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[Qemu-devel] [PATCH v2 38/68] target/arm: Convert Unallocated memory hin
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH v2 38/68] target/arm: Convert Unallocated memory hint |
Date: |
Mon, 19 Aug 2019 14:37:25 -0700 |
Signed-off-by: Richard Henderson <address@hidden>
---
target/arm/translate.c | 8 --------
target/arm/a32-uncond.decode | 8 ++++++++
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/target/arm/translate.c b/target/arm/translate.c
index a30a9bb4e0..9ec6b25c03 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -10216,14 +10216,6 @@ static void disas_arm_insn(DisasContext *s, unsigned
int insn)
}
return;
}
- if (((insn & 0x0f700000) == 0x04100000) ||
- ((insn & 0x0f700010) == 0x06100000)) {
- if (!arm_dc_feature(s, ARM_FEATURE_V7MP)) {
- goto illegal_op;
- }
- return; /* v7MP: Unallocated memory hint: must NOP */
- }
-
if ((insn & 0x0e000f00) == 0x0c000100) {
if (arm_dc_feature(s, ARM_FEATURE_IWMMXT)) {
/* iWMMXt register transfer. */
diff --git a/target/arm/a32-uncond.decode b/target/arm/a32-uncond.decode
index aed381cb8e..afa95bf7aa 100644
--- a/target/arm/a32-uncond.decode
+++ b/target/arm/a32-uncond.decode
@@ -64,3 +64,11 @@ PLI 1111 0100 -101 ---- 1111 ---- ---- ----
# (imm, lit) 7
PLD 1111 0111 -101 ---- 1111 ----- -- 0 ---- # (register) 5te
PLDW 1111 0111 -001 ---- 1111 ----- -- 0 ---- # (register) 7mp
PLI 1111 0110 -101 ---- 1111 ----- -- 0 ---- # (register) 7
+
+# Unallocated memory hints
+#
+# Since these are v7MP nops, and PLDW is v7MP and implemented as nop,
+# (ab)use the PLDW helper.
+
+PLDW 1111 0100 -001 ---- ---- ---- ---- ----
+PLDW 1111 0110 -001 ---- ---- ---- ---0 ----
--
2.17.1
- Re: [Qemu-devel] [PATCH v2 35/68] target/arm: Convert CPS (privileged), (continued)
[Qemu-devel] [PATCH v2 36/68] target/arm: Convert SETEND, Richard Henderson, 2019/08/19
[Qemu-devel] [PATCH v2 30/68] target/arm: Diagnose base == pc for LDM/STM, Richard Henderson, 2019/08/19
[Qemu-devel] [PATCH v2 34/68] target/arm: Convert Clear-Exclusive, Barriers, Richard Henderson, 2019/08/19
[Qemu-devel] [PATCH v2 37/68] target/arm: Convert PLI, PLD, PLDW, Richard Henderson, 2019/08/19
[Qemu-devel] [PATCH v2 38/68] target/arm: Convert Unallocated memory hint,
Richard Henderson <=
[Qemu-devel] [PATCH v2 41/68] target/arm: Convert TT, Richard Henderson, 2019/08/19
[Qemu-devel] [PATCH v2 39/68] target/arm: Convert Table Branch, Richard Henderson, 2019/08/19
[Qemu-devel] [PATCH v2 40/68] target/arm: Convert SG, Richard Henderson, 2019/08/19
[Qemu-devel] [PATCH v2 44/68] target/arm: Add skeleton for T16 decodetree, Richard Henderson, 2019/08/19