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| author | Richard Henderson <rth@twiddle.net> | 2013-02-28 21:37:02 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2013-03-06 07:47:21 -0800 |
| commit | 79fd8731113e8402732190ff921aebaaef9218b0 (patch) | |
| tree | 2e9b2d8f7c4441b6e7a9450ea3ab73c0087b615e /ports/sysdeps/arm | |
| parent | 3377126b0a055e6addaa6bd69f51dd557d774b99 (diff) | |
| download | glibc-79fd8731113e8402732190ff921aebaaef9218b0.tar.gz glibc-79fd8731113e8402732190ff921aebaaef9218b0.tar.xz glibc-79fd8731113e8402732190ff921aebaaef9218b0.zip | |
arm: Implement hard-tp for GET_TLS
Diffstat (limited to 'ports/sysdeps/arm')
| -rw-r--r-- | ports/sysdeps/arm/sysdep.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/ports/sysdeps/arm/sysdep.h b/ports/sysdeps/arm/sysdep.h index 156bc01734..4a7a13f6fb 100644 --- a/ports/sysdeps/arm/sysdep.h +++ b/ports/sysdeps/arm/sysdep.h @@ -50,6 +50,9 @@ #if __ARM_ARCH > 4 # define ARCH_HAS_BLX #endif +#if __ARM_ARCH > 6 || defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6ZK__) +# define ARCH_HAS_HARD_TP +#endif #if __ARM_ARCH > 6 || defined (__ARM_ARCH_6T2__) # define ARCH_HAS_T2 #endif @@ -187,10 +190,14 @@ /* Helper to get the TLS base pointer. The interface is that TMP is a register that may be used to hold the LR, if necessary. TMP may be LR itself to indicate that LR need not be saved. The base pointer - is returned in R0. Only R0 and TMP are modified. + is returned in R0. Only R0 and TMP are modified. */ - At this generic level we have no tricks to pull. Call the ABI routine. */ -# define GET_TLS(TMP) \ +# 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); \ @@ -201,6 +208,7 @@ bl __aeabi_read_tp; \ pop { r1, r2, r3, lr }; \ cfi_restore_state +# endif /* ARCH_HAS_HARD_TP */ #endif /* __ASSEMBLER__ */ |