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| author | Peng Fan <van.freenix@gmail.com> | 2014-09-01 21:48:07 +0800 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-09-16 12:23:56 -0400 |
| commit | f9f040b21587ec884ff761cfa2f2fb66cc5157d1 (patch) | |
| tree | d1ee243faebc72936b07e3227b27c034ad1db0cc /common/cmd_mem.c | |
| parent | f6c8f38ec601d32d88ba279d53991e15015c9466 (diff) | |
| download | blackbird-obmc-uboot-f9f040b21587ec884ff761cfa2f2fb66cc5157d1.tar.gz blackbird-obmc-uboot-f9f040b21587ec884ff761cfa2f2fb66cc5157d1.zip | |
kgdb: Remove first_entry for kgdb
There are two ways to run into handle_exception, run command 'kgdb' and
encounter a breakpoint which triggers exception handling.
The origin source code only saves regs when first run command 'kgdb'.
Take the following for example, When run 'kgdb', regs is saved to entry_regs.
When run 'bootz', regs is not saved. However, if we set a breakpoint, then
continue. When breakpoint is reached, run `quit`, and Now return to the
instruction which follows kgdb, but not bootz.This may cause errors. So,
save regs for each handle_exception call to return to the correct place.
Example:
Target | Host
=>kgdb | (gdb)b bootz
| (gdb)c
=>bootz |
| (gdb)Here stop because of breakpoint
| (gdb)q
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Diffstat (limited to 'common/cmd_mem.c')
0 files changed, 0 insertions, 0 deletions
