1 /* GNU/Linux/BFIN specific low level interface, for the remote server for GDB.
3 Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 Contributed by Analog Devices, Inc.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "linux-low.h"
25 #include "libiberty.h"
26 #include <asm/ptrace.h>
28 /* Defined in auto-generated file reg-bfin.c. */
29 void init_registers_bfin (void);
31 static int bfin_regmap
[] =
33 PT_R0
, PT_R1
, PT_R2
, PT_R3
, PT_R4
, PT_R5
, PT_R6
, PT_R7
,
34 PT_P0
, PT_P1
, PT_P2
, PT_P3
, PT_P4
, PT_P5
, PT_USP
, PT_FP
,
35 PT_I0
, PT_I1
, PT_I2
, PT_I3
, PT_M0
, PT_M1
, PT_M2
, PT_M3
,
36 PT_B0
, PT_B1
, PT_B2
, PT_B3
, PT_L0
, PT_L1
, PT_L2
, PT_L3
,
37 PT_A0X
, PT_A0W
, PT_A1X
, PT_A1W
, PT_ASTAT
, PT_RETS
,
38 PT_LC0
, PT_LT0
, PT_LB0
, PT_LC1
, PT_LT1
, PT_LB1
,
39 -1 /* PT_CYCLES */, -1 /* PT_CYCLES2 */,
40 -1 /* PT_USP */, PT_SEQSTAT
, PT_SYSCFG
, PT_PC
, PT_RETX
, PT_RETN
, PT_RETE
,
44 #define bfin_num_regs ARRAY_SIZE (bfin_regmap)
47 bfin_cannot_store_register (int regno
)
49 return (regno
>= bfin_num_regs
);
53 bfin_cannot_fetch_register (int regno
)
55 return (regno
>= bfin_num_regs
);
59 bfin_get_pc (struct regcache
*regcache
)
63 collect_register_by_name (regcache
, "pc", &pc
);
69 bfin_set_pc (struct regcache
*regcache
, CORE_ADDR pc
)
71 unsigned long newpc
= pc
;
73 supply_register_by_name (regcache
, "pc", &newpc
);
76 #define bfin_breakpoint_len 2
77 static const unsigned char bfin_breakpoint
[bfin_breakpoint_len
] = {0xa1, 0x00};
80 bfin_breakpoint_at (CORE_ADDR where
)
82 unsigned char insn
[bfin_breakpoint_len
];
84 read_inferior_memory(where
, insn
, bfin_breakpoint_len
);
85 if (insn
[0] == bfin_breakpoint
[0]
86 && insn
[1] == bfin_breakpoint
[1])
89 /* If necessary, recognize more trap instructions here. GDB only uses the
94 struct linux_target_ops the_low_target
= {
98 bfin_cannot_fetch_register
,
99 bfin_cannot_store_register
,