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[3.13] gh-125444: Fix illegal instruction for older Arm architectures (GH-125574) #125595

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Merged
merged 1 commit into from
Oct 16, 2024
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[3.13] gh-125444: Fix illegal instruction for older Arm architectures (GH-125574) #125595

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4 changes: 2 additions & 2 deletions Include/internal/mimalloc/mimalloc/prim.h
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Original file line number Diff line number Diff line change
Expand Up @@ -151,9 +151,9 @@ static inline mi_threadid_t _mi_prim_thread_id(void) mi_attr_noexcept {
// If you test on another platform and it works please send a PR :-)
// see also https://akkadia.org/drepper/tls.pdf for more info on the TLS register.
#elif defined(__GNUC__) && ( \
(defined(__GLIBC__) && (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__))) \
(defined(__GLIBC__) && (defined(__x86_64__) || defined(__i386__) || (defined(__arm__) && __ARM_ARCH >= 7) || defined(__aarch64__))) \
|| (defined(__APPLE__) && (defined(__x86_64__) || defined(__aarch64__))) \
|| (defined(__BIONIC__) && (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__))) \
|| (defined(__BIONIC__) && (defined(__x86_64__) || defined(__i386__) || (defined(__arm__) && __ARM_ARCH >= 7) || defined(__aarch64__))) \
|| (defined(__FreeBSD__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__))) \
|| (defined(__OpenBSD__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__))) \
)
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2 changes: 1 addition & 1 deletion Include/object.h
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Expand Up @@ -259,7 +259,7 @@ _Py_ThreadId(void)
__asm__("movq %%gs:0, %0" : "=r" (tid)); // x86_64 macOSX uses GS
#elif defined(__x86_64__)
__asm__("movq %%fs:0, %0" : "=r" (tid)); // x86_64 Linux, BSD uses FS
#elif defined(__arm__)
#elif defined(__arm__) && __ARM_ARCH >= 7
__asm__ ("mrc p15, 0, %0, c13, c0, 3\nbic %0, %0, #3" : "=r" (tid));
#elif defined(__aarch64__) && defined(__APPLE__)
__asm__ ("mrs %0, tpidrro_el0" : "=r" (tid));
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2024-10-16-12-12-39.gh-issue-125444.9tG2X6.rst
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@@ -0,0 +1 @@
Fix illegal instruction for older Arm architectures. Patch by Diego Russo, testing by Ross Burton.
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