target/loongarch: Add gdb support.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220606124333.2060567-42-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 101 insertions, 0 deletions

diff --git a/gdb-xml/loongarch-base64.xml b/gdb-xml/loongarch-base64.xml
new file mode 100644
index 0000000000..4962bdbd28
--- /dev/null
+++ b/gdb-xml/loongarch-base64.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2021 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.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.loongarch.base">
+  <reg name="r0" bitsize="64" type="uint64" group="general"/>
+  <reg name="r1" bitsize="64" type="uint64" group="general"/>
+  <reg name="r2" bitsize="64" type="uint64" group="general"/>
+  <reg name="r3" bitsize="64" type="uint64" group="general"/>
+  <reg name="r4" bitsize="64" type="uint64" group="general"/>
+  <reg name="r5" bitsize="64" type="uint64" group="general"/>
+  <reg name="r6" bitsize="64" type="uint64" group="general"/>
+  <reg name="r7" bitsize="64" type="uint64" group="general"/>
+  <reg name="r8" bitsize="64" type="uint64" group="general"/>
+  <reg name="r9" bitsize="64" type="uint64" group="general"/>
+  <reg name="r10" bitsize="64" type="uint64" group="general"/>
+  <reg name="r11" bitsize="64" type="uint64" group="general"/>
+  <reg name="r12" bitsize="64" type="uint64" group="general"/>
+  <reg name="r13" bitsize="64" type="uint64" group="general"/>
+  <reg name="r14" bitsize="64" type="uint64" group="general"/>
+  <reg name="r15" bitsize="64" type="uint64" group="general"/>
+  <reg name="r16" bitsize="64" type="uint64" group="general"/>
+  <reg name="r17" bitsize="64" type="uint64" group="general"/>
+  <reg name="r18" bitsize="64" type="uint64" group="general"/>
+  <reg name="r19" bitsize="64" type="uint64" group="general"/>
+  <reg name="r20" bitsize="64" type="uint64" group="general"/>
+  <reg name="r21" bitsize="64" type="uint64" group="general"/>
+  <reg name="r22" bitsize="64" type="uint64" group="general"/>
+  <reg name="r23" bitsize="64" type="uint64" group="general"/>
+  <reg name="r24" bitsize="64" type="uint64" group="general"/>
+  <reg name="r25" bitsize="64" type="uint64" group="general"/>
+  <reg name="r26" bitsize="64" type="uint64" group="general"/>
+  <reg name="r27" bitsize="64" type="uint64" group="general"/>
+  <reg name="r28" bitsize="64" type="uint64" group="general"/>
+  <reg name="r29" bitsize="64" type="uint64" group="general"/>
+  <reg name="r30" bitsize="64" type="uint64" group="general"/>
+  <reg name="r31" bitsize="64" type="uint64" group="general"/>
+  <reg name="pc" bitsize="64" type="code_ptr" group="general"/>
+  <reg name="badvaddr" bitsize="64" type="code_ptr" group="general"/>
+</feature>
diff --git a/gdb-xml/loongarch-fpu64.xml b/gdb-xml/loongarch-fpu64.xml
new file mode 100644
index 0000000000..e52cf89fbc
--- /dev/null
+++ b/gdb-xml/loongarch-fpu64.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2021 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.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.loongarch.fpu">
+
+  <union id="fpu64type">
+    <field name="f" type="ieee_single"/>
+    <field name="d" type="ieee_double"/>
+  </union>
+
+  <reg name="f0" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f1" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f2" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f3" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f4" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f5" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f6" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f7" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f8" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f9" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f10" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f11" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f12" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f13" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f14" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f15" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f16" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f17" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f18" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f19" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f20" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f21" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f22" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f23" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f24" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f25" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f26" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f27" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f28" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f29" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f30" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f31" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="fcc0" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc1" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc2" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc3" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc4" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc5" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc6" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc7" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcsr" bitsize="32" type="uint32" group="float"/>
+</feature>