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#include <stdio.h>
#include <uthash.h>
#include <sys/gmon_out.h>
#include <stdlib.h>
#define GMON_SEC "seconds s"
uint32_t mineip = 0xffffffff;
uint32_t maxeip = 0;
/* a hash structure to hold the arc */
struct arec {
uint32_t eip;
uint32_t from;
uint32_t count;
UT_hash_handle hh;
};
struct arec *arc = NULL;
void note_arc(uint32_t eip, uint32_t from)
{
struct arec *s;
HASH_FIND_INT(arc, &eip, s);
if (s == NULL) {
s = malloc(sizeof(struct arec));
s->eip = eip;
s->from = from;
s->count = 1;
if (eip > maxeip)
maxeip = eip;
if (eip < mineip)
maxeip = eip;
HASH_ADD_INT(arc, eip, s);
} else {
s->count++;
}
}
int main(int argc, char* argv[])
{
FILE *f, *fo;
struct arec *s;
uint32_t eip, from, tmp;
uint8_t tag;
uint16_t hit;
if (argc != 2) {
fprintf(stderr, "Please specify the coreboot trace log as parameter\n");
return 1;
}
f = fopen(argv[1], "r");
if (f == NULL) {
perror("Unable to open the input file");
return 1;
}
fo = fopen("gmon.out", "w+");
if (fo == NULL) {
perror("Unable to open the output file");
fclose(f);
return 1;
}
while (!feof(f)) {
if (fscanf(f, "~%x(%x)%*[^\n]\n", &eip, &from) == 2) {
note_arc(eip, from);
} else if (fscanf(f, "%*c~%x(%x)%*[^\n]\n", &eip, &from) == 2) {
note_arc(eip, from);
} else {
/* just drop a line */
tmp = fscanf(f, "%*[^\n]\n");
}
}
/* write gprof header */
fwrite(GMON_MAGIC, 1, sizeof(GMON_MAGIC) - 1, fo);
tmp = GMON_VERSION;
fwrite(&tmp, 1, sizeof(tmp), fo);
tmp = 0;
fwrite(&tmp, 1, sizeof(tmp), fo);
fwrite(&tmp, 1, sizeof(tmp), fo);
fwrite(&tmp, 1, sizeof(tmp), fo);
/* write fake histogram */
tag = GMON_TAG_TIME_HIST;
fwrite(&tag, 1, sizeof(tag), fo);
fwrite(&mineip, 1, sizeof(mineip), fo);
fwrite(&maxeip, 1, sizeof(maxeip), fo);
/* size of histogram */
tmp = 1;
fwrite(&tmp, 1, sizeof(tmp), fo);
/* prof rate */
tmp = 1000;
fwrite(&tmp, 1, sizeof(tmp), fo);
fwrite(GMON_SEC, 1, sizeof(GMON_SEC) - 1, fo);
hit = 1;
fwrite(&hit, 1, sizeof(hit), fo);
/* write call graph data */
tag = GMON_TAG_CG_ARC;
for (s = arc; s != NULL; s = s->hh.next) {
fwrite(&tag, 1, sizeof(tag), fo);
fwrite(&s->from, 1, sizeof(s->from), fo);
fwrite(&s->eip, 1, sizeof(s->eip), fo);
fwrite(&s->count, 1, sizeof(s->count), fo);
}
fclose(fo);
fclose(f);
return 0;
}
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