avrclock.c (WTFPL 2.0 license)

#include <stdio.h>
#include <string.h>

#define BUFSIZE	512

struct inst_clk {
	char *inst;
	char *avr_clk;
	char *lgt_clk;
};

static struct inst_clk inst_entry[] = {
	/* inst		AVR		LGT8x */
	{"adiw",	"2",		"1"},
	{"sbiw",	"2",		"1"},
	{"mul",		"2",		"1"},
	{"muls",	"2",		"1"},
	{"mulsu",	"2",		"1"},
	{"fmul",	"2",		"1"},
	{"fmuls",	"2",		"1"},
	{"fmulsu",	"2",		"1"},
	{"rjmp",	"2",		"1"},
	{"ijmp",	"2",		"1"},
	{"jmp",		"3",		NULL},
	{"rcall",	"3",		"1"},
	{"icall",	"3",		"1"},
	{"call",	"4",		NULL},
	{"ret",		"4",		"2"},
	{"reti",	"4",		"2"},
	{"cpse",	"1/2/3",	"1/2"},
	{"sbrc",	"1/2/3",	"1/2"},
	{"sbrs",	"1/2/3",	"1/2"},
	{"sbic",	"1/2/3",	"1/2"},
	{"sbis",	"1/2/3",	"1/2"},
	{"brbs",	"1/2",		NULL},
	{"brbc",	"1/2",		NULL},
	{"breq",	"1/2",		NULL},
	{"brne",	"1/2",		NULL},
	{"brcs",	"1/2",		NULL},
	{"brcc",	"1/2",		NULL},
	{"brsh",	"1/2",		NULL},
	{"brlo",	"1/2",		NULL},
	{"brmi",	"1/2",		NULL},
	{"brpl",	"1/2",		NULL},
	{"brge",	"1/2",		NULL},
	{"brlt",	"1/2",		NULL},
	{"brhs",	"1/2",		NULL},
	{"brhc",	"1/2",		NULL},
	{"brts",	"1/2",		NULL},
	{"brtc",	"1/2",		NULL},
	{"brvs",	"1/2",		NULL},
	{"brvc",	"1/2",		NULL},
	{"brie",	"1/2",		NULL},
	{"brid",	"1/2",		NULL},
	{"sbi",		"2",		NULL},
	{"cbi",		"2",		NULL},
	{"ld",		"2",		"1"},
	{"ldd",		"2",		"1"},
	{"lds",		"2",		NULL},
	{"st",		"2",		"1"},
	{"std",		"2",		"1"},
	{"sts",		"2",		NULL},
	{"lpm",		"3",		"2"},
	{"push",	"2",		"1"},
	{"pop",		"2",		"1"},
};

static char *get_clk(char *str, int mode)
{
	int i;

	for (i = 0; i < sizeof(inst_entry) / sizeof(struct inst_clk); i++) {
		if (!strcmp(str, inst_entry[i].inst)) {
			if (mode && inst_entry[i].lgt_clk != NULL)
				return inst_entry[i].lgt_clk;
			else
				return inst_entry[i].avr_clk;
		}
	}

	return NULL;
}

static char *find(char *str, int mode)
{
	char *p, *l, *r;
	char buf[BUFSIZE];

	strncpy(buf, str, sizeof(buf));

	for ((p = strtok_r(buf, " \t", &l)); p;
	     (p = strtok_r(NULL, " \t", &l))) {
		r = get_clk(p, mode);
		if (r != NULL)
			return r;
	}

	return "1";
}

int main(int argc, char *argv[])
{
	char *p;
	char buf[BUFSIZE];

	while (fgets(buf, sizeof(buf), stdin) != NULL) {
		p = strpbrk(buf, "\n\r");
		if (p != NULL)
			*p = '\0';

		p = strchr(buf, ':');
		if (p == NULL || !strlen(p + 1))
			p = "";
		else
			p = find(p + 1, argc > 1);

		printf("%-5s %s\n", p, buf);
	}

	return 0;
}