diff options
Diffstat (limited to 'libc/sysdeps/linux/arm/sysdep.h')
| -rw-r--r-- | libc/sysdeps/linux/arm/sysdep.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arm/sysdep.h b/libc/sysdeps/linux/arm/sysdep.h index 64f40407e..2d0a9cc41 100644 --- a/libc/sysdeps/linux/arm/sysdep.h +++ b/libc/sysdeps/linux/arm/sysdep.h @@ -213,6 +213,42 @@ __local_syscall_error: \ sees the right arguments. */ +#if __ARM_ARCH > 6 || defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6ZK__) +# define ARCH_HAS_HARD_TP +#endif + +# ifdef __thumb2__ +# define NEGOFF_ADJ_BASE(R, OFF) add R, R, $OFF +# define NEGOFF_ADJ_BASE2(D, S, OFF) add D, S, $OFF +# define NEGOFF_OFF1(R, OFF) [R] +# define NEGOFF_OFF2(R, OFFA, OFFB) [R, $((OFFA) - (OFFB))] +# else +# define NEGOFF_ADJ_BASE(R, OFF) +# define NEGOFF_ADJ_BASE2(D, S, OFF) mov D, S +# define NEGOFF_OFF1(R, OFF) [R, $OFF] +# define NEGOFF_OFF2(R, OFFA, OFFB) [R, $OFFA] +# endif + +# ifdef ARCH_HAS_HARD_TP +/* If the cpu has cp15 available, use it. */ +# define GET_TLS(TMP) mrc p15, 0, r0, c13, c0, 3 +# else +/* At this generic level we have no tricks to pull. Call the ABI routine. */ +# define GET_TLS(TMP) \ + push { r1, r2, r3, lr }; \ + cfi_remember_state; \ + cfi_adjust_cfa_offset (16); \ + cfi_rel_offset (r1, 0); \ + cfi_rel_offset (r2, 4); \ + cfi_rel_offset (r3, 8); \ + cfi_rel_offset (lr, 12); \ + bl __aeabi_read_tp; \ + pop { r1, r2, r3, lr }; \ + cfi_restore_state +# endif /* ARCH_HAS_HARD_TP */ + + + #undef DO_CALL #if defined(__ARM_EABI__) |