| Index: third_party/sqlite/sqlite-src-3080704/mkopcodeh.awk
|
| diff --git a/third_party/sqlite/sqlite-src-3080704/mkopcodeh.awk b/third_party/sqlite/sqlite-src-3080704/mkopcodeh.awk
|
| deleted file mode 100644
|
| index babfdc68d3247955b7cc3aa192b0b714588062ed..0000000000000000000000000000000000000000
|
| --- a/third_party/sqlite/sqlite-src-3080704/mkopcodeh.awk
|
| +++ /dev/null
|
| @@ -1,235 +0,0 @@
|
| -#!/usr/bin/awk -f
|
| -#
|
| -# Generate the file opcodes.h.
|
| -#
|
| -# This AWK script scans a concatenation of the parse.h output file from the
|
| -# parser and the vdbe.c source file in order to generate the opcodes numbers
|
| -# for all opcodes.
|
| -#
|
| -# The lines of the vdbe.c that we are interested in are of the form:
|
| -#
|
| -# case OP_aaaa: /* same as TK_bbbbb */
|
| -#
|
| -# The TK_ comment is optional. If it is present, then the value assigned to
|
| -# the OP_ is the same as the TK_ value. If missing, the OP_ value is assigned
|
| -# a small integer that is different from every other OP_ value.
|
| -#
|
| -# We go to the trouble of making some OP_ values the same as TK_ values
|
| -# as an optimization. During parsing, things like expression operators
|
| -# are coded with TK_ values such as TK_ADD, TK_DIVIDE, and so forth. Later
|
| -# during code generation, we need to generate corresponding opcodes like
|
| -# OP_Add and OP_Divide. By making TK_ADD==OP_Add and TK_DIVIDE==OP_Divide,
|
| -# code to translate from one to the other is avoided. This makes the
|
| -# code generator run (infinitesimally) faster and more importantly it makes
|
| -# the library footprint smaller.
|
| -#
|
| -# This script also scans for lines of the form:
|
| -#
|
| -# case OP_aaaa: /* jump, in1, in2, in3, out2-prerelease, out3 */
|
| -#
|
| -# When such comments are found on an opcode, it means that certain
|
| -# properties apply to that opcode. Set corresponding flags using the
|
| -# OPFLG_INITIALIZER macro.
|
| -#
|
| -
|
| -
|
| -# Remember the TK_ values from the parse.h file
|
| -/^#define TK_/ {
|
| - tk[$2] = 0+$3 # tk[x] holds the numeric value for TK symbol X
|
| -}
|
| -
|
| -# Find "/* Opcode: " lines in the vdbe.c file. Each one introduces
|
| -# a new opcode. Remember which parameters are used.
|
| -/^.. Opcode: / {
|
| - currentOp = "OP_" $3
|
| - m = 0
|
| - for(i=4; i<=NF; i++){
|
| - x = $i
|
| - if( x=="P1" ) m += 1
|
| - if( x=="P2" ) m += 2
|
| - if( x=="P3" ) m += 4
|
| - if( x=="P4" ) m += 8
|
| - if( x=="P5" ) m += 16
|
| - }
|
| - paramused[currentOp] = m
|
| -}
|
| -
|
| -# Find "** Synopsis: " lines that follow Opcode:
|
| -/^.. Synopsis: / {
|
| - if( currentOp ){
|
| - x = $3
|
| - for(i=4; i<=NF; i++){
|
| - x = x " " $i
|
| - }
|
| - synopsis[currentOp] = x
|
| - }
|
| -}
|
| -
|
| -# Scan for "case OP_aaaa:" lines in the vdbe.c file
|
| -/^case OP_/ {
|
| - name = $2
|
| - sub(/:/,"",name)
|
| - sub("\r","",name)
|
| - op[name] = -1 # op[x] holds the numeric value for OP symbol x
|
| - jump[name] = 0
|
| - out2_prerelease[name] = 0
|
| - in1[name] = 0
|
| - in2[name] = 0
|
| - in3[name] = 0
|
| - out2[name] = 0
|
| - out3[name] = 0
|
| - for(i=3; i<NF; i++){
|
| - if($i=="same" && $(i+1)=="as"){
|
| - sym = $(i+2)
|
| - sub(/,/,"",sym)
|
| - val = tk[sym]
|
| - op[name] = val
|
| - used[val] = 1
|
| - sameas[val] = sym
|
| - def[val] = name
|
| - }
|
| - x = $i
|
| - sub(",","",x)
|
| - if(x=="jump"){
|
| - jump[name] = 1
|
| - }else if(x=="out2-prerelease"){
|
| - out2_prerelease[name] = 1
|
| - }else if(x=="in1"){
|
| - in1[name] = 1
|
| - }else if(x=="in2"){
|
| - in2[name] = 1
|
| - }else if(x=="in3"){
|
| - in3[name] = 1
|
| - }else if(x=="out2"){
|
| - out2[name] = 1
|
| - }else if(x=="out3"){
|
| - out3[name] = 1
|
| - }
|
| - }
|
| - order[n_op++] = name;
|
| -}
|
| -
|
| -# Assign numbers to all opcodes and output the result.
|
| -END {
|
| - cnt = 0
|
| - max = 0
|
| - print "/* Automatically generated. Do not edit */"
|
| - print "/* See the mkopcodeh.awk script for details */"
|
| - op["OP_Noop"] = -1;
|
| - order[n_op++] = "OP_Noop";
|
| - op["OP_Explain"] = -1;
|
| - order[n_op++] = "OP_Explain";
|
| -
|
| - # Assign small values to opcodes that are processed by resolveP2Values()
|
| - # to make code generation for the switch() statement smaller and faster.
|
| - for(i=0; i<n_op; i++){
|
| - name = order[i];
|
| - if( op[name]>=0 ) continue;
|
| - if( name=="OP_Function" \
|
| - || name=="OP_AggStep" \
|
| - || name=="OP_Transaction" \
|
| - || name=="OP_AutoCommit" \
|
| - || name=="OP_Savepoint" \
|
| - || name=="OP_Checkpoint" \
|
| - || name=="OP_Vacuum" \
|
| - || name=="OP_JournalMode" \
|
| - || name=="OP_VUpdate" \
|
| - || name=="OP_VFilter" \
|
| - || name=="OP_Next" \
|
| - || name=="OP_NextIfOpen" \
|
| - || name=="OP_SorterNext" \
|
| - || name=="OP_Prev" \
|
| - || name=="OP_PrevIfOpen" \
|
| - ){
|
| - cnt++
|
| - while( used[cnt] ) cnt++
|
| - op[name] = cnt
|
| - used[cnt] = 1
|
| - def[cnt] = name
|
| - }
|
| - }
|
| -
|
| - # Generate the numeric values for opcodes
|
| - for(i=0; i<n_op; i++){
|
| - name = order[i];
|
| - if( op[name]<0 ){
|
| - cnt++
|
| - while( used[cnt] ) cnt++
|
| - op[name] = cnt
|
| - used[cnt] = 1
|
| - def[cnt] = name
|
| - }
|
| - }
|
| - max = cnt
|
| - for(i=1; i<=max; i++){
|
| - if( !used[i] ){
|
| - def[i] = "OP_NotUsed_" i
|
| - }
|
| - printf "#define %-16s %3d", def[i], i
|
| - com = ""
|
| - if( sameas[i] ){
|
| - com = "same as " sameas[i]
|
| - }
|
| - x = synopsis[def[i]]
|
| - if( x ){
|
| - if( com=="" ){
|
| - com = "synopsis: " x
|
| - } else {
|
| - com = com ", synopsis: " x
|
| - }
|
| - }
|
| - if( com!="" ){
|
| - printf " /* %-42s */", com
|
| - }
|
| - printf "\n"
|
| - }
|
| -
|
| - # Generate the bitvectors:
|
| - #
|
| - # bit 0: jump
|
| - # bit 1: pushes a result onto stack
|
| - # bit 2: output to p1. release p1 before opcode runs
|
| - #
|
| - for(i=0; i<=max; i++){
|
| - name = def[i]
|
| - a0 = a1 = a2 = a3 = a4 = a5 = a6 = a7 = 0
|
| - if( jump[name] ) a0 = 1;
|
| - if( out2_prerelease[name] ) a1 = 2;
|
| - if( in1[name] ) a2 = 4;
|
| - if( in2[name] ) a3 = 8;
|
| - if( in3[name] ) a4 = 16;
|
| - if( out2[name] ) a5 = 32;
|
| - if( out3[name] ) a6 = 64;
|
| - bv[i] = a0+a1+a2+a3+a4+a5+a6+a7;
|
| - }
|
| - print "\n"
|
| - print "/* Properties such as \"out2\" or \"jump\" that are specified in"
|
| - print "** comments following the \"case\" for each opcode in the vdbe.c"
|
| - print "** are encoded into bitvectors as follows:"
|
| - print "*/"
|
| - print "#define OPFLG_JUMP 0x0001 /* jump: P2 holds jmp target */"
|
| - print "#define OPFLG_OUT2_PRERELEASE 0x0002 /* out2-prerelease: */"
|
| - print "#define OPFLG_IN1 0x0004 /* in1: P1 is an input */"
|
| - print "#define OPFLG_IN2 0x0008 /* in2: P2 is an input */"
|
| - print "#define OPFLG_IN3 0x0010 /* in3: P3 is an input */"
|
| - print "#define OPFLG_OUT2 0x0020 /* out2: P2 is an output */"
|
| - print "#define OPFLG_OUT3 0x0040 /* out3: P3 is an output */"
|
| - print "#define OPFLG_INITIALIZER {\\"
|
| - for(i=0; i<=max; i++){
|
| - if( i%8==0 ) printf("/* %3d */",i)
|
| - printf " 0x%02x,", bv[i]
|
| - if( i%8==7 ) printf("\\\n");
|
| - }
|
| - print "}"
|
| - if( 0 ){
|
| - print "\n/* Bitmask to indicate which fields (P1..P5) of each opcode are"
|
| - print "** actually used.\n*/"
|
| - print "#define OP_PARAM_USED_INITIALIZER {\\"
|
| - for(i=0; i<=max; i++){
|
| - if( i%8==0 ) printf("/* %3d */",i)
|
| - printf " 0x%02x,", paramused[def[i]]
|
| - if( i%8==7 ) printf("\\\n");
|
| - }
|
| - print "}"
|
| - }
|
| -}
|
|
|