These function attributes are supported by the MCORE back end:
naked
asm
statements can safely be included in naked functions (see Basic Asm). While using extended asm
or a mixture of basic asm
and C code may appear to work, they cannot be depended upon to work reliably and are not supported.
© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/MCORE-Function-Attributes.html