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| author | Franck Bui-Huu <vagabon.xyz@gmail.com> | 2006-08-03 09:29:20 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-09-27 13:37:28 +0100 |
| commit | 0cceb4aa9acf6192a5f02134e764b1feeea8b9de (patch) | |
| tree | 9c5dd31e00b7e7b3fcc694bd0d4e6213614a66c7 /arch/mips/kernel/process.c | |
| parent | 1666a6fc73f724cdc6bd7d699f9ada4b04953efe (diff) | |
| download | blackbird-op-linux-0cceb4aa9acf6192a5f02134e764b1feeea8b9de.tar.gz blackbird-op-linux-0cceb4aa9acf6192a5f02134e764b1feeea8b9de.zip | |
[MIPS] Make get_frame_info() more robust
Now get_frame_info() wants to detect move sp instruction first. It
assumes that the save ra in the stack instruction can't happen
before allocating frame size space into the stack.
Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/process.c')
| -rw-r--r-- | arch/mips/kernel/process.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index da332d707ce5..309bfa4a1520 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -321,17 +321,15 @@ static int get_frame_info(struct mips_frame_info *info) if (is_jal_jalr_jr_ins(ip)) break; - if (is_sp_move_ins(ip)) { - if (info->frame_size) - continue; - info->frame_size = - ip->i_format.simmediate; + if (!info->frame_size) { + if (is_sp_move_ins(ip)) + info->frame_size = - ip->i_format.simmediate; + continue; } - - if (is_ra_save_ins(ip)) { - if (info->pc_offset != -1) - continue; + if (info->pc_offset == -1 && is_ra_save_ins(ip)) { info->pc_offset = ip->i_format.simmediate / sizeof(long); + break; } } if (info->frame_size && info->pc_offset >= 0) /* nested */ |
