From 39ecba0032be794a1f4d66f61e09e4910270330f Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Wed, 13 Mar 2019 21:05:34 -0400
Subject: migrate to gitlab

---
 as/Makefile | 11 +++++++++++
 as/as.l     | 25 +++++++++++++++++++++++++
 as/as.y     | 36 ++++++++++++++++++++++++++++++++++++
 as/x86.h    | 38 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 110 insertions(+)
 create mode 100644 as/Makefile
 create mode 100644 as/as.l
 create mode 100644 as/as.y
 create mode 100644 as/x86.h

(limited to 'as')

diff --git a/as/Makefile b/as/Makefile
new file mode 100644
index 0000000..99fe9de
--- /dev/null
+++ b/as/Makefile
@@ -0,0 +1,11 @@
+as: as.yy.o as.tab.o
+	c99 -o $@ as.yy.o as.tab.o -ly -ll
+
+as.yy.c: as.l as.tab.h
+	lex -t as.l > $@
+
+as.tab.h as.tab.c: as.y
+	yacc -d -b as as.y
+
+clean:
+	rm -f as *.o as.yy.c as.tab.c as.tab.h
diff --git a/as/as.l b/as/as.l
new file mode 100644
index 0000000..059b7c3
--- /dev/null
+++ b/as/as.l
@@ -0,0 +1,25 @@
+%{
+#include <inttypes.h>
+#include "as.tab.h"
+%}
+
+NONDIGIT	[_a-zA-Z]
+DIGIT		[0-9]
+IDENTIFIERS	[_a-zA-Z0-9]
+
+%x COMMENT
+
+%%
+
+{DIGIT}+	{ yylval.n = strtoumax(yytext, NULL, 10); return NUMBER; }
+
+{NONDIGIT}{IDENTIFIERS}* { yylval.s = yytext; return TOKEN; }
+
+:|,|\.		{ return yytext[0]; }
+\n		{ return NEWLINE; }
+
+;		{ BEGIN COMMENT; }
+<COMMENT>.	;
+<COMMENT>\n	{ BEGIN INITIAL; return NEWLINE; }
+
+.		;
diff --git a/as/as.y b/as/as.y
new file mode 100644
index 0000000..ed8714f
--- /dev/null
+++ b/as/as.y
@@ -0,0 +1,36 @@
+%{
+#include <inttypes.h>
+%}
+
+%union {
+	char *s;
+	uintmax_t n;
+};
+
+%token<n> NUMBER
+%token<s> TOKEN
+%token NEWLINE
+
+%%
+
+program
+	: /* empty */
+	| instruction NEWLINE
+;
+
+instruction
+	: bare_instruction
+	| TOKEN ':' bare_instruction
+;
+
+bare_instruction
+	: TOKEN
+	| TOKEN operand
+	| TOKEN operand ',' operand
+	| TOKEN operand ',' operand ',' operand
+;
+
+operand
+	: TOKEN
+	| NUMBER
+;
diff --git a/as/x86.h b/as/x86.h
new file mode 100644
index 0000000..56bf639
--- /dev/null
+++ b/as/x86.h
@@ -0,0 +1,38 @@
+struct {
+const char *mnemonic;
+const char *opcode;
+char x32;
+char x64;
+} x86_opcodes[] = {
+{ "aaa",	"37", 1, 0 },
+
+{ "aad",	"d5 0a", 1, 0 },
+{ "aad imm8",	"db ib", 1, 0 },
+
+{ "aam",	"d4 0a", 1, 0 },
+{ "aam imm8",	"d4 ib", 1, 0 },
+
+{ "aas",	"3f" , 1, 0 },
+
+{ "adc al, imm8",	"14 ib", 1, 1 },
+{ "adc ax, immm16",	"15 iw", 1, 1 },
+{ "adc eax, imm32",	"15 id", 1, 1 },
+{ "adc rax, imm32",	"rex.w 15 id", 0, 1 },
+{ "adc r/m8, imm8",	"80 /2 ib",  1, 1 },
+{ "adc r/m8*, imm8",	"rex 80 /2 ib", 0, 1 },
+{ "adc r/m16, imm16",	"81 /2 iw", 1, 1 },
+{ "adc r/m32, imm32",	"81 /2 id", 1, 1 },
+{ "adc r/m64, imm32",	"rex.w 81 /2 id", 0, 1 },
+{ "adc r/m16, imm8",	"83 /2 ib", 1, 1 },
+{ "adc r/m32, imm8",	"83 /2 ib", 1, 1 },
+{ "adc r/m64, imm8",	"rex.w 83 /2 ib", 0, 1 },
+{ "adc r/m8, r8",	"10 /r", 1, 1 },
+{ "adc r/m8*, r8*",	"rex 10 /r", 0, 1 },
+{ "adc r/m16, r16",	"11 /r", 1, 1 },
+{ "adc r/m32, r32",	"11 /r", 1, 1 },
+{ "adc r/m64, r64",	"rex.w 11 /r", 0, 1 },
+{ "adc r8, r/m8",	"12 /r", 1, 1 },
+{ "adc r8*, r/m8*",	"rex 12 /r", 0, 1 },
+{ "adc r16, r/m16",	"13 /r", 1, 1 },
+{ "adc r32, r/m32",	"13 /r", 1, 1 },
+{ "adc r64, r/m64",	"rex.w 13 /r", 0, 1 },
-- 
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