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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-08-15 16:51:48 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-08-15 16:51:48 +0100 |
| commit | 9b2616c2e8cc98ca98bbb40cad83a8d3d859e840 (patch) | |
| tree | 5a971fa57298d58529d3ae82b68cbfc7139bde7b /arch/arm/kernel/entry-common.S | |
| parent | 590a94d93475fa6cca257f161ae268ed3a2395b5 (diff) | |
| parent | ac25150f2c55ea26447af0fa1d4e2bb07f97384d (diff) | |
Merge branch 'for-rmk-2.6.32' of git://git.pengutronix.de/git/ukl/linux-2.6 into devel-stable
Diffstat (limited to 'arch/arm/kernel/entry-common.S')
| -rw-r--r-- | arch/arm/kernel/entry-common.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index a0540c9f1f0..df19e8bf2e4 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -118,6 +118,25 @@ ftrace_call: #else +ENTRY(__gnu_mcount_nc) + stmdb sp!, {r0-r3, lr} + ldr r0, =ftrace_trace_function + ldr r2, [r0] + adr r0, ftrace_stub + cmp r0, r2 + bne gnu_trace + ldmia sp!, {r0-r3, ip, lr} + bx ip + +gnu_trace: + ldr r1, [sp, #20] @ lr of instrumented routine + mov r0, lr + sub r0, r0, #MCOUNT_INSN_SIZE + mov lr, pc + mov pc, r2 + ldmia sp!, {r0-r3, ip, lr} + bx ip + ENTRY(mcount) stmdb sp!, {r0-r3, lr} ldr r0, =ftrace_trace_function |