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| author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
| commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
| tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/x86/lib/thunk_64.S | |
| parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
| download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip | |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/x86/lib/thunk_64.S')
| -rw-r--r-- | arch/x86/lib/thunk_64.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/x86/lib/thunk_64.S b/arch/x86/lib/thunk_64.S new file mode 100644 index 00000000..a63efd6b --- /dev/null +++ b/arch/x86/lib/thunk_64.S @@ -0,0 +1,45 @@ +/* + * Save registers before calling assembly functions. This avoids + * disturbance of register allocation in some inline assembly constructs. + * Copyright 2001,2002 by Andi Kleen, SuSE Labs. + * Added trace_hardirqs callers - Copyright 2007 Steven Rostedt, Red Hat, Inc. + * Subject to the GNU public license, v.2. No warranty of any kind. + */ +#include <linux/linkage.h> +#include <asm/dwarf2.h> +#include <asm/calling.h> + + /* rdi: arg1 ... normal C conventions. rax is saved/restored. */ + .macro THUNK name, func, put_ret_addr_in_rdi=0 + .globl \name +\name: + CFI_STARTPROC + + /* this one pushes 9 elems, the next one would be %rIP */ + SAVE_ARGS + + .if \put_ret_addr_in_rdi + movq_cfi_restore 9*8, rdi + .endif + + call \func + jmp restore + CFI_ENDPROC + .endm + +#ifdef CONFIG_TRACE_IRQFLAGS + THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1 + THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1 +#endif + +#ifdef CONFIG_DEBUG_LOCK_ALLOC + THUNK lockdep_sys_exit_thunk,lockdep_sys_exit +#endif + + /* SAVE_ARGS below is used only for the .cfi directives it contains. */ + CFI_STARTPROC + SAVE_ARGS +restore: + RESTORE_ARGS + ret + CFI_ENDPROC |