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tdep/1291: backtrace for sh3 does not work for local variables with more than 256 bytes
- From: inaba at src dot ricoh dot co dot jp
- To: gdb-gnats at sources dot redhat dot com
- Date: 19 Jul 2003 15:37:40 -0000
- Subject: tdep/1291: backtrace for sh3 does not work for local variables with more than 256 bytes
- Reply-to: inaba at src dot ricoh dot co dot jp
>Number: 1291
>Category: tdep
>Synopsis: backtrace for sh3 does not work for local variables with more than 256 bytes
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: patch
>Submitter-Id: net
>Arrival-Date: Sat Jul 19 15:38:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: inaba@src.ricoh.co.jp
>Release: unknown-1.0
>Organization:
>Environment:
sh3-linux with gcc-3.0.3 but can be repeated with other
sh3 based environment.
>Description:
New (I think) gcc uses 'mov @(disp,pc),r1' and 'sub r1,r15'
instructions when constructing frames with more than 256
bytes local variables. This makes backtracing of gdb does
not properly display with these functions.
>How-To-Repeat:
By using example progmram, you can display proper backtrace
in sub1 but not in sub2.
-----------------------------------------------------------
#include <stdio.h>
main()
{
printf("hello world\n");
sub1();
sub2();
}
sub1()
{
int buf[64];
}
sub2()
{
int buf[65];
}
>Fix:
Attached patch fixes this problem.
>Release-Note:
>Audit-Trail:
>Unformatted:
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