tree 230a6acdea201b38b7b3373c34d4ac2acd8c3e5d
parent 6049f4f831c6f409031dfa09282b38d0cbaecad8
author Jason Wessel <jason.wessel@windriver.com> 1264544990 -0600
committer Aurelien Jarno <aurelien@aurel32.net> 1267381202 +0100

target-i386: fix crash on x86 32bit linux host with hw breakpoint exceptions

If you make use of hw breakpoints on a 32bit x86 linux host, qemu
will segmentation fault when processing the exception.

The problem is that the value of env is stored in $ebp in the op_helper
raise_exception() function, and it can have the wrong value when
calling it from non generated code.

It is possible to work around the problem by restoring the value of
env before calling raise_exception() using a new helper function that
takes (CPUState *) as one of the arguments.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>