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arch/tile: support new info op generated by compiler

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This just syncs the backtracing support in the kernel to the
upstream backtrace library.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2010-10-14 16:46:22 -04:00
parent 29507663df
commit c569cac8b6
2 changed files with 8 additions and 1 deletions
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5
arch/tile/include/asm/backtrace.h
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@ -146,7 +146,10 @@ enum {
CALLER_SP_IN_R52_BASE = 4, CALLER_SP_IN_R52_BASE = 4,
CALLER_SP_OFFSET_BASE = 8 CALLER_SP_OFFSET_BASE = 8,
/* Marks the entry point of certain functions. */
ENTRY_POINT_INFO_OP = 16
}; };

4
arch/tile/kernel/backtrace.c
View File

@ -369,6 +369,10 @@ static void find_caller_pc_and_caller_sp(CallerLocation *location,
/* Weird; reserved value, ignore it. */ /* Weird; reserved value, ignore it. */
continue; continue;
} }
if (info_operand & ENTRY_POINT_INFO_OP) {
/* This info op is ignored by the backtracer. */
continue;
}
/* Skip info ops which are not in the /* Skip info ops which are not in the
* "one_ago" mode we want right now. * "one_ago" mode we want right now.