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Diffstat (limited to 'gitlab/issues/target_arm/host_missing/accel_missing/1878.toml')
| -rw-r--r-- | gitlab/issues/target_arm/host_missing/accel_missing/1878.toml | 37 |
1 files changed, 0 insertions, 37 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 deleted file mode 100644 index dc497da3b..000000000 --- a/gitlab/issues/target_arm/host_missing/accel_missing/1878.toml +++ /dev/null @@ -1,37 +0,0 @@ -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: - - - -Real Raspberry Pi 1B+:  - -[kernel_qemu.img](/uploads/ae6a7490660569d5fe56adc9f4dde85d/kernel_qemu.img) [kernel.img](/uploads/48c94a66370c1fe8720fe89603c45c7b/kernel.img)""" |