shithub: scc

Download patch

ref: a98aac17201df8612313d56b400094919b8deec8
parent: 5eaa64cb0a375db8c155b3af9bead075fd5dce98
author: Roberto E. Vargas Caballero <[email protected]>
date: Wed Sep 27 08:10:13 EDT 2017 

[as-x86] Use unified file for instructions

It is easier to use flags and filter with that flags
instead of creating individual files per cpu.


--- a/as/common.dat
+++ /dev/null
@@ -1,6 +1,0 @@
-# Tab 16, tabs 16, :set ts=16
-# op	args	size	bytes	format
-DB	imm8+	0	none	defb
-DW	imm16+	0	none	defw
-DD	imm32+	0	none	defd
-DQ	imm64+	0	none	defq
--- a/as/target/i386/target.mk
+++ b/as/target/i386/target.mk
@@ -1,15 +1,13 @@
-I386_TBL = common.dat \
-           target/x86/i386.dat
 
 target/i386/ins.o: target/i386/ins.h
 target/i386/instbl.o: target/i386/ins.h
 
-target/i386/instbl.c: target/x86/gen.awk $(I386_TBL)
+target/i386/instbl.c: target/x86/gen.awk target/x86/x86.dat
 	set -e ;\
 	rm -f $@;\
 	trap "rm -f $$$$.c" 0 2 3; \
-	cat $(I386_TBL) | \
-	awk -f target/x86/gen.awk > $$$$.c && mv $$$$.c $@
+	awk -v bits=BITS32 -f target/x86/gen.awk \
+		< target/x86/x86.dat > $$$$.c && mv $$$$.c $@
 
 OBJ-i386 = $(OBJ) \
 	target/i386/instbl.o \
--- a/as/target/x86/gen.awk
+++ b/as/target/x86/gen.awk
@@ -1,59 +1,65 @@
 
-BEGIN	{
-	FS = "\t"
-	printf "#include \"../../../inc/scc.h\"\n"\
-	       "#include \"../../as.h\"\n"\
-	       "#include \"../x86/proc.h\"\n"\
-	       "#include \"ins.h\"\n\n"
-	nop = 0; nvar = 0
+BEGIN		{
+		print "bits=",bits > "/dev/stderr"
+		FS = "\t"
+		printf "#include \"../../../inc/scc.h\"\n"\
+		       "#include \"../../as.h\"\n"\
+		       "#include \"../x86/proc.h\"\n"\
+		       "#include \"ins.h\"\n\n"
+		nop = 0; nvar = 0
 }
-	{sub(/#.*/,"")}
-/^$/	{next}
-	{
-	if (opstart[$1] == 0) {
-		opstart[$1] = nvar
-		opnames[nop++] = $1
-	}
-	opcount[$1]++
-	opargs[nvar] = $2
-	opsize[nvar] = $3
-	opbytes[nvar] = ($4 == "none") ? "" : $4
-	opformat[nvar++] = $5
-	formats[$5] = 1
+		{sub(/#.*/,"")}
+
+$6 !~ bits	{next}
+
+/^$/		{next}
+
+		{
+		if (opstart[$1] == 0) {
+			opstart[$1] = nvar
+			opnames[nop++] = $1
+		}
+		opcount[$1]++
+		opargs[nvar] = $2
+		opsize[nvar] = $3
+		opbytes[nvar] = ($4 == "none") ? "" : $4
+		opformat[nvar++] = $5
+		formats[$5] = 1
 }
-END	{
-	for (i in formats)
-		printf "Format %s;\n", i
+END		{
+		for (i in formats)
+			printf "Format %s;\n", i
 
-	printf "int nr_ins = %d;\n\n", nop
-	print "struct ins instab[] = {"
-	for (i = 0; i < nop; i++) {
-		n = opnames[i]
-		start = opstart[n]
-		end = start + opcount[n]
-		printf "\t{.str = \"%s\", .begin = %d, .end = %d},\n",
-		       n, start, end | "sort"
-	}
-	close("sort")
-	printf "};\n\n"
+		printf "int nr_ins = %d;\n\n", nop
+		print "struct ins instab[] = {"
+		for (i = 0; i < nop; i++) {
+			n = opnames[i]
+			start = opstart[n]
+			end = start + opcount[n]
+			printf "\t{.str = \"%s\", .begin = %d, .end = %d},\n",
+			       n, start, end | "sort"
+		}
+		close("sort")
+		printf "};\n\n"
 
-	print "struct op optab[] = {"
-	for (i = 0; i < nvar; i++) {
-		printf "\t{\n" \
-		       "\t\t.size = %d,\n"\
-		       "\t\t.format = %s,\n",
-		       opsize[i], opformat[i]
+		print "struct op optab[] = {"
+		for (i = 0; i < nvar; i++) {
+			printf "\t{\n" \
+			       "\t\t.size = %d,\n"\
+			       "\t\t.format = %s,\n",
+			       opsize[i], opformat[i]
 
-		if (opbytes[i] != "")
-			printf "\t\t.bytes = (char []) {%s},\n", opbytes[i]
+			if (opbytes[i] != "")
+				printf "\t\t.bytes = (char []) {%s},\n",
+				        opbytes[i]
 
-		a = str2args(opargs[i])
-		if (a != "")
-			printf "\t\t.args = (char []) {%s}\n", a
+			a = str2args(opargs[i])
+			if (a != "")
+				printf "\t\t.args = (char []) {%s}\n", a
 
-		print "\t},"
-	}
-	print "};"
+			print "\t},"
+		}
+		print "};"
 }
 
 function str2args(s, args, i, out)
--- a/as/target/x86/i386.dat
+++ /dev/null
@@ -1,5 +1,0 @@
-# Tab 16, tabs 16, :set ts=16
-# op	args	size	bytes	format
-EQU	imm32	0	none	equ
-NOP	none	1	0x90	direct
-RET	none	1	0xc3	direct
--- /dev/null
+++ b/as/target/x86/x86.dat
@@ -1,0 +1,11 @@
+# Tab 16, tabs 16, :set ts=16
+# op	args	size	bytes	format	cpu
+DB	imm8+	0	none	defb	BITS16,BITS32,BITS64
+DW	imm16+	0	none	defw	BITS16,BITS32,BITS64
+DD	imm32+	0	none	defd	BITS16,BITS32,BITS64
+DQ	imm64+	0	none	defq	BITS16,BITS32,BITS64
+EQU	imm16	0	none	equ	BITS16
+EQU	imm32	0	none	equ	BITS32
+EQU	imm64	0	none	equ	BITS64
+NOP	none	1	0x90	direct	BITS16,BITS32,BITS64
+RET	none	1	0xc3	direct	BITS16,BITS32,BITS64