IoPAGE_LEN(bstate->bs_sv)		IV
+xio_lines_left	IoLINES_LEFT(bstate->bs_sv)	       	IV
+xio_top_name	IoTOP_NAME(bstate->bs_sv)		pvindex
 xio_top_gv	*(SV**)&IoTOP_GV(bstate->bs_sv)		svindex
-xio_fmt_name	IoFMT_NAME(bstate->bs_sv)		pvcontents
+xio_fmt_name	IoFMT_NAME(bstate->bs_sv)		pvindex
 xio_fmt_gv	*(SV**)&IoFMT_GV(bstate->bs_sv)		svindex
-xio_bottom_name	IoBOTTOM_NAME(bstate->bs_sv)		pvcontents
+xio_bottom_name	IoBOTTOM_NAME(bstate->bs_sv)		pvindex
 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_xsubany	*(SV**)&CvXSUBANY(bstate->bs_sv).any_ptr	svindex
 xcv_stash	*(SV**)&CvSTASH(bstate->bs_sv)		svindex
 xcv_start	CvSTART(bstate->bs_sv)			opindex
 xcv_root	CvROOT(bstate->bs_sv)			opindex
@@ -338,23 +417,27 @@ 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_outside_seq	CvOUTSIDE_SEQ(bstate->bs_sv)		U32
 xcv_flags	CvFLAGS(bstate->bs_sv)			U16
 av_extend	bstate->bs_sv				SSize_t		x
+av_pushx	bstate->bs_sv				svindex		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
+xhv_name	bstate->bs_sv				pvindex		x
 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
+mg_name		SvMAGIC(bstate->bs_sv)			pvcontents	x
+mg_namex	SvMAGIC(bstate->bs_sv)			svindex		x
+xmg_stash	bstate->bs_sv				svindex		x
 gv_fetchpv	bstate->bs_sv				strconst	x
+gv_fetchpvx	bstate->bs_sv				strconst	x
 gv_stashpv	bstate->bs_sv				strconst	x
+gv_stashpvx	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
@@ -373,19 +456,27 @@ 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_opt		PL_op->op_opt				U8
+op_static	PL_op->op_static			U8
 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_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
+#ifdef USE_ITHREADS
+op_pmstashpv	cPMOP					pvindex		x
+op_pmreplrootpo	cPMOP->op_pmreplroot			OP*/PADOFFSET
+#else
+op_pmstash	*(SV**)&cPMOP->op_pmstash		svindex
+op_pmreplrootgv	*(SV**)&cPMOP->op_pmreplroot		svindex
+#endif
 pregcomp	PL_op					pvcontents	x
 op_pmflags	cPMOP->op_pmflags			U16
 op_pmpermflags	cPMOP->op_pmpermflags			U16
+op_pmdynflags	cPMOP->op_pmdynflags			U8
 op_sv		cSVOP->op_sv				svindex
 op_padix	cPADOP->op_padix			PADOFFSET
 op_pv		cPVOP->op_pv				pvcontents
@@ -394,15 +485,36 @@ op_redoop	cLOOP->op_redoop			opindex
 op_nextop	cLOOP->op_nextop			opindex
 op_lastop	cLOOP->op_lastop			opindex
 cop_label	cCOP->cop_label				pvindex
+#ifdef USE_ITHREADS
 cop_stashpv	cCOP					pvindex		x
 cop_file	cCOP					pvindex		x
+#else
+cop_stash	cCOP					svindex		x
+cop_filegv	cCOP					svindex		x
+#endif
 cop_seq		cCOP->cop_seq				U32
 cop_arybase	cCOP->cop_arybase			I32
-cop_line	cCOP					line_t		x
+cop_line	cCOP->cop_line				line_t
+cop_io		cCOP->cop_io				svindex
 cop_warnings	cCOP->cop_warnings			svindex
 main_start	PL_main_start				opindex
 main_root	PL_main_root				opindex
+main_cv		*(SV**)&PL_main_cv			svindex
 curpad		PL_curpad				svindex		x
 push_begin	PL_beginav				svindex		x
 push_init	PL_initav				svindex		x
 push_end	PL_endav				svindex		x
+curstash	*(SV**)&PL_curstash			svindex
+defstash	*(SV**)&PL_defstash			svindex
+data		none					U8		x
+incav		*(SV**)&GvAV(PL_incgv)			svindex
+load_glob	none					svindex		x
+#ifdef USE_ITHREADS
+regex_padav	*(SV**)&PL_regex_padav			svindex
+#endif
+dowarn		PL_dowarn				U8
+comppad_name	*(SV**)&PL_comppad_name			svindex
+xgv_stash	*(SV**)&GvSTASH(bstate->bs_sv)		svindex
+signal		bstate->bs_sv				strconst	x
+# to be removed
+formfeed	PL_formfeed				svindex