1 from pygdbmi
.gdbcontroller
import GdbController
4 launch_args
= ['qemu-system-ppc64',
5 '-machine', 'powernv9',
11 def __init__(self
, kernel
):
12 args
= launch_args
+ ['-kernel', kernel
]
13 self
.qemu_popen
= subprocess
.Popen(args
,
14 stdout
=subprocess
.PIPE
,
15 stdin
=subprocess
.PIPE
)
16 self
.gdb
= GdbController(gdb_path
='powerpc64-linux-gnu-gdb')
21 def __exit__(self
, type, value
, traceback
):
25 return self
.gdb
.write('-target-select remote localhost:1234')
27 def break_address(self
, addr
):
28 cmd
= '-break-insert *0x{:x}'.format(addr
)
29 return self
.gdb
.write(cmd
)
31 def delete_breakpoint(self
, breakpoint
=None):
34 breakstring
= f
' {breakpoint}'
35 return self
.gdb
.write('-break-delete' + breakstring
)
37 def set_byte(self
, addr
, v
):
38 print ("qemu set byte", hex(addr
), hex(v
))
39 faddr
= '&{int}0x%x' % addr
40 res
= self
.gdb
.write('-data-write-memory-bytes %s "%02x"' % (faddr
, v
))
41 print ("confirm", self
.get_mem(addr
, 1))
43 def get_mem(self
, addr
, nbytes
):
44 res
= self
.gdb
.write("-data-read-memory %d u 1 1 %d" % (addr
, 8*nbytes
))
45 #print ("get_mem", res)
47 if(x
["type"]=="result"):
48 l
= list(map(int, x
['payload']['memory'][0]['data']))
50 for j
in range(0, len(l
), 8):
52 for i
, v
in enumerate(l
[j
:j
+8]):
58 def get_registers(self
):
59 return self
.gdb
.write('-data-list-register-values x')
61 def _get_register(self
, fmt
):
62 res
= self
.gdb
.write('-data-list-register-values '+fmt
,
63 timeout_sec
=1.0) # increase this timeout if needed
65 if(x
["type"]=="result"):
66 assert 'register-values' in x
['payload']
67 return int(x
['payload']['register-values'][0]['value'], 0)
70 # TODO: use -data-list-register-names instead of hardcoding the values
71 def get_pc(self
): return self
._get
_register
('x 64')
72 def get_msr(self
): return self
._get
_register
('x 65')
73 def get_cr(self
): return self
._get
_register
('x 66')
74 def get_lr(self
): return self
._get
_register
('x 67')
75 def get_ctr(self
): return self
._get
_register
('x 68') # probably
76 def get_xer(self
): return self
._get
_register
('x 69')
77 def get_fpscr(self
): return self
._get
_register
('x 70')
78 def get_mq(self
): return self
._get
_register
('x 71')
79 def get_register(self
, num
):
80 return self
._get
_register
('x {}'.format(num
))
83 return self
.gdb
.write('-exec-next-instruction')
85 def gdb_continue(self
):
86 return self
.gdb
.write('-exec-continue')
88 def gdb_eval(self
, expr
):
89 return self
.gdb
.write(f
'-data-evaluate-expression {expr}')
93 self
.qemu_popen
.kill()
94 outs
, errs
= self
.qemu_popen
.communicate()
95 self
.qemu_popen
.stdout
.close()
96 self
.qemu_popen
.stdin
.close()
99 def run_program(program
, initial_mem
=None):
100 q
= QemuController(program
.binfile
.name
)
102 # Run to the start of the program
103 q
.break_address(0x20000000)
105 for addr
, (v
, wid
) in initial_mem
.items():
107 q
.set_byte(addr
+i
, (v
>>i
*8) & 0xff)
109 # set the CR to 0, matching the simulator
111 # delete the previous breakpoint so loops don't screw things up
112 q
.delete_breakpoint()
114 q
.break_address(0x20000000 + program
.size())
116 q
.break_address(0x700)
121 if __name__
== '__main__':
122 q
= QemuController("qemu_test/kernel.bin")
124 q
.break_address(0x20000000)
126 print(q
.get_register(1))
128 print(q
.get_register(1))