mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-25 13:09:48 +00:00
faf5f7ad8a
dependencies. Created ARM Linux specific arm-linux-tdep.c file and moved missing code into it from arm-linux-nat.c. 2000-04-05 Scott Bambrough <scottb@netwinder.org> * arm-linux-tdep.c: New file. * arm-linux-nat.c (fetch_fpregs): Remove unused code. (arm_get_longjmp_target): Moved it and all defines it uses to arm-linux-tdep.c. (arm_linux_extract_return_value): Moved to arm-linux-tdep.c. * config/arm/linux.mt: Add arm-linux-tdep.c to TDEPFILES.
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* GNU/Linux on ARM target support.
|
|
Copyright 1999, 2000 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 "defs.h"
|
|
#include "symtab.h"
|
|
#include "gdbtypes.h"
|
|
|
|
#ifdef GET_LONGJMP_TARGET
|
|
|
|
/* Figure out where the longjmp will land. We expect that we have
|
|
just entered longjmp and haven't yet altered r0, r1, so the
|
|
arguments are still in the registers. (A1_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. */
|
|
|
|
#define LONGJMP_TARGET_SIZE sizeof(int)
|
|
#define JB_ELEMENT_SIZE sizeof(int)
|
|
#define JB_SL 18
|
|
#define JB_FP 19
|
|
#define JB_SP 20
|
|
#define JB_PC 21
|
|
|
|
int
|
|
arm_get_longjmp_target (CORE_ADDR * pc)
|
|
{
|
|
CORE_ADDR jb_addr;
|
|
char buf[LONGJMP_TARGET_SIZE];
|
|
|
|
jb_addr = read_register (A1_REGNUM);
|
|
|
|
if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
|
|
LONGJMP_TARGET_SIZE))
|
|
return 0;
|
|
|
|
*pc = extract_address (buf, LONGJMP_TARGET_SIZE);
|
|
return 1;
|
|
}
|
|
|
|
#endif /* GET_LONGJMP_TARGET */
|
|
|
|
/* Extract from an array REGBUF containing the (raw) register state
|
|
a function return value of type TYPE, and copy that, in virtual format,
|
|
into VALBUF. */
|
|
|
|
void
|
|
arm_linux_extract_return_value (struct type *type,
|
|
char regbuf[REGISTER_BYTES],
|
|
char *valbuf)
|
|
{
|
|
/* ScottB: This needs to be looked at to handle the different
|
|
floating point emulators on ARM Linux. Right now the code
|
|
assumes that fetch inferior registers does the right thing for
|
|
GDB. I suspect this won't handle NWFPE registers correctly, nor
|
|
will the default ARM version (arm_extract_return_value()). */
|
|
|
|
int regnum = (TYPE_CODE_FLT == TYPE_CODE (type)) ? F0_REGNUM : A1_REGNUM;
|
|
memcpy (valbuf, ®buf[REGISTER_BYTE (regnum)], TYPE_LENGTH (type));
|
|
}
|
|
|
|
void
|
|
_initialize_arm_linux_tdep (void)
|
|
{
|
|
}
|