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| author | Paul Mundt <lethal@linux-sh.org> | 2012-03-30 19:31:22 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-03-30 19:31:22 +0900 |
| commit | da47f4a3186b4f55914cceffb51adfa55ef4897e (patch) | |
| tree | c5098135dcbb2964a76da7d187b3620b3b2cead5 /arch | |
| parent | f03c4866d31e913a8dbc84f7d1459abdaf0bd326 (diff) | |
| download | blackbird-op-linux-da47f4a3186b4f55914cceffb51adfa55ef4897e.tar.gz blackbird-op-linux-da47f4a3186b4f55914cceffb51adfa55ef4897e.zip | |
sh: dwarf unwinder depends on SHcompact.
Presently there's no SHmedia support plugged in for the dwarf unwinder.
While it's trivial to provide an SHmedia version of dwarf_read_arch_reg(),
the general sh64 case is more complicated in that the TLB miss handler
uses a locked down set of registers for optimization (including the frame
pointer) which we need for the unwind table generation.
While freeing up the frame pointer for use in the TLB miss handler is
reasonably straightforward, it's still more trouble than it's worth, so
we simply restrict the unwinder to 32-bit for now.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/Kconfig.debug | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug index c1d5a820b1aa..5f2bb4242c0f 100644 --- a/arch/sh/Kconfig.debug +++ b/arch/sh/Kconfig.debug @@ -61,6 +61,7 @@ config DUMP_CODE config DWARF_UNWINDER bool "Enable the DWARF unwinder for stacktraces" select FRAME_POINTER + depends on SUPERH32 default n help Enabling this option will make stacktraces more accurate, at |
