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target/hppa: Add instruction decoding for mfdiag and mtdiag

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Add 32- and 64-bit instruction decoding of the mfdiag and mtdiag
instructions which modify the diagnose registers.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Helge Deller 2025-01-29 04:28:57 +01:00
parent 009e0927f3
commit f7aa7fa97c
2 changed files with 24 additions and 0 deletions
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4
target/hppa/insns.decode
View file

@ -644,8 +644,12 @@ xmpyu 001110 ..... ..... 010 .0111 .00 t:5 r1=%ra64 r2=%rb64
# For 32-bit PA-7300LC (PCX-L2)
diag_getshadowregs_pa1 000101 00 0000 0000 0001 1010 0000 0000
diag_putshadowregs_pa1 000101 00 0000 0000 0001 1010 0100 0000
diag_mfdiag 000101 dr:5 rt:5 0000 0110 0000 0000
diag_mtdiag 000101 dr:5 r1:5 0001 0110 0000 0000
# For 64-bit PA8700 (PCX-W2)
diag_mfdiag 000101 dr:5 0 0000 0000 1000 101 rt:5
diag_mtdiag 000101 dr:5 r1:5 0001 1000 0100 0000
]
diag_unimp 000101 i:26
}

20
target/hppa/translate.c
View file

@ -4598,6 +4598,26 @@ static bool trans_diag_putshadowregs_pa1(DisasContext *ctx, arg_empty *a)
return !ctx->is_pa20 && do_putshadowregs(ctx);
}
static bool trans_diag_mfdiag(DisasContext *ctx, arg_diag_mfdiag *a)
{
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);
nullify_over(ctx);
TCGv_i64 dest = dest_gpr(ctx, a->rt);
tcg_gen_ld_i64(dest, tcg_env,
offsetof(CPUHPPAState, dr[a->dr]));
save_gpr(ctx, a->rt, dest);
return nullify_end(ctx);
}
static bool trans_diag_mtdiag(DisasContext *ctx, arg_diag_mtdiag *a)
{
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);
nullify_over(ctx);
tcg_gen_st_i64(load_gpr(ctx, a->r1), tcg_env,
offsetof(CPUHPPAState, dr[a->dr]));
return nullify_end(ctx);
}
static bool trans_diag_unimp(DisasContext *ctx, arg_diag_unimp *a)
{
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);