diff options
| author | roger blofeld <blofeldus@yahoo.com> | 2012-06-21 05:27:14 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-07-11 14:23:32 +1000 |
| commit | fd5a42980e1cf327b7240adf5e7b51ea41c23437 (patch) | |
| tree | e9469b78a83be2d8573999897fdd7509a12f353f /arch/powerpc/kernel/ftrace.c | |
| parent | ac84aa2b3b9b791eac45174d1966d5fdf3bbba1c (diff) | |
powerpc/ftrace: Fix assembly trampoline register usage
Just like the module loader, ftrace needs to be updated to use r12
instead of r11 with newer gcc's.
Signed-off-by: Roger Blofeld <blofeldus@yahoo.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@vger.kernel.org
Diffstat (limited to 'arch/powerpc/kernel/ftrace.c')
| -rw-r--r-- | arch/powerpc/kernel/ftrace.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c index 6f33296a0570..91b46b7f6f0d 100644 --- a/arch/powerpc/kernel/ftrace.c +++ b/arch/powerpc/kernel/ftrace.c @@ -240,9 +240,9 @@ __ftrace_make_nop(struct module *mod, /* * On PPC32 the trampoline looks like: - * 0x3d, 0x60, 0x00, 0x00 lis r11,sym@ha - * 0x39, 0x6b, 0x00, 0x00 addi r11,r11,sym@l - * 0x7d, 0x69, 0x03, 0xa6 mtctr r11 + * 0x3d, 0x80, 0x00, 0x00 lis r12,sym@ha + * 0x39, 0x8c, 0x00, 0x00 addi r12,r12,sym@l + * 0x7d, 0x89, 0x03, 0xa6 mtctr r12 * 0x4e, 0x80, 0x04, 0x20 bctr */ @@ -257,9 +257,9 @@ __ftrace_make_nop(struct module *mod, pr_devel(" %08x %08x ", jmp[0], jmp[1]); /* verify that this is what we expect it to be */ - if (((jmp[0] & 0xffff0000) != 0x3d600000) || - ((jmp[1] & 0xffff0000) != 0x396b0000) || - (jmp[2] != 0x7d6903a6) || + if (((jmp[0] & 0xffff0000) != 0x3d800000) || + ((jmp[1] & 0xffff0000) != 0x398c0000) || + (jmp[2] != 0x7d8903a6) || (jmp[3] != 0x4e800420)) { printk(KERN_ERR "Not a trampoline\n"); return -EINVAL; |