]>
git.proxmox.com Git - qemu.git/blob - target-ppc/gdbstub.c
2 * PowerPC gdb server stub
4 * Copyright (c) 2003-2005 Fabrice Bellard
5 * Copyright (c) 2013 SUSE LINUX Products GmbH
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 /* Old gdb always expects FP registers. Newer (xml-aware) gdb only
22 * expects whatever the target description contains. Due to a
23 * historical mishap the FP registers appear in between core integer
24 * regs and PC, MSR, CR, and so forth. We hack round this by giving the
25 * FP regs zero size when talking to a newer gdb.
28 static int cpu_gdb_read_register(CPUPPCState
*env
, uint8_t *mem_buf
, int n
)
32 return gdb_get_regl(mem_buf
, env
->gpr
[n
]);
38 stfq_p(mem_buf
, env
->fpr
[n
-32]);
43 return gdb_get_regl(mem_buf
, env
->nip
);
45 return gdb_get_regl(mem_buf
, env
->msr
);
50 for (i
= 0; i
< 8; i
++) {
51 cr
|= env
->crf
[i
] << (32 - ((i
+ 1) * 4));
53 return gdb_get_reg32(mem_buf
, cr
);
56 return gdb_get_regl(mem_buf
, env
->lr
);
58 return gdb_get_regl(mem_buf
, env
->ctr
);
60 return gdb_get_regl(mem_buf
, env
->xer
);
66 return gdb_get_reg32(mem_buf
, env
->fpscr
);
73 static int cpu_gdb_write_register(CPUPPCState
*env
, uint8_t *mem_buf
, int n
)
77 env
->gpr
[n
] = ldtul_p(mem_buf
);
78 return sizeof(target_ulong
);
84 env
->fpr
[n
-32] = ldfq_p(mem_buf
);
89 env
->nip
= ldtul_p(mem_buf
);
90 return sizeof(target_ulong
);
92 ppc_store_msr(env
, ldtul_p(mem_buf
));
93 return sizeof(target_ulong
);
96 uint32_t cr
= ldl_p(mem_buf
);
98 for (i
= 0; i
< 8; i
++) {
99 env
->crf
[i
] = (cr
>> (32 - ((i
+ 1) * 4))) & 0xF;
104 env
->lr
= ldtul_p(mem_buf
);
105 return sizeof(target_ulong
);
107 env
->ctr
= ldtul_p(mem_buf
);
108 return sizeof(target_ulong
);
110 env
->xer
= ldtul_p(mem_buf
);
111 return sizeof(target_ulong
);
117 store_fpscr(env
, ldtul_p(mem_buf
), 0xffffffff);
118 return sizeof(target_ulong
);