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authorVincent Chen <vincent.chen@sifive.com>2020-06-23 13:36:42 +0800
committerPalmer Dabbelt <palmerdabbelt@google.com>2020-07-09 20:09:28 -0700
commit8c080d3a974ad471d8324825851044284f1886c9 (patch)
treead0763f6ee248cc9e19011f4c22625f78c2bd4d5 /kernel/debug
parentdcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258 (diff)
downloadlinux-8c080d3a974ad471d8324825851044284f1886c9.tar.bz2
kgdb: enable arch to support XML packet.
The XML packet could be supported by required architecture if the architecture defines CONFIG_HAVE_ARCH_KGDB_QXFER_PKT and implement its own kgdb_arch_handle_qxfer_pkt(). Except for the kgdb_arch_handle_qxfer_pkt(), the architecture also needs to record the feature supported by gdb stub into the kgdb_arch_gdb_stub_feature, and these features will be reported to host gdb when gdb stub receives the qSupported packet. Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'kernel/debug')
-rw-r--r--kernel/debug/gdbstub.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index 61774aec46b4..a790026e42d0 100644
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -792,6 +792,19 @@ static void gdb_cmd_query(struct kgdb_state *ks)
}
break;
#endif
+#ifdef CONFIG_HAVE_ARCH_KGDB_QXFER_PKT
+ case 'S':
+ if (!strncmp(remcom_in_buffer, "qSupported:", 11))
+ strcpy(remcom_out_buffer, kgdb_arch_gdb_stub_feature);
+ break;
+ case 'X':
+ if (!strncmp(remcom_in_buffer, "qXfer:", 6))
+ kgdb_arch_handle_qxfer_pkt(remcom_in_buffer,
+ remcom_out_buffer);
+ break;
+#endif
+ default:
+ break;
}
}