From f92b06daf91de6766ae3bf6d6c1cabe1d242cede Mon Sep 17 00:00:00 2001 From: Walfred Tedeschi Date: Tue, 30 Apr 2013 12:33:52 +0000 Subject: [PATCH] Fix display of structures/bitfields in register description. Add support for displaying structures and bitfields for registers when executing "maint print c-tdesc". This command is also used when converting the xml target description file into c file. Example of the behaviour is given below reporting a snipet of the xml file and a snippet of the c code generated. XML file contains: ... ... Setting this xml file as target description file and issuing the maintenance print c-tdesc the following output is obtained: feature = tdesc_create_feature (result, "extra"); field_type = tdesc_named_type (feature, "int8"); tdesc_create_vector (feature, "v4int8", field_type, 4); field_type = tdesc_named_type (feature, "int16"); tdesc_create_vector (feature, "v2int16", field_type, 2); type = tdesc_create_union (feature, "vecint"); field_type = tdesc_named_type (feature, "v4int8"); tdesc_add_field (type, "v4", field_type); field_type = tdesc_named_type (feature, "v2int16"); tdesc_add_field (type, "v2", field_type); C output is not supported type "struct1". This is finally the issue. 2013-03-27 Walfred Tedeschi * target-descriptions.c (maint_print_c_tdesc_cmd): Add case to parse structures as register types and bitfields. testsuite/ * gdb.xml/maint_print_struct.exp: New file. * gdb.xml/maint_print_struct.xml: New file. Change-Id: I2e20b095d508319c80275e724a9452c7e2834067 Signed-off-by: Walfred Tedeschi --- gdb/ChangeLog | 6 ++++ gdb/target-descriptions.c | 33 +++++++++++++++++- gdb/testsuite/ChangeLog | 5 +++ gdb/testsuite/gdb.xml/maint_print_struct.exp | 35 ++++++++++++++++++++ gdb/testsuite/gdb.xml/maint_print_struct.xml | 26 +++++++++++++++ 5 files changed, 104 insertions(+), 1 deletion(-) create mode 100644 gdb/testsuite/gdb.xml/maint_print_struct.exp create mode 100644 gdb/testsuite/gdb.xml/maint_print_struct.xml diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 6a127cf0798..3e450e39085 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2013-03-27 Walfred Tedeschi + + * target-descriptions.c (maint_print_c_tdesc_cmd): + Add case to parse structures as register types and + bitfields. + 2013-04-30 Walfred Tedeschi * MAINTAINERS (Write After Approval): Add myself to the list. diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 95980c53457..44ad40122f6 100644 --- a/gdb/target-descriptions.c +++ b/gdb/target-descriptions.c @@ -1675,7 +1675,8 @@ maint_print_c_tdesc_cmd (char *args, int from_tty) printed_field_type = 1; } - if (type->kind == TDESC_TYPE_UNION + if ((type->kind == TDESC_TYPE_UNION + || type->kind == TDESC_TYPE_STRUCT) && VEC_length (tdesc_type_field, type->u.u.fields) > 0) { printf_unfiltered (" struct tdesc_type *type;\n"); @@ -1746,6 +1747,36 @@ feature = tdesc_create_feature (result, \"%s\");\n", (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", type->name, type->u.v.count); break; + case TDESC_TYPE_STRUCT: + printf_unfiltered + (" type = tdesc_create_struct (feature, \"%s\");\n", + type->name); + if (type->u.u.size != 0) + printf_unfiltered + (" tdesc_set_struct_size (type, %s);\n", + plongest (type->u.u.size)); + for (ix3 = 0; + VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); + ix3++) + { + /* Going first for implicitly sized types, else part handles + bitfields. As reported on xml-tdesc.c implicitly sized types + cannot contain a bitfield. */ + if (f->start == 0 && f->end == 0) + { + printf_unfiltered + (" field_type = tdesc_named_type (feature, \"%s\");\n", + f->type->name); + printf_unfiltered + (" tdesc_add_field (type, \"%s\", field_type);\n", + f->name); + } + else + printf_unfiltered + (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", + f->name, f->start, f->end); + } + break; case TDESC_TYPE_UNION: printf_unfiltered (" type = tdesc_create_union (feature, \"%s\");\n", diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index b2787175639..bfd7b68cf06 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2013-03-27 Walfred Tedeschi + + * gdb.xml/maint_print_struct.exp: New file. + * gdb.xml/maint_print_struct.xml: New file. + 2013-04-25 Tom Tromey * gdb.dwarf2/nostaticblock.exp: New file. diff --git a/gdb/testsuite/gdb.xml/maint_print_struct.exp b/gdb/testsuite/gdb.xml/maint_print_struct.exp new file mode 100644 index 00000000000..568d1740e82 --- /dev/null +++ b/gdb/testsuite/gdb.xml/maint_print_struct.exp @@ -0,0 +1,35 @@ +# This testcase is part of GDB, the GNU debugger. +# +# Copyright 2013 Free Software Foundation, Inc. +# +# Contributed by Intel Corp. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +if {[gdb_skip_xml_test]} { + unsupported "maint_print_struct.exp" + return -1 +} + +gdb_start + +# Required registers are not present so it is expected a warning. +# +gdb_test "set tdesc filename $srcdir/$subdir/maint_print_struct.xml" " +warning:.*" "setting a new tdesc having only a structure" + +gdb_test "maint print c-tdesc" " +.*tdesc_create_reg \\(feature, \"bad_reg1\", \[0-9\]+, 1, NULL, 128, \"two_fielded\"\\);\r +.*tdesc_create_reg \\(feature, \"bad_reg2\", \[0-9\]+, 1, NULL, 64, \"bitfield\"\\);\r +.*" "printing tdesc with a structure and a bitfield" diff --git a/gdb/testsuite/gdb.xml/maint_print_struct.xml b/gdb/testsuite/gdb.xml/maint_print_struct.xml new file mode 100644 index 00000000000..5ef06831062 --- /dev/null +++ b/gdb/testsuite/gdb.xml/maint_print_struct.xml @@ -0,0 +1,26 @@ + + + + + + + + + + + + + + + + + + + + + + -- 2.30.2