target: write gmon.out according to target endianness

After profiling gmon.out was being written in little endian format only
which would cause gprof to issue and error and exit on big endian targets.

Change-Id: I526a40adae0f9a439fc5b77cef30fda228198b48
Signed-off-by: Jose de Sousa <jose.t.de.sousa@gmail.com>
Reviewed-on: http://openocd.zylin.com/2168
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>

1 files changed, 15 insertions, 17 deletions

diff --git a/src/target/target.c b/src/target/target.c
index af5c5b93..c2408b27 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -3520,14 +3520,12 @@ static void writeData(FILE *f, const void *data, size_t len)
 		LOG_ERROR("failed to write %zu bytes: %s", len, strerror(errno));
 }
 
-static void writeLong(FILE *f, int l)
+static void writeLong(FILE *f, int l, struct target *target)
 {
-	int i;
-	for (i = 0; i < 4; i++) {
-		char c = (l >> (i*8))&0xff;
-		writeData(f, &c, 1);
-	}
+	uint8_t val[4];
 
+	target_buffer_set_u32(target, val, l);
+	writeData(f, val, 4);
 }
 
 static void writeString(FILE *f, char *s)
@@ -3538,18 +3536,18 @@ static void writeString(FILE *f, char *s)
 typedef unsigned char UNIT[2];  /* unit of profiling */
 
 /* Dump a gmon.out histogram file. */
-static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filename,
-		bool with_range, uint32_t start_address, uint32_t end_address)
+static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filename, bool with_range,
+			uint32_t start_address, uint32_t end_address, struct target *target)
 {
 	uint32_t i;
 	FILE *f = fopen(filename, "w");
 	if (f == NULL)
 		return;
 	writeString(f, "gmon");
-	writeLong(f, 0x00000001); /* Version */
-	writeLong(f, 0); /* padding */
-	writeLong(f, 0); /* padding */
-	writeLong(f, 0); /* padding */
+	writeLong(f, 0x00000001, target); /* Version */
+	writeLong(f, 0, target); /* padding */
+	writeLong(f, 0, target); /* padding */
+	writeLong(f, 0, target); /* padding */
 
 	uint8_t zero = 0;  /* GMON_TAG_TIME_HIST */
 	writeData(f, &zero, 1);
@@ -3604,10 +3602,10 @@ static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filena
 	}
 
 	/* append binary memory gmon.out &profile_hist_hdr ((char*)&profile_hist_hdr + sizeof(struct gmon_hist_hdr)) */
-	writeLong(f, min);			/* low_pc */
-	writeLong(f, max);			/* high_pc */
-	writeLong(f, numBuckets);	/* # of buckets */
-	writeLong(f, 100);			/* KLUDGE! We lie, ca. 100Hz best case. */
+	writeLong(f, min, target);			/* low_pc */
+	writeLong(f, max, target);			/* high_pc */
+	writeLong(f, numBuckets, target);	/* # of buckets */
+	writeLong(f, 100, target);			/* KLUDGE! We lie, ca. 100Hz best case. */
 	writeString(f, "seconds");
 	for (i = 0; i < (15-strlen("seconds")); i++)
 		writeData(f, &zero, 1);
@@ -3699,7 +3697,7 @@ COMMAND_HANDLER(handle_profile_command)
 	}
 
 	write_gmon(samples, num_of_samples, CMD_ARGV[1],
-			with_range, start_address, end_address);
+		   with_range, start_address, end_address, target);
 	command_print(CMD_CTX, "Wrote %s", CMD_ARGV[1]);
 
 	free(samples);