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lib/utils/gchelper_generic: Implement AArch64 support. #6943

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lib/utils/gchelper_generic: Implement AArch64 support. #6943

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2 changes: 2 additions & 0 deletions lib/utils/gchelper.h
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,8 @@ typedef uintptr_t gc_helper_regs_t[6];
typedef uintptr_t gc_helper_regs_t[4];
#elif defined(__thumb2__) || defined(__thumb__) || defined(__arm__)
typedef uintptr_t gc_helper_regs_t[10];
#elif defined(__aarch64__)
typedef uintptr_t gc_helper_regs_t[11]; // x19-x29
#endif

#endif
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27 changes: 27 additions & 0 deletions lib/utils/gchelper_generic.c
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Expand Up @@ -123,6 +123,33 @@ STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
arr[9] = r13;
}

#elif defined(__aarch64__)

STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
const register long x19 asm ("x19");
const register long x20 asm ("x20");
const register long x21 asm ("x21");
const register long x22 asm ("x22");
const register long x23 asm ("x23");
const register long x24 asm ("x24");
const register long x25 asm ("x25");
const register long x26 asm ("x26");
const register long x27 asm ("x27");
const register long x28 asm ("x28");
const register long x29 asm ("x29");
arr[0] = x19;
arr[1] = x20;
arr[2] = x21;
arr[3] = x22;
arr[4] = x23;
arr[5] = x24;
arr[6] = x25;
arr[7] = x26;
arr[8] = x27;
arr[9] = x28;
arr[10] = x29;
}

#else

#error "Architecture not supported for gc_helper_get_regs. Set MICROPY_GCREGS_SETJMP to use the fallback implementation."
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