aboutsummaryrefslogtreecommitdiff
path: root/gdb/arm-tdep.c
diff options
context:
space:
mode:
authorSteve Chamberlain <sac@cygnus>1995-05-24 23:56:24 +0000
committerSteve Chamberlain <sac@cygnus>1995-05-24 23:56:24 +0000
commit54af8e6e7bc98d625c39796a55b82393572595d6 (patch)
tree502197f9e92be8e32d4503eb26d0305616081e77 /gdb/arm-tdep.c
parent4cea100d33f39a57c5e9f72270c453f4bf92ca2e (diff)
downloadgdb-54af8e6e7bc98d625c39796a55b82393572595d6.zip
gdb-54af8e6e7bc98d625c39796a55b82393572595d6.tar.gz
gdb-54af8e6e7bc98d625c39796a55b82393572595d6.tar.bz2
Wed May 24 15:49:47 1995 Steve Chamberlain <sac@slash.cygnus.com>
* arm-tdep.c (convert_from_extended, convert_to_extended): New. * coffread.c (enter_linenos): Return if linetab 0. * config/arm/arm.mt (TDEPFILES): Add simulator support. * config/arm/tm-arm.h (FRAME_FIND_SAVED_REGS): Fix prototypes.
Diffstat (limited to 'gdb/arm-tdep.c')
-rw-r--r--gdb/arm-tdep.c108
1 files changed, 95 insertions, 13 deletions
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index b4fe1b5..1a8b027 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -1,28 +1,28 @@
-/* Copyright (C) 1988, 1989 Free Software Foundation, Inc.
+/* Target-dependent code for the Acorn Risc Machine, for GDB, the GNU Debugger.
+ Copyright 1988, 1989, 1991, 1992, 1993, 1995 Free Software Foundation, Inc.
This file is part of GDB.
-GDB is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-GDB is distributed in the hope that it will be useful,
+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 GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "defs.h"
-#include "param.h"
#include "frame.h"
#include "inferior.h"
-#include "arm-opcode.h"
-#include <stdio.h>
+#if 0
+#include "gdbcore.h"
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>
@@ -33,14 +33,15 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#define N_TXTADDR(hdr) 0x8000
#define N_DATADDR(hdr) (hdr.a_text + 0x8000)
-#include "gdbcore.h"
#include <sys/user.h> /* After a.out.h */
#include <sys/file.h>
#include <sys/stat.h>
#include <errno.h>
+#endif
+#if 0
/* Work with core dump and executable files, for GDB.
This code would be in core.c if it weren't machine-dependent. */
@@ -157,7 +158,9 @@ exec_file_command (filename, from_tty)
if (exec_file_display_hook)
(*exec_file_display_hook) (filename);
}
+#endif
+#if 0
/* Read from the program's memory (except for inferior processes).
This function is misnamed, since it only reads, never writes; and
since it will use the core file and/or executable file as necessary.
@@ -309,7 +312,7 @@ xfer_core_file (memaddr, myaddr, len)
Actually, we never right. */
else
{
- bzero (myaddr, i);
+ memset (myaddr, '\0', i);
returnval = EIO;
}
@@ -319,6 +322,7 @@ xfer_core_file (memaddr, myaddr, len)
}
return returnval;
}
+#endif
/* APCS (ARM procedure call standard) defines the following prologue:
@@ -336,8 +340,9 @@ CORE_ADDR
skip_prologue(pc)
CORE_ADDR pc;
{
- union insn_fmt op;
CORE_ADDR skip_pc = pc;
+#if 0
+ union insn_fmt op;
op.ins = read_memory_integer(skip_pc, 4);
/* look for the "mov ip,sp" */
@@ -374,9 +379,58 @@ CORE_ADDR pc;
op.arith.opcode != OPCODE_SUB ||
op.arith.dest != FP ||
op.arith.operand1 != SPTEMP) return pc;
+#endif
return skip_pc + 4;
}
+void
+arm_frame_find_saved_regs (frame_info, saved_regs_addr)
+ struct frame_info *frame_info;
+ struct frame_saved_regs *saved_regs_addr;
+{
+ register int regnum;
+ register int frame;
+ register int next_addr;
+ register int return_data_save;
+ register int saved_register_mask;
+
+ memset (saved_regs_addr, '\0', sizeof (*saved_regs_addr));
+ frame = frame_info->frame;
+ return_data_save = read_memory_integer (frame, 4) & 0x03fffffc - 12;
+ saved_register_mask = read_memory_integer (return_data_save, 4);
+ next_addr = frame - 12;
+ for (regnum = 4; regnum < 10; regnum++)
+ if (saved_register_mask & (1 << regnum))
+ {
+ next_addr -= 4;
+ saved_regs_addr->regs[regnum] = next_addr;
+ }
+ if (read_memory_integer (return_data_save + 4, 4) == 0xed6d7103)
+ {
+ next_addr -= 12;
+ saved_regs_addr->regs[F0_REGNUM + 7] = next_addr;
+ }
+ if (read_memory_integer (return_data_save + 8, 4) == 0xed6d6103)
+ {
+ next_addr -= 12;
+ saved_regs_addr->regs[F0_REGNUM + 6] = next_addr;
+ }
+ if (read_memory_integer (return_data_save + 12, 4) == 0xed6d5103)
+ {
+ next_addr -= 12;
+ saved_regs_addr->regs[F0_REGNUM + 5] = next_addr;
+ }
+ if (read_memory_integer(return_data_save + 16, 4) == 0xed6d4103)
+ {
+ next_addr -= 12;
+ saved_regs_addr->regs[F0_REGNUM + 4] = next_addr;
+ }
+ saved_regs_addr->regs[SP_REGNUM] = next_addr;
+ saved_regs_addr->regs[PC_REGNUM] = frame - 4;
+ saved_regs_addr->regs[PS_REGNUM] = frame - 4;
+ saved_regs_addr->regs[FP_REGNUM] = frame - 12;
+}
+
static void
print_fpu_flags(flags)
int flags;
@@ -404,3 +458,31 @@ arm_float_info()
fputs("flags: ", stdout);
print_fpu_flags(status);
}
+
+void
+_initialize_arm_tdep ()
+{
+ tm_print_insn = print_insn_arm;
+}
+
+
+/* FIXME: Fill in with the 'right thing', see asm
+ template in arm-convert.s */
+
+void
+convert_from_extended (ptr, dbl)
+void *ptr;
+double *dbl;
+{
+ *dbl = *(double*)ptr;
+}
+
+
+void
+convert_to_extended (dbl, ptr)
+void *ptr;
+double *dbl;
+{
+ *(double*)ptr = *dbl;
+}
+