Unable to build x86 hosted debugger for ARM Linux, due to missing target
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.
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Scott Bambrough
parent
79bd78bef5
commit
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@ -1,3 +1,13 @@
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2000-04-05 Scott Bambrough <scottb@netwinder.org>
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* arm-linux-tdep.c: New file.
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* arm-linux-nat.c (fetch_fpregs): Remove unused code.
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(arm_get_longjmp_target): Moved it and all defines
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it uses to arm-linux-tdep.c.
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(arm_linux_extract_return_value): Moved to
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arm-linux-tdep.c.
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* config/arm/linux.mt: Add arm-linux-tdep.c to TDEPFILES.
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2000-04-04 Nick Duffek <nsd@cygnus.com>
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* infrun.c (handle_inferior_event): Call target_mourn_inferior
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@ -170,7 +170,6 @@ fetch_fpregs (void)
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for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
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{
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int fn = regno - F0_REGNUM;
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unsigned int *p = (unsigned int *) ®isters[REGISTER_BYTE (regno)];
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switch (fp.fType[fn])
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{
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@ -323,40 +322,6 @@ store_inferior_registers (int regno)
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store_fpregs ();
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}
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#ifdef GET_LONGJMP_TARGET
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/* Figure out where the longjmp will land. We expect that we have
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just entered longjmp and haven't yet altered r0, r1, so the
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arguments are still in the registers. (A1_REGNUM) points at the
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jmp_buf structure from which we extract the pc (JB_PC) that we will
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land at. The pc is copied into ADDR. This routine returns true on
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success. */
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#define LONGJMP_TARGET_SIZE sizeof(int)
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#define JB_ELEMENT_SIZE sizeof(int)
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#define JB_SL 18
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#define JB_FP 19
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#define JB_SP 20
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#define JB_PC 21
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int
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arm_get_longjmp_target (CORE_ADDR * pc)
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{
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CORE_ADDR jb_addr;
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char buf[LONGJMP_TARGET_SIZE];
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jb_addr = read_register (A1_REGNUM);
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if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
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LONGJMP_TARGET_SIZE))
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return 0;
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*pc = extract_address (buf, LONGJMP_TARGET_SIZE);
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return 1;
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}
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#endif /* GET_LONGJMP_TARGET */
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/*
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Dynamic Linking on ARM Linux
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----------------------------
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@ -495,25 +460,6 @@ arm_linux_kernel_u_size (void)
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return (sizeof (struct user));
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}
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/* Extract from an array REGBUF containing the (raw) register state
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a function return value of type TYPE, and copy that, in virtual format,
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into VALBUF. */
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void
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arm_linux_extract_return_value (struct type *type,
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char regbuf[REGISTER_BYTES],
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char *valbuf)
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{
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/* ScottB: This needs to be looked at to handle the different
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floating point emulators on ARM Linux. Right now the code
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assumes that fetch inferior registers does the right thing for
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GDB. I suspect this won't handle NWFPE registers correctly, nor
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will the default ARM version (arm_extract_return_value()). */
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int regnum = (TYPE_CODE_FLT == TYPE_CODE (type)) ? F0_REGNUM : A1_REGNUM;
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memcpy (valbuf, ®buf[REGISTER_BYTE (regnum)], TYPE_LENGTH (type));
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}
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static unsigned int
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get_linux_version (unsigned int *vmajor,
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unsigned int *vminor,
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81
gdb/arm-linux-tdep.c
Normal file
81
gdb/arm-linux-tdep.c
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@ -0,0 +1,81 @@
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/* GNU/Linux on ARM target support.
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Copyright 1999, 2000 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#ifdef GET_LONGJMP_TARGET
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/* Figure out where the longjmp will land. We expect that we have
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just entered longjmp and haven't yet altered r0, r1, so the
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arguments are still in the registers. (A1_REGNUM) points at the
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jmp_buf structure from which we extract the pc (JB_PC) that we will
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land at. The pc is copied into ADDR. This routine returns true on
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success. */
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#define LONGJMP_TARGET_SIZE sizeof(int)
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#define JB_ELEMENT_SIZE sizeof(int)
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#define JB_SL 18
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#define JB_FP 19
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#define JB_SP 20
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#define JB_PC 21
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int
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arm_get_longjmp_target (CORE_ADDR * pc)
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{
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CORE_ADDR jb_addr;
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char buf[LONGJMP_TARGET_SIZE];
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jb_addr = read_register (A1_REGNUM);
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if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
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LONGJMP_TARGET_SIZE))
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return 0;
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*pc = extract_address (buf, LONGJMP_TARGET_SIZE);
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return 1;
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}
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#endif /* GET_LONGJMP_TARGET */
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/* Extract from an array REGBUF containing the (raw) register state
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a function return value of type TYPE, and copy that, in virtual format,
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into VALBUF. */
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void
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arm_linux_extract_return_value (struct type *type,
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char regbuf[REGISTER_BYTES],
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char *valbuf)
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{
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/* ScottB: This needs to be looked at to handle the different
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floating point emulators on ARM Linux. Right now the code
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assumes that fetch inferior registers does the right thing for
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GDB. I suspect this won't handle NWFPE registers correctly, nor
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will the default ARM version (arm_extract_return_value()). */
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int regnum = (TYPE_CODE_FLT == TYPE_CODE (type)) ? F0_REGNUM : A1_REGNUM;
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memcpy (valbuf, ®buf[REGISTER_BYTE (regnum)], TYPE_LENGTH (type));
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}
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void
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_initialize_arm_linux_tdep (void)
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{
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}
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@ -1,5 +1,5 @@
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# Target: ARM based machine running GNU/Linux
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TM_FILE= tm-linux.h
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TDEPFILES= arm-tdep.o
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TDEPFILES= arm-tdep.o arm-linux-tdep.o
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GDBSERVER_DEPFILES= low-linux.o
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