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authorChristian Krinitsin <mail@krinitsin.com>2025-05-21 21:21:26 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-05-21 21:21:26 +0200
commit4b927bc37359dec23f67d3427fc982945f24f404 (patch)
tree245449ef9146942dc7fffd0235b48b7e70a00bf2 /gitlab/issues/target_arm/host_missing/accel_missing/1488.toml
parentaa8bd79cec7bf6790ddb01d156c2ef2201abbaab (diff)
downloadqemu-analysis-4b927bc37359dec23f67d3427fc982945f24f404.tar.gz
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add gitlab issues in toml format
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+id = 1488
+title = "Memory not accessible from GDB when using mps3-an547"
+state = "closed"
+created_at = "2023-02-13T12:30:05.839Z"
+closed_at = "2023-04-05T16:54:43.626Z"
+labels = ["GDB", "target: arm"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1488"
+host-os = "Ubuntu 20.04.5 LTS"
+host-arch = "x86"
+qemu-version = "7.2.0"
+guest-os = "none (bare-metal)"
+guest-arch = "cortex-m55, Armv8.1-M"
+description = """Memory (including variables) is not accessible when connecting to the emulated machine via GDB"""
+reproduce = """1. Create minimal program `main.c`:
+    ```c
+    int main(void) {
+        int myvar = 42;
+        for(;;)
+    }
+    ```
+2. Compile
+   ```bash
+    arm-none-eabi-gcc -c -o build/main.o -c -mcpu=cortex-m55 -mfloat-abi=hard -mthumb -funsigned-char -mlittle-endian -O0 -g -std=c11  main.c
+    ```
+    (ARM startup files and include directories omitted for brevity)
+3. Link 
+    ```bash
+    arm-none-eabi-g++ -o build/test.elf build/main.o -mcpu=cortex-m55 -mfloat-abi=hard -mthumb -funsigned-char -mlittle-endian --entry=Reset_Handler -static -T./platform.ld -O0 -g
+    ```
+    (ARM startup files omitted for brevity)
+4. Run binary in QEMU:
+   ```bash
+    qemu-system-arm --machine mps3-an547 -serial mon:stdio -kernel test.elf -gdb tcp::1234 -S
+    ```
+5. Attach using GDB `arm-none-eabi-gdb build/test.elf` and set break point to infinite loop
+   ```gdb
+   target remote :1234
+   break main.c:18
+   continue
+   print myvar
+   ```
+
+Expected Output: 42  
+Actual Output: `Cannot access memory at address 0x11fffe4`"""
+additional = "n/a"