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ab33b15255
GDB has two approaches to generating the target descriptions found in gdb/features/, the whole description approach, where the XML file contains a complete target description which is then used to generate a single C file that builds that target description. Or, the split feature approach, where the XML files contain a single target feature, each feature results in a single C file to create that one feature, and then a manually written C file is used to build a complete target description from individual features. There's a Makefile, gdb/features/Makefile, which is responsible for managing the regeneration of the C files from the XML files. However, some of the logic that selects between the whole description approach, or the split feature approach, is actually hard-coded into GDB, inside target-descriptions.c:maint_print_c_tdesc_cmd we check the path to the incoming XML file and use this to choose which type of C file we should generate. This commit removes this hard coding from GDB, and makes the Makefile entirely responsible for choosing the approach. This makes sense as the Makefile already has the XML files partitioned based on which approach they should use. In order to allow this change the 'maint print c-tdesc' command is given a new command option '-single-feature', which tells GDB which type of C file should be created. The makefile now supplies this flag to GDB. This did reveal a bug in features/Makefile, the rx.xml file was in the wrong list, this didn't matter previously as the actual choice of which approach to use was done in GDB. Now the Makefile decides, so placing each XML file in the correct list is critical. Tested this by doing 'make GDB=/path/to/gdb clean-cfiles cfiles' to regenerate all the C files from their XML source. There are no changes after this commit. gdb/ChangeLog: * features/Makefile (XMLTOC): Add rx.xml. (FEATURE_XMLFILES): Remove rx.xml. (FEATURE_CFILES rule): Pass '-single-feature' flag. * features/rx.c: Regenerate. * features/rx.xml: Wrap in `target` tags, and reindent. * target-descriptions.c (struct maint_print_c_tdesc_options): New structure. (maint_print_c_tdesc_opt_def): New typedef. (maint_print_c_tdesc_opt_defs): New static global. (make_maint_print_c_tdesc_options_def_group): New function. (maint_print_c_tdesc_cmd): Make use of command line flags, only print single feature C file for target descriptions containing a single feature. (maint_print_c_tdesc_cmd_completer): New function. (_initialize_target_descriptions): Update call to register command completer, and include command line flag in help text. gdb/doc/ChangeLog: * gdb.texinfo (Maintenance Commands): Update description of 'maint print c-tdesc'.
77 lines
3.1 KiB
XML
77 lines
3.1 KiB
XML
<?xml version="1.0"?>
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<!-- Copyright (C) 2019-2020 Free Software Foundation, Inc.
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved. -->
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<!DOCTYPE target SYSTEM "gdb-target.dtd">
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<target>
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<feature name="org.gnu.gdb.rx.core">
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<reg name="r0" bitsize="32" type="data_ptr"/>
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<reg name="r1" bitsize="32" type="uint32"/>
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<reg name="r2" bitsize="32" type="uint32"/>
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<reg name="r3" bitsize="32" type="uint32"/>
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<reg name="r4" bitsize="32" type="uint32"/>
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<reg name="r5" bitsize="32" type="uint32"/>
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<reg name="r6" bitsize="32" type="uint32"/>
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<reg name="r7" bitsize="32" type="uint32"/>
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<reg name="r8" bitsize="32" type="uint32"/>
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<reg name="r9" bitsize="32" type="uint32"/>
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<reg name="r10" bitsize="32" type="uint32"/>
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<reg name="r11" bitsize="32" type="uint32"/>
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<reg name="r12" bitsize="32" type="uint32"/>
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<reg name="r13" bitsize="32" type="uint32"/>
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<reg name="r14" bitsize="32" type="uint32"/>
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<reg name="r15" bitsize="32" type="uint32"/>
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<flags id="psw_flags" size="4">
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<field name="C" start="0" end="0"/>
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<field name="Z" start="1" end="1"/>
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<field name="S" start="2" end="2"/>
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<field name="O" start="3" end="3"/>
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<field name="I" start="16" end="16"/>
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<field name="U" start="17" end="17"/>
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<field name="PM" start="20" end="20"/>
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<field name="IPL0" start="24" end="24"/>
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<field name="IPL1" start="25" end="25"/>
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<field name="IPL2" start="26" end="26"/>
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<field name="IPL3" start="27" end="27"/>
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</flags>
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<flags id="fpsw_flags" size="4">
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<field name="RM0" start="0" end="0"/>
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<field name="RM1" start="1" end="1"/>
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<field name="CV" start="2" end="2"/>
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<field name="CO" start="3" end="3"/>
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<field name="CZ" start="4" end="4"/>
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<field name="CU" start="5" end="5"/>
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<field name="CX" start="6" end="6"/>
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<field name="CE" start="7" end="7"/>
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<field name="DN" start="8" end="8"/>
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<field name="EV" start="10" end="10"/>
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<field name="EO" start="11" end="11"/>
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<field name="EZ" start="12" end="12"/>
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<field name="EU" start="13" end="13"/>
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<field name="EX" start="14" end="14"/>
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<field name="FV" start="26" end="26"/>
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<field name="FO" start="27" end="27"/>
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<field name="FZ" start="28" end="28"/>
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<field name="FU" start="29" end="29"/>
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<field name="FX" start="30" end="30"/>
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<field name="FS" start="31" end="31"/>
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</flags>
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<reg name="usp" bitsize="32" type="data_ptr"/>
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<reg name="isp" bitsize="32" type="data_ptr"/>
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<reg name="psw" bitsize="32" type="psw_flags"/>
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<reg name="pc" bitsize="32" type="code_ptr"/>
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<reg name="intb" bitsize="32" type="data_ptr"/>
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<reg name="bpsw" bitsize="32" type="psw_flags"/>
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<reg name="bpc" bitsize="32" type="code_ptr"/>
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<reg name="fintv" bitsize="32" type="code_ptr"/>
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<reg name="fpsw" bitsize="32" type="fpsw_flags"/>
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<reg name="acc" bitsize="64" type="uint64"/>
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</feature>
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</target>
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