disable .set mips2 for mips release r6

MIPS r6 changed the encoding for `ll' instruction,
if we `.set mips2', it will generate the old encoding for `ll'.

So here we disable it for r6.
This commit is contained in:
YunQiang Su
2017-12-31 14:14:11 +08:00
committed by GitHub
parent 279372a784
commit 4252ed31de

View File

@@ -38,7 +38,9 @@ inline void atomic_increment( int * pw )
(
"0:\n\t"
".set push\n\t"
#if !defined(__mips_isa_rev) || (__mips_isa_rev < 6)
".set mips2\n\t"
#endif
"ll %0, %1\n\t"
"addiu %0, 1\n\t"
"sc %0, %1\n\t"
@@ -59,7 +61,9 @@ inline int atomic_decrement( int * pw )
(
"0:\n\t"
".set push\n\t"
#if !defined(__mips_isa_rev) || (__mips_isa_rev < 6)
".set mips2\n\t"
#endif
"ll %1, %2\n\t"
"addiu %0, %1, -1\n\t"
"sc %0, %2\n\t"
@@ -85,7 +89,9 @@ inline int atomic_conditional_increment( int * pw )
(
"0:\n\t"
".set push\n\t"
#if !defined(__mips_isa_rev) || (__mips_isa_rev < 6)
".set mips2\n\t"
#endif
"ll %0, %2\n\t"
"beqz %0, 1f\n\t"
"addiu %1, %0, 1\n\t"