[lldb-dev] How can lldb debug a remote bare-metal platform?

[cui bixiong via lldb-dev]

Hi：

    Currently I porting lldb for Hifive1 (riscv bare board) w/ openocd
0.10.0, but it always show "error: Process must be launched."

    I use GNU gdb to remote connect and debugging w/ the same openocd +
elf, it work OK.

    I want to know how to launch Process in bare board?

    thanks a lot!

$ lldb
(lldb) log enable gdb-remote packets
(lldb) target create Build3/riscv-hello.elf
Current executable set to 'Build3/riscv-hello.elf' (riscv).
(lldb) gdb-remote 172.27.113.29:3333
<   1> send ack packet: +
history[1] tid=0x44c8 <   1> send packet: +
<   1> read packet: +
<  19> send SendPacketNoLock 2 packet: $QStartNoAckMode#b0
<   1> read packet: +
<   6> read packet: $OK#9a
<   1> send ack packet: +
<  41> send SendPacketNoLock 2 packet: $qSupported:xmlRegisters=i386,
arm,mips#12
<  80> read packet: $PacketSize=3fff;qXfer:memory-
map:read+;qXfer:features:read-;QStartNoAckMode+#08
<  26> send SendPacketNoLock 2 packet: $QThreadSuffixSupported#e4
<   4> read packet: $#00
<  27> send SendPacketNoLock 2 packet: $QListThreadsInStopReply#21
<   4> read packet: $#00
<  13> send SendPacketNoLock 2 packet: $qHostInfo#9b
<   4> read packet: $#00
<  10> send SendPacketNoLock 2 packet: $vCont?#49
<   4> read packet: $#00
<  27> send SendPacketNoLock 2 packet: $qVAttachOrWaitSupported#38
<   4> read packet: $#00
<  16> send SendPacketNoLock 2 packet: $qProcessInfo#dc
<   4> read packet: $#00
<   6> send SendPacketNoLock 2 packet: $qC#b4
<   7> read packet: $QC0#c4
<  16> send SendPacketNoLock 2 packet: $qfThreadInfo#bb
<   5> read packet: $l#6c
(lldb) thread list
error: Process must be launched.
(lldb) b main
Breakpoint 1: where = riscv-hello.elf`main at hello.c:3, address =
0x20400230
(lldb) thread continue
error: invalid thread
(lldb) process launch
<  38> send SendPacketNoLock 2 packet: $QSetSTDIN:
2f6465762f7074732f343238#b6
<   4> read packet: $#00
<  39> send SendPacketNoLock 2 packet: $QSetSTDOUT:
2f6465762f7074732f343238#17
<   4> read packet: $#00
<  39> send SendPacketNoLock 2 packet: $QSetSTDERR:
2f6465762f7074732f343238#08
<   4> read packet: $#00
<  21> send SendPacketNoLock 2 packet: $QSetDisableASLR:1#ce
<   4> read packet: $#00
<  23> send SendPacketNoLock 2 packet: $QSetDetachOnError:1#f8
<   4> read packet: $#00
<  21> send SendPacketNoLock 2 packet: $QLaunchArch:riscv#8b
<   4> read packet: $#00
<  33> send SendPacketNoLock 2 packet: $QEnvironment:BINARY_TYPE_HPC=#fd
<   4> read packet: $#00
< 115> send SendPacketNoLock 2 packet: $A104,0,
2f70726f6a2f6d746b31333836372f727369632d762f74657374696e672f
4275696c64332f72697363762d68656c6c6f2e656c66#6c
<   4> read packet: $#00
error: process launch failed: 'A' packet returned an error: -1



Best Regards
--cuibixiong
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