1 files changed, 86 insertions, 0 deletions
diff --git a/results/classifier/118/none/452 b/results/classifier/118/none/452
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+architecture: 0.638
+permissions: 0.563
+peripherals: 0.561
+ppc: 0.535
+device: 0.529
+PID: 0.513
+files: 0.476
+performance: 0.460
+TCG: 0.451
+register: 0.411
+boot: 0.382
+x86: 0.366
+risc-v: 0.360
+graphic: 0.329
+virtual: 0.311
+debug: 0.297
+kernel: 0.286
+i386: 0.281
+arm: 0.272
+user-level: 0.270
+semantic: 0.264
+hypervisor: 0.250
+network: 0.250
+socket: 0.218
+VMM: 0.212
+vnc: 0.205
+assembly: 0.204
+KVM: 0.133
+mistranslation: 0.113
+
+Akita (and probably all Spitz-like / PXA270) platform does not load BIOS binary
+Description of problem:
+QEMU does not appear to load a binary file passed with the "-bios" argument for the "akita" target. This probably extends to other spitz-type systems.
+
+Exptected behavior: qemu loads the binary into address 0x0000.
+Actual behavior: address space at 0x0000 contains only zeros.
+Steps to reproduce:
+Terminal 1:
+```
+qemu-system-arm -M akita -bios c750.rom -s -S
+```
+
+Terminal 2: 
+```
+gdb-multiarch
+target remote localhost:1234
+x/64i $pc
+```
+
+Result:
+```
+=> 0x0: andeq   r0, r0, r0
+   0x4: andeq   r0, r0, r0
+   0x8: andeq   r0, r0, r0
+   0xc: andeq   r0, r0, r0
+   0x10:        andeq   r0, r0, r0
+```
+
+Correct behavior (can demonstrate with virt machine):
+Same as before, but start Terminal 1 with:
+```
+qemu-system-arm -M akita -bios c750.rom -s -S
+```
+
+Result:
+```
+=> 0x0: b       0x34
+   0x4: ldr     pc, [pc, #156]  ; 0xa8
+   0x8: ldr     pc, [pc, #156]  ; 0xac
+   0xc: ldr     pc, [pc, #156]  ; 0xb0
+   0x10:        ldr     pc, [pc, #156]  ; 0xb4
+   0x14:        nop                     ; (mov r0, r0)
+   0x18:        ldr     pc, [pc, #152]  ; 0xb8
+   0x1c:        ldr     pc, [pc, #152]  ; 0xbc
+   0x20:        mov     r0, #128        ; 0x80
+   0x24:        b       0x2c
+   0x28:        mov     r0, #129        ; 0x81
+   0x2c:        ldr     r1, [pc, #140]  ; 0xc0
+   0x30:        str     r0, [r1]
+   0x34:        mrs     lr, CPSR
+   0x38:        bic     lr, lr, #31
+   0x3c:        orr     lr, lr, #211    ; 0xd3
+   0x40:        msr     CPSR_fc, lr
+```
+Additional information:
+File with very tiny boot ROM: [c750-tiny.rom](/uploads/045852c8b353174bf0b7a4193d0d1be0/c750-tiny.rom)