From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [PATCH 3/4] target/arm: Implement UAO semantics
Date: Tue, 3 Dec 2019 15:42:43 -0800 [thread overview]
Message-ID: <20191203234244.9124-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20191203234244.9124-1-richard.henderson@linaro.org>
We need only override the current condition under which
TBFLAG_A64.UNPRIV is set.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/helper.c | 41 +++++++++++++++++++++--------------------
1 file changed, 21 insertions(+), 20 deletions(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 8941a6c10f..6d7a8349b5 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -12050,28 +12050,29 @@ static uint32_t rebuild_hflags_a64(CPUARMState *env, int el, int fp_el,
}
/* Compute the condition for using AccType_UNPRIV for LDTR et al. */
- /* TODO: ARMv8.2-UAO */
- switch (mmu_idx) {
- case ARMMMUIdx_EL10_1:
- case ARMMMUIdx_EL10_1_PAN:
- case ARMMMUIdx_SE1:
- case ARMMMUIdx_SE1_PAN:
- /* TODO: ARMv8.3-NV */
- flags = FIELD_DP32(flags, TBFLAG_A64, UNPRIV, 1);
- break;
- case ARMMMUIdx_EL20_2:
- case ARMMMUIdx_EL20_2_PAN:
- /* TODO: ARMv8.4-SecEL2 */
- /*
- * Note that EL20_2 is gated by HCR_EL2.E2H == 1, but EL20_0 is
- * gated by HCR_EL2.<E2H,TGE> == '11', and so is LDTR.
- */
- if (env->cp15.hcr_el2 & HCR_TGE) {
+ if (!(env->pstate & PSTATE_UAO)) {
+ switch (mmu_idx) {
+ case ARMMMUIdx_EL10_1:
+ case ARMMMUIdx_EL10_1_PAN:
+ case ARMMMUIdx_SE1:
+ case ARMMMUIdx_SE1_PAN:
+ /* TODO: ARMv8.3-NV */
flags = FIELD_DP32(flags, TBFLAG_A64, UNPRIV, 1);
+ break;
+ case ARMMMUIdx_EL20_2:
+ case ARMMMUIdx_EL20_2_PAN:
+ /* TODO: ARMv8.4-SecEL2 */
+ /*
+ * Note that EL20_2 is gated by HCR_EL2.E2H == 1, but EL20_0 is
+ * gated by HCR_EL2.<E2H,TGE> == '11', and so is LDTR.
+ */
+ if (env->cp15.hcr_el2 & HCR_TGE) {
+ flags = FIELD_DP32(flags, TBFLAG_A64, UNPRIV, 1);
+ }
+ break;
+ default:
+ break;
}
- break;
- default:
- break;
}
return rebuild_hflags_common(env, fp_el, mmu_idx, flags);
--
2.17.1
next prev parent reply other threads:[~2019-12-03 23:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-03 23:42 [PATCH 0/4] target/arm: Implement ARMv8.2-UAO Richard Henderson
2019-12-03 23:42 ` [PATCH 1/4] target/arm: Add ID_AA64MMFR2_EL1 Richard Henderson
2019-12-06 18:19 ` Peter Maydell
2020-02-02 0:54 ` Richard Henderson
2019-12-03 23:42 ` [PATCH 2/4] target/arm: Update MSR access to UAO Richard Henderson
2019-12-06 18:30 ` Peter Maydell
2019-12-06 19:00 ` Richard Henderson
2020-02-02 1:00 ` Richard Henderson
2020-02-02 13:29 ` Peter Maydell
2020-02-03 7:46 ` Richard Henderson
2019-12-03 23:42 ` Richard Henderson [this message]
2019-12-06 18:31 ` [PATCH 3/4] target/arm: Implement UAO semantics Peter Maydell
2019-12-03 23:42 ` [PATCH 4/4] target/arm: Enable ARMv8.2-UAO in -cpu max Richard Henderson
2019-12-06 18:31 ` Peter Maydell
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191203234244.9124-4-richard.henderson@linaro.org \
--to=richard.henderson@linaro.org \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).