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author | Yao Qi <yao.qi@linaro.org> | 2017-09-05 09:54:53 +0100 |
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committer | Yao Qi <yao.qi@linaro.org> | 2017-09-05 09:54:53 +0100 |
commit | 0abe8a8992948559d225ff120095e42a1a6a36f4 (patch) | |
tree | b04557a71db21b7d636d7bbf2285ee502ce8ea6e /gdb/gdbserver/tdesc.h | |
parent | 0a188386c032126045979b7fb7c238d715c81eb5 (diff) | |
download | gdb-0abe8a8992948559d225ff120095e42a1a6a36f4.zip gdb-0abe8a8992948559d225ff120095e42a1a6a36f4.tar.gz gdb-0abe8a8992948559d225ff120095e42a1a6a36f4.tar.bz2 |
Dynamically composite xml in reply to GDB
GDBserver still uses pre-generated target descriptions in order to
reply to GDB's query on target description (see xml-builtin-generated.c
in GDBserver build directory). This patch teaches GDBserver to
create XML contents according to the target descriptions rather than
using pre-generated ones.
First, change target feature c files to pass the feature xml file
name to tdesc_create_feature, so that target description in GDBserver
can record them, and create XML contents from these features in
buffer, like
...
<xi:include href="$FEATURE1_XML_NAME"/>
<xi:include href="$FEATURE2_XML_NAME"/>
...
and send this buffer back to GDB.
Note that this patch reuses target_desc.xmltarget a little bit, which is
to hold the XML contents dynamically generated in tdesc_get_features_xml.
However, it is not xfree'ed in ~target_desc, because we can't tell it is
from xstrdup or a literal string. Since we don't delete target_desc,
there is no memory leak yet. After we change all target descriptions to
the new style, target_desc.xmltarget is from xstrdup, then, we can safely
xfree it in ~target_desc.
gdb:
2017-09-05 Yao Qi <yao.qi@linaro.org>
* arch/tdesc.h (tdesc_create_feature): Add an argument xml.
* target-descriptions.c (tdesc_create_feature): Likewise, and
adjust code.
* features/i386/32bit-avx.c: Re-generated.
* features/i386/32bit-avx512.c: Re-generated.
* features/i386/32bit-core.c: Re-generated.
* features/i386/32bit-linux.c: Re-generated.
* features/i386/32bit-mpx.c: Re-generated.
* features/i386/32bit-pkeys.c: Re-generated.
* features/i386/32bit-sse.c: Re-generated.
gdb/gdbserver:
2017-09-05 Yao Qi <yao.qi@linaro.org>
* linux-x86-tdesc.c: Don't include <inttypes.h>.
(i386_linux_read_description) [!IN_PROCESS_AGENT]: Call
set_tdesc_architecture and set_tdesc_osabi. Remove code setting
.xmltarget.
* server.c (get_features_xml): Call tdesc_get_features_xml.
* tdesc.c (set_tdesc_architecture): New function.
(set_tdesc_osabi): New function.
(tdesc_get_features_xml): New function.
(tdesc_create_feature): Add an argument.
* tdesc.h (struct target_desc) <features>: New field.
<arch, osabi>: New field.
(~target_desc): xfree features, arch, and osabi.
(target_desc::oerator==): Don't compare .xmltarget.
[!IN_PROCESS_AGENT] (set_tdesc_architecture): Declare.
(set_tdesc_osabi): Likewise.
(tdesc_get_features_xml): Likewise.
Diffstat (limited to 'gdb/gdbserver/tdesc.h')
-rw-r--r-- | gdb/gdbserver/tdesc.h | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/gdb/gdbserver/tdesc.h b/gdb/gdbserver/tdesc.h index 49c82c6..fe3c78f 100644 --- a/gdb/gdbserver/tdesc.h +++ b/gdb/gdbserver/tdesc.h @@ -49,9 +49,21 @@ struct target_desc : tdesc_feature /* Defines what to return when looking for the "target.xml" file in response to qXfer:features:read. Its contents can either be verbatim XML code (prefixed with a '@') or else the name of the - actual XML file to be used in place of "target.xml". */ + actual XML file to be used in place of "target.xml". + + It can be NULL, then, its content is got from the following three + fields features, arch, and osabi in tdesc_get_features_xml. */ const char *xmltarget = NULL; + /* XML features in this target description. */ + VEC (char_ptr) *features = NULL; + + /* The value of <architecture> element in the XML, replying GDB. */ + const char *arch = NULL; + + /* The value of <osabi> element in the XML, replying GDB. */ + const char *osabi = NULL; + public: target_desc () : reg_defs (NULL), registers_size (0) @@ -65,6 +77,15 @@ public: for (i = 0; VEC_iterate (tdesc_reg_p, reg_defs, i, reg); i++) xfree (reg); VEC_free (tdesc_reg_p, reg_defs); + + xfree ((char *) arch); + xfree ((char *) osabi); + + char *f; + + for (i = 0; VEC_iterate (char_ptr, features, i, f); i++) + xfree (f); + VEC_free (char_ptr, features); } bool operator== (const target_desc &other) const @@ -96,9 +117,6 @@ public: if (other.expedite_regs[i] != NULL) return false; - if (strcmp (xmltarget, other.xmltarget) != 0) - return false; - return true; } @@ -123,4 +141,12 @@ void init_target_desc (struct target_desc *tdesc); const struct target_desc *current_target_desc (void); +#ifndef IN_PROCESS_AGENT +void set_tdesc_architecture (struct target_desc *target_desc, + const char *name); +void set_tdesc_osabi (struct target_desc *target_desc, const char *name); + +const char *tdesc_get_features_xml (struct target_desc *tdesc); +#endif + #endif /* TDESC_H */ |