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3a5b9ae7cf
the adjustment made is entirely a function of TLS_ABOVE_TP and TP_OFFSET. aside from avoiding repetition of the TP_OFFSET value and arithmetic, this change makes pthread_arch.h independent of the definition of struct __pthread from pthread_impl.h. this in turn will allow inclusion of pthread_arch.h to be moved to the top of pthread_impl.h so that it can influence the definition of the structure. previously, arch files were very inconsistent about the type used for the thread pointer. this change unifies the new __get_tp interface to always use uintptr_t, which is the most correct when performing arithmetic that may involve addresses outside the actual pointed-to object (due to TP_OFFSET).
33 lines
654 B
C
33 lines
654 B
C
#if ((__ARM_ARCH_6K__ || __ARM_ARCH_6KZ__ || __ARM_ARCH_6ZK__) && !__thumb__) \
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|| __ARM_ARCH_7A__ || __ARM_ARCH_7R__ || __ARM_ARCH >= 7
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static inline uintptr_t __get_tp()
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{
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uintptr_t tp;
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__asm__ ( "mrc p15,0,%0,c13,c0,3" : "=r"(tp) );
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return tp;
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}
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#else
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#if __ARM_ARCH_4__ || __ARM_ARCH_4T__ || __ARM_ARCH == 4
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#define BLX "mov lr,pc\n\tbx"
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#else
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#define BLX "blx"
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#endif
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static inline uintptr_t __get_tp()
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{
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extern hidden uintptr_t __a_gettp_ptr;
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register uintptr_t tp __asm__("r0");
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__asm__ ( BLX " %1" : "=r"(tp) : "r"(__a_gettp_ptr) : "cc", "lr" );
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return tp;
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}
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#endif
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#define TLS_ABOVE_TP
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#define GAP_ABOVE_TP 8
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#define MC_PC arm_pc
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