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Diffstat (limited to 'gitlab/issues/target_i386/host_missing/accel_TCG/1375.toml')
| -rw-r--r-- | gitlab/issues/target_i386/host_missing/accel_TCG/1375.toml | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/gitlab/issues/target_i386/host_missing/accel_TCG/1375.toml b/gitlab/issues/target_i386/host_missing/accel_TCG/1375.toml deleted file mode 100644 index d6d751c4..00000000 --- a/gitlab/issues/target_i386/host_missing/accel_TCG/1375.toml +++ /dev/null @@ -1,27 +0,0 @@ -id = 1375 -title = "x86 SSE/SSE2/SSE3 instruction semantic bugs with NaN" -state = "opened" -created_at = "2022-12-16T07:49:50.158Z" -closed_at = "n/a" -labels = ["Softfloat", "accel: TCG", "target: i386", "workflow::Triaged"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1375" -host-os = "Windows 10 20H2" -host-arch = "x86" -qemu-version = "7.1.90 (v7.2.0-rc0)" -guest-os = "None" -guest-arch = "x86" -description = """The result of SSE/SSE2/SSE3 instructions with NaN is different from the CPU. From Intel manual Volume 1 Appendix D.4.2.2, they defined the behavior of such instructions with NaN. But I think QEMU did not implement this semantic exactly because the byte result is different.""" -reproduce = """1. Compile this code -``` -void main() { - asm("mov rax, 0x000000007fffffff; push rax; mov rax, 0x00000000ffffffff; push rax; movdqu XMM1, [rsp];"); - asm("mov rax, 0x2e711de7aa46af1a; push rax; mov rax, 0x7fffffff7fffffff; push rax; movdqu XMM2, [rsp];"); - asm("addsubps xmm1, xmm2"); -} -``` -2. Execute and compare the result with the CPU. This problem happens with other SSE/SSE2/SSE3 instructions specified in the manual, Volume 1 Appendix D.4.2.2. - - CPU - - xmm1[3] = 0xffffffff - - QEMU - - xmm1[3] = 0x7fffffff""" -additional = """This bug is discovered by research conducted by KAIST SoftSec.""" |