1 files changed, 108 insertions, 0 deletions
diff --git a/util/genprof/genprof.c b/util/genprof/genprof.c
new file mode 100644
index 0000000000..9fc39da982
--- /dev/null
+++ b/util/genprof/genprof.c
@@ -0,0 +1,108 @@
+#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");
+	fo = fopen("gmon.out", "w+");
+
+	if ((f == NULL) || (fo == NULL)) {
+		fprintf(stderr, "Unable to manipulate with the input file\n");
+		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);
+	return 0;
+}