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| author | Mike Frysinger <vapier@gentoo.org> | 2010-01-22 07:59:32 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-03-09 00:30:50 -0500 |
| commit | b73faf74493fd1bc75a8938aa5d296facf50a650 (patch) | |
| tree | 69edd54da1d535661ac5a14ee3aa27e5e4ca2337 /arch/blackfin/kernel/ftrace-entry.S | |
| parent | aebfef03249819886a7f9c981940cbd48d82ea47 (diff) | |
| download | op-kernel-dev-b73faf74493fd1bc75a8938aa5d296facf50a650.zip op-kernel-dev-b73faf74493fd1bc75a8938aa5d296facf50a650.tar.gz | |
Blackfin: support new ftrace frame pointer semantics
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel/ftrace-entry.S')
| -rw-r--r-- | arch/blackfin/kernel/ftrace-entry.S | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/blackfin/kernel/ftrace-entry.S b/arch/blackfin/kernel/ftrace-entry.S index db3a51b..d66446b 100644 --- a/arch/blackfin/kernel/ftrace-entry.S +++ b/arch/blackfin/kernel/ftrace-entry.S @@ -115,9 +115,12 @@ ENTRY(_ftrace_graph_caller) [--sp] = r1; [--sp] = rets; - /* prepare_ftrace_return(unsigned long *parent, unsigned long self_addr) */ - r0 = sp; - r1 = rets; + /* prepare_ftrace_return(parent, self_addr, frame_pointer) */ + r0 = sp; /* unsigned long *parent */ + r1 = rets; /* unsigned long self_addr */ +#ifdef CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST + r2 = fp; /* unsigned long frame_pointer */ +#endif r0 += 16; /* skip the 4 local regs on stack */ r1 += -MCOUNT_INSN_SIZE; call _prepare_ftrace_return; @@ -136,6 +139,9 @@ ENTRY(_return_to_handler) [--sp] = r1; /* get original return address */ +#ifdef CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST + r0 = fp; /* Blackfin is sane, so omit this */ +#endif call _ftrace_return_to_handler; rets = r0; |
