diff options
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/mistranslation/1768295')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/mistranslation/1768295 | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/mistranslation/1768295 b/results/classifier/deepseek-2-tmp/output/mistranslation/1768295 deleted file mode 100644 index dad2b71d..00000000 --- a/results/classifier/deepseek-2-tmp/output/mistranslation/1768295 +++ /dev/null @@ -1,37 +0,0 @@ - -VLLDM/VLSTM trigger UsageFault in the Secure Mode - -The VLLDM/VLSTM instructions trigger UsageFault when they are supposed to behave as NOP. - -Version: -$ qemu-system-arm --version QEMU emulator version 2.11.93 - -VLLDM and VLSTM are instructions newly added to ARMv8-M Mainline Profile. Although they are FP instructions and the FP support of the M profile is not implemented by QEMU, the Armv8-M Architecture Reference Manual specifies that they should behave as NOP even in this case: - -C2.4.268 VLLDM: - -> If the Floating-point Extension is not implemented, this instruction is available in Secure state, but behaves as a NOP. - -C2.4.269 VLSTM: - -> If the Floating-point Extension is not implemented, this instruction is available in Secure state, but behaves as a NOP. - -VLLDM and VLSTM are generated automatically by the compiler to save and restore the floating point registers (in a lazy manner) during a Non-Secure function call. An example is shown below: - -10000064 <__gnu_cmse_nonsecure_call>: -10000064: e92d 4fe0 stmdb sp!, {r5, r6, r7, r8, r9, sl, fp, lr} -10000068: 4627 mov r7, r4 -1000006a: 46a0 mov r8, r4 -1000006c: 46a1 mov r9, r4 -1000006e: 46a2 mov sl, r4 -10000070: 46a3 mov fp, r4 -10000072: 46a4 mov ip, r4 -10000074: b0a2 sub sp, #136 ; 0x88 -10000076: ec2d 0a00 vlstm sp -1000007a: f384 8800 msr CPSR_f, r4 -1000007e: 4625 mov r5, r4 -10000080: 4626 mov r6, r4 -10000082: 47a4 blxns r4 -10000084: ec3d 0a00 vlldm sp -10000088: b022 add sp, #136 ; 0x88 -1000008a: e8bd 8fe0 ldmia.w sp!, {r5, r6, r7, r8, r9, sl, fp, pc} \ No newline at end of file |