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