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gh-112535: Add comment for ppc32/64 registers (gh-112746)

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Donghee Na 2023-12-05 10:44:19 +00:00 committed by GitHub
parent 2f20cafdbf
commit 5aa317e4ca
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1 changed files with 2 additions and 0 deletions
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Include/object.h
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@ -265,6 +265,7 @@ _Py_ThreadId(void)
#if defined(__clang__) && _Py__has_builtin(__builtin_thread_pointer)
tid = (uintptr_t)__builtin_thread_pointer();
#else
// r13 is reserved for use as system thread ID by the Power 64-bit ABI.
register uintptr_t tp __asm__ ("r13");
__asm__("" : "=r" (tp));
tid = tp;
@ -273,6 +274,7 @@ _Py_ThreadId(void)
#if defined(__clang__) && _Py__has_builtin(__builtin_thread_pointer)
tid = (uintptr_t)__builtin_thread_pointer();
#else
// r2 is reserved for use as system thread ID by the Power 32-bit ABI.
register uintptr_t tp __asm__ ("r2");
__asm__ ("" : "=r" (tp));
tid = tp;