[FFmpeg-devel] [PATCH v3] avutil/mips: Avoid instruction exception caused by gssqc1/gslqc1.

[Shiyou Yin]

Ensure the address accesed by gssqc1/gslqc1 are 16-bits memory-aligned.
---
 libavcodec/mips/simple_idct_mmi.c | 2 +-
 libavutil/mips/mmiutils.h         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/mips/simple_idct_mmi.c b/libavcodec/mips/simple_idct_mmi.c
index 7f4bb74..73d797f 100644
--- a/libavcodec/mips/simple_idct_mmi.c
+++ b/libavcodec/mips/simple_idct_mmi.c
@@ -39,7 +39,7 @@
 #define COL_SHIFT 20
 #define DC_SHIFT 3
 
-DECLARE_ALIGNED(8, const int16_t, W_arr)[46] = {
+DECLARE_ALIGNED(16, const int16_t, W_arr)[46] = {
     W4,  W2,  W4,  W6,
     W1,  W3,  W5,  W7,
     W4,  W6, -W4, -W2,
diff --git a/libavutil/mips/mmiutils.h b/libavutil/mips/mmiutils.h
index 05f6b31..14b6d20 100644
--- a/libavutil/mips/mmiutils.h
+++ b/libavutil/mips/mmiutils.h
@@ -205,7 +205,7 @@
  * backup register
  */
 #define BACKUP_REG \
-  double temp_backup_reg[8];                                    \
+  DECLARE_ALIGNED(16, double, temp_backup_reg)[8];              \
   if (_MIPS_SIM == _ABI64)                                      \
     __asm__ volatile (                                          \
       "gssqc1       $f25,      $f24,       0x00(%[temp])  \n\t" \
-- 
2.1.0