d0e5107749
(TARGET_BYTE_ORDER_SELECTABLE): Define.
(BREAKPOINT): Undef.
({BIG,LITTLE}_BREAKPOINT): Define.
110 lines
4.1 KiB
C
110 lines
4.1 KiB
C
/* Target machine definitions for GDB for an embedded SPARC.
|
|
Copyright 1996 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#include "sparc/tm-sparc.h"
|
|
|
|
#define TARGET_SPARCLET 1
|
|
|
|
/* overrides of tm-sparc.h */
|
|
|
|
#undef TARGET_BYTE_ORDER
|
|
#define TARGET_BYTE_ORDER_SELECTABLE
|
|
|
|
/* Sequence of bytes for breakpoint instruction (ta 1). */
|
|
#undef BREAKPOINT
|
|
#define BIG_BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
|
|
#define LITTLE_BREAKPOINT {0x01, 0x20, 0xd0, 0x91}
|
|
|
|
/* Initializer for an array of names of registers.
|
|
There should be NUM_REGS strings in this initializer. */
|
|
/* Sparclet has no fp! */
|
|
/* Compiler maps types for floats by number, so can't
|
|
change the numbers here. */
|
|
|
|
#undef REGISTER_NAMES
|
|
/* g0 removed - Sparclet returns error if attempt to access. */
|
|
/* psr removed - Sparclet does not return ": " in response,
|
|
the monitor is therefore unable to get the expected response delimiter,
|
|
causing a timeout. */
|
|
#define REGISTER_NAMES \
|
|
{ "", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \
|
|
"o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7", \
|
|
"l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
|
|
"i0", "i1", "i2", "i3", "i4", "i5", "i6", "i7", \
|
|
\
|
|
0, 0, 0, 0, 0, 0, 0, 0, \
|
|
0, 0, 0, 0, 0, 0, 0, 0, \
|
|
0, 0, 0, 0, 0, 0, 0, 0, \
|
|
0, 0, 0, 0, 0, 0, 0, 0, \
|
|
\
|
|
"y", 0, "wim", "tbr", "pc", "npc", 0, 0 }
|
|
|
|
/* Remove FP dependant code which was defined in tm-sparc.h */
|
|
#undef FP0_REGNUM /* Floating point register 0 */
|
|
#undef FPS_REGNUM /* Floating point status register */
|
|
#undef CPS_REGNUM /* Coprocessor status register */
|
|
|
|
#undef EXTRACT_RETURN_VALUE
|
|
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
|
|
{ \
|
|
memcpy ((VALBUF), \
|
|
(char *)(REGBUF) + REGISTER_RAW_SIZE (O0_REGNUM) * 8 + \
|
|
(TYPE_LENGTH(TYPE) >= REGISTER_RAW_SIZE (O0_REGNUM) \
|
|
? 0 : REGISTER_RAW_SIZE (O0_REGNUM) - TYPE_LENGTH(TYPE)), \
|
|
TYPE_LENGTH(TYPE)); \
|
|
}
|
|
#undef STORE_RETURN_VALUE
|
|
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
|
{ \
|
|
/* Other values are returned in register %o0. */ \
|
|
write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF), \
|
|
TYPE_LENGTH (TYPE)); \
|
|
}
|
|
#undef PRINT_REGISTER_HOOK
|
|
#define PRINT_REGISTER_HOOK(regno)
|
|
|
|
/* Override the standard gdb prompt when compiled for this target. */
|
|
|
|
#define DEFAULT_PROMPT "(gdbslet) "
|
|
|
|
/* Offsets into jmp_buf. Not defined by Sun, but at least documented in a
|
|
comment in <machine/setjmp.h>! */
|
|
|
|
#define JB_ELEMENT_SIZE 4 /* Size of each element in jmp_buf */
|
|
|
|
#define JB_ONSSTACK 0
|
|
#define JB_SIGMASK 1
|
|
#define JB_SP 2
|
|
#define JB_PC 3
|
|
#define JB_NPC 4
|
|
#define JB_PSR 5
|
|
#define JB_G1 6
|
|
#define JB_O0 7
|
|
#define JB_WBCNT 8
|
|
|
|
/* Figure out where the longjmp will land. We expect that we have just entered
|
|
longjmp and haven't yet setup the stack frame, so the args are still in the
|
|
output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we
|
|
extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
|
|
This routine returns true on success */
|
|
|
|
extern int
|
|
get_longjmp_target PARAMS ((CORE_ADDR *));
|
|
|
|
#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
|