diff options
Diffstat (limited to 'arch/mips/include/asm/asm.h')
| -rw-r--r-- | arch/mips/include/asm/asm.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/mips/include/asm/asm.h b/arch/mips/include/asm/asm.h index 2f8ce94ebaaf..6ffdd4b5e1d0 100644 --- a/arch/mips/include/asm/asm.h +++ b/arch/mips/include/asm/asm.h @@ -19,6 +19,7 @@ #include <asm/sgidefs.h> #include <asm/asm-eva.h> +#include <asm/isa-rev.h> #ifndef __VDSO__ /* @@ -211,6 +212,8 @@ symbol = value #define LONG_SUB sub #define LONG_SUBU subu #define LONG_L lw +#define LONG_LL ll +#define LONG_SC sc #define LONG_S sw #define LONG_SP swp #define LONG_SLL sll @@ -219,6 +222,8 @@ symbol = value #define LONG_SRLV srlv #define LONG_SRA sra #define LONG_SRAV srav +#define LONG_INS ins +#define LONG_EXT ext #ifdef __ASSEMBLY__ #define LONG .word @@ -236,6 +241,8 @@ symbol = value #define LONG_SUB dsub #define LONG_SUBU dsubu #define LONG_L ld +#define LONG_LL lld +#define LONG_SC scd #define LONG_S sd #define LONG_SP sdp #define LONG_SLL dsll @@ -244,6 +251,8 @@ symbol = value #define LONG_SRLV dsrlv #define LONG_SRA dsra #define LONG_SRAV dsrav +#define LONG_INS dins +#define LONG_EXT dext #ifdef __ASSEMBLY__ #define LONG .dword @@ -320,6 +329,19 @@ symbol = value #define SSNOP sll zero, zero, 1 +/* + * Using a branch-likely instruction to check the result of an sc instruction + * works around a bug present in R10000 CPUs prior to revision 3.0 that could + * cause ll-sc sequences to execute non-atomically. + */ +#ifdef CONFIG_WAR_R10000_LLSC +# define SC_BEQZ beqzl +#elif MIPS_ISA_REV >= 6 +# define SC_BEQZ beqzc +#else +# define SC_BEQZ beqz +#endif + #ifdef CONFIG_SGI_IP28 /* Inhibit speculative stores to volatile (e.g.DMA) or invalid addresses. */ #include <asm/cacheops.h> |