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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-08 13:28:15 +0200 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-08 13:28:28 +0200 |
| commit | 5aa276efcbd67f4300ca1a7f809c6e00aadb03da (patch) | |
| tree | 9b8f0e074014cda8d42f5a97a95bc25082d8b764 /results/classifier/zero-shot-user-mode/instruction/2419 | |
| parent | 1a3c4faf4e0a25ed0b86e8739d5319a634cb9112 (diff) | |
| download | emulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.tar.gz emulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.zip | |
restructure results
Diffstat (limited to 'results/classifier/zero-shot-user-mode/instruction/2419')
| -rw-r--r-- | results/classifier/zero-shot-user-mode/instruction/2419 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/results/classifier/zero-shot-user-mode/instruction/2419 b/results/classifier/zero-shot-user-mode/instruction/2419 new file mode 100644 index 00000000..b6acda49 --- /dev/null +++ b/results/classifier/zero-shot-user-mode/instruction/2419 @@ -0,0 +1,24 @@ +instruction: 0.666 +runtime: 0.181 +syscall: 0.152 + + + +ldapr_stlr_i instructions doesn't consider signed offset +Description of problem: +The format ldapr_stlr_i models the load acquire / store release immediate instructions. \ +These instructions has a bug in the sign extension calculation of the imm field. \ +imm should be defined as s9 instead of 9. + +@ldapr_stlr_i .. ...... .. . imm:9 .. rn:5 rt:5 &ldapr_stlr_i + +Should be changed to: + +@ldapr_stlr_i .. ...... .. . imm:s9 .. rn:5 rt:5 &ldapr_stlr_i +Steps to reproduce: +1. Run ARM target +2. Generate any ldapr_stlr_i instructions (for example: LDAPUR) +3. When the imm value is negative, the immediate calculation is done wrong. In case the calculation leads to an undefined location, QEMU will fail. +Additional information: +In trans_LDAPR_i (translate-a64.c), when imm field is negative, the value of a->imm will be 512-x instead of x. \ +I already fixed the issue by adding the s9 to the imm field. This made a call to sextend32 for imm instead of extend32 in the generated file build/libqemu-aarch64-softmmu.fa.p/decode-a64.c.inc |