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topology: Quit and show error message on big-endian machines

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This tool can only support little-endian machines atm.
Many codes directly refer to  __le32/__le64 variables of ABI objects,
so will be broken on big-endian machines.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2015-11-19 03:33:12 -05:00 • committed by Takashi Iwai
parent cde9a37c06
commit b917a0c0a8
2 changed files with 17 additions and 0 deletions
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15
src/topology/parser.c
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@ -371,10 +371,25 @@ void snd_tplg_verbose(snd_tplg_t *tplg, int verbose)
tplg->verbose = verbose; tplg->verbose = verbose;
} }
static bool is_little_endian(void)
{
#ifdef __BYTE_ORDER
#if __BYTE_ORDER == __LITTLE_ENDIAN
return true;
#endif
#endif
return false;
}
snd_tplg_t *snd_tplg_new(void) snd_tplg_t *snd_tplg_new(void)
{ {
snd_tplg_t *tplg; snd_tplg_t *tplg;
if (!is_little_endian()) {
SNDERR("error: cannot support big-endian machines\n");
return NULL;
}
tplg = calloc(1, sizeof(snd_tplg_t)); tplg = calloc(1, sizeof(snd_tplg_t));
if (!tplg) if (!tplg)
return NULL; return NULL;

2
src/topology/tplg_local.h
View file

@ -12,6 +12,8 @@
#include <limits.h> #include <limits.h>
#include <stdint.h> #include <stdint.h>
#include <stdbool.h>
#include <endian.h>
#include <linux/types.h> #include <linux/types.h>
#include "local.h" #include "local.h"