diff options
| -rw-r--r-- | gdb/ChangeLog | 8 | ||||
| -rw-r--r-- | gdb/breakpoint.c | 117 | ||||
| -rw-r--r-- | gdb/doc/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 12 | ||||
| -rw-r--r-- | gdb/testsuite/ChangeLog | 15 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/watchpoint.c | 5 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/watchpoint.exp | 30 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.dwarf2/watch-notconst.c | 39 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.dwarf2/watch-notconst.exp | 44 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.dwarf2/watch-notconst2.S | 256 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.dwarf2/watch-notconst2.c | 35 |
11 files changed, 564 insertions, 2 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 73069b1..5079f8a 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +2010-06-16 Sergio Durigan Junior <sergiodj@redhat.com> + Jan Kratochvil <jan.kratochvil@redhat.com> + + * breakpoint.c: Include parser-defs.h. + (watchpoint_exp_is_const): New function. + (watch_command_1): Call watchpoint_exp_is_const to check + if the expression is constant. + 2010-06-15 Andreas Schwab <schwab@linux-m68k.org> * configure.ac: Check for RDYNAMIC also for cross builds. diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index f851cbe..a0fb887 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -61,6 +61,7 @@ #include "valprint.h" #include "jit.h" #include "xml-syscall.h" +#include "parser-defs.h" /* readline include files */ #include "readline/readline.h" @@ -7767,6 +7768,111 @@ stopat_command (char *arg, int from_tty) break_command_1 (arg, 0, from_tty); } +/* Return non-zero if EXP is verified as constant. Returned zero means EXP is + variable. Also the constant detection may fail for some constant + expressions and in such case still falsely return zero. */ +static int +watchpoint_exp_is_const (const struct expression *exp) +{ + int i = exp->nelts; + + while (i > 0) + { + int oplenp, argsp; + + /* We are only interested in the descriptor of each element. */ + operator_length (exp, i, &oplenp, &argsp); + i -= oplenp; + + switch (exp->elts[i].opcode) + { + case BINOP_ADD: + case BINOP_SUB: + case BINOP_MUL: + case BINOP_DIV: + case BINOP_REM: + case BINOP_MOD: + case BINOP_LSH: + case BINOP_RSH: + case BINOP_LOGICAL_AND: + case BINOP_LOGICAL_OR: + case BINOP_BITWISE_AND: + case BINOP_BITWISE_IOR: + case BINOP_BITWISE_XOR: + case BINOP_EQUAL: + case BINOP_NOTEQUAL: + case BINOP_LESS: + case BINOP_GTR: + case BINOP_LEQ: + case BINOP_GEQ: + case BINOP_REPEAT: + case BINOP_COMMA: + case BINOP_EXP: + case BINOP_MIN: + case BINOP_MAX: + case BINOP_INTDIV: + case BINOP_CONCAT: + case BINOP_IN: + case BINOP_RANGE: + case TERNOP_COND: + case TERNOP_SLICE: + case TERNOP_SLICE_COUNT: + + case OP_LONG: + case OP_DOUBLE: + case OP_DECFLOAT: + case OP_LAST: + case OP_COMPLEX: + case OP_STRING: + case OP_BITSTRING: + case OP_ARRAY: + case OP_TYPE: + case OP_NAME: + case OP_OBJC_NSSTRING: + + case UNOP_NEG: + case UNOP_LOGICAL_NOT: + case UNOP_COMPLEMENT: + case UNOP_ADDR: + case UNOP_HIGH: + /* Unary, binary and ternary operators: We have to check their + operands. If they are constant, then so is the result of + that operation. For instance, if A and B are determined to be + constants, then so is "A + B". + + UNOP_IND is one exception to the rule above, because the value + of *ADDR is not necessarily a constant, even when ADDR is. */ + break; + + case OP_VAR_VALUE: + /* Check whether the associated symbol is a constant. + We use SYMBOL_CLASS rather than TYPE_CONST because it's + possible that a buggy compiler could mark a variable as constant + even when it is not, and TYPE_CONST would return true in this + case, while SYMBOL_CLASS wouldn't. + We also have to check for function symbols because they are + always constant. */ + { + struct symbol *s = exp->elts[i + 2].symbol; + + if (SYMBOL_CLASS (s) != LOC_BLOCK + && SYMBOL_CLASS (s) != LOC_CONST + && SYMBOL_CLASS (s) != LOC_CONST_BYTES) + return 0; + break; + } + + /* The default action is to return 0 because we are using + the optimistic approach here: If we don't know something, + then it is not a constant. */ + default: + return 0; + } + } + + return 1; +} + /* accessflag: hw_write: watch write, hw_read: watch read, hw_access: watch access (read or write) */ @@ -7861,6 +7967,17 @@ watch_command_1 (char *arg, int accessflag, int from_tty) while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) --exp_end; + /* Checking if the expression is not constant. */ + if (watchpoint_exp_is_const (exp)) + { + int len; + + len = exp_end - exp_start; + while (len > 0 && isspace (exp_start[len - 1])) + len--; + error (_("Cannot watch constant value `%.*s'."), len, exp_start); + } + exp_valid_block = innermost_block; mark = value_mark (); fetch_watchpoint_value (exp, &val, NULL, NULL); diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 0525c5f..132727b 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,8 @@ +2010-06-16 Jan Kratochvil <jan.kratochvil@redhat.com> + + * gdb.texinfo: Include information about the correct use + of addresses in the `watch' command. + 2010-06-11 Stan Shebs <stan@codesourcery.com> * gdb.texinfo (Observer Mode): New section. diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index 6ac7d16..1daa211 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -3725,6 +3725,18 @@ This command prints a list of watchpoints, using the same format as @code{info break} (@pxref{Set Breaks}). @end table +If you watch for a change in a numerically entered address you need to +dereference it, as the address itself is just a constant number which will +never change. @value{GDBN} refuses to create a watchpoint that watches +a never-changing value: + +@smallexample +(@value{GDBP}) watch 0x600850 +Cannot watch constant value 0x600850. +(@value{GDBP}) watch *(int *) 0x600850 +Watchpoint 1: *(int *) 6293584 +@end smallexample + @value{GDBN} sets a @dfn{hardware watchpoint} if possible. Hardware watchpoints execute very quickly, and the debugger reports a change in value at the exact instruction where the change occurs. If @value{GDBN} diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 4a24793..b204e1f 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,18 @@ +2010-06-16 Jan Kratochvil <jan.kratochvil@redhat.com> + Sergio Durigan Junior <sergiodj@redhat.com> + + * gdb.base/watch-notconst.c: New file. + * gdb.base/watch-notconst.S: New file. + * gdb.base/watch-notconst2.c: New file. + * gdb.base/watch-notconst2.S: New file. + * gdb.base/watch-notconst.exp: New file. + * gdb.base/watchpoint.c (global_ptr_ptr): New variable. + (func4): Add operations on `global_ptr_ptr'. + * gdb.base/watchpoint.exp (test_constant_watchpoint): New + routine to test watchpoints created with a constant expression. + (test_inaccessible_watchpoint): Include tests for watchpoints + created with a constant expression. + 2010-06-14 Kevin Buettner <kevinb@redhat.com> * gdb.disasm/t01_mov.exp, gdb.disasm/t02_mova.exp, diff --git a/gdb/testsuite/gdb.base/watchpoint.c b/gdb/testsuite/gdb.base/watchpoint.c index 9275d88..8c212c1 100644 --- a/gdb/testsuite/gdb.base/watchpoint.c +++ b/gdb/testsuite/gdb.base/watchpoint.c @@ -40,6 +40,7 @@ struct foo struct1, struct2, *ptr1, *ptr2; int doread = 0; char *global_ptr; +char **global_ptr_ptr; void marker1 () { @@ -119,6 +120,10 @@ func4 () buf[0] = 3; global_ptr = buf; buf[0] = 7; + buf[1] = 5; + global_ptr_ptr = &global_ptr; + buf[0] = 9; + global_ptr++; } int main () diff --git a/gdb/testsuite/gdb.base/watchpoint.exp b/gdb/testsuite/gdb.base/watchpoint.exp index 56d82e4..6029b5b 100644 --- a/gdb/testsuite/gdb.base/watchpoint.exp +++ b/gdb/testsuite/gdb.base/watchpoint.exp @@ -617,7 +617,17 @@ proc test_watchpoint_and_breakpoint {} { } } } - + +proc test_constant_watchpoint {} { + gdb_test "watch 5" "Cannot watch constant value `5'." "number is constant" + gdb_test "watch marker1" "Cannot watch constant value `marker1'." \ + "marker1 is constant" + gdb_test "watch count + 6" ".*atchpoint \[0-9\]+: count \\+ 6" + gdb_test_no_output "delete \$bpnum" "delete watchpoint `count + 6'" + gdb_test "watch 7 + count" ".*atchpoint \[0-9\]+: 7 \\+ count" + gdb_test_no_output "delete \$bpnum" "delete watchpoint `7 + count'" +} + proc test_inaccessible_watchpoint {} { global gdb_prompt @@ -638,7 +648,8 @@ proc test_inaccessible_watchpoint {} { } gdb_test "watch *global_ptr" ".*atchpoint \[0-9\]+: \\*global_ptr" - gdb_test "next" ".*global_ptr = buf.*" + gdb_test "set \$global_ptr_breakpoint_number = \$bpnum" "" + gdb_test "next" ".*global_ptr = buf.*" "global_ptr next" gdb_test_multiple "next" "next over ptr init" { -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = .*\r\nNew value = 3 .*\r\n.*$gdb_prompt $" { # We can not test for <unknown> here because NULL may be readable. @@ -651,6 +662,14 @@ proc test_inaccessible_watchpoint {} { pass "next over buffer set" } } + gdb_test "delete \$global_ptr_breakpoint_number" "" + gdb_test "watch **global_ptr_ptr" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr" + gdb_test "set \$global_ptr_ptr_breakpoint_number = \$bpnum" "" + gdb_test "next" ".*global_ptr_ptr = &global_ptr.*" "gloabl_ptr_ptr next" + gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = .*\r\nNew value = 7 .*" "next over global_ptr_ptr init" + gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = 7 .*\r\nNew value = 9 .*" "next over global_ptr_ptr buffer set" + gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = 9 .*\r\nNew value = 5 .*" "next over global_ptr_ptr pointer advance" + gdb_test_no_output "delete \$global_ptr_ptr_breakpoint_number" } } @@ -827,6 +846,13 @@ if [initialize] then { test_watchpoint_and_breakpoint test_watchpoint_in_big_blob + + # See above. + if [istarget "mips-idt-*"] then { + clean_restart + } + + test_constant_watchpoint } # Restore old timeout diff --git a/gdb/testsuite/gdb.dwarf2/watch-notconst.c b/gdb/testsuite/gdb.dwarf2/watch-notconst.c new file mode 100644 index 0000000..b500fc4 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/watch-notconst.c @@ -0,0 +1,39 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2010 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 <http://www.gnu.org/licenses/>. */ + +/* This program will be compiled with watch-notconst2.S in order to generate a + single binary. + + The purpose of this test is to see if GDB can still watch the + variable `x' (define in watch-notconst2.c:f) even when we compile + the program using -O2 optimization. */ + +int +g (int j) +{ + int l = j + 2; + return l; +} + +extern int f (int i); + +int +main (int argc, char **argv) +{ + f (1); + return 0; +} diff --git a/gdb/testsuite/gdb.dwarf2/watch-notconst.exp b/gdb/testsuite/gdb.dwarf2/watch-notconst.exp new file mode 100644 index 0000000..e0b3d33 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/watch-notconst.exp @@ -0,0 +1,44 @@ +# Copyright 2010 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 <http://www.gnu.org/licenses/>. + +set test "watch-notconst" + +# 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 +} + +# This test can only be run on x86 targets. +if { ![istarget i?86-*] } { + return 0 +} + +if { [prepare_for_testing "${test}.exp" "${test}" \ + {watch-notconst.c watch-notconst2.S} {nodebug}] } { + return -1 +} + +if { ![runto f] } { + perror "Could not run to breakpoint `f'." + continue +} + +gdb_test "watch x" ".*\[Ww\]atchpoint 2: x" "watch x" diff --git a/gdb/testsuite/gdb.dwarf2/watch-notconst2.S b/gdb/testsuite/gdb.dwarf2/watch-notconst2.S new file mode 100644 index 0000000..137b701 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/watch-notconst2.S @@ -0,0 +1,256 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2010 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 <http://www.gnu.org/licenses/>. */ + +/* This source file was generated from watch-notconst2.c using the following + command line: + + gcc -m32 -dA -S -g -O2 watch-notconst2.c -o watch-notconst2.S + +*/ + + + .file "watch-notconst2.c" + .section .debug_abbrev,"",@progbits +.Ldebug_abbrev0: + .section .debug_info,"",@progbits +.Ldebug_info0: + .section .debug_line,"",@progbits +.Ldebug_line0: + .text +.Ltext0: + .cfi_sections .debug_frame + .p2align 4,,15 +.globl f + .type f, @function +f: +.LFB0: + .file 1 "watch-notconst2.c" + # watch-notconst2.c:30 + .loc 1 30 0 + .cfi_startproc +.LVL0: + # basic block 2 + pushl %ebp + .cfi_def_cfa_offset 8 + movl %esp, %ebp + .cfi_offset 5, -8 + .cfi_def_cfa_register 5 + pushl %ebx + subl $20, %esp + # watch-notconst2.c:30 + .loc 1 30 0 + movl 8(%ebp), %ebx + .cfi_offset 3, -12 + # watch-notconst2.c:32 + .loc 1 32 0 + movl $2, (%esp) + call g +.LVL1: + # watch-notconst2.c:34 + .loc 1 34 0 + movl %ebx, 8(%ebp) + # watch-notconst2.c:35 + .loc 1 35 0 + addl $20, %esp + popl %ebx + .cfi_restore 3 + popl %ebp + .cfi_restore 5 + .cfi_def_cfa 4, 4 +.LVL2: + # watch-notconst2.c:34 + .loc 1 34 0 + jmp g + .cfi_endproc +.LFE0: + .size f, .-f +.Letext0: + .section .debug_loc,"",@progbits +.Ldebug_loc0: +.LLST0: + .long .LVL0-.Ltext0 # Location list begin address (*.LLST0) + .long .LVL1-.Ltext0 # Location list end address (*.LLST0) + .value 0x2 # Location expression size + .byte 0x35 # DW_OP_lit5 + .byte 0x9f # DW_OP_stack_value + .long .LVL1-.Ltext0 # Location list begin address (*.LLST0) + .long .LVL2-.Ltext0 # Location list end address (*.LLST0) + .value 0x1 # Location expression size + .byte 0x53 # DW_OP_reg3 + .long 0x0 # Location list terminator begin (*.LLST0) + .long 0x0 # Location list terminator end (*.LLST0) + .section .debug_info + .long 0x5c # Length of Compilation Unit Info + .value 0x3 # DWARF version number + .long .Ldebug_abbrev0 # Offset Into Abbrev. Section + .byte 0x4 # Pointer Size (in bytes) + .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit) + .long .LASF0 # DW_AT_producer: "GNU C 4.4.3 20100127 (Red Hat 4.4.3-4)" + .byte 0x1 # DW_AT_language + .long .LASF1 # DW_AT_name: "watch-notconst2.c" + .long .LASF2 # DW_AT_comp_dir: "" + .long .Ltext0 # DW_AT_low_pc + .long .Letext0 # DW_AT_high_pc + .long .Ldebug_line0 # DW_AT_stmt_list + .uleb128 0x2 # (DIE (0x25) DW_TAG_subprogram) + .byte 0x1 # DW_AT_external + .ascii "f\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (watch-notconst2.c) + .byte 0x1d # DW_AT_decl_line + .byte 0x1 # DW_AT_prototyped + .long 0x58 # DW_AT_type + .long .LFB0 # DW_AT_low_pc + .long .LFE0 # DW_AT_high_pc + .byte 0x1 # DW_AT_frame_base + .byte 0x9c # DW_OP_call_frame_cfa + .long 0x58 # DW_AT_sibling + .uleb128 0x3 # (DIE (0x3e) DW_TAG_formal_parameter) + .ascii "i\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (watch-notconst2.c) + .byte 0x1d # DW_AT_decl_line + .long 0x58 # DW_AT_type + .byte 0x2 # DW_AT_location + .byte 0x91 # DW_OP_fbreg + .sleb128 0 + .uleb128 0x4 # (DIE (0x4a) DW_TAG_variable) + .ascii "x\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (watch-notconst2.c) + .byte 0x1f # DW_AT_decl_line + .long 0x58 # DW_AT_type + .long .LLST0 # DW_AT_location + .byte 0x0 # end of children of DIE 0x25 + .uleb128 0x5 # (DIE (0x58) DW_TAG_base_type) + .byte 0x4 # DW_AT_byte_size + .byte 0x5 # DW_AT_encoding + .ascii "int\0" # DW_AT_name + .byte 0x0 # end of children of DIE 0xb + .section .debug_abbrev + .uleb128 0x1 # (abbrev code) + .uleb128 0x11 # (TAG: DW_TAG_compile_unit) + .byte 0x1 # DW_children_yes + .uleb128 0x25 # (DW_AT_producer) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x13 # (DW_AT_language) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x1b # (DW_AT_comp_dir) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x10 # (DW_AT_stmt_list) + .uleb128 0x6 # (DW_FORM_data4) + .byte 0x0 + .byte 0x0 + .uleb128 0x2 # (abbrev code) + .uleb128 0x2e # (TAG: DW_TAG_subprogram) + .byte 0x1 # DW_children_yes + .uleb128 0x3f # (DW_AT_external) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x27 # (DW_AT_prototyped) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x40 # (DW_AT_frame_base) + .uleb128 0xa # (DW_FORM_block1) + .uleb128 0x1 # (DW_AT_sibling) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0x0 + .byte 0x0 + .uleb128 0x3 # (abbrev code) + .uleb128 0x5 # (TAG: DW_TAG_formal_parameter) + .byte 0x0 # DW_children_no + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .uleb128 0x2 # (DW_AT_location) + .uleb128 0xa # (DW_FORM_block1) + .byte 0x0 + .byte 0x0 + .uleb128 0x4 # (abbrev code) + .uleb128 0x34 # (TAG: DW_TAG_variable) + .byte 0x0 # DW_children_no + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .uleb128 0x2 # (DW_AT_location) + .uleb128 0x6 # (DW_FORM_data4) + .byte 0x0 + .byte 0x0 + .uleb128 0x5 # (abbrev code) + .uleb128 0x24 # (TAG: DW_TAG_base_type) + .byte 0x0 # DW_children_no + .uleb128 0xb # (DW_AT_byte_size) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3e # (DW_AT_encoding) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .byte 0x0 + .byte 0x0 + .byte 0x0 + .section .debug_pubnames,"",@progbits + .long 0x14 # Length of Public Names Info + .value 0x2 # DWARF Version + .long .Ldebug_info0 # Offset of Compilation Unit Info + .long 0x60 # Compilation Unit Length + .long 0x25 # DIE offset + .ascii "f\0" # external name + .long 0x0 + .section .debug_aranges,"",@progbits + .long 0x1c # Length of Address Ranges Info + .value 0x2 # DWARF Version + .long .Ldebug_info0 # Offset of Compilation Unit Info + .byte 0x4 # Size of Address + .byte 0x0 # Size of Segment Descriptor + .value 0x0 # Pad to 8 byte boundary + .value 0x0 + .long .Ltext0 # Address + .long .Letext0-.Ltext0 # Length + .long 0x0 + .long 0x0 + .section .debug_str,"MS",@progbits,1 +.LASF1: + .string "watch-notconst2.c" +.LASF2: + .string "" +.LASF0: + .string "GNU C 4.4.3 20100127 (Red Hat 4.4.3-4)" + .ident "GCC: (GNU) 4.4.3 20100127 (Red Hat 4.4.3-4)" + .section .note.GNU-stack,"",@progbits diff --git a/gdb/testsuite/gdb.dwarf2/watch-notconst2.c b/gdb/testsuite/gdb.dwarf2/watch-notconst2.c new file mode 100644 index 0000000..4a70f8d --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/watch-notconst2.c @@ -0,0 +1,35 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2010 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 <http://www.gnu.org/licenses/>. */ + +/* The original program corresponding to watch-notconst2.S. + + This program is not compiled; the .S version is used instead. + + The purpose of this test is to see if GDB can still watch the + variable `x' even when we compile the program using -O2 + optimization. */ + +extern int g (int j); + +int +f (int i) +{ + int x = 5; + g (2); + x = i; + return g (x); +} |