d3b1e87423
* dwarf2loc.c (extract_bits_primitive): New function. (extract_bits): Likewise. (insert_bits): Likewise. (copy_bitwise): Likewise. (read_pieced_value): Do all operations in bits. (write_pieced_value): Likewise. * dwarf2expr.h (struct dwarf_expr_piece) <offset>: New field. * dwarf2expr.c (add_piece): New arguments bit_piece, offset. Always use xrealloc to resize piece array. (execute_stack_op) <DW_OP_reg0>: Handle DW_OP_bit_piece. <DW_OP_piece>: Update. <DW_OP_bit_piece>: New case. gdb/testsuite * gdb.dwarf2/pieces.exp (pieces_test_f3): New proc. Call it. * gdb.dwarf2/pieces.S: Update. * gdb.dwarf2/pieces.c (struct B): Remove initial field.
110 lines
3.7 KiB
Text
110 lines
3.7 KiB
Text
# Copyright 2010 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test some DWARF piece operators.
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# This test can only be run on targets which support DWARF-2 and use gas.
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# For now pick a sampling of likely targets.
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if {![istarget *-*-linux*]
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&& ![istarget *-*-gnu*]
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&& ![istarget *-*-elf*]
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&& ![istarget *-*-openbsd*]
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&& ![istarget arm-*-eabi*]
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&& ![istarget powerpc-*-eabi*]} {
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return 0
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}
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# This test can only be run on x86 targets.
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if {![istarget i?86-*]} {
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return 0
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}
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set testfile "pieces"
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set srcfile ${testfile}.S
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set csrcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}.x
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if {[prepare_for_testing ${testfile}.exp ${testfile}.x $srcfile]} {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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# Function f1 tests a particular gdb bug involving DW_OP_piece.
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proc pieces_test_f1 {} {
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global csrcfile
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set line [gdb_get_line_number "f1 breakpoint" $csrcfile]
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gdb_test "break pieces.c:$line" "Breakpoint 2.*" \
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"set f1 breakpoint for pieces"
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gdb_continue_to_breakpoint "continue to f1 breakpoint for pieces"
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gdb_test "print a" " = {i = 4, j = 14}" "print a in pieces:f1"
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gdb_test "print a.j" " = 14" "print a.j in pieces:f1"
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}
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# Function f2 tests for a bug when indexing into an array created
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# using DW_OP_piece.
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proc pieces_test_f2 {} {
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global csrcfile
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set line [gdb_get_line_number "f2 breakpoint" $csrcfile]
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gdb_test "break pieces.c:$line" "Breakpoint 3.*" \
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"set f2 breakpoint for pieces"
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gdb_continue_to_breakpoint "continue to f2 breakpoint for pieces"
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gdb_test "print a" " = .4, 14." "print a in pieces:f2"
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gdb_test "print a\[0\]" " = 4" "print a\[0\] in pieces:f2"
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gdb_test "print a\[1\]" " = 14" "print a\[1\] in pieces:f2"
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}
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# Function f3 tests DW_OP_bit_piece.
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proc pieces_test_f3 {} {
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global csrcfile
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set line [gdb_get_line_number "f3 breakpoint" $csrcfile]
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gdb_test "break pieces.c:$line" "Breakpoint 4.*" \
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"set f3 breakpoint for pieces"
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gdb_continue_to_breakpoint "continue to f3 breakpoint for pieces"
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gdb_test "print a.i" " = 4" "print a.i in pieces:f3"
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gdb_test "print a.j" " = 14" "print a.j in pieces:f3"
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# Right now gdb says "value optimized out" here, but that is wrong.
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setup_kfail "no bug yet" *-*-*
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gdb_test "print a.i = 7" " = 7" "set a.i in pieces:f3"
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gdb_test "print a.i" " = 7" "print new a.i in pieces:f3"
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}
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# Function f6 tests for an empty DW_OP_piece.
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proc pieces_test_f6 {} {
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global csrcfile
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set line [gdb_get_line_number "f6 breakpoint" $csrcfile]
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gdb_test "break pieces.c:$line" "Breakpoint 5.*" \
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"set f6 breakpoint for pieces"
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gdb_continue_to_breakpoint "continue to f6 breakpoint for pieces"
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gdb_test "print a" \
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"warning: bits .* in computed object were.* = {i = 7, j = 8, q = 0}" \
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"print a with optimized out piece"
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# Note: no warning for this case.
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gdb_test_multiple "print a.i" \
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"print a.i with optimized out piece" {
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-re "warning: some bits in computed object" {
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fail "print a.i with optimized out piece"
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}
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-re " = 7" {
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pass "print a.i with optimized out piece"
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}
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}
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}
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pieces_test_f1
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pieces_test_f2
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pieces_test_f3
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pieces_test_f6
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