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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
commitdee4dcba78baf712cab403d47d9db319ab7f95d6 (patch)
tree418478faf06786701a56268672f73d6b0b4eb239 /results/classifier/108/debug/2279
parent4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff)
downloademulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz
emulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip
restructure results
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diff --git a/results/classifier/108/debug/2279 b/results/classifier/108/debug/2279
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@@ -1,40 +0,0 @@
-debug: 0.954
-graphic: 0.951
-other: 0.923
-device: 0.832
-performance: 0.828
-semantic: 0.784
-network: 0.762
-vnc: 0.707
-files: 0.690
-socket: 0.685
-permissions: 0.626
-PID: 0.616
-KVM: 0.506
-boot: 0.462
-
-Debugging with Lauterbach Trace32 -> Cortex-A76, no SP register update
-Description of problem:
-We do not see changes in the SP_EL1 register value when debugging the QEMU application with Lauterbach Trace32.
-Steps to reproduce:
-1. Compile bare metal code that uses push and pop instructions (stack).
-2. Run QEMU with bare metal code.
-3. Connect via Lauterbach Trace32 and check the displayed SP register value.
-Additional information:
-![T32_badA76_SP_reg_display](/uploads/e6af1ac3e32072274089e6dc0cdf0266/T32_badA76_SP_reg_display.png)
-This is a screenshot from QEMU 8.0.0, but updating to QEMU 8.2.0 does not resolve the problem.
-
-I have discussed this with Lauterbach Trace32 support with these results:
-- Trace32 uses RSP protocol `p` packets to read some registers, including SP_EL1. GDB seems to use `g` packet.
-- QEMU responds to `p` packet with an invalid value, which causes Trace32 to display invalid value.
-
-Some related RSP protocol logs from Trace32.
-![T32_sp_1](/uploads/cbe34d19d3ede30549e6c4d781bb6630/T32_sp_1.png)
-![T32_sp_2](/uploads/73e22dbf83ec00b939077dfeb7bfa208/T32_sp_2.png)
-
-Different part of RSP protocol log:
-```
-Sending packet: $p20#d2 ...
-receiving packet: ec00004000000000
-```
-So it looks like Trace32 can receive different values that zero as response to `p` packet.