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target/hppa: Add diag instructions to set/restore shadow registers

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The 32-bit PA-7300LC (PCX-L2) CPU and the 64-bit PA8700 (PCX-W2) CPU
use different diag instructions to save or restore the CPU registers
to/from the shadow registers.

Implement those per-CPU architecture diag instructions to fix those
parts of the HP ODE testcases (L2DIAG and WDIAG, section 1) which test
the shadow registers.

Signed-off-by: Helge Deller <deller@gmx.de>
[rth: Use decodetree to distinguish cases]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Helge Deller <deller@gmx.de>
Tested-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2024-03-26 07:39:40 -10:00 • committed by Richard Henderson
parent 381931275a
commit 3bdf20819e
2 changed files with 44 additions and 0 deletions
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10
target/hppa/insns.decode
View file

@ -65,6 +65,8 @@
# Argument set definitions # Argument set definitions
#### ####
&empty
# All insns that need to form a virtual address should use this set. # All insns that need to form a virtual address should use this set.
&ldst t b x disp sp m scale size &ldst t b x disp sp m scale size
@ -638,6 +640,14 @@ xmpyu 001110 ..... ..... 010 .0111 .00 t:5 r1=%ra64 r2=%rb64
[ [
diag_btlb 000101 00 0000 0000 0000 0001 0000 0000 diag_btlb 000101 00 0000 0000 0000 0001 0000 0000
diag_cout 000101 00 0000 0000 0000 0001 0000 0001 diag_cout 000101 00 0000 0000 0000 0001 0000 0001
# 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
# For 64-bit PA8700 (PCX-W2)
diag_getshadowregs_pa2 000101 00 0111 1000 0001 1000 0100 0000
diag_putshadowregs_pa2 000101 00 0111 0000 0001 1000 0100 0000
] ]
diag_unimp 000101 i:26 diag_unimp 000101 i:26
} }

34
target/hppa/translate.c
View file

@ -2399,6 +2399,20 @@ static bool do_getshadowregs(DisasContext *ctx)
return nullify_end(ctx); return nullify_end(ctx);
} }
static bool do_putshadowregs(DisasContext *ctx)
{
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);
nullify_over(ctx);
tcg_gen_st_i64(cpu_gr[1], tcg_env, offsetof(CPUHPPAState, shadow[0]));
tcg_gen_st_i64(cpu_gr[8], tcg_env, offsetof(CPUHPPAState, shadow[1]));
tcg_gen_st_i64(cpu_gr[9], tcg_env, offsetof(CPUHPPAState, shadow[2]));
tcg_gen_st_i64(cpu_gr[16], tcg_env, offsetof(CPUHPPAState, shadow[3]));
tcg_gen_st_i64(cpu_gr[17], tcg_env, offsetof(CPUHPPAState, shadow[4]));
tcg_gen_st_i64(cpu_gr[24], tcg_env, offsetof(CPUHPPAState, shadow[5]));
tcg_gen_st_i64(cpu_gr[25], tcg_env, offsetof(CPUHPPAState, shadow[6]));
return nullify_end(ctx);
}
static bool trans_getshadowregs(DisasContext *ctx, arg_getshadowregs *a) static bool trans_getshadowregs(DisasContext *ctx, arg_getshadowregs *a)
{ {
return do_getshadowregs(ctx); return do_getshadowregs(ctx);
@ -4594,6 +4608,26 @@ static bool trans_diag_cout(DisasContext *ctx, arg_diag_cout *a)
#endif #endif
} }
static bool trans_diag_getshadowregs_pa1(DisasContext *ctx, arg_empty *a)
{
return !ctx->is_pa20 && do_getshadowregs(ctx);
}
static bool trans_diag_getshadowregs_pa2(DisasContext *ctx, arg_empty *a)
{
return ctx->is_pa20 && do_getshadowregs(ctx);
}
static bool trans_diag_putshadowregs_pa1(DisasContext *ctx, arg_empty *a)
{
return !ctx->is_pa20 && do_putshadowregs(ctx);
}
static bool trans_diag_putshadowregs_pa2(DisasContext *ctx, arg_empty *a)
{
return ctx->is_pa20 && do_putshadowregs(ctx);
}
static bool trans_diag_unimp(DisasContext *ctx, arg_diag_unimp *a) static bool trans_diag_unimp(DisasContext *ctx, arg_diag_unimp *a)
{ {
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR); CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);