diff mbox series

[PULL,v2,5/9] target/hppa: Drop diag_getshadowregs_pa2 and diag_putshadowregs_pa2

Message ID 20250131092229.38232-6-deller@kernel.org (mailing list archive)
State New
Headers show
Series [PULL,v2,1/9] MAINTAINERS: Add myself as HPPA maintainer | expand

Commit Message

Helge Deller Jan. 31, 2025, 9:22 a.m. UTC 
From: Helge Deller <deller@gmx.de>

diag_getshadowregs_pa2() and diag_putshadowregs_pa2() were added in
commit 3bdf20819e68 based on some analysis of ODE code, but now they
conflict with the generic mfdiag/mtdiag instructions. I believe the
former analysis was wrong, so remove them again. Note that all diag
instructions are badly documented, so most things are based on reverse
engineering and thus may be wrong.

Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: 3bdf20819e68 ("target/hppa: Add diag instructions to set/restore shadow registers")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/hppa/insns.decode |  2 --
 target/hppa/translate.c  | 10 ----------
 2 files changed, 12 deletions(-)
diff mbox series

Patch

diff --git a/target/hppa/insns.decode b/target/hppa/insns.decode
index 71074a64c1..527c453443 100644
--- a/target/hppa/insns.decode
+++ b/target/hppa/insns.decode
@@ -646,8 +646,6 @@  xmpyu           001110 ..... ..... 010 .0111 .00 t:5    r1=%ra64 r2=%rb64
     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
 }
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index dc04f9f3c0..30fba5297a 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -4593,21 +4593,11 @@  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)
 {
     CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);