x86: introduce save_rest and restructure the PTREGSCALL macro in entry_64.S

Browse source

Impact: cleanup

The save_rest function completes a partial stack frame for use
by the PTREGSCALL macro. This also avoids the indirect call in
PTREGSCALLs.

This adds the macro movq_cfi_restore to hide the CFI_RESTORE
annotation when restoring a register from the stack frame.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Alexander van Heukelum 2008-11-21 16:41:55 +01:00 • committed by Ingo Molnar

parent 14ae22ba2b

commit c002a1e6b6

1 changed files with 53 additions and 38 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

91

arch/x86/kernel/entry_64.S

View file