gdb/insight for ARCompact (from Richard Stuckey)arc-insight_6_8-branch

7 files changed, 164 insertions, 271 deletions

diff --git a/MANIFEST b/MANIFEST
deleted file mode 100644
index 1e876de3b..000000000
--- a/MANIFEST
+++ /dev/null
@@ -1,249 +0,0 @@
-By codito
- added files:
-  gas/testsuite/gas/arc/general_a700.d
-  gas/testsuite/gas/arc/dsp1.d
-  gas/testsuite/gas/arc/general_a700.s
-  gas/testsuite/gas/arc/dsp1.s
-  gas/testsuite/gas/arc/ld_arc700.s
-  gas/testsuite/gas/arc/sub_s.d
-  gas/testsuite/gas/arc/lsl_s.d
-  gas/testsuite/gas/arc/gen_simd.d
-  gas/testsuite/gas/arc/sub_s.s
-  gas/testsuite/gas/arc/lsl_s.s
-  gas/testsuite/gas/arc/prefetch.d
-  gas/testsuite/gas/arc/gen_simd.s
-  gas/testsuite/gas/arc/reloctest.d
-  gas/testsuite/gas/arc/arc700.exp
-  gas/testsuite/gas/arc/dsp2.d
-  gas/testsuite/gas/arc/prefetch.s
-  gas/testsuite/gas/arc/reloctest.s
-  gas/testsuite/gas/arc/dsp2.s
-  gas/testsuite/gas/arc/mpy_a700.d
-  gas/testsuite/gas/arc/ex_arc700.s
-  gas/testsuite/gas/arc/mpy_a700.s
-  gas/config/extlib
-  gas/config/extlib/configure
-  gas/config/extlib/Makefile.in
-  gas/config/extlib/arcsimd.s
-  gas/config/extlib/configure.in
-  gas/config/extlib/arcextlib.s
-  include/elf/ChangeLog.codito
-  libgloss/arc/syscall.h (delivered as linux/include/asm-arcnommu/unistd.h)
-  ld/emultempl/arclinux.em
-  ld/configdoc.texi
-  ld/scripttempl/elfarc.sc
-  ld/scripttempl/arclinux.sc
-  ld/emulparams/arclinux.sh
-  md5.sum
-  opcodes/ChangeLog.codito
-  opcodes/arcompact-dis.c
- changed files:
-  bfd/archures.c (merged)
-  bfd/bfd-in2.h (merged/regenerated)
-  bfd/config.bfd
-  bfd/configure.in
-  bfd/cpu-arc.c (merged)
-  bfd/elf32-arc.c
-  bfd/reloc.c
-  bfd/cpu-arc.c
-  Makefile.in
-  gas/configure.tgt (patch was originally in configure.in)
-  gas/doc/c-arc.texi
-  gas/doc/as.texinfo
-  gas/configure.in
-  gas/testsuite/gas/arc/swi.d
-  gas/testsuite/gas/arc/sbc.d
-  gas/testsuite/gas/arc/sleep.d
-  gas/testsuite/gas/arc/brk.d
-  gas/testsuite/gas/arc/swi.s
-  gas/testsuite/gas/arc/rrc.d
-  gas/testsuite/gas/arc/bic.d
-  gas/testsuite/gas/arc/extb.d
-  gas/testsuite/gas/arc/arc.exp
-  gas/testsuite/gas/arc/asl.d
-  gas/testsuite/gas/arc/asr.d
-  gas/testsuite/gas/arc/sexw.d
-  gas/testsuite/gas/arc/adc.d
-  gas/testsuite/gas/arc/lsr.d
-  gas/testsuite/gas/arc/mov.d
-  gas/testsuite/gas/arc/ror.d
-  gas/testsuite/gas/arc/and.d
-  gas/testsuite/gas/arc/xor.d
-  gas/testsuite/gas/arc/rlc.d
-  gas/testsuite/gas/arc/or.d
-  gas/testsuite/gas/arc/sexb.d
-  gas/testsuite/gas/arc/jl.d
-  gas/testsuite/gas/arc/extw.d
-  gas/testsuite/gas/arc/add.d
-  gas/testsuite/gas/arc/sub.d
-  gas/struc-symbol.h
-  gas/config/tc-arc.c
-  gas/config/tc-arc.h
-  gas/Makefile.am
-  include/dis-asm.h
-  include/elf/arc.h
-  include/elf/common.h (adapted)
-  include/opcode/arc.h
-  ld/configure.in
-  ld/emulparams/arcelf.sh
-  ld/configure.tgt
-  ld/Makefile.am
-  binutils/configure.in
-  binutils/testsuite/binutils-all/objdump.exp
-  binutils/readelf.c
-  opcodes/configure.in
-  opcodes/arc-dis.c
-  opcodes/arc-dis.h
-  opcodes/arc-opc.c
-  opcodes/Makefile.am
-  opcodes/arc-ext.c
-  opcodes/arc-ext.h
-  gdb/doc/Makefile.in
-  gdb/doc/gdb.texinfo
-  gdb/remote.c
-  gdb/testsuite/gdb.base/float.exp
-  gdb/testsuite/lib/gdbserver-support.exp
-  gdb/testsuite/gdb.asm/asm-source.exp
-  gdb/dwarf2read.c
-  gdb/dwarf2-frame.c
-  gdb/configure.tgt
-  gdb/version.in
-  gdb/gdbserver/Makefile.in
-  gdb/gdbserver/configure.srv
-  gdb/gdbserver/proc-service.c
-  gdb/gdbserver/remote-utils.c
-  gdb/Makefile.in
-
-By ARC employees:
- added files:
-  cgen/cpu/ARCompact.cpu
-  cgen/cpu/arc.opc
-  cgen/cpu/arc.cpu
-  cpu/arc.opc
-  cpu/sh-sim.cpu
-  cpu/arc.cpu
-  cpu/ARCompact.cpu
-  gas/ChangeLog.ARC
-  gdb/config/arc/arc.mt
-  include/gdb/target-io/arc.h
-  ld/ChangeLog.ARC
-  opcodes/arc-opc.h
-  opcodes/arc-opinst.c
-  opcodes/arc-desc.c
-  opcodes/arc-desc.h
-  opcodes/arc-ibld.c
-  opcodes/arc-asm.c
-  sim/arc/ChangeLog
-  sim/arc/configure.ac
-  sim/arc/mloop5.in
-  sim/arc/mloop6.in
-  sim/arc/mloop7.in
-  sim/arc/arc-sim.h
-  sim/arc/Makefile.in
-  sim/arc/tconfig.in
-  sim/arc/sim-main.h
-  sim/arc/devices.c
-  sim/arc/sim-if.c
-  sim/arc/arc5.c
-  sim/arc/arc6.c
-  sim/arc/arc7.c
-  sim/arc/config.in
-  sim/arc/configure
-  sim/arc/arch.h
-  sim/arc/arch.c
-  sim/arc/decode5.h
-  sim/arc/decode6.h
-  sim/arc/decode7.h
-  sim/arc/decode5.c
-  sim/arc/decode6.c
-  sim/arc/decode7.c
-  sim/arc/sem5-switch.c
-  sim/arc/sem6-switch.c
-  sim/arc/sem7-switch.c
-  sim/arc/sem5.c
-  sim/arc/sem6.c
-  sim/arc/sem7.c
-  sim/arc/cpu5.h
-  sim/arc/cpu6.h
-  sim/arc/cpu7.h
-  sim/arc/cpuall.h
-  sim/arc/cpu5.c
-  sim/arc/cpu6.c
-  sim/arc/cpu7.c
-  sim/arc/model5.c
-  sim/arc/model6.c
-  sim/arc/model7.c
-  sim/arc/traps.c
-  sim/common/ChangeLog.ARC
-  newlib/ChangeLog.ARC
-  newlib/libc/sys/arc/sys/fcntl.h
- replaced files:
-  opcodes/arc-dis.c
-  opcodes/arc-opc.c
- changed files:
-  bfd/configure
-  bfd/elf32-arc.c
-  bfd/libbfd.h
-  bfd/bfd-in2.h
-  cgen/ChangeLog
-  cgen/read.scm
-  cgen/sim-cpu.scm
-  cgen/utils-sim.scm
-  cgen/cpu/ip2k.opc
-  cgen/cpu/sparc.opc
-  cgen/cpu/xc16x.opc
-  cgen/cpu/fr30.opc
-  cgen/cpu/mep.opc
-  cgen/cpu/m32r.opc
-  cgen/cpu/i960.opc
-  cgen/cpu/sh.opc
-  cgen/cpu/iq2000.opc
-  cgen/cpu/openrisc.opc
-  cgen/cpu/xstormy16.opc
-  cgen/opc-itab.scm
-  cpu/ChangeLog
-  gas/config/tc-arc.c
-  gas/config/tc-arc.h
-  gas/configure
-  gas/Makefile.in
-  gas/doc/c-arc.texi
-  gas/as.c
-  gas/symbols.c
-  gas/symbols.h
-  gdb/ChangeLog
-  gdb/configure.tgt
-  include/ChangeLog
-  include/dis-asm.h
-  include/gdb/callback.h
-  include/gdb/ChangeLog
-  include/opcode/arc.h
-  include/opcode/cgen.h
-  ld/ChangeLog
-  ld/scripttempl/arclinux.sc
-  ld/scripttempl/elfarc.sc
-  ld/emulparams/arclinux.sh
-  ld/Makefile.am
-  ld/Makefile.in
-  libgloss/ChangeLog
-  opcodes/arc-dis.h
-  opcodes/arc-dis.c
-  opcodes/arc-ext.h
-  opcodes/arc-ext.c
-  opcodes/arc-opc.c
-  opcodes/ChangeLog
-  opcodes/configure
-  opcodes/configure.in
-  opcodes/Makefile.am
-  opcodes/Makefile.in
-  opcodes/cgen-dis.c
-  sim/ChangeLog
-  sim/configure.ac
-  sim/configure
-  sim/common/callback.c
-  sim/common/cgen-trace.c
-  sim/common/ChangeLog
-  sim/common/gennltvals.sh
-  sim/common/gentvals.sh
-  sim/common/nltvals.def
-  sim/common/sim-utils.c
-  sim/common/syscall.c
diff --git a/Makefile.in b/Makefile.in
index 027a03b6b..981ce54af 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -354,7 +354,6 @@ AR_FOR_TARGET=@AR_FOR_TARGET@
 AS_FOR_TARGET=@AS_FOR_TARGET@
 CC_FOR_TARGET=$(STAGE_CC_WRAPPER) @CC_FOR_TARGET@ $(FLAGS_FOR_TARGET)
 
-
 # If GCC_FOR_TARGET is not overriden on the command line, then this
 # variable is passed down to the gcc Makefile, where it is used to
 # build libgcc2.a.  We define it here so that it can itself be
diff --git a/README.arcgdb b/README.arcgdb
new file mode 100755
index 000000000..7710624e4
--- /dev/null
+++ b/README.arcgdb
@@ -0,0 +1,146 @@
+Building gdb
+============
+
+You can build ARC GDB in two possible ways: one for debugging linux applications,
+and one for debugging programs directly on the CPU using either the built-in simulator,
+or the xISS (a fast instruction set simulator), or a JTAG connection to a hardware target.
+
+
+arc-linux-uclibc-gdb
+--------------------
+
+You will need to build GDB as well as gdbserver.
+
+For building GDB, do
+   $ ./configure --target=arc-linux-uclibc --prefix=/install/path
+   $ make 
+   $ make install
+
+(Where /install/path is a path to a directory where you want to install GDB.)
+
+
+For building gdbserver:
+
+You will need the arc-linux-uclibc-gcc toolchain.  It should be in your path.
+
+   $ cd gdbserver
+   $ source ./build_gdbserver.sh
+   $ ./configure --host=i386-redhat-linux-gnu --target=arc-linux-uclibc --prefix=/install/path
+   $ make
+   $ make install
+
+If you do not have the build_gdbserver.sh script, you will need these variables set in your
+environment:
+
+   CFLAGS="-mA7 -static -O0"
+   LDFLAGS="-mA7"
+   CC=arc-linux-uclibc-gcc
+
+You will find a gdbserver in your install path.
+Copy it to an NFS share that is accessible from the board.
+
+Please use the script at <SOURCE-DIR>/insight/src/build_gdbserver.sh for reference.
+
+
+arc-elf32-gdb
+-------------
+
+Do
+   $ ./configure --target=arc-elf32 --prefix=/install/path \
+                 --with-expat [ --with-libexpat-prefix=/expat/install/path ] \
+                 [ --with-xiss  --with-xiss-prefix=/xISS/install/path ]
+   $ make 
+   $ make install
+
+(Where /install/path is a path to a directory where you want to install GDB.)
+
+You will need to have the expat library (available from http://www.libexpat.org) installed on your machine.
+The `configure' script will search for this library in several standard locations; if it is installed in an
+unusual path, you can use the `--with-libexpat-prefix' option to specify its location. 
+
+If you have the xISS (ARC Fast Instruction Set Simulator) installed, you may optionally build gdb to be able
+to use it directly, by specifying the --with-xiss and --with-xiss-prefix options.  In this case, the xISS
+installation must have been built with the option "--enable-mdb" specified to the 'configure' script in
+order that the required header files are located in the /xISS/install/path/include directory.
+
+
+Running gdb
+===========
+
+XISS
+----
+If you have built arc-elf32-gdb to be able to use the xISS directly, you will need to set the environment
+variable XISS_HOME to identify the /xISS/install/path directory in order to be able to use the gdb
+'target arcxiss' command.
+
+
+XISS instruction address trace file
+-----------------------------------
+arc-elf32-gdb may be used in conjection with the xISS to trace instruction execution; it may create a file
+containing the address of each instruction executed, in the order in which they were executed.  This file
+contains the data in a compressed encoding which results in a saving of about 80% of the uncompressed data
+size.  See the ARC gdb 'Getting Started' manual for more information.
+
+
+Auxiliary registers XML file
+----------------------------
+
+When using gdb, you will need to provide it with a file which describes the auxiliary registers of the target
+(e.g. ARCAngel 4, simulator) upon which you are debugging.
+
+By default, gdb will look for a file named 'arc-registers.xml'; it will look first in your current working
+directory, and then in your home directory.  Alternatively, a file may be specified by means of the
+'arc-reg-read-file' command.
+
+It is also possible to add new descriptions using the 'arc-reg-read-extra-file' command, thus allowing
+processor variants to be described by sets of common files and variant-specific files.
+
+Files containing descriptions for the ARC700, ARC600 and A5 variants of the ARC processor architecture are
+provided at
+
+   gdb/features/arc700-cpu.xml
+   gdb/features/arc600-cpu.xml
+   gdb/features/arc-a5-cpu.xml
+
+It is suggested that you copy the appropriate file for your target architecture to your home or working directory,
+and rename it to 'arc-registers.xml'.
+
+It is simple to define a new target description; the XML schema for the description is defined in the
+file
+
+    gdb/features/arc-registers.dtd 
+
+
+In essence, a target description consists of a set of register descriptions. Each register description has
+these attributes:
+
+        name        : the register name (case-insensitive); may be 'unused'
+        description : an (optional) textual description of the register's function
+        number      : the number of the register in the auxiliary register set (e.g. 0x0A for STATUS32)
+        mask        : a 32-bit mask which defines which bits of the register are valid (0xFFFFFFFF by default)
+        access      : the register's read/write access: R/O, R/W or W/O (R/W by default)
+
+
+Each register description may also have a set of field descriptions. Each field description has
+these attributes:
+
+        name        : the field name (case-insensitive); may be 'reserved'
+        description : an (optional) textual description of the field's function
+        onwrite     : the (optional) value (for a reserved field) which must be supplied on a write operation
+        offset      : the offset in bits of the field from the least significant bit (0) of the register
+        size        : the size of the field in bits
+        access      : the field's read/write access: R/O, R/W or W/O (the register's access by default)
+
+
+Each field description may also have a set of field meanings.  Each field meaning has these attributes:
+
+        value       : a value that the field may contain
+        description : a textual explanation of the meaning of the field when it contains that value
+
+
+There may also be a set of Build Configuration Registers (BCRs).  The descriptions of these registers do
+not have an access attribute; and, although a BCR may have a number of fields (which do not have access
+or onwrite attributes), these fields do not have field meanings.
+
+It is also possible to include definitions of Extension Core Registers: the descriptions of these have 
+merely the register number (which must be between 32 and 59 inclusive), and mask and access attributes.
diff --git a/include/dis-asm.h b/include/dis-asm.h
index bfe95b103..adcfdf699 100644
--- a/include/dis-asm.h
+++ b/include/dis-asm.h
@@ -210,7 +210,6 @@ typedef struct disassemble_info
 typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
 
 extern int print_insn_alpha		(bfd_vma, disassemble_info *);
-extern int print_insn_arc		(bfd_vma, disassemble_info *);
 extern int print_insn_avr		(bfd_vma, disassemble_info *);
 extern int print_insn_bfin		(bfd_vma, disassemble_info *);
 extern int print_insn_big_arm		(bfd_vma, disassemble_info *);
@@ -284,7 +283,7 @@ extern int print_insn_z80		(bfd_vma, disassemble_info *);
 extern int print_insn_z8001		(bfd_vma, disassemble_info *);
 extern int print_insn_z8002		(bfd_vma, disassemble_info *);
 
-extern disassembler_ftype arc_get_disassembler (bfd *);
+extern disassembler_ftype arc_get_disassembler (void *);
 extern disassembler_ftype cris_get_disassembler (bfd *);
 
 extern void print_i386_disassembler_options (FILE *);
diff --git a/include/elf/dwarf2.h b/include/elf/dwarf2.h
index 14da6b385..371a038c6 100644
--- a/include/elf/dwarf2.h
+++ b/include/elf/dwarf2.h
@@ -757,9 +757,7 @@ enum dwarf_call_frame_info
     /* GNU extensions.  */
     DW_CFA_GNU_window_save = 0x2d,
     DW_CFA_GNU_args_size = 0x2e,
-    DW_CFA_GNU_negative_offset_extended = 0x2f,
-    /* Metaware High C compiler extensions. */
-    DW_CFA_MWARC_info = 0x34
+    DW_CFA_GNU_negative_offset_extended = 0x2f
   };
 
 #define DW_CIE_ID	  0xffffffff
diff --git a/include/gdb/callback.h b/include/gdb/callback.h
index edddc4ad2..5ae1d00c3 100644
--- a/include/gdb/callback.h
+++ b/include/gdb/callback.h
@@ -320,14 +320,6 @@ int cb_is_stdin PARAMS ((host_callback *, int));
 int cb_is_stdout PARAMS ((host_callback *, int));
 int cb_is_stderr PARAMS ((host_callback *, int));
 
-/* Utility of cb_syscall to fetch a path name.
-   The buffer is malloc'd and the address is stored in BUFP.
-   The result is that of get_string, but prepended with
-   simulator_sysroot if the string starts with '/'.
-   If an error occurs, no buffer is left malloc'd.  */
-#define TADDR unsigned long
-int get_path PARAMS ((host_callback *, CB_SYSCALL *, TADDR, char **));
-
 /* Perform a system call.  */
 CB_RC cb_syscall PARAMS ((host_callback *, CB_SYSCALL *));
 
diff --git a/include/opcode/arc.h b/include/opcode/arc.h
index 184a0819d..3c3f5eb25 100644
--- a/include/opcode/arc.h
+++ b/include/opcode/arc.h
@@ -174,8 +174,8 @@ struct arc_operand_value {
 
 struct arc_ext_operand_value {
   struct arc_ext_operand_value *next;
-  struct arc_operand_value operand;
-};
+  struct arc_operand_value     operand;
+} *arc_ext_operands;
 
 /* List of extension condition codes, core registers and auxiliary registers.
    Calls to gas/config/tc-arc.c:arc_extoper built up this list.  */
@@ -357,14 +357,24 @@ struct arc_operand {
 		   const struct arc_operand_value **opval, int *invalid);
 };
 
-enum 
+enum
 {
   BR_exec_when_no_jump,
   BR_exec_always,
   BR_exec_when_jump
 };
+enum ARC_Debugger_OperandType
+{
+    ARC_UNDEFINED,
+    ARC_LIMM,
+    ARC_SHIMM,
+    ARC_REGISTER, 
+    ARCOMPACT_REGISTER /* Valid only for the 
+			  registers allowed in
+			  16 bit mode */
+};
 
-enum Flow 
+enum Flow
 {
   noflow,
   direct_jump,
@@ -377,7 +387,7 @@ enum Flow
 enum { no_reg = 99 };
 enum { allOperandsSize = 256 };
 
-struct arcDisState 
+struct arcDisState
 {
   void *_this;
   int instructionLen;
@@ -386,7 +396,7 @@ struct arcDisState
   const char *(*auxRegName)(void*, int);
   const char *(*condCodeName)(void*, int);
   const char *(*instName)(void*, int, int, int*);
-  
+
   unsigned char* instruction;
   unsigned index;
   const char *comm[6]; /* instr name, cond, NOP, 3 operands */
@@ -462,8 +472,6 @@ extern const struct arc_operand arc_operands_a4[];
 extern const struct arc_operand arc_operands_ac[];
 extern const struct arc_operand *arc_operands;
 extern int arc_operand_count;
-extern /*const*/ struct arc_opcode arc_opcodes[];
-extern const int arc_opcodes_count;
 extern const struct arc_operand_value arc_suffixes_a4[];
 extern const struct arc_operand_value arc_suffixes_ac[];
 extern const struct arc_operand_value *arc_suffixes;