RISC-V: Fix an alignment warning in libthr
Compiling with clang gives a loss-of-alignment error due the cast to uint8_t *. Since the TLS is always tcb aligned and TP_OFFSET is defined as sizeof(struct tcb) we can guarantee there is no misalignment. Silence the error by moving the offset into the inline assembly. Reviewed by: br MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D21926
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=353334
@ -62,7 +62,7 @@ static __inline void
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_tcb_set(struct tcb *tcb)
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_tcb_set(struct tcb *tcb)
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{
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{
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__asm __volatile("mv tp, %0" :: "r"((uint8_t *)tcb + TP_OFFSET));
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__asm __volatile("addi tp, %0, %1" :: "r"(tcb), "I"(TP_OFFSET));
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}
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}
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/*
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/*
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@ -71,11 +71,11 @@ _tcb_set(struct tcb *tcb)
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static __inline struct tcb *
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static __inline struct tcb *
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_tcb_get(void)
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_tcb_get(void)
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{
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{
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register uint8_t *_tp;
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struct tcb *_tcb;
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__asm __volatile("mv %0, tp" : "=r"(_tp));
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__asm __volatile("addi %0, tp, %1" : "=r"(_tcb) : "I"(-TP_OFFSET));
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return ((struct tcb *)(_tp - TP_OFFSET));
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return (_tcb);
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}
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}
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static __inline struct pthread *
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static __inline struct pthread *
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