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target/hppa: Check for page crossings in use_goto_tb

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We got away with eliding this check when target/hppa was user-only,
but missed adding this check when adding system support.

Fixes an early crash in the HP-UX 11 installer.

Reported-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-03-08 10:49:57 -08:00
parent 46316f1dff
commit f3b423ec6e
1 changed files with 4 additions and 6 deletions
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10
target/hppa/translate.c
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@ -816,12 +816,10 @@ static bool gen_illegal(DisasContext *ctx)
static bool use_goto_tb(DisasContext *ctx, target_ureg dest) static bool use_goto_tb(DisasContext *ctx, target_ureg dest)
{ {
/* Suppress goto_tb in the case of single-steping and IO. */ /* Suppress goto_tb for page crossing, IO, or single-steping. */
if ((tb_cflags(ctx->base.tb) & CF_LAST_IO) return !(((ctx->base.pc_first ^ dest) & TARGET_PAGE_MASK)
|| ctx->base.singlestep_enabled) { || (tb_cflags(ctx->base.tb) & CF_LAST_IO)
return false; || ctx->base.singlestep_enabled);
}
return true;
} }
/* If the next insn is to be nullified, and it's on the same page, /* If the next insn is to be nullified, and it's on the same page,