From 5c631832c12b23cae13bde49a3d393e8bf94f599 Mon Sep 17 00:00:00 2001 From: Jan Kratochvil Date: Mon, 7 Jun 2010 19:55:33 +0000 Subject: gdb/ Fix PR 10640. * dwarf2-frame.c (no_dwarf_call): New function. (execute_stack_op): Set CTX->DWARF_CALL. * dwarf2expr.c (execute_stack_op) : New. * dwarf2expr.h (struct dwarf_expr_context) : New. (struct dwarf_expr_context) : Remove the #if0-ed field. * dwarf2loc.c (per_cu_dwarf_call, dwarf_expr_dwarf_call): New functions. (dwarf2_evaluate_loc_desc): Initialize CTX->DWARF_CALL. (needs_frame_dwarf_call): New function. (dwarf2_loc_desc_needs_frame): Initialize CTX->DWARF_CALL. * dwarf2read.c (follow_die_offset): Based on former follow_die_ref. Update the comment. Move variables die, offset and error call to ... (follow_die_ref): ... a new function. (dwarf2_fetch_die_location_block): New function. * dwarf2loc.h (dwarf2_fetch_die_location_block): New prototype. gdb/testsuite/ Test PR 10640. * gdb.dwarf2/dw2-op-call.exp, gdb.dwarf2/dw2-op-call.S: New. --- gdb/testsuite/gdb.dwarf2/dw2-op-call.S | 119 +++++++++++++++++++++++++++++++ gdb/testsuite/gdb.dwarf2/dw2-op-call.exp | 41 +++++++++++ 2 files changed, 160 insertions(+) create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-op-call.S create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-op-call.exp (limited to 'gdb/testsuite/gdb.dwarf2') diff --git a/gdb/testsuite/gdb.dwarf2/dw2-op-call.S b/gdb/testsuite/gdb.dwarf2/dw2-op-call.S new file mode 100644 index 0000000..068e224 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/dw2-op-call.S @@ -0,0 +1,119 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2009 Free Software Foundation, Inc. + + 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 . */ + +/* Test DW_OP_call2 and DW_OP_call4, PR gdb/10640. */ + + .section .data +array1: .2byte 1 +array2: .2byte 2 +array3: .2byte 3 + + .section .debug_info +.Lcu1_begin: + /* CU header */ + .4byte .Lcu1_end - .Lcu1_start /* Length of Compilation Unit */ +.Lcu1_start: + .2byte 2 /* DWARF Version */ + .4byte .Labbrev1_begin /* Offset into abbrev section */ + .byte 4 /* Pointer size */ + + /* CU die */ + .uleb128 1 /* Abbrev: DW_TAG_compile_unit */ + .ascii "file1.txt\0" /* DW_AT_name */ + .ascii "GNU C 3.3.3\0" /* DW_AT_producer */ + .byte 2 /* DW_LANG_C (C) */ + +.L2byte_type: + .uleb128 2 /* Abbrev: DW_TAG_base_type */ + .ascii "2byte\0" /* DW_AT_name */ + .byte 2 /* DW_AT_byte_size */ + .byte 7 /* DW_AT_encoding: DW_ATE_unsigned */ + +.Larray1: + .uleb128 3 /* Abbrev: DW_TAG_variable */ + .ascii "array1\0" /* DW_AT_name */ + .4byte .L2byte_type-.Lcu1_begin /* DW_AT_type */ + .byte 2f - 1f /* DW_AT_location */ +1: .byte 3 /* DW_OP_addr */ + .4byte array /* */ +2: + + .uleb128 3 /* Abbrev: DW_TAG_variable */ + .ascii "array2\0" /* DW_AT_name */ + .4byte .L2byte_type-.Lcu1_begin /* DW_AT_type */ + .byte 2f - 1f /* DW_AT_location */ +1: .byte 0x98 /* DW_OP_call2 */ + .2byte .Larray1-.Lcu1_begin /* */ + .byte 0x23 /* DW_OP_plus_uconst */ + .uleb128 array2-array1 /* */ +2: + + .uleb128 3 /* Abbrev: DW_TAG_variable */ + .ascii "array3\0" /* DW_AT_name */ + .4byte .L2byte_type-.Lcu1_begin /* DW_AT_type */ + .byte 2f - 1f /* DW_AT_location */ +1: .byte 0x99 /* DW_OP_call4 */ + .4byte .Larray1-.Lcu1_begin /* */ + .byte 0x23 /* DW_OP_plus_uconst */ + .uleb128 array3-array1 /* */ +2: + + .byte 0 /* End of children of CU */ + +.Lcu1_end: + +/* Abbrev table */ + .section .debug_abbrev +.Labbrev1_begin: + .uleb128 1 /* Abbrev code */ + .uleb128 0x11 /* DW_TAG_compile_unit */ + .byte 1 /* has_children */ + .uleb128 0x3 /* DW_AT_name */ + .uleb128 0x8 /* DW_FORM_string */ + .uleb128 0x25 /* DW_AT_producer */ + .uleb128 0x8 /* DW_FORM_string */ + .uleb128 0x13 /* DW_AT_language */ + .uleb128 0xb /* DW_FORM_data1 */ + .byte 0x0 /* Terminator */ + .byte 0x0 /* Terminator */ + + .uleb128 2 /* Abbrev code */ + .uleb128 0x24 /* DW_TAG_base_type */ + .byte 0 /* has_children */ + .uleb128 0x3 /* DW_AT_name */ + .uleb128 0x8 /* DW_FORM_string */ + .uleb128 0xb /* DW_AT_byte_size */ + .uleb128 0xb /* DW_FORM_data1 */ + .uleb128 0x3e /* DW_AT_encoding */ + .uleb128 0xb /* DW_FORM_data1 */ + .byte 0x0 /* Terminator */ + .byte 0x0 /* Terminator */ + + .uleb128 3 /* Abbrev code */ + .uleb128 0x34 /* DW_TAG_variable */ + .byte 0 /* has_children */ + .uleb128 0x3 /* DW_AT_name */ + .uleb128 0x8 /* DW_FORM_string */ + .uleb128 0x49 /* DW_AT_type */ + .uleb128 0x13 /* DW_FORM_ref4 */ + .uleb128 0x2 /* DW_AT_location */ + .uleb128 0xa /* DW_FORM_block1 */ + .byte 0x0 /* Terminator */ + .byte 0x0 /* Terminator */ + + .byte 0x0 /* Terminator */ + .byte 0x0 /* Terminator */ diff --git a/gdb/testsuite/gdb.dwarf2/dw2-op-call.exp b/gdb/testsuite/gdb.dwarf2/dw2-op-call.exp new file mode 100644 index 0000000..5b5fefd --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/dw2-op-call.exp @@ -0,0 +1,41 @@ +# Copyright 2009 Free Software Foundation, Inc. + +# 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 . + +# Test DW_OP_call2 and DW_OP_call4, PR gdb/10640. + +# This test can only be run on targets which support DWARF-2 and use gas. +# For now pick a sampling of likely targets. +if {![istarget *-*-linux*] + && ![istarget *-*-gnu*] + && ![istarget *-*-elf*] + && ![istarget *-*-openbsd*] + && ![istarget arm-*-eabi*] + && ![istarget powerpc-*-eabi*]} { + return 0 +} + +set testfile "dw2-op-call" +set srcfile ${testfile}.S +set executable ${testfile}.x + +if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${objdir}/${subdir}/${executable}" object {nodebug}] != "" } { + return -1 +} + +clean_restart $executable + +gdb_test "p array1" " = 1" +gdb_test "p array2" " = 2" "array2 using DW_OP_call2" +gdb_test "p array3" " = 3" "array3 using DW_OP_call4" -- cgit v1.1