Public bug reported:
I'm getting core dumped when running the attached hello binary in qemu,
but when using Gdb to remote-debug the program, it exited normally. will
appreciate if you can help look into this qemu issue.
And I found that QEMU's 32-bit arm linux-user mode doesn't correctly
turn guest BKPT insns into SIGTRAP signal.
0xa602 <_start> movs r0, #22
0xa604 <_start+2> addw r1, pc, #186 ; 0xba
0xa608 <_start+6> bkpt 0x00ab
$readelf -h hello
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: ARM
Version: 0x1
Entry point address: 0xa603
Start of program headers: 52 (bytes into file)
Start of section headers: 144128 (bytes into file)
Flags: 0x5000200, Version5 EABI, soft-float ABI
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 5
Size of section headers: 40 (bytes)
Number of section headers: 16
Section header string table index: 14
$qemu-arm --version
qemu-arm version 6.2.0
Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers
And I have check that the bug(https://bugs.launchpad.net/qemu/+bug/1873898) is
fixed.
But it's coredump.
** Affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1967248
Title:
qemu: uncaught target signal 5 (Trace/breakpoint trap)
Status in QEMU:
New
Bug description:
I'm getting core dumped when running the attached hello binary in
qemu, but when using Gdb to remote-debug the program, it exited
normally. will appreciate if you can help look into this qemu issue.
And I found that QEMU's 32-bit arm linux-user mode doesn't correctly
turn guest BKPT insns into SIGTRAP signal.
0xa602 <_start> movs r0, #22
0xa604 <_start+2> addw r1, pc, #186 ; 0xba
0xa608 <_start+6> bkpt 0x00ab
$readelf -h hello
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: ARM
Version: 0x1
Entry point address: 0xa603
Start of program headers: 52 (bytes into file)
Start of section headers: 144128 (bytes into file)
Flags: 0x5000200, Version5 EABI, soft-float ABI
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 5
Size of section headers: 40 (bytes)
Number of section headers: 16
Section header string table index: 14
$qemu-arm --version
qemu-arm version 6.2.0
Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers
And I have check that the bug(https://bugs.launchpad.net/qemu/+bug/1873898)
is fixed.
But it's coredump.
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