1 files changed, 37 insertions, 0 deletions

diff --git a/gitlab/issues/target_arm/host_missing/accel_missing/1878.toml b/gitlab/issues/target_arm/host_missing/accel_missing/1878.toml
new file mode 100644
index 00000000..dc497da3
--- /dev/null
+++ b/gitlab/issues/target_arm/host_missing/accel_missing/1878.toml
@@ -0,0 +1,37 @@
+id = 1878
+title = "QEMU doesn't implement ARMv4/v5 legacy SCTLR.U==0 load-and-rotate unaligned access handling"
+state = "opened"
+created_at = "2023-09-11T14:22:36.971Z"
+closed_at = "n/a"
+labels = ["target: arm"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1878"
+host-os = "Windows 11 Pro 22H2"
+host-arch = "x64"
+qemu-version = "8.0.94 (v8.1.0-rc4-12032-g74a4cbee04)"
+guest-os = "bare metal software"
+guest-arch = "ARM"
+description = """**ldr r7, \\[r0, r1\\]** works differently on real device and QEMU. Probably all **ldr Rd, \\[Rs\\]** commands works wrongly in QEMU with Raspberry Pi emulation."""
+reproduce = """1. Launch the attached software **kernel_qemu.img** in QEMU.
+2. Launch the attached software **kerenel.img** on real Raspberry Pi 1B+.
+3. Look at the r7. It contains different data."""
+additional = """**kernel_qemu.img** and **kerenel.img** are the same program. It just compiled with different origins - 0x8000 for real device and 0x10000 for QEMU. But code inside the program works at the same addresses.
+
+r0 = 0x183a4
+
+r1 = 0x817
+
+**\\[r0, r1\\]** points to byte 0x42 in memory with such data:
+
+**0x80 0x15 0x22 \\[0x42\\] 0x03 0x21 0x87**
+
+After **ldr r7, \\[r0, r1\\]** execution real device puts to r7: **0x22158042**
+
+After **ldr r7, \\[r0, r1\\]** execution QEMU puts to r7: **0x87210342**
+
+QEMU:
+
+![QEMU.png](/uploads/51ecbf1689d36f969cb482f2613ccb58/QEMU.png)
+
+Real Raspberry Pi 1B+: ![real.jpg](/uploads/2a9cc3f4bc33d7f254c549e5086070a7/real.jpg)
+
+[kernel_qemu.img](/uploads/ae6a7490660569d5fe56adc9f4dde85d/kernel_qemu.img) [kernel.img](/uploads/48c94a66370c1fe8720fe89603c45c7b/kernel.img)"""