1 /* Target machine definitions for GDB for an embedded SPARC.
2 Copyright 1996, 1997, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 #define TARGET_SPARCLET 1 /* Still needed for non-multi-arch case */
23 #include "sparc/tm-sparc.h"
25 /* Note: we are not defining GDB_MULTI_ARCH for the sparclet target
26 at this time, because we have not figured out how to detect the
27 sparclet target from the bfd structure. */
29 /* Sparclet regs, for debugging purposes. */
41 /* Select the sparclet disassembler. Slightly different instruction set from
44 #undef TM_PRINT_INSN_MACH
45 #define TM_PRINT_INSN_MACH bfd_mach_sparc_sparclet
47 /* overrides of tm-sparc.h */
49 #undef TARGET_BYTE_ORDER
50 #define TARGET_BYTE_ORDER_SELECTABLE
52 /* Sequence of bytes for breakpoint instruction (ta 1). */
54 #define BIG_BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
55 #define LITTLE_BREAKPOINT {0x01, 0x20, 0xd0, 0x91}
57 #if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
59 * The following defines must go away for MULTI_ARCH.
62 #undef NUM_REGS /* formerly "72" */
63 /* WIN FP CPU CCP ASR AWR APSR */
64 #define NUM_REGS (32 + 32 + 8 + 8 + 8/*+ 32 + 1*/)
66 #undef REGISTER_BYTES /* formerly "(32*4 + 32*4 + 8*4)" */
67 #define REGISTER_BYTES (32*4 + 32*4 + 8*4 + 8*4 + 8*4/* + 32*4 + 1*4*/)
69 /* Initializer for an array of names of registers.
70 There should be NUM_REGS strings in this initializer. */
71 /* Sparclet has no fp! */
72 /* Compiler maps types for floats by number, so can't
73 change the numbers here. */
76 #define REGISTER_NAMES \
77 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \
78 "o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7", \
79 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
80 "i0", "i1", "i2", "i3", "i4", "i5", "i6", "i7", \
82 "", "", "", "", "", "", "", "", /* no FPU regs */ \
83 "", "", "", "", "", "", "", "", \
84 "", "", "", "", "", "", "", "", \
85 "", "", "", "", "", "", "", "", \
87 "y", "psr", "wim", "tbr", "pc", "npc", "", "", \
89 "ccsr", "ccpr", "cccrcr", "ccor", "ccobr", "ccibr", "ccir", "", \
91 /* ASR15 ASR19 (don't display them) */ \
92 "asr1", "", "asr17", "asr18", "", "asr20", "asr21", "asr22", \
94 "awr0", "awr1", "awr2", "awr3", "awr4", "awr5", "awr6", "awr7", \
95 "awr8", "awr9", "awr10", "awr11", "awr12", "awr13", "awr14", "awr15", \
96 "awr16", "awr17", "awr18", "awr19", "awr20", "awr21", "awr22", "awr23", \
97 "awr24", "awr25", "awr26", "awr27", "awr28", "awr29", "awr30", "awr31", \
102 /* Remove FP dependant code which was defined in tm-sparc.h */
103 #undef FP0_REGNUM /* Floating point register 0 */
104 #undef FPS_REGNUM /* Floating point status register */
105 #undef CPS_REGNUM /* Coprocessor status register */
107 /* sparclet register numbers */
108 #define CCSR_REGNUM 72
110 #undef EXTRACT_RETURN_VALUE
111 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
114 (char *)(REGBUF) + REGISTER_RAW_SIZE (O0_REGNUM) * 8 + \
115 (TYPE_LENGTH(TYPE) >= REGISTER_RAW_SIZE (O0_REGNUM) \
116 ? 0 : REGISTER_RAW_SIZE (O0_REGNUM) - TYPE_LENGTH(TYPE)), \
117 TYPE_LENGTH(TYPE)); \
119 #undef STORE_RETURN_VALUE
120 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
122 /* Other values are returned in register %o0. */ \
123 write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF), \
124 TYPE_LENGTH (TYPE)); \
127 #endif /* GDB_MULTI_ARCH */
129 #undef PRINT_REGISTER_HOOK
130 #define PRINT_REGISTER_HOOK(regno)
132 /* Offsets into jmp_buf. Not defined by Sun, but at least documented in a
133 comment in <machine/setjmp.h>! */
135 #define JB_ELEMENT_SIZE 4 /* Size of each element in jmp_buf */
137 #define JB_ONSSTACK 0
147 /* Figure out where the longjmp will land. We expect that we have just entered
148 longjmp and haven't yet setup the stack frame, so the args are still in the
149 output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we
150 extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
151 This routine returns true on success */
153 extern int get_longjmp_target (CORE_ADDR
*);
155 #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
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