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authorbernard <[email protected]>2017-11-02 13:50:42 +0800
committerbernard <[email protected]>2017-11-02 13:50:42 +0800
commitb2057f506a09e2adef81fc77efd697d16ae14bec (patch)
tree3affefabfe376a0ec1b3ac4a5eef957c1dd58dc8 /components/external/SQLite-3.8.1/mkopcodeh.awk
parent23582c8129228b4961ad35319cfd2d270039345f (diff)
[External] Remove external from RT-Thread
Diffstat (limited to 'components/external/SQLite-3.8.1/mkopcodeh.awk')
-rw-r--r--components/external/SQLite-3.8.1/mkopcodeh.awk183
1 files changed, 0 insertions, 183 deletions
diff --git a/components/external/SQLite-3.8.1/mkopcodeh.awk b/components/external/SQLite-3.8.1/mkopcodeh.awk
deleted file mode 100644
index 9685c3a0e8..0000000000
--- a/components/external/SQLite-3.8.1/mkopcodeh.awk
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@@ -1,183 +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
-}
-
-# 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_SorterNext" \
- || name=="OP_Prev" \
- ){
- 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 %-25s %15d", def[i], i
- if( sameas[i] ){
- printf " /* same as %-12s*/", sameas[i]
- }
- 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 "}"
-}