diff options
| author | merge <null@invalid> | 2009-01-22 13:55:32 +0000 |
|---|---|---|
| committer | Andy Green <agreen@octopus.localdomain> | 2009-01-22 13:55:32 +0000 |
| commit | aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch) | |
| tree | fbb786d0ac6f8a774fd834e9ce951197e60fbffa /arch/sh/lib/mcount.S | |
| parent | f2d78193eae5dccd3d588d2c8ea0866efc368332 (diff) | |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040
stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch
mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch
Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'arch/sh/lib/mcount.S')
| -rw-r--r-- | arch/sh/lib/mcount.S | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/arch/sh/lib/mcount.S b/arch/sh/lib/mcount.S new file mode 100644 index 00000000000..110fbfe1831 --- /dev/null +++ b/arch/sh/lib/mcount.S @@ -0,0 +1,90 @@ +/* + * arch/sh/lib/mcount.S + * + * Copyright (C) 2008 Paul Mundt + * Copyright (C) 2008 Matt Fleming + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <asm/ftrace.h> + +#define MCOUNT_ENTER() \ + mov.l r4, @-r15; \ + mov.l r5, @-r15; \ + mov.l r6, @-r15; \ + mov.l r7, @-r15; \ + sts.l pr, @-r15; \ + \ + mov.l @(20,r15),r4; \ + sts pr, r5 + +#define MCOUNT_LEAVE() \ + lds.l @r15+, pr; \ + mov.l @r15+, r7; \ + mov.l @r15+, r6; \ + mov.l @r15+, r5; \ + rts; \ + mov.l @r15+, r4 + + .align 2 + .globl _mcount + .type _mcount,@function + .globl mcount + .type mcount,@function +_mcount: +mcount: + MCOUNT_ENTER() + +#ifdef CONFIG_DYNAMIC_FTRACE + .globl mcount_call +mcount_call: + mov.l .Lftrace_stub, r6 +#else + mov.l .Lftrace_trace_function, r6 + mov.l ftrace_stub, r7 + cmp/eq r6, r7 + bt skip_trace + mov.l @r6, r6 +#endif + + jsr @r6 + nop + +skip_trace: + MCOUNT_LEAVE() + + .align 2 +.Lftrace_trace_function: + .long ftrace_trace_function + +#ifdef CONFIG_DYNAMIC_FTRACE + .globl ftrace_caller +ftrace_caller: + MCOUNT_ENTER() + + .globl ftrace_call +ftrace_call: + mov.l .Lftrace_stub, r6 + jsr @r6 + nop + + MCOUNT_LEAVE() +#endif /* CONFIG_DYNAMIC_FTRACE */ + +/* + * NOTE: From here on the locations of the .Lftrace_stub label and + * ftrace_stub itself are fixed. Adding additional data here will skew + * the displacement for the memory table and break the block replacement. + * Place new labels either after the ftrace_stub body, or before + * ftrace_caller. You have been warned. + */ + .align 2 +.Lftrace_stub: + .long ftrace_stub + + .globl ftrace_stub +ftrace_stub: + rts + nop |