diff options
Diffstat (limited to 'include/asm-sparc/futex_64.h')
| -rw-r--r-- | include/asm-sparc/futex_64.h | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/include/asm-sparc/futex_64.h b/include/asm-sparc/futex_64.h deleted file mode 100644 index d8378935ae90..000000000000 --- a/include/asm-sparc/futex_64.h +++ /dev/null | |||
| @@ -1,110 +0,0 @@ | |||
| 1 | #ifndef _SPARC64_FUTEX_H | ||
| 2 | #define _SPARC64_FUTEX_H | ||
| 3 | |||
| 4 | #include <linux/futex.h> | ||
| 5 | #include <linux/uaccess.h> | ||
| 6 | #include <asm/errno.h> | ||
| 7 | #include <asm/system.h> | ||
| 8 | |||
| 9 | #define __futex_cas_op(insn, ret, oldval, uaddr, oparg) \ | ||
| 10 | __asm__ __volatile__( \ | ||
| 11 | "\n1: lduwa [%3] %%asi, %2\n" \ | ||
| 12 | " " insn "\n" \ | ||
| 13 | "2: casa [%3] %%asi, %2, %1\n" \ | ||
| 14 | " cmp %2, %1\n" \ | ||
| 15 | " bne,pn %%icc, 1b\n" \ | ||
| 16 | " mov 0, %0\n" \ | ||
| 17 | "3:\n" \ | ||
| 18 | " .section .fixup,#alloc,#execinstr\n" \ | ||
| 19 | " .align 4\n" \ | ||
| 20 | "4: sethi %%hi(3b), %0\n" \ | ||
| 21 | " jmpl %0 + %%lo(3b), %%g0\n" \ | ||
| 22 | " mov %5, %0\n" \ | ||
| 23 | " .previous\n" \ | ||
| 24 | " .section __ex_table,\"a\"\n" \ | ||
| 25 | " .align 4\n" \ | ||
| 26 | " .word 1b, 4b\n" \ | ||
| 27 | " .word 2b, 4b\n" \ | ||
| 28 | " .previous\n" \ | ||
| 29 | : "=&r" (ret), "=&r" (oldval), "=&r" (tem) \ | ||
| 30 | : "r" (uaddr), "r" (oparg), "i" (-EFAULT) \ | ||
| 31 | : "memory") | ||
| 32 | |||
| 33 | static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr) | ||
| 34 | { | ||
| 35 | int op = (encoded_op >> 28) & 7; | ||
| 36 | int cmp = (encoded_op >> 24) & 15; | ||
| 37 | int oparg = (encoded_op << 8) >> 20; | ||
| 38 | int cmparg = (encoded_op << 20) >> 20; | ||
| 39 | int oldval = 0, ret, tem; | ||
| 40 | |||
| 41 | if (unlikely(!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))) | ||
| 42 | return -EFAULT; | ||
| 43 | if (unlikely((((unsigned long) uaddr) & 0x3UL))) | ||
| 44 | return -EINVAL; | ||
| 45 | |||
| 46 | if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) | ||
| 47 | oparg = 1 << oparg; | ||
| 48 | |||
| 49 | pagefault_disable(); | ||
| 50 | |||
| 51 | switch (op) { | ||
| 52 | case FUTEX_OP_SET: | ||
| 53 | __futex_cas_op("mov\t%4, %1", ret, oldval, uaddr, oparg); | ||
| 54 | break; | ||
| 55 | case FUTEX_OP_ADD: | ||
| 56 | __futex_cas_op("add\t%2, %4, %1", ret, oldval, uaddr, oparg); | ||
| 57 | break; | ||
| 58 | case FUTEX_OP_OR: | ||
| 59 | __futex_cas_op("or\t%2, %4, %1", ret, oldval, uaddr, oparg); | ||
| 60 | break; | ||
| 61 | case FUTEX_OP_ANDN: | ||
| 62 | __futex_cas_op("and\t%2, %4, %1", ret, oldval, uaddr, oparg); | ||
| 63 | break; | ||
| 64 | case FUTEX_OP_XOR: | ||
| 65 | __futex_cas_op("xor\t%2, %4, %1", ret, oldval, uaddr, oparg); | ||
| 66 | break; | ||
| 67 | default: | ||
| 68 | ret = -ENOSYS; | ||
| 69 | } | ||
| 70 | |||
| 71 | pagefault_enable(); | ||
| 72 | |||
| 73 | if (!ret) { | ||
| 74 | switch (cmp) { | ||
| 75 | case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break; | ||
| 76 | case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break; | ||
| 77 | case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break; | ||
| 78 | case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break; | ||
| 79 | case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break; | ||
| 80 | case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break; | ||
| 81 | default: ret = -ENOSYS; | ||
| 82 | } | ||
| 83 | } | ||
| 84 | return ret; | ||
| 85 | } | ||
| 86 | |||
| 87 | static inline int | ||
| 88 | futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval) | ||
| 89 | { | ||
| 90 | __asm__ __volatile__( | ||
| 91 | "\n1: casa [%3] %%asi, %2, %0\n" | ||
| 92 | "2:\n" | ||
| 93 | " .section .fixup,#alloc,#execinstr\n" | ||
| 94 | " .align 4\n" | ||
| 95 | "3: sethi %%hi(2b), %0\n" | ||
| 96 | " jmpl %0 + %%lo(2b), %%g0\n" | ||
| 97 | " mov %4, %0\n" | ||
| 98 | " .previous\n" | ||
| 99 | " .section __ex_table,\"a\"\n" | ||
| 100 | " .align 4\n" | ||
| 101 | " .word 1b, 3b\n" | ||
| 102 | " .previous\n" | ||
| 103 | : "=r" (newval) | ||
| 104 | : "0" (newval), "r" (oldval), "r" (uaddr), "i" (-EFAULT) | ||
| 105 | : "memory"); | ||
| 106 | |||
| 107 | return newval; | ||
| 108 | } | ||
| 109 | |||
| 110 | #endif /* !(_SPARC64_FUTEX_H) */ | ||