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Commit abb0cd93494 breaks -singlestep -d in_asm,cpu with qemu-system-sh4
From: |
BALATON Zoltan |
Subject: |
Commit abb0cd93494 breaks -singlestep -d in_asm,cpu with qemu-system-sh4 |
Date: |
Mon, 25 Oct 2021 23:16:30 +0200 (CEST) |
Hello,
Commit abb0cd93494 (accel/tcg: Split out log_cpu_exec) seems to have
broken -singlestep -d in_asm,cpu output with qemu-system-sh4 after a delay
slot. Since that commit I get:
pc=0xac80003e sr=0x500000f1 pr=0x00000000 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0x00000000 fpul=0x00000000
r0=0x8cc9d000 r1=0xacc9d000 r2=0xe0000000 r3=0x8c800000
r4=0x00000000 r5=0x00000000 r6=0x00000000 r7=0x00000000
r8=0x00000000 r9=0x00000000 r10=0x00000000 r11=0x00000000
r12=0x00000000 r13=0x00000000 r14=0x00000000 r15=0x00000000
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
----------------
IN:
0xac800040: bt.s 0xac80001a
pc=0xac800040 sr=0x500000f1 pr=0x00000000 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0x00000000 fpul=0x00000000
r0=0x8cc9cfe0 r1=0xacc9d000 r2=0xe0000000 r3=0x8c800000
r4=0x00000000 r5=0x00000000 r6=0x00000000 r7=0x00000000
r8=0x00000000 r9=0x00000000 r10=0x00000000 r11=0x00000000
r12=0x00000000 r13=0x00000000 r14=0x00000000 r15=0x00000000
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
----------------
IN:
0xac800042: add #-32,r1
pc=0xac800042 sr=0x500000f1 pr=0x00000000 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0xac80001a fpul=0x00000000
r0=0x8cc9cfe0 r1=0xacc9d000 r2=0xe0000000 r3=0x8c800000
r4=0x00000000 r5=0x00000000 r6=0x00000000 r7=0x00000000
r8=0x00000000 r9=0x00000000 r10=0x00000000 r11=0x00000000
r12=0x00000000 r13=0x00000000 r14=0x00000000 r15=0x00000000
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
in conditional delay slot (delayed_pc=0xac80001a)
pc=0xac80001a sr=0x500000f1 pr=0x00000000 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0xac80001a fpul=0x00000000
r0=0x8cc9cfe0 r1=0xacc9cfe0 r2=0xe0000000 r3=0x8c800000
r4=0x00000000 r5=0x00000000 r6=0x00000000 r7=0x00000000
r8=0x00000000 r9=0x00000000 r10=0x00000000 r11=0x00000000
r12=0x00000000 r13=0x00000000 r14=0x00000000 r15=0x00000000
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
pc=0xac80001c sr=0x500000f1 pr=0x00000000 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0xac80001a fpul=0x00000000
r0=0x8cc9cfe0 r1=0xacc9cfe0 r2=0xe0000000 r3=0x8c800000
r4=0x00000000 r5=0x00000000 r6=0x00000000 r7=0x00000000
r8=0x00000000 r9=0x00000000 r10=0x00000000 r11=0x00000000
r12=0x00000000 r13=0x00000000 r14=0x00000000 r15=0x00000000
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
After the first delay slot no more in_asm output is printed. Going back to
the commit before or reverting that commit I get normal output:
----------------
IN:
0x8c801574: bra 0x8c801528
pc=0x8c801574 sr=0x500000f0 pr=0x8c8013d6 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0x8c801594 fpul=0x00000000
r0=0x00000007 r1=0x0000000e r2=0x8cca1084 r3=0xfffffff9
r4=0x00000137 r5=0xfffffffa r6=0x8cca1570 r7=0x00000012
r8=0x8cca1044 r9=0x00000011 r10=0x00000005 r11=0x00097d36
r12=0x8cca1014 r13=0x0000000f r14=0x8cc0183c r15=0x8cca0f80
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
----------------
IN:
0x8c801576: add #-7,r5
pc=0x8c801576 sr=0x500000f0 pr=0x8c8013d6 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0x8c801528 fpul=0x00000000
r0=0x00000007 r1=0x0000000e r2=0x8cca1084 r3=0xfffffff9
r4=0x00000137 r5=0xfffffffa r6=0x8cca1570 r7=0x00000012
r8=0x8cca1044 r9=0x00000011 r10=0x00000005 r11=0x00097d36
r12=0x8cca1014 r13=0x0000000f r14=0x8cc0183c r15=0x8cca0f80
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
in delay slot (delayed_pc=0x8c801528)
----------------
IN:
0x8c800964: .word 0x0000
pc=0x8c800964 sr=0x500000f1 pr=0x8c801654 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0x8c800964 fpul=0x00000000
r0=0x0000001b r1=0xac8009ca r2=0x8cc9956d r3=0xfffffefe
r4=0x8cca1014 r5=0x00000000 r6=0x0142850a r7=0x8cc5001e
r8=0x8cca1044 r9=0x00000102 r10=0x00000000 r11=0x00000000
r12=0xac8009ca r13=0xac8009aa r14=0x00000000 r15=0x8cca0f28
r16=0x00000000 r17=0x500000f0 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
----------------
IN:
0xac800000: mov.l 0xac80007c,r1 ! 0x500000f0
pc=0xac800000 sr=0x700000f0 pr=0x00000000 fpscr=0x00040001
spc=0x00000000 ssr=0x00000000 gbr=0x00000000 vbr=0x00000000
sgr=0x00000000 dbr=0x00000000 delayed_pc=0x00000000 fpul=0x00000000
r0=0x00000000 r1=0x00000000 r2=0x00000000 r3=0x00000000
r4=0x00000000 r5=0x00000000 r6=0x00000000 r7=0x00000000
r8=0x00000000 r9=0x00000000 r10=0x00000000 r11=0x00000000
r12=0x00000000 r13=0x00000000 r14=0x00000000 r15=0x00000000
r16=0x00000000 r17=0x00000000 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000
However I still don't understand how the delayed branch ends up at
0x8c800964 instead of 0x8c801528 above. Is this ouput not showing some
already translated TBs even with -singlestep -d in_asm,cpu,nochain and
that's why I see those cpu dumps without instructions? What's the correct
way to get a trace of all executed instructions?
Regards,
BALATON Zoltan
- Commit abb0cd93494 breaks -singlestep -d in_asm,cpu with qemu-system-sh4,
BALATON Zoltan <=