diff options
Diffstat (limited to 'libgcc/config/aarch64/lse.S')
| -rw-r--r-- | libgcc/config/aarch64/lse.S | 57 |
1 files changed, 49 insertions, 8 deletions
diff --git a/libgcc/config/aarch64/lse.S b/libgcc/config/aarch64/lse.S index ca6495f..f3ccf5c 100644 --- a/libgcc/config/aarch64/lse.S +++ b/libgcc/config/aarch64/lse.S @@ -48,8 +48,14 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see * separately to minimize code size. */ +#include "auto-target.h" + /* Tell the assembler to accept LSE instructions. */ +#ifdef HAVE_AS_LSE .arch armv8-a+lse +#else + .arch armv8-a +#endif /* Declare the symbol gating the LSE implementations. */ .hidden __aarch64_have_lse_atomics @@ -58,12 +64,19 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #if SIZE == 1 # define S b # define UXT uxtb +# define B 0x00000000 #elif SIZE == 2 # define S h # define UXT uxth +# define B 0x40000000 #elif SIZE == 4 || SIZE == 8 || SIZE == 16 # define S # define UXT mov +# if SIZE == 4 +# define B 0x80000000 +# elif SIZE == 8 +# define B 0xc0000000 +# endif #else # error #endif @@ -72,18 +85,26 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see # define SUFF _relax # define A # define L +# define M 0x000000 +# define N 0x000000 #elif MODEL == 2 # define SUFF _acq # define A a # define L +# define M 0x400000 +# define N 0x800000 #elif MODEL == 3 # define SUFF _rel # define A # define L l +# define M 0x008000 +# define N 0x400000 #elif MODEL == 4 # define SUFF _acq_rel # define A a # define L l +# define M 0x408000 +# define N 0xc00000 #else # error #endif @@ -144,9 +165,13 @@ STARTFN NAME(cas) JUMP_IF_NOT_LSE 8f #if SIZE < 16 -#define CAS glue4(cas, A, L, S) +#ifdef HAVE_AS_LSE +# define CAS glue4(cas, A, L, S) s(0), s(1), [x2] +#else +# define CAS .inst 0x08a07c41 + B + M +#endif - CAS s(0), s(1), [x2] + CAS /* s(0), s(1), [x2] */ ret 8: UXT s(tmp0), s(0) @@ -160,9 +185,13 @@ STARTFN NAME(cas) #else #define LDXP glue3(ld, A, xp) #define STXP glue3(st, L, xp) -#define CASP glue3(casp, A, L) +#ifdef HAVE_AS_LSE +# define CASP glue3(casp, A, L) x0, x1, x2, x3, [x4] +#else +# define CASP .inst 0x48207c82 + M +#endif - CASP x0, x1, x2, x3, [x4] + CASP /* x0, x1, x2, x3, [x4] */ ret 8: mov x(tmp0), x0 @@ -181,12 +210,16 @@ ENDFN NAME(cas) #endif #ifdef L_swp -#define SWP glue4(swp, A, L, S) +#ifdef HAVE_AS_LSE +# define SWP glue4(swp, A, L, S) s(0), s(0), [x1] +#else +# define SWP .inst 0x38208020 + B + N +#endif STARTFN NAME(swp) JUMP_IF_NOT_LSE 8f - SWP s(0), s(0), [x1] + SWP /* s(0), s(0), [x1] */ ret 8: mov s(tmp0), s(0) @@ -204,24 +237,32 @@ ENDFN NAME(swp) #ifdef L_ldadd #define LDNM ldadd #define OP add +#define OPN 0x0000 #elif defined(L_ldclr) #define LDNM ldclr #define OP bic +#define OPN 0x1000 #elif defined(L_ldeor) #define LDNM ldeor #define OP eor +#define OPN 0x2000 #elif defined(L_ldset) #define LDNM ldset #define OP orr +#define OPN 0x3000 #else #error #endif -#define LDOP glue4(LDNM, A, L, S) +#ifdef HAVE_AS_LSE +# define LDOP glue4(LDNM, A, L, S) s(0), s(0), [x1] +#else +# define LDOP .inst 0x38200020 + OPN + B + N +#endif STARTFN NAME(LDNM) JUMP_IF_NOT_LSE 8f - LDOP s(0), s(0), [x1] + LDOP /* s(0), s(0), [x1] */ ret 8: mov s(tmp0), s(0) |