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Diffstat (limited to 'libunwind/src/UnwindRegistersSave.S')
| -rw-r--r-- | libunwind/src/UnwindRegistersSave.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libunwind/src/UnwindRegistersSave.S b/libunwind/src/UnwindRegistersSave.S index 6c26b79877f6..79f5696a9888 100644 --- a/libunwind/src/UnwindRegistersSave.S +++ b/libunwind/src/UnwindRegistersSave.S @@ -351,9 +351,20 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) addi 4, 3, PPC64_OFFS_FP // store VS register +#ifdef __LITTLE_ENDIAN__ +// For little-endian targets, we need a swap since stxvd2x will store the +// register in the incorrect doubleword order. +// FIXME: when supporting targets older than Power9 on LE is no longer required +// this can be changed to simply `stxv n, 16 * n(4)`. #define PPC64_STVS(n) \ + xxswapd n, n ;\ stxvd2x n, 0, 4 ;\ addi 4, 4, 16 +#else +#define PPC64_STVS(n) \ + stxvd2x n, 0, 4 ;\ + addi 4, 4, 16 +#endif PPC64_STVS(0) PPC64_STVS(1) |