diff options
Diffstat (limited to 'as')
| -rw-r--r-- | as/Makefile | 11 | ||||
| -rw-r--r-- | as/as.l | 25 | ||||
| -rw-r--r-- | as/as.y | 36 | ||||
| -rw-r--r-- | as/x86.h | 38 |
4 files changed, 110 insertions, 0 deletions
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 @@ -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; } + +. ; @@ -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 }, |