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target/hppa: Allow read-access to PSW with rsm 0,reg instruction 

HP-UX 11 and HP ODE tools use the "rsm 0,%reg" instruction in not priviledged
code paths to get the current PSW flags. The constant 0 means that no bits of
the PSW shall be reset, so this is effectively a read-only access to the PSW.
Allow this read-only access even for not privileged code.

Signed-off-by: Helge Deller <deller@gmx.de>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Helge Deller 2024-02-07 00:49:28 +01:00
parent 32d26ea407
commit 7b2d70a175
1 changed files with 7 additions and 1 deletions
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8
target/hppa/translate.c
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@ -2156,10 +2156,16 @@ static bool trans_ldsid(DisasContext *ctx, arg_ldsid *a)
static bool trans_rsm(DisasContext *ctx, arg_rsm *a) static bool trans_rsm(DisasContext *ctx, arg_rsm *a)
{ {
#ifdef CONFIG_USER_ONLY
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR); CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);
#ifndef CONFIG_USER_ONLY #else
TCGv_i64 tmp; TCGv_i64 tmp;
/* HP-UX 11i and HP ODE use rsm for read-access to PSW */
if (a->i) {
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);
}
nullify_over(ctx); nullify_over(ctx);
tmp = tcg_temp_new_i64(); tmp = tcg_temp_new_i64();