[PATCH 1/4] arc: Add XML target features for Linux targets

Shahab Vahedi
2020-03-26T12:52:53Z

From: Anton Kolesov <Anton.Kolesov@synopsys.com>

Add XML target features for Linux targets. Compared to default
Linux features:

- Explicitly specify CPU machine.
- Remove baremetal only ILINK{,1,2} registers.
- Add LP_START and LP_END registers for hardware loops - required to
properly evaluate possible next instruction during software single
instruction stepping.
- Add BTA register which contains branch target address - address of
next instruction when processor is in the delay slot.
- ARC HS description also adds R30, R58 and R59 registers, specific to
this architecture.

gdb/ChangeLog:
2020-03-26 Anton Kolesov <anton.kolesov@synopsys.com>

* arch/arc.h (arc_create_target_description): Support Linux targets.
* arch/arc.c (arc_create_target_description): Likewise.
* arc-tdep.c (arc_tdesc_init): Update invocation of
arc_read_description.
* features/Makefile (FEATURE_XMLFILES): Add new files.
* features/arc/aux-arcompact-linux.xml: New file.
* features/arc/aux-v2-linux.xml: Likewise.
* features/arc/core-arcompact-linux.xml: Likewise.
* features/arc/core-v2-linux.xml: Likewise.
* features/arc/aux-arcompact-linux.c: Generate.
* features/arc/aux-v2-linux.c: Likewise.
* features/arc/core-arcompact-linux.c: Likewise.
* features/arc/core-v2-linux.c: Likewise.
---
gdb/arc-tdep.c | 4 +-
gdb/arch/arc.c | 40 ++++++++++++----
gdb/arch/arc.h | 18 ++++---
gdb/features/Makefile | 4 ++
gdb/features/arc/aux-arcompact-linux.c | 34 +++++++++++++
gdb/features/arc/aux-arcompact-linux.xml | 31 ++++++++++++
gdb/features/arc/aux-v2-linux.c | 38 +++++++++++++++
gdb/features/arc/aux-v2-linux.xml | 35 ++++++++++++++
gdb/features/arc/core-arcompact-linux.c | 45 ++++++++++++++++++
gdb/features/arc/core-arcompact-linux.xml | 56 ++++++++++++++++++++++
gdb/features/arc/core-v2-linux.c | 48 +++++++++++++++++++
gdb/features/arc/core-v2-linux.xml | 58 +++++++++++++++++++++++
12 files changed, 394 insertions(+), 17 deletions(-)
create mode 100644 gdb/features/arc/aux-arcompact-linux.c
create mode 100644 gdb/features/arc/aux-arcompact-linux.xml
create mode 100644 gdb/features/arc/aux-v2-linux.c
create mode 100644 gdb/features/arc/aux-v2-linux.xml
create mode 100644 gdb/features/arc/core-arcompact-linux.c
create mode 100644 gdb/features/arc/core-arcompact-linux.xml
create mode 100644 gdb/features/arc/core-v2-linux.c
create mode 100644 gdb/features/arc/core-v2-linux.xml

diff --git a/gdb/arc-tdep.c b/gdb/arc-tdep.c
index 3020099c335..a4f3f44b4fb 100644
--- a/gdb/arc-tdep.c
+++ b/gdb/arc-tdep.c
@@ -1756,9 +1756,9 @@ arc_tdesc_init (struct gdbarch_info info, const struct target_desc **tdesc,
if (!tdesc_has_registers (tdesc_loc))
{
if (is_arcv2)
- tdesc_loc = arc_read_description (ARC_SYS_TYPE_ARCV2);
+ tdesc_loc = arc_read_description (ARC_SYS_TYPE_ARCV2_BMT);
else
- tdesc_loc = arc_read_description (ARC_SYS_TYPE_ARCOMPACT);
+ tdesc_loc = arc_read_description (ARC_SYS_TYPE_ARCOMPACT_BMT);
}
else
{
diff --git a/gdb/arch/arc.c b/gdb/arch/arc.c
index 9552b4aff97..0babbf8a36a 100644
--- a/gdb/arch/arc.c
+++ b/gdb/arch/arc.c
@@ -24,8 +24,12 @@
/* Target description features. */
#include "features/arc/core-v2.c"
#include "features/arc/aux-v2.c"
+#include "features/arc/core-v2-linux.c"
+#include "features/arc/aux-v2-linux.c"
#include "features/arc/core-arcompact.c"
#include "features/arc/aux-arcompact.c"
+#include "features/arc/core-arcompact-linux.c"
+#include "features/arc/aux-arcompact-linux.c"

/* See arc.h. */

@@ -37,21 +41,39 @@ arc_create_target_description (arc_sys_type sys_type)
long regnum = 0;

#ifndef IN_PROCESS_AGENT
- if (sys_type == ARC_SYS_TYPE_ARCV2)
+ if (sys_type == ARC_SYS_TYPE_ARCV2_BMT)
set_tdesc_architecture (tdesc, "arc:ARCv2");
+ else if (sys_type == ARC_SYS_TYPE_ARCV2_LNX)
+ /* If this is ARCv2 Linux, then it is ARC HS. */
+ set_tdesc_architecture (tdesc, "arc:HS");
else
set_tdesc_architecture (tdesc, "arc:ARC700");
+
+ if (sys_type == ARC_SYS_TYPE_ARCOMPACT_LNX
+ || sys_type == ARC_SYS_TYPE_ARCV2_LNX)
+ set_tdesc_osabi (tdesc, "GNU/Linux");
#endif

- if (sys_type == ARC_SYS_TYPE_ARCV2)
- {
- regnum = create_feature_arc_core_v2 (tdesc, regnum);
- regnum = create_feature_arc_aux_v2 (tdesc, regnum);
- }
- else
+ switch (sys_type)
{
- regnum = create_feature_arc_core_arcompact (tdesc, regnum);
- regnum = create_feature_arc_aux_arcompact (tdesc, regnum);
+ case ARC_SYS_TYPE_ARCOMPACT_BMT:
+ regnum = create_feature_arc_core_arcompact (tdesc, regnum);
+ regnum = create_feature_arc_aux_arcompact (tdesc, regnum);
+ break;
+ case ARC_SYS_TYPE_ARCOMPACT_LNX:
+ regnum = create_feature_arc_core_arcompact_linux (tdesc, regnum);
+ regnum = create_feature_arc_aux_arcompact_linux (tdesc, regnum);
+ break;
+ case ARC_SYS_TYPE_ARCV2_BMT:
+ regnum = create_feature_arc_core_v2 (tdesc, regnum);
+ regnum = create_feature_arc_aux_v2 (tdesc, regnum);
+ break;
+ case ARC_SYS_TYPE_ARCV2_LNX:
+ regnum = create_feature_arc_core_v2_linux (tdesc, regnum);
+ regnum = create_feature_arc_aux_v2_linux (tdesc, regnum);
+ break;
+ default:
+ gdb_assert(!"Invalid arc_sys_type.");
}

return tdesc;
diff --git a/gdb/arch/arc.h b/gdb/arch/arc.h
index fd806ae7d34..3c19118b946 100644
--- a/gdb/arch/arc.h
+++ b/gdb/arch/arc.h
@@ -23,8 +23,10 @@
/* Supported ARC system hardware types. */
enum arc_sys_type
{
- ARC_SYS_TYPE_ARCOMPACT = 0, /* ARC600 or ARC700 */
- ARC_SYS_TYPE_ARCV2, /* ARC EM or ARC HS */
+ ARC_SYS_TYPE_ARCOMPACT_BMT = 0, /* ARC600 or ARC700 (baremetal) */
+ ARC_SYS_TYPE_ARCOMPACT_LNX, /* ARC600 or ARC700 (linux) */
+ ARC_SYS_TYPE_ARCV2_BMT, /* ARC EM or ARC HS (baremetal) */
+ ARC_SYS_TYPE_ARCV2_LNX, /* ARC HS (linux) */
ARC_SYS_TYPE_NUM
};

@@ -33,10 +35,14 @@ arc_sys_type_to_str (const arc_sys_type type)
{
switch (type)
{
- case ARC_SYS_TYPE_ARCOMPACT:
- return "ARC_SYS_TYPE_ARCOMPACT";
- case ARC_SYS_TYPE_ARCV2:
- return "ARC_SYS_TYPE_ARCV2";
+ case ARC_SYS_TYPE_ARCOMPACT_BMT:
+ return "ARC_SYS_TYPE_ARCOMPACT_BMT";
+ case ARC_SYS_TYPE_ARCOMPACT_LNX:
+ return "ARC_SYS_TYPE_ARCOMPACT_LNX";
+ case ARC_SYS_TYPE_ARCV2_BMT:
+ return "ARC_SYS_TYPE_ARCV2_BMT";
+ case ARC_SYS_TYPE_ARCV2_LNX:
+ return "ARC_SYS_TYPE_ARCV2_LNX";
default:
return "Invalid";
}
diff --git a/gdb/features/Makefile b/gdb/features/Makefile
index cc65baa6eda..a95be667dc1 100644
--- a/gdb/features/Makefile
+++ b/gdb/features/Makefile
@@ -206,8 +206,12 @@ FEATURE_XMLFILES = aarch64-core.xml \
aarch64-pauth.xml \
arc/core-v2.xml \
arc/aux-v2.xml \
+ arc/core-v2-linux.xml \
+ arc/aux-v2-linux.xml \
arc/core-arcompact.xml \
arc/aux-arcompact.xml \
+ arc/core-arcompact-linux.xml \
+ arc/aux-arcompact-linux.xml \
arm/arm-core.xml \
arm/arm-fpa.xml \
arm/arm-m-profile.xml \
diff --git a/gdb/features/arc/aux-arcompact-linux.c b/gdb/features/arc/aux-arcompact-linux.c
new file mode 100644
index 00000000000..41f26c1e2ec
--- /dev/null
+++ b/gdb/features/arc/aux-arcompact-linux.c
@@ -0,0 +1,34 @@
+/* THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi:set ro:
+ Original: aux-arcompact-linux.xml */
+
+#include "gdbsupport/tdesc.h"
+
+static int
+create_feature_arc_aux_arcompact_linux (struct target_desc *result, long regnum)
+{
+ struct tdesc_feature *feature;
+
+ feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal");
+ tdesc_type_with_fields *type_with_fields;
+ type_with_fields = tdesc_create_flags (feature, "status32_type", 4);
+ tdesc_add_flag (type_with_fields, 0, "H");
+ tdesc_add_bitfield (type_with_fields, "E", 1, 2);
+ tdesc_add_bitfield (type_with_fields, "A", 3, 4);
+ tdesc_add_flag (type_with_fields, 5, "AE");
+ tdesc_add_flag (type_with_fields, 6, "DE");
+ tdesc_add_flag (type_with_fields, 7, "U");
+ tdesc_add_flag (type_with_fields, 8, "V");
+ tdesc_add_flag (type_with_fields, 9, "C");
+ tdesc_add_flag (type_with_fields, 10, "N");
+ tdesc_add_flag (type_with_fields, 11, "Z");
+ tdesc_add_flag (type_with_fields, 12, "L");
+ tdesc_add_flag (type_with_fields, 13, "R");
+ tdesc_add_flag (type_with_fields, 14, "SE");
+
+ tdesc_create_reg (feature, "pc", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "status32", regnum++, 1, NULL, 32, "status32_type");
+ tdesc_create_reg (feature, "lp_start", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "lp_end", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "bta", regnum++, 1, NULL, 32, "code_ptr");
+ return regnum;
+}
diff --git a/gdb/features/arc/aux-arcompact-linux.xml b/gdb/features/arc/aux-arcompact-linux.xml
new file mode 100644
index 00000000000..0d72373eda3
--- /dev/null
+++ b/gdb/features/arc/aux-arcompact-linux.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2020 Free Software Foundation, Inc.
+
+ Copying and distribution of this file, with or without modification,
+ are permitted in any medium without royalty provided the copyright
+ notice and this notice are preserved. -->
+
+
+<feature name="org.gnu.gdb.arc.aux-minimal">
+ <flags id="status32_type" size="4">
+ <field name="H" start="0" end="0"/>
+ <field name="E" start="1" end="2"/>
+ <field name="A" start="3" end="4"/>
+ <field name="AE" start="5" end="5"/>
+ <field name="DE" start="6" end="6"/>
+ <field name="U" start="7" end="7"/>
+ <field name="V" start="8" end="8"/>
+ <field name="C" start="9" end="9"/>
+ <field name="N" start="10" end="10"/>
+ <field name="Z" start="11" end="11"/>
+ <field name="L" start="12" end="12"/>
+ <field name="R" start="13" end="13"/>
+ <field name="SE" start="14" end="14"/>
+ </flags>
+
+ <reg name="pc" bitsize="32" type="code_ptr"/>
+ <reg name="status32" bitsize="32" type="status32_type"/>
+ <reg name="lp_start" bitsize="32" type="code_ptr"/>
+ <reg name="lp_end" bitsize="32" type="code_ptr"/>
+ <reg name="bta" bitsize="32" type="code_ptr"/>
+</feature>
diff --git a/gdb/features/arc/aux-v2-linux.c b/gdb/features/arc/aux-v2-linux.c
new file mode 100644
index 00000000000..6e4d7c02efa
--- /dev/null
+++ b/gdb/features/arc/aux-v2-linux.c
@@ -0,0 +1,38 @@
+/* THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi:set ro:
+ Original: aux-v2-linux.xml */
+
+#include "gdbsupport/tdesc.h"
+
+static int
+create_feature_arc_aux_v2_linux (struct target_desc *result, long regnum)
+{
+ struct tdesc_feature *feature;
+
+ feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal");
+ tdesc_type_with_fields *type_with_fields;
+ type_with_fields = tdesc_create_flags (feature, "status32_type", 4);
+ tdesc_add_flag (type_with_fields, 0, "H");
+ tdesc_add_bitfield (type_with_fields, "E", 1, 4);
+ tdesc_add_flag (type_with_fields, 5, "AE");
+ tdesc_add_flag (type_with_fields, 6, "DE");
+ tdesc_add_flag (type_with_fields, 7, "U");
+ tdesc_add_flag (type_with_fields, 8, "V");
+ tdesc_add_flag (type_with_fields, 9, "C");
+ tdesc_add_flag (type_with_fields, 10, "N");
+ tdesc_add_flag (type_with_fields, 11, "Z");
+ tdesc_add_flag (type_with_fields, 12, "L");
+ tdesc_add_flag (type_with_fields, 13, "DZ");
+ tdesc_add_flag (type_with_fields, 14, "SC");
+ tdesc_add_flag (type_with_fields, 15, "ES");
+ tdesc_add_bitfield (type_with_fields, "RB", 16, 18);
+ tdesc_add_flag (type_with_fields, 19, "AD");
+ tdesc_add_flag (type_with_fields, 20, "US");
+ tdesc_add_flag (type_with_fields, 31, "IE");
+
+ tdesc_create_reg (feature, "pc", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "status32", regnum++, 1, NULL, 32, "status32_type");
+ tdesc_create_reg (feature, "lp_start", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "lp_end", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "bta", regnum++, 1, NULL, 32, "code_ptr");
+ return regnum;
+}
diff --git a/gdb/features/arc/aux-v2-linux.xml b/gdb/features/arc/aux-v2-linux.xml
new file mode 100644
index 00000000000..165ebb1d6d6
--- /dev/null
+++ b/gdb/features/arc/aux-v2-linux.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2020 Free Software Foundation, Inc.
+
+ Copying and distribution of this file, with or without modification,
+ are permitted in any medium without royalty provided the copyright
+ notice and this notice are preserved. -->
+
+
+<feature name="org.gnu.gdb.arc.aux-minimal">
+ <flags id="status32_type" size="4">
+ <field name="H" start="0" end="0"/>
+ <field name="E" start="1" end="4"/>
+ <field name="AE" start="5" end="5"/>
+ <field name="DE" start="6" end="6"/>
+ <field name="U" start="7" end="7"/>
+ <field name="V" start="8" end="8"/>
+ <field name="C" start="9" end="9"/>
+ <field name="N" start="10" end="10"/>
+ <field name="Z" start="11" end="11"/>
+ <field name="L" start="12" end="12"/>
+ <field name="DZ" start="13" end="13"/>
+ <field name="SC" start="14" end="14"/>
+ <field name="ES" start="15" end="15"/>
+ <field name="RB" start="16" end="18"/>
+ <field name="AD" start="19" end="19"/>
+ <field name="US" start="20" end="20"/>
+ <field name="IE" start="31" end="31"/>
+ </flags>
+
+ <reg name="pc" bitsize="32" type="code_ptr"/>
+ <reg name="status32" bitsize="32" type="status32_type"/>
+ <reg name="lp_start" bitsize="32" type="code_ptr"/>
+ <reg name="lp_end" bitsize="32" type="code_ptr"/>
+ <reg name="bta" bitsize="32" type="code_ptr"/>
+</feature>
diff --git a/gdb/features/arc/core-arcompact-linux.c b/gdb/features/arc/core-arcompact-linux.c
new file mode 100644
index 00000000000..c870413e922
--- /dev/null
+++ b/gdb/features/arc/core-arcompact-linux.c
@@ -0,0 +1,45 @@
+/* THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi:set ro:
+ Original: core-arcompact-linux.xml */
+
+#include "gdbsupport/tdesc.h"
+
+static int
+create_feature_arc_core_arcompact_linux (struct target_desc *result, long regnum)
+{
+ struct tdesc_feature *feature;
+
+ feature = tdesc_create_feature (result, "org.gnu.gdb.arc.core.arcompact");
+ tdesc_create_reg (feature, "r0", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r1", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r2", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r3", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r4", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r5", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r6", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r7", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r8", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r9", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r10", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r11", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r12", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r13", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r14", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r15", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r16", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r17", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r18", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r19", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r20", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r21", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r22", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r23", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r24", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r25", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "gp", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "fp", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "sp", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "blink", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "lp_count", regnum++, 1, NULL, 32, "uint32");
+ tdesc_create_reg (feature, "pcl", regnum++, 1, NULL, 32, "code_ptr");
+ return regnum;
+}
diff --git a/gdb/features/arc/core-arcompact-linux.xml b/gdb/features/arc/core-arcompact-linux.xml
new file mode 100644
index 00000000000..9b2865d32be
--- /dev/null
+++ b/gdb/features/arc/core-arcompact-linux.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2020 Free Software Foundation, Inc.
+
+ Copying and distribution of this file, with or without modification,
+ are permitted in any medium without royalty provided the copyright
+ notice and this notice are preserved. -->
+
+
+<feature name="org.gnu.gdb.arc.core.arcompact">
+ <reg name="r0" bitsize="32"/>
+ <reg name="r1" bitsize="32"/>
+ <reg name="r2" bitsize="32"/>
+ <reg name="r3" bitsize="32"/>
+ <reg name="r4" bitsize="32"/>
+ <reg name="r5" bitsize="32"/>
+ <reg name="r6" bitsize="32"/>
+ <reg name="r7" bitsize="32"/>
+ <reg name="r8" bitsize="32"/>
+ <reg name="r9" bitsize="32"/>
+ <reg name="r10" bitsize="32"/>
+ <reg name="r11" bitsize="32"/>
+ <reg name="r12" bitsize="32"/>
+ <reg name="r13" bitsize="32"/>
+ <reg name="r14" bitsize="32"/>
+ <reg name="r15" bitsize="32"/>
+ <reg name="r16" bitsize="32"/>
+ <reg name="r17" bitsize="32"/>
+ <reg name="r18" bitsize="32"/>
+ <reg name="r19" bitsize="32"/>
+ <reg name="r20" bitsize="32"/>
+ <reg name="r21" bitsize="32"/>
+ <reg name="r22" bitsize="32"/>
+ <reg name="r23" bitsize="32"/>
+ <reg name="r24" bitsize="32"/>
+ <reg name="r25" bitsize="32"/>
+
+
+ <reg name="gp" bitsize="32" type="data_ptr"/>
+ <reg name="fp" bitsize="32" type="data_ptr"/>
+ <reg name="sp" bitsize="32" type="data_ptr"/>
+
+
+ <reg name="blink" bitsize="32" type="code_ptr"/>
+
+
+
+
+ <reg name="lp_count" bitsize="32" type="uint32"/>
+
+
+
+
+
+
+ <reg name="pcl" bitsize="32" type="code_ptr" group=""/>
+</feature>
diff --git a/gdb/features/arc/core-v2-linux.c b/gdb/features/arc/core-v2-linux.c
new file mode 100644
index 00000000000..d3e563778ff
--- /dev/null
+++ b/gdb/features/arc/core-v2-linux.c
@@ -0,0 +1,48 @@
+/* THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi:set ro:
+ Original: core-v2-linux.xml */
+
+#include "gdbsupport/tdesc.h"
+
+static int
+create_feature_arc_core_v2_linux (struct target_desc *result, long regnum)
+{
+ struct tdesc_feature *feature;
+
+ feature = tdesc_create_feature (result, "org.gnu.gdb.arc.core.v2");
+ tdesc_create_reg (feature, "r0", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r1", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r2", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r3", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r4", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r5", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r6", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r7", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r8", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r9", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r10", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r11", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r12", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r13", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r14", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r15", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r16", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r17", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r18", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r19", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r20", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r21", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r22", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r23", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r24", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r25", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "gp", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "fp", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "sp", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "r30", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "blink", regnum++, 1, NULL, 32, "code_ptr");
+ tdesc_create_reg (feature, "r58", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "r59", regnum++, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "lp_count", regnum++, 1, NULL, 32, "uint32");
+ tdesc_create_reg (feature, "pcl", regnum++, 1, NULL, 32, "code_ptr");
+ return regnum;
+}
diff --git a/gdb/features/arc/core-v2-linux.xml b/gdb/features/arc/core-v2-linux.xml
new file mode 100644
index 00000000000..3ac4a86da56
--- /dev/null
+++ b/gdb/features/arc/core-v2-linux.xml
@@ -0,0 +1,58 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2020 Free Software Foundation, Inc.
+
+ Copying and distribution of this file, with or without modification,
+ are permitted in any medium without royalty provided the copyright
+ notice and this notice are preserved. -->
+
+
+<feature name="org.gnu.gdb.arc.core.v2">
+ <reg name="r0" bitsize="32"/>
+ <reg name="r1" bitsize="32"/>
+ <reg name="r2" bitsize="32"/>
+ <reg name="r3" bitsize="32"/>
+ <reg name="r4" bitsize="32"/>
+ <reg name="r5" bitsize="32"/>
+ <reg name="r6" bitsize="32"/>
+ <reg name="r7" bitsize="32"/>
+ <reg name="r8" bitsize="32"/>
+ <reg name="r9" bitsize="32"/>
+ <reg name="r10" bitsize="32"/>
+ <reg name="r11" bitsize="32"/>
+ <reg name="r12" bitsize="32"/>
+ <reg name="r13" bitsize="32"/>
+ <reg name="r14" bitsize="32"/>
+ <reg name="r15" bitsize="32"/>
+ <reg name="r16" bitsize="32"/>
+ <reg name="r17" bitsize="32"/>
+ <reg name="r18" bitsize="32"/>
+ <reg name="r19" bitsize="32"/>
+ <reg name="r20" bitsize="32"/>
+ <reg name="r21" bitsize="32"/>
+ <reg name="r22" bitsize="32"/>
+ <reg name="r23" bitsize="32"/>
+ <reg name="r24" bitsize="32"/>
+ <reg name="r25" bitsize="32"/>
+
+
+ <reg name="gp" bitsize="32" type="data_ptr"/>
+ <reg name="fp" bitsize="32" type="data_ptr"/>
+ <reg name="sp" bitsize="32" type="data_ptr"/>
+
+ <reg name="r30" bitsize="32" group=""/>
+ <reg name="blink" bitsize="32" type="code_ptr"/>
+
+
+ <reg name="r58" bitsize="32"/>
+ <reg name="r59" bitsize="32"/>
+
+
+ <reg name="lp_count" bitsize="32" type="uint32"/>
+
+
+
+
+
+
+ <reg name="pcl" bitsize="32" type="code_ptr" group=""/>
+</feature>
--
2.26.0