668bb3cb22
This is a workaround for a compiler bug on (at least) GCC 12.1.0 in Zephyr SDK 0.15.1. The optimizer generates this function with a last instruction that is an unconditional branch (a tail call into the chunk_set() handling). But that means that the NEXT instruction gets decoded as part of the branch delay slot, but that instruction isn't part of this function! Some instructions aren't legal in branch delay slots. One of those is ENTER_S, which is a very common entry instruction for whatever function the linker places after us. It seems like the compiler doesn't understand this problem. Stuff a NOP in to guarantee the code is legal. Comment above is duplicated in the code. The workaround is straightforward once the issue is understood, but the path to get here was hilariously weird. Fixes #54720 Signed-off-by: Andy Ross <andyross@google.com> |
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| .. | ||
| cpp | ||
| libc | ||
| open-amp | ||
| os | ||
| posix | ||
| smf | ||
| util | ||
| CMakeLists.txt | ||
| Kconfig | ||