From 9260319e7411ff8281700a532caa436f40120ec4 Mon Sep 17 00:00:00 2001 From: Christian Krinitsin Date: Fri, 30 May 2025 16:52:07 +0200 Subject: gitlab scraper: download in toml and text format --- .../target_arm/host_missing/accel_missing/1850 | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 gitlab/issues_text/target_arm/host_missing/accel_missing/1850 (limited to 'gitlab/issues_text/target_arm/host_missing/accel_missing/1850') diff --git a/gitlab/issues_text/target_arm/host_missing/accel_missing/1850 b/gitlab/issues_text/target_arm/host_missing/accel_missing/1850 new file mode 100644 index 000000000..ceda953ab --- /dev/null +++ b/gitlab/issues_text/target_arm/host_missing/accel_missing/1850 @@ -0,0 +1,29 @@ +AARCH64 Illegal Instruction (CurrentEL) +Description of problem: +While emulating Aarch64 in QEMU, whenever the instruction `CurrentEL` is executed, +QEMU crashes with the following message. + +`qemu: uncaught target signal 4 (Illegal instruction) - core dumped +Illegal instruction (core dumped)` + +I've tried both QEMU user space translation (qemu-aarch64-static) and QEMU emulation (qemu-system-aarch64), +and both fail with the above message. + +C Code to reproduce bug, courtesy of https://github.com/cirosantilli/linux-kernel-module-cheat/blob/35684b1b7e0a04a68987056cb15abd97e3d2f0cc/baremetal/arch/aarch64/el.c +``` +#include +#include + +int main(void) { + register uint64_t x0 __asm__ ("x0"); + __asm__ ("mrs x0, CurrentEL;" : : : "%x0"); + printf("%" PRIu64 "\n", x0 >> 2); + return 0; +} +``` +Steps to reproduce: +1. Copy C code above into file. +2. Compile code `gcc ./main.c --static` +3. Execute elf bin `./a.out` +Additional information: + -- cgit 1.4.1