pnx/m16vm
1
0
Fork 0
mirror of https://github.com/pnx/m16vm synced 2026-06-16 03:44:55 +02:00
Code Releases Activity

asm: lexer.c: read_string() move all strings into a table

Browse source
This commit is contained in:
Henrik Hautakoski 2018-12-11 17:53:55 +01:00
parent 0a91644879
commit 3513662ad8
No known key found for this signature in database
GPG key ID: 839F3A7EAFAEAFAA
1 changed files with 25 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

46
src/as/lexer.c
View file

@ -26,6 +26,25 @@
#define space(x) ((x) == ' ' || (x) == '\t' || (x) == '\r')
struct opcode_ent {
char * name;
uint8_t code;
};
static const struct opcode_ent opcode_table[] = {
{ "noop", TOKEN_OPCODE_NOOP },
{ "add" , TOKEN_OPCODE_ADD },
{ "movl", TOKEN_OPCODE_MOVL },
{ "movh", TOKEN_OPCODE_MOVH },
{ "ld" , TOKEN_OPCODE_LD },
{ "sw" , TOKEN_OPCODE_SW },
{ "beq" , TOKEN_OPCODE_BEQ },
{ "jmp" , TOKEN_OPCODE_JMP },
{ "jr" , TOKEN_OPCODE_JR },
{ "int" , TOKEN_OPCODE_INT },
{ NULL , 0 },
};
/**
* Helper functions
*/
@ -90,28 +109,13 @@ static int read_string(FILE *fp, char *buf, size_t len) {
}
buf[i] = '\0';
if (label_decl) {
if (label_decl)
return TOKEN_LABEL_DECL;
} else if (!strcmp("noop", buf)) {
return TOKEN_OPCODE_NOOP;
} else if (!strcmp("add", buf)) {
return TOKEN_OPCODE_ADD;
} else if (!strcmp("movl", buf)) {
return TOKEN_OPCODE_MOVL;
} else if (!strcmp("movh", buf)) {
return TOKEN_OPCODE_MOVH;
} else if (!strcmp("ld", buf)) {
return TOKEN_OPCODE_LD;
} else if (!strcmp("sw", buf)) {
return TOKEN_OPCODE_SW;
} else if (!strcmp("beq", buf)) {
return TOKEN_OPCODE_BEQ;
} else if (!strcmp("jmp", buf)) {
return TOKEN_OPCODE_JMP;
} else if (!strcmp("jr", buf)) {
return TOKEN_OPCODE_JR;
} else if (!strcmp("int", buf)) {
return TOKEN_OPCODE_INT;
for(i = 0; opcode_table[i].name; i++) {
if (!strcmp(opcode_table[i].name, buf))
return opcode_table[i].code;
}
return TOKEN_LABEL;
}