geemili
/
drm
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

intel: determine target endianness using meson 

The endianness of the target is currently determined based on
preprocessor symbols.  Unfortunately some symbols checked are wrong
(sparc64-linux-gnu-gcc does not define __BIG_ENDIAN__ or SPARC), and
several checks for big-endian architectures are missing.

Fix this by introducing a new preprocessor symbol HAVE_BIG_ENDIAN, which
is set based on meson's knowledge of the target endianness.

Android.common.mk does not need an update, as Android is always
little-endian (https://developer.android.com/ndk/guides/abis.html).

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
v5:
  - Add Reviewed-by,

v4:
  - Replace explicit #ifdef checks by a define set by meson,

v3:
  - No changes,

v2:
  - Add arm, aarch64, microblaze, s390, and sh.
main
Geert Uytterhoeven 2022-03-03 17:39:12 +01:00 committed by Dmitry Baryshkov
parent de88f74df9
commit 5dba8d73df
2 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
intel/uthash.h
View File

@ -648,11 +648,11 @@ do {
#define MUR_PLUS2_ALIGNED(p) (((unsigned long)p & 3UL) == 2UL)
#define MUR_PLUS3_ALIGNED(p) (((unsigned long)p & 3UL) == 3UL)
#define WP(p) ((uint32_t*)((unsigned long)(p) & ~3UL))
#if (defined(__BIG_ENDIAN__) || defined(SPARC) || defined(__ppc__) || defined(__ppc64__))
#ifdef HAVE_BIG_ENDIAN
#define MUR_THREE_ONE(p) ((((*WP(p))&0x00ffffff) << 8) | (((*(WP(p)+1))&0xff000000) >> 24))
#define MUR_TWO_TWO(p) ((((*WP(p))&0x0000ffff) <<16) | (((*(WP(p)+1))&0xffff0000) >> 16))
#define MUR_ONE_THREE(p) ((((*WP(p))&0x000000ff) <<24) | (((*(WP(p)+1))&0xffffff00) >> 8))
#else /* assume little endian non-intel */
#else /* little endian non-intel */
#define MUR_THREE_ONE(p) ((((*WP(p))&0xffffff00) >> 8) | (((*(WP(p)+1))&0x000000ff) << 24))
#define MUR_TWO_TWO(p) ((((*WP(p))&0xffff0000) >>16) | (((*(WP(p)+1))&0x0000ffff) << 16))
#define MUR_ONE_THREE(p) ((((*WP(p))&0xff000000) >>24) | (((*(WP(p)+1))&0x00ffffff) << 8))

5
meson.build
View File

@ -226,6 +226,11 @@ if with_freedreno_kgsl and not with_freedreno
error('cannot enable freedreno-kgsl without freedreno support')
endif
config.set10('_GNU_SOURCE', true)
if target_machine.endian() == 'big'
config.set('HAVE_BIG_ENDIAN', 1)
endif
config_file = configure_file(
configuration : config,
output : 'config.h',