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qemu/target/riscv
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Kevin Wolf e7cff9c68d hmp: Pass monitor to mon_get_cpu_env() 
mon_get_cpu_env() is indirectly called monitor_parse_arguments() where
the current monitor isn't set yet. Instead of using monitor_cur_env(),
explicitly pass the Monitor pointer to the function.

Without this fix, an HMP command like "x $pc" crashes like this:

  #0  0x0000555555caa01f in mon_get_cpu_sync (mon=0x0, synchronize=true) at ../monitor/misc.c:270
  #1  0x0000555555caa141 in mon_get_cpu (mon=0x0) at ../monitor/misc.c:294
  #2  0x0000555555caa158 in mon_get_cpu_env () at ../monitor/misc.c:299
  #3  0x0000555555b19739 in monitor_get_pc (mon=0x555556ad2de0, md=0x5555565d2d40 <monitor_defs+1152>, val=0) at ../target/i386/monitor.c:607
  #4  0x0000555555cadbec in get_monitor_def (mon=0x555556ad2de0, pval=0x7fffffffc208, name=0x7fffffffc220 "pc") at ../monitor/misc.c:1681
  #5  0x000055555582ec4f in expr_unary (mon=0x555556ad2de0) at ../monitor/hmp.c:387
  #6  0x000055555582edbb in expr_prod (mon=0x555556ad2de0) at ../monitor/hmp.c:421
  #7  0x000055555582ee79 in expr_logic (mon=0x555556ad2de0) at ../monitor/hmp.c:455
  #8  0x000055555582eefe in expr_sum (mon=0x555556ad2de0) at ../monitor/hmp.c:484
  #9  0x000055555582efe8 in get_expr (mon=0x555556ad2de0, pval=0x7fffffffc418, pp=0x7fffffffc408) at ../monitor/hmp.c:511
  #10 0x000055555582fcd4 in monitor_parse_arguments (mon=0x555556ad2de0, endp=0x7fffffffc890, cmd=0x555556675b50 <hmp_cmds+7920>) at ../monitor/hmp.c:876
  #11 0x00005555558306a8 in handle_hmp_command (mon=0x555556ad2de0, cmdline=0x555556ada452 "$pc") at ../monitor/hmp.c:1087
  #12 0x000055555582df14 in monitor_command_cb (opaque=0x555556ad2de0, cmdline=0x555556ada450 "x $pc", readline_opaque=0x0) at ../monitor/hmp.c:47

After this fix, nothing is left in monitor_parse_arguments() that can
indirectly call monitor_cur(), so the fix is complete.

Fixes: ff04108a0e
Reported-by: lichun <lichun@ruijie.com.cn>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201113114326.97663-4-kwolf@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-11-13 12:45:51 +00:00
..
insn_trans target/riscv: Split the Hypervisor execute load helpers 2020-11-09 15:09:00 -08:00
cpu_bits.h target/riscv: Remove the HS_TWO_STAGE flag 2020-11-09 15:08:53 -08:00
cpu_helper.c target/riscv: Remove the HS_TWO_STAGE flag 2020-11-09 15:08:53 -08:00
cpu_user.h Supply missing header guards 2019-06-12 13:20:21 +02:00
cpu-param.h target/riscv: Add a virtualised MMU Mode 2020-11-09 15:08:45 -08:00
cpu.c target/riscv: Add basic vmstate description of CPU 2020-11-03 07:17:23 -08:00
cpu.h target/riscv: Remove the hyp load and store functions 2020-11-09 15:08:57 -08:00
csr.c target/riscv/csr.c : add space before the open parenthesis '(' 2020-11-03 07:17:23 -08:00
fpu_helper.c target/riscv: Check nanboxed inputs to fp helpers 2020-08-21 22:37:55 -07:00
gdbstub.c gdbstub: extend GByteArray to read register helpers 2020-03-17 17:38:38 +00:00
helper.h target/riscv: Split the Hypervisor execute load helpers 2020-11-09 15:09:00 -08:00
insn16-32.decode target/riscv: Split RVC32 and RVC64 insns into separate files 2019-05-24 12:09:22 -07:00
insn16-64.decode target/riscv: Add checks for several RVC reserved operands 2019-05-24 12:09:25 -07:00
insn16.decode target/riscv: Add checks for several RVC reserved operands 2019-05-24 12:09:25 -07:00
insn32-64.decode target/riscv: Allow generating hlv/hlvx/hsv instructions 2020-08-25 09:11:35 -07:00
insn32.decode target/riscv: Allow generating hlv/hlvx/hsv instructions 2020-08-25 09:11:35 -07:00
instmap.h target/riscv: progressively load the instruction during decode 2020-02-25 20:20:23 +00:00
internals.h target/riscv: Add basic vmstate description of CPU 2020-11-03 07:17:23 -08:00
machine.c target/riscv: Add V extension state description 2020-11-03 07:17:23 -08:00
meson.build target/riscv: Add basic vmstate description of CPU 2020-11-03 07:17:23 -08:00
monitor.c hmp: Pass monitor to mon_get_cpu_env() 2020-11-13 12:45:51 +00:00
op_helper.c target/riscv: Split the Hypervisor execute load helpers 2020-11-09 15:09:00 -08:00
pmp.c target/riscv: Add PMP state description 2020-11-03 07:17:23 -08:00
pmp.h target/riscv: Add PMP state description 2020-11-03 07:17:23 -08:00
trace-events trace-events: Fix attribution of trace points to source 2020-09-09 17:17:58 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
translate.c target/riscv: Remove the hyp load and store functions 2020-11-09 15:08:57 -08:00
vector_helper.c softfloat: Implement the full set of comparisons for float16 2020-08-28 10:48:07 -07:00