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ppc: fix crash in ppc system single step support

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There was a bogus case where two system debug ops get generated.  This
patch removes the broken system debug op. This was a left over after
making some changes to correctly generate debug ops on branch
operations inside gen_goto_tb();

The test case against this patch is to turn on single stepping with
timers, boot a linux kernel, set a breakpoint a do_fork and in gdb
execute "si 3000".  Then qemu-system-ppc will fault executing a debug
op, which should not have been executed.

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

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5391 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-10-01 22:01:37 +00:00
parent 3003b8bbf9
commit ee600be6a6
1 changed files with 0 additions and 4 deletions
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4
target-ppc/translate.c
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@ -3048,10 +3048,6 @@ static always_inline void gen_bcond (DisasContext *ctx, int type)
#endif
gen_op_btest_T1(ctx->nip);
no_test:
if (ctx->singlestep_enabled & GDBSTUB_SINGLE_STEP) {
gen_update_nip(ctx, ctx->nip);
gen_op_debug();
}
tcg_gen_exit_tb(0);
}
}