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6.33.12 IA-64 Function Attributes

These function attributes are supported on IA-64 targets:

+syscall_linkage +
+

This attribute is used to modify the IA-64 calling convention by marking all input registers as live at all function exits. This makes it possible to restart a system call after an interrupt without having to save/restore the input registers. This also prevents kernel data from leaking into application code.

+version_id +
+

This IA-64 HP-UX attribute, attached to a global variable or function, renames a symbol to contain a version string, thus allowing for function level versioning. HP-UX system header files may use function level versioning for some system calls. 

extern int foo () __attribute__((version_id ("20040821")));
+

Calls to foo are mapped to calls to foo{20040821}.

+
+

+ © Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
+ https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/IA-64-Function-Attributes.html +

+
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