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| author | Matheus Castanho <msc@linux.ibm.com> | 2020-12-03 14:15:28 -0300 |
|---|---|---|
| committer | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2020-12-30 18:26:33 -0300 |
| commit | 41f013cef24884604c303435dd1915be2ea5c0e0 (patch) | |
| tree | ecbca383796ba7121e14a33f91ec6a5060d5a34d /shadow | |
| parent | 68ab82f56690ada86ac1e0c46bad06ba189a10ef (diff) | |
| download | glibc-41f013cef24884604c303435dd1915be2ea5c0e0.tar.gz glibc-41f013cef24884604c303435dd1915be2ea5c0e0.tar.xz glibc-41f013cef24884604c303435dd1915be2ea5c0e0.zip | |
powerpc: Use scv instruction on clone when available
clone already uses r31 to temporarily save input arguments before doing the syscall, so we use a different register to read from the TCB. We can also avoid allocating another stack frame, which is not needed since we can simply extend the usage of the red zone. Tested-by: Lucas A. M. Magalhães <lamm@linux.ibm.com> Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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