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[PATCH 09/13] target/hppa: Allow read-access to PSW with rsm 0, reg inst
From: |
deller |
Subject: |
[PATCH 09/13] target/hppa: Allow read-access to PSW with rsm 0, reg instruction |
Date: |
Wed, 7 Feb 2024 19:20:19 +0100 |
From: Helge Deller <deller@gmx.de>
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>
---
target/hppa/translate.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index 10fdc0813d..7e58775bbf 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -2156,10 +2156,16 @@ static bool trans_ldsid(DisasContext *ctx, arg_ldsid *a)
static bool trans_rsm(DisasContext *ctx, arg_rsm *a)
{
+#ifdef CONFIG_USER_ONLY
CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);
-#ifndef CONFIG_USER_ONLY
+#else
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);
tmp = tcg_temp_new_i64();
--
2.43.0
- [PATCH 04/13] hw/pci-host/astro: Avoid aborting on access failure, (continued)
- [PATCH 04/13] hw/pci-host/astro: Avoid aborting on access failure, deller, 2024/02/07
- [PATCH 07/13] target/hppa: Implement do_transaction_failed handler for I/O errors, deller, 2024/02/07
- [PATCH 03/13] target/hppa: Fix PSW_W and PSW_E bits in rsm, ssm and mtsm, deller, 2024/02/07
- [PATCH 08/13] lasi: Add reset I/O ports for LASI audio and FDC, deller, 2024/02/07
- [PATCH 06/13] lasi: allow access to LAN MAC address registers, deller, 2024/02/07
- [PATCH 02/13] target/hppa: Add "diag 0x101" for console output support, deller, 2024/02/07
- [PATCH 09/13] target/hppa: Allow read-access to PSW with rsm 0, reg instruction,
deller <=
- [PATCH 10/13] target/hppa: Check privilege only when PSW.P is set, deller, 2024/02/07
- [PATCH 11/13] target/hppa: PDC_BTLB_INFO uses 32-bit ints, deller, 2024/02/07
- [PATCH 01/13] disas/hppa: Add disassembly for qemu specific instructions, deller, 2024/02/07
- [PATCH 13/13] hw/hppa/machine: Load 64-bit firmware on 64-bit machines, deller, 2024/02/07
- [PATCH 12/13] target/hppa: Update SeaBIOS-hppa to version 16, deller, 2024/02/07